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Overview
Comment: | Also export all data as an XML ATOM file conforming to Google Calendar's ATOM feed. |
---|---|
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
532c47695f52db1766ee9b7746815401 |
User & Date: | MCO 2013-11-28 12:13:42.650 |
Context
2013-12-03
| ||
12:57 | Added SQL file with a proposal for a data structure to be used in a more comprehensive approach to project-timekeeping. check-in: 4d13bbac76 user: MCO tags: trunk | |
2013-11-28
| ||
12:13 | Also export all data as an XML ATOM file conforming to Google Calendar's ATOM feed. check-in: 532c47695f user: MCO tags: trunk | |
10:41 | DAT2ICS: also convert .dat file to a .sqlite database (and leave that on disk). check-in: e8a09c7bd9 user: MCO tags: trunk | |
Changes
Changes to DAT2ICS/src/ProjectIt_dat2ics.dpr.
1 2 3 4 5 6 7 8 9 | program ProjectIt_dat2ics; {$APPTYPE CONSOLE} {$R *.res} uses SysUtils, Classes, IniFiles, StrUtils, DateUtils, Types, MessageDigest_5 in 'C:\Program Files (x86)\Embarcadero\RAD Studio\9.0\source\soap\wsdlimporter\MessageDigest_5.pas', | | > < | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | program ProjectIt_dat2ics; {$APPTYPE CONSOLE} {$R *.res} uses SysUtils, Classes, IniFiles, StrUtils, DateUtils, Types, MessageDigest_5 in 'C:\Program Files (x86)\Embarcadero\RAD Studio\9.0\source\soap\wsdlimporter\MessageDigest_5.pas', SQLite3Database, SQLite3Abstract, NativeXml, NativeXmlXPath; { ------------------------------------------------------------------------------------------------ } function LoadData(const DataFile: TFilename; var DB: TSQLiteDatabase): Integer; var Data: TIniFile; InsertActivity: TCustomSQLiteQuery; Projects, Entries: TStringList; pi, ei: Integer; sProject, sKey, sActiveProject: string; dtDummy: TDateTime; ID: Int64; begin if not FileExists(DataFile) then raise EFileNotFoundException.CreateFmt('File "%s" not found.', [DataFile]); |
︙ | ︙ | |||
63 64 65 66 67 68 69 | InsertActivity := DB.PrepareSQL('INSERT INTO ProjectActivities(project, start, duration) ' + 'VALUES(:Project, :Start, :Duration)'); Projects := TStringList.Create; Entries := TStringList.Create; try Data.ReadSections(Projects); | < > < | 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | InsertActivity := DB.PrepareSQL('INSERT INTO ProjectActivities(project, start, duration) ' + 'VALUES(:Project, :Start, :Duration)'); Projects := TStringList.Create; Entries := TStringList.Create; try Data.ReadSections(Projects); Result := 0; sActiveProject := ''; DB.BeginTransaction; try for pi := 0 to Projects.Count - 1 do begin sProject := Projects[pi]; Entries.Clear; Data.ReadSection(sProject, Entries); for ei := 0 to Entries.Count - 1 do begin sKey := Entries[ei]; if TryStrToDateTime(sKey, dtDummy, DB.FormatSettings) then begin InsertActivity.Parameters.Named[':Project'].SetValue(sProject); InsertActivity.Parameters.Named[':Start'].SetValue(sKey); InsertActivity.Parameters.Named[':Duration'].SetValue(Data.ReadInteger(sProject, sKey, 0)); DB.Execute(InsertActivity); Inc(Result); end; end; if Data.ReadBool(sProject, 'Active', False) then sActiveProject := sProject; end; DB.Commit; except DB.Rollback; Result := 0; raise; end; finally |
︙ | ︙ | |||
201 202 203 204 205 206 207 208 209 210 211 212 213 214 | end else begin Write(SB.ToString); end; finally SB.Free; end; end {ExportToICS}; { ------------------------------------------------------------------------------------------------ } function ParseParams(var Named, Unnamed: TStringList): Integer; var i: Integer; Name, Value: string; begin | > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 | end else begin Write(SB.ToString); end; finally SB.Free; end; end {ExportToICS}; { ------------------------------------------------------------------------------------------------ } function ExportToGCalXML(const DB: TSQLiteDatabase; const GCalFilename: TFilename): Integer; var Rows: TCustomSQLiteCursor; iProject, iStart, iFinish, iCurrent: Integer; MD5: IMD5; sHash8: UTF8String; sHash, sProject: string; Doc: TNativeXml; xEntry, xTitle, xWhen: TXmlNode; begin Doc := TNativeXml.CreateName('feed'); try Doc.Root.AttributeByName['xmlns'] := 'http://www.w3.org/2005/Atom'; Doc.Root.AttributeByName['xmlns:gd'] := 'http://schemas.google.com/g/2005'; Rows := DB.GetCursor(' SELECT p.name' + ' , strftime("%Y-%m-%dT%H:%M:%S", a.start, "utc") || "Z" AS start' + ' , strftime("%Y-%m-%dT%H:%M:%S", a.start, "+" || a.duration || " seconds", "utc") || "Z" AS finish' + ' , a.current' + ' FROM Activities a' + ' INNER JOIN Projects p ON a.project_id = p.id' + ' WHERE a.duration >= (60 * 5)' + ' AND p.name != "Pauze"' + ' ORDER BY a.start DESC' + ' , a.duration DESC' + ' , p.id DESC' + ' , a.id DESC;'); try Result := 0; if not Rows.EOF then begin iProject := Rows.FieldIndex('name'); iStart := Rows.FieldIndex('start'); iFinish := Rows.FieldIndex('finish'); iCurrent := Rows.FieldIndex('current'); while not Rows.EOF do begin sHash8 := UTF8String(Rows.Fields[iProject].AsString + '|' + Rows.Fields[iStart].AsString); MD5 := GetMD5; MD5.Init; MD5.Update(TByteDynArray(sHash8), Length(sHash8)); sHash := LowerCase(MD5.AsString); sProject := Rows.Fields[iProject].AsString; xEntry := Doc.Root.NodeNew('entry'); xTitle := xEntry.NodeNew('title'); xTitle.AttributeByNameWide['type'] := 'text'; if Rows.Fields[iCurrent].AsInteger <> 0 then xTitle.ValueAsUnicodeString := sProject + '*' else xTitle.ValueAsUnicodeString := sProject; xWhen := xEntry.NodeNew('gd:when'); xWhen.AttributeByNameWide['startTime'] := Rows.Fields[iStart].AsString; xWhen.AttributeByNameWide['endTime'] := Rows.Fields[iFinish].AsString; Inc(Result); Rows.Next; end; end; finally Rows.Free; end; if Length(GCalFilename) > 0 then begin Doc.saveToFile(GCalFilename); end else begin WriteLn(Doc.Root.XML); end; finally Doc.Free; end; end {ExportToICS}; { ------------------------------------------------------------------------------------------------ } function ParseParams(var Named, Unnamed: TStringList): Integer; var i: Integer; Name, Value: string; begin |
︙ | ︙ | |||
248 249 250 251 252 253 254 255 | Count := LoadData(InputFile, DB); try Writeln(Count, ' items imported from "', InputFile, '".'); Count := ExportToICS(DB, OutputFile); WriteLn(Count, ' events exported to "', OutputFile, '".'); DB.BackupToFile(InputFile + '.sqlite'); | > > > | | 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 | Count := LoadData(InputFile, DB); try Writeln(Count, ' items imported from "', InputFile, '".'); Count := ExportToICS(DB, OutputFile); WriteLn(Count, ' events exported to "', OutputFile, '".'); Count := ExportToGCalXML(DB, ChangeFileExt(OutputFile, '.gcal.xml')); WriteLn(Count, ' events exported to "', ChangeFileExt(OutputFile, '.gcal.xml'), '".'); DB.BackupToFile(InputFile + '.sqlite'); WriteLn('SQLite database saved.'); finally DB.Free; end; except on E: Exception do begin Writeln(ErrOutput, E.ClassName, ': ', E.Message); Halt(2); end; end; end. |
Changes to DAT2ICS/src/ProjectIt_dat2ics.dproj.
︙ | ︙ | |||
37 38 39 40 41 42 43 | <PropertyGroup Condition="'$(Config)'=='Release' or '$(Cfg_2)'!=''"> <Cfg_2>true</Cfg_2> <CfgParent>Base</CfgParent> <Base>true</Base> </PropertyGroup> <PropertyGroup Condition="'$(Base)'!=''"> <VerInfo_Keys>CompanyName=;FileDescription=;FileVersion=1.0.0.0;InternalName=;LegalCopyright=;LegalTrademarks=;OriginalFilename=;ProductName=;ProductVersion=1.0.0.0;Comments=</VerInfo_Keys> | | | | 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | <PropertyGroup Condition="'$(Config)'=='Release' or '$(Cfg_2)'!=''"> <Cfg_2>true</Cfg_2> <CfgParent>Base</CfgParent> <Base>true</Base> </PropertyGroup> <PropertyGroup Condition="'$(Base)'!=''"> <VerInfo_Keys>CompanyName=;FileDescription=;FileVersion=1.0.0.0;InternalName=;LegalCopyright=;LegalTrademarks=;OriginalFilename=;ProductName=;ProductVersion=1.0.0.0;Comments=</VerInfo_Keys> <Manifest_File>$(BDS)\bin\default_app.manifest</Manifest_File> <VerInfo_Locale>1043</VerInfo_Locale> <DCC_Namespace>System;Xml;Data;Datasnap;Web;Soap;$(DCC_Namespace)</DCC_Namespace> <DCC_UnitSearchPath>.\;Lib\;Lib\SQLite\;Lib\NativeXML;$(DCC_UnitSearchPath)</DCC_UnitSearchPath> <DCC_UsePackage>bindcompfmx;fmx;rtl;dbrtl;IndySystem;DbxClientDriver;bindcomp;inetdb;DBXInterBaseDriver;xmlrtl;DbxCommonDriver;IndyProtocols;DBXMySQLDriver;dbxcds;soaprtl;bindengine;CustomIPTransport;dsnap;IndyCore;fmxase;inet;fmxobj;inetdbxpress;fmxdae;dbexpress;IPIndyImpl;$(DCC_UsePackage)</DCC_UsePackage> <DCC_DcuOutput>..\Out\DCU\$(Platform)\$(Config)</DCC_DcuOutput> <DCC_ExeOutput>..\Out\$(Platform)\$(Config)</DCC_ExeOutput> <DCC_E>false</DCC_E> <DCC_N>false</DCC_N> <DCC_S>false</DCC_S> <DCC_F>false</DCC_F> |
︙ | ︙ |
Added DAT2ICS/src/lib/NativeXml/NativeXml.inc.
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | { unit NativeXml.inc Nativexml a small-footprint implementation to read and write XML documents natively from Delpi code. NativeXml has very fast parsing speeds. Author: Nils Haeck M.Sc. Copyright (c) 2007 - 2010 Simdesign B.V. It is NOT allowed under ANY circumstances to publish, alter or copy this code without accepting the license conditions in accompanying LICENSE.txt first! This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. Please visit http://www.simdesign.nl/xml.html for more information. } // Delphi and BCB versions // Freepascal (MK) {$ifdef FPC} {$MODE DELPHI} {$define D7UP} {$endif FPC} //Delphi 7 {$ifdef VER150} {$define D7UP} {$endif} //Delphi 8 {$ifdef VER160} {$define D7UP} {$endif} // Delphi 2005 {$ifdef VER170} {$define D7UP} {$endif} // Delphi 2006 {$ifdef VER180} {$define D7UP} {$endif} // Delphi 2007 - NET {$ifdef VER190} {$define D7UP} {$endif} // Delphi 2009 {$ifdef VER200} {$define D7UP} {$define D12UP} {$endif} // Delphi 2010 {$ifdef VER210} {$define D7UP} {$define D12UP} {$endif} // Delphi XE {$ifdef VER220} {$define D7UP} {$define D12UP} {$define D15UP} {$endif} // Uncomment to save memory space for large documents if you don't need tags. // Tags are an additional integer field that can be used by the application. {$define USETAGS} // uncomment if you do not want to include the Graphics unit. { $define USEGRAPHICS} // uncomment if you do not want line number/position info from the source file {$define SOURCEPOS} |
Added DAT2ICS/src/lib/NativeXml/NativeXml.pas.
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6272 6273 6274 6275 6276 6277 6278 6279 6280 6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295 6296 6297 6298 6299 6300 6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321 6322 6323 6324 6325 6326 6327 6328 6329 6330 6331 6332 6333 6334 6335 6336 6337 6338 6339 6340 6341 6342 6343 6344 6345 6346 6347 6348 6349 6350 6351 6352 6353 6354 6355 6356 6357 6358 6359 6360 6361 6362 6363 6364 6365 6366 6367 6368 6369 6370 6371 6372 6373 6374 6375 | { unit NativeXml This is a small-footprint implementation to read and write XML documents natively from Delpi code. You can use this code to read XML documents from files, streams or strings. The load routine generates events that can be used to display load progress on the fly. Note: any external encoding (ANSI, UTF16, etc) is converted to an internal encoding that is ANSI or UTF8. When the loaded document is ANSI based, the encoding will be ANSI, in other cases (UTF8, UTF16) the encoding will be UTF8. Original Author: Nils Haeck M.Sc. (n.haeck@simdesign.nl) Original Date: 01 Apr 2003 Version: see below Copyright (c) 2003-2010 Simdesign BV Contributor(s): Stefan Glienke It is NOT allowed under ANY circumstances to publish or copy this code without accepting the license conditions in accompanying LICENSE.txt first! This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. Please visit http://www.simdesign.nl/xml.html for more information. } unit NativeXml; interface {$i nativexml.inc} uses Windows, {$IFDEF CLR} System.Text, {$ENDIF} {$IFDEF USEGRAPHICS} {$IFDEF LINUX} QGraphics, {$ELSE} Graphics, {$ENDIF} {$ENDIF} Classes, SysUtils; const // Current version of the NativeXml unit cNativeXmlVersion = '3.10'; // cross-platform pointer type type {$IFDEF CLR} TPointer = TObject; {$ELSE} TPointer = Pointer; {$ENDIF} {$IFDEF D12UP} // Delphi 2009 and up type UnicodeChar = Char; PUnicodeChar = PChar; {$ELSE} // Delphi 2007 and below type UnicodeString = WideString; UnicodeChar = WideChar; PUnicodeChar = PWideChar; RawByteString = AnsiString; {$ENDIF} type // Note on TNativeXml.Format: // - xfReadable (default) to be able to read the xml file with a standard editor. // - xfCompact to save the xml fully compliant and at smallest size TXmlFormatType = ( xfReadable, // Save in readable format with CR-LF and indents xfCompact // Save without any control chars except LF after declarations ); // TXmlElementType enumerates the different kinds of elements that can be found // in the XML document. TXmlElementType = ( xeNormal, // Normal element <name {attr}>[value][sub-elements]</name> xeComment, // Comment <!--{comment}--> xeCData, // literal data <![CDATA[{data}]]> xeDeclaration, // XML declaration <?xml{declaration}?> xeStylesheet, // Stylesheet <?xml-stylesheet{stylesheet}?> xeDoctype, // DOCTYPE DTD declaration <!DOCTYPE{spec}> xeElement, // <!ELEMENT > xeAttList, // <!ATTLIST > xeEntity, // <!ENTITY > xeNotation, // <!NOTATION > xeExclam, // Any <!data> xeQuestion, // Any <?data?> xeCharData, // character data in a node xeUnknown // Any <data> ); // Choose what kind of binary encoding will be used when calling // TXmlNode BufferRead and BufferWrite. TBinaryEncodingType = ( xbeBinHex, { With this encoding, each byte is stored as a hexadecimal number, e.g. 0 = 00 and 255 = FF. } xbeBase64 { With this encoding, each group of 3 bytes are stored as 4 characters, requiring 64 different AnsiCharacters.} ); // Definition of different methods of String encoding. TStringEncodingType = ( seAnsi, // General 8 bit encoding, encoding must be determined from encoding declaration seUCS4BE, // UCS-4 Big Endian seUCS4LE, // UCS-4 Little Endian seUCS4_2143, // UCS-4 unusual octet order (2143) seUCS4_3412, // UCS-4 unusual octet order (3412) se16BitBE, // General 16 bit Big Endian, encoding must be determined from encoding declaration se16BitLE, // General 16 bit Little Endian, encoding must be determined from encoding declaration seUTF8, // UTF-8 seUTF16BE, // UTF-16 Big Endian seUTF16LE, // UTF-16 Little Endian seEBCDIC // EBCDIC flavour ); TXmlCompareOption = ( xcNodeName, xcNodeType, xcNodeValue, xcAttribCount, xcAttribNames, xcAttribValues, xcChildCount, xcChildNames, xcChildValues, xcRecursive ); TXmlCompareOptions = set of TXmlCompareOption; const xcAll: TXmlCompareOptions = [xcNodeName, xcNodeType, xcNodeValue, xcAttribCount, xcAttribNames, xcAttribValues, xcChildCount, xcChildNames, xcChildValues, xcRecursive]; var // XML Defaults cDefaultEncodingString: UTF8String = 'UTF-8'; cDefaultExternalEncoding: TStringEncodingType = seUTF8; cDefaultVersionString: UTF8String = '1.0'; cDefaultXmlFormat: TXmlFormatType = xfCompact; cDefaultWriteOnDefault: boolean = True; cDefaultBinaryEncoding: TBinaryEncodingType = xbeBase64; cDefaultIndentString: UTF8String = ' '; cDefaultDropCommentsOnParse: boolean = False; cDefaultUseFullNodes: boolean = False; cDefaultUseLocalBias: boolean = False; cDefaultFloatAllowScientific: boolean = True; cDefaultFloatSignificantDigits: integer = 9; type TXmlNode = class; TNativeXml = class; TsdCodecStream = class; // An event that is based on the TXmlNode object Node. TXmlNodeEvent = procedure(Sender: TObject; Node: TXmlNode) of object; // An event that is used to indicate load or save progress. TXmlProgressEvent = procedure(Sender: TObject; Size: integer) of object; // This event is used in the TNativeXml.OnNodeCompare event, and should // return -1 if Node1 < Node2, 0 if Node1 = Node2 and 1 if Node1 > Node2. TXmlNodeCompareEvent = function(Sender: TObject; Node1, Node2: TXmlNode; Info: TPointer): integer of object; // Pass a function of this kind to TXmlNode.SortChildNodes. The function should // return -1 if Node1 < Node2, 0 if Node1 = Node2 and 1 if Node1 > Node2. TXMLNodeCompareFunction = function(Node1, Node2: TXmlNode; Info: TPointer): integer; // Very simple autonomous stringlist that holds the list of attributes in the node TsdUTF8StringList = class(TPersistent) private FItems: array of UTF8String; FCount: integer; function GetItems(Index: integer): UTF8String; procedure SetItems(Index: integer; const Value: UTF8String); function GetValues(const Name: UTF8String): UTF8String; function GetNames(Index: integer): UTF8String; procedure SetValues(const Name, Value: UTF8String); function GetText: UTF8String; public function Add(const S: UTF8String): integer; procedure Assign(Source: TPersistent); override; procedure Clear; procedure Delete(Index: Integer); function IndexOfName(const Name: UTF8String): integer; property Count: integer read FCount; property Items[Index: integer]: UTF8String read GetItems write SetItems; default; property Names[Index: integer]: UTF8String read GetNames; property Values[const Name: UTF8String]: UTF8String read GetValues write SetValues; property Text: UTF8String read GetText; end; // The TXmlNode represents an element in the XML file. Each TNativeXml holds // one Root element. Under ths root element, sub-elements can be nested (there // is no limit on how deep). Property ElementType defines what kind of element // this node is. TXmlNode = class(TPersistent) private FName: UTF8String; // The element name FValue: UTF8String; // The *escaped* value FAttributes: TsdUTF8StringList; // List with attributes FNodes: TList; // These are the child elements FParent: TXmlNode; // Pointer to parent element FDocument: TNativeXml; // Pointer to parent XmlDocument FElementType: TXmlElementType; // The type of element FTag: integer; // A value the developer can use function AbortParsing: boolean; function GetValueAsString: UTF8String; procedure SetAttributeName(Index: integer; const Value: UTF8String); procedure SetAttributeValue(Index: integer; const Value: UTF8String); procedure SetValueAsString(const AValue: UTF8String); function GetIndent: UTF8String; function GetLineFeed: UTF8String; function GetTreeDepth: integer; function GetAttributeCount: integer; function GetAttributePair(Index: integer): UTF8String; function GetAttributeName(Index: integer): UTF8String; function GetAttributeValue(Index: integer): UTF8String; function GetWriteOnDefault: boolean; function GetBinaryEncoding: TBinaryEncodingType; function GetCascadedName: UTF8String; function QualifyAsDirectNode: boolean; procedure SetName(const Value: UTF8String); function GetFullPath: UTF8String; procedure SetBinaryEncoding(const Value: TBinaryEncodingType); function GetBinaryString: RawByteString; procedure SetBinaryString(const Value: RawByteString); function UseFullNodes: boolean; function UseLocalBias: Boolean; function GetValueAsUnicodeString: UnicodeString; procedure SetValueAsUnicodeString(const Value: UnicodeString); function GetAttributeByName(const AName: UTF8String): UTF8String; procedure SetAttributeByName(const AName, Value: UTF8String); function GetValueAsInteger: integer; procedure SetValueAsInteger(const Value: integer); function GetValueAsFloat: double; procedure SetValueAsFloat(const Value: double); function GetValueAsDateTime: TDateTime; procedure SetValueAsDateTime(const Value: TDateTime); function GetValueAsBool: boolean; procedure SetValueAsBool(const Value: boolean); function GetValueAsInt64: int64; procedure SetValueAsInt64(const Value: int64); procedure CheckCreateAttributesList; function GetAttributeValueAsUnicodeString(Index: integer): UnicodeString; procedure SetAttributeValueAsUnicodeString(Index: integer; const Value: UnicodeString); function GetAttributeValueAsInteger(Index: integer): integer; procedure SetAttributeValueAsInteger(Index: integer; const Value: integer); function GetAttributeByNameWide(const AName: UTF8String): UnicodeString; procedure SetAttributeByNameWide(const AName: UTF8String; const Value: UnicodeString); function GetTotalNodeCount: integer; function FloatSignificantDigits: integer; function FloatAllowScientific: boolean; function GetAttributeValueDirect(Index: integer): UTF8String; procedure SetAttributeValueDirect(Index: integer; const Value: UTF8String); protected function CompareNodeName(const NodeName: UTF8String): integer; procedure DeleteEmptyAttributes; function GetNodes(Index: integer): TXmlNode; virtual; function GetNodeCount: integer; virtual; procedure ParseTag(const AValue: UTF8String; TagStart, TagClose: integer); procedure ReadFromStream(S: TStream); virtual; procedure ReadFromString(const AValue: UTF8String); virtual; procedure ResolveEntityReferences; function UnescapeString(const AValue: UTF8String): UTF8String; virtual; function WriteInnerTag: UTF8String; virtual; procedure WriteToStream(S: TStream); virtual; procedure ChangeDocument(ADocument: TNativeXml); public // Create a new TXmlNode object. ADocument must be the TNativeXml that is // going to hold this new node. constructor Create(ADocument: TNativeXml); virtual; // \Create a new TXmlNode with name AName. ADocument must be the TNativeXml // that is going to hold this new node. constructor CreateName(ADocument: TNativeXml; const AName: UTF8String); virtual; // \Create a new TXmlNode with name AName and UTF8String value AValue. ADocument // must be the TNativeXml that is going to hold this new node. constructor CreateNameValue(ADocument: TNativeXml; const AName, AValue: UTF8String); virtual; // \Create a new TXmlNode with XML element type AType. ADocument must be the // TNativeXml that is going to hold this new node. constructor CreateType(ADocument: TNativeXml; AType: TXmlElementType); virtual; // Use Assign to assign another TXmlNode to this node. This means that all // properties and subnodes from the Source TXmlNode are copied to the current // node. You can also Assign a TNativeXml document to the node, in that case // the RootNodeList property of the TNativeXml object will be copied. procedure Assign(Source: TPersistent); override; // Call Delete to delete this node completely from the parent node list. This // call only succeeds if the node has a parent. It has no effect when called for // the root node. procedure Delete; virtual; // \Delete all nodes that are empty (this means, which have no subnodes, no // attributes, and no value assigned). This procedure works recursively. procedure DeleteEmptyNodes; // Destroy a TXmlNode object. This will free the child node list automatically. // Never call this method directly. All TXmlNodes in the document will be // recursively freed when TNativeXml.Free is called. destructor Destroy; override; // Use this method to add an integer attribute to the node. procedure AttributeAdd(const AName: UTF8String; AValue: integer); overload; // Use this method to add a string attribute with value AValue to the node. procedure AttributeAdd(const AName, AValue: UTF8String); overload; // Use this method to delete the attribute at Index in the list. Index must be // equal or greater than 0, and smaller than AttributeCount. Using an index // outside of that range has no effect. procedure AttributeDelete(Index: integer); // Switch position of the attributes at Index1 and Index2. procedure AttributeExchange(Index1, Index2: integer); // Use this method to find the index of an attribute with name AName. function AttributeIndexByname(const AName: UTF8String): integer; // \Clear all attributes from the current node. procedure AttributesClear; virtual; // Use this method to read binary data from the node into Buffer with a length of Count. procedure BufferRead(var Buffer{$IFDEF CLR}: TBytes{$ENDIF}; Count: Integer); virtual; // Use this method to write binary data in Buffer with a length of Count to the // current node. The data will appear as text using either BinHex or Base64 // method) in the final XML document. // Notice that NativeXml does only support up to 2Gb bytes of data per file, // so do not use this option for huge files. The binary encoding method (converting // binary data into text) can be selected using property BinaryEncoding. // xbeBase64 is most efficient, but slightly slower. Always use identical methods // for reading and writing. procedure BufferWrite(const Buffer{$IFDEF CLR}: TBytes{$ENDIF}; Count: Integer); virtual; // Returns the length of the data in the buffer, once it would be decoded by // method xbeBinHex or xbeBase64. If BinaryEncoding is xbeSixBits, this function // cannot be used. The length of the unencoded data is determined from the // length of the encoded data. For xbeBinHex this is trivial (just half the // length), for xbeBase64 this is more difficult (must use the padding characters) function BufferLength: integer; virtual; // Clear all child nodes and attributes, and the name and value of the current // XML node. However, the node is not deleted. Call Delete instead for that. procedure Clear; virtual; // Find the first node which has name NodeName. Contrary to the NodeByName // function, this function will search the whole subnode tree, using the // DepthFirst method. It is possible to search for a full path too, e.g. // FoundNode := MyNode.FindNode('/Root/SubNode1/SubNode2/ThisNode'); function FindNode(const NodeName: UTF8String): TXmlNode; // Find all nodes which have name NodeName. Contrary to the NodesByName // function, this function will search the whole subnode tree. If you use // a TXmlNodeList for the AList parameter, you don't need to cast the list // items to TXmlNode. procedure FindNodes(const NodeName: UTF8String; const AList: TList); // Use FromAnsiString to convert a normal ANSI String to a UTF8String for the node // (name, value, attributes). In TNativeXml the ANSI Characters are encoded // into UTF8. function FromAnsiString(const s: AnsiString): UTF8String; // Use FromUnicodeString to convert UnicodeString to a UTF8String for the node (name, value, // attributes). function FromUnicodeString(const W: UnicodeString): UTF8String; // Use HasAttribute to determine if the node has an attribute with name AName. function HasAttribute(const AName: UTF8String): boolean; virtual; // This function returns the index of this node in the parent's node list. // If Parent is not assigned, this function returns -1. function IndexInParent: integer; // This function returns True if the node has no subnodes and no attributes, // and if the node Name and value are empty. function IsClear: boolean; virtual; // This function returns True if the node has no subnodes and no attributes, // and if the node value is empty. function IsEmpty: boolean; virtual; function IsEqualTo(ANode: TXmlNode; Options: TXmlCompareOptions; MismatchNodes: TList = nil): boolean; // Add the node ANode as a new subelement in the nodelist. The node will be // added in position NodeCount (which will be returned). function NodeAdd(ANode: TXmlNode): integer; virtual; // This function returns a pointer to the first subnode that has an attribute with // name AttribName and value AttribValue. If ShouldRecurse = True (default), the // function works recursively, using the depthfirst method. function NodeByAttributeValue(const NodeName, AttribName, AttribValue: UTF8String; ShouldRecurse: boolean = True): TXmlNode; // Return a pointer to the first subnode with this Elementype, or return nil // if no subnode with that type is found. function NodeByElementType(ElementType: TXmlElementType): TXmlNode; // Return a pointer to the first subnode in the nodelist that has name AName. // If no subnodes with AName are found, the function returns nil. function NodeByName(const AName: UTF8String): TXmlNode; virtual; // \Delete the subnode at Index. The node will also be freed, so do not free the // node in the application. procedure NodeDelete(Index: integer); virtual; // Switch position of the nodes at Index1 and Index2. procedure NodeExchange(Index1, Index2: integer); // Extract the node ANode from the subnode list. The node will no longer appear // in the subnodes list, so the application is responsible for freeing ANode later. function NodeExtract(ANode: TXmlNode): TXmlNode; virtual; // This function returns a pointer to the first node with AName. If this node // is not found, then it creates a new node with AName and returns its pointer. function NodeFindOrCreate(const AName: UTF8String): TXmlNode; virtual; // Find the index of the first subnode with name AName. function NodeIndexByName(const AName: UTF8String): integer; virtual; // Find the index of the first subnode with name AName that appears after or on // the index AFrom. This function can be used in a loop to retrieve all nodes // with a certain name, without using a helper list. See also NodesByName. function NodeIndexByNameFrom(const AName: UTF8String; AFrom: integer): integer; virtual; // Call NodeIndexOf to get the index for ANode in the Nodes array. The first // node in the array has index 0, the second item has index 1, and so on. If // a node is not in the list, NodeIndexOf returns -1. function NodeIndexOf(ANode: TXmlNode): integer; // Insert the node ANode at location Index in the list. procedure NodeInsert(Index: integer; ANode: TXmlNode); virtual; // \Create a new node with AName, add it to the subnode list, and return a // pointer to it. function NodeNew(const AName: UTF8String): TXmlNode; virtual; // \Create a new node with AName, and insert it into the subnode list at location // Index, and return a pointer to it. function NodeNewAtIndex(Index: integer; const AName: UTF8String): TXmlNode; virtual; // Call NodeRemove to remove a specific node from the Nodes array when its index // is unknown. The value returned is the index of the item in the Nodes array // before it was removed. After an item is removed, all the items that follow // it are moved up in index position and the NodeCount is reduced by one. function NodeRemove(ANode: TxmlNode): integer; // \Clear (and free) the complete list of subnodes. procedure NodesClear; virtual; // Use this procedure to retrieve all nodes that have name AName. Pointers to // these nodes are added to the list in AList. AList must be initialized // before calling this procedure. If you use a TXmlNodeList you don't need // to cast the list items to TXmlNode. procedure NodesByName(const AName: UTF8String; const AList: TList); // Find the attribute with AName, and convert its value to a boolean. If the // attribute is not found, or cannot be converted, the default ADefault will // be returned. function ReadAttributeBool(const AName: UTF8String; ADefault: boolean = False): boolean; virtual; function ReadAttributeDateTime(const AName: UTF8String; ADefault: TDateTime = 0): TDateTime; virtual; // Find the attribute with AName, and convert its value to an integer. If the // attribute is not found, or cannot be converted, the default ADefault will // be returned. function ReadAttributeInteger(const AName: UTF8String; ADefault: integer = 0): integer; virtual; // Find the attribute with AName, and convert its value to an int64. If the // attribute is not found, or cannot be converted, the default ADefault will // be returned. function ReadAttributeInt64(const AName: UTF8String; ADefault: int64 = 0): int64; virtual; // Find the attribute with AName, and convert its value to a float. If the // attribute is not found, or cannot be converted, the default ADefault will // be returned. function ReadAttributeFloat(const AName: UTF8String; ADefault: double = 0): double; function ReadAttributeString(const AName: UTF8String; const ADefault: UTF8String = ''): UTF8String; virtual; // Read the subnode with AName and convert it to a boolean value. If the // subnode is not found, or cannot be converted, the boolean ADefault will // be returned. function ReadBool(const AName: UTF8String; ADefault: boolean = False): boolean; virtual; {$IFDEF USEGRAPHICS} // Read the properties Color and Style for the TBrush object ABrush from the // subnode with AName. procedure ReadBrush(const AName: UTF8String; ABrush: TBrush); virtual; // Read the subnode with AName and convert its value to TColor. If the // subnode is not found, or cannot be converted, ADefault will be returned. function ReadColor(const AName: UTF8String; ADefault: TColor = clBlack): TColor; virtual; // Read the properties \Name, Color, Size and Style for the TFont object AFont // from the subnode with AName. procedure ReadFont(const AName: UTF8String; AFont: TFont); virtual; // Read the properties Color, Mode, Style and Width for the TPen object APen // from the subnode with AName. procedure ReadPen(const AName: UTF8String; APen: TPen); virtual; {$ENDIF} // Read the subnode with AName and convert its value to TDateTime. If the // subnode is not found, or cannot be converted, ADefault will be returned. function ReadDateTime(const AName: UTF8String; ADefault: TDateTime = 0): TDateTime; virtual; // Read the subnode with AName and convert its value to a double. If the // subnode is not found, or cannot be converted, ADefault will be returned. function ReadFloat(const AName: UTF8String; ADefault: double = 0.0): double; virtual; // Read the subnode with AName and convert its value to an int64. If the // subnode is not found, or cannot be converted, ADefault will be returned. function ReadInt64(const AName: UTF8String; ADefault: int64 = 0): int64; virtual; // Read the subnode with AName and convert its value to an integer. If the // subnode is not found, or cannot be converted, ADefault will be returned. function ReadInteger(const AName: UTF8String; ADefault: integer = 0): integer; virtual; // Read the subnode with AName and return its UTF8String value. If the subnode is // not found, ADefault will be returned. function ReadString(const AName: UTF8String; const ADefault: UTF8String = ''): UTF8String; virtual; // Read the subnode with AName and return its UnicodeString value. If the subnode is // not found, ADefault will be returned. function ReadUnicodeString(const AName: UTF8String; const ADefault: UnicodeString = ''): UnicodeString; virtual; // Sort the child nodes of this node. Provide a custom node compare function in Compare, // or attach an event handler to the parent documents' OnNodeCompare in order to // provide custom sorting. If no compare function is given (nil) and OnNodeCompare // is not implemented, SortChildNodes will simply sort the nodes by name (ascending, // case insensitive). The Info pointer parameter can be used to pass any custom // information to the compare function. Default value for Info is nil. procedure SortChildNodes(Compare: TXMLNodeCompareFunction = nil; Info: TPointer = nil); // Use ToUnicodeString to convert any UTF8 String from the node (name, value, attributes) // to a UnicodeString. function ToUnicodeString(const s: UTF8String): UnicodeString; // Convert the node's value to boolean and return the result. If this conversion // fails, or no value is found, then the function returns ADefault. function ValueAsBoolDef(ADefault: boolean): boolean; virtual; // Convert the node's value to a TDateTime and return the result. If this conversion // fails, or no value is found, then the function returns ADefault. function ValueAsDateTimeDef(ADefault: TDateTime): TDateTime; virtual; // Convert the node's value to a double and return the result. If this conversion // fails, or no value is found, then the function returns ADefault. function ValueAsFloatDef(ADefault: double): double; virtual; // Convert the node's value to int64 and return the result. If this conversion // fails, or no value is found, then the function returns ADefault. function ValueAsInt64Def(ADefault: int64): int64; virtual; // Convert the node's value to integer and return the result. If this conversion // fails, or no value is found, then the function returns ADefault. function ValueAsIntegerDef(ADefault: integer): integer; virtual; // If the attribute with name AName exists, then set its value to the boolean // AValue. If it does not exist, then create a new attribute AName with the // boolean value converted to either "True" or "False". If ADefault = AValue, and // WriteOnDefault = False, no attribute will be added. procedure WriteAttributeBool(const AName: UTF8String; AValue: boolean; ADefault: boolean = False); virtual; procedure WriteAttributeDateTime(const AName: UTF8string; AValue: TDateTime; ADefault: TDateTime = 0); virtual; // If the attribute with name AName exists, then set its value to the integer // AValue. If it does not exist, then create a new attribute AName with the // integer value converted to a quoted string. If ADefault = AValue, and // WriteOnDefault = False, no attribute will be added. procedure WriteAttributeInteger(const AName: UTF8String; AValue: integer; ADefault: integer = 0); virtual; procedure WriteAttributeInt64(const AName: UTF8String; const AValue: int64; ADefault: int64 = 0); virtual; procedure WriteAttributeFloat(const AName: UTF8String; AValue: double; ADefault: double = 0); virtual; // If the attribute with name AName exists, then set its value to the UTF8String // AValue. If it does not exist, then create a new attribute AName with the // value AValue. If ADefault = AValue, and WriteOnDefault = False, no attribute // will be added. procedure WriteAttributeString(const AName: UTF8String; const AValue: UTF8String; const ADefault: UTF8String = ''); virtual; // Add or replace the subnode with AName and set its value to represent the boolean // AValue. If AValue = ADefault, and WriteOnDefault = False, no subnode will be added. procedure WriteBool(const AName: UTF8String; AValue: boolean; ADefault: boolean = False); virtual; {$IFDEF USEGRAPHICS} // Write properties Color and Style of the TBrush object ABrush to the subnode // with AName. If AName does not exist, it will be created. procedure WriteBrush(const AName: UTF8String; ABrush: TBrush); virtual; // Add or replace the subnode with AName and set its value to represent the TColor // AValue. If AValue = ADefault, and WriteOnDefault = False, no subnode will be added. procedure WriteColor(const AName: UTF8String; AValue: TColor; ADefault: TColor = clBlack); virtual; // Write properties \Name, Color, Size and Style of the TFont object AFont to // the subnode with AName. If AName does not exist, it will be created. procedure WriteFont(const AName: UTF8String; AFont: TFont); virtual; // Write properties Color, Mode, Style and Width of the TPen object APen to // the subnode with AName. If AName does not exist, it will be created. procedure WritePen(const AName: UTF8String; APen: TPen); virtual; {$ENDIF} // Add or replace the subnode with AName and set its value to represent the TDateTime // AValue. If AValue = ADefault, and WriteOnDefault = False, no subnode will be added. // The XML format used is compliant with W3C's specification of date and time. procedure WriteDateTime(const AName: UTF8String; AValue: TDateTime; ADefault: TDateTime = 0); virtual; // Add or replace the subnode with AName and set its value to represent the double // AValue. If AValue = ADefault, and WriteOnDefault = False, no subnode will be added. procedure WriteFloat(const AName: UTF8String; AValue: double; ADefault: double = 0.0); virtual; // Add or replace the subnode with AName and set its value to represent the hexadecimal representation of // AValue. If AValue = ADefault, and WriteOnDefault = False, no subnode will be added. procedure WriteHex(const AName: UTF8String; AValue: integer; Digits: integer; ADefault: integer = 0); virtual; // Add or replace the subnode with AName and set its value to represent the int64 // AValue. If AValue = ADefault, and WriteOnDefault = False, no subnode will be added. procedure WriteInt64(const AName: UTF8String; AValue: int64; ADefault: int64 = 0); virtual; // Add or replace the subnode with AName and set its value to represent the integer // AValue. If AValue = ADefault, and WriteOnDefault = False, no subnode will be added. procedure WriteInteger(const AName: UTF8String; AValue: integer; ADefault: integer = 0); virtual; // Add or replace the subnode with AName and set its value to represent the UTF8String // AValue. If AValue = ADefault, and WriteOnDefault = False, no subnode will be added. procedure WriteString(const AName, AValue: UTF8String; const ADefault: UTF8String = ''); virtual; // Call WriteToString to save the XML node to a UTF8String. This method can be used to store // individual nodes instead of the complete XML document. function WriteToString: UTF8String; virtual; // Add or replace the subnode with AName and set its value to represent the UnicodeString // AValue. If AValue = ADefault, and WriteOnDefault = False, no subnode will be added. procedure WriteUnicodeString(const AName: UTF8String; const AValue: UnicodeString; const ADefault: UnicodeString = ''); virtual; // AttributeByName returns the attribute value for the attribute that has name AName. // Set AttributeByName to add an attribute to the attribute list, or replace an // existing one. property AttributeByName[const AName: UTF8String]: UTF8String read GetAttributeByName write SetAttributeByName; // AttributeByNameWide returns the attribute value for the attribute that has name AName // as UnicodeString. Set AttributeByNameWide to add an attribute to the attribute list, or replace an // existing one. property AttributeByNameWide[const AName: UTF8String]: UnicodeString read GetAttributeByNameWide write SetAttributeByNameWide; // Returns the number of attributes in the current node. property AttributeCount: integer read GetAttributeCount; // Read this property to get the name of the attribute at Index. Note that Index // is zero-based: Index goes from 0 to AttributeCount - 1 property AttributeName[Index: integer]: UTF8String read GetAttributeName write SetAttributeName; // Read this property to get the Attribute \Name and Value pair at index Index. // This is a UTF8String with \Name and Value separated by a TAB character (#9). property AttributePair[Index: integer]: UTF8String read GetAttributePair; // Read this property to get the UTF8String value of the attribute at index Index. // Write to it to set the UTF8String value. property AttributeValue[Index: integer]: UTF8String read GetAttributeValue write SetAttributeValue; // Read this property to get the UnicodeString value of the attribute at index Index. // Write to it to set the UnicodeString value. property AttributeValueAsUnicodeString[Index: integer]: UnicodeString read GetAttributeValueAsUnicodeString write SetAttributeValueAsUnicodeString; // Read this property to get the integer value of the attribute at index Index. // If the value cannot be converted, 0 will be returned. Write to it to set the integer value. property AttributeValueAsInteger[Index: integer]: integer read GetAttributeValueAsInteger write SetAttributeValueAsInteger; // Set or get the raw attribute value, thus circumventing the escape function. Make sure that // the value you set does not contain the & and quote AnsiCharacters, or the produced // XML will be invalid. property AttributeValueDirect[Index: integer]: UTF8String read GetAttributeValueDirect write SetAttributeValueDirect; // BinaryEncoding reflects the same value as the BinaryEncoding setting of the parent // Document. property BinaryEncoding: TBinaryEncodingType read GetBinaryEncoding write SetBinaryEncoding; // Use BinaryString to add/extract binary data in an easy way to/from the node. Internally the // data gets stored as Base64-encoded data. Do not use this method for normal textual // information, it is better to use ValueAsString in that case (adds less overhead). property BinaryString: RawByteString read GetBinaryString write SetBinaryString; // This property returns the name and index and all predecessors with underscores // to separate, in order to get a unique reference that can be used in filenames. property CascadedName: UTF8String read GetCascadedName; // Pointer to parent NativeXml document, or Nil if none. property Document: TNativeXml read FDocument write FDocument; // ElementType contains the type of element that this node holds. property ElementType: TXmlElementType read FElementType write FElementType; // Fullpath will return the complete path of the node from the root, e.g. // /Root/SubNode1/SubNode2/ThisNode property FullPath: UTF8String read GetFullPath; // Read Name to get the name of the element, and write Name to set the name. // This is the full name and may include a namespace. (Namespace:Name) property Name: UTF8String read FName write SetName; // Parent points to the parent node of the current XML node. property Parent: TXmlNode read FParent write FParent; // NodeCount is the number of child nodes that this node holds. In order to // loop through all child nodes, use a construct like this: // <CODE> // with MyNode do // for i := 0 to NodeCount - 1 do // with Nodes[i] do // ..processing here // </CODE> property NodeCount: integer read GetNodeCount; // Use Nodes to access the child nodes of the current XML node by index. Note // that the list is zero-based, so Index is valid from 0 to NodeCount - 1. property Nodes[Index: integer]: TXmlNode read GetNodes; default; // Tag is an integer value the developer can use in any way. Tag does not get // saved to the XML. Tag is often used to point to a GUI element (and is then // cast to a pointer). property Tag: integer read FTag write FTag; // TotalNodeCount represents the total number of child nodes, and child nodes // of child nodes etcetera of this particular node. Use the following to get // the total number of nodes in the XML document: // <CODE> // Total := MyDoc.RootNodes.TotalNodeCount; // </CODE> property TotalNodeCount: integer read GetTotalNodeCount; // Read TreeDepth to find out many nested levels there are for the current XML // node. Root has a TreeDepth of zero. property TreeDepth: integer read GetTreeDepth; // ValueAsBool returns the node's value as boolean, or raises an // exception if the value cannot be converted to boolean. Set ValueAsBool // to convert a boolean to a UTF8String in the node's value field. See also // function ValueAsBoolDef. property ValueAsBool: boolean read GetValueAsBool write SetValueAsBool; // ValueAsDateTime returns the node's value as TDateTime, or raises an // exception if the value cannot be converted to TDateTime. Set ValueAsDateTime // to convert a TDateTime to a UTF8String in the node's value field. See also // function ValueAsDateTimeDef. property ValueAsDateTime: TDateTime read GetValueAsDateTime write SetValueAsDateTime; // ValueAsIn64 returns the node's value as int64, or raises an // exception if the value cannot be converted to int64. Set ValueAsInt64 // to convert an int64 to a UTF8String in the node's value field. See also // function ValueAsInt64Def. property ValueAsInt64: int64 read GetValueAsInt64 write SetValueAsInt64; // ValueAsInteger returns the node's value as integer, or raises an // exception if the value cannot be converted to integer. Set ValueAsInteger // to convert an integer to a UTF8String in the node's value field. See also // function ValueAsIntegerDef. property ValueAsInteger: integer read GetValueAsInteger write SetValueAsInteger; // ValueAsFloat returns the node's value as float, or raises an // exception if the value cannot be converted to float. Set ValueAsFloat // to convert a float to a UTF8String in the node's value field. See also // function ValueAsFloatDef. property ValueAsFloat: double read GetValueAsFloat write SetValueAsFloat; // ValueAsString returns the unescaped version of ValueDirect. All neccesary // characters in ValueDirect must be escaped (e.g. "&" becomes "&") but // ValueAsString returns them in original format. Always use ValueAsString to // set the text value of a node, to make sure all neccesary charaters are // escaped. property ValueAsString: UTF8String read GetValueAsString write SetValueAsString; // ValueAsUnicodeString returns the unescaped version of ValueDirect as a UnicodeString. // Always use ValueAsUnicodeString to set the text value of a node, to make sure all // neccesary charaters are escaped. property ValueAsUnicodeString: UnicodeString read GetValueAsUnicodeString write SetValueAsUnicodeString; // ValueDirect is the exact text value as was parsed from the stream. If multiple // text elements are encountered, they are added to ValueDirect with a CR to // separate them. property ValueDirect: UTF8String read FValue write FValue; // WriteOnDefault reflects the same value as the WriteOnDefault setting of the parent // Document. property WriteOnDefault: boolean read GetWriteOnDefault; end; // TXmlNodeList is a utility TList descendant that can be used to work with selection // lists. An example: // <code> // procedure FindAllZips(ANode: TXmlNode); // var // i: integer; // AList: TXmlNodeList; // begin // AList := TXmlNodeList.Create; // try // // Get a list of all nodes named 'ZIP' // ANode.NodesByName('ZIP', AList); // for i := 0 to AList.Count - 1 do // // Write the value of the node to output. Since AList[i] will be // // of type TXmlNode, we can directly access the Value property. // WriteLn(AList[i].Value); // finally // AList.Free; // end; // end; // </code> TXmlNodeList = class(TList) private function GetItems(Index: Integer): TXmlNode; procedure SetItems(Index: Integer; const Value: TXmlNode); public // Return the first node in the list that has an attribute with AName, AValue function ByAttribute(const AName, AValue: UTF8String): TXmlNode; property Items[Index: Integer]: TXmlNode read GetItems write SetItems; default; end; // TNativeXml is the XML document holder. Create a TNativeXml and then use // methods LoadFromFile, LoadFromStream or ReadFromString to load an XML document // into memory. Or start from scratch and use Root.NodeNew to add nodes and // eventually SaveToFile and SaveToStream to save the results as an XML document. // Use property Xmlformat = xfReadable to ensure that indented (readable) output // is produced. TNativeXml = class(TPersistent) private FAbortParsing: boolean; // Signal to abort the parsing process FBinaryEncoding: TBinaryEncodingType; // xbeBinHex or xbeBase64 FCodecStream: TsdCodecStream; // Temporary stream used to read encoded files FDropCommentsOnParse: boolean; // If true, comments are dropped (deleted) when parsing FExternalEncoding: TStringEncodingType; FFloatAllowScientific: boolean; FFloatSignificantDigits: integer; FParserWarnings: boolean; // Show parser warnings for non-critical errors FRootNodes: TXmlNode; // Root nodes in the document (which contains one normal element that is the root) FIndentString: UTF8String; // The indent string used to indent content (default is two spaces) FUseFullNodes: boolean; // If true, nodes are never written in short notation. FUseLocalBias: Boolean; // If true, datetime values are written with timezone offset and converted to local time when read FWriteOnDefault: boolean; // Set this option to "False" to only write values <> default value (default = true) FXmlFormat: TXmlFormatType; // xfReadable, xfCompact FOnNodeCompare: TXmlNodeCompareEvent; // Compare two nodes FOnNodeNew: TXmlNodeEvent; // Called after a node is added FOnNodeLoaded: TXmlNodeEvent; // Called after a node is loaded completely FOnProgress: TXmlProgressEvent; // Called after a node is loaded/saved, with the current position in the file FOnUnicodeLoss: TNotifyEvent; // This event is called when there is a warning for unicode conversion loss when reading unicode procedure DoNodeNew(Node: TXmlNode); procedure DoNodeLoaded(Node: TXmlNode); procedure DoUnicodeLoss(Sender: TObject); function GetCommentString: UTF8String; procedure SetCommentString(const Value: UTF8String); function GetEntityByName(AName: UTF8String): UTF8String; function GetRoot: TXmlNode; function GetEncodingString: UTF8String; procedure SetEncodingString(const Value: UTF8String); function GetVersionString: UTF8String; procedure SetVersionString(const Value: UTF8String); function GetStyleSheetNode: TXmlNode; function GetUtf8Encoded: boolean; protected procedure CopyFrom(Source: TNativeXml); virtual; procedure DoProgress(Size: integer); function LineFeed: UTF8String; virtual; procedure ParseDTD(ANode: TXmlNode; S: TStream); virtual; procedure ReadFromStream(S: TStream); virtual; procedure WriteToStream(S: TStream); virtual; procedure SetDefaults; virtual; public // Create a new NativeXml document which can then be used to read or write XML files. // A document that is created with Create must later be freed using Free. // Example: // <Code> // var // ADoc: TNativeXml; // begin // ADoc := TNativeXml.Create; // try // ADoc.LoadFromFile('c:\\temp\\myxml.xml'); // {do something with the document here} // finally // ADoc.Free; // end; // end; // </Code> constructor Create; virtual; // Use CreateName to Create a new Xml document that will automatically // contain a root element with name ARootName. constructor CreateName(const ARootName: UTF8String); virtual; // Destroy will free all data in the TNativeXml object. This includes the // root node and all subnodes under it. Do not call Destroy directly, call // Free instead. destructor Destroy; override; // When calling Assign with a Source object that is a TNativeXml, will cause // it to copy all data from Source. procedure Assign(Source: TPersistent); override; // Call Clear to remove all data from the object, and restore all defaults. procedure Clear; virtual; // Function IsEmpty returns true if the root is clear, or in other words, the // root contains no value, no name, no subnodes and no attributes. function IsEmpty: boolean; virtual; // Load an XML document from the TStream object in Stream. The LoadFromStream // procedure will raise an exception of type EFilerError when it encounters // non-wellformed XML. This method can be used with any TStream descendant. // See also LoadFromFile and ReadFromString. procedure LoadFromStream(Stream: TStream); virtual; // Call procedure LoadFromFile to load an XML document from the filename // specified. See Create for an example. The LoadFromFile procedure will raise // an exception of type EFilerError when it encounters non-wellformed XML. procedure LoadFromFile(const AFileName: string); virtual; // Call procedure ReadFromString to load an XML document from the UTF8String AValue. // The ReadFromString procedure will raise an exception of type EFilerError // when it encounters non-wellformed XML. procedure ReadFromString(const AValue: UTF8String); virtual; // Call ResolveEntityReferences after the document has been loaded to resolve // any present entity references (&Entity;). When an entity is found in the // DTD, it will replace the entity reference. Whenever an entity contains // XML markup, it will be parsed and become part of the document tree. Since // calling ResolveEntityReferences is adding quite some extra overhead, it // is not done automatically. If you want to do the entity replacement, a good // moment to call ResolveEntityReferences is right after LoadFromFile. procedure ResolveEntityReferences; // Call SaveToStream to save the XML document to the Stream. Stream // can be any TStream descendant. Set XmlFormat to xfReadable if you want // the stream to contain indentations to make the XML more human-readable. This // is not the default and also not compliant with the XML specification. See // SaveToFile for information on how to save in special encoding. procedure SaveToStream(Stream: TStream); virtual; // Call SaveToFile to save the XML document to a file with FileName. If the // filename exists, it will be overwritten without warning. If the file cannot // be created, a standard I/O exception will be generated. Set XmlFormat to // xfReadable if you want the file to contain indentations to make the XML // more human-readable. This is not the default and also not compliant with // the XML specification.<p> // Saving to special encoding types can be achieved by setting two properties // before saving: // * ExternalEncoding // * EncodingString // ExternalEncoding can be se8bit (for plain ascii), seUtf8 (UTF-8), seUtf16LE // (for unicode) or seUtf16BE (unicode big endian).<p> Do not forget to also // set the EncodingString (e.g. "UTF-8" or "UTF-16") which matches with your // ExternalEncoding. procedure SaveToFile(const AFileName: string); virtual; // Call WriteToString to save the XML document to a UTF8String. Set XmlFormat to // xfReadable if you want the UTF8String to contain indentations to make the XML // more human-readable. This is not the default and also not compliant with // the XML specification. function WriteToString: UTF8String; virtual; // Set AbortParsing to True if you use the OnNodeNew and OnNodeLoaded events in // a SAX-like manner, and you want to abort the parsing process halfway. Example: // <code> // procedure MyForm.NativeXmlNodeLoaded(Sender: TObject; Node: TXmlNode); // begin // if (Node.Name = 'LastNode') and (Sender is TNativeXml) then // TNativeXml(Sender).AbortParsing := True; // end; // </code> property AbortParsing: boolean read FAbortParsing write FAbortParsing; // Choose what kind of binary encoding will be used when calling TXmlNode.BufferRead // and TXmlNode.BufferWrite. Default value is xbeBase64. property BinaryEncoding: TBinaryEncodingType read FBinaryEncoding write FBinaryEncoding; // A comment string above the root element \<!--{comment}--\> can be accessed with // this property. \Assign a comment to this property to add it to the XML document. // Use property RootNodeList to add/insert/extract multiple comments. property CommentString: UTF8String read GetCommentString write SetCommentString; // Set DropCommentsOnParse if you're not interested in any comment nodes in your object // model data. All comments encountered during parsing will simply be skipped and // not added as a node with ElementType = xeComment (which is default). Note that // when you set this option, you cannot later reconstruct an XML file with the comments // back in place. property DropCommentsOnParse: boolean read FDropCommentsOnParse write FDropCommentsOnParse; // Encoding string (e.g. "UTF-8" or "UTF-16"). This encoding string is stored in // the header. // Example: In order to get this header: // <?xml version="1.0" encoding="UTF-16" ?> // enter this code: // <CODE>MyXmlDocument.EncodingString := 'UTF-16';</CODE> // When reading a file, EncodingString will contain the encoding used. property EncodingString: UTF8String read GetEncodingString write SetEncodingString; // Returns the value of the named entity in Name, where name should be stripped // of the leading & and trailing ;. These entity values are parsed from the // Doctype declaration (if any). property EntityByName[AName: UTF8String]: UTF8String read GetEntityByName; // ExternalEncoding defines in which format XML files are saved. Set ExternalEncoding // to se8bit to save as plain text files, to seUtf8 to save as UTF8 files (with // Byte Order Mark #EF BB FF) and to seUTF16LE to save as unicode (Byte Order // Mark #FF FE). When reading an XML file, the value of ExternalEncoding will // be set according to the byte order mark and/or encoding declaration found. property ExternalEncoding: TStringEncodingType read FExternalEncoding write FExternalEncoding; // When converting floating point values to strings (e.g. in WriteFloat), // NativeXml will allow to output scientific notation in some cases, if the // result is significantly shorter than normal output, but only if the value // of FloatAllowScientific is True (default). property FloatAllowScientific: boolean read FFloatAllowScientific write FFloatAllowScientific; // When converting floating point values to strings (e.g. in WriteFloat), // NativeXml will use this number of significant digits. The default is // cDefaultFloatSignificantDigits, and set to 6. property FloatSignificantDigits: integer read FFloatSignificantDigits write FFloatSignificantDigits; // IndentString is the string used for indentations. By default, it is two // spaces: ' '. Set IndentString to something else if you need to have // specific indentation, or set it to an empty string to avoid indentation. property IndentString: UTF8String read FIndentString write FIndentString; // Root is the topmost element in the XML document. Access Root to read any // child elements. When creating a new XML document, you can automatically // include a Root node, by creating using CreateName. property Root: TXmlNode read GetRoot; // RootNodeList can be used to directly access the nodes in the root of the // XML document. Usually this list consists of one declaration node followed // by a normal node which is the Root. You can use this property to add or // delete comments, stylesheets, dtd's etc. property RootNodeList: TXmlNode read FRootNodes; // Get the stylesheet node used for this XML document. If the node does not // exist yet, it will be created (thus if you use this property, and don't // set any of the attributes, an empty stylesheet node will be the result). property StyleSheetNode: TXmlNode read GetStyleSheetNode; // Set UseFullNodes to True before saving the XML document to ensure that all // nodes are represented by <Node>...</Node> instead of the short version // <Node/>. UseFullNodes is False by default. property UseFullNodes: boolean read FUseFullNodes write FUseFullNodes; // Set UseLocalBias to True if you want to consider the local timezone bias // when writing and reading datetime values. UseLocalBias is False by default. property UseLocalBias: Boolean read FUseLocalBias write FUseLocalBias; // This property is here for backwards compat: all strings inside NativeXml // are UTF8Strings, the internal encoding is always UTF8. property Utf8Encoded: boolean read GetUtf8Encoded; // After reading, this property contains the XML version (usually "1.0"). property VersionString: UTF8String read GetVersionString write SetVersionString; // Set WriteOnDefault to False if you do not want to write default values to // the XML document. This option can avoid creating huge documents with // redundant info, and will speed up writing. property WriteOnDefault: boolean read FWriteOnDefault write FWriteOnDefault; // XmlFormat by default is set to xfCompact. This setting is compliant to the spec, // and NativeXml will only generate XML files with #$0A as control AnsiCharacter. // By setting XmlFormat to xfReadable, you can generate easily readable XML // files that contain indentation and carriage returns after each element. property XmlFormat: TXmlFormatType read FXmlFormat write FXmlFormat; // ParserWarnings by default is True. If True, the parser will raise an // exception in cases where the XML document is not technically valid. If False, // the parser will try to ignore non-critical warnings. Set ParserWarnings // to False for some types of XML-based documents such as SOAP messages. property ParserWarnings: boolean read FParserWarnings write FParserWarnings; // This event is called whenever a node's SortChildNodes method is called and // no direct compare method is provided. Implement this event if you want to // use object-event based methods for comparison of nodes. property OnNodeCompare: TXmlNodeCompareEvent read FOnNodeCompare write FOnNodeCompare; // This event is called whenever the parser has encountered a new node. property OnNodeNew: TXmlNodeEvent read FOnNodeNew write FOnNodeNew; // This event is called when the parser has finished parsing the node, and // has created its complete contents in memory. property OnNodeLoaded: TXmlNodeEvent read FOnNodeLoaded write FOnNodeLoaded; // OnProgress is called during loading and saving of the XML document. The // Size parameter contains the position in the stream. This event can be used // to implement a progress indicator during loading and saving. The event is // called after each node that is read or written. property OnProgress: TXmlProgressEvent read FOnProgress write FOnProgress; // This event is called if there is a warning for unicode conversion loss, // when reading from Unicode streams or files. property OnUnicodeLoss: TNotifyEvent read FOnUnicodeLoss write FOnUnicodeLoss; end; // This enumeration defines the conversion stream access mode. TsdStreamModeType = ( umUnknown, // The stream access mode is not yet known umRead, // UTF stream opened for reading umWrite // UTF stream opened for writing ); // TBigByteArray is an array of bytes like the standard TByteArray (windows // unit) but which can contain up to MaxInt bytes. This type helps avoiding // range check errors when working with buffers larger than 32768 bytes. TBigByteArray = array[0..MaxInt - 1] of byte; PBigByteArray = ^TBigByteArray; {$IFDEF CLR} // not implemented TsdBufferedStream = class(TStream) private FStream: TStream; FOwned: Boolean; protected procedure SetSize(NewSize: Int64); override; public constructor Create(AStream: TStream; Owned: Boolean = False); destructor Destroy; override; function Read(var Buffer: array of Byte; Offset, Count: Longint): Longint; override; function Write(const Buffer: array of Byte; Offset, Count: Longint): Longint; override; function Seek(const Offset: Int64; Origin: TSeekOrigin): Int64; override; end; TsdBufferedReadStream = TsdBufferedStream; TsdBufferedWriteStream = TsdBufferedStream; {$ELSE} // TsdBufferedReadStream is a buffered stream that takes another TStream // and reads only buffer-wise from it, and reads to the stream are first // done from the buffer. This stream type can only support reading. TsdBufferedReadStream = class(TStream) private FStream: TStream; FBuffer: PBigByteArray; FPage: integer; FBufPos: integer; FBufSize: integer; FPosition: longint; FOwned: boolean; FMustCheck: boolean; protected procedure CheckPosition; public // Create the buffered reader stream by passing the source stream in AStream, // this source stream must already be initialized. If Owned is set to True, // the source stream will be freed by TsdBufferedReadStream. constructor Create(AStream: TStream; Owned: boolean = False); destructor Destroy; override; function Read(var Buffer; Count: Longint): Longint; override; function Write(const Buffer; Count: Longint): Longint; override; function Seek(Offset: Longint; Origin: Word): Longint; override; end; // TsdBufferedWriteStream is a buffered stream that takes another TStream // and writes only buffer-wise to it, and writes to the stream are first // done to the buffer. This stream type can only support writing. TsdBufferedWriteStream = class(TStream) private FStream: TStream; FBuffer: PBigByteArray; FBufPos: integer; FPosition: longint; FOwned: boolean; protected procedure Flush; public // Create the buffered writer stream by passing the destination stream in AStream, // this destination stream must already be initialized. If Owned is set to True, // the destination stream will be freed by TsdBufferedWriteStream. constructor Create(AStream: TStream; Owned: boolean = False); destructor Destroy; override; function Read(var Buffer; Count: Longint): Longint; override; function Write(const Buffer; Count: Longint): Longint; override; function Seek(Offset: Longint; Origin: Word): Longint; override; end; {$ENDIF} // TsdCodecStream is the base codec class for reading and writing encoded files. // See TsdUtf8Stream for more information. TsdCodecStream = class(TStream) private FBuffer: UTF8String; // Buffer that holds temporary utf8 characters FBufferPos: integer; // Current character in buffer FEncoding: TStringEncodingType; // Type of string encoding used for the external stream FMode: TsdStreamModeType; // Access mode of this UTF stream, determined after first read/write FPosMin1: integer; // Position for seek(-1) FPosMin2: integer; // Position for seek(-2) FStream: TStream; // Referenced stream FSwapByteOrder: boolean; FWarningUnicodeLoss: boolean; // There was a warning for a unicode conversion loss FWriteBom: boolean; FOnUnicodeLoss: TNotifyEvent; // This event is called if there is a warning for unicode conversion loss protected function ReadByte: byte; virtual; procedure StorePrevPositions; virtual; procedure WriteByte(const B: byte); virtual; procedure WriteBuf(const Buffer{$IFDEF CLR}: TBytes{$ENDIF}; Offset, Count: longint); virtual; function InternalRead(var Buffer{$IFDEF CLR}: array of Byte{$ENDIF}; Offset, Count: Longint): Longint; function InternalSeek(Offset: Longint; Origin: TSeekOrigin): Longint; function InternalWrite(const Buffer{$IFDEF CLR}: array of Byte{$ENDIF}; Offset, Count: Longint): Longint; {$IFDEF CLR} procedure SetSize(NewSize: Int64); override; {$ENDIF} public // Call Create to create a new TsdCodectream based on an input or output stream // in AStream. After the first Read, the input streamtype will be determined, // and the Encoding property will be set accordingly. When using Write to // write data to the referenced stream, the Encoding property must be set prior // to this, indicating what kind of stream to produce. constructor Create(AStream: TStream); virtual; // Read Count bytes from the referenced stream, and put them in Buffer. The function // returns the actual number of bytes read. The codec stream can only read // one byte at the time! {$IFDEF CLR} function Read(var Buffer: array of Byte; Offset, Count: Longint): Longint; override; {$ELSE} function Read(var Buffer; Count: Longint): Longint; override; {$ENDIF} // Seek to a new position in the stream, with Origin as a reference. The codec // stream can not seek when writing, and when reading can only go back one // AnsiCharacter, or return a position. Position returned is the position // in the referenced stream. {$IFDEF CLR} function Seek(const Offset: Int64; Origin: TSeekOrigin): Int64; override; {$ELSE} function Seek(Offset: Longint; Origin: Word): Longint; override; {$ENDIF} // Write Count bytes from Buffer to the referenced stream, The function // returns the actual number of bytes written. {$IFDEF CLR} function Write(const Buffer: array of Byte; Offset, Count: Longint): Longint; override; {$ELSE} function Write(const Buffer; Count: Longint): Longint; override; {$ENDIF} // Set Encoding when writing to the preferred encoding of the output stream, // or read Encoding after reading the output stream to determine encoding type. property Encoding: TstringEncodingType read FEncoding write FEncoding; // \Read this value after loading an XML file. It will be True if there was a // warning for a unicode conversion loss. property WarningUnicodeLoss: boolean read FWarningUnicodeLoss; // This event is called if there is a warning for unicode conversion loss. property OnUnicodeLoss: TNotifyEvent read FOnUnicodeLoss write FOnUnicodeLoss; end; // TsdUdf8tream is a conversion stream that will load ANSI, UTF8 or // Unicode files and convert them into UTF8 only. The stream can // also save UTF8 data as Ansi, UTF8 or Unicode. TsdUtf8Stream = class(TsdCodecStream) private protected function ReadByte: byte; override; procedure WriteByte(const B: byte); override; procedure WriteBuf(const Buffer{$IFDEF CLR}: TBytes{$ENDIF}; Offset, Count: longint); override; end; // TsdSurplusReader is a simple class that can store a few surplus characters // and returns these first before reading from the underlying stream TsdSurplusReader = class private FStream: TStream; FSurplus: UTF8String; public constructor Create(AStream: TStream); property Surplus: UTF8String read FSurplus write FSurplus; function ReadChar(var Ch: AnsiChar): integer; function ReadCharSkipBlanks(var Ch: AnsiChar): boolean; end; // Simple string builder class that allocates string memory more effectively // to avoid repeated re-allocation TsdStringBuilder = class private FData: UTF8String; FCurrentIdx: integer; function GetData(Index: integer): AnsiChar; procedure Reallocate(RequiredLength: integer); public constructor Create; procedure Clear; procedure AddChar(Ch: AnsiChar); procedure AddString(var S: UTF8String); function StringCopy(AFirst, ALength: integer): UTF8String; function Value: UTF8String; property Length: integer read FCurrentIdx; property Data[Index: integer]: AnsiChar read GetData; default; end; // String functions function sdUTF8StringReplace(const S, OldPattern, NewPattern: UTF8String): UTF8String; // Escape all required characters in string AValue. function sdUTF8EscapeString(const AValue: UTF8String): UTF8String; // Replace all escaped characters in string AValue by their original. This includes // character references using &#...; and &#x...; function sdUTF8UnEscapeString(const AValue: UTF8String): UTF8String; // Enclose the string AValue in quotes. function sdUTF8QuotedString(const AValue: UTF8String): UTF8String; // Remove the quotes from string AValue. function sdUTF8UnQuotedString(const AValue: UTF8String): UTF8String; // This function adds control characters Chars repeatedly after each Interval // of characters to UTF8String Value. function sdAddControlChars(const AValue: UTF8String; const Chars: UTF8String; Interval: integer): UTF8String; // This function removes control characters from UTF8String AValue (Tab, CR, LF and Space) function sdRemoveControlChars(const AValue: UTF8String): UTF8String; // Convert the UTF8String ADate to a TDateTime according to the W3C date/time specification // as found here: http://www.w3.org/TR/NOTE-datetime // If there is a conversion error, an exception will be raised. function sdDateTimeFromString(const ADate: UTF8String; UseLocalBias: Boolean = False): TDateTime; // Convert the UTF8String ADate to a TDateTime according to the W3C date/time specification // as found here: http://www.w3.org/TR/NOTE-datetime // If there is a conversion error, the default value ADefault is returned. function sdDateTimeFromStringDefault(const ADate: UTF8String; ADefault: TDateTime; UseLocalBias: Boolean = False): TDateTime; // Convert the TDateTime ADate to a UTF8String according to the W3C date/time specification // as found here: http://www.w3.org/TR/NOTE-datetime function sdDateTimeToString(ADate: TDateTime; UseLocalBias: Boolean = False): UTF8String; // Convert a number to a UTF8String, using SignificantDigits to indicate the number of // significant digits, and AllowScientific to allow for scientific notation if that // results in much shorter notatoin. function sdWriteNumber(Value: double; SignificantDigits: integer; AllowScientific: boolean): UTF8String; // Write an UTF8String to the stream procedure sdUTF8WriteStringToStream(S: TStream; const AString: UTF8String); // Turn Ch to an UpCase character ('a'..'z' becomes 'A'..'Z') function sdUpCase(Ch: AnsiChar): AnsiChar; // Conversion between Ansi, UTF8 and Unicode // Convert a UnicodeString to a UTF8 encoded string function sdUnicodeToUtf8(const W: UnicodeString): UTF8String; // Convert a AnsiString to a UTF8 encoded string function sdAnsiToUtf8(const S: AnsiString): UTF8String; // Convert a UTF8 encoded string to a UnicodeString function sdUtf8ToUnicode(const S: UTF8String): UnicodeString; // Convert a UTF8 encoded string to a AnsiString. This might cause loss! function sdUtf8ToAnsi(const S: UTF8String): AnsiString; // parse functions // Find SubString within UTF8String S, only process characters between Start and Close. // First occurrance is reported in APos. If something is found, function returns True. function sdUTF8FindString(const SubString, S: UTF8String; Start, Close: integer; var APos: integer): boolean; // Detect if the SubString matches the characters in S from position Start. S may be // actually longer than SubString, only length(SubString) characters are checked. function sdUTF8MatchString(const SubString: UTF8String; const S: UTF8String; Start: integer): boolean; // Find all Name="Value" pairs in UTF8String AValue (from Start to Close - 1), and put // the resulting attributes in stringlist Attributes. This stringlist must already // be initialized when calling this function. procedure sdUTF8ParseAttributes(const AValue: UTF8String; Start, Close: integer; Attributes: TsdUTF8StringList); // Trim the UTF8String AValue between Start and Close - 1 (remove whitespaces at start // and end), not by adapting the UTF8String but by adjusting the Start and Close indices. // If the resulting UTF8String still has a length > 0, the function returns True. function sdUTF8TrimPos(const AValue: UTF8String; var Start, Close: integer): boolean; // Trim the UTF8String function sdUTF8Trim(const AValue: UTF8String): UTF8String; // Encoding/Decoding functions // Encode binary data in Source as BASE64. The function returns the BASE64 encoded // data as UTF8String, without any linebreaks. function EncodeBase64(const Source: RawByteString): UTF8String; // Decode BASE64 data in Source into binary data. The function returns the binary // data as UTF8String. Use a TStringStream to convert this data to a stream. The Source // UTF8String may contain linebreaks and control characters, these will be stripped. function DecodeBase64(const Source: UTF8String): RawByteString; // Encode binary data in Source as BINHEX. The function returns the BINHEX encoded // data as UTF8String, without any linebreaks. function EncodeBinHex(const Source: RawByteString): UTF8String; // Decode BINHEX data in Source into binary data. The function returns the binary // data as UTF8String. Use a TStringStream to convert this data to a stream. The Source // UTF8String may contain linebreaks and control characters, these will be stripped. function DecodeBinHex(const Source: UTF8String): RawByteString; resourcestring sxeErrorUnexpectedChar = 'Illegal character; expected "%s"'; sxeErrorCalcStreamLength = 'Error while calculating streamlength'; sxeMissingDataInBinaryStream = 'Missing data in binary stream'; sxeMissingElementName = 'Missing element name'; sxeMissingCloseTag = 'Missing close tag in element %s'; sxeMissingDataAfterGreaterThan = 'Missing data after "<" in element %s'; sxeMissingLessThanInCloseTag = 'Missing ">" in close tag of element %s'; sxeIncorrectCloseTag = 'Incorrect close tag in element %s'; sxeIllegalCharInNodeName = 'Illegal character in node name "%s"'; sxeMoreThanOneRootElement = 'More than one root element found in xml'; sxeMoreThanOneDeclaration = 'More than one xml declaration found in xml'; sxeDeclarationMustBeFirstElem = 'Xml declaration must be first element'; sxeMoreThanOneDoctype = 'More than one doctype declaration found in root'; sxeDoctypeAfterRootElement = 'Doctype declaration found after root element'; sxeNoRootElement = 'No root element found in xml'; sxeIllegalElementType = 'Illegal element type'; sxeCDATAInRoot = 'No CDATA allowed in root'; sxeRootElementNotDefined = 'XML root element not defined.'; sxeCodecStreamNotAssigned = 'Encoding stream unassigned'; sxeUnsupportedEncoding = 'Unsupported string encoding'; sxeCannotReadCodecForWriting = 'Cannot read from a conversion stream opened for writing'; sxeCannotWriteCodecForReading = 'Cannot write to an UTF stream opened for reading'; sxeCannotReadMultipeChar = 'Cannot read multiple chars from conversion stream at once'; sxeCannotPerformSeek = 'Cannot perform seek on codec stream'; sxeCannotSeekBeforeReadWrite = 'Cannot seek before reading or writing in conversion stream'; sxeCannotSeek = 'Cannot perform seek in conversion stream'; sxeCannotWriteToOutputStream = 'Cannot write to output stream'; sxeXmlNodeNotAssigned = 'XML Node is not assigned'; sxeCannotConverToBool = 'Cannot convert value to bool'; sxeCannotConvertToFloat = 'Cannot convert value to float'; sxeSignificantDigitsOutOfRange = 'Significant digits out of range'; implementation type // Internal type TTagType = record Start: UTF8String; Close: UTF8String; Style: TXmlElementType; end; PByte = ^byte; TBomInfo = packed record BOM: array[0..3] of byte; Len: integer; Encoding: TStringEncodingType; HasBOM: boolean; end; const // Count of different escape characters cEscapeCount = 5; // These are characters that must be escaped. Note that "&" is first since // when another would be replaced first (eg ">" by "<") this could // cause the new "&" in "<" to be replaced by "&"; cEscapes: array[0..cEscapeCount - 1] of UTF8String = ('&', '<', '>', '''', '"'); // These are the strings that replace the escape strings - in the same order cReplaces: array[0..cEscapeCount - 1] of UTF8String = ('&', '<', '>', ''', '"'); cQuoteChars: set of AnsiChar = ['"', '''']; cControlChars: set of AnsiChar = [#9, #10, #13, #32]; {Tab, LF, CR, Space} // Count of different XML tags cTagCount = 12; cTags: array[0..cTagCount - 1] of TTagType = ( // The order is important here; the items are searched for in appearing order (Start: '<![CDATA['; Close: ']]>'; Style: xeCData), (Start: '<!DOCTYPE'; Close: '>'; Style: xeDoctype), (Start: '<!ELEMENT'; Close: '>'; Style: xeElement), (Start: '<!ATTLIST'; Close: '>'; Style: xeAttList), (Start: '<!ENTITY'; Close: '>'; Style: xeEntity), (Start: '<!NOTATION'; Close: '>'; Style: xeNotation), (Start: '<?xml-stylesheet'; Close: '?>'; Style: xeStylesheet), (Start: '<?xml'; Close: '?>'; Style: xeDeclaration), (Start: '<!--'; Close: '-->'; Style: xeComment), (Start: '<!'; Close: '>'; Style: xeExclam), (Start: '<?'; Close: '?>'; Style: xeQuestion), (Start: '<'; Close: '>'; Style: xeNormal) ); // direct tags are derived from Normal tags by checking for the /> // These constant are used when generating hexchars from buffer data cHexChar: array[0..15] of AnsiChar = '0123456789ABCDEF'; cHexCharLoCase: array[0..15] of AnsiChar = '0123456789abcdef'; // These AnsiCharacters are used when generating BASE64 AnsiChars from buffer data cBase64Char: array[0..63] of AnsiChar = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; cBase64PadChar: AnsiChar = '='; // The amount of bytes to allocate with each increase of the value buffer cNodeValueBuf = 2048; // byte order marks for strings // Unicode text files should contain $FFFE as first character to identify such a file clearly. Depending on the system // where the file was created on this appears either in big endian or little endian style. const cBomInfoCount = 15; const cBomInfo: array[0..cBomInfoCount - 1] of TBomInfo = ( (BOM: ($00,$00,$FE,$FF); Len: 4; Encoding: seUCS4BE; HasBOM: true), (BOM: ($FF,$FE,$00,$00); Len: 4; Encoding: seUCS4LE; HasBOM: true), (BOM: ($00,$00,$FF,$FE); Len: 4; Encoding: seUCS4_2143; HasBOM: true), (BOM: ($FE,$FF,$00,$00); Len: 4; Encoding: seUCS4_3412; HasBOM: true), (BOM: ($FE,$FF,$00,$00); Len: 2; Encoding: seUTF16BE; HasBOM: true), (BOM: ($FF,$FE,$00,$00); Len: 2; Encoding: seUTF16LE; HasBOM: true), (BOM: ($EF,$BB,$BF,$00); Len: 3; Encoding: seUTF8; HasBOM: true), (BOM: ($00,$00,$00,$3C); Len: 4; Encoding: seUCS4BE; HasBOM: false), (BOM: ($3C,$00,$00,$00); Len: 4; Encoding: seUCS4LE; HasBOM: false), (BOM: ($00,$00,$3C,$00); Len: 4; Encoding: seUCS4_2143; HasBOM: false), (BOM: ($00,$3C,$00,$00); Len: 4; Encoding: seUCS4_3412; HasBOM: false), (BOM: ($00,$3C,$00,$3F); Len: 4; Encoding: seUTF16BE; HasBOM: false), (BOM: ($3C,$00,$3F,$00); Len: 4; Encoding: seUTF16LE; HasBOM: false), (BOM: ($3C,$3F,$78,$6D); Len: 4; Encoding: seAnsi; HasBOM: false), (BOM: ($4C,$6F,$A7,$94); Len: 4; Encoding: seEBCDIC; HasBOM: false) ); // .NET compatible stub for TBytes (array of byte) type {$IFNDEF CLR} type TBytes = TBigByteArray; {$ENDIF} function StrScan(const Str: PAnsiChar; Chr: AnsiChar): PAnsiChar; begin Result := Str; while Result^ <> Chr do begin if Result^ = #0 then begin Result := nil; Exit; end; Inc(Result); end; end; function UTF8QuotedStr(const S: UTF8String; Quote: AnsiChar): UTF8String; var P, Src, Dest: PAnsiChar; AddCount: Integer; begin AddCount := 0; P := StrScan(PAnsiChar(S), Quote); while P <> nil do begin Inc(P); Inc(AddCount); P := StrScan(P, Quote); end; if AddCount = 0 then begin Result := UTF8String(Quote) + S + UTF8String(Quote); Exit; end; SetLength(Result, Length(S) + AddCount + 2); Dest := Pointer(Result); Dest^ := Quote; Inc(Dest); Src := Pointer(S); P := StrScan(Src, Quote); repeat Inc(P); Move(Src^, Dest^, P - Src); Inc(Dest, P - Src); Dest^ := Quote; Inc(Dest); Src := P; P := StrScan(Src, Quote); until P = nil; P := StrEnd(Src); Move(Src^, Dest^, P - Src); Inc(Dest, P - Src); Dest^ := Quote; end; function UTF8ExtractQuotedStr(const S: UTF8String; Quote: AnsiChar): UTF8String; var P, Src, Dest: PAnsiChar; DropCount: Integer; begin Result := ''; Src := PAnsiChar(S); if (Src = nil) or (Src^ <> Quote) then Exit; Inc(Src); DropCount := 1; P := Src; Src := StrScan(Src, Quote); while Src <> nil do begin Inc(Src); if Src^ <> Quote then Break; Inc(Src); Inc(DropCount); Src := StrScan(Src, Quote); end; if Src = nil then Src := StrEnd(P); if ((Src - P) <= 1) then Exit; if DropCount = 1 then SetString(Result, P, Src - P - 1) else begin SetLength(Result, Src - P - DropCount); Dest := PAnsiChar(Result); Src := StrScan(P, Quote); while Src <> nil do begin Inc(Src); if Src^ <> Quote then Break; Move(P^, Dest^, Src - P); Inc(Dest, Src - P); Inc(Src); P := Src; Src := StrScan(Src, Quote); end; if Src = nil then Src := StrEnd(P); Move(P^, Dest^, Src - P - 1); end; end; function Utf8Pos(const Substr, S: UTF8String): Integer; var i, x: Integer; Len, LenSubStr: Integer; begin i := 1; LenSubStr := Length(SubStr); Len := Length(S) - LenSubStr + 1; while i <= Len do begin if S[i] = SubStr[1] then begin x := 1; while (x < LenSubStr) and (S[i + x] = SubStr[x + 1]) do Inc(x); if (x = LenSubStr) then begin Result := i; exit; end; end; Inc(i); end; Result := 0; end; // .NET-compatible TStream.Write function StreamWrite(Stream: TStream; const Buffer{$IFDEF CLR}: TBytes{$ENDIF}; Offset, Count: Longint): Longint; begin {$IFDEF CLR} Result := Stream.Write(Buffer, Offset, Count); {$ELSE} Result := Stream.Write(TBytes(Buffer)[Offset], Count); {$ENDIF} end; {$IFNDEF CLR} // Delphi's implementation of TStringStream is severely flawed, it does a SetLength // on each write, which slows down everything to a crawl. This implementation over- // comes this issue. type TsdUTF8StringStream = class(TMemoryStream) public constructor Create(const S: UTF8String); function DataString: UTF8String; end; constructor TsdUTF8StringStream.Create(const S: UTF8String); begin inherited Create; SetSize(length(S)); if Size > 0 then begin Write(S[1], Size); Position := 0; end; end; function TsdUTF8StringStream.DataString: UTF8String; begin SetLength(Result, Size); if Size > 0 then begin Position := 0; Read(Result[1], length(Result)); end; end; {$ELSE} // In .NET we use the standard TStringStream type TsdUTF8StringStream = TStringStream; {$ENDIF} // Utility functions function Min(A, B: integer): integer; begin if A < B then Result := A else Result := B; end; function Max(A, B: integer): integer; begin if A > B then Result := A else Result := B; end; function sdUTF8StringReplace(const S, OldPattern, NewPattern: UTF8String): UTF8String; var SearchStr, NewStr: UTF8String; Offset: Integer; begin // Case Sensitive, Replace All SearchStr := S; NewStr := S; Result := ''; while SearchStr <> '' do begin Offset := UTF8Pos(OldPattern, SearchStr); if Offset = 0 then begin Result := Result + NewStr; Break; end; Result := Result + Copy(NewStr, 1, Offset - 1) + NewPattern; NewStr := Copy(NewStr, Offset + Length(OldPattern), MaxInt); SearchStr := Copy(SearchStr, Offset + Length(OldPattern), MaxInt); end; end; function sdUTF8EscapeString(const AValue: UTF8String): UTF8String; var i: integer; begin Result := AValue; for i := 0 to cEscapeCount - 1 do Result := sdUTF8StringReplace(Result, cEscapes[i], cReplaces[i]); end; function sdUTF8UnEscapeString(const AValue: UTF8String): UTF8String; var SearchStr, Reference, Replace: UTF8String; i, Offset, Code: Integer; W: word; begin SearchStr := AValue; Result := ''; while SearchStr <> '' do begin // find '&' Offset := Utf8Pos('&', SearchStr); if Offset = 0 then begin // Nothing found Result := Result + SearchStr; Break; end; Result := Result + Copy(SearchStr, 1, Offset - 1); SearchStr := Copy(SearchStr, Offset, MaxInt); // find next ';' Offset := Utf8Pos(';', SearchStr); if Offset = 0 then begin // Error: encountered a '&' but not a ';'.. we will ignore, just return // the unmodified value Result := Result + SearchStr; Break; end; // Reference Reference := copy(SearchStr, 1, Offset); SearchStr := Copy(SearchStr, Offset + 1, MaxInt); Replace := Reference; // See if it is a Character reference if copy(Reference, 1, 2) = '&#' then begin Reference := copy(Reference, 3, length(Reference) - 3); if length(Reference) > 0 then begin if sdUpCase(Reference[1]) = 'X' then // Hex notation Reference[1] := '$'; Code := StrToIntDef(string(Reference), -1); if (Code >= 0) and (Code < $FFFF) then begin W := Code; Replace := sdUnicodeToUtf8(UnicodeChar(W)); end; end; end else begin // Look up default escapes for i := 0 to cEscapeCount - 1 do if Reference = cReplaces[i] then begin // Replace Replace := cEscapes[i]; Break; end; end; // New result Result := Result + Replace; end; end; function sdUTF8QuotedString(const AValue: UTF8String): UTF8String; var Quote: AnsiChar; begin Quote := '"'; if UTF8Pos('"', AValue) > 0 then Quote := ''''; {$IFDEF CLR} Result := QuotedStr(AValue, AQuoteChar); {$ELSE} Result := UTF8QuotedStr(AValue, Quote); {$ENDIF} end; function sdUTF8UnQuotedString(const AValue: UTF8String): UTF8String; var Quote: AnsiChar; begin if Length(AValue) < 2 then begin Result := AValue; exit; end; Quote := AValue[1]; if Quote in cQuoteChars then begin {$IFDEF CLR} Result := DequotedStr(AValue, Quote); {$ELSE} Result := UTF8ExtractQuotedStr(AValue, Quote); {$ENDIF} end else Result := AValue; end; function sdAddControlChars(const AValue: UTF8String; const Chars: UTF8String; Interval: integer): UTF8String; // Insert AnsiChars in AValue at each Interval AnsiChars var i, j, ALength: integer; // local procedure InsertControlChars; var k: integer; begin for k := 1 to Length(Chars) do begin Result[j] := Chars[k]; inc(j); end; end; // main begin if (Length(Chars) = 0) or (Interval <= 0) then begin Result := AValue; exit; end; // Calculate length based on original length and total extra length for control AnsiChars ALength := Length(AValue) + ((Length(AValue) - 1) div Interval + 3) * Length(Chars); SetLength(Result, ALength); // Copy and insert j := 1; for i := 1 to Length(AValue) do begin if (i mod Interval) = 1 then // Insert control AnsiChars InsertControlChars; Result[j] := AValue[i]; inc(j); end; InsertControlChars; // Adjust length dec(j); if ALength > j then SetLength(Result, j); end; function sdRemoveControlChars(const AValue: UTF8String): UTF8String; // Remove control characters from UTF8String in AValue var i, j: integer; begin Setlength(Result, Length(AValue)); i := 1; j := 1; while i <= Length(AValue) do if AValue[i] in cControlChars then inc(i) else begin Result[j] := AValue[i]; inc(i); inc(j); end; // Adjust length if i <> j then SetLength(Result, j - 1); end; function sdUTF8FindString(const SubString, S: UTF8String; Start, Close: integer; var APos: integer): boolean; // Check if the Substring matches the UTF8String S in any position in interval Start to Close - 1 // and returns found positon in APos. Result = True if anything is found. // Note: this funtion is case-insensitive var CharIndex: integer; begin Result := False; APos := 0; for CharIndex := Start to Close - Length(SubString) do if sdUTF8MatchString(SubString, S, CharIndex) then begin APos := CharIndex; Result := True; exit; end; end; function UTF8CompareText(const S1, S2: UTF8String): integer; begin Result := AnsiCompareText(string(S1), string(S2)); end; function IntToUTF8Str(Value: integer): UTF8String; begin Result := UTF8String(IntToStr(Value)); end; function Int64ToUTF8Str(Value: int64): UTF8String; begin Result := UTF8String(IntToStr(Value)); end; function sdUTF8MatchString(const SubString: UTF8String; const S: UTF8String; Start: integer): boolean; // Check if the Substring matches the string S at position Start. // Note: this funtion is case-insensitive var CharIndex: integer; begin Result := False; // Check range just in case if (Length(S) - Start + 1) < Length(Substring) then exit; CharIndex := 0; while CharIndex < Length(SubString) do if sdUpCase(SubString[CharIndex + 1]) = sdUpCase(S[Start + CharIndex]) then inc(CharIndex) else exit; // All AnsiChars were the same, so we succeeded Result := True; end; procedure sdUTF8ParseAttributes(const AValue: UTF8String; Start, Close: integer; Attributes: TsdUTF8StringList); // Convert the attributes string AValue in [Start, Close - 1] to the attributes Stringlist var i: integer; InQuotes: boolean; Quote: AnsiChar; begin InQuotes := False; Quote := '"'; if not assigned(Attributes) then exit; if not sdUTF8TrimPos(AValue, Start, Close) then exit; // Clear first Attributes.Clear; // Loop through characters for i := Start to Close - 1 do begin // In quotes? if InQuotes then begin if AValue[i] = Quote then InQuotes := False; end else begin if AValue[i] in cQuoteChars then begin InQuotes := True; Quote := AValue[i]; end; end; // Add attribute strings on each controlchar break if not InQuotes then if AValue[i] in cControlChars then begin if i > Start then Attributes.Add(copy(AValue, Start, i - Start)); Start := i + 1; end; end; // Add last attribute string if Start < Close then Attributes.Add(copy(AValue, Start, Close - Start)); // First-char "=" signs should append to previous for i := Attributes.Count - 1 downto 1 do if Attributes[i][1] = '=' then begin Attributes[i - 1] := Attributes[i - 1] + Attributes[i]; Attributes.Delete(i); end; // First-char quotes should append to previous for i := Attributes.Count - 1 downto 1 do if (Attributes[i][1] in cQuoteChars) and (UTF8Pos('=', Attributes[i - 1]) > 0) then begin Attributes[i - 1] := Attributes[i - 1] + Attributes[i]; Attributes.Delete(i); end; end; function sdUTF8TrimPos(const AValue: UTF8String; var Start, Close: integer): boolean; // Trim the string in AValue in [Start, Close - 1] by adjusting Start and Close variables begin // Checks Start := Max(1, Start); Close := Min(Length(AValue) + 1, Close); if Close <= Start then begin Result := False; exit; end; // Trim left while (Start < Close) and (AValue[Start] in cControlChars) do inc(Start); // Trim right while (Start < Close) and (AValue[Close - 1] in cControlChars) do dec(Close); // Do we have a string left? Result := Close > Start; end; function sdUTF8Trim(const AValue: UTF8String): UTF8String; var Start, Close: integer; Res: boolean; begin Start := 1; Close := length(AValue) + 1; Res := sdUTF8TrimPos(AValue, Start, Close); if Res then Result := Copy(AValue, Start, Close - Start) else Result := ''; end; procedure sdUTF8WriteStringToStream(S: TStream; const AString: UTF8String); begin if Length(AString) > 0 then begin {$IFDEF CLR} S.Write(BytesOf(AString), Length(AString)); {$ELSE} S.Write(AString[1], Length(AString)); {$ENDIF} end; end; function sdUpCase(Ch: AnsiChar): AnsiChar; begin Result := Ch; case Result of 'a'..'z': Dec(Result, Ord('a') - Ord('A')); end; end; function ReadOpenTag(AReader: TsdSurplusReader): integer; // Try to read the type of open tag from S var AIndex, i: integer; Found: boolean; Ch: AnsiChar; Candidates: array[0..cTagCount - 1] of boolean; Surplus: UTF8String; begin Surplus := ''; Result := cTagCount - 1; for i := 0 to cTagCount - 1 do Candidates[i] := True; AIndex := 1; repeat Found := False; inc(AIndex); if AReader.ReadChar(Ch) = 0 then exit; Surplus := Surplus + UTF8String(Ch); for i := cTagCount - 1 downto 0 do if Candidates[i] and (length(cTags[i].Start) >= AIndex) then begin if cTags[i].Start[AIndex] = Ch then begin Found := True; if length(cTags[i].Start) = AIndex then Result := i; end else Candidates[i] := False; end; until Found = False; // The surplus string that we already read (everything after the tag) AReader.Surplus := copy(Surplus, length(cTags[Result].Start), length(Surplus)); end; function ReadStringFromStreamUntil(AReader: TsdSurplusReader; const ASearch: UTF8String; var AValue: UTF8String; SkipQuotes: boolean): boolean; var AIndex, ValueIndex, SearchIndex: integer; LastSearchChar, Ch: AnsiChar; InQuotes: boolean; QuoteChar: AnsiChar; SB: TsdStringBuilder; begin Result := False; InQuotes := False; // Get last searchstring character AIndex := length(ASearch); if AIndex = 0 then exit; LastSearchChar := ASearch[AIndex]; SB := TsdStringBuilder.Create; try QuoteChar := #0; repeat // Add characters to the value to be returned if AReader.ReadChar(Ch) = 0 then exit; SB.AddChar(Ch); // Do we skip quotes? if SkipQuotes then begin if InQuotes then begin if (Ch = QuoteChar) then InQuotes := false; end else begin if Ch in cQuoteChars then begin InQuotes := true; QuoteChar := Ch; end; end; end; // In quotes? If so, we don't check the end condition if not InQuotes then begin // Is the last char the same as the last char of the search string? if Ch = LastSearchChar then begin // Check to see if the whole search string is present ValueIndex := SB.Length - 1; SearchIndex := length(ASearch) - 1; if ValueIndex < SearchIndex then continue; Result := True; while (SearchIndex > 0)and Result do begin Result := SB[ValueIndex] = ASearch[SearchIndex]; dec(ValueIndex); dec(SearchIndex); end; end; end; until Result; // Use only the part before the search string AValue := SB.StringCopy(1, SB.Length - length(ASearch)); finally SB.Free; end; end; function ReadStringFromStreamWithQuotes(S: TStream; const Terminator: UTF8String; var AValue: UTF8String): boolean; var Ch, QuoteChar: AnsiChar; InQuotes: boolean; SB: TsdStringBuilder; begin SB := TsdStringBuilder.Create; try QuoteChar := #0; Result := False; InQuotes := False; repeat if S.Read(Ch, 1) = 0 then exit; if not InQuotes then begin if (Ch = '"') or (Ch = '''') then begin InQuotes := True; QuoteChar := Ch; end; end else begin if Ch = QuoteChar then InQuotes := False; end; if not InQuotes and (UTF8String(Ch) = Terminator) then break; SB.AddChar(Ch); until False; AValue := SB.Value; Result := True; finally SB.Free; end; end; function GetTimeZoneBias: Integer; // uses windows unit, func GetTimeZoneInformation var TimeZoneInfo: TTimeZoneInformation; begin case GetTimeZoneInformation(TimeZoneInfo) of TIME_ZONE_ID_UNKNOWN: Result := TimeZoneInfo.Bias; TIME_ZONE_ID_STANDARD: Result := TimeZoneInfo.Bias + TimeZoneInfo.StandardBias; TIME_ZONE_ID_DAYLIGHT: Result := TimeZoneInfo.Bias + TimeZoneInfo.DaylightBias; else Result := 0; end; end; function sdDateTimeFromString(const ADate: UTF8String; UseLocalBias: Boolean): TDateTime; // Convert the string ADate to a TDateTime according to the W3C date/time specification // as found here: http://www.w3.org/TR/NOTE-datetime // contributor: Stefan Glienke var AYear, AMonth, ADay, AHour, AMin, ASec, AMSec: word; ALocalBias, ABias: Integer; begin AYear := StrToInt(string(copy(ADate, 1, 4))); AMonth := StrToInt(string(copy(ADate, 6, 2))); ADay := StrToInt(string(copy(ADate, 9, 2))); if Length(ADate) > 16 then begin AHour := StrToInt(string(copy(ADate, 12, 2))); AMin := StrToInt(string(copy(ADate, 15, 2))); ASec := StrToIntDef(string(copy(ADate, 18, 2)), 0); // They might be omitted, so default to 0 AMSec := StrToIntDef(string(copy(ADate, 21, 3)), 0); // They might be omitted, so default to 0 end else begin AHour := 0; AMin := 0; ASec := 0; AMSec := 0; end; Result := EncodeDate(AYear, AMonth, ADay) + EncodeTime(AHour, AMin, ASec, AMSec); ALocalBias := GetTimeZoneBias; if UseLocalBias then begin if (Length(ADate) > 24) then begin ABias := StrToInt(string(Copy(ADate, 25, 2))) * MinsPerHour + StrToInt(string(Copy(ADate, 28, 2))); if ADate[24] = '+' then ABias := ABias * -1; Result := Result + ABias / MinsPerDay; end; Result := Result - ALocalBias / MinsPerDay; end; end; function sdDateTimeFromStringDefault(const ADate: UTF8String; ADefault: TDateTime; UseLocalBias: Boolean): TDateTime; // Convert the string ADate to a TDateTime according to the W3C date/time specification // as found here: http://www.w3.org/TR/NOTE-datetime // If there is a conversion error, the default value ADefault is returned. begin try Result := sdDateTimeFromString(ADate, UseLocalBias); except Result := ADefault; end; end; function sdDateTimeToString(ADate: TDateTime; UseLocalBias: Boolean): UTF8String; // Convert the TDateTime ADate to a string according to the W3C date/time specification // as found here: http://www.w3.org/TR/NOTE-datetime // contributor: Stefan Glienke var AYear, AMonth, ADay, AHour, AMin, ASec, AMSec: word; ABias: Integer; const Neg: array[Boolean] of string = ('+', '-'); begin DecodeDate(ADate, AYear, AMonth, ADay); DecodeTime(ADate, AHour, AMin, ASec, AMSec); if frac(ADate) = 0 then Result := UTF8String(Format('%.4d-%.2d-%.2d', [AYear, AMonth, ADay])) else begin ABias := GetTimeZoneBias; if UseLocalBias and (ABias <> 0) then Result := UTF8String(Format('%.4d-%.2d-%.2dT%.2d:%.2d:%.2d.%.3d%s%.2d:%.2d', [AYear, AMonth, ADay, AHour, AMin, ASec, AMSec, Neg[ABias > 0], Abs(ABias) div MinsPerHour, Abs(ABias) mod MinsPerHour])) else Result := UTF8String(Format('%.4d-%.2d-%.2dT%.2d:%.2d:%.2d.%.3dZ', [AYear, AMonth, ADay, AHour, AMin, ASec, AMSec])); end; end; function sdWriteNumber(Value: double; SignificantDigits: integer; AllowScientific: boolean): UTF8String; const Limits: array[1..9] of integer = (10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000); var Limit, Limitd, PointPos, IntVal, ScPower: integer; Body: UTF8String; begin if (SignificantDigits < 1) or (SignificantDigits > 9) then raise Exception.Create(sxeSignificantDigitsOutOfRange); // Zero if Value = 0 then begin Result := '0'; exit; end; // Sign if Value < 0 then begin Result := '-'; Value := -Value; end else Result := ''; // Determine point position Limit := Limits[SignificantDigits]; Limitd := Limit div 10; PointPos := SignificantDigits; while Value < Limitd do begin Value := Value * 10; dec(PointPos); end; while Value >= Limit do begin Value := Value * 0.1; inc(PointPos); end; // Round IntVal := round(Value); // Exceptional case which happens when the value rounds up to the limit if Intval = Limit then begin IntVal := IntVal div 10; inc(PointPos); end; // Strip off any zeros, these reduce significance count while (IntVal mod 10 = 0) and (PointPos < SignificantDigits) do begin dec(SignificantDigits); IntVal := IntVal div 10; end; // Check for scientific notation ScPower := 0; if AllowScientific and ((PointPos < -1) or (PointPos > SignificantDigits + 2)) then begin ScPower := PointPos - 1; dec(PointPos, ScPower); end; // Body Body := IntToUTF8Str(IntVal); while PointPos > SignificantDigits do begin Body := Body + '0'; inc(SignificantDigits); end; while PointPos < 0 do begin Body := '0' + Body; inc(PointPos); end; if PointPos = 0 then Body := '.' + Body else if PointPos < SignificantDigits then Body := copy(Body, 1, PointPos) + '.' + copy(Body, PointPos + 1, SignificantDigits); // Final result if ScPower = 0 then Result := Result + Body else Result := Result + Body + 'E' + IntToUTF8Str(ScPower); end; {$IFDEF CLR} function sdUnicodeToUtf8(const W: UnicodeString): UTF8String; begin Result := Encoding.UTF8.GetBytes(W); end; function sdUtf8ToUnicode(const S: UTF8String): UnicodeString; begin Result := Encoding.UTF8.GetString(BytesOf(S)); end; function EncodeBase64Buf(const Buffer: TBytes; Count: Integer): UTF8String; begin Result := Convert.ToBase64String(Buffer, 0, Count); end; function EncodeBase64(const Source: UTF8String): UTF8String; begin Result := Convert.ToBase64String(BytesOf(Source)); end; procedure DecodeBase64Buf(const Source: UTF8String; var Buffer: TBytes; Count: Integer); var ADecoded: TBytes; begin ADecoded := Convert.FromBase64String(Source); if Count > Length(ADecoded) then raise EFilerError.Create(sxeMissingDataInBinaryStream); SetLength(ADecoded, Count); Buffer := ADecoded; end; function DecodeBase64(const Source: UTF8String): UTF8String; begin Result := UTF8String(Convert.FromBase64String(Source)); end; {$ELSE} function PtrUnicodeToUtf8(Dest: PAnsiChar; MaxDestBytes: Cardinal; Source: PUnicodeChar; SourceChars: Cardinal): Cardinal; var i, count: Cardinal; c: Cardinal; begin Result := 0; if not assigned(Source) or not assigned(Dest) then exit; count := 0; i := 0; while (i < SourceChars) and (count < MaxDestBytes) do begin c := Cardinal(Source[i]); Inc(i); if c <= $7F then begin Dest[count] := AnsiChar(c); Inc(count); end else if c > $7FF then begin if count + 3 > MaxDestBytes then break; Dest[count] := AnsiChar($E0 or (c shr 12)); Dest[count+1] := AnsiChar($80 or ((c shr 6) and $3F)); Dest[count+2] := AnsiChar($80 or (c and $3F)); Inc(count,3); end else begin // $7F < Source[i] <= $7FF if count + 2 > MaxDestBytes then break; Dest[count] := AnsiChar($C0 or (c shr 6)); Dest[count+1] := AnsiChar($80 or (c and $3F)); Inc(count,2); end; end; if count >= MaxDestBytes then count := MaxDestBytes-1; Dest[count] := #0; Result := count + 1; // convert zero based index to byte count end; function PtrUtf8ToUnicode(Dest: PUnicodeChar; MaxDestChars: Cardinal; Source: PAnsiChar; SourceBytes: Cardinal): Cardinal; var i, count: Cardinal; c: Byte; wc: Cardinal; begin if not assigned(Dest) or not assigned(Source) then begin Result := 0; Exit; end; Result := Cardinal(-1); count := 0; i := 0; while (i < SourceBytes) and (count < MaxDestChars) do begin wc := Cardinal(Source[i]); Inc(i); if (wc and $80) <> 0 then begin if i >= SourceBytes then // incomplete multibyte char Exit; wc := wc and $3F; if (wc and $20) <> 0 then begin c := Byte(Source[i]); Inc(i); if (c and $C0) <> $80 then // malformed trail byte or out of range char Exit; if i >= SourceBytes then // incomplete multibyte char Exit; wc := (wc shl 6) or (c and $3F); end; c := Byte(Source[i]); Inc(i); if (c and $C0) <> $80 then // malformed trail byte Exit; Dest[count] := UnicodeChar((wc shl 6) or (c and $3F)); end else Dest[count] := UnicodeChar(wc); Inc(count); end; if count >= MaxDestChars then count := MaxDestChars-1; Dest[count] := #0; Result := count + 1; end; function sdUnicodeToUtf8(const W: UnicodeString): UTF8String; var L: integer; Temp: UTF8String; begin Result := ''; if W = '' then Exit; SetLength(Temp, Length(W) * 3); // SetLength includes space for null terminator L := PtrUnicodeToUtf8(PAnsiChar(Temp), Length(Temp) + 1, PUnicodeChar(W), Length(W)); if L > 0 then SetLength(Temp, L - 1) else Temp := ''; Result := Temp; end; function sdUtf8ToUnicode(const S: UTF8String): UnicodeString; var L: Integer; Temp: UnicodeString; begin Result := ''; if S = '' then Exit; SetLength(Temp, Length(S)); L := PtrUtf8ToUnicode(PUnicodeChar(Temp), Length(Temp)+1, PAnsiChar(S), Length(S)); if L > 0 then SetLength(Temp, L-1) else Temp := ''; Result := Temp; end; function EncodeBase64Buf(const Buffer; Count: Integer): UTF8String; var i, j: integer; ACore: integer; ALong: cardinal; S: PByte; begin // Make sure ASize is always a multiple of 3, and this multiple // gets saved as 4 characters ACore := (Count + 2) div 3; // Set the length of the string that stores encoded characters SetLength(Result, ACore * 4); S := @Buffer; // Do the loop ACore times for i := 0 to ACore - 1 do begin ALong := 0; for j := 0 to 2 do begin ALong := ALong shl 8 + S^; inc(S); end; for j := 0 to 3 do begin Result[i * 4 + 4 - j] := cBase64Char[ALong and $3F]; ALong := ALong shr 6; end; end; // For comformity to Base64, we must pad the data instead of zero out // if the size is not an exact multiple of 3 case ACore * 3 - Count of 0:;// nothing to do 1: // pad one byte Result[ACore * 4] := cBase64PadChar; 2: // pad two bytes begin Result[ACore * 4 ] := cBase64PadChar; Result[ACore * 4 - 1] := cBase64PadChar; end; end;//case end; function EncodeBase64(const Source: RawByteString): UTF8String; // Encode binary data in Source as BASE64. The function returns the BASE64 encoded // data as string, without any linebreaks. begin if length(Source) > 0 then Result := EncodeBase64Buf(Source[1], length(Source)) else Result := ''; end; procedure DecodeBase64Buf(var Source: UTF8String; var Buffer; Count: Integer); var i, j: integer; BufPos, Core: integer; LongVal: cardinal; D: PByte; Map: array[AnsiChar] of byte; begin // Core * 4 is the number of chars to read - check length Core := Length(Source) div 4; if Count > Core * 3 then raise EFilerError.Create(sxeMissingDataInBinaryStream); // Prepare map for i := 0 to 63 do Map[cBase64Char[i]] := i; D := @Buffer; // Check for final padding, and replace with "zeros". There can be // at max two pad chars ('=') BufPos := length(Source); if (BufPos > 0) and (Source[BufPos] = cBase64PadChar) then begin Source[BufPos] := cBase64Char[0]; dec(BufPos); if (BufPos > 0) and (Source[BufPos] = cBase64PadChar) then Source[BufPos] := cBase64Char[0]; end; // Do this Core times for i := 0 to Core - 1 do begin LongVal := 0; // Unroll the characters for j := 0 to 3 do LongVal := LongVal shl 6 + Map[Source[i * 4 + j + 1]]; // and unroll the bytes for j := 2 downto 0 do begin // Check overshoot if integer(D) - integer(@Buffer) >= Count then exit; D^ := LongVal shr (j * 8) and $FF; inc(D); end; end; end; function DecodeBase64(const Source: UTF8String): RawByteString; // Decode BASE64 data in Source into binary data. The function returns the binary // data as UTF8String. Use a TStringStream to convert this data to a stream. var BufData: UTF8String; BufSize, BufPos: integer; begin BufData := sdRemoveControlChars(Source); // Determine length of data BufSize := length(BufData) div 4; if BufSize * 4 <> length(BufData) then raise EFilerError.Create(sxeErrorCalcStreamLength); BufSize := BufSize * 3; // Check padding AnsiChars BufPos := length(BufData); if (BufPos > 0) and (BufData[BufPos] = cBase64PadChar) then begin dec(BufPos); dec(BufSize); if (BufPos > 0) and (BufData[BufPos] = cBase64PadChar) then dec(BufSize); end; Setlength(Result, BufSize); // Decode if BufSize > 0 then DecodeBase64Buf(BufData, Result[1], BufSize); end; {$ENDIF} function sdAnsiToUtf8(const S: AnsiString): UTF8String; begin // We let the OS figure out Ansi<->Unicode Result := sdUnicodeToUtf8(UnicodeString(S)); end; function sdUtf8ToAnsi(const S: UTF8String): AnsiString; begin // We let the OS figure out Ansi<->Unicode. There might be dataloss! Result := Ansistring(sdUtf8ToUnicode(S)); end; function EncodeBinHexBuf(const Source; Count: Integer): UTF8String; // Encode binary data in Source as BINHEX. The function returns the BINHEX encoded // data as UTF8String, without any linebreaks. var {$IFDEF CLR} Text: TBytes; {$ELSE} Text: UTF8String; {$ENDIF} begin SetLength(Text, Count * 2); {$IFDEF CLR} BinToHex(TBytes(Source), 0, Text, 0, Count); {$ELSE} BinToHex(PAnsiChar(@Source), PAnsiChar(Text), Count); {$ENDIF} Result := Text; end; function EncodeBinHex(const Source: RawByteString): UTF8String; // Encode binary data in Source as BINHEX. The function returns the BINHEX encoded // data as UTF8String, without any linebreaks. var {$IFDEF CLR} Text: TBytes; {$ELSE} Text: UTF8String; {$ENDIF} begin SetLength(Text, Length(Source) * 2); {$IFDEF CLR} BinToHex(BytesOf(Source), 0, Text, 0, Length(Source)); {$ELSE} BinToHex(PAnsiChar(Source), PAnsiChar(Text), Length(Source)); {$ENDIF} Result := Text; end; procedure DecodeBinHexBuf(const Source: UTF8String; var Buffer{$IFDEF CLR}: TBytes{$ENDIF}; Count: Integer); // Decode BINHEX data in Source into binary data. begin if Length(Source) div 2 < Count then raise EFilerError.Create(sxeMissingDataInBinaryStream); {$IFDEF CLR} HexToBin(BytesOf(Source), 0, Buffer, 0, Count); {$ELSE} HexToBin(PAnsiChar(Source), PAnsiChar(@Buffer), Count); {$ENDIF} end; function DecodeBinHex(const Source: UTF8String): RawByteString; // Decode BINHEX data in Source into binary data. The function returns the binary // data as RawByteString. Use a TStringStream to convert this data to a stream. var Data: Utf8String; Size: integer; {$IFDEF CLR} Buffer: TBytes; {$ELSE} Buffer: RawByteString; {$ENDIF} begin Data := sdRemoveControlChars(Source); // Determine length of data Size := length(Data) div 2; if Size * 2 <> length(Data) then raise EFilerError.Create(sxeErrorCalcStreamLength); SetLength(Buffer, Size); {$IFDEF CLR} HexToBin(BytesOf(Data), 0, Buffer, 0, Size); {$ELSE} HexToBin(PAnsiChar(Data), PAnsiChar(Buffer), Size); {$ENDIF} Result := Buffer; end; function sdStringToBool(const AValue: UTF8String): boolean; var Ch: AnsiChar; begin if Length(AValue) > 0 then begin Ch := sdUpCase(AValue[1]); if Ch in ['T', 'Y', '1'] then begin Result := True; exit; end; if Ch in ['F', 'N', '0'] then begin Result := False; exit; end; end; raise Exception.Create(sxeCannotConverToBool); end; function sdStringFromBool(ABool: boolean): UTF8String; const cBoolValues: array[boolean] of UTF8String = ('false', 'true'); begin Result := cBoolValues[ABool]; end; { TsdUTF8StringList } function TsdUTF8StringList.Add(const S: UTF8String): integer; var L: integer; begin L := Length(FItems); if L = FCount then begin // Increase capacity SetLength(FItems, FCount + 4); end; FItems[FCount] := S; Result := FCount; inc(FCount); end; procedure TsdUTF8StringList.Assign(Source: TPersistent); var i: integer; SL: TsdUTF8StringList; begin if Source is TsdUTF8StringList then begin SL := TsdUTF8StringList(Source); SetLength(FItems, SL.FCount); for i := 0 to SL.FCount - 1 do FItems[i] := SL.FItems[i]; FCount := SL.FCount; end else inherited; end; procedure TsdUTF8StringList.Clear; begin FCount := 0; end; procedure TsdUTF8StringList.Delete(Index: Integer); var i: integer; begin if (Index < 0) or (Index >= Count) then exit; for i := Index + 1 to Count - 1 do FItems[i - 1] := FItems[i]; dec(FCount); end; function TsdUTF8StringList.GetItems(Index: integer): UTF8String; begin if (Index >= 0) and (Index < Count) then Result := FItems[Index] else Result := ''; end; function TsdUTF8StringList.GetNames(Index: integer): UTF8String; var P: integer; begin Result := Items[Index]; P := UTF8Pos('=', Result); if P <> 0 then SetLength(Result, P - 1) else SetLength(Result, 0); end; function TsdUTF8StringList.GetText: UTF8String; const cLB: UTF8String = #13#10; var i, L, LItem: integer; P: PAnsiChar; begin L := 0; for i := 0 to Count - 1 do begin inc(L, length(FItems[i])); inc(L, 2); end; SetLength(Result, L); if L = 0 then exit; P := @Result[1]; for i := 0 to Count - 1 do begin LItem := length(FItems[i]); if LItem > 0 then begin System.Move(FItems[i][1], P^, LItem); inc(P, LItem); end; System.Move(cLB[1], P^, 2); inc(P, 2); end; end; function TsdUTF8StringList.GetValues(const Name: UTF8String): UTF8String; var Idx: integer; begin Idx := IndexOfName(Name); if Idx >= 0 then Result := Copy(FItems[Idx], Length(Name) + 2, MaxInt) else Result := ''; end; function TsdUTF8StringList.IndexOfName(const Name: UTF8String): integer; begin for Result := 0 to Count - 1 do begin if sdUTF8MatchString(Name + '=', FItems[Result], 1) then exit; end; Result := -1; end; procedure TsdUTF8StringList.SetItems(Index: integer; const Value: UTF8String); begin if (Index >= 0) and (Index < Count) then FItems[Index] := Value; end; procedure TsdUTF8StringList.SetValues(const Name, Value: UTF8String); var Idx: integer; begin Idx := IndexOfName(Name); if Value <> '' then begin if Idx < 0 then Idx := Add(''); FItems[Idx] := Name + '=' + Value; end else Delete(Idx); end; { TXmlNode } function TXmlNode.AbortParsing: boolean; begin Result := assigned(Document) and Document.AbortParsing; end; procedure TXmlNode.Assign(Source: TPersistent); var i: integer; Node: TXmlNode; begin if Source is TXmlNode then begin // Clear first Clear; // Properties FElementType := TXmlNode(Source).FElementType; FName := TXmlNode(Source).FName; FTag := TXmlNode(Source).FTag; FValue := TXmlNode(Source).FValue; // Attributes if assigned(TXmlNode(Source).FAttributes) then begin CheckCreateAttributesList; FAttributes.Assign(TXmlNode(Source).FAttributes); end; // Nodes for i := 0 to TXmlNode(Source).NodeCount - 1 do begin Node := NodeNew(''); Node.Assign(TXmlNode(Source).Nodes[i]); end; end else if Source is TNativeXml then begin Assign(TNativeXml(Source).FRootNodes); end else inherited; end; procedure TXmlNode.AttributeAdd(const AName, AValue: UTF8String); var Attr: UTF8String; begin Attr := UTF8String(Format('%s=%s', [AName, sdUTF8QuotedString(sdUTF8EscapeString(AValue))])); CheckCreateAttributesList; FAttributes.Add(Attr); end; procedure TXmlNode.AttributeAdd(const AName: UTF8String; AValue: integer); begin AttributeAdd(AName, IntToUTF8Str(AValue)); end; procedure TXmlNode.AttributeDelete(Index: integer); begin if (Index >= 0) and (Index < AttributeCount) then FAttributes.Delete(Index); end; procedure TXmlNode.AttributeExchange(Index1, Index2: integer); var Temp: UTF8String; begin if (Index1 <> Index2) and (Index1 >= 0) and (Index1 < FAttributes.Count) and (Index2 >= 0) and (Index2 < FAttributes.Count) then begin Temp := FAttributes[Index1]; FAttributes[Index1] := FAttributes[Index2]; FAttributes[Index2] := Temp; end; end; function TXmlNode.AttributeIndexByname(const AName: UTF8String): integer; // Return the index of the attribute with name AName, or -1 if not found begin if assigned(FAttributes) then Result := FAttributes.IndexOfName(AName) else Result := -1; end; procedure TXmlNode.AttributesClear; begin FreeAndNil(FAttributes); end; function TXmlNode.BufferLength: integer; var BufData: UTF8String; BufPos: integer; begin BufData := sdRemoveControlChars(FValue); case BinaryEncoding of xbeBinHex: begin Result := length(BufData) div 2; if Result * 2 <> length(BufData) then raise EFilerError.Create(sxeErrorCalcStreamLength); end; xbeBase64: begin Result := length(BufData) div 4; if Result * 4 <> length(BufData) then raise EFilerError.Create(sxeErrorCalcStreamLength); Result := Result * 3; // Check padding AnsiChars BufPos := length(BufData); if (BufPos > 0) and (BufData[BufPos] = cBase64PadChar) then begin dec(BufPos); dec(Result); if (BufPos > 0) and (BufData[BufPos] = cBase64PadChar) then dec(Result); end; end; else Result := 0; // avoid compiler warning end; end; procedure TXmlNode.BufferRead(var Buffer{$IFDEF CLR}: TBytes{$ENDIF}; Count: Integer); // Read data from XML binhex to the buffer var BufData: UTF8String; begin BufData := sdRemoveControlChars(FValue); case BinaryEncoding of xbeBinHex: DecodeBinHexBuf(BufData, Buffer, Count); xbeBase64: DecodeBase64Buf(BufData, Buffer, Count); end; end; procedure TXmlNode.BufferWrite(const Buffer{$IFDEF CLR}: TBytes{$ENDIF}; Count: Integer); // Write data from the buffer to XML in binhex or base64 format var BufData: UTF8String; begin if Count > 0 then case BinaryEncoding of xbeBinHex: BufData := EncodeBinHexBuf(Buffer, Count); xbeBase64: BufData := EncodeBase64Buf(Buffer, Count); end; // For comformity with Base64, we must add linebreaks each 76 AnsiCharacters FValue := sdAddControlChars(BufData, GetLineFeed + GetIndent, 76); end; procedure TXmlNode.ChangeDocument(ADocument: TNativeXml); var i: integer; begin FDocument := ADocument; for i := 0 to NodeCount - 1 do Nodes[i].ChangeDocument(ADocument); end; procedure TXmlNode.CheckCreateAttributesList; begin if not assigned(FAttributes) then FAttributes := TsdUTF8StringList.Create; end; procedure TXmlNode.Clear; begin // Name + value FName := ''; FValue := ''; // Clear attributes and nodes AttributesClear; NodesClear; end; function TXmlNode.CompareNodeName(const NodeName: UTF8String): integer; begin // Compare with FullPath or local name based on NodeName's first AnsiCharacter if length(NodeName) > 0 then if NodeName[1] = '/' then begin // FullPath Result := UTF8CompareText(FullPath, NodeName); exit; end; // local name Result := UTF8CompareText(Name, NodeName); end; constructor TXmlNode.Create(ADocument: TNativeXml); begin inherited Create; FDocument := ADocument; end; constructor TXmlNode.CreateName(ADocument: TNativeXml; const AName: UTF8String); begin Create(ADocument); Name := AName; end; constructor TXmlNode.CreateNameValue(ADocument: TNativeXml; const AName, AValue: UTF8String); begin Create(ADocument); Name := AName; ValueAsString := AValue; end; constructor TXmlNode.CreateType(ADocument: TNativeXml; AType: TXmlElementType); begin Create(ADocument); FElementType := AType; end; procedure TXmlNode.Delete; begin if assigned(Parent) then Parent.NodeRemove(Self); end; procedure TXmlNode.DeleteEmptyAttributes; var i: integer; V: UTF8String; begin for i := AttributeCount - 1 downto 0 do begin V := AttributeValue[i]; if length(V) = 0 then FAttributes.Delete(i); end; end; procedure TXmlNode.DeleteEmptyNodes; var i: integer; Node: TXmlNode; begin for i := NodeCount - 1 downto 0 do begin Node := Nodes[i]; // Recursive call Node.DeleteEmptyNodes; // Check if we should delete child node if Node.IsEmpty then NodeDelete(i); end; end; destructor TXmlNode.Destroy; begin NodesClear; AttributesClear; inherited; end; function TXmlNode.FindNode(const NodeName: UTF8String): TXmlNode; // Find the first node which has name NodeName. Contrary to the NodeByName // function, this function will search the whole subnode tree, using the // DepthFirst method. var i: integer; begin Result := nil; // Loop through all subnodes for i := 0 to NodeCount - 1 do begin Result := Nodes[i]; // If the subnode has name NodeName then we have a result, exit if Result.CompareNodeName(NodeName) = 0 then exit; // If not, we will search the subtree of this node Result := Result.FindNode(NodeName); if assigned(Result) then exit; end; end; procedure TXmlNode.FindNodes(const NodeName: UTF8String; const AList: TList); // local procedure FindNodesRecursive(ANode: TXmlNode; AList: TList); var i: integer; begin with ANode do for i := 0 to NodeCount - 1 do begin if Nodes[i].CompareNodeName(NodeName) = 0 then AList.Add(Nodes[i]); FindNodesRecursive(Nodes[i], AList); end; end; // main begin AList.Clear; FindNodesRecursive(Self, AList); end; function TXmlNode.FloatAllowScientific: boolean; begin if assigned(Document) then Result := Document.FloatAllowScientific else Result := cDefaultFloatAllowScientific; end; function TXmlNode.FloatSignificantDigits: integer; begin if assigned(Document) then Result := Document.FloatSignificantDigits else Result := cDefaultFloatSignificantDigits; end; function TXmlNode.FromAnsiString(const s: AnsiString): UTF8String; begin Result := sdAnsiToUtf8(s) end; function TXmlNode.FromUnicodeString(const W: UnicodeString): UTF8String; begin Result := sdUnicodeToUtf8(W) end; function TXmlNode.GetAttributeByName(const AName: UTF8String): UTF8String; begin if assigned(FAttributes) then Result := sdUTF8UnEscapeString(sdUTF8UnQuotedString(FAttributes.Values[AName])) else Result := ''; end; function TXmlNode.GetAttributeByNameWide(const AName: UTF8String): UnicodeString; begin Result := ToUnicodeString(GetAttributeByName(AName)); end; function TXmlNode.GetAttributeCount: integer; begin if assigned(FAttributes) then Result := FAttributes.Count else Result := 0; end; function TXmlNode.GetAttributeName(Index: integer): UTF8String; begin if (Index >= 0) and (Index < AttributeCount) then Result := FAttributes.Names[Index]; end; function TXmlNode.GetAttributePair(Index: integer): UTF8String; begin if (Index >= 0) and (Index < AttributeCount) then Result := FAttributes[Index]; end; function TXmlNode.GetAttributeValue(Index: integer): UTF8String; var P: integer; S: UTF8String; begin Result := ''; if (Index >= 0) and (Index < AttributeCount) then begin S := FAttributes[Index]; P := Utf8Pos('=', S); if P > 0 then Result := sdUTF8UnEscapeString(sdUTF8UnQuotedString(Copy(S, P + 1, MaxInt))); end; end; function TXmlNode.GetAttributeValueAsInteger(Index: integer): integer; begin Result := StrToIntDef(string(GetAttributeValue(Index)), 0); end; function TXmlNode.GetAttributeValueAsUnicodeString(Index: integer): UnicodeString; begin Result := ToUnicodeString(GetAttributeValue(Index)); end; function TXmlNode.GetAttributeValueDirect(Index: integer): UTF8String; var P: integer; S: UTF8String; begin Result := ''; if (Index >= 0) and (Index < AttributeCount) then begin S := FAttributes[Index]; P := Utf8Pos('=', S); if P > 0 then Result := sdUTF8UnQuotedString(Copy(S, P + 1, MaxInt)); end; end; function TXmlNode.GetBinaryEncoding: TBinaryEncodingType; begin Result := xbeBinHex; if assigned(Document) then Result := Document.BinaryEncoding; end; function TXmlNode.GetBinaryString: RawByteString; // Get the binary contents of this node as Base64 and return it as a RawByteString var OldEncoding: TBinaryEncodingType; {$IFDEF CLR} Buffer: TBytes; {$ENDIF} begin // Set to base64 OldEncoding := BinaryEncoding; try BinaryEncoding := xbeBase64; {$IFDEF CLR} SetLength(Buffer, BufferLength); if length(Buffer) > 0 then BufferRead(Buffer, length(Buffer)); Result := Buffer; {$ELSE} SetLength(Result, BufferLength); if length(Result) > 0 then BufferRead(Result[1], length(Result)); {$ENDIF} finally BinaryEncoding := OldEncoding; end; end; function TXmlNode.GetCascadedName: UTF8String; // Return the name+index and all predecessors with underscores to separate, in // order to get a unique reference that can be used in filenames var LName: UTF8String; begin LName := UTF8String(Format('%s%.4d', [Name, StrToIntDef(string(AttributeByName['Index']), 0)])); if assigned(Parent) then Result := UTF8String(Format('%s_%s', [Parent.CascadedName, LName])) else Result := LName; end; function TXmlNode.GetFullPath: UTF8String; // GetFullpath will return the complete path of the node from the root, e.g. // /Root/SubNode1/SubNode2/ThisNode begin Result := '/' + Name; if Treedepth > 0 then // Recursive call Result := Parent.GetFullPath + Result; end; function TXmlNode.GetIndent: UTF8String; var i: integer; begin if assigned(Document) then begin case Document.XmlFormat of xfCompact: Result := ''; xfReadable: for i := 0 to TreeDepth - 1 do Result := Result + Document.IndentString; end; //case end else Result := '' end; function TXmlNode.GetLineFeed: UTF8String; begin if assigned(Document) then begin case Document.XmlFormat of xfCompact: Result := ''; xfReadable: Result := #13#10; else Result := #10; end; //case end else Result := ''; end; function TXmlNode.GetNodeCount: integer; begin if Assigned(FNodes) then Result := FNodes.Count else Result := 0; end; function TXmlNode.GetNodes(Index: integer): TXmlNode; begin if (Index >= 0) and (Index < NodeCount) then Result := TXmlNode(FNodes[Index]) else Result := nil; end; function TXmlNode.GetTotalNodeCount: integer; var i: integer; begin Result := NodeCount; for i := 0 to NodeCount - 1 do inc(Result, Nodes[i].TotalNodeCount); end; function TXmlNode.GetTreeDepth: integer; begin Result := -1; if assigned(Parent) then Result := Parent.TreeDepth + 1; end; function TXmlNode.GetValueAsBool: boolean; begin Result := sdStringToBool(FValue); end; function TXmlNode.GetValueAsDateTime: TDateTime; begin Result := sdDateTimeFromString(ValueAsString, UseLocalBias); end; function TXmlNode.GetValueAsFloat: double; var Code: integer; begin val(string(sdUTF8StringReplace(FValue, ',', '.')), Result, Code); if Code > 0 then raise Exception.Create(sxeCannotConvertToFloat); end; function TXmlNode.GetValueAsInt64: int64; begin Result := StrToInt64(string(FValue)); end; function TXmlNode.GetValueAsInteger: integer; begin Result := StrToInt(string(FValue)); end; function TXmlNode.GetValueAsString: UTF8String; begin if FElementType = xeNormal then Result := UnEscapeString(sdUTF8Trim(FValue)) else Result := UnEscapeString(FValue); end; function TXmlNode.GetValueAsUnicodeString: UnicodeString; begin Result := ToUnicodeString(ValueAsString); end; function TXmlNode.GetWriteOnDefault: boolean; begin Result := True; if assigned(Document) then Result := Document.WriteOnDefault; end; function TXmlNode.HasAttribute(const AName: UTF8String): boolean; begin if assigned(FAttributes) then Result := FAttributes.IndexOfName(AName) >= 0 else Result := False; end; function TXmlNode.IndexInParent: integer; // Retrieve our index in the parent's nodelist begin Result := -1; if assigned(Parent) then Result := Parent.FNodes.IndexOf(Self); end; function TXmlNode.IsClear: boolean; begin Result := (Length(FName) = 0) and IsEmpty; end; function TXmlNode.IsEmpty: boolean; begin Result := (Length(FValue) = 0) and (NodeCount = 0) and (AttributeCount = 0); end; function TXmlNode.IsEqualTo(ANode: TXmlNode; Options: TXmlCompareOptions; MismatchNodes: TList): boolean; var i, Index: integer; NodeResult, ChildResult: boolean; begin // Start with a negative result Result := False; NodeResult := False; if not assigned(ANode) then exit; // Assume childs equals other node's childs ChildResult := True; // child node names and values - this comes first to assure the lists are filled if (xcChildNames in Options) or (xcChildValues in Options) or (xcRecursive in Options) then for i := 0 to NodeCount - 1 do begin // Do child name check Index := ANode.NodeIndexByName(Nodes[i].Name); // Do we have the childnode in the other? if Index < 0 then begin // No we dont have it if xcChildNames in Options then begin if assigned(MismatchNodes) then MismatchNodes.Add(Nodes[i]); ChildResult := False; end; end else begin // Do child value check if xcChildValues in Options then if UTF8CompareText(Nodes[i].ValueAsString, ANode.Nodes[Index].ValueAsString) <> 0 then begin if assigned(MismatchNodes) then MismatchNodes.Add(Nodes[i]); ChildResult := False; end; // Do recursive check if xcRecursive in Options then if not Nodes[i].IsEqualTo(ANode.Nodes[Index], Options, MismatchNodes) then ChildResult := False; end; end; try // We assume there are differences NodeResult := False; // Node name, type and value if xcNodeName in Options then if UTF8CompareText(Name, ANode.Name) <> 0 then exit; if xcNodeType in Options then if ElementType <> ANode.ElementType then exit; if xcNodeValue in Options then if UTF8CompareText(ValueAsString, ANode.ValueAsString) <> 0 then exit; // attribute count if xcAttribCount in Options then if AttributeCount <> ANode.AttributeCount then exit; // attribute names and values if (xcAttribNames in Options) or (xcAttribValues in Options) then for i := 0 to AttributeCount - 1 do begin Index := ANode.AttributeIndexByName(AttributeName[i]); if Index < 0 then if xcAttribNames in Options then exit else continue; if xcAttribValues in Options then if UTF8CompareText(AttributeValue[i], ANode.AttributeValue[Index]) <> 0 then exit; end; // child node count if xcChildCount in Options then if NodeCount <> ANode.NodeCount then exit; // If we arrive here, it means no differences were found, return True NodeResult := True; finally Result := ChildResult and NodeResult; if (not NodeResult) and assigned(MismatchNodes) then MismatchNodes.Insert(0, Self); end; end; function TXmlNode.NodeAdd(ANode: TXmlNode): integer; begin if assigned(ANode) then begin ANode.Parent := Self; ANode.ChangeDocument(Document); if not assigned(FNodes) then FNodes := TList.Create; Result := FNodes.Add(ANode); end else Result := -1; end; function TXmlNode.NodeByAttributeValue(const NodeName, AttribName, AttribValue: UTF8String; ShouldRecurse: boolean): TXmlNode; // This function returns a pointer to the first subnode that has an attribute with // name AttribName and value AttribValue. var i: integer; Node: TXmlNode; begin Result := nil; // Find all nodes that are potential results for i := 0 to NodeCount - 1 do begin Node := Nodes[i]; if (UTF8CompareText(Node.Name, NodeName) = 0) and Node.HasAttribute(AttribName) and (UTF8CompareText(Node.AttributeByName[AttribName], AttribValue) = 0) then begin Result := Node; exit; end; // Recursive call if ShouldRecurse then Result := Node.NodeByAttributeValue(NodeName, AttribName, AttribValue, True); if assigned(Result) then exit; end; end; function TXmlNode.NodeByElementType(ElementType: TXmlElementType): TXmlNode; var i: integer; begin Result := nil; for i := 0 to NodeCount - 1 do if Nodes[i].ElementType = ElementType then begin Result := Nodes[i]; exit; end; end; function TXmlNode.NodeByName(const AName: UTF8String): TXmlNode; var i: integer; begin Result := nil; for i := 0 to NodeCount - 1 do if UTF8CompareText(Nodes[i].Name, AName) = 0 then begin Result := Nodes[i]; exit; end; end; procedure TXmlNode.NodeDelete(Index: integer); begin if (Index >= 0) and (Index < NodeCount) then begin TXmlNode(FNodes[Index]).Free; FNodes.Delete(Index); end; end; procedure TXmlNode.NodeExchange(Index1, Index2: integer); begin if (Index1 >= 0) and (Index1 < Nodecount) and (Index2 >= 0) and (Index2 < Nodecount) then FNodes.Exchange(Index1, Index2); end; function TXmlNode.NodeExtract(ANode: TXmlNode): TXmlNode; var Index: integer; begin // Compatibility with Delphi4 Result := nil; if assigned(FNodes) then begin Index := FNodes.IndexOf(ANode); if Index >= 0 then begin Result := ANode; FNodes.Delete(Index); end; end; end; function TXmlNode.NodeFindOrCreate(const AName: UTF8String): TXmlNode; // Find the node with AName, and if not found, add new one begin Result := NodeByName(AName); if not assigned(Result) then Result := NodeNew(AName); end; function TXmlNode.NodeIndexByName(const AName: UTF8String): integer; begin Result := 0; while Result < NodeCount do begin if UTF8CompareText(Nodes[Result].Name, AName) = 0 then exit; inc(Result); end; if Result = NodeCount then Result := -1; end; function TXmlNode.NodeIndexByNameFrom(const AName: UTF8String; AFrom: integer): integer; begin Result := AFrom; while Result < NodeCount do begin if UTF8CompareText(Nodes[Result].Name, AName) = 0 then exit; inc(Result); end; if Result = NodeCount then Result := -1; end; function TXmlNode.NodeIndexOf(ANode: TXmlNode): integer; begin if assigned(ANode) and assigned(FNodes) then Result := FNodes.IndexOf(ANode) else Result := -1; end; procedure TXmlNode.NodeInsert(Index: integer; ANode: TXmlNode); // Insert the node ANode at location Index in the list. begin if not assigned(ANode) then exit; if (Index >=0) and (Index <= NodeCount) then begin if not assigned(FNodes) then FNodes := TList.Create; ANode.Parent := Self; FNodes.Insert(Index, ANode); end; end; function TXmlNode.NodeNew(const AName: UTF8String): TXmlNode; // Add a new child node and return its pointer begin Result := Nodes[NodeAdd(TXmlNode.CreateName(Document, AName))]; end; function TXmlNode.NodeNewAtIndex(Index: integer; const AName: UTF8String): TXmlNode; // Create a new node with AName, and insert it into the subnode list at location // Index, and return a pointer to it. begin if (Index >= 0) and (Index <= NodeCount) then begin Result := TXmlNode.CreateName(Document, AName); NodeInsert(Index, Result); end else Result := nil; end; function TXmlNode.NodeRemove(ANode: TxmlNode): integer; begin Result := NodeIndexOf(ANode); if Result >= 0 then NodeDelete(Result); end; procedure TXmlNode.NodesByName(const AName: UTF8String; const AList: TList); // Fill AList with nodes that have name AName var i: integer; begin if not assigned(AList) then exit; AList.Clear; for i := 0 to NodeCount - 1 do if UTF8CompareText(Nodes[i].Name, AName) = 0 then AList.Add(Nodes[i]); end; procedure TXmlNode.NodesClear; var i: integer; begin for i := 0 to NodeCount - 1 do TXmlNode(FNodes[i]).Free; FreeAndNil(FNodes); end; procedure TXmlNode.ParseTag(const AValue: UTF8String; TagStart, TagClose: integer); var LItems: TsdUTF8StringList; begin // Create a list to hold string items LItems := TsdUTF8StringList.Create; try sdUTF8ParseAttributes(AValue, TagStart, TagClose, LItems); // Determine name, attributes or value for each element type case ElementType of xeDeclaration: FName := 'xml'; xeStyleSheet: begin FName := 'xml-stylesheet'; // We also set this as the value for use in "StyleSheetString" ValueDirect := sdUTF8Trim(copy(AValue, TagStart, TagClose - TagStart)); end; else // First item is the name - is it there? if LItems.Count = 0 then raise EFilerError.Create(sxeMissingElementName); // Set the name - using the element instead of property for speed FName := LItems[0]; LItems.Delete(0); end;//case // Any attributes? if LItems.Count > 0 then begin CheckCreateAttributesList; FAttributes.Assign(LItems); end; finally LItems.Free; end; end; function TXmlNode.QualifyAsDirectNode: boolean; // If this node qualifies as a direct node when writing, we return True. // A direct node may have attributes, but no value or subnodes. Furhtermore, // the root node will never be displayed as a direct node. begin Result := (Length(FValue) = 0) and (NodeCount = 0) and (ElementType = xeNormal) and not UseFullNodes and (TreeDepth > 0); end; function TXmlNode.ReadAttributeBool(const AName: UTF8String; ADefault: boolean): boolean; var V: UTF8String; begin Result := ADefault; V := AttributeByName[AName]; if Length(V) = 0 then exit; try Result := sdStringToBool(V); except Result := ADefault; end; end; function TXmlNode.ReadAttributeDateTime(const AName: UTF8String; ADefault: TDateTime): TDateTime; var V: UTF8String; begin Result := ADefault; V := AttributeByName[AName]; if Length(V) = 0 then exit; try Result := sdDateTimeFromStringDefault(V, ADefault, UseLocalBias); except Result := ADefault; end; end; function TXmlNode.ReadAttributeFloat(const AName: UTF8String; ADefault: double): double; var V: UTF8String; Code: integer; begin V := AttributeByName[AName]; val(string(sdUTF8StringReplace(V, ',', '.')), Result, Code); if Code > 0 then Result := ADefault; end; function TXmlNode.ReadAttributeInteger(const AName: UTF8String; ADefault: integer): integer; begin Result := StrToIntDef(string(AttributeByName[AName]), ADefault); end; function TXmlNode.ReadAttributeInt64(const AName: UTF8String; ADefault: int64): int64; begin Result := StrToInt64Def(string(AttributeByName[AName]), ADefault); end; function TXmlNode.ReadAttributeString(const AName: UTF8String; const ADefault: UTF8String): UTF8String; begin Result := AttributeByName[AName]; if length(Result) = 0 then Result := ADefault; end; function TXmlNode.ReadBool(const AName: UTF8String; ADefault: boolean): boolean; var Index: integer; begin Result := ADefault; Index := NodeIndexByName(AName); if Index >= 0 then Result := Nodes[Index].ValueAsBoolDef(ADefault); end; {$IFDEF USEGRAPHICS} procedure TXmlNode.ReadBrush(const AName: UTF8String; ABrush: TBrush); var Child: TXmlNode; begin Child := NodeByName(AName); if assigned(Child) then with Child do begin // Read values ABrush.Color := ReadColor('Color', clWhite); ABrush.Style := TBrushStyle(ReadInteger('Style', integer(bsSolid))); end else begin // Defaults ABrush.Bitmap := nil; ABrush.Color := clWhite; ABrush.Style := bsSolid; end; end; function TXmlNode.ReadColor(const AName: UTF8String; ADefault: TColor): TColor; var Index: integer; begin Result := ADefault; Index := NodeIndexByName(AName); if Index >= 0 then Result := StrToInt(string(Nodes[Index].ValueAsString)); end; {$ENDIF} function TXmlNode.ReadDateTime(const AName: UTF8String; ADefault: TDateTime): TDateTime; // Date MUST always be written in this format: // YYYY-MM-DD (if just date) or // YYYY-MM-DDThh:mm:ss.sssZ (if date and time. The Z stands for universal time // zone. Since Delphi's TDateTime does not give us a clue about the timezone, // this is the easiest solution) // This format SHOULD NOT be changed, to avoid all kinds of // conversion errors in future. // This format is compatible with the W3C date/time specification as found here: // http://www.w3.org/TR/NOTE-datetime begin Result := sdDateTimeFromStringDefault(ReadString(AName, ''), ADefault, UseLocalBias); end; function TXmlNode.ReadFloat(const AName: UTF8String; ADefault: double): double; var Index: integer; begin Result := ADefault; Index := NodeIndexByName(AName); if Index >= 0 then Result := Nodes[Index].ValueAsFloatDef(ADefault); end; {$IFDEF USEGRAPHICS} procedure TXmlNode.ReadFont(const AName: UTF8String; AFont: TFont); var Child: TXmlNode; begin Child := NodeByName(AName); AFont.Style := []; if assigned(Child) then with Child do begin // Read values AFont.Name := string(ReadString('Name', 'Arial')); AFont.Color := ReadColor('Color', clBlack); AFont.Size := ReadInteger('Size', 14); if ReadBool('Bold', False) then AFont.Style := AFont.Style + [fsBold]; if ReadBool('Italic', False) then AFont.Style := AFont.Style + [fsItalic]; if ReadBool('Underline', False) then AFont.Style := AFont.Style + [fsUnderline]; if ReadBool('Strikeout', False) then AFont.Style := AFont.Style + [fsStrikeout]; end else begin // Defaults AFont.Name := 'Arial'; AFont.Color := clBlack; AFont.Size := 14; end; end; {$ENDIF} procedure TXmlNode.ReadFromStream(S: TStream); // Read the node from the starting "<" until the closing ">" from the stream in S. // This procedure also calls OnNodeNew and OnNodeLoaded events var Ch: AnsiChar; i: integer; TagIndex: integer; V: UTF8String; Len: integer; Node: TXmlNode; NodeValue: UTF8String; ValuePos, ValueLen: integer; ClosePos: integer; HasCR: boolean; HasSubtags: boolean; Words: TsdUTF8StringList; IsDirect: boolean; Reader: TsdSurplusReader; // local procedure AddCharDataNode(PreserveWhiteSpace: boolean); var V: UTF8String; Node: TXmlNode; L: integer; begin // Add all text up till now as xeCharData if ValuePos > 0 then begin V := copy(NodeValue, 1, ValuePos); if PreserveWhiteSpace then L := length(V) else L := length(sdUTF8Trim(V)); if L > 0 then begin Node := TXmlNode.CreateType(Document, xeCharData); Node.ValueDirect := V; NodeAdd(Node); end; ValuePos := 0; end; end; // Main begin // Check if we aborted parsing if AbortParsing then exit; // Clear this node first Clear; // Initial reserve textual value: just 80 AnsiCharacters which is OK for most short values ValuePos := 0; ValueLen := 80; SetLength(NodeValue, ValueLen); HasCR := False; HasSubTags := False; Reader := TsdSurplusReader.Create(S); try // Trailing blanks/controls AnsiChars? if not Reader.ReadCharSkipBlanks(Ch) then exit; // What is it? if Ch = '<' then begin // A tag - which one? TagIndex := ReadOpenTag(Reader); if TagIndex >= 0 then begin try ElementType := cTags[TagIndex].Style; case ElementType of xeNormal, xeDeclaration, xeStyleSheet: begin // These tags we will process ReadStringFromStreamUntil(Reader, cTags[TagIndex].Close, V, True); Len := length(V); // Is it a direct tag? IsDirect := False; if (ElementType = xeNormal) and (Len > 0) then if V[Len] = '/' then begin dec(Len); IsDirect := True; end; ParseTag(V, 1, Len + 1); // Here we know our name so good place to call OnNodeNew event if assigned(Document) then begin Document.DoNodeNew(Self); if AbortParsing then exit; end; // Now the tag can be a direct close - in that case we're finished if IsDirect or (ElementType in [xeDeclaration, xeStyleSheet]) then exit; // Process rest of tag repeat // Read AnsiCharacter from stream if S.Read(Ch, 1) <> 1 then raise EFilerError.CreateFmt(sxeMissingCloseTag, [Name]); // Is there a subtag? if Ch = '<' then begin if not Reader.ReadCharSkipBlanks(Ch) then raise EFilerError.CreateFmt(sxeMissingDataAfterGreaterThan, [Name]); if Ch = '/' then begin // This seems our closing tag if not ReadStringFromStreamUntil(Reader, '>', V, True) then raise EFilerError.CreateFmt(sxeMissingLessThanInCloseTag, [Name]); if UTF8CompareText(sdUTF8Trim(V), Name) <> 0 then raise EFilerError.CreateFmt(sxeIncorrectCloseTag, [Name]); V := ''; break; end else begin // Add all text up till now as xeCharData AddCharDataNode(False); // Reset the HasCR flag if we add node, we only want to detect // the CR after last subnode HasCR := False; // This is a subtag... so create it and let it process HasSubTags := True; S.Seek(-2, soCurrent); Node := TXmlNode.Create(Document); NodeAdd(Node); Node.ReadFromStream(S); // Check for dropping comments if assigned(Document) and Document.DropCommentsOnParse and (Node.ElementType = xeComment) then NodeDelete(NodeIndexOf(Node)); end; end else begin // If we detect a CR we will set the flag. This will signal the fact // that this XML file was saved with xfReadable if Ch = #13 then HasCR := True; // Add the AnsiCharacter to the node value buffer. inc(ValuePos); if ValuePos > ValueLen then begin inc(ValueLen, cNodeValueBuf); SetLength(NodeValue, ValueLen); end; NodeValue[ValuePos] := Ch; end; until False or AbortParsing; // Add all text up till now as xeText AddCharDataNode(not HasSubtags); // Check AnsiCharData nodes, remove trailing CRLF + indentation if we // were in xfReadable mode if HasSubtags and HasCR then begin for i := 0 to NodeCount - 1 do if Nodes[i].ElementType = xeCharData then begin ClosePos := length(Nodes[i].FValue); while (ClosePos > 0) and (Nodes[i].FValue[ClosePos] in [#10, #13, ' ']) do dec(ClosePos); Nodes[i].FValue := copy(Nodes[i].FValue, 1, ClosePos); end; end; // If the first node is xeCharData we use it as ValueDirect if NodeCount > 0 then if Nodes[0].ElementType = xeCharData then begin ValueDirect := Nodes[0].ValueDirect; NodeDelete(0); end; end; xeDocType: begin Name := 'DTD'; if assigned(Document) then begin Document.DoNodeNew(Self); if AbortParsing then exit; end; // Parse DTD if assigned(Document) then Document.ParseDTD(Self, S); end; xeElement, xeAttList, xeEntity, xeNotation: begin // DTD elements ReadStringFromStreamWithQuotes(S, cTags[TagIndex].Close, V); Len := length(V); Words := TsdUTF8StringList.Create; try sdUTF8ParseAttributes(V, 1, Len + 1, Words); if Words.Count > 0 then begin Name := Words[0]; Words.Delete(0); end; ValueDirect := sdUTF8Trim(Words.Text); finally Words.Free; end; if assigned(Document) then begin Document.DoNodeNew(Self); if AbortParsing then exit; end; end; else case ElementType of xeComment: Name := 'Comment'; xeCData: Name := 'CData'; xeExclam: Name := 'Special'; xeQuestion: Name := 'Special'; else Name := 'Unknown'; end; //case // Here we know our name so good place to call OnNodeNew if assigned(Document) then begin Document.DoNodeNew(Self); if AbortParsing then exit; end; // In these cases just get all data up till the closing tag ReadStringFromStreamUntil(Reader, cTags[TagIndex].Close, V, False); ValueDirect := V; end;//case finally // Call the OnNodeLoaded and OnProgress events if assigned(Document) and not AbortParsing then begin Document.DoProgress(S.Position); Document.DoNodeLoaded(Self); end; end; end; end else if True then begin raise EFilerError.CreateFmt(sxeErrorUnexpectedChar, ['<']); end; finally Reader.Free; end; end; procedure TXmlNode.ReadFromString(const AValue: UTF8String); var S: TStream; begin S := TsdUTF8StringStream.Create(AValue); try ReadFromStream(S); finally S.Free; end; end; function TXmlNode.ReadInt64(const AName: UTF8String; ADefault: int64): int64; var Index: integer; begin Result := ADefault; Index := NodeIndexByName(AName); if Index >= 0 then Result := Nodes[Index].ValueAsInt64Def(ADefault); end; function TXmlNode.ReadInteger(const AName: UTF8String; ADefault: integer): integer; var Index: integer; begin Result := ADefault; Index := NodeIndexByName(AName); if Index >= 0 then Result := Nodes[Index].ValueAsIntegerDef(ADefault); end; {$IFDEF USEGRAPHICS} procedure TXmlNode.ReadPen(const AName: UTF8String; APen: TPen); var Child: TXmlNode; begin Child := NodeByName(AName); if assigned(Child) then with Child do begin // Read values APen.Color := ReadColor('Color', clBlack); APen.Mode := TPenMode(ReadInteger('Mode', integer(pmCopy))); APen.Style := TPenStyle(ReadInteger('Style', integer(psSolid))); APen.Width := ReadInteger('Width', 1); end else begin // Defaults APen.Color := clBlack; APen.Mode := pmCopy; APen.Style := psSolid; APen.Width := 1; end; end; {$ENDIF} function TXmlNode.ReadString(const AName: UTF8String; const ADefault: UTF8String): UTF8String; var Index: integer; begin Result := ADefault; Index := NodeIndexByName(AName); if Index >= 0 then Result := Nodes[Index].ValueAsString; end; function TXmlNode.ReadUnicodeString(const AName: UTF8String; const ADefault: UnicodeString): UnicodeString; begin Result := ToUnicodeString(ReadString(AName, FromUnicodeString(ADefault))); end; procedure TXmlNode.ResolveEntityReferences; // Replace any entity references by the entities, and parse the new content if any // local function SplitReference(const AValue: UTF8String; var Text1, Text2: UTF8String): UTF8String; var P: integer; begin Result := ''; P := UTF8Pos('&', AValue); Text1 := ''; Text2 := AValue; if P = 0 then exit; Text1 := copy(AValue, 1, P - 1); Text2 := copy(AValue, P + 1, length(AValue)); P := UTF8Pos(';', Text2); if P = 0 then exit; Result := copy(Text2, 1, P - 1); Text2 := copy(Text2, P + 1, length(Text2)); end; // local function ReplaceEntityReferenceByNodes(ARoot: TXmlNode; const AValue: UTF8String; var InsertPos: integer; var Text1, Text2: UTF8String): boolean; var Reference: UTF8String; Entity: UTF8String; Node: TXmlNode; S: TStream; begin Result := False; Reference := SplitReference(AValue, Text1, Text2); if (length(Reference) = 0) or not assigned(Document) then exit; // Lookup entity references Entity := Document.EntityByName[Reference]; // Does the entity contain markup? if (length(Entity) > 0) and (UTF8Pos('<', Entity) > 0) then begin S := TsdUTF8StringStream.Create(Entity); try while S.Position < S.Size do begin Node := TXmlNode.Create(Document); Node.ReadFromStream(S); if Node.IsEmpty then Node.Free else begin ARoot.NodeInsert(InsertPos, Node); inc(InsertPos); Result := True; end; end; finally S.Free; end; end; end; // main var i: integer; InsertPos: integer; Text1, Text2: UTF8String; Node: TXmlNode; V, Reference, Replace, Entity, First, Last: UTF8String; begin if length(FValue) > 0 then begin // Different behaviour for xeNormal and xeCharData if ElementType = xeNormal then begin InsertPos := 0; if ReplaceEntityReferenceByNodes(Self, FValue, InsertPos, Text1, Text2) then begin FValue := Text1; if length(sdUTF8Trim(Text2)) > 0 then begin Node := TXmlNode.CreateType(Document, xeCharData); Node.ValueDirect := Text2; NodeInsert(InsertPos, Node); end; end; end else if (ElementType = xeCharData) and assigned(Parent) then begin InsertPos := Parent.NodeIndexOf(Self); if ReplaceEntityReferenceByNodes(Parent, FValue, InsertPos, Text1, Text2) then begin FValue := Text1; if length(sdUTF8Trim(FValue)) = 0 then FValue := ''; if length(sdUTF8Trim(Text2)) > 0 then begin Node := TXmlNode.CreateType(Document, xeCharData); Node.ValueDirect := Text2; Parent.NodeInsert(InsertPos, Node); end; end; end; end; // Do attributes for i := 0 to AttributeCount - 1 do begin Last := AttributeValue[i]; V := ''; repeat Reference := SplitReference(Last, First, Last); Replace := ''; if length(Reference) > 0 then begin Entity := Document.EntityByName[Reference]; if length(Entity) > 0 then Replace := Entity else Replace := '&' + Reference + ';'; end; V := V + First + Replace; until length(Reference) = 0; V := V + Last; AttributeValue[i] := V; end; // Do childnodes too i := 0; while i < NodeCount do begin Nodes[i].ResolveEntityReferences; inc(i); end; // Check for empty AnsiCharData nodes for i := NodeCount - 1 downto 0 do if (Nodes[i].ElementType = xeCharData) and (length(Nodes[i].ValueDirect) = 0) then NodeDelete(i); end; procedure TXmlNode.SetAttributeByName(const AName, Value: UTF8String); begin CheckCreateAttributesList; FAttributes.Values[AName] := sdUTF8QuotedString(sdUTF8EscapeString(Value)); end; procedure TXmlNode.SetAttributeByNameWide(const AName: UTF8String; const Value: UnicodeString); begin SetAttributeByName(AName, FromUnicodeString(Value)); end; procedure TXmlNode.SetAttributeName(Index: integer; const Value: UTF8String); var S: UTF8String; P: integer; begin if (Index >= 0) and (Index < AttributeCount) then begin S := FAttributes[Index]; P := Utf8Pos('=', S); if P > 0 then FAttributes[Index] := Value + '=' + Copy(S, P + 1, MaxInt); end; end; procedure TXmlNode.SetAttributeValue(Index: integer; const Value: UTF8String); begin if (Index >= 0) and (Index < AttributeCount) then FAttributes[Index] := AttributeName[Index] + '=' + sdUTF8QuotedString(sdUTF8EscapeString(Value)); end; procedure TXmlNode.SetAttributeValueAsInteger(Index: integer; const Value: integer); begin SetAttributeValue(Index, IntToUTF8Str(Value)); end; procedure TXmlNode.SetAttributeValueAsUnicodeString(Index: integer; const Value: UnicodeString); begin SetAttributeValue(Index, FromUnicodeString(Value)); end; procedure TXmlNode.SetAttributeValueDirect(Index: integer; const Value: UTF8String); begin if (Index >= 0) and (Index < AttributeCount) then FAttributes[Index] := AttributeName[Index] + '=' + sdUTF8QuotedString(Value); end; procedure TXmlNode.SetBinaryEncoding(const Value: TBinaryEncodingType); begin if assigned(Document) then Document.BinaryEncoding := Value; end; procedure TXmlNode.SetBinaryString(const Value: RawByteString); var OldEncoding: TBinaryEncodingType; begin // Set to base64 OldEncoding := BinaryEncoding; try BinaryEncoding := xbeBase64; if length(Value) = 0 then begin ValueAsString := ''; exit; end; // fill the buffer {$IFDEF CLR} BufferWrite(BytesOf(Value), length(Value)); {$ELSE} BufferWrite(Value[1], length(Value)); {$ENDIF} finally BinaryEncoding := OldEncoding; end; end; procedure TXmlNode.SetName(const Value: UTF8String); var i: integer; begin if FName <> Value then begin // Check if the name abides the rules. We will be very forgiving here and // just accept any name that at least does not contain control AnsiCharacters for i := 1 to length(Value) do if Value[i] in cControlChars then raise Exception.Create(Format(sxeIllegalCharInNodeName, [Value])); FName := Value; end; end; procedure TXmlNode.SetValueAsBool(const Value: boolean); begin FValue := sdStringFromBool(Value); end; procedure TXmlNode.SetValueAsDateTime(const Value: TDateTime); begin ValueAsString := sdDateTimeToString(Value, UseLocalBias); end; procedure TXmlNode.SetValueAsFloat(const Value: double); begin FValue := sdWriteNumber(Value, FloatSignificantDigits, FloatAllowScientific); end; procedure TXmlNode.SetValueAsInt64(const Value: int64); begin FValue := Int64ToUTF8Str(Value); end; procedure TXmlNode.SetValueAsInteger(const Value: integer); begin FValue := IntToUTF8Str(Value); end; procedure TXmlNode.SetValueAsString(const AValue: UTF8String); begin FValue := sdUTF8EscapeString(AValue); end; procedure TXmlNode.SetValueAsUnicodeString(const Value: UnicodeString); begin ValueAsString := FromUnicodeString(Value); end; procedure TXmlNode.SortChildNodes(Compare: TXMLNodeCompareFunction; Info: TPointer); // Sort the child nodes using the quicksort algorithm //local function DoNodeCompare(Node1, Node2: TXmlNode): integer; begin if assigned(Compare) then Result := Compare(Node1, Node2, Info) else if assigned(Document) and assigned(Document.OnNodeCompare) then Result := Document.OnNodeCompare(Document, Node1, Node2, Info) else Result := UTF8CompareText(Node1.Name, Node2.Name); end; // local procedure QuickSort(iLo, iHi: Integer); var Lo, Hi, Mid: longint; begin Lo := iLo; Hi := iHi; Mid:= (Lo + Hi) div 2; repeat while DoNodeCompare(Nodes[Lo], Nodes[Mid]) < 0 do Inc(Lo); while DoNodeCompare(Nodes[Hi], Nodes[Mid]) > 0 do Dec(Hi); if Lo <= Hi then begin // Swap pointers; NodeExchange(Lo, Hi); if Mid = Lo then Mid := Hi else if Mid = Hi then Mid := Lo; Inc(Lo); Dec(Hi); end; until Lo > Hi; if Hi > iLo then QuickSort(iLo, Hi); if Lo < iHi then QuickSort(Lo, iHi); end; // main begin if NodeCount > 1 then QuickSort(0, NodeCount - 1); end; function TXmlNode.ToUnicodeString(const s: UTF8String): UnicodeString; begin Result := sdUtf8ToUnicode(s) end; function TXmlNode.UnescapeString(const AValue: UTF8String): UTF8String; begin Result := sdUTF8UnEscapeString(AValue) end; function TXmlNode.UseFullNodes: boolean; begin Result := False; if assigned(Document) then Result := Document.UseFullNodes; end; function TXmlNode.UseLocalBias: Boolean; begin Result := False; if Assigned(Document) then Result := Document.UseLocalBias; end; function TXmlNode.ValueAsBoolDef(ADefault: boolean): boolean; var Ch: AnsiChar; begin Result := ADefault; if Length(FValue) = 0 then exit; Ch := sdUpCase(FValue[1]); if Ch in ['T', 'Y'] then begin Result := True; exit; end; if Ch in ['F', 'N'] then begin Result := False; exit; end; end; function TXmlNode.ValueAsDateTimeDef(ADefault: TDateTime): TDateTime; begin Result := sdDateTimeFromStringDefault(ValueAsString, ADefault, UseLocalBias); end; function TXmlNode.ValueAsFloatDef(ADefault: double): double; var Code: integer; begin try val(string(sdUTF8StringReplace(FValue, ',', '.')), Result, Code); if Code > 0 then Result := ADefault; except Result := ADefault; end; end; function TXmlNode.ValueAsInt64Def(ADefault: int64): int64; begin Result := StrToInt64Def(string(FValue), ADefault); end; function TXmlNode.ValueAsIntegerDef(ADefault: integer): integer; begin Result := StrToIntDef(string(FValue), ADefault); end; procedure TXmlNode.WriteAttributeBool(const AName: UTF8String; AValue: boolean; ADefault: boolean); var Index: integer; begin if WriteOnDefault or (AValue <> ADefault) then begin Index := AttributeIndexByName(AName); if Index >= 0 then AttributeValue[Index] := sdStringFromBool(AValue) else AttributeAdd(AName, sdStringFromBool(AValue)); end; end; procedure TXmlNode.WriteAttributeDateTime(const AName: UTF8String; AValue, ADefault: TDateTime); var Index: integer; begin if WriteOnDefault or (AValue <> ADefault) then begin Index := AttributeIndexByName(AName); if Index >= 0 then AttributeValue[Index] := sdDateTimeToString(AValue, UseLocalBias) else AttributeAdd(AName, sdDateTimeToString(AValue, UseLocalBias)); end; end; procedure TXmlNode.WriteAttributeFloat(const AName: UTF8String; AValue, ADefault: double); var Index: integer; S: UTF8String; begin if WriteOnDefault or (AValue <> ADefault) then begin Index := AttributeIndexByName(AName); S := sdWriteNumber(AValue, FloatSignificantDigits, FloatAllowScientific); if Index >= 0 then AttributeValue[Index] := S else AttributeAdd(AName, S); end; end; procedure TXmlNode.WriteAttributeInteger(const AName: UTF8String; AValue: integer; ADefault: integer); var Index: integer; begin if WriteOnDefault or (AValue <> ADefault) then begin Index := AttributeIndexByName(AName); if Index >= 0 then AttributeValue[Index] := IntToUTF8Str(AValue) else AttributeAdd(AName, IntToUTF8Str(AValue)); end; end; procedure TXmlNode.WriteAttributeInt64(const AName: UTF8String; const AValue: int64; ADefault: int64); var Index: integer; begin if WriteOnDefault or (AValue <> ADefault) then begin Index := AttributeIndexByName(AName); if Index >= 0 then AttributeValue[Index] := IntToUTF8Str(AValue) else AttributeAdd(AName, IntToUTF8Str(AValue)); end; end; procedure TXmlNode.WriteAttributeString(const AName, AValue, ADefault: UTF8String); var Index: integer; begin if WriteOnDefault or (AValue <> ADefault) then begin Index := AttributeIndexByName(AName); if Index >= 0 then AttributeValue[Index] := AValue else AttributeAdd(AName, AValue); end; end; procedure TXmlNode.WriteBool(const AName: UTF8String; AValue: boolean; ADefault: boolean); const cBoolValues: array[boolean] of UTF8String = ('False', 'True'); begin if WriteOnDefault or (AValue <> ADefault) then with NodeFindOrCreate(AName) do ValueAsString := cBoolValues[AValue]; end; {$IFDEF USEGRAPHICS} procedure TXmlNode.WriteBrush(const AName: UTF8String; ABrush: TBrush); begin with NodeFindOrCreate(AName) do begin WriteColor('Color', ABrush.Color, clBlack); WriteInteger('Style', integer(ABrush.Style), 0); end; end; procedure TXmlNode.WriteColor(const AName: UTF8String; AValue, ADefault: TColor); begin if WriteOnDefault or (AValue <> ADefault) then WriteHex(AName, ColorToRGB(AValue), 8, 0); end; {$ENDIF} procedure TXmlNode.WriteDateTime(const AName: UTF8String; AValue, ADefault: TDateTime); // Date MUST always be written in this format: // YYYY-MM-DD (if just date) or // YYYY-MM-DDThh:mm:ss.sssZ (if date and time. The Z stands for universal time // zone. Since Delphi's TDateTime does not give us a clue about the timezone, // this is the easiest solution) // This format SHOULD NOT be changed, to avoid all kinds of // conversion errors in future. // This format is compatible with the W3C date/time specification as found here: // http://www.w3.org/TR/NOTE-datetime begin if WriteOnDefault or (AValue <> ADefault) then WriteString(AName, sdDateTimeToString(AValue, UseLocalBias), ''); end; procedure TXmlNode.WriteFloat(const AName: UTF8String; AValue: double; ADefault: double); begin if WriteOnDefault or (AValue <> ADefault) then with NodeFindOrCreate(AName) do ValueAsString := sdWriteNumber(AValue, FloatSignificantDigits, FloatAllowScientific); end; {$IFDEF USEGRAPHICS} procedure TXmlNode.WriteFont(const AName: UTF8String; AFont: TFont); begin with NodeFindOrCreate(AName) do begin WriteString('Name', UTF8String(AFont.Name), 'Arial'); WriteColor('Color', AFont.Color, clBlack); WriteInteger('Size', AFont.Size, 14); WriteBool('Bold', fsBold in AFont.Style, False); WriteBool('Italic', fsItalic in AFont.Style, False); WriteBool('Underline', fsUnderline in AFont.Style, False); WriteBool('Strikeout', fsStrikeout in AFont.Style, False); end; end; {$ENDIF} procedure TXmlNode.WriteHex(const AName: UTF8String; AValue, Digits: integer; ADefault: integer); begin if WriteOnDefault or (AValue <> ADefault) then with NodeFindOrCreate(AName) do ValueAsString := '$' + UTF8String(IntToHex(AValue, Digits)); end; function TXmlNode.WriteInnerTag: UTF8String; // Write the inner part of the tag, the one that contains the attributes var i: integer; begin Result := ''; // Attributes for i := 0 to AttributeCount - 1 do // Here we used to prevent empty attributes, but in fact, empty attributes // should be allowed because sometimes they're required Result := Result + ' ' + AttributePair[i]; // End of tag - direct nodes get an extra "/" if QualifyAsDirectNode then Result := Result + '/'; end; procedure TXmlNode.WriteInt64(const AName: UTF8String; AValue, ADefault: int64); begin if WriteOnDefault or (AValue <> ADefault) then with NodeFindOrCreate(AName) do ValueAsString := IntToUTF8Str(AValue); end; procedure TXmlNode.WriteInteger(const AName: UTF8String; AValue: integer; ADefault: integer); begin if WriteOnDefault or (AValue <> ADefault) then with NodeFindOrCreate(AName) do ValueAsString := IntToUTF8Str(AValue); end; {$IFDEF USEGRAPHICS} procedure TXmlNode.WritePen(const AName: UTF8String; APen: TPen); begin with NodeFindOrCreate(AName) do begin WriteColor('Color', APen.Color, clBlack); WriteInteger('Mode', integer(APen.Mode), 0); WriteInteger('Style', integer(APen.Style), 0); WriteInteger('Width', APen.Width, 0); end; end; {$ENDIF} procedure TXmlNode.WriteString(const AName, AValue: UTF8String; const ADefault: UTF8String); begin if WriteOnDefault or (AValue <> ADefault) then with NodeFindOrCreate(AName) do ValueAsString := AValue; end; procedure TXmlNode.WriteToStream(S: TStream); var i: integer; Indent: UTF8String; LFeed: UTF8String; Line: UTF8String; ThisNode, NextNode: TXmlNode; AddLineFeed: boolean; begin Indent := GetIndent; LFeed := GetLineFeed; // Write indent Line := Indent; // Write the node - distinguish node type case ElementType of xeDeclaration: // XML declaration <?xml{declaration}?> begin // Explicitly delete empty attributes in the declaration, // this is usually the encoding and we do not want encoding="" // to show up DeleteEmptyAttributes; Line := Indent + '<?xml' + WriteInnerTag + '?>'; end; xeStylesheet: // Stylesheet <?xml-stylesheet{stylesheet}?> Line := Indent + '<?xml-stylesheet' + WriteInnerTag + '?>'; xeDoctype: begin if NodeCount = 0 then Line := Indent + '<!DOCTYPE ' + Name + ' ' + ValueDirect + '>' else begin Line := Indent + '<!DOCTYPE ' + Name + ' ' + ValueDirect + ' [' + LFeed; sdUTF8WriteStringToStream(S, Line); for i := 0 to NodeCount - 1 do begin Nodes[i].WriteToStream(S); sdUTF8WriteStringToStream(S, LFeed); end; Line := ']>'; end; end; xeElement: Line := Indent + '<!ELEMENT ' + Name + ' ' + ValueDirect + '>'; xeAttList: Line := Indent + '<!ATTLIST ' + Name + ' ' + ValueDirect + '>'; xeEntity: Line := Indent + '<!ENTITY ' + Name + ' ' + ValueDirect + '>'; xeNotation: Line := Indent + '<!NOTATION ' + Name + ' ' + ValueDirect + '>'; xeComment: // Comment <!--{comment}--> Line := Indent + '<!--' + ValueDirect + '-->'; xeCData: // literal data <![CDATA[{data}]]> Line := Indent + '<![CDATA[' + ValueDirect + ']]>'; xeExclam: // Any <!data> Line := Indent + '<!' + ValueDirect + '>'; xeQuestion: // Any <?data?> Line := Indent + '<?' + ValueDirect + '?>'; xeCharData: Line := FValue; xeUnknown: // Any <data> Line := Indent + '<' + ValueDirect + '>'; xeNormal: // normal nodes (xeNormal) begin // Write tag Line := Line + '<' + FName + WriteInnerTag + '>'; // Write value (if any) Line := Line + FValue; if (NodeCount > 0) then // ..and a linefeed Line := Line + LFeed; sdUTF8WriteStringToStream(S, Line); // Write child elements for i := 0 to NodeCount - 1 do begin ThisNode := Nodes[i]; NextNode := Nodes[i + 1]; ThisNode.WriteToStream(S); AddLineFeed := True; if ThisNode.ElementType = xeCharData then AddLineFeed := False; if assigned(NextNode) then if NextNode.ElementType = xeCharData then AddLineFeed := False; if AddLineFeed then sdUTF8WriteStringToStream(S, LFeed); end; // Write end tag Line := ''; if not QualifyAsDirectNode then begin if NodeCount > 0 then Line := Indent; Line := Line + '</' + FName + '>'; end; end; else raise EFilerError.Create(sxeIllegalElementType); end;//case sdUTF8WriteStringToStream(S, Line); // Call the onprogress if assigned(Document) then Document.DoProgress(S.Position); end; function TXmlNode.WriteToString: UTF8String; var S: TsdUTF8StringStream; begin // We will simply call WriteToStream and collect the result as UTF8String using // a string stream S := TsdUTF8StringStream.Create(''); try WriteToStream(S); Result := S.DataString; finally S.Free; end; end; procedure TXmlNode.WriteUnicodeString(const AName: UTF8String; const AValue: UnicodeString; const ADefault: UnicodeString); begin WriteString(AName, FromUnicodeString(AValue), FromUnicodeString(ADefault)); end; { TXmlNodeList } function TXmlNodeList.ByAttribute(const AName, AValue: UTF8String): TXmlNode; var i: integer; begin for i := 0 to Count - 1 do if UTF8CompareText(Items[i].AttributeByName[AName], AValue) = 0 then begin Result := Items[i]; exit; end; Result := nil; end; function TXmlNodeList.GetItems(Index: Integer): TXmlNode; begin Result := TXmlNode(Get(Index)); end; procedure TXmlNodeList.SetItems(Index: Integer; const Value: TXmlNode); begin Put(Index, TPointer(Value)); end; { TNativeXml } procedure TNativeXml.Assign(Source: TPersistent); // local procedure SetDocumentRecursively(ANode: TXmlNode; ADocument: TNativeXml); var i: integer; begin ANode.Document := ADocument; for i := 0 to ANode.NodeCount - 1 do SetDocumentRecursively(ANode.Nodes[i], ADocument); end; // main begin if Source is TNativeXml then begin // Copy private members FBinaryEncoding := TNativeXml(Source).FBinaryEncoding; FDropCommentsOnParse := TNativeXml(Source).FDropCommentsOnParse; FExternalEncoding := TNativeXml(Source).FExternalEncoding; FParserWarnings := TNativeXml(Source).FParserWarnings; FIndentString := TNativeXml(Source).FIndentString; FUseFullNodes := TNativeXml(Source).FUseFullNodes; FUseLocalBias := TNativeXml(Source).FUseLocalBias; FWriteOnDefault := TNativeXml(Source).FWriteOnDefault; FXmlFormat := TNativeXml(Source).FXmlFormat; // Assign root FRootNodes.Assign(TNativeXml(Source).FRootNodes); // Set Document property recursively SetDocumentRecursively(FRootNodes, Self); end else if Source is TXmlNode then begin // Assign this node to the FRootNodes property FRootNodes.Assign(Source); // Set Document property recursively SetDocumentRecursively(FRootNodes, Self); end else inherited; end; procedure TNativeXml.Clear; var Node: TXmlNode; begin // Reset defaults SetDefaults; // Clear root FRootNodes.Clear; // Build default items in RootNodes // - first the declaration Node := TXmlNode.CreateType(Self, xeDeclaration); Node.Name := 'xml'; Node.AttributeAdd('version', cDefaultVersionString); Node.AttributeAdd('encoding', cDefaultEncodingString); FRootNodes.NodeAdd(Node); // - then the root node FRootNodes.NodeNew(''); end; procedure TNativeXml.CopyFrom(Source: TNativeXml); begin if not assigned(Source) then exit; Assign(Source); end; constructor TNativeXml.Create; begin inherited Create; FRootNodes := TXmlNode.Create(Self); Clear; end; constructor TNativeXml.CreateName(const ARootName: UTF8String); begin Create; Root.Name := ARootName; end; destructor TNativeXml.Destroy; begin FreeAndNil(FRootNodes); inherited; end; procedure TNativeXml.DoNodeLoaded(Node: TXmlNode); begin if assigned(FOnNodeLoaded) then FOnNodeLoaded(Self, Node); end; procedure TNativeXml.DoNodeNew(Node: TXmlNode); begin if assigned(FOnNodeNew) then FOnNodeNew(Self, Node); end; procedure TNativeXml.DoProgress(Size: integer); begin if assigned(FOnProgress) then FOnProgress(Self, Size); end; procedure TNativeXml.DoUnicodeLoss(Sender: TObject); begin if assigned(FOnUnicodeLoss) then FOnUnicodeLoss(Self); end; function TNativeXml.GetCommentString: UTF8String; // Get the first comment node, and return its value var Node: TXmlNode; begin Result := ''; Node := FRootNodes.NodeByElementType(xeComment); if assigned(Node) then Result := Node.ValueAsString; end; function TNativeXml.GetEncodingString: UTF8String; begin Result := ''; if FRootNodes.NodeCount > 0 then if FRootNodes[0].ElementType = xeDeclaration then Result := FRootNodes[0].AttributeByName['encoding']; end; function TNativeXml.GetEntityByName(AName: UTF8String): UTF8String; var i, j: integer; begin Result := ''; for i := 0 to FRootNodes.NodeCount - 1 do if FRootNodes[i].ElementType = xeDoctype then with FRootNodes[i] do begin for j := 0 to NodeCount - 1 do if (Nodes[j].ElementType = xeEntity) and (Nodes[j].Name = AName) then begin Result := sdUTF8UnQuotedString(sdUTF8Trim(Nodes[j].ValueDirect)); exit; end; end; end; function TNativeXml.GetRoot: TXmlNode; begin Result := FRootNodes.NodeByElementType(xeNormal); end; function TNativeXml.GetStyleSheetNode: TXmlNode; begin Result := FRootNodes.NodeByElementType(xeStylesheet); if not assigned(Result) then begin // Add a stylesheet node as second one if none present Result := TXmlNode.CreateType(Self, xeStyleSheet); FRootNodes.NodeInsert(1, Result); end; end; function TNativeXml.GetUtf8Encoded: boolean; begin Result := True; end; function TNativeXml.GetVersionString: UTF8String; begin Result := ''; if FRootNodes.NodeCount > 0 then if FRootNodes[0].ElementType = xeDeclaration then Result := FRootNodes[0].AttributeByName['version']; end; function TNativeXml.IsEmpty: boolean; var R: TXmlNode; begin Result := True; R := GetRoot; if assigned(R) then Result := R.IsClear; end; function TNativeXml.LineFeed: UTF8String; begin case XmlFormat of xfReadable: Result := #13#10; xfCompact: Result := #10; else Result := #10; end;//case end; procedure TNativeXml.LoadFromFile(const AFileName: string); var S: TStream; begin S := TFileStream.Create(AFileName, fmOpenRead or fmShareDenyWrite); try LoadFromStream(S); finally S.Free; end; end; procedure TNativeXml.LoadFromStream(Stream: TStream); var B: TsdBufferedReadStream; begin // Create buffer filter. Since we read from the original stream a buffer at a // time, this speeds up the reading process for disk-based files. B := TsdBufferedReadStream.Create(Stream, False); try // We will create a conversion stream as intermediate FCodecStream := TsdUtf8Stream.Create(B); try // Connect events FCodecStream.OnUnicodeLoss := DoUnicodeLoss; // Read from stream ReadFromStream(FCodecStream); // Set our external encoding FExternalEncoding := FCodecStream.Encoding; finally FreeAndNil(FCodecStream); end; finally B.Free; end; end; procedure TNativeXml.ParseDTD(ANode: TXmlNode; S: TStream); // DTD parsing is quite different from normal node parsing so it is brought // under in the main NativeXml object // local procedure ParseMarkupDeclarations; var Ch: AnsiChar; begin repeat ANode.NodeNew('').ReadFromStream(S); // Read AnsiCharacter, exit if none available repeat if S.Read(Ch, 1) = 0 then exit; // Read until end markup declaration or end until not (Ch in cControlChars); if Ch = ']' then break; S.Seek(-1, soCurrent); until False; end; // main var Prework: UTF8String; Ch: AnsiChar; Words: TsdUTF8StringList; begin // Get the name and external ID Prework := ''; repeat // Read AnsiCharacter, exit if none available if S.Read(Ch, 1) = 0 then exit; // Read until markup declaration or end if Ch in ['[', '>'] then break; Prework := Prework + UTF8String(Ch); until False; Words := TsdUTF8StringList.Create; try sdUTF8ParseAttributes(Prework, 1, length(Prework) + 1, Words); // First word is name if Words.Count > 0 then begin ANode.Name := Words[0]; Words.Delete(0); // Put the rest in the valuedirect ANode.ValueDirect := sdUTF8Trim(sdUTF8StringReplace(Words.Text, #13#10, ' ')); end; finally Words.Free; end; if Ch = '[' then begin // Parse any !ENTITY nodes and such ParseMarkupDeclarations; // read final tag repeat if S.Read(Ch, 1) = 0 then exit; if Ch = '>' then break; until False; end; end; procedure TNativeXml.ReadFromStream(S: TStream); var i: integer; Node: TXmlNode; Enc: UTF8String; NormalCount, DeclarationCount, DoctypeCount, CDataCount: integer; NormalPos, DoctypePos: integer; begin FAbortParsing := False; with FRootNodes do begin // Clear the old root nodes - we do not reset the defaults Clear; DoProgress(0); repeat Node := NodeNew(''); Node.ReadFromStream(S); if AbortParsing then exit; // XML declaration if Node.ElementType = xeDeclaration then begin if Node.HasAttribute('encoding') then Enc := Node.AttributeByName['encoding'] else FCodecStream.Encoding := seUTF8; // Check encoding if assigned(FCodecStream) and (AnsiUpperCase(string(Enc)) = 'UTF-8') then FCodecStream.Encoding := seUTF8; end; // Skip clear nodes if Node.IsClear then NodeDelete(NodeCount - 1); until S.Position >= S.Size; DoProgress(S.Size); // Do some checks NormalCount := 0; DeclarationCount := 0; DoctypeCount := 0; CDataCount := 0; NormalPos := -1; DoctypePos := -1; for i := 0 to NodeCount - 1 do begin // Count normal elements - there may be only one case Nodes[i].ElementType of xeNormal: begin inc(NormalCount); NormalPos := i; end; xeDeclaration: inc(DeclarationCount); xeDoctype: begin inc(DoctypeCount); DoctypePos := i; end; xeCData: inc(CDataCount); end;//case end; // We *must* have a root node if NormalCount = 0 then raise EFilerError.Create(sxeNoRootElement); // Do some validation if we allow parser warnings if FParserWarnings then begin // Check for more than one root node if NormalCount > 1 then raise EFilerError.Create(sxeMoreThanOneRootElement); // Check for more than one xml declaration if DeclarationCount > 1 then raise EFilerError.Create(sxeMoreThanOneDeclaration); // Declaration must be first element if present if DeclarationCount = 1 then if Nodes[0].ElementType <> xeDeclaration then raise EFilerError.Create(sxeDeclarationMustBeFirstElem); // Check for more than one DTD if DoctypeCount > 1 then raise EFilerError.Create(sxeMoreThanOneDoctype); // Check if DTD is after root, this is not allowed if (DoctypeCount = 1) and (DoctypePos > NormalPos) then raise EFilerError.Create(sxeDoctypeAfterRootElement); // No CDATA in root allowed if CDataCount > 0 then raise EFilerError.Create(sxeCDataInRoot); end; end;//with end; procedure TNativeXml.ReadFromString(const AValue: UTF8String); var S: TStream; begin S := TsdUTF8StringStream.Create(AValue); try ReadFromStream(S); finally S.Free; end; end; procedure TNativeXml.ResolveEntityReferences; begin if assigned(Root) then Root.ResolveEntityReferences; end; procedure TNativeXml.SaveToFile(const AFileName: string); var S: TStream; begin S := TFileStream.Create(AFileName, fmCreate); try SaveToStream(S); finally S.Free; end; end; procedure TNativeXml.SaveToStream(Stream: TStream); var B: TsdBufferedWriteStream; begin // Create buffer filter. Since we write a buffer at a time to the destination // stream, this speeds up the writing process for disk-based files. B := TsdBufferedWriteStream.Create(Stream, False); try // Create conversion stream FCodecStream := TsdUtf8Stream.Create(B); try // Set External encoding FCodecStream.Encoding := FExternalEncoding; WriteToStream(FCodecStream); finally FreeAndNil(FCodecStream); end; finally B.Free; end; end; procedure TNativeXml.SetCommentString(const Value: UTF8String); // Find first comment node and set it's value, otherwise add new comment node // right below the xml declaration var Node: TXmlNode; begin Node := FRootNodes.NodeByElementType(xeComment); if not assigned(Node) and (length(Value) > 0) then begin Node := TXmlNode.CreateType(Self, xeComment); FRootNodes.NodeInsert(1, Node); end; if assigned(Node) then Node.ValueAsString := Value; end; procedure TNativeXml.SetDefaults; begin // Defaults FExternalEncoding := cDefaultExternalEncoding; FXmlFormat := cDefaultXmlFormat; FWriteOnDefault := cDefaultWriteOnDefault; FBinaryEncoding := cDefaultBinaryEncoding; FIndentString := cDefaultIndentString; FDropCommentsOnParse := cDefaultDropCommentsOnParse; FUseFullNodes := cDefaultUseFullNodes; FUseLocalBias := cDefaultUseLocalBias; FFloatAllowScientific := cDefaultFloatAllowScientific; FFloatSignificantDigits := cDefaultFloatSignificantDigits; FOnNodeNew := nil; FOnNodeLoaded := nil; end; procedure TNativeXml.SetEncodingString(const Value: UTF8String); var Node: TXmlNode; begin if Value = GetEncodingString then exit; Node := FRootNodes[0]; if not assigned(Node) or (Node.ElementType <> xeDeclaration) then begin Node := TXmlNode.CreateType(Self, xeDeclaration); FRootNodes.NodeInsert(0, Node); end; if assigned(Node) then Node.AttributeByName['encoding'] := Value; end; procedure TNativeXml.SetVersionString(const Value: UTF8String); var Node: TXmlNode; begin if Value = GetVersionString then exit; Node := FRootNodes[0]; if not assigned(Node) or (Node.ElementType <> xeDeclaration) then begin if length(Value) > 0 then begin Node := TXmlNode.CreateType(Self, xeDeclaration); FRootNodes.NodeInsert(0, Node); end; end; if assigned(Node) then Node.AttributeByName['version'] := Value; end; procedure TNativeXml.WriteToStream(S: TStream); var i: integer; begin if not assigned(Root) and FParserWarnings then raise EFilerError.Create(sxeRootElementNotDefined); DoProgress(0); // write the root nodes for i := 0 to FRootNodes.NodeCount - 1 do begin FRootNodes[i].WriteToStream(S); sdUTF8WriteStringToStream(S, LineFeed); end; DoProgress(S.Size); end; function TNativeXml.WriteToString: UTF8String; var S: TsdUTF8StringStream; begin S := TsdUTF8StringStream.Create(''); try WriteToStream(S); Result := S.DataString; finally S.Free; end; end; { TsdCodecStream } constructor TsdCodecStream.Create(AStream: TStream); begin inherited Create; FStream := AStream; end; function TsdCodecStream.InternalRead(var Buffer{$IFDEF CLR}: array of Byte{$ENDIF}; Offset, Count: Longint): Longint; // Read from FStream and pass back data var i, j: integer; BOM: array[0..3] of byte; BytesRead: integer; Found: boolean; begin Result := 0; if FMode = umUnknown then begin FMode := umRead; // Check FStream if not assigned(FStream) then raise EStreamError.Create(sxeCodecStreamNotAssigned); // Determine encoding FEncoding := seAnsi; BytesRead := FStream.Read(BOM, 4); for i := 0 to cBomInfoCount - 1 do begin Found := True; for j := 0 to Min(BytesRead, cBomInfo[i].Len) - 1 do begin if BOM[j] <> cBomInfo[i].BOM[j] then begin Found := False; break; end; end; if Found then break; end; if Found then begin FEncoding := cBomInfo[i].Encoding; FWriteBom := cBomInfo[i].HasBOM; end else begin // Unknown.. default to this FEncoding := seAnsi; FWriteBom := False; end; // Some encodings are not supported (yet) if FEncoding in [seUCS4BE, seUCS4_2143, seUCS4_3412, seEBCDIC] then raise EStreamError.Create(sxeUnsupportedEncoding); // Correct stream to start position if FWriteBom then FStream.Seek(cBomInfo[i].Len - BytesRead, soCurrent) else FStream.Seek(-BytesRead, soCurrent); // Check if we must swap byte order if FEncoding in [se16BitBE, seUTF16BE] then FSwapByteOrder := True; end; // Check mode if FMode <> umRead then raise EStreamError.Create(sxeCannotReadCodecForWriting); // Check count if Count <> 1 then raise EStreamError.Create(sxeCannotReadMultipeChar); // Now finally read TBytes(Buffer)[Offset] := ReadByte; if TBytes(Buffer)[Offset] <> 0 then Result := 1; end; {$IFDEF CLR} function TsdCodecStream.Read(var Buffer: array of Byte; Offset, Count: Longint): Longint; begin Result := InternalRead(Buffer, Offset, Count); end; {$ELSE} function TsdCodecStream.Read(var Buffer; Count: Longint): Longint; begin Result := InternalRead(Buffer, 0, Count); end; {$ENDIF} function TsdCodecStream.ReadByte: byte; begin // default does nothing Result := 0; end; function TsdCodecStream.InternalSeek(Offset: Longint; Origin: TSeekOrigin): Longint; begin Result := 0; if FMode = umUnknown then raise EStreamError.Create(sxeCannotSeekBeforeReadWrite); if Origin = soCurrent then begin if Offset = 0 then begin // Position Result := FStream.Position; exit; end; if (FMode = umRead) and ((Offset = -1) or (Offset = -2)) then begin FBuffer := ''; case Offset of -1: FStream.Seek(FPosMin1, soBeginning); -2: FStream.Seek(FPosMin2, soBeginning); end;//case exit; end; end; if (Origin = soEnd) and (Offset = 0) then begin // Size Result := FStream.Size; exit; end; // Ignore set position from beginning (used in Size command) if Origin = soBeginning then exit; // Arriving here means we cannot do it raise EStreamError.Create(sxeCannotPerformSeek); end; {$IFDEF CLR} function TsdCodecStream.Seek(const Offset: Int64; Origin: TSeekOrigin): Int64; begin Result := InternalSeek(Offset, Origin); end; {$ELSE} function TsdCodecStream.Seek(Offset: Longint; Origin: Word): Longint; begin Result := InternalSeek(Offset, TSeekOrigin(Origin)); end; {$ENDIF} procedure TsdCodecStream.StorePrevPositions; begin FPosMin2 := FPosMin1; FPosMin1 := FStream.Position; end; function TsdCodecStream.InternalWrite(const Buffer{$IFDEF CLR}: array of Byte{$ENDIF}; Offset, Count: Longint): Longint; var i: integer; begin if FMode = umUnknown then begin FMode := umWrite; // Some encodings are not supported (yet) if FEncoding in [seUCS4BE, seUCS4_2143, seUCS4_3412, seEBCDIC] then raise EStreamError.Create(sxeUnsupportedEncoding); // Find correct encoding info for i := 0 to cBomInfoCount - 1 do if cBomInfo[i].Encoding = FEncoding then begin // we do not write BOM if UTF8 since UTF8 is default FWriteBom := cBomInfo[i].HasBOM and (FEncoding <> seUTF8); break; end; // Write BOM if FWriteBom then FStream.WriteBuffer(cBomInfo[i].BOM, cBomInfo[i].Len); // Check if we must swap byte order if FEncoding in [se16BitBE, seUTF16BE] then FSwapByteOrder := True; end; if FMode <> umWrite then raise EStreamError.Create(sxeCannotWriteCodecForReading); WriteBuf(Buffer, Offset, Count); Result := Count; end; {$IFDEF CLR} function TsdCodecStream.Write(const Buffer: array of Byte; Offset, Count: Longint): Longint; begin Result := InternalWrite(Buffer, Offset, Count); end; {$ELSE} function TsdCodecStream.Write(const Buffer; Count: Longint): Longint; begin Result := InternalWrite(Byte(Buffer), 0, Count); end; {$ENDIF} procedure TsdCodecStream.WriteBuf(const Buffer{$IFDEF CLR}: TBytes{$ENDIF}; Offset, Count: longint); var i: integer; begin // Default just writes out bytes one by one. We override this in descendants // to provide faster writes for some modes for i := 0 to Count - 1 do {$IFDEF CLR} WriteByte(Buffer[Offset + i]); {$ELSE} WriteByte(TBytes(Buffer)[Offset + i]); {$ENDIF} end; procedure TsdCodecStream.WriteByte(const B: byte); begin // default does nothing end; {$IFDEF CLR} procedure TsdCodecStream.SetSize(NewSize: Int64); begin // default does nothing end; {$ENDIF} { TsdUtf8Stream } function TsdUtf8Stream.ReadByte: byte; var B, B1, B2, B3: byte; W: word; SA: AnsiString; begin Result := 0; // New AnsiCharacter? if (Length(FBuffer) = 0) or (FBufferPos > length(FBuffer)) then begin StorePrevPositions; FBufferPos := 1; // Read another AnsiChar and put in buffer case FEncoding of seAnsi: begin // read one byte B := 0; FStream.Read(B, 1); SA := AnsiChar(B); // Convert to UTF8 FBuffer := sdAnsiToUtf8(SA); end; seUTF8: begin // Read one, two or three bytes in the buffer B1 := 0; FStream.Read(B1, 1); FBuffer := AnsiChar(B1); if (B1 and $80) > 0 then begin if (B1 and $20) <> 0 then begin B2 := 0; FStream.Read(B2, 1); FBuffer := FBuffer + UTF8String(AnsiChar(B2)); end; B3 := 0; FStream.Read(B3, 1); FBuffer := FBuffer + UTF8String(AnsiChar(B3)); end; end; se16BitBE, se16BitLE, seUTF16BE, seUTF16LE: begin // Read two bytes W := 0; FStream.Read(W, 2); // Swap byte order if FSwapByteOrder then W := swap(W); // Convert to UTF8 in buffer FBuffer := sdUnicodeToUtf8(UnicodeChar(W)); end; else raise EStreamError.Create(sxeUnsupportedEncoding); end;//case end; // Now we have the buffer, so read if (FBufferPos > 0) and (FBufferPos <= length(FBuffer)) then Result := byte(FBuffer[FBufferPos]); inc(FBufferPos); end; procedure TsdUtf8Stream.WriteBuf(const Buffer{$IFDEF CLR}: TBytes{$ENDIF}; Offset, Count: longint); begin case FEncoding of seUtf8: begin // one on one if StreamWrite(FStream, Buffer, Offset, Count) <> Count then raise EStreamError.Create(sxeCannotWriteToOutputStream); end else inherited; end;//case end; procedure TsdUtf8Stream.WriteByte(const B: byte); var SA: AnsiString; SW: UnicodeString; MustWrite: boolean; begin case FEncoding of seAnsi, se16BitBE, se16BitLE, seUTF16BE, seUTF16LE: begin MustWrite := True; case Length(FBuffer) of 0: begin FBuffer := AnsiChar(B); if (B and $80) <> 0 then MustWrite := False; end; 1: begin FBuffer := FBuffer + UTF8String(AnsiChar(B)); if (byte(FBuffer[1]) and $20) <> 0 then MustWrite := False; end; 2: FBuffer := FBuffer + UTF8String(AnsiChar(B)); end; if MustWrite then begin if FEncoding = seAnsi then begin // Convert to ansi SA := sdUtf8ToAnsi(FBuffer); // write out if length(SA) = 1 then if FStream.Write(SA[1], 1) <> 1 then raise EStreamError.Create(sxeCannotWriteToOutputStream); end else begin // Convert to unicode SW := sdUtf8ToUnicode(FBuffer); // write out if length(SW) = 1 then if FStream.Write(SW[1], 2) <> 2 then raise EStreamError.Create(sxeCannotWriteToOutputStream); end; FBuffer := ''; end; end; seUTF8: begin // Just a flat write of one byte if FStream.Write(B, 1) <> 1 then raise EStreamError.Create(sxeCannotWriteToOutputStream); end; else raise EStreamError.Create(sxeUnsupportedEncoding); end;//case end; {$IFDEF CLR} { TsdBufferedStream } constructor TsdBufferedStream.Create(AStream: TStream; Owned: Boolean = False); begin inherited Create; FStream := AStream; FOwned := Owned; end; destructor TsdBufferedStream.Destroy; begin if FOwned then FreeAndNil(FStream); inherited Destroy; end; function TsdBufferedStream.Read(var Buffer: array of Byte; Offset, Count: Longint): Longint; begin Result := FStream.Read(Buffer, Offset, Count); end; function TsdBufferedStream.Write(const Buffer: array of Byte; Offset, Count: Longint): Longint; begin Result := FStream.Write(Buffer, Offset, Count); end; function TsdBufferedStream.Seek(const Offset: Int64; Origin: TSeekOrigin): Int64; begin Result := FStream.Seek(Offset, Origin); end; procedure TsdBufferedStream.SetSize(NewSize: Int64); begin FStream.Size := NewSize; end; {$ELSE} { TsdBufferedReadStream } const cMaxBufferSize = $10000; // 65536 bytes in the buffer procedure TsdBufferedReadStream.CheckPosition; var NewPage: integer; FStartPos: longint; begin // Page and buffer position NewPage := FPosition div cMaxBufferSize; FBufPos := FPosition mod cMaxBufferSize; // Read new page if required if (NewPage <> FPage) then begin // New page and buffer FPage := NewPage; // Start position in stream FStartPos := FPage * cMaxBufferSize; FBufSize := Min(cMaxBufferSize, FStream.Size - FStartPos); FStream.Seek(FStartPos, soBeginning); if FBufSize > 0 then FStream.Read(FBuffer^, FBufSize); end; FMustCheck := False; end; constructor TsdBufferedReadStream.Create(AStream: TStream; Owned: boolean); begin inherited Create; FStream := AStream; FOwned := Owned; FMustCheck := True; FPage := -1; // Set to invalid number to force an update on first read ReallocMem(FBuffer, cMaxBufferSize); end; destructor TsdBufferedReadStream.Destroy; begin if FOwned then FreeAndNil(FStream); ReallocMem(FBuffer, 0); inherited; end; function TsdBufferedReadStream.Read(var Buffer; Count: longint): Longint; var Packet: PByte; PacketCount: integer; begin // Set the right page if FMustCheck then CheckPosition; // Special case - read one byte, most often if (Count = 1) and (FBufPos < FBufSize - 1) then begin byte(Buffer) := FBuffer^[FBufPos]; inc(FBufPos); inc(FPosition); Result := 1; exit; end; // general case Packet := @Buffer; Result := 0; while Count > 0 do begin PacketCount := min(FBufSize - FBufPos, Count); if PacketCount <= 0 then exit; Move(FBuffer^[FBufPos], Packet^, PacketCount); dec(Count, PacketCount); inc(Packet, PacketCount); inc(Result, PacketCount); inc(FPosition, PacketCount); inc(FBufPos, PacketCount); if FBufPos >= FBufSize then CheckPosition; end; end; function TsdBufferedReadStream.Seek(Offset: longint; Origin: Word): Longint; begin case Origin of soFromBeginning: FPosition := Offset; soFromCurrent: begin // no need to check in this case - it is the GetPosition command if Offset = 0 then begin Result := FPosition; exit; end; FPosition := FPosition + Offset; end; soFromEnd: FPosition := FStream.Size + Offset; end;//case Result := FPosition; FMustCheck := True; end; function TsdBufferedReadStream.Write(const Buffer; Count: longint): Longint; begin raise EStreamError.Create(sxeCannotWriteCodecForReading); end; { TsdBufferedWriteStream } constructor TsdBufferedWriteStream.Create(AStream: TStream; Owned: boolean); begin inherited Create; FStream := AStream; FOwned := Owned; ReallocMem(FBuffer, cMaxBufferSize); end; destructor TsdBufferedWriteStream.Destroy; begin Flush; if FOwned then FreeAndNil(FStream); ReallocMem(FBuffer, 0); inherited; end; procedure TsdBufferedWriteStream.Flush; begin // Write the buffer to the stream if FBufPos > 0 then begin FStream.Write(FBuffer^, FBufPos); FBufPos := 0; end; end; function TsdBufferedWriteStream.Read(var Buffer; Count: longint): Longint; begin raise EStreamError.Create(sxeCannotReadCodecForWriting); end; function TsdBufferedWriteStream.Seek(Offset: longint; Origin: Word): Longint; begin case Origin of soFromBeginning: if Offset = FPosition then begin Result := FPosition; exit; end; soFromCurrent: begin // GetPosition command if Offset = 0 then begin Result := FPosition; exit; end; end; soFromEnd: if Offset = 0 then begin Result := FPosition; exit; end; end;//case raise EStreamError.Create(sxeCannotPerformSeek); end; function TsdBufferedWriteStream.Write(const Buffer; Count: longint): Longint; var Packet: PByte; PacketCount: integer; begin // Special case - read less bytes than would fill buffersize if (FBufPos + Count < cMaxBufferSize) then begin Move(Buffer, FBuffer^[FBufPos], Count); inc(FBufPos, Count); inc(FPosition, Count); Result := Count; exit; end; // general case that wraps buffer Packet := @Buffer; Result := 0; while Count > 0 do begin PacketCount := min(cMaxBufferSize - FBufPos, Count); if PacketCount <= 0 then exit; Move(Packet^, FBuffer^[FBufPos], PacketCount); dec(Count, PacketCount); inc(Result, PacketCount); inc(FPosition, PacketCount); inc(Packet, PacketCount); inc(FBufPos, PacketCount); if FBufPos = cMaxBufferSize then Flush; end; end; {$ENDIF} { TsdSurplusReader } constructor TsdSurplusReader.Create(AStream: TStream); begin inherited Create; FStream := AStream; end; function TsdSurplusReader.ReadChar(var Ch: AnsiChar): integer; begin if length(FSurplus) > 0 then begin Ch := FSurplus[1]; FSurplus := copy(FSurplus, 2, length(FSurplus) - 1); Result := 1; end else Result := FStream.Read(Ch, 1); end; function TsdSurplusReader.ReadCharSkipBlanks(var Ch: AnsiChar): boolean; begin Result := False; repeat // Read AnsiCharacter, exit if none available if ReadChar(Ch) = 0 then exit; // Skip if in controlchars if not (Ch in cControlchars) then break; until False; Result := True; end; { TsdStringBuilder } procedure TsdStringBuilder.AddChar(Ch: AnsiChar); begin inc(FCurrentIdx); Reallocate(FCurrentIdx); FData[FCurrentIdx] := Ch; end; procedure TsdStringBuilder.AddString(var S: UTF8String); var {$IFDEF CLR} i: integer; {$ENDIF} Count: integer; begin {$IFDEF CLR} Count := S.Length; {$ELSE} Count := System.length(S); {$ENDIF} if Count = 0 then exit; Reallocate(FCurrentIdx + Count); {$IFDEF CLR} for i := 1 to S.Length do FData[FCurrentIdx + i] := S[i]; {$ELSE} Move(S[1], FData[FCurrentIdx + 1], Count); {$ENDIF} inc(FCurrentIdx, Count); end; procedure TsdStringBuilder.Clear; begin FCurrentIdx := 0; end; function TsdStringBuilder.StringCopy(AFirst, ALength: integer): UTF8String; begin if ALength > FCurrentIdx - AFirst + 1 then ALength := FCurrentIdx - AFirst + 1; Result := Copy(FData, AFirst, ALength); end; constructor TsdStringBuilder.Create; begin inherited Create; SetLength(FData, 64); end; function TsdStringBuilder.GetData(Index: integer): AnsiChar; begin Result := FData[Index]; end; procedure TsdStringBuilder.Reallocate(RequiredLength: integer); begin {$IFDEF CLR} while FData.Length < RequiredLength do SetLength(FData, FData.Length * 2); {$ELSE} while System.Length(FData) < RequiredLength do SetLength(FData, System.Length(FData) * 2); {$ENDIF} end; function TsdStringBuilder.Value: UTF8String; begin Result := Copy(FData, 1, FCurrentIdx); end; end. |
Added DAT2ICS/src/lib/NativeXml/NativeXmlObjectStorage.pas.
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1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 | { unit NativeXmlObjectStorage This unit provides functionality to store any TObject descendant to an XML file or stream. Internally it makes full use of RTTI (runtime type information) in order to store all published properties and events. It can even be used to copy forms, but form inheritance is not exploited, so child forms descending from parent forms store everything that the parent already stored. All published properties and events of objects are stored. This includes the "DefineProperties". These are stored in binary form in the XML, encoded as BASE64. Known limitations: - The method and event lookup will not work correctly across forms. Please see the "ObjectToXML" demo for example usage of this unit. Original Author: Nils Haeck M.Sc. Copyright (c) 2003-2009 Simdesign B.V. It is NOT allowed under ANY circumstances to publish or copy this code without accepting the license conditions in accompanying LICENSE.txt first! This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. Please visit http://www.simdesign.nl/xml.html for more information. } unit NativeXmlObjectStorage; {$i NativeXml.inc} interface uses Classes, Forms, SysUtils, Controls, NativeXml, TypInfo, Variants; type // Use TsdXmlObjectWriter to write any TPersistent descendant's published properties // to an XML node. TsdXmlObjectWriter = class(TPersistent) protected procedure WriteProperty(ANode: TXmlNode; AObject: TObject; AParent: TComponent; PropInfo: PPropInfo); public // Call WriteObject to write the published properties of AObject to the TXmlNode // ANode. Specify AParent in order to store references to parent methods and // events correctly. procedure WriteObject(ANode: TXmlNode; AObject: TObject; AParent: TComponent = nil); // Call WriteComponent to write the published properties of AComponent to the TXmlNode // ANode. Specify AParent in order to store references to parent methods and // events correctly. procedure WriteComponent(ANode: TXmlNode; AComponent: TComponent; AParent: TComponent = nil); end; // Use TsdXmlObjectReader to read any TPersistent descendant's published properties // from an XML node. TsdXmlObjectReader = class(TPersistent) protected procedure ReadProperty(ANode: TXmlNode; AObject: TObject; AParent: TComponent; PropInfo: PPropInfo); public // Call CreateComponent to first create AComponent and then read its published // properties from the TXmlNode ANode. Specify AParent in order to resolve // references to parent methods and events correctly. In order to successfully // create the component from scratch, the component's class must be registered // beforehand with a call to RegisterClass. Specify Owner to add the component // as a child to Owner's component list. This is usually a form. Specify Name // as the new component name for the created component. function CreateComponent(ANode: TXmlNode; AOwner, AParent: TComponent; AName: string = ''): TComponent; // Call ReadObject to read the published properties of AObject from the TXmlNode // ANode. Specify AParent in order to resolve references to parent methods and // events correctly. procedure ReadObject(ANode: TXmlNode; AObject: TObject; AParent: TComponent = nil); // Call ReadComponent to read the published properties of AComponent from the TXmlNode // ANode. Specify AParent in order to resolve references to parent methods and // events correctly. procedure ReadComponent(ANode: TXmlNode; AComponent: TComponent; AParent: TComponent); end; ENativeXmlObjectStorage = class(Exception); // High-level create methods // Create and read a component from the XML file with FileName. In order to successfully // create the component from scratch, the component's class must be registered // beforehand with a call to RegisterClass. Specify Owner to add the component // as a child to Owner's component list. This is usually a form. Specify Name // as the new component name for the created component. function ComponentCreateFromXmlFile(const FileName: string; Owner: TComponent; const Name: string): TComponent; // Create and read a component from the TXmlNode ANode. In order to successfully // create the component from scratch, the component's class must be registered // beforehand with a call to RegisterClass. Specify Owner to add the component // as a child to Owner's component list. This is usually a form. Specify Name // as the new component name for the created component. function ComponentCreateFromXmlNode(ANode: TXmlNode; Owner: TComponent; const Name: string): TComponent; // Create and read a component from the XML stream S. In order to successfully // create the component from scratch, the component's class must be registered // beforehand with a call to RegisterClass. Specify Owner to add the component // as a child to Owner's component list. This is usually a form. Specify Name // as the new component name for the created component. function ComponentCreateFromXmlStream(S: TStream; Owner: TComponent; const Name: string): TComponent; // Create and read a component from the XML in string in Value. In order to successfully // create the component from scratch, the component's class must be registered // beforehand with a call to RegisterClass. Specify Owner to add the component // as a child to Owner's component list. This is usually a form. Specify Name // as the new component name for the created component. function ComponentCreateFromXmlString(const Value: string; Owner: TComponent; const Name: string): TComponent; // Create and read a form from the XML file with FileName. In order to successfully // create the form from scratch, the form's class must be registered // beforehand with a call to RegisterClass. Specify Owner to add the form // as a child to Owner's component list. For forms this is usually Application. // Specify Name as the new form name for the created form. function FormCreateFromXmlFile(const FileName: string; Owner: TComponent; const Name: string): TForm; // Create and read a form from the XML stream in S. In order to successfully // create the form from scratch, the form's class must be registered // beforehand with a call to RegisterClass. Specify Owner to add the form // as a child to Owner's component list. For forms this is usually Application. // Specify Name as the new form name for the created form. function FormCreateFromXmlStream(S: TStream; Owner: TComponent; const Name: string): TForm; // Create and read a form from the XML string in Value. In order to successfully // create the form from scratch, the form's class must be registered // beforehand with a call to RegisterClass. Specify Owner to add the form // as a child to Owner's component list. For forms this is usually Application. // Specify Name as the new form name for the created form. function FormCreateFromXmlString(const Value: string; Owner: TComponent; const Name: string): TForm; // High-level load methods // Load all the published properties of AObject from the XML file in Filename. // Specify AParent in order to resolve references to parent methods and // events correctly. procedure ObjectLoadFromXmlFile(AObject: TObject; const FileName: string; AParent: TComponent = nil); // Load all the published properties of AObject from the TXmlNode ANode. // Specify AParent in order to resolve references to parent methods and // events correctly. procedure ObjectLoadFromXmlNode(AObject: TObject; ANode: TXmlNode; AParent: TComponent = nil); // Load all the published properties of AObject from the XML stream in S. // Specify AParent in order to resolve references to parent methods and // events correctly. procedure ObjectLoadFromXmlStream(AObject: TObject; S: TStream; AParent: TComponent = nil); // Load all the published properties of AObject from the XML string in Value. // Specify AParent in order to resolve references to parent methods and // events correctly. procedure ObjectLoadFromXmlString(AObject: TObject; const Value: string; AParent: TComponent = nil); // High-level save methods // Save all the published properties of AObject as XML to the file in Filename. // Specify AParent in order to store references to parent methods and // events correctly. procedure ObjectSaveToXmlFile(AObject: TObject; const FileName: string; AParent: TComponent = nil); // Save all the published properties of AObject to the TXmlNode ANode. // Specify AParent in order to store references to parent methods and // events correctly. procedure ObjectSaveToXmlNode(AObject: TObject; ANode: TXmlNode; AParent: TComponent = nil); // Save all the published properties of AObject as XML in stream S. // Specify AParent in order to store references to parent methods and // events correctly. procedure ObjectSaveToXmlStream(AObject: TObject; S: TStream; AParent: TComponent = nil); // Save all the published properties of AObject as XML in string Value. // Specify AParent in order to store references to parent methods and // events correctly. function ObjectSaveToXmlString(AObject: TObject; AParent: TComponent = nil): string; // Save all the published properties of AComponent as XML in the file in Filename. // Specify AParent in order to store references to parent methods and // events correctly. procedure ComponentSaveToXmlFile(AComponent: TComponent; const FileName: string; AParent: TComponent = nil); // Save all the published properties of AComponent to the TXmlNode ANode. // Specify AParent in order to store references to parent methods and // events correctly. procedure ComponentSaveToXmlNode(AComponent: TComponent; ANode: TXmlNode; AParent: TComponent = nil); // Save all the published properties of AComponent as XML in the stream in S. // Specify AParent in order to store references to parent methods and // events correctly. procedure ComponentSaveToXmlStream(AComponent: TComponent; S: TStream; AParent: TComponent = nil); // Save all the published properties of AComponent as XML in the string Value. // Specify AParent in order to store references to parent methods and // events correctly. function ComponentSaveToXmlString(AComponent: TComponent; AParent: TComponent = nil): string; // Save the form AForm as XML to the file in Filename. This method also stores // properties of all child components on the form, and can therefore be used // as a form-storage method. procedure FormSaveToXmlFile(AForm: TForm; const FileName: string); // Save the form AForm as XML to the stream in S. This method also stores // properties of all child components on the form, and can therefore be used // as a form-storage method. procedure FormSaveToXmlStream(AForm: TForm; S: TStream); // Save the form AForm as XML to a string. This method also stores // properties of all child components on the form, and can therefore be used // as a form-storage method. function FormSaveToXmlString(AForm: TForm): string; function XPathFromNode(ANode: TXmlNode): string; resourcestring sxwIllegalVarType = 'Illegal variant type'; sxrUnregisteredClassType = 'Unregistered classtype encountered in '; sxrInvalidPropertyValue = 'Invalid property value'; sxwInvalidMethodName = 'Invalid method name'; implementation type TPersistentAccess = class(TPersistent); TComponentAccess = class(TComponent) public procedure SetComponentState(const AState: TComponentState); published property ComponentState; end; TReaderAccess = class(TReader); function ComponentCreateFromXmlFile(const FileName: string; Owner: TComponent; const Name: string): TComponent; var S: TStream; begin S := TFileStream.Create(FileName, fmOpenRead or fmShareDenyNone); try Result := ComponentCreateFromXmlStream(S, Owner, Name); finally S.Free; end; end; function ComponentCreateFromXmlNode(ANode: TXmlNode; Owner: TComponent; const Name: string): TComponent; var AReader: TsdXmlObjectReader; begin Result := nil; if not assigned(ANode) then exit; // Create reader AReader := TsdXmlObjectReader.Create; try // Read the component from the node Result := AReader.CreateComponent(ANode, Owner, nil, Name); finally AReader.Free; end; end; function ComponentCreateFromXmlStream(S: TStream; Owner: TComponent; const Name: string): TComponent; var ADoc: TNativeXml; begin Result := nil; if not assigned(S) then exit; // Create XML document ADoc := TNativeXml.Create; try // Load XML ADoc.LoadFromStream(S); // Load from XML node Result := ComponentCreateFromXmlNode(ADoc.Root, Owner, Name); finally ADoc.Free; end; end; function ComponentCreateFromXmlString(const Value: string; Owner: TComponent; const Name: string): TComponent; var S: TStream; begin S := TStringStream.Create(Value); try Result := ComponentCreateFromXmlStream(S, Owner, Name); finally S.Free; end; end; function FormCreateFromXmlFile(const FileName: string; Owner: TComponent; const Name: string): TForm; var S: TStream; begin S := TFileStream.Create(FileName, fmOpenRead or fmShareDenyNone); try Result := FormCreateFromXmlStream(S, Owner, Name); finally S.Free; end; end; function FormCreateFromXmlStream(S: TStream; Owner: TComponent; const Name: string): TForm; var ADoc: TNativeXml; begin Result := nil; if not assigned(S) then exit; // Create XML document ADoc := TNativeXml.Create; try // Load XML ADoc.LoadFromStream(S); // Load from XML node Result := TForm(ComponentCreateFromXmlNode(ADoc.Root, Owner, Name)); finally ADoc.Free; end; end; function FormCreateFromXmlString(const Value: string; Owner: TComponent; const Name: string): TForm; var S: TStream; begin S := TStringStream.Create(Value); try Result := FormCreateFromXmlStream(S, Owner, Name); finally S.Free; end; end; procedure ObjectLoadFromXmlFile(AObject: TObject; const FileName: string; AParent: TComponent = nil); var S: TStream; begin S := TFileStream.Create(FileName, fmOpenRead or fmShareDenyNone); try ObjectLoadFromXmlStream(AObject, S, AParent); finally S.Free; end; end; procedure ObjectLoadFromXmlNode(AObject: TObject; ANode: TXmlNode; AParent: TComponent = nil); var AReader: TsdXmlObjectReader; begin if not assigned(AObject) or not assigned(ANode) then exit; // Create writer AReader := TsdXmlObjectReader.Create; try // Write the object to the document if AObject is TComponent then AReader.ReadComponent(ANode, TComponent(AObject), AParent) else AReader.ReadObject(ANode, AObject, AParent); finally AReader.Free; end; end; procedure ObjectLoadFromXmlStream(AObject: TObject; S: TStream; AParent: TComponent = nil); var ADoc: TNativeXml; begin if not assigned(S) then exit; // Create XML document ADoc := TNativeXml.Create; try // Load XML ADoc.LoadFromStream(S); // Load from XML node ObjectLoadFromXmlNode(AObject, ADoc.Root, AParent); finally ADoc.Free; end; end; procedure ObjectLoadFromXmlString(AObject: TObject; const Value: string; AParent: TComponent = nil); var S: TStringStream; begin S := TStringStream.Create(Value); try ObjectLoadFromXmlStream(AObject, S, AParent); finally S.Free; end; end; procedure ObjectSaveToXmlFile(AObject: TObject; const FileName: string; AParent: TComponent = nil); var S: TStream; begin S := TFileStream.Create(FileName, fmCreate); try ObjectSaveToXmlStream(AObject, S, AParent); finally S.Free; end; end; procedure ObjectSaveToXmlNode(AObject: TObject; ANode: TXmlNode; AParent: TComponent = nil); var AWriter: TsdXmlObjectWriter; begin if not assigned(AObject) or not assigned(ANode) then exit; // Create writer AWriter := TsdXmlObjectWriter.Create; try // Write the object to the document if AObject is TComponent then AWriter.WriteComponent(ANode, TComponent(AObject), AParent) else begin ANode.Name := UTF8String(AObject.ClassName); AWriter.WriteObject(ANode, AObject, AParent); end; finally AWriter.Free; end; end; procedure ObjectSaveToXmlStream(AObject: TObject; S: TStream; AParent: TComponent = nil); var ADoc: TNativeXml; begin if not assigned(S) then exit; // Create XML document ADoc := TNativeXml.Create; try ADoc.XmlFormat := xfReadable; // Save to XML node ObjectSaveToXmlNode(AObject, ADoc.Root, AParent); // Save to stream ADoc.SaveToStream(S); finally ADoc.Free; end; end; function ObjectSaveToXmlString(AObject: TObject; AParent: TComponent = nil): string; var S: TStringStream; begin S := TStringStream.Create(''); try ObjectSaveToXmlStream(AObject, S, AParent); Result := S.DataString; finally S.Free; end; end; procedure ComponentSaveToXmlFile(AComponent: TComponent; const FileName: string; AParent: TComponent = nil); begin ObjectSaveToXmlFile(AComponent, FileName, AParent); end; procedure ComponentSaveToXmlNode(AComponent: TComponent; ANode: TXmlNode; AParent: TComponent = nil); begin ObjectSaveToXmlNode(AComponent, ANode, AParent); end; procedure ComponentSaveToXmlStream(AComponent: TComponent; S: TStream; AParent: TComponent = nil); begin ObjectSaveToXmlStream(AComponent, S, AParent); end; function ComponentSaveToXmlString(AComponent: TComponent; AParent: TComponent = nil): string; begin Result := ObjectSaveToXmlString(AComponent, AParent); end; procedure FormSaveToXmlFile(AForm: TForm; const FileName: string); begin ComponentSaveToXmlFile(AForm, FileName, AForm); end; procedure FormSaveToXmlStream(AForm: TForm; S: TStream); begin ComponentSaveToXmlStream(AForm, S, AForm); end; function FormSaveToXmlString(AForm: TForm): string; begin Result := ComponentSaveToXmlString(AForm, AForm); end; { TsdXmlObjectWriter } procedure TsdXmlObjectWriter.WriteComponent(ANode: TXmlNode; AComponent, AParent: TComponent); begin if not assigned(ANode) or not assigned(AComponent) then exit; ANode.Name := UTF8String(AComponent.ClassName); if length(AComponent.Name) > 0 then ANode.AttributeAdd('Name', UTF8String(AComponent.Name)); WriteObject(ANode, AComponent, AParent); end; procedure TsdXmlObjectWriter.WriteObject(ANode: TXmlNode; AObject: TObject; AParent: TComponent); var i, Count: Integer; PropInfo: PPropInfo; PropList: PPropList; S: TStringStream; AWriter: TWriter; AChildNode: TXmlNode; AComponentNode: TXmlNode; begin if not assigned(ANode) or not assigned(AObject) then exit; // If this is a component, store child components if AObject is TComponent then with TComponent(AObject) do begin if ComponentCount > 0 then begin AChildNode := ANode.NodeNew('Components'); for i := 0 to ComponentCount - 1 do begin AComponentNode := AChildNode.NodeNew(UTF8String(Components[i].ClassName)); if length(Components[i].Name) > 0 then AComponentNode.AttributeAdd('Name', UTF8String(Components[i].Name)); WriteObject(AComponentNode, Components[i], TComponent(AObject)); end; end; end; // Save all regular properties that need storing Count := GetTypeData(AObject.ClassInfo)^.PropCount; if Count > 0 then begin GetMem(PropList, Count * SizeOf(Pointer)); try GetPropInfos(AObject.ClassInfo, PropList); for i := 0 to Count - 1 do begin PropInfo := PropList^[i]; if PropInfo = nil then continue; if IsStoredProp(AObject, PropInfo) then WriteProperty(ANode, AObject, AParent, PropInfo); end; finally FreeMem(PropList, Count * SizeOf(Pointer)); end; end; // If this is a collection, save collection items if AObject is TCollection then with TCollection(AObject) do begin if Count > 0 then begin for i := 0 to Count - 1 do begin AChildNode := ANode.NodeNew(UTF8String(Items[i].ClassName)); WriteObject(AChildNode, Items[i]); end; end; end; // Save defined properties if AObject is TPersistent then begin S := TStringStream.Create(''); try AWriter := TWriter.Create(S, 4096); try TPersistentAccess(AObject).DefineProperties(AWriter); finally AWriter.Free; end; // Do we have data from DefineProperties? if S.Size > 0 then begin // Yes, add a node with binary data ANode.NodeNew('DefinedProperties').BinaryString := RawByteString(S.DataString); end; finally S.Free; end; end; end; procedure TsdXmlObjectWriter.WriteProperty(ANode: TXmlNode; AObject: TObject; AParent: TComponent; PropInfo: PPropInfo); var PropType: PTypeInfo; AChildNode: TXmlNode; ACollectionNode: TXmlNode; //local function PropName: UTF8String; begin {$IFDEF UNICODE} Result := UTF8string(PropInfo.Name); {$ELSE} Result := AnsiToUtf8(PropInfo.Name); {$ENDIF} end; //local procedure WritePropName; begin AChildNode := ANode.NodeNew(PropName); end; //local procedure WriteInteger(Value: Int64); begin AChildNode.ValueAsString := UTF8String(IntToStr(Value)); end; //local procedure WriteString(Value: string); begin AChildNode.ValueAsUnicodeString := Value; end; //local procedure WriteSet(Value: Longint); var I: Integer; BaseType: PTypeInfo; S, Enum: string; begin BaseType := GetTypeData(PropType)^.CompType^; for i := 0 to SizeOf(TIntegerSet) * 8 - 1 do begin if i in TIntegerSet(Value) then begin Enum := GetEnumName(BaseType, i); if i > 0 then S := S + ',' + Enum else S := Enum; end; end; AChildNode.ValueAsString := UTF8String(Format('[%s]', [S])); end; //local procedure WriteIntProp(IntType: PTypeInfo; Value: Longint); var Ident: string; IntToIdent: TIntToIdent; begin IntToIdent := FindIntToIdent(IntType); if Assigned(IntToIdent) and IntToIdent(Value, Ident) then WriteString(Ident) else WriteInteger(Value); end; //local procedure WriteCollectionProp(Collection: TCollection); var i: integer; begin if assigned(Collection) then begin for i := 0 to Collection.Count - 1 do begin ACollectionNode := AChildNode.NodeNew(UTF8String(Collection.Items[i].ClassName)); WriteObject(ACollectionNode, Collection.Items[I], AParent); end; end; end; //local procedure WriteOrdProp; var Value: Longint; begin Value := GetOrdProp(AObject, PropInfo); if not (Value = PPropInfo(PropInfo)^.Default) then begin WritePropName; case PropType^.Kind of tkInteger: WriteIntProp(PPropInfo(PropInfo)^.PropType^, Value); tkChar: WriteString(Chr(Value)); tkSet: WriteSet(Value); tkEnumeration: WriteString(GetEnumName(PropType, Value)); end; end; end; //local procedure WriteFloatProp; var Value: Extended; begin Value := GetFloatProp(AObject, PropInfo); {--- VO 09-02-2011: uitgezet omdat we ook 0 weggeschreven willen hebben. ---} // if not (Value = 0) then ANode.WriteFloat(PropName, Value); end; //local procedure WriteInt64Prop; var Value: Int64; begin Value := GetInt64Prop(AObject, PropInfo); {--- VO 09-02-2011: uitgezet omdat we ook 0 weggeschreven willen hebben. ---} // if not (Value = 0) then ANode.WriteInt64(PropName, Value); end; //local procedure WriteStrProp; var Value: string; begin Value := GetStrProp(AObject, PropInfo); {--- VO 09-02-2011: uitgezet omdat we ook 0 weggeschreven willen hebben. ---} // if not (length(Value) = 0) then ANode.WriteUnicodeString(PropName, Value); end; //local procedure WriteWideStrProp; var Value: WideString; begin Value := GetWideStrProp(AObject, PropInfo); {--- VO 09-02-2011: uitgezet omdat we ook 0 weggeschreven willen hebben. ---} // if not (length(Value) = 0) then ANode.WriteUnicodeString(PropName, Value); end; {$IFDEF D12UP} //local procedure WriteUnicodeStrProp; var Value: UnicodeString; begin Value := GetUnicodeStrProp(AObject, PropInfo); {--- VO 09-02-2011: uitgezet omdat we ook 0 weggeschreven willen hebben. ---} // if not (length(Value) = 0) then ANode.WriteUnicodeString(PropName, Value); end; {$ENDIF} //local procedure WriteObjectProp; var Value: TObject; ComponentName: string; function GetComponentName(Component: TComponent): string; begin if Component.Owner = AParent then Result := Component.Name else if Component = AParent then Result := 'Owner' else if assigned(Component.Owner) and (length(Component.Owner.Name) > 0) and (length(Component.Name) > 0) then Result := Component.Owner.Name + '.' + Component.Name else if length(Component.Name) > 0 then Result := Component.Name + '.Owner' else Result := ''; end; begin Value := TObject(GetOrdProp(AObject, PropInfo)); if not assigned(Value) then exit; WritePropName; if Value is TComponent then begin ComponentName := GetComponentName(TComponent(Value)); if length(ComponentName) > 0 then WriteString(ComponentName); end else begin AChildNode.AttributeAdd('Class', UTF8String(Value.ClassName)); if AObject is TComponent then begin WriteObject(AChildNode, Value, TComponent(AObject)); end else begin WriteObject(AChildNode, Value, AParent); end; // No need to store an empty child.. so check and remove if AChildNode.NodeCount = 0 then ANode.NodeRemove(AChildNode); end; end; //local procedure WriteMethodProp; var Value: TMethod; function IsDefaultValue: Boolean; begin Result := (Value.Code = nil) or ((Value.Code <> nil) and assigned(AParent) and (AParent.MethodName(Value.Code) = '')); end; begin Value := GetMethodProp(AObject, PropInfo); if not IsDefaultValue then begin if assigned(Value.Code) then begin WritePropName; if assigned(AParent) then WriteString(AParent.MethodName(Value.Code)) else AChildNode.ValueAsString := '???'; end; end; end; //local procedure WriteVariantProp; var AValue: Variant; ACurrency: Currency; var VType: Integer; begin AValue := GetVariantProp(AObject, PropInfo); if not VarIsEmpty(AValue) or VarIsNull(AValue) then begin if VarIsArray(AValue) then raise ENativeXmlObjectStorage.Create(sxwIllegalVarType); WritePropName; VType := VarType(AValue); AChildNode.AttributeAdd('VarType', UTF8String(IntToHex(VType, 4))); case VType and varTypeMask of varNull: AChildNode.ValueAsUnicodeString := ''; varOleStr: AChildNode.ValueAsUnicodeString := AValue; varString: AChildNode.ValueAsUnicodeString := AValue; varByte, varSmallInt, varInteger: AChildNode.ValueAsInteger := AValue; varSingle, varDouble: AChildNode.ValueAsFloat := AValue; varCurrency: begin ACurrency := AValue; AChildNode.BufferWrite(ACurrency, SizeOf(ACurrency)); end; varDate: AChildNode.ValueAsDateTime := AValue; varBoolean: AChildNode.ValueAsBool := AValue; else try ANode.ValueAsUnicodeString := AValue; except raise ENativeXmlObjectStorage.Create(sxwIllegalVarType); end; end;//case end; end; //main begin // if (PPropInfo(PropInfo)^.SetProc <> nil) and // (PPropInfo(PropInfo)^.GetProc <> nil) then {--- MCO 11-04-2011: Property alleen opslaan als het zowel read als write is, behalve bij object properties; die ook opslaan als ze alleen read zijn ---} if (PPropInfo(PropInfo)^.GetProc <> nil) and ((PPropInfo(PropInfo)^.SetProc <> nil) or (PPropInfo(PropInfo)^.PropType^.Kind = tkClass)) then begin PropType := PPropInfo(PropInfo)^.PropType^; case PropType^.Kind of tkInteger, tkChar, tkEnumeration, tkSet: WriteOrdProp; tkFloat: WriteFloatProp; tkString, tkLString: WriteStrProp; {$IFDEF D6UP} tkWString: WriteWideStrProp; {$ENDIF} {$IFDEF D12UP} tkUString: WriteUnicodeStrProp; {$ENDIF} tkClass: WriteObjectProp; tkMethod: WriteMethodProp; tkVariant: WriteVariantProp; tkInt64: WriteInt64Prop; end; end; end; { TsdXmlObjectReader } function TsdXmlObjectReader.CreateComponent(ANode: TXmlNode; AOwner, AParent: TComponent; AName: string): TComponent; var AClass: TComponentClass; begin AClass := TComponentClass(GetClass(string(ANode.Name))); if not assigned(AClass) then raise ENativeXmlObjectStorage.CreateFmt(sxrUnregisteredClassType, [ANode.Name]); Result := AClass.Create(AOwner); if length(AName) = 0 then Result.Name := string(ANode.AttributeByName['Name']) else Result.Name := AName; if not assigned(AParent) then AParent := Result; ReadComponent(ANode, Result, AParent); end; procedure TsdXmlObjectReader.ReadComponent(ANode: TXmlNode; AComponent, AParent: TComponent); begin ReadObject(ANode, AComponent, AParent); end; procedure TsdXmlObjectReader.ReadObject(ANode: TXmlNode; AObject: TObject; AParent: TComponent); var i, Count: Integer; Item: TCollectionItem; PropInfo: PPropInfo; PropList: PPropList; S: TStringStream; AReader: TReader; AChildNode: TXmlNode; AComponentNode: TXmlNode; AClass: TComponentClass; AComponent: TComponent; ChildNodes: TList; begin if not assigned(ANode) or not assigned(AObject) then exit; // Start loading if AObject is TComponent then with TComponentAccess(AObject) do begin TComponentAccess(AObject).Updating; SetComponentState(ComponentState + [csLoading, csReading]); end; try // Load all loadable regular properties Count := GetTypeData(AObject.ClassInfo)^.PropCount; if Count > 0 then begin GetMem(PropList, Count * SizeOf(Pointer)); try GetPropInfos(AObject.ClassInfo, PropList); for i := 0 to Count - 1 do begin PropInfo := PropList^[i]; if PropInfo = nil then continue; if IsStoredProp(AObject, PropInfo) then ReadProperty(ANode, AObject, AParent, PropInfo); end; finally FreeMem(PropList, Count * SizeOf(Pointer)); end; end; // If this is a component, load child components if AObject is TComponent then with TComponent(AObject) do begin AChildNode := ANode.NodeByName('Components'); if assigned(AChildNode) then begin for i := 0 to AChildNode.NodeCount - 1 do begin AComponentNode := AChildNode.Nodes[i]; AComponent := FindComponent(string(AComponentNode.AttributeByName['Name'])); if not assigned(AComponent) then begin AClass := TComponentClass(GetClass(string(AComponentNode.Name))); if not assigned(AClass) then raise ENativeXmlObjectStorage.Create(sxrUnregisteredClassType); AComponent := AClass.Create(TComponent(AObject)); AComponent.Name := string(AComponentNode.AttributeByName['Name']); // In case of new (visual) controls we set the parent if (AComponent is TControl) and (AObject is TWinControl) then TControl(AComponent).Parent := TWinControl(AObject); end; ReadComponent(AComponentNode, AComponent, TComponent(AObject)); end; end; end; // If this is a collection, load collections items if AObject is TCollection then with TCollection(AObject) do begin BeginUpdate; try Clear; ChildNodes := TList.Create; try ANode.FindNodes(UTF8String(ItemClass.ClassName), ChildNodes); for i := 0 to ChildNodes.Count - 1 do begin item := Add; ReadObject(TXmlNode(ChildNodes[i]), item, AParent); end; finally ChildNodes.Free; end; finally EndUpdate; end; end; // Load defined properties if AObject is TPersistent then begin AChildNode := ANode.NodeByName('DefinedProperties'); if assigned(AChildNode) then begin S := TStringStream.Create(AChildNode.BinaryString); try AReader := TReader.Create(S, 4096); try with TReaderAccess(AReader) do while Position < S.Size do ReadProperty(TPersistent(AObject)); finally AReader.Free; end; finally S.Free; end; end; end; finally // End loading if AObject is TComponent then with TComponentAccess(AObject) do begin SetComponentState(ComponentState - [csReading]); TComponentAccess(AObject).Loaded; TComponentAccess(AObject).Updated; end; end; end; procedure TsdXmlObjectReader.ReadProperty(ANode: TXmlNode; AObject: TObject; AParent: TComponent; PropInfo: PPropInfo); var PropType: PTypeInfo; AChildNode: TXmlNode; Method: TMethod; PropObject: TObject; //local procedure SetSetProp(const AValue: string); var S: string; P: integer; ASet: integer; EnumType: PTypeInfo; procedure AddToEnum(const EnumName: string); var V: integer; begin if length(EnumName) = 0 then exit; V := GetEnumValue(EnumType, EnumName); if V = -1 then raise ENativeXmlObjectStorage.Create(sxrInvalidPropertyValue); Include(TIntegerSet(ASet), V); end; begin ASet := 0; EnumType := GetTypeData(PropType)^.CompType^; S := copy(AValue, 2, length(AValue) - 2); repeat P := Pos(',', S); if P > 0 then begin AddToEnum(copy(S, 1, P - 1)); S := copy(S, P + 1, length(S)); end else begin AddToEnum(S); break; end; until False; SetOrdProp(AObject, PropInfo, ASet); end; procedure SetIntProp(const AValue: string); var V: Longint; IdentToInt: TIdentToInt; begin IdentToInt := FindIdentToInt(PropType); if Assigned(IdentToInt) and IdentToInt(AValue, V) then SetOrdProp(AObject, PropInfo, V) else SetOrdProp(AObject, PropInfo, StrToInt(AValue)); end; procedure SetCharProp(const AValue: string); begin if length(AValue) <> 1 then raise ENativeXmlObjectStorage.Create(sxrInvalidPropertyValue); SetOrdProp(AObject, PropInfo, Ord(AValue[1])); end; procedure SetEnumProp(const AValue: string); var V: integer; begin V := GetEnumValue(PropType, AValue); if V = -1 then raise ENativeXmlObjectStorage.Create(sxrInvalidPropertyValue); SetOrdProp(AObject, PropInfo, V) end; procedure ReadCollectionProp(ACollection: TCollection); var i: integer; Item: TPersistent; begin ACollection.BeginUpdate; try ACollection.Clear; for i := 0 to AChildNode.NodeCount - 1 do begin Item := ACollection.Add; ReadObject(AChildNode.Nodes[i], Item, AParent); end; finally ACollection.EndUpdate; end; end; procedure SetObjectProp(const AValue: string); var AClassName: string; PropObject: TObject; Reference: TComponent; begin if AChildNode.HasAttribute('Class') then begin // Persistent class AClassName := string(AChildNode.AttributeByName['Class']); PropObject := TObject(GetOrdProp(AObject, PropInfo)); if assigned(PropObject) and (PropObject.ClassName = AClassName) then begin ReadObject(AChildNode, PropObject, AParent); {--- MCO 11-04-2011: ReadObject leest het volledige object uit, inclusief de CollectionItems; onderstaande code is dus niet nodig. ---} // if PropObject is TCollection then // ReadCollectionProp(TCollection(PropObject)) // else if AObject is TComponent then begin // ReadObject(AChildNode, PropObject, TComponent(AObject)) // end; end else begin if Assigned(PropObject) then begin // The object property is not of the expected type raise ENativeXmlObjectStorage.CreateFmt('Expected %s object. Could not populate %s object property', [AClassName, PropObject.ClassName]); end else begin raise ENativeXmlObjectStorage.CreateFmt('Expected %s object. Could not populate nil object property', [AClassName]); end; end; end else if Length(AValue) = 0 then begin exit; end else begin // Component reference if assigned(AParent) then begin Reference := FindNestedComponent(AParent, AValue); SetOrdProp(AObject, PropInfo, Longint(Reference)); end; end; end; procedure SetMethodProp(const AValue: string); var Method: TMethod; begin // to do: add OnFindMethod if not assigned(AParent) then exit; Method.Code := AParent.MethodAddress(AValue); if not assigned(Method.Code) then raise ENativeXmlObjectStorage.Create(sxwInvalidMethodName); Method.Data := AParent; TypInfo.SetMethodProp(AObject, PropInfo, Method); end; procedure SetVariantProp(const AValue: string); var VType: integer; Value: Variant; ACurrency: Currency; begin VType := StrToInt(string('$' + AChildNode.AttributeByName['VarType'])); case VType and varTypeMask of varNull: Value := Null; varOleStr: Value := AChildNode.ValueAsUnicodeString; varString: Value := AChildNode.ValueAsString; varByte, varSmallInt, varInteger: Value := AChildNode.ValueAsInteger; varSingle, varDouble: Value := AChildNode.ValueAsFloat; varCurrency: begin AChildNode.BufferRead(ACurrency, SizeOf(ACurrency)); Value := ACurrency; end; varDate: Value := AChildNode.ValueAsDateTime; varBoolean: Value := AChildNode.ValueAsBool; else try Value := ANode.ValueAsString; except raise ENativeXmlObjectStorage.Create(sxwIllegalVarType); end; end;//case TVarData(Value).VType := VType; TypInfo.SetVariantProp(AObject, PropInfo, Value); end; begin // if (PPropInfo(PropInfo)^.SetProc <> nil) and // (PPropInfo(PropInfo)^.GetProc <> nil) then {--- MCO 11-04-2011: Property alleen opslaan als het zowel read als write is, behalve bij object properties; die ook opslaan als ze alleen read zijn ---} if (PPropInfo(PropInfo)^.GetProc <> nil) and ((PPropInfo(PropInfo)^.SetProc <> nil) or (PPropInfo(PropInfo)^.PropType^.Kind = tkClass)) then begin PropType := PPropInfo(PropInfo)^.PropType^; {$IFDEF UNICODE} AChildNode := ANode.NodeByName(UTF8String(PropInfo.Name)); {$ELSE} AChildNode := ANode.NodeByName(AnsiToUtf8(PropInfo.Name)); {$ENDIF} if assigned(AChildNode) then begin // Non-default values from XML try case PropType^.Kind of tkInteger: SetIntProp(string(AChildNode.ValueAsString)); tkChar: SetCharProp(string(AChildNode.ValueAsString)); tkSet: SetSetProp(string(AChildNode.ValueAsString)); tkEnumeration: SetEnumProp(string(AChildNode.ValueAsString)); tkFloat: SetFloatProp(AObject, PropInfo, AChildNode.ValueAsFloat); tkString, tkLString: SetStrProp(AObject, PropInfo, string(AChildNode.ValueAsString)); {$IFNDEF D12UP} tkWString: SetWideStrProp(AObject, PropInfo, UTF8Decode(AChildNode.ValueAsUnicodeString)); {$ELSE} tkWString: SetWideStrProp(AObject, PropInfo, UTF8ToWideString(RawByteString(AChildNode.ValueAsUnicodeString))); tkUString: SetUnicodeStrProp(AObject, PropInfo, AChildNode.ValueAsUnicodeString); {$ENDIF} tkClass: SetObjectProp(string(AChildNode.ValueAsString)); tkMethod: SetMethodProp(string(AChildNode.ValueAsString)); tkVariant: SetVariantProp(string(AChildNode.ValueAsString)); tkInt64: SetInt64Prop(AObject, PropInfo, AChildNode.ValueAsInt64); end;//case except on E: Exception do begin if (E is ENativeXmlObjectStorage) and Assigned(E.InnerException) then begin raise; end else begin Exception.RaiseOuterException(ENativeXmlObjectStorage.CreateFmt('%s at %s', [E.Message, XPathFromNode(AChildNode)])); end; end; end; end else begin // Set Default value try case PropType^.Kind of tkInteger: SetOrdProp(AObject, PropInfo, PPropInfo(PropInfo)^.Default); tkChar: SetOrdProp(AObject, PropInfo, PPropInfo(PropInfo)^.Default); tkSet: SetOrdProp(AObject, PropInfo, PPropInfo(PropInfo)^.Default); tkEnumeration: SetOrdProp(AObject, PropInfo, PPropInfo(PropInfo)^.Default); tkFloat: SetFloatProp(AObject, PropInfo, 0); tkString, tkLString, tkWString: SetStrProp(AObject, PropInfo, ''); {$IFDEF D12UP} tkUString: SetStrProp(AObject, PropInfo, ''); {$ENDIF} tkClass: begin PropObject := TObject(GetOrdProp(AObject, PropInfo)); if PropObject is TComponent then SetOrdProp(AObject, PropInfo, 0); end; tkMethod: begin Method := TypInfo.GetMethodProp(AObject, PropInfo); Method.Code := nil; TypInfo.SetMethodProp(AObject, PropInfo, Method); end; tkInt64: SetInt64Prop(AObject, PropInfo, 0); end;//case except on E: Exception do begin if (E is ENativeXmlObjectStorage) and Assigned(E.InnerException) then begin raise; end else begin Exception.RaiseOuterException(ENativeXmlObjectStorage.CreateFmt('%s while reading property %s at %s', [E.Message, PPropInfo(PropInfo)^.Name, XPathFromNode(ANode)])); end; end; end{try}; end; end; end; { TComponentAccess } procedure TComponentAccess.SetComponentState(const AState: TComponentState); type PInteger = ^integer; var PSet: PInteger; AInfo: PPropInfo; begin // This is a "severe" hack in order to set a non-writable property value, // also using RTTI PSet := PInteger(@AState); AInfo := GetPropInfo(TComponentAccess, 'ComponentState'); if assigned(AInfo.GetProc) then PInteger(Integer(Self) + Integer(AInfo.GetProc) and $00FFFFFF)^ := PSet^; end; { ------------------------------------------------------------------------------------------------ } function XPathFromNode(ANode: TXmlNode): string; var Node: TXmlNode; i, Index: Integer; begin if Assigned(ANode) then begin Result := string(ANode.Name); Node := ANode.Parent; while Assigned(Node) do begin Index := 0; for i := Node.IndexInParent - 1 downto 0 do begin if Node.Parent.Nodes[i].Name = Node.Name then begin Inc(Index); end; end; if Index > 0 then begin Result := Format('%s[%d]/%s', [Node.Name, Index + 1, Result]); end else begin Result := string(Node.Name) + '/' + Result; end; Node := Node.Parent; end; end else begin Result := ''; end; end {XPathFromNode}; end. |
Added DAT2ICS/src/lib/NativeXml/NativeXmlXPath.pas.
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interface uses Classes, {$IFDEF DGMRLib} L_IdList, {$ENDIF} NativeXml; type TXmlNodeHelper = class helper for TXmlNode private function ProcessXPath(const StartNode: TXmlNode; XPath: string; const ResultNodes: TList; const StopWhenFound: Boolean): Integer; function GetXML: string; public function CountNodes(const XPath: string): Integer; function SelectNode(XPath: string): TXmlNode; function SelectNodes(const XPath: string): TXmlNodeList; overload; function SelectNodes(XPath: string; const Nodes: TList): Integer; overload; function AsBoolean(const Default: Boolean = False): Boolean; function AsDateTime(const Default: TDateTime = 0): TDateTime; function AsFloat(const Default: Extended = 0.0): Extended; {$IFDEF DGMRLib} function AsDoubleList(const Default: Double = 0.0): TDoubleList; {$ENDIF} function AsInteger(const Default: Integer = 0): Integer; function AsInt64(const Default: Int64 = 0): Int64; function AsString(const Default: string = ''): string; function AsUTF8String(const Default: UTF8String = ''): UTF8String; property XML: string read GetXML; end; TNativeXmlHelper = class helper for TNativeXml public function CountNodes(const XPath: string): Integer; function SelectNode(const XPath: string): TXmlNode; function SelectNodes(const XPath: string): TXmlNodeList; overload; function SelectNodes(const XPath: string; const Nodes: TList): Integer; overload; end; implementation uses Windows, SysUtils; { ================================================================================================ } { TXmlNodeHelper } { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.AsBoolean(const Default: Boolean): Boolean; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} if not Assigned(Self) then Exit(Default); Result := Self.ValueAsBoolDef(Default); end {TXmlNodeHelper.AsBoolean}; { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.AsDateTime(const Default: TDateTime): TDateTime; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} if not Assigned(Self) then Exit(Default); Result := Self.ValueAsDateTimeDef(Default); end {TXmlNodeHelper.AsDateTime}; { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.AsFloat(const Default: Extended): Extended; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} if not Assigned(Self) then Exit(Default); Result := Self.ValueAsFloatDef(Default); end {TXmlNodeHelper.AsFloat}; {$IFDEF DGMRLib} { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.AsDoubleList(const Default: Double): TDoubleList; var Values: TStringList; i: Integer; XMLFS: TFormatSettings; Value: Double; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} Result := TDoubleList.Create; if not Assigned(Self) then Exit; try Values := TStringList.Create; try Values.Delimiter := ' '; Values.StrictDelimiter := True; Values.DelimitedText := Self.AsString; XMLFS.ThousandSeparator := ','; XMLFS.DecimalSeparator := '.'; for i := 0 to Values.Count - 1 do begin if TryStrToFloat(Values[i], Value, XMLFS) then begin Result.Add(Value); end else begin Result.Add(Default); end; end; finally Values.Free; end; except FreeAndNil(Result); raise; end; end {TXmlNodeHelper.AsDoubleList}; {$ENDIF} { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.AsInt64(const Default: Int64): Int64; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} if not Assigned(Self) then Exit(Default); Result := Self.ValueAsInt64Def(Default); end {TXmlNodeHelper.AsInt64}; { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.AsInteger(const Default: Integer): Integer; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} if not Assigned(Self) then Exit(Default); Result := Self.ValueAsIntegerDef(Default); end {TXmlNodeHelper.AsInteger}; { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.AsString(const Default: string): string; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} if not Assigned(Self) then Exit(Default); Result := Self.ValueAsUnicodeString; end {TXmlNodeHelper.AsString}; { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.AsUTF8String(const Default: UTF8String): UTF8String; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} if not Assigned(Self) then Exit(Default); Result := Self.ValueAsString; end {TXmlNodeHelper.AsString}; { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.ProcessXPath(const StartNode: TXmlNode; XPath: string; const ResultNodes: TList; const StopWhenFound: Boolean): Integer; var Recursive: boolean; SlashPos: Integer; NodeName: string; i: Integer; Child: TXmlNode; NodesToSearch: TList; label FindFirstSlash; begin Result := 0; Recursive := False; FindFirstSlash: SlashPos := Pos('/', XPath); case SlashPos of 0: begin // no slash present NodeName := XPath; XPath := ''; end; 1: begin // starting with a slash; this was '//' Recursive := True; XPath := Copy(XPath, 2); goto FindFirstSlash; end; else begin NodeName := Copy(XPath, 1, SlashPos - 1); XPath := Copy(XPath, SlashPos + 1); end; end; if (NodeName = '') and (XPath = '') then begin if Assigned(ResultNodes) then ResultNodes.Add(StartNode); Result := 1; Exit; end else if NodeName = '.' then begin Assert(not Recursive, 'The expression "//." is not supported.'); Result := Result + ProcessXPath(StartNode, XPath, ResultNodes, StopWhenFound); if StopWhenFound and (Result > 0) then Exit; end else if NodeName = '..' then begin Assert(not Recursive, 'The expression "//.." is not supported.'); Result := Result + ProcessXPath(StartNode.Parent, XPath, ResultNodes, StopWhenFound); if StopWhenFound and (Result > 0) then Exit; end else if NodeName = '*' then begin Assert(not Recursive, 'The expression "//*" is not supported.'); NodeName := ''; end; if Recursive then begin NodesToSearch := TList.Create; try StartNode.FindNodes(UTF8String(NodeName), NodesToSearch); for i := 0 to NodesToSearch.Count - 1 do begin Child := NodesToSearch[i]; Result := Result + ProcessXPath(Child, XPath, ResultNodes, StopWhenFound); if StopWhenFound and (Result > 0) then Exit; end; finally NodesToSearch.Free; end; end else begin for i := 0 to StartNode.NodeCount - 1 do begin Child := StartNode.Nodes[i]; if (NodeName = '') or (string(Child.Name) = NodeName) then begin Result := Result + ProcessXPath(Child, XPath, ResultNodes, StopWhenFound); if StopWhenFound and (Result > 0) then Exit; end; end; end; end {TXmlNodeHelper.ProcessXPath}; { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.SelectNode(XPath: string): TXmlNode; var Nodes: TList; SlashPos: integer; NodeName: string; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} if not Assigned(Self) then Exit(nil); Nodes := TList.Create; try if Copy(XPath, 1, 1) = '/' then begin XPath := Copy(XPath, 2); SlashPos := Pos('/', XPath); if SlashPos = 0 then begin NodeName := XPath; XPath := ''; end else begin NodeName := Copy(XPath, 1, SlashPos - 1); XPath := Copy(XPath, SlashPos + 1); end; if (NodeName = string(Self.Document.Root.Name)) or (NodeName = '*') then begin if XPath = '' then begin Nodes.Add(Self.Document.Root); end else begin ProcessXPath(Self.Document.Root, XPath, Nodes, True); end; end else begin Result := nil; end; end else begin ProcessXPath(Self, XPath, Nodes, True); end; if Nodes.Count > 0 then Result := TXmlNode(Nodes[0]) else Result := nil; finally Nodes.Free; end; end {TXmlNodeHelper.SelectNode}; { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.CountNodes(const XPath: string): Integer; begin Result := SelectNodes(XPath, nil); end {TXmlNodeHelper.CountNodes}; { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.SelectNodes(const XPath: string): TXmlNodeList; begin Result := TXmlNodeList.Create; SelectNodes(XPath, Result); end {TXmlNodeHelper.SelectNodes}; { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.SelectNodes(XPath: string; const Nodes: TList): Integer; var SlashPos: integer; NodeName: string; DisparateNodes: TXmlNodeList; i: Integer; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} if not Assigned(Self) then Exit(0); if Copy(XPath, 1, 1) = '/' then begin XPath := Copy(XPath, 2); SlashPos := Pos('/', XPath); if SlashPos = 0 then begin NodeName := XPath; XPath := ''; end else begin NodeName := Copy(XPath, 1, SlashPos - 1); XPath := Copy(XPath, SlashPos + 1); end; if (NodeName = string(Self.Document.Root.Name)) or (NodeName = '*') then begin if XPath = '' then begin Nodes.Add(Self.Document.Root); Result := 1; end else begin Result := ProcessXPath(Self.Document.Root, XPath, Nodes, False); end; end else if (NodeName = '') and (XPath <> '') then begin {--- MCO 10-08-2012: Het zoekpad bevatte //; we achterhalen nu de naam van de volgende node, en gaan op zoek naar alle nodes die zo heten. ---} SlashPos := Pos('/', XPath); if SlashPos = 0 then begin NodeName := XPath; XPath := ''; end else begin NodeName := Copy(XPath, 1, SlashPos - 1); XPath := Copy(XPath, SlashPos + 1); end; Result := 0; DisparateNodes := TXmlNodeList.Create; try Self.FindNodes(UTF8String(NodeName), DisparateNodes); for i := 0 to DisparateNodes.Count - 1 do begin Result := Result + ProcessXPath(DisparateNodes[i], XPath, Nodes, False); end; finally DisparateNodes.Free; end; end else begin Result := 0; end; end else begin Result := ProcessXPath(Self, XPath, Nodes, False); end; end {TXmlNodeHelper.SelectNodes}; { ------------------------------------------------------------------------------------------------ } function TXmlNodeHelper.GetXML: string; begin Result := string(Self.WriteToString); end {TXmlNodeHelper.GetXML}; { ================================================================================================ } { TNativeXmlHelper } { ------------------------------------------------------------------------------------------------ } function TNativeXmlHelper.CountNodes(const XPath: string): Integer; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} if Assigned(Self) then Result := Self.Root.CountNodes(XPath) else Result := 0; end {TNativeXmlHelper.CountNodes}; { ------------------------------------------------------------------------------------------------ } function TNativeXmlHelper.SelectNode(const XPath: string): TXmlNode; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} if Assigned(Self) then Result := Self.Root.SelectNode(XPath) else Result := nil; end {TNativeXmlHelper.SelectNode}; { ------------------------------------------------------------------------------------------------ } function TNativeXmlHelper.SelectNodes(const XPath: string): TXmlNodeList; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} if Assigned(Self) then Result := Self.Root.SelectNodes(XPath) else Result := TXmlNodeList.Create; end {TNativeXmlHelper.SelectNodes}; { ------------------------------------------------------------------------------------------------ } function TNativeXmlHelper.SelectNodes(const XPath: string; const Nodes: TList): Integer; begin {$IFDEF DEBUG} if not Assigned(Self) then OutputDebugString('NIL NODE REQUESTED'); {$ENDIF} if Assigned(Self) then Result := Self.Root.SelectNodes(XPath, Nodes) else Result := 0; end {TNativeXmlHelper.SelectNodes}; end. |