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SimpleXML.pas
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{************************************************************
SimpleXML - Áèáëèîòåêà äëÿ ñèíòàêñè÷åñêîãî ðàçáîðà òåêñòîâ XML
è ïðåîáðàçîâàíèÿ â èåðàðõèþ XML-îáúåêòîâ.
È íàîáîðîò: ìîæíî ñôîðìèðîâàòü èåðàðõèþ XML-îáúåêòîâ, è
óæå èç íåå ïîëó÷èòü òåêñò XML.
Äîñòîéíàÿ çàìåíà äëÿ MSXML. Ïðè èñïîëüçîâàíèè Ansi-ñòðîê
ðàáîòàåò áûñòðåå è êóøàåò ìåíüøå ïàìÿòè.
(ñ) Àâòîðñêèå ïðàâà 2002,2003 Ìèõàèë Âëàñîâ.
Áèáëèîòåêà áåñïëàòíàÿ è ìîæåò áûòü èñïîëüçîâàíà ïî ëþáîìó íàçíà÷åíèþ.
Ðàçðåøàåòñÿ âíåñåíèå ëþáûõ èçìåíåíèé è èñïîëüçîâàíèå èçìåíåííûõ
áèáëèîòåê áåç îãðàíè÷åíèé.
Åäèíñòâåííîå òðåáîâàíèå: Äàííûé òåêñò äîëæåí ïðèñóòñòâîâàòü
áåç èçìåíåíèé âî âñåõ ìîäèôèêàöèÿõ áèáëèîòåêè.
Âñå ïîæåëàíèÿ ïðèâåòñòâóþ ïî àäðåñó [email protected]
Òàê æå ðåêîìåíäóþ ïîñåòèòü ìîþ ñòðàíè÷êó: http://mv.rb.ru
Ê ñîæàëåíèþ, ñàéò àâòîðà êàíóë â íåáûòèå. Èñõîäíèêè ðàçìåùàþ ó ñåáÿ
íà ñàéòå http://www.kraeg.ru (Kirill Krasnov)
Æåëàþ ïðèÿòíîãî ïðîãðàììèðîâàíèÿ, Ìèõàèë Âëàñîâ.
Òåêóùàÿ âåðñèÿ: devel
*************************************************************}
unit SimpleXML;
interface
uses
Windows, SysUtils, Classes;
const
BinXmlSignatureSize = Length('< binary-xml >');
BinXmlSignature: String = '< binary-xml >';
BINXML_USE_WIDE_CHARS = 1;
BINXML_COMPRESSED = 2;
XSTR_NULL = '{{null}}';
NODE_INVALID = $00000000;
NODE_ELEMENT = $00000001;
NODE_ATTRIBUTE = $00000002;
NODE_TEXT = $00000003;
NODE_CDATA_SECTION = $00000004;
NODE_ENTITY_REFERENCE = $00000005;
NODE_ENTITY = $00000006;
NODE_PROCESSING_INSTRUCTION = $00000007;
NODE_COMMENT = $00000008;
NODE_DOCUMENT = $00000009;
NODE_DOCUMENT_TYPE = $0000000A;
NODE_DOCUMENT_FRAGMENT = $0000000B;
NODE_NOTATION = $0000000C;
type
// TXmlString - òèï ñòðîêîâûõ ïåðåìåííûõ, èñïîëüçóåìûõ â SimpleXML.
// Ìîæåò áûòü String èëè WideString.
{ $DEFINE XML_WIDE_CHARS}
{$IFDEF XML_WIDE_CHARS}
PXmlChar = PWideChar;
TXmlChar = WideChar;
TXmlString = WideString;
{$ELSE}
PXmlChar = PChar;
TXmlChar = Char;
TXmlString = String;
{$ENDIF}
IXmlDocument = interface;
IXmlElement = interface;
IXmlText = interface;
IXmlCDATASection = interface;
IXmlComment = interface;
IXmlProcessingInstruction = interface;
// IXmlBase - áàçîâûé èíòåðôåéñ äëÿ âñåõ èíòåðôåéñîâ SimpleXML.
IXmlBase = interface
// GetObject - âîçâðàùàåò ññûëêó íà îáúåêò, ðåàëèçóþùèé èíòåðôåéñ.
function GetObject: TObject;
end;
// IXmlNameTable - òàáëèöà èìåí. Êàæäîìó èìåíè ñîïîñòàâëÿåòñÿ íåêèé
// óíèêàëüíûé ÷èñëîâîé èäåíòèôèêàòîð. Èñïîëüçóåòñÿ äëÿ õðàíåíèÿ
// íàçâàíèé òýãîâ è àòðèáóòîâ.
IXmlNameTable = interface(IXmlBase)
// GetID - âîçâðàùàåò ÷èñëîâîé èäåíòèôèêàòîð óêàçàííîé ñòðîêè.
function GetID(const aName: TXmlString): Integer;
// GetID - âîçâðàùàåò ñòðîêó, ñîîòâåòñòâóþùóþ óêàçàííîìó ÷èñëîâîìó
// èäåíòèôèêàòîðó.
function GetName(anID: Integer): TXmlString;
end;
IXmlNode = interface;
TXmlCompareNodes = function(const aNode1, aNode2: IXmlNode): Integer;
// IXmlNodeList - ñïèñîê óçëîâ. Ñïèñîê îðãàíèçîâàí â âèäå ìàññèâà.
// Äîñòóï ê ýëåìåíòàì ñïèñêà ïî èíäåêñó
IXmlNodeList = interface(IXmlBase)
// Get_Count - êîëè÷åñòâî óçëîâ â ñïèñêå
function Get_Count: Integer;
// Get_Item - ïîëó÷èòü óçåë ïî èíäåêñó
function Get_Item(anIndex: Integer): IXmlNode;
// Get_XML - âîçâðàùàåò ïðåäñòàâëåíèå ýëåìåíòîâ ñïèñêà â ôîðìàòå XML
function Get_XML: TXmlString;
procedure SortElements(aCompare: TXmlCompareNodes);
function IndexOf(const aNode: IXmlNode): Integer;
procedure Add(const aNode: IXmlNode);
procedure Insert(const aNode: IXmlNode; anIndex: Integer);
function Remove(const aNode: IXmlNode): Integer;
procedure Delete(anIndex: Integer);
procedure Clear;
property Count: Integer read Get_Count;
property Item[anIndex: Integer]: IXmlNode read Get_Item; default;
property XML: TXmlString read Get_XML;
end;
// IXmlNode - óçåë XML-äåðåâà
IXmlNode = interface(IXmlBase)
function Get_SourceLine: Integer;
function Get_SourceCol: Integer;
// Get_NameTable - òàáëèöà èìåí, èñïîëüçóåìàÿ äàííûì óçëîì
function Get_NameTable: IXmlNameTable;
// Get_NodeName - âîçâðàùàåò íàçâàíèå óçëà. Èíòåðïðåòàöèÿ íàçâàíèÿ óçëà
// çàâèñèò îò åãî òèïà
function Get_NodeName: TXmlString;
// Get_NodeNameID - âîçâðàùàåò êîä íàçâàíèÿ óçëà
function Get_NodeNameID: Integer;
// Get_NodeType - âîçâðàùàåò òèï óçëà
function Get_NodeType: Integer;
// Get_Text - âîçâðàùàåò òåêñò óçëà
function Get_Text: TXmlString;
// Set_Text - èçìåíÿåò òåêñò óçëà
procedure Set_Text(const aValue: TXmlString);
// Get_DataType - âîçàðàùàåò òèï äàííûõ óçëà â òåðìèíàõ âàðèàíòîâ
function Get_DataType: Integer;
// Get_TypedValue - âîçâðàùàåò
function Get_TypedValue: Variant;
// Set_TypedValue - èçìåíÿåò òåêñò óçëà íà òèïèçèðîâàííîå çíà÷åíèå
procedure Set_TypedValue(const aValue: Variant);
// Get_XML - âîçâðàùàåò ïðåäñòàâëåíèå óçëà è âñåõ âëîæåííûõ óçëîâ
// â ôîðìàòå XML.
function Get_XML: TXmlString;
// CloneNode - ñîçäàåò òî÷íóþ êîïèþ äàííîãî óçëà
// Åñëè çàäàí ïðèçíàê aDeep, òî ñîçäàñòñÿ êîïèÿ
// âñåé âåòâè èåðàðõèè îò äàííîãî óçëà.
function CloneNode(aDeep: Boolean = True): IXmlNode;
// Get_ParentNode - âîçâðàùàåò ðîäèòåëüñêèé óçåë
function Get_ParentNode: IXmlNode;
// Get_OwnerDocument - âîçâðàùàåò XML-äîêóìåíò,
// â êîòîðîì ðàñïîëîæåí äàííûé óçåë
function Get_OwnerDocument: IXmlDocument;
function Get_NextSibling: IXmlNode;
// Get_ChildNodes - âîçâðàùàåò ñïèñîê äî÷åðíèõ óçëîâ
function Get_ChildNodes: IXmlNodeList;
// AppendChild - äîáàâëÿåò óêàçàííûé óçåë â êîíåö ñïèñêà äî÷åðíèõ óçëîâ
procedure AppendChild(const aChild: IXmlNode);
// InsertBefore - äîáàâëÿåò óêàçàííûé óçåë â óêàçàííîå ìåñòî ñïèñêà äî÷åðíèõ óçëîâ
procedure InsertBefore(const aChild, aBefore: IXmlNode);
// ReplaceChild - çàìåíÿåò óêàçàííûé óçåë äðóãèì óçëîì
procedure ReplaceChild(const aNewChild, anOldChild: IXmlNode);
// RemoveChild - óäàëÿåò óêàçàííûé óçåë èç ñïèñêà äî÷åðíèõ óçëîâ
procedure RemoveChild(const aChild: IXmlNode);
// AppendElement - ñîçäàåò ýëåìåíò è äîáàâëÿåò åãî â êîíåö ñïèñêà
// â êîíåö ñïèñêà äî÷åðíèõ îáúåêòîâ
function AppendElement(aNameID: Integer): IXmlElement; overload;
function AppendElement(const aName: TxmlString): IXmlElement; overload;
// AppendText - ñîçäàåò òåêñòîâûé óçåë è äîáàâëÿåò åãî
// â êîíåö ñïèñêà äî÷åðíèõ îáúåêòîâ
function AppendText(const aData: TXmlString): IXmlText;
// AppendCDATA - ñîçäàåò ñåêöèþ CDATA è äîáàâëÿåò åå
// â êîíåö ñïèñêà äî÷åðíèõ îáúåêòîâ
function AppendCDATA(const aData: TXmlString): IXmlCDATASection;
// AppendComment - ñîçäàåò êîììåíòàðèé è äîáàâëÿåò åãî
// â êîíåö ñïèñêà äî÷åðíèõ îáúåêòîâ
function AppendComment(const aData: TXmlString): IXmlComment;
// AppendProcessingInstruction - ñîçäàåò èíñòðóêöèþ è äîáàâëÿåò å¸
// â êîíåö ñïèñêà äî÷åðíèõ îáúåêòîâ
function AppendProcessingInstruction(aTargetID: Integer;
const aData: TXmlString): IXmlProcessingInstruction; overload;
function AppendProcessingInstruction(const aTarget: TXmlString;
const aData: TXmlString): IXmlProcessingInstruction; overload;
// GetChildText - âîçâðàùàåò çíà÷åíèå äî÷åðíåãî óçëà
// SetChildText - äîáàâëÿåò èëè èçìåíÿåò çíà÷åíèå äî÷åðíåãî óçëà
function GetChildText(const aName: TXmlString; const aDefault: TXmlString = ''): TXmlString; overload;
function GetChildText(aNameID: Integer; const aDefault: TXmlString = ''): TXmlString; overload;
procedure SetChildText(const aName, aValue: TXmlString); overload;
procedure SetChildText(aNameID: Integer; const aValue: TXmlString); overload;
// NeedChild - âîçâðàùàåò äî÷åðíèé óçåë ñ óêàçàííûì èìåíåì.
// Åñëè óçåë íå íàéäåí, òî ãåíåðèðóåòñÿ èñêëþ÷åíèå
function NeedChild(aNameID: Integer): IXmlNode; overload;
function NeedChild(const aName: TXmlString): IXmlNode; overload;
// EnsureChild - âîçâðàùàåò äî÷åðíèé óçåë ñ óêàçàííûì èìåíåì.
// Åñëè óçåë íå íàéäåí, òî îí áóäåò ñîçäàí
function EnsureChild(aNameID: Integer): IXmlNode; overload;
function EnsureChild(const aName: TXmlString): IXmlNode; overload;
// RemoveAllChilds - óäàëÿåò âñå äî÷åðíèå óçëû
procedure RemoveAllChilds;
// SelectNodes - ïðîèçâîäèò âûáîðêó óçëîâ, óäîâëåòâîðÿþùèõ
// óêàçàííûì êðèòåðèÿì
function SelectNodes(const anExpression: TXmlString): IXmlNodeList; overload;
function SelectNodes(aNodeNameID: Integer): IXmlNodeList; overload;
// SelectSingleNode - ïðîèçâîäèò ïîèñê ïåðâîãî óçëà, óäîâëåòâîðÿþùåãî
// óêàçàííûì êðèòåðèÿì
function SelectSingleNode(const anExpression: TXmlString): IXmlNode;
// FindElement - ïðîèçâîäèò ïîèñê ïåðâîãî óçëà, óäîâëåòâîðÿþùåãî
// óêàçàííûì êðèòåðèÿì
function FindElement(const anElementName, anAttrName: String; const anAttrValue: Variant): IXmlElement;
function FindElements(const anElementName, anAttrName: String; const anAttrValue: Variant): IXmlNodeList;
// Get_AttrCount - âîçâðàùàåò êîëè÷åñòâî àòðèáóòîâ
function Get_AttrCount: Integer;
// Get_AttrNameID - âîçâðàùàåò êîä íàçâàíèÿ àòðèáóòà
function Get_AttrNameID(anIndex: Integer): Integer;
// Get_AttrName - âîçâðàùàåò íàçâàíèå àòðèáóòà
function Get_AttrName(anIndex: Integer): TXmlString;
// RemoveAttr - óäàëÿåò àòðèáóò
procedure RemoveAttr(const aName: TXmlString); overload;
procedure RemoveAttr(aNameID: Integer); overload;
// RemoveAllAttrs - óäàëÿåò âñå àòðèáóòû
procedure RemoveAllAttrs;
// AttrExists - ïðîâåðÿåò, çàäàí ëè óêàçàííûé àòðèáóò.
function AttrExists(aNameID: Integer): Boolean; overload;
function AttrExists(const aName: TXmlString): Boolean; overload;
// GetAttrType - âîçàðàùàåò òèï äàííûõ àòðèáóòà â òåðìèíàõ âàðèàíòîâ
function GetAttrType(aNameID: Integer): Integer; overload;
function GetAttrType(const aName: TXmlString): Integer; overload;
// GetAttrType - âîçâðàùàåò òèï àòðèáóòà
// Result
// GetVarAttr - âîçâðàùàåò òèïèçèðîâàííîå çíà÷åíèå óêàçàííîãî àòðèáóòà.
// Åñëè àòðèáóò íå çàäàí, òî âîçâðàùàåòñÿ çíà÷åíèå ïî óìîë÷àíèþ
// SetAttr - èçìåíÿåò èëè äîáàâëÿåò óêàçàííûé àòðèáóò
function GetVarAttr(aNameID: Integer; const aDefault: Variant): Variant; overload;
function GetVarAttr(const aName: TXmlString; const aDefault: Variant): Variant; overload;
procedure SetVarAttr(aNameID: Integer; const aValue: Variant); overload;
procedure SetVarAttr(const aName: TXmlString; aValue: Variant); overload;
function NeedVarAttr(aNameID: Integer): Variant; overload;
function NeedVarAttr(const aName: TXmlString): Variant; overload;
// NeedAttr - âîçâðàùàåò ñòðîêîâîå çíà÷åíèå óêàçàííîãî àòðèáóòà.
// Åñëè àòðèáóò íå çàäàí, òî ãåíåðèðóåòñÿ èñêëþ÷åíèå
function NeedAttr(aNameID: Integer): TXmlString; overload;
function NeedAttr(const aName: TXmlString): TXmlString; overload;
// GetAttr - âîçâðàùàåò ñòðîêîâîå çíà÷åíèå óêàçàííîãî àòðèáóòà.
// Åñëè àòðèáóò íå çàäàí, òî âîçâðàùàåòñÿ çíà÷åíèå ïî óìîë÷àíèþ
// SetAttr - èçìåíÿåò èëè äîáàâëÿåò óêàçàííûé àòðèáóò
function GetAttr(aNameID: Integer; const aDefault: TXmlString = ''): TXmlString; overload;
function GetAttr(const aName: TXmlString; const aDefault: TXmlString = ''): TXmlString; overload;
procedure SetAttr(aNameID: Integer; const aValue: TXmlString); overload;
procedure SetAttr(const aName, aValue: TXmlString); overload;
// GetBoolAttr - âîçâðàùàåò öåëî÷èñëåííîå çíà÷åíèå óêàçàííîãî àòðèáóòà
// SetBoolAttr - èçìåíÿåò èëè äîáàâëÿåò óêàçàííûé àòðèáóò öåëî÷èñëåííûì
// çíà÷åíèåì
function GetBoolAttr(aNameID: Integer; aDefault: Boolean = False): Boolean; overload;
function GetBoolAttr(const aName: TXmlString; aDefault: Boolean = False): Boolean; overload;
procedure SetBoolAttr(aNameID: Integer; aValue: Boolean = False); overload;
procedure SetBoolAttr(const aName: TXmlString; aValue: Boolean); overload;
// GetIntAttr - âîçâðàùàåò öåëî÷èñëåííîå çíà÷åíèå óêàçàííîãî àòðèáóòà
// SetIntAttr - èçìåíÿåò èëè äîáàâëÿåò óêàçàííûé àòðèáóò öåëî÷èñëåííûì
// çíà÷åíèåì
function GetIntAttr(aNameID: Integer; aDefault: Integer = 0): Integer; overload;
function GetIntAttr(const aName: TXmlString; aDefault: Integer = 0): Integer; overload;
procedure SetIntAttr(aNameID: Integer; aValue: Integer); overload;
procedure SetIntAttr(const aName: TXmlString; aValue: Integer); overload;
// GetDateTimeAttr - âîçâðàùàåò öåëî÷èñëåííîå çíà÷åíèå óêàçàííîãî àòðèáóòà
// SetDateTimeAttr - èçìåíÿåò èëè äîáàâëÿåò óêàçàííûé àòðèáóò öåëî÷èñëåííûì
// çíà÷åíèåì
function GetDateTimeAttr(aNameID: Integer; aDefault: TDateTime = 0): TDateTime; overload;
function GetDateTimeAttr(const aName: TXmlString; aDefault: TDateTime = 0): TDateTime; overload;
procedure SetDateTimeAttr(aNameID: Integer; aValue: TDateTime); overload;
procedure SetDateTimeAttr(const aName: TXmlString; aValue: TDateTime); overload;
// GetFloatAttr - âîçâðàùàåò çíà÷åíèå óêàçàííîãî àòðèáóòà â âèäå
// âåùåñòâåííîãî ÷èñëà
// SetFloatAttr - èçìåíÿåò èëè äîáàâëÿåò óêàçàííûé àòðèáóò âåùåñòâåííûì
// çíà÷åíèåì
function GetFloatAttr(aNameID: Integer; aDefault: Double = 0): Double; overload;
function GetFloatAttr(const aName: TXmlString; aDefault: Double = 0): Double; overload;
function NeedFloatAttr(aNameID: Integer): Double; overload;
function NeedFloatAttr(const aName: TXmlString): Double; overload;
procedure SetFloatAttr(aNameID: Integer; aValue: Double); overload;
procedure SetFloatAttr(const aName: TXmlString; aValue: Double); overload;
// GetHexAttr - ïîëó÷åíèå çíà÷åíèÿ óêàçàííîãî àòðèáóòà â öåëî÷èñëåííîì âèäå.
// Ñòðîêîâîå çíà÷åíèå àòðèáóòà ïðåîáðàçóåòñÿ â öåëîå ÷èñëî. Èñõîäíàÿ
// ñòðîêà äîëæíà áûòü çàäàíà â øåñòíàäöàòèðè÷íîì âèäå áåç ïðåôèêñîâ
// ("$", "0x" è ïð.) Åñëè ïðåîáðàçîâàíèå íå ìîæåò áûòü âûïîëíåíî,
// ãåíåðèðóåòñÿ èñêëþ÷åíèå.
// Åñëè àòðèáóò íå çàäàí, âîçâðàùàåòñÿ çíà÷åíèå ïàðàìåòðà aDefault.
// SetHexAttr - èçìåíåíèå çíà÷åíèÿ óêàçàííîãî àòðèáóòà íà ñòðîêîâîå
// ïðåäñòàâëåíèå öåëîãî ÷èñëà â øåñòíàäöàòèðè÷íîì âèäå áåç ïðåôèêñîâ
// ("$", "0x" è ïð.) Åñëè ïðåîáðàçîâàíèå íå ìîæåò áûòü âûïîëíåíî,
// ãåíåðèðóåòñÿ èñêëþ÷åíèå.
// Åñëè àòðèáóò íå áûë çàäàí, äî îí áóäåò äîáàâëåí.
// Åñëè áûë çàäàí, òî áóäåò èçìåíåí.
function GetHexAttr(const aName: TXmlString; aDefault: Integer = 0): Integer; overload;
function GetHexAttr(aNameID: Integer; aDefault: Integer = 0): Integer; overload;
procedure SetHexAttr(const aName: TXmlString; aValue: Integer; aDigits: Integer = 8); overload;
procedure SetHexAttr(aNameID: Integer; aValue: Integer; aDigits: Integer = 8); overload;
// GetEnumAttr - èùåò çíà÷åíèå àòðèáóòà â óêàçàííîì ñïèñêå ñòðîê è
// âîçâðàùàåò èíäåêñ íàéäåííîé ñòðîêè. Åñëè àòðèáóò çàäàí íî íå íàéäåí
// â ñïèñêå, òî ãåíåðèðóåòñÿ èñêëþ÷åíèå.
// Åñëè àòðèáóò íå çàäàí, âîçâðàùàåòñÿ çíà÷åíèå ïàðàìåòðà aDefault.
function GetEnumAttr(const aName: TXmlString;
const aValues: array of TXmlString; aDefault: Integer = 0): Integer; overload;
function GetEnumAttr(aNameID: Integer;
const aValues: array of TXmlString; aDefault: Integer = 0): Integer; overload;
function NeedEnumAttr(const aName: TXmlString;
const aValues: array of TXmlString): Integer; overload;
function NeedEnumAttr(aNameID: Integer;
const aValues: array of TXmlString): Integer; overload;
// ReplaceTextByCDATASection - óäàëÿåò âñå òåêñòîâûå ýëåìåíòû è äîáàâëÿåò
// îäíó ñåêöèþ CDATA, ñîäåðæàùóþ óêàçàííûé òåêñò
procedure ReplaceTextByCDATASection(const aText: TXmlString);
// ReplaceTextByBynaryData - óäàëÿåò âñå òåêñòîâûå ýëåìåíòû è äîáàâëÿåò
// îäèí òåêñòîâûé ýëåìåíò, ñîäåðæàùèé óêàçàííûå äâîè÷íûå äàííûå
// â ôîðìàòå "base64".
// Åñëè ïàðàìåòð aMaxLineLength íå ðàâåí íóëþ, òî ïðîèçâîäèòñÿ ðàçáèâêà
// ïîëó÷åíîé ñòðîêè íà ñòðîêè äëèíîé aMaxLineLength.
// Ñòðîêè ðàçäåëÿþòñÿ ïàðîé ñèìâîëîâ #13#10 (CR,LF).
// Ïîñëå ïîñëåäíåé ñòðîêè óêàçàííûå ñèìâîëû íå âñòàâëÿþòñÿ.
procedure ReplaceTextByBynaryData(const aData; aSize: Integer;
aMaxLineLength: Integer);
// GetTextAsBynaryData - cîáèðàåò âñå òåêñòîâûå ýëåìåíòû â îäíó ñòðîêó è
// ïðîèçâîäèò ïðåîáðàçîâàíèå èç ôîðìàòà "base64" â äâîè÷íûå äàííûå.
// Ïðè ïðåîáðàçîâàíèè èãíîðèðóþòñÿ âñå ïðîáåëüíûå ñèìâîëû (ñ êîäîì <= ' '),
// ñîäåðæàùèåñÿ â èñõîäíîé ñòðîêå.
function GetTextAsBynaryData: String;
function GetOwnText: TXmlString;
function Get_Values(const aName: String): Variant;
procedure Set_Values(const aName: String; const aValue: Variant);
function AsElement: IXmlElement;
function AsText: IXmlText;
function AsCDATASection: IXmlCDATASection;
function AsComment: IXmlComment;
function AsProcessingInstruction: IXmlProcessingInstruction;
property SourceLine: Integer read Get_SourceLine;
property SourceCol: Integer read Get_SourceCol;
property NodeName: TXmlString read Get_NodeName;
property NodeNameID: Integer read Get_NodeNameID;
property NodeType: Integer read Get_NodeType;
property ParentNode: IXmlNode read Get_ParentNode;
property OwnerDocument: IXmlDocument read Get_OwnerDocument;
property NextSibling: IXmlNode read Get_NextSibling;
property NameTable: IXmlNameTable read Get_NameTable;
property ChildNodes: IXmlNodeList read Get_ChildNodes;
property AttrCount: Integer read Get_AttrCount;
property AttrNames[anIndex: Integer]: TXmlString read Get_AttrName;
property AttrNameIDs[anIndex: Integer]: Integer read Get_AttrNameID;
property Text: TXmlString read Get_Text write Set_Text;
property DataType: Integer read Get_DataType;
property TypedValue: Variant read Get_TypedValue write Set_TypedValue;
property XML: TXmlString read Get_XML;
property Values[const aName: String]: Variant read Get_Values write Set_Values; default;
end;
IXmlElement = interface(IXmlNode)
end;
IXmlCharacterData = interface(IXmlNode)
end;
IXmlText = interface(IXmlCharacterData)
end;
IXmlCDATASection = interface(IXmlCharacterData)
end;
IXmlComment = interface(IXmlCharacterData)
end;
IXmlProcessingInstruction = interface(IXmlNode)
end;
IXmlDocument = interface(IXmlNode)
function Get_DocumentElement: IXmlElement;
function Get_BinaryXML: String;
function Get_PreserveWhiteSpace: Boolean;
procedure Set_PreserveWhiteSpace(aValue: Boolean);
function NewDocument(const aVersion, anEncoding: TXmlString;
aRootElementNameID: Integer): IXmlElement; overload;
function NewDocument(const aVersion, anEncoding,
aRootElementName: TXmlString): IXmlElement; overload;
function CreateElement(aNameID: Integer): IXmlElement; overload;
function CreateElement(const aName: TXmlString): IXmlElement; overload;
function CreateText(const aData: TXmlString): IXmlText;
function CreateCDATASection(const aData: TXmlString): IXmlCDATASection;
function CreateComment(const aData: TXmlString): IXmlComment;
function CreateProcessingInstruction(const aTarget,
aData: TXmlString): IXmlProcessingInstruction; overload;
function CreateProcessingInstruction(aTargetID: Integer;
const aData: TXmlString): IXmlProcessingInstruction; overload;
procedure LoadXML(const anXml: TXmlString);
procedure LoadBinaryXML(const anXml: String);
procedure Load(aStream: TStream); overload;
procedure Load(const aFileName: TXmlString); overload;
procedure LoadResource(aType, aName: PChar);
procedure Save(aStream: TStream); overload;
procedure Save(const aFileName: TXmlString); overload;
procedure SaveBinary(aStream: TStream; anOptions: LongWord = 0); overload;
procedure SaveBinary(const aFileName: TXmlString; anOptions: LongWord = 0); overload;
property PreserveWhiteSpace: Boolean read Get_PreserveWhiteSpace write Set_PreserveWhiteSpace;
property DocumentElement: IXmlElement read Get_DocumentElement;
property BinaryXML: String read Get_BinaryXML;
end;
function CreateNameTable(aHashTableSize: Integer = 4096): IXmlNameTable;
function CreateXmlDocument(
const aRootElementName: String = '';
const aVersion: String = '1.0';
const anEncoding: String = ''; // SimpleXmlDefaultEncoding
const aNames: IXmlNameTable = nil): IXmlDocument;
function CreateXmlElement(const aName: TXmlString; const aNameTable: IXmlNameTable = nil): IXmlElement;
function CreateXmlNodeList: IXmlNodeList;
function LoadXmlDocumentFromXML(const anXml: TXmlString): IXmlDocument;
function LoadXmlDocumentFromBinaryXML(const anXml: String): IXmlDocument;
function LoadXmlDocument(aStream: TStream): IXmlDocument; overload;
function LoadXmlDocument(const aFileName: TXmlString): IXmlDocument; overload;
function LoadXmlDocument(aResType, aResName: PChar): IXmlDocument; overload;
var
DefaultNameTable: IXmlNameTable = nil;
DefaultPreserveWhiteSpace: Boolean = False;
DefaultEncoding: String = 'windows-1251';
DefaultIndentText: String = ^I;
resourcestring
SSimpleXmlError1 = 'Îøèáêà ïîëó÷åíèÿ ýëåìåíòà ñïèñêà: èíäåêñ âûõîäèò çà ïðåäåëû';
SSimpleXmlError2 = 'Íå çàâåðøåíî îïðåäåëåíèå ýëåìåíòà';
SSimpleXmlError3 = 'Íåêîððåòíûé ñèìâîë â èìåíè ýëåìåíòà';
SSimpleXmlError4 = 'Îøèáêà ÷òåíèÿ äâîè÷íîãî XML: íåêîððåêòíûé òèï óçëà';
SSimpleXmlError5 = 'Îøèáêà çàïèñè äâîè÷íîãî XML: íåêîððåêòíûé òèï óçëà';
SSimpleXmlError6 = 'Íåâåðíîå çíà÷åíèå àòðèáóòà "%s" ýëåìåíòà "%s".'^M^J +
'Äîïóñòèìûå çíà÷åíèÿ:'^M^J +
'%s';
SSimpleXmlError7 = 'Íå íàéäåí àòðèáóò "%s"';
SSimpleXmlError8 = 'Íå çàäàí àòðèáóò "%s"';
SSimpleXmlError9 = 'Äàííàÿ âîçìîæíîñòü íå ïîääåðæèâàåòñÿ SimpleXML';
SSimpleXmlError10 = 'Îøèáêà: íå íàéäåí äî÷åðíèé ýëåìåíò "%s".';
SSimpleXmlError11 = 'Èìÿ äîëæíî íà÷èíàòüñÿ ñ áóêâû èëè "_" (ñòð. %d, ïîç. %d)';
SSimpleXmlError12 = 'Îæèäàåòñÿ ÷èñëî (ñòð. %d, ïîç. %d)';
SSimpleXmlError13 = 'Îæèäàåòñÿ øåñòíàäöàòåðè÷íîå ÷èñëî (ñòð. %d, ïîç. %d)';
SSimpleXmlError14 = 'Îæèäàåòñÿ "#" èëè èìÿ óïðàìëÿþùåãî ñèìâîëà (ñòð. %d, ïîç. %d)';
SSimpleXmlError15 = 'Íåêîððåêòíîå èìÿ óïðàâëÿþùåãî ñèìâîëà (ñòð. %d, ïîç. %d)';
SSimpleXmlError16 = 'Îæèäàåòñÿ "%s" (ñòð. %d, ïîç. %d)';
SSimpleXmlError17 = 'Îæèäàåòñÿ "%s" (ñòð. %d, ïîç. %d)';
SSimpleXmlError18 = 'Ñèìâîë "<" íå ìîæåò èñïîëüçîâàòüñÿ â çíà÷åíèÿõ àòðèáóòîâ (ñòð. %d, ïîç. %d)';
SimpleXmlError19 = 'Îæèäàåòñÿ "%s" (ñòð. %d, ïîç. %d)';
SSimpleXmlError20 = 'Îæèäàåòñÿ çíà÷åíèå àòðèáóòà (ñòð. %d, ïîç. %d)';
SSimpleXmlError21 = 'Îæèäàåòñÿ ñòðîêîâàÿ êîíñòàíòà (ñòð. %d, ïîç. %d)';
SimpleXmlError22 = 'Îæèäàåòñÿ "%s" (ñòð. %d, ïîç. %d)';
SSimpleXmlError23 = 'Îøèáêà ÷òåíèÿ äàííûõ.';
SSimpleXmlError24 = 'Îøèáêà ÷òåíèÿ çíà÷åíèÿ: íåêîððåêòíûé òèï.';
SSimpleXmlError25 = 'Îøèáêà çàïèñè çíà÷åíèÿ: íåêîððåêòíûé òèï.';
SSimpleXmlError26 = '%s (%s)';
SSimpleXmlError27 = 'Îøèáêà óñòàíîâêè çíà÷åíèÿ àòðèáóòà: íå çàäàíî èìÿ.';
function XSTRToFloat(s: TXmlString): Double;
function FloatToXSTR(v: Double): TXmlString;
function DateTimeToXSTR(v: TDateTime): TXmlString;
function VarToXSTR(const v: TVarData): TXmlString;
function TextToXML(const aText: TXmlString): TXmlString;
function BinToBase64(const aBin; aSize, aMaxLineLength: Integer): String;
function Base64ToBin(const aBase64: String): String;
function IsXmlDataString(const aData: String): Boolean;
function XmlIsInBinaryFormat(const aData: String): Boolean;
procedure PrepareToSaveXml(var anElem: IXmlElement; const aChildName: String);
function PrepareToLoadXml(var anElem: IXmlElement; const aChildName: String): Boolean;
implementation
uses
Variants, DateUtils;
type
TStringBuilder = object
private
FData: TXmlString;
FLength: Integer;
public
procedure Init;
procedure Add(const s: TXmlString);
procedure GetString(var aString: TXmlString);
end;
{ TStringBuilder }
procedure TStringBuilder.Init;
begin
FData := '';
FLength := 0;
end;
procedure TStringBuilder.Add(const s: String);
var
anAddLength,
aNewLength: Integer;
begin
anAddLength := Length(s);
if anAddLength = 0 then
Exit;
aNewLength := FLength + anAddLength;
if aNewLength > Length(FData) then
if aNewLength > 64 then
SetLength(FData, aNewLength + aNewLength div 4)
else if aNewLength > 8 then
SetLength(FData, aNewLength + 16)
else
SetLength(FData, aNewLength + 4);
Move(s[1], FData[FLength + 1], anAddLength*sizeof(TXmlChar));
FLength := aNewLength;
end;
procedure TStringBuilder.GetString(var aString: String);
begin
SetLength(aString, FLength);
if FLength > 0 then
Move(FData[1], aString[1], FLength*sizeof(TXmlChar));
end;
function TextToXML(const aText: TXmlString): TXmlString;
var
i, j: Integer;
begin
j := 0;
for i := 1 to Length(aText) do
case aText[i] of
'<', '>': Inc(j, 4);
'&': Inc(j, 5);
'"': Inc(j, 6);
else
Inc(j);
end;
if j = Length(aText) then
Result := aText
else begin
SetLength(Result, j);
j := 1;
for i := 1 to Length(aText) do
case aText[i] of
'<': begin Move(PChar('<')^, Result[j], 4); Inc(j, 4) end;
'>': begin Move(PChar('>')^, Result[j], 4); Inc(j, 4) end;
'&': begin Move(PChar('&')^, Result[j], 5); Inc(j, 5) end;
'"': begin Move(PChar('"')^, Result[j], 6); Inc(j, 6) end;
else begin Result[j] := aText[i]; Inc(j) end;
end;
end;
end;
function XSTRToFloat(s: TXmlString): Double;
var
aPos: Integer;
begin
if '.' = DecimalSeparator then
aPos := Pos(',', s)
else if ',' = DecimalSeparator then
aPos := Pos('.', s)
else begin
aPos := Pos(',', s);
if aPos = 0 then
aPos := Pos('.', s);
end;
if aPos <> 0 then
s[aPos] := TXmlChar(DecimalSeparator);
Result := StrToFloat(s);
end;
function FloatToXSTR(v: Double): TXmlString;
var
aPos: Integer;
begin
Result := FloatToStr(v);
aPos := Pos(DecimalSeparator, Result);
if aPos <> 0 then
Result[aPos] := '.';
end;
function XSTRToDateTime(const s: String): TDateTime;
var
aPos: Integer;
function FetchTo(aStop: Char): Integer;
var
i: Integer;
begin
i := aPos;
while (i <= Length(s)) and (s[i] in ['0'..'9']) do
Inc(i);
if i > aPos then
Result := StrToInt(Copy(s, aPos, i - aPos))
else
Result := 0;
if (i <= Length(s)) and (s[i] = aStop) then
aPos := i + 1
else
aPos := Length(s) + 1;
end;
var
y, m, d, h, n, ss: Integer;
begin
aPos := 1;
y := FetchTo('-'); m := FetchTo('-'); d := FetchTo('T');
h := FetchTo('-'); n := FetchTo('-'); ss := FetchTo('-');
Result := EncodeDateTime(y, m, d, h, n, ss, 0);
end;
function DateTimeToXSTR(v: TDateTime): TXmlString;
var
y, m, d, h, n, s, ms: Word;
begin
DecodeDateTime(v, y, m, d, h, n, s, ms);
Result := Format('%.4d-%.2d-%.2dT%.2d-%.2d-%.2d', [y, m, d, h, n, s])
end;
function VarToXSTR(const v: TVarData): TXmlString;
const
BoolStr: array[Boolean] of TXmlString = ('0', '1');
var
p: Pointer;
begin
case v.VType of
varNull: Result := XSTR_NULL;
varSmallint: Result := IntToStr(v.VSmallInt);
varInteger: Result := IntToStr(v.VInteger);
varSingle: Result := FloatToXSTR(v.VSingle);
varDouble: Result := FloatToXSTR(v.VDouble);
varCurrency: Result := FloatToXSTR(v.VCurrency);
varDate: Result := DateTimeToXSTR(v.VDate);
varOleStr: Result := v.VOleStr;
varBoolean: Result := BoolStr[v.VBoolean = True];
varShortInt: Result := IntToStr(v.VShortInt);
varByte: Result := IntToStr(v.VByte);
varWord: Result := IntToStr(v.VWord);
varLongWord: Result := IntToStr(v.VLongWord);
varInt64: Result := IntToStr(v.VInt64);
varString: Result := String(v.VString);
varArray + varByte:
begin
p := VarArrayLock(Variant(v));
try
Result := BinToBase64(p^, VarArrayHighBound(Variant(v), 1) - VarArrayLowBound(Variant(v), 1) + 1, 0);
finally
VarArrayUnlock(Variant(v))
end
end;
else
Result := Variant(v)
end;
end;
procedure PrepareToSaveXml(var anElem: IXmlElement; const aChildName: String);
begin
if aChildName <> '' then
anElem := anElem.AppendElement(aChildName);
end;
function PrepareToLoadXml(var anElem: IXmlElement; const aChildName: String): Boolean;
begin
if (aChildName <> '') and Assigned(anElem) then
anElem := anElem.selectSingleNode(aChildName).AsElement;
Result := Assigned(anElem);
end;
function LoadXMLResource(aModule: HMODULE; aName, aType: PChar; const aXMLDoc: IXmlDocument): boolean;
var
aRSRC: HRSRC;
aGlobal: HGLOBAL;
aSize: DWORD;
aPointer: Pointer;
aStream: TStringStream;
begin
Result := false;
aRSRC := FindResource(aModule, aName, aType);
if aRSRC <> 0 then begin
aGlobal := LoadResource(aModule, aRSRC);
aSize := SizeofResource(aModule, aRSRC);
if (aGlobal <> 0) and (aSize <> 0) then begin
aPointer := LockResource(aGlobal);
if Assigned(aPointer) then begin
aStream := TStringStream.Create('');
try
aStream.WriteBuffer(aPointer^, aSize);
aXMLDoc.LoadXML(aStream.DataString);
Result := true;
finally
aStream.Free;
end;
end;
end;
end;
end;
function IsXmlDataString(const aData: String): Boolean;
var
i: Integer;
begin
Result := Copy(aData, 1, BinXmlSignatureSize) = BinXmlSignature;
if not Result then begin
i := 1;
while (i <= Length(aData)) and (aData[i] in [#10, #13, #9, ' ']) do
Inc(i);
Result := Copy(aData, i, Length('<?xml ')) = '<?xml ';
end;
end;
function XmlIsInBinaryFormat(const aData: String): Boolean;
begin
Result := Copy(aData, 1, BinXmlSignatureSize) = BinXmlSignature
end;
var
Base64Map: array [0..63] of Char = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
type
PChars = ^TChars;
TChars = packed record a, b, c, d: Char end;
POctet = ^TOctet;
TOctet = packed record a, b, c: Byte; end;
procedure OctetToChars(po: POctet; aCount: Integer; pc: PChars);
var
o: Integer;
begin
if aCount = 1 then begin
o := po.a shl 16;
LongWord(pc^) := $3D3D3D3D;
pc.a := Base64Map[(o shr 18) and $3F];
pc.b := Base64Map[(o shr 12) and $3F];
end
else if aCount = 2 then begin
o := po.a shl 16 or po.b shl 8;
LongWord(pc^) := $3D3D3D3D;
pc.a := Base64Map[(o shr 18) and $3F];
pc.b := Base64Map[(o shr 12) and $3F];
pc.c := Base64Map[(o shr 6) and $3F];
end
else if aCount > 2 then begin
o := po.a shl 16 or po.b shl 8 or po.c;
LongWord(pc^) := $3D3D3D3D;
pc.a := Base64Map[(o shr 18) and $3F];
pc.b := Base64Map[(o shr 12) and $3F];
pc.c := Base64Map[(o shr 6) and $3F];
pc.d := Base64Map[o and $3F];
end;
end;
function BinToBase64(const aBin; aSize, aMaxLineLength: Integer): String;
var
o: POctet;
c: PChars;
aCount: Integer;
i: Integer;
begin
o := @aBin;
aCount := aSize;
SetLength(Result, ((aCount + 2) div 3)*4);
c := PChars(Result);
while aCount > 0 do begin
OctetToChars(o, aCount, c);
Inc(o);
Inc(c);
Dec(aCount, 3);
end;
if aMaxLineLength > 0 then begin
i := aMaxLineLength;
while i <= Length(Result) do begin
Insert(#13#10, Result, i);
Inc(i, 2 + aMaxLineLength);
end
end;
end;
function CharTo6Bit(c: Char): Byte;
begin
if (c >= 'A') and (c <= 'Z') then
Result := Ord(c) - Ord('A')
else if (c >= 'a') and (c <= 'z') then
Result := Ord(c) - Ord('a') + 26
else if (c >= '0') and (c <= '9') then
Result := Ord(c) - Ord('0') + 52
else if c = '+' then
Result := 62
else if c = '/' then
Result := 63
else
Result := 0
end;
procedure CharsToOctet(c: PChars; o: POctet);
var
i: Integer;
begin
if c.c = '=' then begin // 1 byte
i := CharTo6Bit(c.a) shl 18 or CharTo6Bit(c.b) shl 12;
o.a := (i shr 16) and $FF;
end
else if c.d = '=' then begin // 2 bytes
i := CharTo6Bit(c.a) shl 18 or CharTo6Bit(c.b) shl 12 or CharTo6Bit(c.c) shl 6;
o.a := (i shr 16) and $FF;
o.b := (i shr 8) and $FF;
end
else begin // 3 bytes
i := CharTo6Bit(c.a) shl 18 or CharTo6Bit(c.b) shl 12 or CharTo6Bit(c.c) shl 6 or CharTo6Bit(c.d);
o.a := (i shr 16) and $FF;
o.b := (i shr 8) and $FF;
o.c := i and $FF;
end;
end;
function Base64ToBin(const aBase64: String): String;
var
o: POctet;
c: PChars;
aCount: Integer;
s: String;
i, j: Integer;
begin
s := aBase64;
i := 1;
while i <= Length(s) do begin
while (i <= Length(s)) and (s[i] > ' ') do
Inc(i);
if i <= Length(s) then begin
j := i;
while (j <= Length(s)) and (s[j] <= ' ') do
Inc(j);
Delete(s, i, j - i);
end;
end;
if Length(s) < 4 then
Result := ''
else begin
aCount := ((Length(s) + 3) div 4)*3;
if aCount > 0 then begin
if s[Length(s) - 1] = '=' then
Dec(aCount, 2)
else if s[Length(s)] = '=' then
Dec(aCount);
SetLength(Result, aCount);
FillChar(Result[1], aCount, '*');
c := @s[1];
o := @Result[1];
while aCount > 0 do begin
CharsToOctet(c, o);
Inc(o);
Inc(c);
Dec(aCount, 3);
end;
end;
end;
end;
type
TBinXmlReader = class
private
FOptions: LongWord;
public
procedure Read(var aBuf; aSize: Integer); virtual; abstract;
function ReadLongint: Longint;
function ReadAnsiString: String;
function ReadWideString: WideString;
function ReadXmlString: TXmlString;
procedure ReadVariant(var v: TVarData);
end;
TStmXmlReader = class(TBinXmlReader)
private
FStream: TStream;
FOptions: LongWord;
FBufStart,
FBufEnd,
FBufPtr: PChar;
FBufSize,
FRestSize: Integer;
public
constructor Create(aStream: TStream; aBufSize: Integer);
destructor Destroy; override;
procedure Read(var aBuf; aSize: Integer); override;
end;
TStrXmlReader = class(TBinXmlReader)
private
FString: String;
FOptions: LongWord;
FPtr: PChar;
FRestSize: Integer;
public
constructor Create(const aStr: String);
procedure Read(var aBuf; aSize: Integer); override;
end;
TBinXmlWriter = class
private
FOptions: LongWord;
public
procedure Write(const aBuf; aSize: Integer); virtual; abstract;
procedure WriteLongint(aValue: Longint);
procedure WriteAnsiString(const aValue: String);
procedure WriteWideString(const aValue: WideString);
procedure WriteXmlString(const aValue: TXmlString);
procedure WriteVariant(const v: TVarData);
end;
TStmXmlWriter = class(TBinXmlWriter)
private
FStream: TStream;
FBufStart,
FBufEnd,
FBufPtr: PChar;
FBufSize: Integer;
public
constructor Create(aStream: TStream; anOptions: LongWord; aBufSize: Integer);
destructor Destroy; override;
procedure Write(const aBuf; aSize: Integer); override;
end;
TStrXmlWriter = class(TBinXmlWriter)
private
FData: String;
FBufStart,
FBufEnd,
FBufPtr: PChar;
FBufSize: Integer;
procedure FlushBuf;
public
constructor Create(anOptions: LongWord; aBufSize: Integer);
destructor Destroy; override;
procedure Write(const aBuf; aSize: Integer); override;
end;
TXmlBase = class(TInterfacedObject, IXmlBase)
protected
// ðåàëèçàöèÿ èíòåðôåéñà IXmlBase
function GetObject: TObject;
public
end;
PNameIndexArray = ^TNameIndexArray;