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// Copyright 2017 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#ifndef XFA_FDE_XML_CFDE_XMLSYNTAXPARSER_H_
#define XFA_FDE_XML_CFDE_XMLSYNTAXPARSER_H_
#include <stack>
#include "core/fxcrt/cfx_blockbuffer.h"
#include "core/fxcrt/cfx_retain_ptr.h"
#include "core/fxcrt/fx_string.h"
#include "xfa/fde/xml/cfde_xmlnode.h"
#include "xfa/fgas/crt/ifgas_stream.h"
enum class FDE_XmlSyntaxResult {
None,
InstructionOpen,
InstructionClose,
ElementOpen,
ElementBreak,
ElementClose,
TargetName,
TagName,
AttriName,
AttriValue,
Text,
CData,
TargetData,
Error,
EndOfString
};
class CFDE_XMLSyntaxParser {
public:
CFDE_XMLSyntaxParser();
~CFDE_XMLSyntaxParser();
void Init(const CFX_RetainPtr<IFGAS_Stream>& pStream,
int32_t iXMLPlaneSize,
int32_t iTextDataSize = 256);
FDE_XmlSyntaxResult DoSyntaxParse();
int32_t GetStatus() const;
int32_t GetCurrentPos() const {
return m_iParsedChars + (m_pStart - m_pBuffer);
}
FX_FILESIZE GetCurrentBinaryPos() const;
int32_t GetCurrentNodeNumber() const { return m_iCurrentNodeNum; }
int32_t GetLastNodeNumber() const { return m_iLastNodeNum; }
void GetTargetName(CFX_WideString& wsTarget) const {
wsTarget = m_BlockBuffer.GetTextData(0, m_iTextDataLength);
}
void GetTagName(CFX_WideString& wsTag) const {
wsTag = m_BlockBuffer.GetTextData(0, m_iTextDataLength);
}
void GetAttributeName(CFX_WideString& wsAttriName) const {
wsAttriName = m_BlockBuffer.GetTextData(0, m_iTextDataLength);
}
void GetAttributeValue(CFX_WideString& wsAttriValue) const {
wsAttriValue = m_BlockBuffer.GetTextData(0, m_iTextDataLength);
}
void GetTextData(CFX_WideString& wsText) const {
wsText = m_BlockBuffer.GetTextData(0, m_iTextDataLength);
}
void GetTargetData(CFX_WideString& wsData) const {
wsData = m_BlockBuffer.GetTextData(0, m_iTextDataLength);
}
protected:
enum class FDE_XmlSyntaxState {
Text,
Node,
Target,
Tag,
AttriName,
AttriEqualSign,
AttriQuotation,
AttriValue,
Entity,
EntityDecimal,
EntityHex,
CloseInstruction,
BreakElement,
CloseElement,
SkipDeclNode,
DeclCharData,
SkipComment,
SkipCommentOrDecl,
SkipCData,
TargetData
};
void ParseTextChar(wchar_t ch);
CFX_RetainPtr<IFGAS_Stream> m_pStream;
int32_t m_iXMLPlaneSize;
int32_t m_iCurrentPos;
int32_t m_iCurrentNodeNum;
int32_t m_iLastNodeNum;
int32_t m_iParsedChars;
int32_t m_iParsedBytes;
wchar_t* m_pBuffer;
int32_t m_iBufferChars;
bool m_bEOS;
wchar_t* m_pStart;
wchar_t* m_pEnd;
FDE_XMLNODE m_CurNode;
std::stack<FDE_XMLNODE> m_XMLNodeStack;
CFX_BlockBuffer m_BlockBuffer;
int32_t m_iAllocStep;
int32_t& m_iDataLength;
wchar_t* m_pCurrentBlock;
int32_t m_iIndexInBlock;
int32_t m_iTextDataLength;
FDE_XmlSyntaxResult m_syntaxParserResult;
FDE_XmlSyntaxState m_syntaxParserState;
wchar_t m_wQuotationMark;
int32_t m_iEntityStart;
std::stack<wchar_t> m_SkipStack;
wchar_t m_SkipChar;
};
#endif // XFA_FDE_XML_CFDE_XMLSYNTAXPARSER_H_
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