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// Copyright 2014 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 CORE_SRC_FXCRT_XML_INT_H_
#define CORE_SRC_FXCRT_XML_INT_H_
#include "../../include/fxcrt/fx_stream.h"
class CXML_DataBufAcc : public IFX_BufferRead
{
public:
CXML_DataBufAcc(const uint8_t* pBuffer, size_t size)
: m_pBuffer(pBuffer)
, m_dwSize(size)
, m_dwCurPos(0)
{
}
virtual ~CXML_DataBufAcc() {}
virtual void Release()
{
delete this;
}
virtual bool IsEOF()
{
return m_dwCurPos >= m_dwSize;
}
virtual FX_FILESIZE GetPosition()
{
return (FX_FILESIZE)m_dwCurPos;
}
virtual size_t ReadBlock(void* buffer, size_t size)
{
return 0;
}
virtual bool ReadNextBlock(bool bRestart = false)
{
if (bRestart) {
m_dwCurPos = 0;
}
if (m_dwCurPos < m_dwSize) {
m_dwCurPos = m_dwSize;
return true;
}
return false;
}
virtual const uint8_t* GetBlockBuffer()
{
return m_pBuffer;
}
virtual size_t GetBlockSize()
{
return m_dwSize;
}
virtual FX_FILESIZE GetBlockOffset()
{
return 0;
}
protected:
const uint8_t* m_pBuffer;
size_t m_dwSize;
size_t m_dwCurPos;
};
#define FX_XMLDATASTREAM_BufferSize (32 * 1024)
class CXML_DataStmAcc : public IFX_BufferRead
{
public:
CXML_DataStmAcc(IFX_FileRead *pFileRead)
: m_pFileRead(pFileRead)
, m_pBuffer(NULL)
, m_nStart(0)
, m_dwSize(0)
{
FXSYS_assert(m_pFileRead != NULL);
}
virtual ~CXML_DataStmAcc()
{
if (m_pBuffer) {
FX_Free(m_pBuffer);
}
}
virtual void Release()
{
delete this;
}
virtual bool IsEOF()
{
return m_nStart + (FX_FILESIZE)m_dwSize >= m_pFileRead->GetSize();
}
virtual FX_FILESIZE GetPosition()
{
return m_nStart + (FX_FILESIZE)m_dwSize;
}
virtual size_t ReadBlock(void* buffer, size_t size)
{
return 0;
}
virtual bool ReadNextBlock(bool bRestart = false)
{
if (bRestart) {
m_nStart = 0;
}
FX_FILESIZE nLength = m_pFileRead->GetSize();
m_nStart += (FX_FILESIZE)m_dwSize;
if (m_nStart >= nLength) {
return false;
}
m_dwSize = (size_t)FX_MIN(FX_XMLDATASTREAM_BufferSize, nLength - m_nStart);
if (!m_pBuffer) {
m_pBuffer = FX_Alloc(uint8_t, m_dwSize);
}
return m_pFileRead->ReadBlock(m_pBuffer, m_nStart, m_dwSize);
}
virtual const uint8_t* GetBlockBuffer()
{
return (const uint8_t*)m_pBuffer;
}
virtual size_t GetBlockSize()
{
return m_dwSize;
}
virtual FX_FILESIZE GetBlockOffset()
{
return m_nStart;
}
protected:
IFX_FileRead *m_pFileRead;
uint8_t* m_pBuffer;
FX_FILESIZE m_nStart;
size_t m_dwSize;
};
class CXML_Parser
{
public:
~CXML_Parser();
IFX_BufferRead* m_pDataAcc;
bool m_bOwnedStream;
FX_FILESIZE m_nOffset;
bool m_bSaveSpaceChars;
const uint8_t* m_pBuffer;
size_t m_dwBufferSize;
FX_FILESIZE m_nBufferOffset;
size_t m_dwIndex;
bool Init(uint8_t* pBuffer, size_t size);
bool Init(IFX_FileRead *pFileRead);
bool Init(IFX_BufferRead *pBuffer);
bool Init(bool bOwndedStream);
bool ReadNextBlock();
bool IsEOF();
bool HaveAvailData();
void SkipWhiteSpaces();
void GetName(CFX_ByteString& space, CFX_ByteString& name);
void GetAttrValue(CFX_WideString &value);
FX_DWORD GetCharRef();
void GetTagName(CFX_ByteString &space, CFX_ByteString &name, bool &bEndTag, bool bStartTag = false);
void SkipLiterals(const CFX_ByteStringC& str);
CXML_Element* ParseElement(CXML_Element* pParent, bool bStartTag = false);
void InsertContentSegment(bool bCDATA, const CFX_WideStringC& content, CXML_Element* pElement);
void InsertCDATASegment(CFX_UTF8Decoder& decoder, CXML_Element* pElement);
};
void FX_XML_SplitQualifiedName(const CFX_ByteStringC& bsFullName, CFX_ByteStringC &bsSpace, CFX_ByteStringC &bsName);
#endif // CORE_SRC_FXCRT_XML_INT_H_
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