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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_FXCRT_XML_INT_H_
#define CORE_FXCRT_XML_INT_H_
#include <algorithm>
#include "core/fxcrt/include/fx_stream.h"
class CFX_UTF8Decoder;
class CXML_Element;
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) {}
~CXML_DataBufAcc() override {}
// IFX_BufferRead
void Release() override { delete this; }
FX_BOOL IsEOF() override { return m_dwCurPos >= m_dwSize; }
FX_FILESIZE GetPosition() override { return (FX_FILESIZE)m_dwCurPos; }
size_t ReadBlock(void* buffer, size_t size) override { return 0; }
FX_BOOL ReadNextBlock(FX_BOOL bRestart = FALSE) override {
if (bRestart) {
m_dwCurPos = 0;
}
if (m_dwCurPos < m_dwSize) {
m_dwCurPos = m_dwSize;
return TRUE;
}
return FALSE;
}
const uint8_t* GetBlockBuffer() override { return m_pBuffer; }
size_t GetBlockSize() override { return m_dwSize; }
FX_FILESIZE GetBlockOffset() override { return 0; }
protected:
const uint8_t* m_pBuffer;
size_t m_dwSize;
size_t m_dwCurPos;
};
class CXML_DataStmAcc : public IFX_BufferRead {
public:
explicit CXML_DataStmAcc(IFX_FileRead* pFileRead)
: m_pFileRead(pFileRead), m_pBuffer(NULL), m_nStart(0), m_dwSize(0) {
FXSYS_assert(m_pFileRead);
}
~CXML_DataStmAcc() override { FX_Free(m_pBuffer); }
void Release() override { delete this; }
FX_BOOL IsEOF() override {
return m_nStart + (FX_FILESIZE)m_dwSize >= m_pFileRead->GetSize();
}
FX_FILESIZE GetPosition() override {
return m_nStart + (FX_FILESIZE)m_dwSize;
}
size_t ReadBlock(void* buffer, size_t size) override { return 0; }
FX_BOOL ReadNextBlock(FX_BOOL bRestart = FALSE) override {
if (bRestart) {
m_nStart = 0;
}
FX_FILESIZE nLength = m_pFileRead->GetSize();
m_nStart += (FX_FILESIZE)m_dwSize;
if (m_nStart >= nLength) {
return FALSE;
}
static const FX_FILESIZE FX_XMLDATASTREAM_BufferSize = 32 * 1024;
m_dwSize = static_cast<size_t>(
std::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);
}
const uint8_t* GetBlockBuffer() override { return (const uint8_t*)m_pBuffer; }
size_t GetBlockSize() override { return m_dwSize; }
FX_FILESIZE GetBlockOffset() override { 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;
FX_BOOL m_bOwnedStream;
FX_FILESIZE m_nOffset;
FX_BOOL m_bSaveSpaceChars;
const uint8_t* m_pBuffer;
size_t m_dwBufferSize;
FX_FILESIZE m_nBufferOffset;
size_t m_dwIndex;
FX_BOOL Init(uint8_t* pBuffer, size_t size);
FX_BOOL Init(IFX_FileRead* pFileRead);
FX_BOOL Init(IFX_BufferRead* pBuffer);
FX_BOOL Init(FX_BOOL bOwndedStream);
FX_BOOL ReadNextBlock();
FX_BOOL IsEOF();
FX_BOOL HaveAvailData();
void SkipWhiteSpaces();
void GetName(CFX_ByteString& space, CFX_ByteString& name);
void GetAttrValue(CFX_WideString& value);
uint32_t GetCharRef();
void GetTagName(CFX_ByteString& space,
CFX_ByteString& name,
FX_BOOL& bEndTag,
FX_BOOL bStartTag = FALSE);
void SkipLiterals(const CFX_ByteStringC& str);
CXML_Element* ParseElement(CXML_Element* pParent, FX_BOOL bStartTag = FALSE);
void InsertContentSegment(FX_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_FXCRT_XML_INT_H_
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