1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef _FXCRT_XML_INT_ 8 #define _FXCRT_XML_INT_ 9 class CXML_DataBufAcc : public IFX_BufferRead, public CFX_Object 10 { 11 public: 12 CXML_DataBufAcc(FX_LPCBYTE pBuffer, size_t size, IFX_Allocator* pAllocator = NULL) 13 : m_pAllocator(pAllocator) 14 , m_pBuffer(pBuffer) 15 , m_dwSize(size) 16 , m_dwCurPos(0) 17 { 18 } 19 virtual ~CXML_DataBufAcc() {} 20 virtual void Release() 21 { 22 if (m_pAllocator) { 23 FX_DeleteAtAllocator(this, m_pAllocator, CXML_DataBufAcc); 24 } else { 25 delete this; 26 } 27 } 28 virtual FX_BOOL IsEOF() 29 { 30 return m_dwCurPos >= m_dwSize; 31 } 32 virtual FX_FILESIZE GetPosition() 33 { 34 return (FX_FILESIZE)m_dwCurPos; 35 } 36 virtual size_t ReadBlock(void* buffer, size_t size) 37 { 38 return 0; 39 } 40 virtual FX_BOOL ReadNextBlock(FX_BOOL bRestart = FALSE) 41 { 42 if (bRestart) { 43 m_dwCurPos = 0; 44 } 45 if (m_dwCurPos < m_dwSize) { 46 m_dwCurPos = m_dwSize; 47 return TRUE; 48 } 49 return FALSE; 50 } 51 virtual FX_LPCBYTE GetBlockBuffer() 52 { 53 return m_pBuffer; 54 } 55 virtual size_t GetBlockSize() 56 { 57 return m_dwSize; 58 } 59 virtual FX_FILESIZE GetBlockOffset() 60 { 61 return 0; 62 } 63 protected: 64 IFX_Allocator* m_pAllocator; 65 FX_LPCBYTE m_pBuffer; 66 size_t m_dwSize; 67 size_t m_dwCurPos; 68 }; 69 #define FX_XMLDATASTREAM_BufferSize (32 * 1024) 70 class CXML_DataStmAcc : public IFX_BufferRead, public CFX_Object 71 { 72 public: 73 CXML_DataStmAcc(IFX_FileRead *pFileRead, IFX_Allocator* pAllocator = NULL) 74 : m_pAllocator(pAllocator) 75 , m_pFileRead(pFileRead) 76 , m_pBuffer(NULL) 77 , m_nStart(0) 78 , m_dwSize(0) 79 { 80 FXSYS_assert(m_pFileRead != NULL); 81 } 82 virtual ~CXML_DataStmAcc() 83 { 84 if (m_pBuffer) { 85 FX_Allocator_Free(m_pAllocator, m_pBuffer); 86 } 87 } 88 virtual void Release() 89 { 90 if (m_pAllocator) { 91 FX_DeleteAtAllocator(this, m_pAllocator, CXML_DataStmAcc); 92 } else { 93 delete this; 94 } 95 } 96 virtual FX_BOOL IsEOF() 97 { 98 return m_nStart + (FX_FILESIZE)m_dwSize >= m_pFileRead->GetSize(); 99 } 100 virtual FX_FILESIZE GetPosition() 101 { 102 return m_nStart + (FX_FILESIZE)m_dwSize; 103 } 104 virtual size_t ReadBlock(void* buffer, size_t size) 105 { 106 return 0; 107 } 108 virtual FX_BOOL ReadNextBlock(FX_BOOL bRestart = FALSE) 109 { 110 if (bRestart) { 111 m_nStart = 0; 112 } 113 FX_FILESIZE nLength = m_pFileRead->GetSize(); 114 m_nStart += (FX_FILESIZE)m_dwSize; 115 if (m_nStart >= nLength) { 116 return FALSE; 117 } 118 m_dwSize = (size_t)FX_MIN(FX_XMLDATASTREAM_BufferSize, nLength - m_nStart); 119 if (!m_pBuffer) { 120 m_pBuffer = FX_Allocator_Alloc(m_pAllocator, FX_BYTE, m_dwSize); 121 if (!m_pBuffer) { 122 return FALSE; 123 } 124 } 125 return m_pFileRead->ReadBlock(m_pBuffer, m_nStart, m_dwSize); 126 } 127 virtual FX_LPCBYTE GetBlockBuffer() 128 { 129 return (FX_LPCBYTE)m_pBuffer; 130 } 131 virtual size_t GetBlockSize() 132 { 133 return m_dwSize; 134 } 135 virtual FX_FILESIZE GetBlockOffset() 136 { 137 return m_nStart; 138 } 139 protected: 140 IFX_Allocator* m_pAllocator; 141 IFX_FileRead *m_pFileRead; 142 FX_LPBYTE m_pBuffer; 143 FX_FILESIZE m_nStart; 144 size_t m_dwSize; 145 }; 146 class CXML_Parser 147 { 148 public: 149 CXML_Parser(IFX_Allocator* pAllocator = NULL) : m_pAllocator(pAllocator) {} 150 ~CXML_Parser(); 151 IFX_Allocator* m_pAllocator; 152 IFX_BufferRead* m_pDataAcc; 153 FX_BOOL m_bOwnedStream; 154 FX_FILESIZE m_nOffset; 155 FX_BOOL m_bSaveSpaceChars; 156 FX_LPCBYTE m_pBuffer; 157 size_t m_dwBufferSize; 158 FX_FILESIZE m_nBufferOffset; 159 size_t m_dwIndex; 160 FX_BOOL Init(FX_LPBYTE pBuffer, size_t size); 161 FX_BOOL Init(IFX_FileRead *pFileRead); 162 FX_BOOL Init(IFX_BufferRead *pBuffer); 163 FX_BOOL Init(FX_BOOL bOwndedStream); 164 FX_BOOL ReadNextBlock(); 165 FX_BOOL IsEOF(); 166 FX_BOOL HaveAvailData(); 167 void SkipWhiteSpaces(); 168 void GetName(CFX_ByteStringL &space, CFX_ByteStringL &name); 169 void GetAttrValue(CFX_WideStringL &value); 170 FX_DWORD GetCharRef(); 171 void GetTagName(CFX_ByteStringL &space, CFX_ByteStringL &name, FX_BOOL &bEndTag, FX_BOOL bStartTag = FALSE); 172 void SkipLiterals(FX_BSTR str); 173 CXML_Element* ParseElement(CXML_Element* pParent, FX_BOOL bStartTag = FALSE); 174 void InsertContentSegment(FX_BOOL bCDATA, FX_WSTR content, CXML_Element* pElement); 175 void InsertCDATASegment(CFX_UTF8Decoder& decoder, CXML_Element* pElement); 176 }; 177 void FX_XML_SplitQualifiedName(FX_BSTR bsFullName, CFX_ByteStringC &bsSpace, CFX_ByteStringC &bsName); 178 #endif 179
