xfa/src/fgas/src/crt/fx_stream.h

   1 // Copyright 2014 PDFium Authors. All rights reserved.\r
   2 // Use of this source code is governed by a BSD-style license that can be\r
   3 // found in the LICENSE file.\r
   4 \r
   5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com\r
   6 \r
   7 #ifndef _FX_STREAM_IMP\r
   8 #define _FX_STREAM_IMP\r
   9 class CFX_StreamImp;\r
  10 class CFX_FileStreamImp;\r
  11 class CFX_BufferStreamImp;\r
  12 class CFX_FileReadStreamImp;\r
  13 class CFX_BufferReadStreamImp;\r
  14 class CFX_FileWriteStreamImp;\r
  15 class CFX_Stream;\r
  16 class CFX_TextStream;\r
  17 class CFX_FileRead;\r
  18 class CFX_FileWrite;\r
  19 class CFX_BufferAccImp;\r
  20 class CFX_StreamImp : public CFX_ThreadLock, public CFX_Object\r
  21 {\r
  22 public:\r
  23     virtual void                        Release()\r
  24     {\r
  25         delete this;\r
  26     }\r
  27     virtual FX_DWORD            GetAccessModes() const\r
  28     {\r
  29         return m_dwAccess;\r
  30     }\r
  31     virtual FX_INT32            GetLength() const = 0;\r
  32     virtual FX_INT32            Seek(FX_STREAMSEEK eSeek, FX_INT32 iOffset) = 0;\r
  33     virtual FX_INT32            GetPosition() = 0;\r
  34     virtual FX_BOOL                     IsEOF() const = 0;\r
  35     virtual FX_INT32            ReadData(FX_LPBYTE pBuffer, FX_INT32 iBufferSize) = 0;\r
  36     virtual FX_INT32            ReadString(FX_LPWSTR pStr, FX_INT32 iMaxLength, FX_BOOL &bEOS) = 0;\r
  37     virtual FX_INT32            WriteData(FX_LPCBYTE pBuffer, FX_INT32 iBufferSize) = 0;\r
  38     virtual FX_INT32            WriteString(FX_LPCWSTR pStr, FX_INT32 iLength) = 0;\r
  39     virtual void                        Flush() = 0;\r
  40     virtual FX_BOOL                     SetLength(FX_INT32 iLength) = 0;\r
  41 protected:\r
  42     CFX_StreamImp();\r
  43     virtual ~CFX_StreamImp() {}\r
  44     FX_DWORD                            m_dwAccess;\r
  45 };\r
  46 class CFX_FileStreamImp : public CFX_StreamImp\r
  47 {\r
  48 public:\r
  49     CFX_FileStreamImp();\r
  50     virtual ~CFX_FileStreamImp();\r
  51     FX_BOOL                     LoadFile(FX_LPCWSTR pszSrcFileName, FX_DWORD dwAccess);\r
  52     virtual FX_INT32            GetLength() const;\r
  53     virtual FX_INT32            Seek(FX_STREAMSEEK eSeek, FX_INT32 iOffset);\r
  54     virtual FX_INT32            GetPosition();\r
  55     virtual FX_BOOL                     IsEOF() const;\r
  56     virtual FX_INT32            ReadData(FX_LPBYTE pBuffer, FX_INT32 iBufferSize);\r
  57     virtual FX_INT32            ReadString(FX_LPWSTR pStr, FX_INT32 iMaxLength, FX_BOOL &bEOS);\r
  58     virtual FX_INT32            WriteData(FX_LPCBYTE pBuffer, FX_INT32 iBufferSize);\r
  59     virtual FX_INT32            WriteString(FX_LPCWSTR pStr, FX_INT32 iLength);\r
  60     virtual void                        Flush();\r
  61     virtual FX_BOOL                     SetLength(FX_INT32 iLength);\r
  62 protected:\r
  63     FXSYS_FILE  *m_hFile;\r
  64     FX_INT32    m_iLength;\r
  65 };\r
  66 class CFX_BufferStreamImp : public CFX_StreamImp\r
  67 {\r
  68 public:\r
  69     CFX_BufferStreamImp();\r
  70     virtual ~CFX_BufferStreamImp() {}\r
  71     FX_BOOL                     LoadBuffer(FX_LPBYTE pData, FX_INT32 iTotalSize, FX_DWORD dwAccess);\r
  72     virtual FX_INT32            GetLength() const;\r
  73     virtual FX_INT32            Seek(FX_STREAMSEEK eSeek, FX_INT32 iOffset);\r
  74     virtual FX_INT32            GetPosition();\r
  75     virtual FX_BOOL                     IsEOF() const;\r
  76     virtual FX_INT32            ReadData(FX_LPBYTE pBuffer, FX_INT32 iBufferSize);\r
  77     virtual FX_INT32            ReadString(FX_LPWSTR pStr, FX_INT32 iMaxLength, FX_BOOL &bEOS);\r
  78     virtual FX_INT32            WriteData(FX_LPCBYTE pBuffer, FX_INT32 iBufferSize);\r
  79     virtual FX_INT32            WriteString(FX_LPCWSTR pStr, FX_INT32 iLength);\r
  80     virtual void                        Flush() {}\r
  81     virtual FX_BOOL                     SetLength(FX_INT32 iLength)\r
  82     {\r
  83         return FALSE;\r
  84     }\r
  85 protected:\r
  86     FX_LPBYTE   m_pData;\r
  87     FX_INT32    m_iTotalSize;\r
  88     FX_INT32    m_iPosition;\r
  89     FX_INT32    m_iLength;\r
  90 };\r
  91 class CFX_FileReadStreamImp : public CFX_StreamImp\r
  92 {\r
  93 public:\r
  94     CFX_FileReadStreamImp();\r
  95     virtual ~CFX_FileReadStreamImp() {}\r
  96     FX_BOOL                     LoadFileRead(IFX_FileRead *pFileRead, FX_DWORD dwAccess);\r
  97     virtual FX_INT32            GetLength() const;\r
  98     virtual FX_INT32            Seek(FX_STREAMSEEK eSeek, FX_INT32 iOffset);\r
  99     virtual FX_INT32            GetPosition()\r
 100     {\r
 101         return m_iPosition;\r
 102     }\r
 103     virtual FX_BOOL                     IsEOF() const;\r
 104 \r
 105     virtual FX_INT32            ReadData(FX_LPBYTE pBuffer, FX_INT32 iBufferSize);\r
 106     virtual FX_INT32            ReadString(FX_LPWSTR pStr, FX_INT32 iMaxLength, FX_BOOL &bEOS);\r
 107     virtual FX_INT32            WriteData(FX_LPCBYTE pBuffer, FX_INT32 iBufferSize)\r
 108     {\r
 109         return 0;\r
 110     }\r
 111     virtual FX_INT32            WriteString(FX_LPCWSTR pStr, FX_INT32 iLength)\r
 112     {\r
 113         return 0;\r
 114     }\r
 115     virtual void                        Flush() {}\r
 116     virtual FX_BOOL                     SetLength(FX_INT32 iLength)\r
 117     {\r
 118         return FALSE;\r
 119     }\r
 120 protected:\r
 121     IFX_FileRead                        *m_pFileRead;\r
 122     FX_INT32                            m_iPosition;\r
 123     FX_INT32                            m_iLength;\r
 124 };\r
 125 class CFX_BufferReadStreamImp : public CFX_StreamImp\r
 126 {\r
 127 public:\r
 128     CFX_BufferReadStreamImp();\r
 129     ~CFX_BufferReadStreamImp();\r
 130     FX_BOOL                     LoadBufferRead(IFX_BufferRead *pBufferRead, FX_INT32 iFileSize, FX_DWORD dwAccess, FX_BOOL bReleaseBufferRead);\r
 131 \r
 132     virtual FX_INT32            GetLength() const;\r
 133     virtual FX_INT32            Seek(FX_STREAMSEEK eSeek, FX_INT32 iOffset);\r
 134     virtual FX_INT32            GetPosition()\r
 135     {\r
 136         return m_iPosition;\r
 137     }\r
 138     virtual FX_BOOL                     IsEOF() const;\r
 139 \r
 140     virtual FX_INT32            ReadData(FX_LPBYTE pBuffer, FX_INT32 iBufferSize);\r
 141     virtual FX_INT32            ReadString(FX_LPWSTR pStr, FX_INT32 iMaxLength, FX_BOOL &bEOS);\r
 142     virtual FX_INT32            WriteData(FX_LPCBYTE pBuffer, FX_INT32 iBufferSize)\r
 143     {\r
 144         return 0;\r
 145     }\r
 146     virtual FX_INT32            WriteString(FX_LPCWSTR pStr, FX_INT32 iLength)\r
 147     {\r
 148         return 0;\r
 149     }\r
 150     virtual void                        Flush() {}\r
 151     virtual FX_BOOL                     SetLength(FX_INT32 iLength)\r
 152     {\r
 153         return FALSE;\r
 154     }\r
 155 private:\r
 156     IFX_BufferRead                      *m_pBufferRead;\r
 157     FX_BOOL                                     m_bReleaseBufferRead;\r
 158     FX_INT32                            m_iPosition;\r
 159     FX_INT32                            m_iBufferSize;\r
 160 };\r
 161 class CFX_FileWriteStreamImp : public CFX_StreamImp\r
 162 {\r
 163 public:\r
 164     CFX_FileWriteStreamImp();\r
 165     virtual ~CFX_FileWriteStreamImp() {}\r
 166     FX_BOOL                     LoadFileWrite(IFX_FileWrite *pFileWrite, FX_DWORD dwAccess);\r
 167     virtual FX_INT32            GetLength() const;\r
 168     virtual FX_INT32            Seek(FX_STREAMSEEK eSeek, FX_INT32 iOffset);\r
 169     virtual FX_INT32            GetPosition()\r
 170     {\r
 171         return m_iPosition;\r
 172     }\r
 173     virtual FX_BOOL                     IsEOF() const;\r
 174     virtual FX_INT32            ReadData(FX_LPBYTE pBuffer, FX_INT32 iBufferSize)\r
 175     {\r
 176         return 0;\r
 177     }\r
 178     virtual FX_INT32            ReadString(FX_LPWSTR pStr, FX_INT32 iMaxLength, FX_BOOL &bEOS)\r
 179     {\r
 180         return 0;\r
 181     }\r
 182     virtual FX_INT32            WriteData(FX_LPCBYTE pBuffer, FX_INT32 iBufferSize);\r
 183     virtual FX_INT32            WriteString(FX_LPCWSTR pStr, FX_INT32 iLength);\r
 184     virtual void                        Flush();\r
 185     virtual FX_BOOL                     SetLength(FX_INT32 iLength)\r
 186     {\r
 187         return FALSE;\r
 188     }\r
 189 protected:\r
 190     IFX_FileWrite                       *m_pFileWrite;\r
 191     FX_INT32                            m_iPosition;\r
 192 };\r
 193 enum FX_STREAMTYPE {\r
 194     FX_SREAMTYPE_Unknown        =  0,\r
 195     FX_STREAMTYPE_File                  ,\r
 196     FX_STREAMTYPE_Buffer                ,\r
 197     FX_STREAMTYPE_Stream                ,\r
 198     FX_STREAMTYPE_BufferRead    ,\r
 199 };\r
 200 class CFX_Stream : public IFX_Stream, public CFX_ThreadLock, public CFX_Object\r
 201 {\r
 202 public:\r
 203     CFX_Stream();\r
 204     ~CFX_Stream();\r
 205     FX_BOOL                     LoadFile(FX_LPCWSTR pszSrcFileName, FX_DWORD dwAccess);\r
 206     FX_BOOL                     LoadBuffer(FX_LPBYTE pData, FX_INT32 iTotalSize, FX_DWORD dwAccess);\r
 207     FX_BOOL                     LoadFileRead(IFX_FileRead *pFileRead, FX_DWORD dwAccess);\r
 208     FX_BOOL                     LoadFileWrite(IFX_FileWrite *pFileWrite, FX_DWORD dwAccess);\r
 209     FX_BOOL                     LoadBufferRead(IFX_BufferRead *pBufferRead, FX_INT32 iFileSize, FX_DWORD dwAccess, FX_BOOL bReleaseBufferRead);\r
 210     virtual void                        Release();\r
 211     virtual IFX_Stream*         Retain();\r
 212     virtual FX_DWORD            GetAccessModes() const\r
 213     {\r
 214         return m_dwAccess;\r
 215     }\r
 216     virtual FX_INT32            GetLength() const;\r
 217     virtual FX_INT32            Seek(FX_STREAMSEEK eSeek, FX_INT32 iOffset);\r
 218     virtual FX_INT32            GetPosition();\r
 219     virtual FX_BOOL                     IsEOF() const;\r
 220     virtual FX_INT32            ReadData(FX_LPBYTE pBuffer, FX_INT32 iBufferSize);\r
 221     virtual FX_INT32            ReadString(FX_LPWSTR pStr, FX_INT32 iMaxLength, FX_BOOL &bEOS, FX_INT32 const *pByteSize = NULL);\r
 222     virtual FX_INT32            WriteData(FX_LPCBYTE pBuffer, FX_INT32 iBufferSize);\r
 223     virtual FX_INT32            WriteString(FX_LPCWSTR pStr, FX_INT32 iLength);\r
 224     virtual void                        Flush();\r
 225     virtual FX_BOOL                     SetLength(FX_INT32 iLength);\r
 226     virtual FX_INT32            GetBOM(FX_BYTE bom[4]) const;\r
 227     virtual FX_WORD                     GetCodePage() const;\r
 228     virtual FX_WORD                     SetCodePage(FX_WORD wCodePage);\r
 229     virtual void                        Lock()\r
 230     {\r
 231         CFX_ThreadLock::Lock();\r
 232     }\r
 233     virtual void                        Unlock()\r
 234     {\r
 235         CFX_ThreadLock::Unlock();\r
 236     }\r
 237     virtual IFX_Stream*         CreateSharedStream(FX_DWORD dwAccess, FX_INT32 iOffset, FX_INT32 iLength);\r
 238 protected:\r
 239     FX_STREAMTYPE                       m_eStreamType;\r
 240     CFX_StreamImp                       *m_pStreamImp;\r
 241     FX_DWORD                            m_dwAccess;\r
 242     FX_INT32                            m_iTotalSize;\r
 243     FX_INT32                            m_iPosition;\r
 244     FX_INT32                            m_iStart;\r
 245     FX_INT32                            m_iLength;\r
 246     FX_INT32                            m_iRefCount;\r
 247 };\r
 248 class CFX_TextStream : public IFX_Stream, public CFX_ThreadLock, public CFX_Object\r
 249 {\r
 250 public:\r
 251     CFX_TextStream(IFX_Stream *pStream, FX_BOOL bDelStream);\r
 252     ~CFX_TextStream();\r
 253     virtual void                                Release();\r
 254     virtual IFX_Stream*                 Retain();\r
 255 \r
 256     virtual FX_DWORD                    GetAccessModes() const;\r
 257     virtual FX_INT32                    GetLength() const;\r
 258     virtual FX_INT32                    Seek(FX_STREAMSEEK eSeek, FX_INT32 iOffset);\r
 259     virtual FX_INT32                    GetPosition();\r
 260     virtual FX_BOOL                             IsEOF() const;\r
 261 \r
 262     virtual FX_INT32                    ReadData(FX_LPBYTE pBuffer, FX_INT32 iBufferSize);\r
 263     virtual FX_INT32                    ReadString(FX_LPWSTR pStr, FX_INT32 iMaxLength, FX_BOOL &bEOS, FX_INT32 const *pByteSize = NULL);\r
 264     virtual FX_INT32                    WriteData(FX_LPCBYTE pBuffer, FX_INT32 iBufferSize);\r
 265     virtual FX_INT32                    WriteString(FX_LPCWSTR pStr, FX_INT32 iLength);\r
 266     virtual void                                Flush();\r
 267     virtual FX_BOOL                             SetLength(FX_INT32 iLength);\r
 268 \r
 269     virtual FX_INT32                    GetBOM(FX_BYTE bom[4]) const;\r
 270     virtual FX_WORD                             GetCodePage() const;\r
 271     virtual FX_WORD                             SetCodePage(FX_WORD wCodePage);\r
 272 \r
 273     virtual void                                Lock()\r
 274     {\r
 275         CFX_ThreadLock::Lock();\r
 276     }\r
 277     virtual void                                Unlock()\r
 278     {\r
 279         CFX_ThreadLock::Unlock();\r
 280     }\r
 281 \r
 282     virtual IFX_Stream*                 CreateSharedStream(FX_DWORD dwAccess, FX_INT32 iOffset, FX_INT32 iLength);\r
 283 protected:\r
 284     FX_WORD             m_wCodePage;\r
 285     FX_WORD             m_wBOMLength;\r
 286     FX_DWORD    m_dwBOM;\r
 287     FX_LPBYTE   m_pBuf;\r
 288     FX_INT32    m_iBufSize;\r
 289     FX_BOOL             m_bDelStream;\r
 290     IFX_Stream  *m_pStreamImp;\r
 291     FX_INT32    m_iRefCount;\r
 292     void                InitStream();\r
 293 };\r
 294 #ifdef FX_FILESIZE\r
 295 class CFGAS_FileRead : public IFX_FileRead, public CFX_Object\r
 296 {\r
 297 public:\r
 298     CFGAS_FileRead(IFX_Stream *pStream, FX_BOOL bReleaseStream);\r
 299     virtual ~CFGAS_FileRead();\r
 300     virtual void                        Release()\r
 301     {\r
 302         delete this;\r
 303     }\r
 304     virtual FX_FILESIZE         GetSize();\r
 305     virtual FX_BOOL                     ReadBlock(void* buffer, FX_FILESIZE offset, size_t size);\r
 306 protected:\r
 307     FX_BOOL                                     m_bReleaseStream;\r
 308     IFX_Stream                          *m_pStream;\r
 309 };\r
 310 #else\r
 311 class CFGAS_FileRead : public IFX_FileRead, public CFX_Object\r
 312 {\r
 313 public:\r
 314     CFGAS_FileRead(IFX_Stream *pStream, FX_BOOL bReleaseStream);\r
 315     virtual ~CFGAS_FileRead();\r
 316 \r
 317     virtual void                        Release()\r
 318     {\r
 319         delete this;\r
 320     }\r
 321     virtual FX_DWORD            GetSize();\r
 322     virtual FX_BOOL                     ReadBlock(void* buffer, FX_DWORD offset, FX_DWORD size);\r
 323 \r
 324 protected:\r
 325     FX_BOOL                                     m_bReleaseStream;\r
 326     IFX_Stream                          *m_pStream;\r
 327 };\r
 328 #endif\r
 329 #ifdef FX_FILESIZE\r
 330 class CFX_BufferAccImp : public IFX_FileRead, public CFX_Object\r
 331 {\r
 332 public:\r
 333     CFX_BufferAccImp(IFX_BufferRead *pBufferRead, FX_FILESIZE iFileSize, FX_BOOL bReleaseStream);\r
 334     virtual ~CFX_BufferAccImp();\r
 335     virtual void                        Release()\r
 336     {\r
 337         delete this;\r
 338     }\r
 339     virtual FX_FILESIZE         GetSize();\r
 340     virtual FX_BOOL                     ReadBlock(void* buffer, FX_FILESIZE offset, size_t size);\r
 341 protected:\r
 342     IFX_BufferRead                      *m_pBufferRead;\r
 343     FX_BOOL                                     m_bReleaseStream;\r
 344     FX_FILESIZE                         m_iBufSize;\r
 345 };\r
 346 #else\r
 347 class CFX_BufferAccImp : public IFX_FileRead, public CFX_Object\r
 348 {\r
 349 public:\r
 350     CFX_BufferAccImp(IFX_BufferRead *pBufferRead, FX_INT32 iFileSize, FX_BOOL bReleaseStream);\r
 351     virtual ~CFX_BufferAccImp();\r
 352 \r
 353     virtual void                        Release()\r
 354     {\r
 355         delete this;\r
 356     }\r
 357     virtual FX_DWORD            GetSize();\r
 358     virtual FX_BOOL                     ReadBlock(void* buffer, FX_DWORD offset, FX_DWORD size);\r
 359 \r
 360 protected:\r
 361     IFX_BufferRead                      *m_pBufferRead;\r
 362     FX_BOOL                                     m_bReleaseStream;\r
 363     FX_INT32                            m_iBufSize;\r
 364 };\r
 365 #endif\r
 366 #ifdef FX_FILESIZE\r
 367 class CFGAS_FileWrite : public IFX_FileWrite, public CFX_Object\r
 368 {\r
 369 public:\r
 370     CFGAS_FileWrite(IFX_Stream *pStream, FX_BOOL bReleaseStream);\r
 371     virtual ~CFGAS_FileWrite();\r
 372     virtual void                        Release()\r
 373     {\r
 374         delete this;\r
 375     }\r
 376     virtual FX_FILESIZE         GetSize();\r
 377     virtual FX_BOOL                     Flush();\r
 378     virtual     FX_BOOL                 WriteBlock(const void* pData, size_t size);\r
 379     virtual     FX_BOOL                 WriteBlock(const void* pData, FX_FILESIZE offset, size_t size);\r
 380 protected:\r
 381     IFX_Stream                          *m_pStream;\r
 382     FX_BOOL                                     m_bReleaseStream;\r
 383 };\r
 384 #else\r
 385 class CFGAS_FileWrite : public IFX_FileWrite, public CFX_Object\r
 386 {\r
 387 public:\r
 388     CFGAS_FileWrite(IFX_Stream *pStream, FX_BOOL bReleaseStream);\r
 389     virtual ~CFGAS_FileWrite();\r
 390 \r
 391     virtual void                        Release()\r
 392     {\r
 393         delete this;\r
 394     }\r
 395     virtual FX_DWORD            GetSize();\r
 396     virtual FX_DWORD            Flush();\r
 397     virtual     FX_BOOL                 WriteBlock(const void* pData, FX_DWORD size);\r
 398     virtual     FX_BOOL                 WriteBlock(const void* pData, FX_DWORD offset, FX_DWORD size);\r
 399 \r
 400 protected:\r
 401     IFX_Stream                          *m_pStream;\r
 402     FX_BOOL                                     m_bReleaseStream;\r
 403 };\r
 404 #endif\r
 405 #endif\r