Line data    Source code

       1             : /******************************************************************************
       2             :  * $Id$
       3             :  *
       4             :  * Project:  PDF driver
       5             :  * Purpose:  GDALDataset driver for PDF dataset.
       6             :  * Author:   Even Rouault, <even dot rouault at spatialys.com>
       7             :  *
       8             :  ******************************************************************************
       9             :  * Copyright (c) 2010-2013, Even Rouault <even dot rouault at spatialys.com>
      10             :  *
      11             :  * Permission is hereby granted, free of charge, to any person obtaining a
      12             :  * copy of this software and associated documentation files (the "Software"),
      13             :  * to deal in the Software without restriction, including without limitation
      14             :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      15             :  * and/or sell copies of the Software, and to permit persons to whom the
      16             :  * Software is furnished to do so, subject to the following conditions:
      17             :  *
      18             :  * The above copyright notice and this permission notice shall be included
      19             :  * in all copies or substantial portions of the Software.
      20             :  *
      21             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
      22             :  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      23             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      24             :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      25             :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      26             :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
      27             :  * DEALINGS IN THE SOFTWARE.
      28             :  ****************************************************************************/
      29             : 
      30             : #ifndef PDFIO_H_INCLUDED
      31             : #define PDFIO_H_INCLUDED
      32             : 
      33             : #include "cpl_vsi_virtual.h"
      34             : 
      35             : /************************************************************************/
      36             : /*                         VSIPDFFileStream                             */
      37             : /************************************************************************/
      38             : 
      39             : #define BUFFER_SIZE 1024
      40             : 
      41             : class VSIPDFFileStream final : public BaseStream
      42             : {
      43             :   public:
      44             :     VSIPDFFileStream(VSILFILE *f, const char *pszFilename, Object &&dictA);
      45             :     VSIPDFFileStream(VSIPDFFileStream *poParent, vsi_l_offset startA,
      46             :                      bool limitedA, vsi_l_offset lengthA, Object &&dictA);
      47             :     virtual ~VSIPDFFileStream();
      48             : 
      49             :     virtual BaseStream *copy() override;
      50             : 
      51             :     virtual Stream *makeSubStream(Goffset startA, bool limitedA,
      52             :                                   Goffset lengthA, Object &&dictA) override;
      53             :     virtual Goffset getPos() override;
      54             :     virtual Goffset getStart() override;
      55             : 
      56             :     virtual void setPos(Goffset pos, int dir = 0) override;
      57             :     virtual void moveStart(Goffset delta) override;
      58             : 
      59             :     virtual StreamKind getKind() const override;
      60             : 
      61             :     virtual GooString *getFileName() override;
      62             : 
      63             :     virtual int getChar() override;
      64             :     virtual int getUnfilteredChar() override;
      65             :     virtual int lookChar() override;
      66             : 
      67             :     virtual void reset() override;
      68             :     virtual void unfilteredReset() override;
      69             :     virtual void close() override;
      70             : 
      71           0 :     bool FoundLinearizedHint() const
      72             :     {
      73           0 :         return bFoundLinearizedHint;
      74             :     }
      75             : 
      76             :   private:
      77             :     virtual bool hasGetChars() override;
      78             :     virtual int getChars(int nChars, unsigned char *buffer) override;
      79             : 
      80             :     VSIPDFFileStream *poParent;
      81             :     GooString *poFilename;
      82             :     VSILFILE *f;
      83             :     vsi_l_offset nStart;
      84             :     bool bLimited;
      85             :     vsi_l_offset nLength;
      86             : 
      87             :     vsi_l_offset nCurrentPos;
      88             :     int bHasSavedPos;
      89             :     vsi_l_offset nSavedPos;
      90             : 
      91             :     GByte abyBuffer[BUFFER_SIZE];
      92             :     int nPosInBuffer;
      93             :     int nBufferLength;
      94             : 
      95             :     bool bFoundLinearizedHint = false;
      96             : 
      97             :     int FillBuffer();
      98             : };
      99             : 
     100             : #endif  // PDFIO_H_INCLUDED