source/libs/poppler/poppler-src/poppler/Parser.h

   1 //========================================================================
   2 //
   3 // Parser.h
   4 //
   5 // Copyright 1996-2003 Glyph & Cog, LLC
   6 //
   7 //========================================================================
   8
   9 //========================================================================
  10 //
  11 // Modified under the Poppler project - http://poppler.freedesktop.org
  12 //
  13 // All changes made under the Poppler project to this file are licensed
  14 // under GPL version 2 or later
  15 //
  16 // Copyright (C) 2006, 2010, 2013 Albert Astals Cid <aacid@kde.org>
  17 // Copyright (C) 2012 Hib Eris <hib@hiberis.nl>
  18 // Copyright (C) 2013 Adrian Johnson <ajohnson@redneon.com>
  19 // Copyright (C) 2013 Thomas Freitag <Thomas.Freitag@alfa.de>
  20 //
  21 // To see a description of the changes please see the Changelog file that
  22 // came with your tarball or type make ChangeLog if you are building from git
  23 //
  24 //========================================================================
  25
  26 #ifndef PARSER_H
  27 #define PARSER_H
  28
  29 #ifdef USE_GCC_PRAGMAS
  30 #pragma interface
  31 #endif
  32
  33 #include "Lexer.h"
  34
  35 //------------------------------------------------------------------------
  36 // Parser
  37 //------------------------------------------------------------------------
  38
  39 class Parser {
  40 public:
  41
  42   // Constructor.
  43   Parser(XRef *xrefA, Lexer *lexerA, GBool allowStreamsA);
  44
  45   // Destructor.
  46   ~Parser();
  47
  48   // Get the next object from the input stream.  If <simpleOnly> is
  49   // true, do not parse compound objects (arrays, dictionaries, or
  50   // streams).
  51   Object *getObj(Object *obj, GBool simpleOnly = gFalse,
  52      Guchar *fileKey = NULL,
  53                  CryptAlgorithm encAlgorithm = cryptRC4, int keyLength = 0,
  54                  int objNum = 0, int objGen = 0, int recursion = 0,
  55                  GBool strict = gFalse);
  56
  57   Object *getObj(Object *obj, int recursion);
  58
  59   // Get stream.
  60   Stream *getStream() { return lexer->getStream(); }
  61
  62   // Get current position in file.
  63   Goffset getPos() { return lexer->getPos(); }
  64
  65 private:
  66
  67   XRef *xref;                   // the xref table for this PDF file
  68   Lexer *lexer;                 // input stream
  69   GBool allowStreams;           // parse stream objects?
  70   Object buf1, buf2;            // next two tokens
  71   int inlineImg;                // set when inline image data is encountered
  72
  73   Stream *makeStream(Object *dict, Guchar *fileKey,
  74                      CryptAlgorithm encAlgorithm, int keyLength,
  75                      int objNum, int objGen, int recursion,
  76                      GBool strict);
  77   void shift(int objNum = -1);
  78   void shift(const char *cmdA, int objNum);
  79 };
  80
  81 #endif
  82