apdf/xpdf/Parser.h

   1 //========================================================================
   2 //
   3 // Parser.h
   4 //
   5 // Copyright 1996-2003 Glyph & Cog, LLC
   6 //
   7 //========================================================================
   8 //
   9 // EL (01/2000): added the 'cutObj' parameter, to help handling
  10 //               linearized files.
  11 //
  12 #ifndef PARSER_H
  13 #define PARSER_H
  14
  15 #include <aconf.h>
  16
  17 #ifdef USE_GCC_PRAGMAS
  18 #pragma interface
  19 #endif
  20
  21 #include "Lexer.h"
  22
  23 //------------------------------------------------------------------------
  24 // Parser
  25 //------------------------------------------------------------------------
  26
  27 class Parser {
  28 public:
  29
  30   // Constructor.
  31   Parser(XRef *xrefA, Lexer *lexerA, GBool cutObj = gFalse);
  32
  33   // Destructor.
  34   ~Parser();
  35
  36   // Get the next object from the input stream.
  37   Object *getObj(Object *obj,
  38                 Guchar *fileKey = NULL, int keyLength = 0,
  39                 int objNum = 0, int objGen = 0);
  40
  41   // Get stream.
  42   Stream *getStream() { return lexer->getStream(); }
  43
  44   // Get current position in file.
  45   int getPos() { return lexer->getPos(); }
  46
  47 private:
  48
  49   XRef *xref;                   // the xref table for this PDF file
  50   Lexer *lexer;                 // input stream
  51   Object buf1, buf2;            // next two tokens
  52   int inlineImg;                // set when inline image data is encountered
  53
  54   Stream *makeStream(Object *dict);
  55   void shift();
  56   GBool cutObj;
  57 };
  58
  59 #endif
  60