pdf2swf/xpdf/Dict.h

   1 //========================================================================
   2 //
   3 // Dict.h
   4 //
   5 // Copyright 1996-2002 Glyph & Cog, LLC
   6 //
   7 //========================================================================
   8
   9 #ifndef DICT_H
  10 #define DICT_H
  11
  12 #ifdef __GNUC__
  13 #pragma interface
  14 #endif
  15
  16 #include "Object.h"
  17
  18 //------------------------------------------------------------------------
  19 // Dict
  20 //------------------------------------------------------------------------
  21
  22 struct DictEntry {
  23   char *key;
  24   Object val;
  25 };
  26
  27 class Dict {
  28 public:
  29
  30   // Constructor.
  31   Dict(XRef *xrefA);
  32
  33   // Destructor.
  34   ~Dict();
  35
  36   // Reference counting.
  37   int incRef() { return ++ref; }
  38   int decRef() { return --ref; }
  39
  40   // Get number of entries.
  41   int getLength() { return length; }
  42
  43   // Add an entry.  NB: does not copy key.
  44   void add(char *key, Object *val);
  45
  46   // Check if dictionary is of specified type.
  47   GBool is(char *type);
  48
  49   // Look up an entry and return the value.  Returns a null object
  50   // if <key> is not in the dictionary.
  51   Object *lookup(char *key, Object *obj);
  52   Object *lookupNF(char *key, Object *obj);
  53
  54   // Iterative accessors.
  55   char *getKey(int i);
  56   Object *getVal(int i, Object *obj);
  57   Object *getValNF(int i, Object *obj);
  58
  59   // Set the xref pointer.  This is only used in one special case: the
  60   // trailer dictionary, which is read before the xref table is
  61   // parsed.
  62   void setXRef(XRef *xrefA) { xref = xrefA; }
  63
  64 private:
  65
  66   XRef *xref;                   // the xref table for this PDF file
  67   DictEntry *entries;           // array of entries
  68   int size;                     // size of <entries> array
  69   int length;                   // number of entries in dictionary
  70   int ref;                      // reference count
  71
  72   DictEntry *find(char *key);
  73 };
  74
  75 #endif