pdftops/FontEncoding.h

   1 //========================================================================
   2 //
   3 // FontEncoding.h
   4 //
   5 // Copyright 1999 Derek B. Noonburg
   6 //
   7 //========================================================================
   8
   9 #ifndef FONTENCODING_H
  10 #define FONTENCODING_H
  11
  12 #ifdef __GNUC__
  13 #pragma interface
  14 #endif
  15
  16 #include "gtypes.h"
  17
  18 //------------------------------------------------------------------------
  19 // FontEncoding
  20 //------------------------------------------------------------------------
  21
  22 #define fontEncHashSize 419
  23
  24 class FontEncoding {
  25 public:
  26
  27   // Construct an empty encoding.
  28   FontEncoding();
  29
  30   // Construct an encoding from an array of char names.
  31   FontEncoding(char **encodingA, int sizeA);
  32
  33   // Destructor.
  34   ~FontEncoding();
  35
  36   // Create a copy of the encoding.
  37   FontEncoding *copy() { return new FontEncoding(this); }
  38
  39   // Return number of codes in encoding, i.e., max code + 1.
  40   int getSize() { return size; }
  41
  42   // Add a char to the encoding.
  43   void addChar(int code, char *name);
  44
  45   // Return the character name associated with <code>.
  46   char *getCharName(int code) { return encoding[code]; }
  47
  48   // Return the code associated with <name>.
  49   int getCharCode(char *name);
  50
  51 private:
  52
  53   FontEncoding(FontEncoding *fontEnc);
  54   int hash(char *name);
  55   void addChar1(int code, char *name);
  56
  57   char **encoding;              // code --> name mapping
  58   int size;                     // number of codes
  59   GBool freeEnc;                // should we free the encoding array?
  60   short                         // name --> code hash table
  61     hashTab[fontEncHashSize];
  62 };
  63
  64 #endif