pdftops/BuiltinFont.cxx

   1 //========================================================================
   2 //
   3 // BuiltinFont.cc
   4 //
   5 // Copyright 2001-2003 Glyph & Cog, LLC
   6 //
   7 //========================================================================
   8
   9 #include <config.h>
  10
  11 #ifdef USE_GCC_PRAGMAS
  12 #pragma implementation
  13 #endif
  14
  15 #include <stdlib.h>
  16 #include <string.h>
  17 #include "gmem.h"
  18 #include "FontEncodingTables.h"
  19 #include "BuiltinFont.h"
  20
  21 //------------------------------------------------------------------------
  22
  23 BuiltinFontWidths::BuiltinFontWidths(BuiltinFontWidth *widths, int sizeA) {
  24   int i, h;
  25
  26   size = sizeA;
  27   tab = (BuiltinFontWidth **)gmallocn(size, sizeof(BuiltinFontWidth *));
  28   for (i = 0; i < size; ++i) {
  29     tab[i] = NULL;
  30   }
  31   for (i = 0; i < sizeA; ++i) {
  32     h = hash(widths[i].name);
  33     widths[i].next = tab[h];
  34     tab[h] = &widths[i];
  35   }
  36 }
  37
  38 BuiltinFontWidths::~BuiltinFontWidths() {
  39   gfree(tab);
  40 }
  41
  42 GBool BuiltinFontWidths::getWidth(char *name, Gushort *width) {
  43   int h;
  44   BuiltinFontWidth *p;
  45
  46   h = hash(name);
  47   for (p = tab[h]; p; p = p->next) {
  48     if (!strcmp(p->name, name)) {
  49       *width = p->width;
  50       return gTrue;
  51     }
  52   }
  53   return gFalse;
  54 }
  55
  56 int BuiltinFontWidths::hash(char *name) {
  57   char *p;
  58   unsigned int h;
  59
  60   h = 0;
  61   for (p = name; *p; ++p) {
  62     h = 17 * h + (int)(*p & 0xff);
  63   }
  64   return (int)(h % size);
  65 }