lily/pfb.cc

   1 /*
   2   pfb.cc -- implement pfb conversion.
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2004--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include <cstdlib>
  10 #include <cstdio>
  11 #include <cstring>
  12 using namespace std;
  13
  14 #include "program-option.hh"
  15 #include "source-file.hh"
  16 #include "memory-stream.hh"
  17 #include "open-type-font.hh"
  18 #include "main.hh"
  19 #include "warn.hh"
  20
  21 char *
  22 pfb2pfa (Byte const *pfb, int length)
  23 {
  24   char *out = (char*) malloc(sizeof(char));
  25   int olen = 0;
  26
  27   Byte const *p = pfb;
  28   while (p < pfb + length)
  29     {
  30       if (*p++ != 128)
  31         break;
  32
  33       Byte type = *p++;
  34       if (type == 3)
  35         break;
  36
  37       unsigned seglen
  38         = p[0] | (p[1] << 8)
  39         | (p[2] << 16) | (p[3] << 24);
  40
  41       p += 4;
  42       if (type == 1)
  43         {
  44           out = (char *)realloc (out, olen + seglen + 1);
  45           char *outp = out + olen;
  46           memcpy (outp, p, seglen);
  47           olen += seglen;
  48           p += seglen;
  49         }
  50       else if (type == 2)
  51         {
  52           unsigned outlength = (seglen * 2) + (seglen / 32) + 2;
  53
  54           out = (char *)realloc (out, olen + outlength + 1);
  55
  56           char *outp = out + olen;
  57           for (int i = seglen; i--;)
  58             {
  59               sprintf (outp, "%02x", *p++);
  60               outp += 2;
  61               if (! (i % 32))
  62                 *outp++ = '\n';
  63             }
  64
  65           olen = outp - out;
  66         }
  67     }
  68   out[olen] = 0;
  69
  70   return out;
  71 }
  72