lily/pfb.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2004--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include <cstdlib>
  21 #include <cstdio>
  22 #include <cstring>
  23 using namespace std;
  24
  25 #include "program-option.hh"
  26 #include "source-file.hh"
  27 #include "memory-stream.hh"
  28 #include "open-type-font.hh"
  29 #include "main.hh"
  30 #include "warn.hh"
  31
  32 char *
  33 pfb2pfa (Byte const *pfb, int length)
  34 {
  35   char *out = (char*) malloc(sizeof(char));
  36   int olen = 0;
  37
  38   Byte const *p = pfb;
  39   while (p < pfb + length)
  40     {
  41       if (*p++ != 128)
  42         break;
  43
  44       Byte type = *p++;
  45       if (type == 3)
  46         break;
  47
  48       unsigned seglen
  49         = p[0] | (p[1] << 8)
  50         | (p[2] << 16) | (p[3] << 24);
  51
  52       p += 4;
  53       if (type == 1)
  54         {
  55           out = (char *)realloc (out, olen + seglen + 1);
  56           char *outp = out + olen;
  57           memcpy (outp, p, seglen);
  58           olen += seglen;
  59           p += seglen;
  60         }
  61       else if (type == 2)
  62         {
  63           unsigned outlength = (seglen * 2) + (seglen / 32) + 2;
  64
  65           out = (char *)realloc (out, olen + outlength + 1);
  66
  67           char *outp = out + olen;
  68           for (int i = seglen; i--;)
  69             {
  70               sprintf (outp, "%02x", *p++);
  71               outp += 2;
  72               if (! (i % 32))
  73                 *outp++ = '\n';
  74             }
  75
  76           olen = outp - out;
  77         }
  78     }
  79   out[olen] = 0;
  80
  81   return out;
  82 }
  83