lily/pfb.cc

   1 /*
   2   pfb.cc -- implement pfb conversion.
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2004--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include <cstdlib>
  10 #include <cstdio>
  11 #include <cstring>
  12
  13 #include "program-option.hh"
  14 #include "source-file.hh"
  15 #include "memory-stream.hh"
  16 #include "open-type-font.hh"
  17 #include "main.hh"
  18 #include "warn.hh"
  19
  20 char *
  21 pfb2pfa (Byte const *pfb, int length)
  22 {
  23   char *out = new char[1];
  24   int olen = 0;
  25
  26   Byte const *p = pfb;
  27   while (p < pfb + length)
  28     {
  29       if (*p++ != 128)
  30         break;
  31
  32       Byte type = *p++;
  33       if (type == 3)
  34         break;
  35
  36       unsigned seglen
  37         = p[0] | (p[1] << 8)
  38         | (p[2] << 16) | (p[3] << 24);
  39
  40       p += 4;
  41       if (type == 1)
  42         {
  43           out = (char *)realloc (out, olen + seglen + 1);
  44           char *outp = out + olen;
  45           memcpy (outp, p, seglen);
  46           olen += seglen;
  47           p += seglen;
  48         }
  49       else if (type == 2)
  50         {
  51           unsigned outlength = (seglen * 2) + (seglen / 32) + 2;
  52
  53           out = (char *)realloc (out, olen + outlength + 1);
  54
  55           char *outp = out + olen;
  56           for (int i = seglen; i--;)
  57             {
  58               sprintf (outp, "%02x", *p++);
  59               outp += 2;
  60               if (! (i % 32))
  61                 {
  62                   *outp++ = '\n';
  63                 }
  64             }
  65
  66           olen = outp - out;
  67         }
  68
  69     }
  70   out[olen] = 0;
  71
  72   return out;
  73 }
  74
  75 LY_DEFINE (ly_pfb_to_pfa, "ly:pfb->pfa",
  76            1, 0, 0, (SCM pfb_file_name),
  77            "Convert the contents of a PFB file to PFA.")
  78 {
  79   SCM_ASSERT_TYPE (scm_is_string (pfb_file_name), pfb_file_name,
  80                    SCM_ARG1, __FUNCTION__, "string");
  81
  82   String file_name = ly_scm2string (pfb_file_name);
  83   int len;
  84
  85   if (be_verbose_global)
  86     progress_indication ("[" + file_name);
  87
  88   char *str = gulp_file (file_name, &len);
  89   char *pfa = pfb2pfa ((Byte *)str, len);
  90
  91   SCM pfa_scm = scm_makfrom0str (pfa);
  92   free (pfa);
  93   delete str;
  94   if (be_verbose_global)
  95     progress_indication ("]");
  96
  97   return pfa_scm;
  98 }
  99
 100
 101 LY_DEFINE (ly_otf_to_cff, "ly:otf->cff",
 102            1, 0, 0, (SCM otf_file_name),
 103            "Convert the contents of a OTF file to CFF file, returning it as "
 104            " a string.")
 105 {
 106   SCM_ASSERT_TYPE (scm_is_string (otf_file_name), otf_file_name,
 107                    SCM_ARG1, __FUNCTION__, "string");
 108
 109   String file_name = ly_scm2string (otf_file_name);
 110   if (be_verbose_global)
 111     progress_indication ("[" + file_name);
 112
 113   FT_Face face = open_ft_face (file_name);
 114   String table = get_otf_table (face, "CFF ");
 115
 116   SCM asscm = scm_from_locale_stringn ((char *) table.get_bytes (),
 117                                        table.length ());
 118
 119   if (be_verbose_global)
 120     progress_indication ("]");
 121
 122   return asscm;
 123 }
 124