/*
  This file is part of LilyPond, the GNU music typesetter.

  Copyright (C) 2004--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>

  LilyPond is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  LilyPond is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <cstdlib>
#include <cstdio>
#include <cstring>
using namespace std;

#include "program-option.hh"
#include "source-file.hh"
#include "memory-stream.hh"
#include "open-type-font.hh"
#include "main.hh"
#include "warn.hh"

char *
pfb2pfa (Byte const *pfb, int length)
{
  char *out = (char *) malloc (sizeof (char));
  long olen = 0;

  Byte const *p = pfb;
  while (p < pfb + length)
    {
      if (*p++ != 128)
        break;

      Byte type = *p++;
      if (type == 3)
        break;

      unsigned seglen
        = p[0] | (p[1] << 8)
          | (p[2] << 16) | (p[3] << 24);

      p += 4;
      if (type == 1)
        {
          out = (char *)realloc (out, olen + seglen + 1);
          char *outp = out + olen;
          memcpy (outp, p, seglen);
          olen += seglen;
          p += seglen;
        }
      else if (type == 2)
        {
          unsigned outlength = (seglen * 2) + (seglen / 32) + 2;

          out = (char *)realloc (out, olen + outlength + 1);

          char *outp = out + olen;
          for (int i = seglen; i--;)
            {
              sprintf (outp, "%02x", *p++);
              outp += 2;
              if (! (i % 32))
                *outp++ = '\n';
            }

          olen = outp - out;
        }
    }
  out[olen] = 0;

  return out;
}