/*

 * Copyright © 2010,2011  Google, Inc.

 *

 *  This is part of HarfBuzz, a text shaping library.

 *

 * Permission is hereby granted, without written agreement and without

 * license or royalty fees, to use, copy, modify, and distribute this

 * software and its documentation for any purpose, provided that the

 * above copyright notice and the following two paragraphs appear in

 * all copies of this software.

 *

 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR

 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES

 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN

 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH

 * DAMAGE.

 *

 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,

 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND

 * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS

 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO

 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

 *

 * Google Author(s): Behdad Esfahbod

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include "hb.h"

#include "hb-ot.h"

#ifdef HAVE_GLIB

# include <glib.h>

# if !GLIB_CHECK_VERSION (2, 22, 0)

#  define g_mapped_file_unref g_mapped_file_free

# endif

#endif

#include <stdlib.h>

#include <stdio.h>

#ifdef HAVE_FREETYPE

#include "hb-ft.h"

#endif

int

main (int argc, char **argv)

{

  hb_blob_t *blob = NULL;

  if (argc != 4 && argc != 5) {

    fprintf (stderr, "usage: %s font-file lookup-index first-glyph [second-glyph]\n", argv[0]);

    exit (1);

  }

  /* Create the blob */

  {

    const char *font_data;

    unsigned int len;

    hb_destroy_func_t destroy;

    void *user_data;

    hb_memory_mode_t mm;

#ifdef HAVE_GLIB

    GMappedFile *mf = g_mapped_file_new (argv[1], false, NULL);

    font_data = g_mapped_file_get_contents (mf);

    len = g_mapped_file_get_length (mf);

    destroy = (hb_destroy_func_t) g_mapped_file_unref;

    user_data = (void *) mf;

    mm = HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE;

#else

    FILE *f = fopen (argv[1], "rb");

    fseek (f, 0, SEEK_END);

    len = ftell (f);

    fseek (f, 0, SEEK_SET);

    font_data = (const char *) malloc (len);

    if (!font_data) len = 0;

    len = fread ((char *) font_data, 1, len, f);

    destroy = free;

    user_data = (void *) font_data;

    fclose (f);

    mm = HB_MEMORY_MODE_WRITABLE;

#endif

    blob = hb_blob_create (font_data, len, mm, user_data, destroy);

  }

  /* Create the face */

  hb_face_t *face = hb_face_create (blob, 0 /* first face */);

  hb_blob_destroy (blob);

  blob = NULL;

  hb_font_t *font = hb_font_create (face);

#ifdef HAVE_FREETYPE

  hb_ft_font_set_funcs (font);

#endif

  unsigned int len = argc - 3;

  hb_codepoint_t glyphs[2];

  if (!hb_font_glyph_from_string (font, argv[3], -1, &glyphs[0]) ||

      (argc > 4 &&

       !hb_font_glyph_from_string (font, argv[4], -1, &glyphs[1])))

    return 2;

  return !hb_ot_layout_lookup_would_substitute (face, strtol (argv[2], NULL, 0), glyphs, len, false);

}