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      1 /*
      2  * Copyright  2010,2011  Google, Inc.
      3  *
      4  *  This is part of HarfBuzz, a text shaping library.
      5  *
      6  * Permission is hereby granted, without written agreement and without
      7  * license or royalty fees, to use, copy, modify, and distribute this
      8  * software and its documentation for any purpose, provided that the
      9  * above copyright notice and the following two paragraphs appear in
     10  * all copies of this software.
     11  *
     12  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
     13  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
     14  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
     15  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
     16  * DAMAGE.
     17  *
     18  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
     19  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
     20  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
     21  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
     22  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
     23  *
     24  * Google Author(s): Behdad Esfahbod
     25  */
     26 
     27 #include "hb-private.hh"
     28 
     29 #include "hb.h"
     30 #include "hb-ot.h"
     31 
     32 #ifdef HAVE_GLIB
     33 # include <glib.h>
     34 # if !GLIB_CHECK_VERSION (2, 22, 0)
     35 #  define g_mapped_file_unref g_mapped_file_free
     36 # endif
     37 #endif
     38 #include <stdlib.h>
     39 #include <stdio.h>
     40 
     41 #ifdef HAVE_FREETYPE
     42 #include "hb-ft.h"
     43 #endif
     44 
     45 int
     46 main (int argc, char **argv)
     47 {
     48   hb_blob_t *blob = nullptr;
     49 
     50   if (argc != 4 && argc != 5) {
     51     fprintf (stderr, "usage: %s font-file lookup-index first-glyph [second-glyph]\n", argv[0]);
     52     exit (1);
     53   }
     54 
     55   /* Create the blob */
     56   {
     57     const char *font_data;
     58     unsigned int len;
     59     hb_destroy_func_t destroy;
     60     void *user_data;
     61     hb_memory_mode_t mm;
     62 
     63 #ifdef HAVE_GLIB
     64     GMappedFile *mf = g_mapped_file_new (argv[1], false, nullptr);
     65     font_data = g_mapped_file_get_contents (mf);
     66     len = g_mapped_file_get_length (mf);
     67     destroy = (hb_destroy_func_t) g_mapped_file_unref;
     68     user_data = (void *) mf;
     69     mm = HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE;
     70 #else
     71     FILE *f = fopen (argv[1], "rb");
     72     fseek (f, 0, SEEK_END);
     73     len = ftell (f);
     74     fseek (f, 0, SEEK_SET);
     75     font_data = (const char *) malloc (len);
     76     if (!font_data) len = 0;
     77     len = fread ((char *) font_data, 1, len, f);
     78     destroy = free;
     79     user_data = (void *) font_data;
     80     fclose (f);
     81     mm = HB_MEMORY_MODE_WRITABLE;
     82 #endif
     83 
     84     blob = hb_blob_create (font_data, len, mm, user_data, destroy);
     85   }
     86 
     87   /* Create the face */
     88   hb_face_t *face = hb_face_create (blob, 0 /* first face */);
     89   hb_blob_destroy (blob);
     90   blob = nullptr;
     91 
     92   hb_font_t *font = hb_font_create (face);
     93 #ifdef HAVE_FREETYPE
     94   hb_ft_font_set_funcs (font);
     95 #endif
     96 
     97   unsigned int len = argc - 3;
     98   hb_codepoint_t glyphs[2];
     99   if (!hb_font_glyph_from_string (font, argv[3], -1, &glyphs[0]) ||
    100       (argc > 4 &&
    101        !hb_font_glyph_from_string (font, argv[4], -1, &glyphs[1])))
    102     return 2;
    103   return !hb_ot_layout_lookup_would_substitute (face, strtol (argv[2], nullptr, 0), glyphs, len, false);
    104 }
    105