The Tor Browser: gfx/harfbuzz/src/test.cc@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     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  */

    27 #ifdef HAVE_CONFIG_H

    28 #include "config.h"

    29 #endif

    31 #include "hb.h"

    33 #ifdef HAVE_GLIB

    34 # include <glib.h>

    35 # if !GLIB_CHECK_VERSION (2, 22, 0)

    36 #  define g_mapped_file_unref g_mapped_file_free

    37 # endif

    38 #endif

    39 #include <stdlib.h>

    40 #include <stdio.h>

    42 #ifdef HAVE_FREETYPE

    43 #include "hb-ft.h"

    44 #endif

    46 int

    47 main (int argc, char **argv)

    48 {

    49   hb_blob_t *blob = NULL;

    51   if (argc != 2) {

    52     fprintf (stderr, "usage: %s font-file.ttf\n", argv[0]);

    53     exit (1);

    54   }

    56   /* Create the blob */

    57   {

    58     const char *font_data;

    59     unsigned int len;

    60     hb_destroy_func_t destroy;

    61     void *user_data;

    62     hb_memory_mode_t mm;

    64 #ifdef HAVE_GLIB

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

    66     font_data = g_mapped_file_get_contents (mf);

    67     len = g_mapped_file_get_length (mf);

    68     destroy = (hb_destroy_func_t) g_mapped_file_unref;

    69     user_data = (void *) mf;

    70     mm = HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE;

    71 #else

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

    73     fseek (f, 0, SEEK_END);

    74     len = ftell (f);

    75     fseek (f, 0, SEEK_SET);

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

    77     if (!font_data) len = 0;

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

    79     destroy = free;

    80     user_data = (void *) font_data;

    81     fclose (f);

    82     mm = HB_MEMORY_MODE_WRITABLE;

    83 #endif

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

    86   }

    88   printf ("Opened font file %s: %u bytes long\n", argv[1], hb_blob_get_length (blob));

    90   /* Create the face */

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

    92   hb_blob_destroy (blob);

    93   blob = NULL;

    94   unsigned int upem = hb_face_get_upem (face);

    96   hb_font_t *font = hb_font_create (face);

    97   hb_font_set_scale (font, upem, upem);

    99 #ifdef HAVE_FREETYPE

   100   hb_ft_font_set_funcs (font);

   101 #endif

   103   hb_buffer_t *buffer = hb_buffer_create ();

   105   hb_buffer_add_utf8 (buffer, "\xe0\xa4\x95\xe0\xa5\x8d\xe0\xa4\xb0\xe0\xa5\x8d\xe0\xa4\x95", -1, 0, -1);

   106   hb_buffer_guess_segment_properties (buffer);

   108   hb_shape (font, buffer, NULL, 0);

   110   unsigned int count = hb_buffer_get_length (buffer);

   111   hb_glyph_info_t *infos = hb_buffer_get_glyph_infos (buffer, NULL);

   112   hb_glyph_position_t *positions = hb_buffer_get_glyph_positions (buffer, NULL);

   114   for (unsigned int i = 0; i < count; i++)

   115   {

   116     hb_glyph_info_t *info = &infos[i];

   117     hb_glyph_position_t *pos = &positions[i];

   119     printf ("cluster %d	glyph 0x%x at	(%d,%d)+(%d,%d)\n",

   120 	    info->cluster,

   121 	    info->codepoint,

   122 	    pos->x_offset,

   123 	    pos->x_offset,

   124 	    pos->x_advance,

   125 	    pos->y_advance);

   127   }

   129   hb_buffer_destroy (buffer);

   130   hb_font_destroy (font);

   131   hb_face_destroy (face);

   133   return 0;

   134 }

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