HarfBuzz text shaping engine
http://harfbuzz.github.io/
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86 lines
2.6 KiB
86 lines
2.6 KiB
/* |
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* Copyright © 2010,2011 Google, Inc. |
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* |
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* This is part of HarfBuzz, a text shaping library. |
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* |
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* Permission is hereby granted, without written agreement and without |
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* license or royalty fees, to use, copy, modify, and distribute this |
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* software and its documentation for any purpose, provided that the |
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* above copyright notice and the following two paragraphs appear in |
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* all copies of this software. |
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* |
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
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* DAMAGE. |
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* |
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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* |
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* Google Author(s): Behdad Esfahbod |
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*/ |
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#include <hb.h> |
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#include <hb-ot.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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int |
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main (int argc, char **argv) |
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{ |
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if (argc != 3) { |
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fprintf (stderr, "usage: %s font-file text\n", argv[0]); |
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exit (1); |
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} |
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/* Create the face */ |
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hb_blob_t *blob = hb_blob_create_from_file_or_fail (argv[1]); |
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hb_face_t *face = hb_face_create (blob, 0 /* first face */); |
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hb_blob_destroy (blob); |
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blob = nullptr; |
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hb_font_t *font = hb_font_create (face); |
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hb_buffer_t *buffer = hb_buffer_create (); |
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hb_buffer_add_utf8 (buffer, argv[2], -1, 0, -1); |
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hb_buffer_guess_segment_properties (buffer); |
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hb_shape (font, buffer, NULL, 0); |
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hb_tag_t features[] = {HB_TAG('a','a','l','t'), HB_TAG_NONE}; |
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hb_set_t *lookup_indexes = hb_set_create (); |
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hb_ot_layout_collect_lookups (face, |
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HB_OT_TAG_GSUB, |
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NULL, NULL, |
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features, |
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lookup_indexes); |
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printf ("lookups %u\n", hb_set_get_population (lookup_indexes)); |
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unsigned count; |
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hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, &count); |
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for (unsigned i = 0; i < count; i++) |
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{ |
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unsigned alt_count = 0; |
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for (hb_codepoint_t lookup_index = HB_SET_VALUE_INVALID; |
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hb_set_next (lookup_indexes, &lookup_index);) |
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if ((alt_count = hb_ot_layout_lookup_get_glyph_alternates (face, |
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lookup_index, |
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info[i].codepoint, |
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0, |
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NULL, |
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NULL))) |
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break; |
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printf ("glyph %u alt count %u\n", info[i].codepoint, alt_count); |
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} |
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hb_set_destroy (lookup_indexes); |
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hb_buffer_destroy (buffer); |
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hb_font_destroy (font); |
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hb_face_destroy (face); |
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return 0; |
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}
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