136 lines
3.3 KiB
C++
136 lines
3.3 KiB
C++
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/*
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* Copyright © 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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#ifndef FACE_OPTIONS_HH
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#define FACE_OPTIONS_HH
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#include "options.hh"
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struct face_options_t
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{
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void add_options (option_parser_t *parser);
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hb_blob_t *get_blob () const;
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hb_face_t *get_face () const;
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static struct cache_t
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{
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~cache_t ()
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{
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free ((void *) font_path);
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hb_blob_destroy (blob);
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hb_face_destroy (face);
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}
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const char *font_path = nullptr;
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hb_blob_t *blob = nullptr;
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unsigned face_index = (unsigned) -1;
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hb_face_t *face = nullptr;
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} cache;
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char *font_file = nullptr;
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unsigned face_index = 0;
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private:
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mutable hb_face_t *face = nullptr;
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};
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face_options_t::cache_t face_options_t::cache {};
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hb_blob_t *
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face_options_t::get_blob () const
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{
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// XXX This does the job for now; will move to post_parse.
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return cache.blob;
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}
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hb_face_t *
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face_options_t::get_face () const
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{
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if (face)
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return face;
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if (!font_file)
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fail (true, "No font file set");
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const char *font_path = font_file;
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if (0 == strcmp (font_path, "-"))
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{
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#if defined(_WIN32) || defined(__CYGWIN__)
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setmode (fileno (stdin), O_BINARY);
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font_path = "STDIN";
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#else
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font_path = "/dev/stdin";
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#endif
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}
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if (!cache.font_path || 0 != strcmp (cache.font_path, font_path))
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{
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hb_blob_destroy (cache.blob);
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cache.blob = hb_blob_create_from_file_or_fail (font_path);
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free ((char *) cache.font_path);
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cache.font_path = strdup (font_path);
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if (!cache.blob)
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fail (false, "%s: Failed reading file", font_path);
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hb_face_destroy (cache.face);
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cache.face = nullptr;
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cache.face_index = (unsigned) -1;
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}
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if (cache.face_index != face_index)
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{
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hb_face_destroy (cache.face);
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cache.face = hb_face_create (cache.blob, face_index);
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cache.face_index = face_index;
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}
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face = cache.face;
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return face;
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}
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void
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face_options_t::add_options (option_parser_t *parser)
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{
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GOptionEntry entries[] =
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{
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{"font-file", 0, 0, G_OPTION_ARG_STRING, &this->font_file, "Set font file-name", "filename"},
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{"face-index", 0, 0, G_OPTION_ARG_INT, &this->face_index, "Set face index (default: 0)", "index"},
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{nullptr}
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};
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parser->add_group (entries,
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"face",
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"Font-face options:",
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"Options for the font face",
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this);
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}
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#endif
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