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/*
* Copyright © 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
*/
#ifndef FACE_OPTIONS_HH
#define FACE_OPTIONS_HH
#include "options.hh"
struct face_options_t
{
~face_options_t ()
{
g_free (font_file);
g_free (face_loader);
hb_face_destroy (face);
}
void set_face (hb_face_t *face_)
{
hb_face_destroy (face);
face = hb_face_reference (face_);
}
void add_options (option_parser_t *parser);
void post_parse (GError **error);
static struct cache_t
{
~cache_t ()
{
g_free (font_path);
g_free (face_loader);
hb_face_destroy (face);
}
char *font_path = nullptr;
char *face_loader = nullptr;
unsigned face_index = (unsigned) -1;
hb_face_t *face = nullptr;
} cache;
char *font_file = nullptr;
unsigned face_index = 0;
char *face_loader = nullptr;
hb_face_t *face = nullptr;
};
face_options_t::cache_t face_options_t::cache {};
void
face_options_t::post_parse (GError **error)
{
if (!font_file)
{
g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
"No font file set");
return;
}
assert (font_file);
const char *font_path = font_file;
if (0 == strcmp (font_path, "-"))
{
#if defined(_WIN32) || defined(__CYGWIN__)
setmode (fileno (stdin), O_BINARY);
font_path = "STDIN";
#else
font_path = "/dev/stdin";
#endif
}
if ((!cache.font_path || 0 != strcmp (cache.font_path, font_path)) ||
(cache.face_loader != face_loader &&
(cache.face_loader && face_loader && 0 != strcmp (cache.face_loader, face_loader))) ||
cache.face_index != face_index)
{
hb_face_destroy (cache.face);
cache.face = hb_face_create_from_file_or_fail_using (font_path, face_index, face_loader);
cache.face_index = face_index;
g_free ((char *) cache.font_path);
g_free ((char *) cache.face_loader);
cache.font_path = g_strdup (font_path);
cache.face_loader = face_loader ? g_strdup (face_loader) : nullptr;
if (!cache.face)
{
g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
"%s: Failed loading font face", font_path);
return_value = RETURN_VALUE_FACE_LOAD_FAILED;
return;
}
}
set_face (cache.face);
}
static G_GNUC_NORETURN gboolean
list_face_loaders (const char *name G_GNUC_UNUSED,
const char *arg G_GNUC_UNUSED,
gpointer data G_GNUC_UNUSED,
GError **error G_GNUC_UNUSED)
{
for (const char **funcs = hb_face_list_loaders (); *funcs; funcs++)
g_printf ("%s\n", *funcs);
exit(0);
}
void
face_options_t::add_options (option_parser_t *parser)
{
char *face_loaders_text = nullptr;
{
const char **supported_face_loaders = hb_face_list_loaders ();
GString *s = g_string_new (nullptr);
if (unlikely (!supported_face_loaders))
g_string_printf (s, "Set face loader to use (default: none)\n No supported face loaders found");
else
{
char *supported_str = g_strjoinv ("/", (char **) supported_face_loaders);
g_string_printf (s, "Set face loader to use (default: %s)\n Supported face loaders are: %s",
supported_face_loaders[0],
supported_str);
g_free (supported_str);
}
face_loaders_text = g_string_free (s, FALSE);
parser->free_later (face_loaders_text);
}
GOptionEntry entries[] =
{
{"font-file", 0, 0, G_OPTION_ARG_STRING, &this->font_file, "Set font file-name", "filename"},
{"face-index", 'y', 0, G_OPTION_ARG_INT, &this->face_index, "Set face index (default: 0)", "index"},
{"face-loader", 0, 0, G_OPTION_ARG_STRING, &this->face_loader, face_loaders_text, "loader"},
{"list-face-loaders",0, G_OPTION_FLAG_NO_ARG,
G_OPTION_ARG_CALLBACK, (gpointer) &list_face_loaders, "List available face loaders and quit", nullptr},
{nullptr}
};
parser->add_group (entries,
"face",
"Font-face options:",
"Options for the font face",
this);
parser->add_environ("HB_FACE_LOADER=face-loader; Overrides the default face loader.");
parser->add_exit_code (RETURN_VALUE_FACE_LOAD_FAILED, "Failed loading font face.");
}
#endif
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