2 * Copyright © 2011 Google, Inc.
4 * This is part of HarfBuzz, a text shaping library.
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.
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
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.
24 * Google Author(s): Behdad Esfahbod
41 #if defined(_WIN32) || defined(__CYGWIN__)
42 #include <io.h> /* for setmode() under Windows */
45 #include <unistd.h> /* for isatty() */
49 #include <hb-features.h>
54 #include <glib/gprintf.h>
58 static inline void fail (hb_bool_t suggest_help, const char *format, ...) G_GNUC_NORETURN G_GNUC_PRINTF (2, 3);
61 fail (hb_bool_t suggest_help, const char *format, ...)
66 va_start (vap, format);
67 msg = g_strdup_vprintf (format, vap);
69 const char *prgname = g_get_prgname ();
70 g_printerr ("%s: %s\n", prgname, msg);
72 g_printerr ("Try `%s --help' for more information.\n", prgname);
77 struct option_parser_t
79 option_parser_t (const char *parameter_string = nullptr)
80 : context (g_option_context_new (parameter_string)),
81 to_free (g_ptr_array_new ())
84 static void _g_free_g_func (void *p, void * G_GNUC_UNUSED) { g_free (p); }
88 g_option_context_free (context);
89 g_ptr_array_foreach (to_free, _g_free_g_func, nullptr);
90 g_ptr_array_free (to_free, TRUE);
96 post_parse_ (void *thiz, GError **error) {}
97 template <typename Type>
99 post_parse_ (Type *thiz, GError **error) -> decltype (thiz->post_parse (error))
100 { thiz->post_parse (error); }
101 template <typename Type>
103 post_parse (GOptionContext *context G_GNUC_UNUSED,
104 GOptionGroup *group G_GNUC_UNUSED,
108 option_parser_t::post_parse_ (static_cast<Type *> (data), error);
112 template <typename Type>
113 void add_group (GOptionEntry *entries,
115 const gchar *description,
116 const gchar *help_description,
118 bool add_parse_hooks = true)
120 GOptionGroup *group = g_option_group_new (name, description, help_description,
121 static_cast<gpointer>(closure), nullptr);
122 g_option_group_add_entries (group, entries);
124 g_option_group_set_parse_hooks (group, nullptr, post_parse<Type>);
125 g_option_context_add_group (context, group);
128 template <typename Type>
129 void add_main_group (GOptionEntry *entries,
132 GOptionGroup *group = g_option_group_new (nullptr, nullptr, nullptr,
133 static_cast<gpointer>(closure), nullptr);
134 g_option_group_add_entries (group, entries);
135 /* https://gitlab.gnome.org/GNOME/glib/-/issues/2460 */
136 //g_option_group_set_parse_hooks (group, nullptr, post_parse<Type>);
137 g_option_context_set_main_group (context, group);
140 void set_summary (const char *summary)
142 g_option_context_set_summary (context, summary);
144 void set_description (const char *description)
146 g_option_context_set_description (context, description);
149 void free_later (char *p) {
150 g_ptr_array_add (to_free, p);
153 bool parse (int *argc, char ***argv, bool ignore_error = false);
155 GOptionContext *context;
161 static inline gchar *
164 GString *shapers = g_string_new (nullptr);
165 const char **shaper_list = hb_shape_list_shapers ();
167 for (; *shaper_list; shaper_list++) {
168 g_string_append (shapers, *shaper_list);
169 g_string_append_c (shapers, ',');
171 g_string_truncate (shapers, MAX (0, (gint)shapers->len - 1));
173 return g_string_free (shapers, false);
176 static G_GNUC_NORETURN gboolean
177 show_version (const char *name G_GNUC_UNUSED,
178 const char *arg G_GNUC_UNUSED,
179 gpointer data G_GNUC_UNUSED,
180 GError **error G_GNUC_UNUSED)
182 g_printf ("%s (%s) %s\n", g_get_prgname (), PACKAGE_NAME, PACKAGE_VERSION);
184 char *shapers = shapers_to_string ();
185 g_printf ("Available shapers: %s\n", shapers);
187 if (strcmp (HB_VERSION_STRING, hb_version_string ()))
188 g_printf ("Linked HarfBuzz library has a different version: %s\n", hb_version_string ());
194 option_parser_t::add_options ()
196 GOptionEntry entries[] =
198 {"version", 0, G_OPTION_FLAG_NO_ARG,
199 G_OPTION_ARG_CALLBACK, (gpointer) &show_version, "Show version numbers", nullptr},
202 g_option_context_add_main_entries (context, entries, nullptr);
206 option_parser_t::parse (int *argc, char ***argv, bool ignore_error)
208 setlocale (LC_ALL, "");
210 GError *parse_error = nullptr;
211 if (!g_option_context_parse (context, argc, argv, &parse_error))
216 fail (true, "%s", parse_error->message);
217 g_error_free (parse_error);
222 fail (true, "Option parse error");
230 /* fallback implementation for scalbn()/scalbnf() for pre-2013 MSVC */
231 #if defined (_MSC_VER) && (_MSC_VER < 1800)
237 __inline long double scalbn (long double x, int exp)
239 return x * (pow ((long double) FLT_RADIX, exp));
242 __inline float scalbnf (float x, int exp)
244 return x * (pow ((float) FLT_RADIX, exp));
249 parse_color (const char *s,
257 while (*s == ' ') s++;
260 unsigned sr, sg, sb, sa;
262 if (sscanf (s, "%2x%2x%2x%2x", &sr, &sg, &sb, &sa) <= 2)
264 if (sscanf (s, "%1x%1x%1x%1x", &sr, &sg, &sb, &sa) >= 3)