289 lines
7.0 KiB
C++
289 lines
7.0 KiB
C++
/*
|
|
* 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 OPTIONS_HH
|
|
#define OPTIONS_HH
|
|
|
|
#include "hb.hh"
|
|
|
|
#include <stdlib.h>
|
|
#include <stddef.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <assert.h>
|
|
#include <math.h>
|
|
#include <locale.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#if defined(_WIN32) || defined(__CYGWIN__)
|
|
#include <io.h> /* for setmode() under Windows */
|
|
#endif
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h> /* for isatty() */
|
|
#endif
|
|
|
|
|
|
#include <hb-features.h>
|
|
#include <hb.h>
|
|
#include <hb-ot.h>
|
|
|
|
#include <glib.h>
|
|
#include <glib/gprintf.h>
|
|
|
|
|
|
|
|
static inline void fail (hb_bool_t suggest_help, const char *format, ...) G_GNUC_NORETURN G_GNUC_PRINTF (2, 3);
|
|
|
|
static inline void
|
|
fail (hb_bool_t suggest_help, const char *format, ...)
|
|
{
|
|
const char *msg;
|
|
|
|
va_list vap;
|
|
va_start (vap, format);
|
|
msg = g_strdup_vprintf (format, vap);
|
|
va_end (vap);
|
|
const char *prgname = g_get_prgname ();
|
|
g_printerr ("%s: %s\n", prgname, msg);
|
|
if (suggest_help)
|
|
g_printerr ("Try `%s --help' for more information.\n", prgname);
|
|
|
|
exit (1);
|
|
}
|
|
|
|
struct option_parser_t
|
|
{
|
|
option_parser_t (const char *parameter_string = nullptr)
|
|
: context (g_option_context_new (parameter_string)),
|
|
to_free (g_ptr_array_new ())
|
|
{}
|
|
|
|
static void _g_free_g_func (void *p, void * G_GNUC_UNUSED) { g_free (p); }
|
|
|
|
~option_parser_t ()
|
|
{
|
|
g_option_context_free (context);
|
|
g_ptr_array_foreach (to_free, _g_free_g_func, nullptr);
|
|
g_ptr_array_free (to_free, TRUE);
|
|
}
|
|
|
|
void add_options ();
|
|
|
|
static void
|
|
post_parse_ (void *thiz, GError **error) {}
|
|
template <typename Type>
|
|
static auto
|
|
post_parse_ (Type *thiz, GError **error) -> decltype (thiz->post_parse (error))
|
|
{ thiz->post_parse (error); }
|
|
template <typename Type>
|
|
static gboolean
|
|
post_parse (GOptionContext *context G_GNUC_UNUSED,
|
|
GOptionGroup *group G_GNUC_UNUSED,
|
|
gpointer data,
|
|
GError **error)
|
|
{
|
|
option_parser_t::post_parse_ (static_cast<Type *> (data), error);
|
|
return !*error;
|
|
}
|
|
|
|
template <typename Type>
|
|
void add_group (GOptionEntry *entries,
|
|
const gchar *name,
|
|
const gchar *description,
|
|
const gchar *help_description,
|
|
Type *closure,
|
|
bool add_parse_hooks = true)
|
|
{
|
|
GOptionGroup *group = g_option_group_new (name, description, help_description,
|
|
static_cast<gpointer>(closure), nullptr);
|
|
g_option_group_add_entries (group, entries);
|
|
if (add_parse_hooks)
|
|
g_option_group_set_parse_hooks (group, nullptr, post_parse<Type>);
|
|
g_option_context_add_group (context, group);
|
|
}
|
|
|
|
template <typename Type>
|
|
void add_main_group (GOptionEntry *entries,
|
|
Type *closure)
|
|
{
|
|
GOptionGroup *group = g_option_group_new (nullptr, nullptr, nullptr,
|
|
static_cast<gpointer>(closure), nullptr);
|
|
g_option_group_add_entries (group, entries);
|
|
/* https://gitlab.gnome.org/GNOME/glib/-/issues/2460 */
|
|
//g_option_group_set_parse_hooks (group, nullptr, post_parse<Type>);
|
|
g_option_context_set_main_group (context, group);
|
|
}
|
|
|
|
void set_summary (const char *summary)
|
|
{
|
|
g_option_context_set_summary (context, summary);
|
|
}
|
|
void set_description (const char *description)
|
|
{
|
|
g_option_context_set_description (context, description);
|
|
}
|
|
|
|
void free_later (char *p) {
|
|
g_ptr_array_add (to_free, p);
|
|
}
|
|
|
|
bool parse (int *argc, char ***argv, bool ignore_error = false);
|
|
|
|
GOptionContext *context;
|
|
protected:
|
|
GPtrArray *to_free;
|
|
};
|
|
|
|
|
|
static inline gchar *
|
|
shapers_to_string ()
|
|
{
|
|
GString *shapers = g_string_new (nullptr);
|
|
const char **shaper_list = hb_shape_list_shapers ();
|
|
|
|
for (; *shaper_list; shaper_list++) {
|
|
g_string_append (shapers, *shaper_list);
|
|
g_string_append_c (shapers, ',');
|
|
}
|
|
g_string_truncate (shapers, MAX (0, (gint)shapers->len - 1));
|
|
|
|
return g_string_free (shapers, false);
|
|
}
|
|
|
|
static G_GNUC_NORETURN gboolean
|
|
show_version (const char *name G_GNUC_UNUSED,
|
|
const char *arg G_GNUC_UNUSED,
|
|
gpointer data G_GNUC_UNUSED,
|
|
GError **error G_GNUC_UNUSED)
|
|
{
|
|
g_printf ("%s (%s) %s\n", g_get_prgname (), PACKAGE_NAME, PACKAGE_VERSION);
|
|
|
|
char *shapers = shapers_to_string ();
|
|
g_printf ("Available shapers: %s\n", shapers);
|
|
g_free (shapers);
|
|
if (strcmp (HB_VERSION_STRING, hb_version_string ()))
|
|
g_printf ("Linked HarfBuzz library has a different version: %s\n", hb_version_string ());
|
|
|
|
exit(0);
|
|
}
|
|
|
|
inline void
|
|
option_parser_t::add_options ()
|
|
{
|
|
GOptionEntry entries[] =
|
|
{
|
|
{"version", 0, G_OPTION_FLAG_NO_ARG,
|
|
G_OPTION_ARG_CALLBACK, (gpointer) &show_version, "Show version numbers", nullptr},
|
|
{nullptr}
|
|
};
|
|
g_option_context_add_main_entries (context, entries, nullptr);
|
|
}
|
|
|
|
inline bool
|
|
option_parser_t::parse (int *argc, char ***argv, bool ignore_error)
|
|
{
|
|
setlocale (LC_ALL, "");
|
|
|
|
GError *parse_error = nullptr;
|
|
if (!g_option_context_parse (context, argc, argv, &parse_error))
|
|
{
|
|
if (parse_error)
|
|
{
|
|
if (!ignore_error)
|
|
fail (true, "%s", parse_error->message);
|
|
g_error_free (parse_error);
|
|
}
|
|
else
|
|
{
|
|
if (!ignore_error)
|
|
fail (true, "Option parse error");
|
|
}
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
/* fallback implementation for scalbn()/scalbnf() for pre-2013 MSVC */
|
|
#if defined (_MSC_VER) && (_MSC_VER < 1800)
|
|
|
|
#ifndef FLT_RADIX
|
|
#define FLT_RADIX 2
|
|
#endif
|
|
|
|
__inline long double scalbn (long double x, int exp)
|
|
{
|
|
return x * (pow ((long double) FLT_RADIX, exp));
|
|
}
|
|
|
|
__inline float scalbnf (float x, int exp)
|
|
{
|
|
return x * (pow ((float) FLT_RADIX, exp));
|
|
}
|
|
#endif
|
|
|
|
static inline bool
|
|
parse_color (const char *s,
|
|
unsigned &r,
|
|
unsigned &g,
|
|
unsigned &b,
|
|
unsigned &a)
|
|
{
|
|
bool ret = false;
|
|
|
|
while (*s == ' ') s++;
|
|
if (*s == '#') s++;
|
|
|
|
unsigned sr, sg, sb, sa;
|
|
sa = 255;
|
|
if (sscanf (s, "%2x%2x%2x%2x", &sr, &sg, &sb, &sa) <= 2)
|
|
{
|
|
if (sscanf (s, "%1x%1x%1x%1x", &sr, &sg, &sb, &sa) >= 3)
|
|
{
|
|
sr *= 17;
|
|
sg *= 17;
|
|
sb *= 17;
|
|
sa *= 17;
|
|
ret = true;
|
|
}
|
|
}
|
|
else
|
|
ret = true;
|
|
|
|
if (ret)
|
|
{
|
|
r = sr;
|
|
g = sg;
|
|
b = sb;
|
|
a = sa;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
#endif
|