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/* Pango
* gen-script-for-lang.c: Utility program to generate pango-script-lang-table.h
*
* Copyright (C) 2003 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pango/pango-enum-types.h>
#include <pango/pango-script.h>
#include <pango/pango-types.h>
#include <fontconfig/fontconfig.h>
#define MAX_SCRIPTS 3
typedef struct {
PangoLanguage *lang;
PangoScript scripts[MAX_SCRIPTS];
} LangInfo;
static const char *get_script_name (PangoScript script)
{
static GEnumClass *class = NULL;
GEnumValue *value;
if (!class)
class = g_type_class_ref (PANGO_TYPE_SCRIPT);
value = g_enum_get_value (class, script);
g_assert (value);
return value->value_name;
}
static void fail (const char *format, ...) G_GNUC_PRINTF (1, 2) G_GNUC_NORETURN;
static void fail (const char *format, ...)
{
va_list vap;
va_start (vap, format);
vfprintf (stderr, format, vap);
va_end (vap);
exit (1);
}
static void
script_for_char (gunichar ch,
LangInfo *info)
{
PangoScript script = pango_script_for_unichar (ch);
if (script != PANGO_SCRIPT_COMMON &&
script != PANGO_SCRIPT_INHERITED)
{
int j;
if (script == PANGO_SCRIPT_UNKNOWN)
{
g_message ("Script unknown for U+%04X", ch);
return;
}
for (j = 0; j < MAX_SCRIPTS; j++)
{
if (info->scripts[j] == script)
break;
if (info->scripts[j] == PANGO_SCRIPT_INVALID_CODE)
{
info->scripts[j] = script;
break;
}
}
if (j == MAX_SCRIPTS)
fail ("More than %d scripts found for %s\n", MAX_SCRIPTS, pango_language_to_string (info->lang));
}
}
static void
scripts_for_lang (LangInfo *info)
{
const FcCharSet *charset;
FcChar32 ucs4, pos;
FcChar32 map[FC_CHARSET_MAP_SIZE];
int i;
charset = FcCharSetForLang ((const FcChar8 *) info->lang);
if (!charset)
return;
for (ucs4 = FcCharSetFirstPage (charset, map, &pos);
ucs4 != FC_CHARSET_DONE;
ucs4 = FcCharSetNextPage (charset, map, &pos))
{
for (i = 0; i < FC_CHARSET_MAP_SIZE; i++)
{
FcChar32 bits = map[i];
FcChar32 base = ucs4 + i * 32;
int b = 0;
bits = map[i];
while (bits)
{
if (bits & 1)
script_for_char (base + b, info);
bits >>= 1;
b++;
}
}
}
}
static void
do_lang (GArray *script_array,
const FcChar8 *lang)
{
LangInfo info;
int j;
info.lang = pango_language_from_string ((const char *)lang);
for (j = 0; j < MAX_SCRIPTS; j++)
info.scripts[j] = PANGO_SCRIPT_INVALID_CODE;
scripts_for_lang (&info);
g_array_append_val (script_array, info);
}
static int
compare_lang (gconstpointer a,
gconstpointer b)
{
const LangInfo *info_a = a;
const LangInfo *info_b = b;
return strcmp (pango_language_to_string (info_a->lang),
pango_language_to_string (info_b->lang));
}
int main (void)
{
GArray *script_array;
unsigned int i;
int j;
int max_lang_len = 0;
FcStrList *langs;
FcChar8* lang;
g_type_init ();
script_array = g_array_new (FALSE, FALSE, sizeof (LangInfo));
langs = FcGetLangs ();
while ((lang = FcStrListNext (langs)))
do_lang (script_array, lang);
FcStrListDone (langs);
g_array_sort (script_array, compare_lang);
for (i = 0; i < script_array->len; i++)
{
LangInfo *info = &g_array_index (script_array, LangInfo, i);
max_lang_len = MAX (max_lang_len,
1 + (int)strlen (pango_language_to_string (info->lang)));
}
g_print ("typedef struct {\n"
" const char lang[%d];\n"
" PangoScript scripts[%d];\n"
"} PangoScriptForLang;\n"
"\n"
"static const PangoScriptForLang pango_script_for_lang[] = {\n",
max_lang_len,
MAX_SCRIPTS);
for (i = 0; i < script_array->len; i++)
{
LangInfo *info = &g_array_index (script_array, LangInfo, i);
g_print (" { \"%s\", { ", pango_language_to_string (info->lang));
for (j = 0; j < MAX_SCRIPTS; j++)
{
if (j != 0)
g_print (", ");
g_print ("%s", get_script_name (info->scripts[j]));
}
g_print (" } },\n");
}
g_print ("};\n");
return 0;
}
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