/*
* Copyright (C) 2003 Christian Persch
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Id$
*/
#include "config.h"
#include "ephy-langs.h"
#include "ephy-debug.h"
#include <glib/gi18n.h>
#include <string.h>
#ifdef HAVE_ISO_CODES
#include <libxml/xmlreader.h>
#endif
static const EphyFontsLanguageInfo font_languages [] =
{
{ N_("Arabic"), "ar" },
{ N_("Baltic"), "x-baltic" },
{ N_("Central European"), "x-central-euro" },
{ N_("Cyrillic"), "x-cyrillic" },
{ N_("Devanagari"), "x-devanagari" },
{ N_("Greek"), "el" },
{ N_("Hebrew"), "he" },
{ N_("Japanese"), "ja" },
{ N_("Korean"), "ko" },
{ N_("Simplified Chinese"), "zh-CN" },
{ N_("Tamil"), "x-tamil" },
{ N_("Thai"), "th" },
{ N_("Traditional Chinese"), "zh-TW" },
{ N_("Traditional Chinese (Hong Kong)"), "zh-HK" },
{ N_("Turkish"), "tr" },
{ N_("Unicode"), "x-unicode" },
{ N_("Western"), "x-western" }
};
static const guint n_font_languages = G_N_ELEMENTS (font_languages);
const EphyFontsLanguageInfo *
ephy_font_languages (void)
{
return font_languages;
}
guint
ephy_font_n_languages (void)
{
return n_font_languages;
}
/* sanitise the languages list according to the rules for HTTP accept-language
* in RFC 2616, Sect. 14.4
*/
void
ephy_langs_sanitise (GArray *array)
{
char *lang1, *lang2;
int i, j;
/* if we have 'xy-ab' in list but not 'xy', append 'xy' */
for (i = 0; i < array->len; i++)
{
gboolean found = FALSE;
char *dash, *prefix;
lang1 = (char *) g_array_index (array,char *, i);
dash = strchr (lang1, '-');
if (dash == NULL) continue;
for (j = i + 1; j < array->len; j++)
{
lang2 = (char *) g_array_index (array, char *, j);
if (strchr (lang2, '-') == NULL &&
g_str_has_prefix (lang1, lang2))
{
found = TRUE;
}
}
if (found == FALSE)
{
prefix = g_strndup (lang1, dash - lang1);
g_array_append_val (array, prefix);
}
}
/* uniquify */
for (i = 0; i < (int) array->len - 1; i++)
{
for (j = (int) array->len - 1; j > i; j--)
{
lang1 = (char *) g_array_index (array,char *, i);
lang2 = (char *) g_array_index (array, char *, j);
if (strcmp (lang1, lang2) == 0)
{
g_array_remove_index (array, j);
g_free (lang2);
}
}
}
/* move 'xy' code behind all 'xy-ab' codes */
for (i = (int) array->len - 2; i >= 0; i--)
{
for (j = (int) array->len - 1; j > i; j--)
{
lang1 = (char *) g_array_index (array, char *, i);
lang2 = (char *) g_array_index (array, char *, j);
if (strchr (lang1, '-') == NULL &&
strchr (lang2, '-') != NULL &&
g_str_has_prefix (lang2, lang1))
{
g_array_insert_val (array, j + 1, lang1);
g_array_remove_index (array, i);
break;
}
}
}
}
void
ephy_langs_append_languages (GArray *array)
{
const char * const * languages;
const char *system_lang;
char *lang;
int i;
/**
* This is a comma separated list of language ranges, as specified
* by RFC 2616, 14.4.
* Always include the basic language code last.
*
* Examples:
* "pt" translation: "pt"
* "pt_BR" translation: "pt-br,pt"
* "zh_CN" translation: "zh-cn,zh"
* "zh_HK" translation: "zh-hk,zh" or maybe "zh-hk,zh-tw,zh"
*/
system_lang = _("system-language");
/* FIXME: use system_language when given, instead of g_get_language_names () ? */
languages = g_get_language_names ();
g_return_if_fail (languages != NULL);
/* FIXME: maybe just use the first, instead of all of them? */
for (i = 0; languages[i] != NULL; i++)
{
if (strstr (languages[i], ".") == 0 &&
strstr (languages[i], "@") == 0 &&
strcmp (languages[i], "C") != 0)
{
/* change to lowercase and '_' to '-' */
lang = g_strdelimit (g_ascii_strdown
(languages[i], -1), "_", '-');
g_array_append_val (array, lang);
}
}
/* Fallback: add "en" if list is empty */
if (array->len == 0)
{
lang = g_strdup ("en");
g_array_append_val (array, lang);
}
}
char **
ephy_langs_get_languages (void)
{
GArray *array;
array = g_array_new (TRUE, FALSE, sizeof (char *));
ephy_langs_append_languages (array);
ephy_langs_sanitise (array);
return (char **) g_array_free (array, FALSE);
}
#ifdef HAVE_ISO_CODES
#define ISOCODESLOCALEDIR ISO_CODES_PREFIX "/share/locale"
static void
ephy_langs_bind_iso_domains (void)
{
#ifdef ENABLE_NLS
static gboolean bound = FALSE;
if (bound == FALSE)
{
bindtextdomain (ISO_639_DOMAIN, ISOCODESLOCALEDIR);
bind_textdomain_codeset (ISO_639_DOMAIN, "UTF-8");
bindtextdomain(ISO_3166_DOMAIN, ISOCODESLOCALEDIR);
bind_textdomain_codeset (ISO_3166_DOMAIN, "UTF-8");
bound = TRUE;
}
#endif
}
static void
read_iso_639_entry (xmlTextReaderPtr reader,
GHashTable *table)
{
xmlChar *code, *name;
code = xmlTextReaderGetAttribute (reader, (const xmlChar *) "iso_639_1_code");
name = xmlTextReaderGetAttribute (reader, (const xmlChar *) "name");
/* Get iso-639-2 code */
if (code == NULL || code[0] == '\0')
{
xmlFree (code);
/* FIXME: use the 2T or 2B code? */
code = xmlTextReaderGetAttribute (reader, (const xmlChar *) "iso_639_2T_code");
}
if (code != NULL && code[0] != '\0' && name != NULL && name[0] != '\0')
{
g_hash_table_insert (table, code, name);
}
else
{
xmlFree (code);
xmlFree (name);
}
}
static void
read_iso_3166_entry (xmlTextReaderPtr reader,
GHashTable *table)
{
xmlChar *code, *name;
code = xmlTextReaderGetAttribute (reader, (const xmlChar *) "alpha_2_code");
name = xmlTextReaderGetAttribute (reader, (const xmlChar *) "name");
if (code != NULL && code[0] != '\0' && name != NULL && name[0] != '\0')
{
char *lcode;
lcode = g_ascii_strdown ((char *) code, -1);
xmlFree (code);
g_hash_table_insert (table, lcode, name);
}
else
{
xmlFree (code);
xmlFree (name);
}
}
typedef enum
{
STATE_START,
STATE_STOP,
STATE_ENTRIES,
} ParserState;
static gboolean
load_iso_entries (int iso,
GFunc read_entry_func,
gpointer user_data)
{
xmlTextReaderPtr reader;
ParserState state = STATE_START;
xmlChar iso_entries[32], iso_entry[32];
char *filename;
int ret = -1;
LOG ("Loading ISO-%d codes", iso)
START_PROFILER ("Loading ISO codes")
filename = g_strdup_printf (ISO_CODES_PREFIX "/share/xml/iso-codes/iso_%d.xml", iso);
reader = xmlNewTextReaderFilename (filename);
if (reader == NULL) goto out;
xmlStrPrintf (iso_entries, sizeof (iso_entries), "iso_%d_entries", iso);
xmlStrPrintf (iso_entry, sizeof (iso_entry), "iso_%d_entry", iso);
ret = xmlTextReaderRead (reader);
while (ret == 1)
{
const xmlChar *tag;
xmlReaderTypes type;
tag = xmlTextReaderConstName (reader);
type = xmlTextReaderNodeType (reader);
if (state == STATE_ENTRIES &&
type == XML_READER_TYPE_ELEMENT &&
xmlStrEqual (tag, iso_entry))
{
read_entry_func (reader, user_data);
}
else if (state == STATE_START &&
type == XML_READER_TYPE_ELEMENT &&
xmlStrEqual (tag, iso_entries))
{
state = STATE_ENTRIES;
}
else if (state == STATE_ENTRIES &&
type == XML_READER_TYPE_END_ELEMENT &&
xmlStrEqual (tag, iso_entries))
{
state = STATE_STOP;
}
else if (type == XML_READER_TYPE_SIGNIFICANT_WHITESPACE ||
type == XML_READER_TYPE_WHITESPACE ||
type == XML_READER_TYPE_TEXT ||
type == XML_READER_TYPE_COMMENT)
{
/* eat it */
}
else
{
/* ignore it */
}
ret = xmlTextReaderRead (reader);
}
xmlFreeTextReader (reader);
out:
if (ret < 0 || state != STATE_STOP)
{
g_warning ("Failed to load ISO-%d codes from %s!\n",
iso, filename);
return FALSE;
}
g_free (filename);
STOP_PROFILER ("Loading ISO codes")
return TRUE;
}
GHashTable *
ephy_langs_iso_639_table (void)
{
GHashTable *table;
ephy_langs_bind_iso_domains ();
table = g_hash_table_new_full (g_str_hash, g_str_equal,
(GDestroyNotify) xmlFree,
(GDestroyNotify) xmlFree);
load_iso_entries (639, (GFunc) read_iso_639_entry, table);
return table;
}
GHashTable *
ephy_langs_iso_3166_table (void)
{
GHashTable *table;
ephy_langs_bind_iso_domains ();
table = g_hash_table_new_full (g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) xmlFree);
load_iso_entries (3166, (GFunc) read_iso_3166_entry, table);
return table;
}
#endif /* HAVE_ISO_CODES */
