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authorJeffrey Stedfast <fejj@ximian.com>2003-02-26 06:37:11 +0800
committerJeffrey Stedfast <fejj@src.gnome.org>2003-02-26 06:37:11 +0800
commit9ae85b8c071909a5dceaf50cf14b84916140f7d6 (patch)
tree546e044c2a609b0a1644a473450e6f292fc78952
parentef315a410d161cd6f08c8ade62e5d31880d35b67 (diff)
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New internal function to parse the locale language code. (e_iconv_init):
2003-02-25 Jeffrey Stedfast <fejj@ximian.com> * gal/util/e-iconv.c (locale_parse_lang): New internal function to parse the locale language code. (e_iconv_init): Parse and set the locale_lang variable. (e_iconv_locale_language): Return the locale_lang. (e_iconv_charset_language): Map some CJKR charsets to a language code. svn path=/trunk/; revision=20063
-rw-r--r--e-util/e-iconv.c130
-rw-r--r--e-util/e-iconv.h5
2 files changed, 107 insertions, 28 deletions
diff --git a/e-util/e-iconv.c b/e-util/e-iconv.c
index f6823538b4..409224f006 100644
--- a/e-util/e-iconv.c
+++ b/e-util/e-iconv.c
@@ -35,10 +35,6 @@
#include <locale.h>
-#ifdef HAVE_ALLOCA_H
-#include <alloca.h>
-#endif
-
#ifdef HAVE_CODESET
#include <langinfo.h>
#endif
@@ -97,6 +93,7 @@ static unsigned int iconv_cache_size = 0;
static GHashTable *iconv_charsets = NULL;
static char *locale_charset = NULL;
+static char *locale_lang = NULL;
struct {
char *charset;
@@ -189,21 +186,42 @@ static EDListNode *e_dlist_remove(EDListNode *n)
return n;
}
-/*
- we don't want to lower charset names in native locale (look what does in such case ISO-8859-9),
- but rather lower them in "pure" C locale
- this fixes bug #24179
-*/
static void
-C_g_strdown (gchar *string)
+locale_parse_lang (const char *locale)
{
- gchar *old_locale;
-
- old_locale = g_strdup (setlocale (LC_CTYPE, NULL));
- setlocale (LC_CTYPE, "C");
- g_strdown (string);
- setlocale (LC_CTYPE, old_locale);
- g_free (old_locale);
+ char *codeset, *lang;
+
+ if ((codeset = strchr (locale, '.')))
+ lang = g_strndup (locale, codeset - locale);
+ else
+ lang = g_strdup (locale);
+
+ /* validate the language */
+ if (strlen (lang) >= 2) {
+ if (lang[2] == '-' || lang[2] == '_') {
+ /* canonicalise the lang */
+ g_ascii_strdown (lang, 2);
+
+ /* validate the country code */
+ if (strlen (lang + 3) > 2) {
+ /* invalid country code */
+ lang[2] = '\0';
+ } else {
+ lang[2] = '-';
+ g_ascii_strup (lang + 3, 2);
+ }
+ } else if (lang[2] != '\0') {
+ /* invalid language */
+ g_free (lang);
+ lang = NULL;
+ }
+
+ locale_lang = lang;
+ } else {
+ /* invalid language */
+ locale_lang = NULL;
+ g_free (lang);
+ }
}
/* NOTE: Owns the lock on return if keep is TRUE ! */
@@ -226,7 +244,7 @@ e_iconv_init(int keep)
for (i = 0; known_iconv_charsets[i].charset != NULL; i++) {
from = g_strdup(known_iconv_charsets[i].charset);
to = g_strdup(known_iconv_charsets[i].iconv_name);
- C_g_strdown(from);
+ g_ascii_strdown (from, -1);
g_hash_table_insert(iconv_charsets, from, to);
}
@@ -235,7 +253,7 @@ e_iconv_init(int keep)
iconv_cache_open = g_hash_table_new(NULL, NULL);
locale = setlocale (LC_ALL, NULL);
-
+
if (!locale || !strcmp (locale, "C") || !strcmp (locale, "POSIX")) {
/* The locale "C" or "POSIX" is a portable locale; its
* LC_CTYPE part corresponds to the 7-bit ASCII character
@@ -243,10 +261,11 @@ e_iconv_init(int keep)
*/
locale_charset = NULL;
+ locale_lang = NULL;
} else {
#ifdef HAVE_CODESET
- locale_charset = g_strdup(nl_langinfo(CODESET));
- C_g_strdown(locale_charset);
+ locale_charset = g_strdup (nl_langinfo (CODESET));
+ g_ascii_strdown (locale_charset, -1);
#else
/* A locale name is typically of the form language[_terri-
* tory][.codeset][@modifier], where language is an ISO 639
@@ -263,12 +282,16 @@ e_iconv_init(int keep)
/* ; is a hack for debian systems and / is a hack for Solaris systems */
for (p = codeset; *p && !strchr ("@;/", *p); p++);
locale_charset = g_strndup (codeset, p - codeset);
- C_g_strdown (locale_charset);
+ g_ascii_strdown (locale_charset, -1);
} else {
/* charset unknown */
locale_charset = NULL;
}
-#endif
+#endif
+
+ /* parse the locale lang */
+ locale_parse_lang (locale);
+
}
if (!keep)
@@ -282,10 +305,10 @@ const char *e_iconv_charset_name(const char *charset)
if (charset == NULL)
return NULL;
- name = alloca(strlen(charset)+1);
- strcpy(name, charset);
- C_g_strdown(name);
-
+ name = g_alloca (strlen (charset) + 1);
+ strcpy (name, charset);
+ g_ascii_strdown (name, -1);
+
e_iconv_init(TRUE);
ret = g_hash_table_lookup(iconv_charsets, name);
if (ret != NULL) {
@@ -385,7 +408,7 @@ iconv_t e_iconv_open(const char *oto, const char *ofrom)
to = e_iconv_charset_name (oto);
from = e_iconv_charset_name (ofrom);
- tofrom = alloca(strlen(to) +strlen(from) + 2);
+ tofrom = g_alloca (strlen (to) + strlen (from) + 2);
sprintf(tofrom, "%s%%%s", to, from);
LOCK();
@@ -496,3 +519,54 @@ const char *e_iconv_locale_charset(void)
return locale_charset;
}
+
+const char *
+e_iconv_locale_language (void)
+{
+ e_iconv_init (FALSE);
+
+ return locale_lang;
+}
+
+/* map CJKR charsets to their language code */
+/* NOTE: only support charset names that will be returned by
+ * e_iconv_charset_name() so that we don't have to keep track of all
+ * the aliases too. */
+static struct {
+ char *charset;
+ char *lang;
+} cjkr_lang_map[] = {
+ { "Big5", "zh" },
+ { "BIG5HKCS", "zh" },
+ { "gb2312", "zh" },
+ { "gb18030", "zh" },
+ { "gbk", "zh" },
+ { "euc-tw", "zh" },
+ { "iso-2022-jp", "ja" },
+ { "sjis", "ja" },
+ { "ujis", "ja" },
+ { "eucJP", "ja" },
+ { "euc-jp", "ja" },
+ { "euc-kr", "ko" },
+ { "koi8-r", "ru" },
+ { "koi8-u", "uk" }
+};
+
+#define NUM_CJKR_LANGS (sizeof (cjkr_lang_map) / sizeof (cjkr_lang_map[0]))
+
+const char *
+e_iconv_charset_language (const char *charset)
+{
+ int i;
+
+ if (!charset)
+ return NULL;
+
+ charset = e_iconv_charset_name (charset);
+ for (i = 0; i < NUM_CJKR_LANGS; i++) {
+ if (!strcasecmp (cjkr_lang_map[i].charset, charset))
+ return cjkr_lang_map[i].lang;
+ }
+
+ return NULL;
+}
diff --git a/e-util/e-iconv.h b/e-util/e-iconv.h
index daf97a30ab..14b93853d5 100644
--- a/e-util/e-iconv.h
+++ b/e-util/e-iconv.h
@@ -5,6 +5,7 @@
*
* Authors:
* Michael Zucchi <notzed@ximian.com>
+ * Jeffrey Stedfast <fejj@ximian.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@@ -37,6 +38,10 @@ size_t e_iconv(iconv_t cd, const char **inbuf, size_t *inbytesleft, char ** outb
void e_iconv_close(iconv_t ip);
const char *e_iconv_locale_charset(void);
+/* languages */
+const char *e_iconv_locale_language (void);
+const char *e_iconv_charset_language (const char *charset);
+
#ifdef __cplusplus
}
#endif /* __cplusplus */