Imported Upstream version 2.13.2

[platform/upstream/git.git] / gettext.c

diff --git a/gettext.c b/gettext.c
index 71e9545..db727ea 100644 (file)
--- a/gettext.c
+++ b/gettext.c
@@ -18,6 +18,33 @@
 #      endif
 #endif
 
+static const char *charset;
+
+/*
+ * Guess the user's preferred languages from the value in LANGUAGE environment
+ * variable and LC_MESSAGES locale category if NO_GETTEXT is not defined.
+ *
+ * The result can be a colon-separated list like "ko:ja:en".
+ */
+const char *get_preferred_languages(void)
+{
+       const char *retval;
+
+       retval = getenv("LANGUAGE");
+       if (retval && *retval)
+               return retval;
+
+#ifndef NO_GETTEXT
+       retval = setlocale(LC_MESSAGES, NULL);
+       if (retval && *retval &&
+               strcmp(retval, "C") &&
+               strcmp(retval, "POSIX"))
+               return retval;
+#endif
+
+       return NULL;
+}
+
 #ifdef GETTEXT_POISON
 int use_gettext_poison(void)
 {
@@ -29,7 +56,17 @@ int use_gettext_poison(void)
 #endif
 
 #ifndef NO_GETTEXT
-static const char *charset;
+static int test_vsnprintf(const char *fmt, ...)
+{
+       char buf[26];
+       int ret;
+       va_list ap;
+       va_start(ap, fmt);
+       ret = vsnprintf(buf, sizeof(buf), fmt, ap);
+       va_end(ap);
+       return ret;
+}
+
 static void init_gettext_charset(const char *domain)
 {
        /*
@@ -99,9 +136,7 @@ static void init_gettext_charset(const char *domain)
           $ LANGUAGE= LANG=de_DE.utf8 ./test
           test: Kein passendes Ger?t gefunden
 
-          In the long term we should probably see about getting that
-          vsnprintf bug in glibc fixed, and audit our code so it won't
-          fall apart under a non-C locale.
+          The vsnprintf bug has been fixed since glibc 2.17.
 
           Then we could simply set LC_CTYPE from the environment, which would
           make things like the external perror(3) messages work.
@@ -115,7 +150,9 @@ static void init_gettext_charset(const char *domain)
        setlocale(LC_CTYPE, "");
        charset = locale_charset();
        bind_textdomain_codeset(domain, charset);
-       setlocale(LC_CTYPE, "C");
+       /* the string is taken from v0.99.6~1 */
+       if (test_vsnprintf("%.*s", 13, "David_K\345gedal") < 0)
+               setlocale(LC_CTYPE, "C");
 }
 
 void git_setup_gettext(void)
@@ -126,6 +163,7 @@ void git_setup_gettext(void)
                podir = GIT_LOCALE_PATH;
        bindtextdomain("git", podir);
        setlocale(LC_MESSAGES, "");
+       setlocale(LC_TIME, "");
        init_gettext_charset("git");
        textdomain("git");
 }
@@ -135,8 +173,27 @@ int gettext_width(const char *s)
 {
        static int is_utf8 = -1;
        if (is_utf8 == -1)
-               is_utf8 = !strcmp(charset, "UTF-8");
+               is_utf8 = is_utf8_locale();
 
        return is_utf8 ? utf8_strwidth(s) : strlen(s);
 }
 #endif
+
+int is_utf8_locale(void)
+{
+#ifdef NO_GETTEXT
+       if (!charset) {
+               const char *env = getenv("LC_ALL");
+               if (!env || !*env)
+                       env = getenv("LC_CTYPE");
+               if (!env || !*env)
+                       env = getenv("LANG");
+               if (!env)
+                       env = "";
+               if (strchr(env, '.'))
+                       env = strchr(env, '.') + 1;
+               charset = xstrdup(env);
+       }
+#endif
+       return is_encoding_utf8(charset);
+}