Implemented the SET LOCALE='...' command.

[pspp-builds.git] / src / libpspp / i18n.c

diff --git a/src/libpspp/i18n.c b/src/libpspp/i18n.c
index 36215b700c574ee6d9ef69acadc1e684cbde99e5..c0459712e71480dba9503aaa9260a28ac115f4c6 100644 (file)
--- a/src/libpspp/i18n.c
+++ b/src/libpspp/i18n.c
@@ -204,6 +204,62 @@ i18n_init (void)
 }
 
 
+const char *
+get_default_encoding (void)
+{
+  return default_encoding;
+}
+
+void
+set_default_encoding (const char *enc)
+{
+  free (default_encoding);
+  default_encoding = strdup (enc);
+}
+
+
+/* Attempts to set the encoding from a locale name
+   returns true if successfull.
+   This function does not (should not!) alter the current locale.
+*/
+bool
+set_encoding_from_locale (const char *loc)
+{
+  bool ok = true;
+  char *c_encoding;
+  char *loc_encoding;
+  char *tmp = strdup (setlocale (LC_CTYPE, NULL));
+
+  setlocale (LC_CTYPE, "C");
+  c_encoding = strdup (locale_charset ());
+
+  setlocale (LC_CTYPE, loc);
+  loc_encoding = strdup (locale_charset ());
+
+
+  if ( 0 == strcmp (loc_encoding, c_encoding))
+    {
+      ok = false;
+    }
+
+
+  setlocale (LC_CTYPE, tmp);
+
+  free (tmp);
+
+  if (ok)
+    {
+      free (default_encoding);
+      default_encoding = loc_encoding;
+    }
+  else
+    free (loc_encoding);
+
+  free (c_encoding);
+
+  return ok;
+}
+
 void
 i18n_done (void)
 {
@@ -220,6 +276,19 @@ i18n_done (void)
 
 
 
+bool
+valid_encoding (const char *enc)
+{
+  iconv_t conv = iconv_open ("UTF8", enc);
+
+  if ( conv == (iconv_t) -1)
+    return false;
+
+  iconv_close (conv);
+
+  return true;
+}
+
 
 /* Return the system local's idea of the
    decimal seperator character */