2 files changed, 88 insertions, 11 deletions

diff --git a/iconv/gconv_charset.h b/iconv/gconv_charset.h
new file mode 100644
index 0000000000..334bb5f1d0
--- /dev/null
+++ b/iconv/gconv_charset.h
@@ -0,0 +1,60 @@
+/* Charset name normalization.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2001.
+
+   The GNU C 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.
+
+   The GNU C 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 the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <ctype.h>
+
+
+static inline void
+strip (char *wp, const char *s)
+{
+  int slash_count = 0;
+
+  while (*s != '\0')
+    {
+      if (isalnum (*s) || *s == '_' || *s == '-' || *s == '.')
+	*wp++ = toupper (*s);
+      else if (*s == '/')
+	{
+	  if (++slash_count == 3)
+	    break;
+	  *wp++ = '/';
+	}
+      ++s;
+    }
+
+  while (slash_count++ < 2)
+    *wp++ = '/';
+
+  *wp = '\0';
+}
+
+
+static char *
+upstr (char *dst, const char *str)
+{
+  char *cp = dst;
+  while ((*cp++ = toupper (*str++)) != '\0')
+    /* nothing */;
+  return dst;
+}
+
+
+/* If NAME is an codeset alias expand it.  */
+extern const char *__gconv_lookup_alias (const char *name);
diff --git a/iconv/gconv_db.c b/iconv/gconv_db.c
index c4ebc4f096..71d64b493e 100644
--- a/iconv/gconv_db.c
+++ b/iconv/gconv_db.c
@@ -614,13 +614,38 @@ find_derivation (const char *toset, const char *toset_expand,
 }
 
 
+/* Control of initialization.  */
+__libc_once_define (static, once);
+
+
+static const char *
+do_lookup_alias (const char *name)
+{
+  struct gconv_alias key;
+  struct gconv_alias **found;
+
+  key.fromname = (char *) name;
+  found = __tfind (&key, &__gconv_alias_db, __gconv_alias_compare);
+  return found != NULL ? (*found)->toname : NULL;
+}
+
+
+const char *
+__gconv_lookup_alias (const char *name)
+{
+  /* Ensure that the configuration data is read.  */
+  __libc_once (once, __gconv_read_conf);
+
+  return do_lookup_alias (name) ?: name;
+}
+
+
 int
 internal_function
 __gconv_find_transform (const char *toset, const char *fromset,
 			struct __gconv_step **handle, size_t *nsteps,
 			int flags)
 {
-  __libc_once_define (static, once);
   const char *fromset_expand = NULL;
   const char *toset_expand = NULL;
   int result;
@@ -641,16 +666,8 @@ __gconv_find_transform (const char *toset, const char *fromset,
   /* See whether the names are aliases.  */
   if (__gconv_alias_db != NULL)
     {
-      struct gconv_alias key;
-      struct gconv_alias **found;
-
-      key.fromname = (char *) fromset;
-      found = __tfind (&key, &__gconv_alias_db, __gconv_alias_compare);
-      fromset_expand = found != NULL ? (*found)->toname : NULL;
-
-      key.fromname = (char *) toset;
-      found = __tfind (&key, &__gconv_alias_db, __gconv_alias_compare);
-      toset_expand = found != NULL ? (*found)->toname : NULL;
+      fromset_expand = do_lookup_alias (fromset);
+      toset_expand = do_lookup_alias (toset);
     }
 
   if (__builtin_expect (flags & GCONV_AVOID_NOCONV, 0)