New module 'wctrans'.

[gnulib.git] / lib / wctrans-impl.h

diff --git a/lib/wctrans-impl.h b/lib/wctrans-impl.h
new file mode 100644 (file)
index 0000000..d099f8b
--- /dev/null
+++ b/lib/wctrans-impl.h
@@ -0,0 +1,37 @@
+/* Get descriptor for a wide character case conversion.
+   Copyright (C) 2011 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   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 3 of the License, 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, see <http://www.gnu.org/licenses/>.  */
+
+wctrans_t
+wctrans (const char *name)
+{
+  if (name[0] == 't'
+      && name[1] == 'o')
+    switch (name[2])
+      {
+      case 'l':
+        if (strcmp (name + 3, "ower") == 0)
+          return (wctrans_t) towlower;
+        break;
+      case 'u':
+        if (strcmp (name + 3, "pper") == 0)
+          return (wctrans_t) towupper;
+        break;
+      default:
+        break;
+      }
+  return NULL;
+}