New module 'wcsdup'.

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

diff --git a/lib/wcsdup-impl.h b/lib/wcsdup-impl.h
new file mode 100644 (file)
index 0000000..f721ca1
--- /dev/null
+++ b/lib/wcsdup-impl.h
@@ -0,0 +1,29 @@
+/* Duplicate a wide string.
+   Copyright (C) 1999, 2011 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 1999.
+
+   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/>.  */
+
+wchar_t *
+wcsdup (const wchar_t *s)
+{
+  size_t n = wcslen (s) + 1;
+  wchar_t *copy = (wchar_t *) malloc (n * sizeof (wchar_t));
+  if (copy != NULL)
+    return wmemcpy (copy, s, n);
+  else
+    /* The glibc documentation does not say that errno should be set to ENOMEM
+       here.  */
+    return NULL;
+}