merge from gcc

1 files changed, 62 insertions, 0 deletions

diff --git a/libiberty/xstrndup.c b/libiberty/xstrndup.c
new file mode 100644
index 0000000..b481e4a
--- /dev/null
+++ b/libiberty/xstrndup.c
@@ -0,0 +1,62 @@
+/* Implement the xstrndup function.
+   Copyright (C) 2005 Free Software Foundation, Inc.
+   Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.
+
+This file is part of the libiberty library.
+Libiberty 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.
+
+Libiberty 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 libiberty; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/*
+
+@deftypefn Replacement char* xstrndup (const char *@var{s}, size_t @var{n})
+
+Returns a pointer to a copy of @var{s} with at most @var{n} characters
+without fail, using @code{xmalloc} to obtain memory.  The result is
+always NUL terminated.
+
+@end deftypefn
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include <sys/types.h>
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+# ifdef HAVE_STRINGS_H
+#  include <strings.h>
+# endif
+#endif
+#include "ansidecl.h"
+#include "libiberty.h"
+
+char *
+xstrndup (s, n)
+     const char *s;
+     size_t n;
+{
+  char *result;
+  size_t len = strlen (s);
+
+  if (n < len)
+    len = n;
+
+  result = xmalloc (len + 1);
+
+  result[len] = '\0';
+  return memcpy (result, s, len);
+}