1 files changed, 93 insertions, 0 deletions
diff --git a/mysys/mf_fn_ext.c b/mysys/mf_fn_ext.c
new file mode 100644
index 00000000..3501ca7c
--- /dev/null
+++ b/mysys/mf_fn_ext.c
@@ -0,0 +1,93 @@
+/* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
+
+   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; version 2 of the License.
+
+   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, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */
+
+
+#include "mysys_priv.h"
+#include <m_string.h>
+
+/*
+  Return a pointer to the extension of the filename.
+
+  SYNOPSIS
+    fn_ext()
+    name		Name of file
+
+  DESCRIPTION
+    The extension is defined as everything after the first extension character
+    (normally '.') after the directory name.
+
+  RETURN VALUES
+    Pointer to the extension character. If there isn't any extension,
+    points at the end ASCII(0) of the filename.
+*/
+
+char *fn_ext(const char *name)
+{
+  register const char *pos, *gpos;
+  DBUG_ENTER("fn_ext");
+  DBUG_PRINT("mfunkt",("name: '%s'",name));
+
+#if defined(FN_DEVCHAR) || defined(BASKSLASH_MBTAIL)
+  {
+    char buff[FN_REFLEN];
+    size_t res_length;
+    gpos= name+ dirname_part(buff,(char*) name, &res_length);
+  }
+#else
+  if (!(gpos= strrchr(name, FN_LIBCHAR)))
+    gpos= name;
+#endif
+  pos= strchr(gpos, FN_EXTCHAR);
+  DBUG_RETURN((char*) (pos ? pos : strend(gpos)));
+} /* fn_ext */
+
+
+/*
+  Return a pointer to the extension of the filename.
+
+  SYNOPSIS
+    fn_ext2()
+    name		Name of file
+
+  DESCRIPTION
+    The extension is defined as everything after the last extension character
+    (normally '.') after the directory name.
+
+  RETURN VALUES
+    Pointer to the extension character. If there isn't any extension,
+    points at the end ASCII(0) of the filename.
+*/
+
+char *fn_ext2(const char *name)
+{
+  register const char *pos, *gpos;
+  DBUG_ENTER("fn_ext");
+  DBUG_PRINT("mfunkt",("name: '%s'",name));
+
+#if defined(FN_DEVCHAR) || defined(BASKSLASH_MBTAIL)
+  {
+    char buff[FN_REFLEN];
+    size_t res_length;
+    gpos= name+ dirname_part(buff,(char*) name, &res_length);
+  }
+#else
+  if (!(gpos= strrchr(name, FN_LIBCHAR)))
+    gpos= name;
+#endif
+  // locate the last occurrence of FN_EXTCHAR
+  pos= strrchr(gpos, FN_EXTCHAR);
+  DBUG_RETURN((char*) (pos ? pos : strend(gpos)));
+} /* fn_ext2 */
+