1 files changed, 47 insertions, 0 deletions
diff --git a/lib/lower.c b/lib/lower.c
new file mode 100644
index 0000000..e620fb7
--- /dev/null
+++ b/lib/lower.c
@@ -0,0 +1,47 @@
+/*
+ * lower.c: return lower-case copy of a string
+ *
+ * Copyright (C) 1994, 1995 Graeme W. Wilford. (Wilf.)
+ * Copyright (C) 2003, 2008 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <string.h>
+#include <ctype.h>
+
+#include "manconfig.h"
+
+#include "lower.h"
+
+/* return lowered version of s */
+char *lower (const char *s)
+{
+	char *low, *p;
+
+	p = low = xmalloc (strlen (s) + 1);
+
+	while (*s)
+		*p++ = CTYPE (tolower, *s++);
+
+	*p = *s;
+	return low;
+}