1 files changed, 61 insertions, 0 deletions
diff --git a/lib/libc/locale/collcmp.c b/lib/libc/locale/collcmp.c
new file mode 100644
index 0000000..15dba54
--- /dev/null
+++ b/lib/libc/locale/collcmp.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 1996 by Andrey A. Chernov, Moscow, Russia.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <ctype.h>
+#include <string.h>
+#include "collate.h"
+
+int __collcmp (c1, c2)
+	u_char c1, c2;
+{
+	static char s1[2], s2[2];
+
+	if (c1 == c2)
+		return (0);
+	if (   (isascii(c1) && isascii(c2))
+	    || (!isalpha(c1) && !isalpha(c2))
+	   )
+		return (((int)c1) - ((int)c2));
+	if (isalpha(c1) && !isalpha(c2)) {
+		if (isupper(c1))
+			return ('A' - ((int)c2));
+		else
+			return ('a' - ((int)c2));
+	} else if (isalpha(c2) && !isalpha(c1)) {
+		if (isupper(c2))
+			return (((int)c1) - 'A');
+		else
+			return (((int)c1) - 'a');
+	}
+	if (isupper(c1) && islower(c2))
+		return (-1);
+	else if (islower(c1) && isupper(c2))
+		return (1);
+	s1[0] = (char) c1;
+	s2[0] = (char) c2;
+	return strcoll(s1, s2);
+}
+