From 7b1036f191679ae89e3f543a0d089a154840b174 Mon Sep 17 00:00:00 2001
From: espie <>
Date: Sat, 28 May 2011 15:16:46 +0000
Subject: [PATCH] wcs(n)casecmp support, manpage comments from jmc@, okay
 deraadt@

---
 src/include/wchar.h              |  7 +++-
 src/lib/libc/string/Makefile.inc |  6 ++--
 src/lib/libc/string/wcscasecmp.c | 61 ++++++++++++++++++++++++++++++++
 src/lib/libc/string/wmemchr.3    | 20 +++++++++--
 4 files changed, 88 insertions(+), 6 deletions(-)
 create mode 100644 src/lib/libc/string/wcscasecmp.c

diff --git a/src/include/wchar.h b/src/include/wchar.h
index ee9d528f..af8412da 100644
--- a/src/include/wchar.h
+++ b/src/include/wchar.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: wchar.h,v 1.15 2011/04/28 17:38:46 stsp Exp $	*/
+/*	$OpenBSD: wchar.h,v 1.16 2011/05/28 15:16:46 espie Exp $	*/
 /*	$NetBSD: wchar.h,v 1.16 2003/03/07 07:11:35 tshiozak Exp $	*/
 
 /*-
@@ -145,6 +145,11 @@ long int wcstol(const wchar_t * __restrict, wchar_t ** __restrict, int base);
 unsigned long int wcstoul(const wchar_t * __restrict, wchar_t ** __restrict,
 		int base);
 
+#if __POSIX_C_SOURCE >= 200809L
+int wcscasecmp(const wchar_t *, const wchar_t *);
+int wcsncasecmp(const wchar_t *, const wchar_t *, size_t);
+#endif
+
 #if __ISO_C_VISIBLE >= 1999
 float	wcstof(const wchar_t * __restrict, wchar_t ** __restrict);
 long double wcstold(const wchar_t * __restrict, wchar_t ** __restrict);
diff --git a/src/lib/libc/string/Makefile.inc b/src/lib/libc/string/Makefile.inc
index 679ba1b2..44e011e3 100644
--- a/src/lib/libc/string/Makefile.inc
+++ b/src/lib/libc/string/Makefile.inc
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile.inc,v 1.24 2011/04/04 18:16:24 stsp Exp $
+#	$OpenBSD: Makefile.inc,v 1.25 2011/05/28 15:16:46 espie Exp $
 
 # string sources
 .PATH: ${LIBCSRCDIR}/arch/${MACHINE_CPU}/string ${LIBCSRCDIR}/string
@@ -10,7 +10,7 @@ SRCS+=	bm.c memccpy.c memrchr.c strcasecmp.c strcasestr.c strcoll.c strdup.c \
 	wcslen.c wcsncat.c wcsncmp.c wcsncpy.c wcspbrk.c wcsrchr.c wcsspn.c \
 	wcsstr.c wcstok.c wcswcs.c wcswidth.c wmemchr.c wmemcmp.c wmemcpy.c \
 	wmemmove.c wmemset.c \
-	timingsafe_bcmp.c
+	timingsafe_bcmp.c wcscasecmp.c
 
 # machine-dependent net sources
 # m-d Makefile.inc must include sources for:
@@ -167,6 +167,7 @@ MLINKS+=wmemchr.3 wmemset.3
 MLINKS+=wmemchr.3 wcscat.3
 MLINKS+=wmemchr.3 wcschr.3
 MLINKS+=wmemchr.3 wcscmp.3
+MLINKS+=wmemchr.3 wcscasecmp.3
 MLINKS+=wmemchr.3 wcscpy.3
 MLINKS+=wmemchr.3 wcscspn.3
 MLINKS+=wmemchr.3 wcslcat.3
@@ -174,6 +175,7 @@ MLINKS+=wmemchr.3 wcslcpy.3
 MLINKS+=wmemchr.3 wcslen.3
 MLINKS+=wmemchr.3 wcsncat.3
 MLINKS+=wmemchr.3 wcsncmp.3
+MLINKS+=wmemchr.3 wcsncasecmp.3
 MLINKS+=wmemchr.3 wcsncpy.3
 MLINKS+=wmemchr.3 wcspbrk.3
 MLINKS+=wmemchr.3 wcsrchr.3
diff --git a/src/lib/libc/string/wcscasecmp.c b/src/lib/libc/string/wcscasecmp.c
new file mode 100644
index 00000000..d4085ad3
--- /dev/null
+++ b/src/lib/libc/string/wcscasecmp.c
@@ -0,0 +1,61 @@
+/*	$OpenBSD: wcscasecmp.c,v 1.1 2011/05/28 15:16:46 espie Exp $ */
+
+/*
+ * Copyright (c) 2011 Marc Espie
+ *
+ * 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 OPENBSD PROJECT AND CONTRIBUTORS
+ * ``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 OPENBSD
+ * PROJECT 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 <wchar.h>
+#include <wctype.h>
+#include "locale/runetype.h"
+
+int
+wcscasecmp(const wchar_t *s1, const char *s2)
+{
+	wchar_t l1, l2;
+
+	while ((l1 = towlower(*s1++)) == (l2 = towlower(*s2++))) {
+		if (l1 == 0)
+			return (0);
+	}
+	/* XXX assumes wchar_t = int */
+	return ((rune_t)l1 - (rune_t)l2);
+}
+
+int
+wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n)
+{
+	wchar_t l1, l2;
+
+	if (n == 0)
+		return (0);
+	do {
+		if (((l1 = towlower(*s1++))) != (l2 = towlower(*s2++))) {
+			/* XXX assumes wchar_t = int */
+			return ((rune_t)l1 - (rune_t)l2);
+		}
+		if (l1 == 0)
+			break;
+	} while (--n != 0);
+	return (0);
+}
diff --git a/src/lib/libc/string/wmemchr.3 b/src/lib/libc/string/wmemchr.3
index ff82c7b5..7c0740a0 100644
--- a/src/lib/libc/string/wmemchr.3
+++ b/src/lib/libc/string/wmemchr.3
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: wmemchr.3,v 1.4 2010/09/10 18:38:20 jmc Exp $
+.\"	$OpenBSD: wmemchr.3,v 1.5 2011/05/28 15:16:46 espie Exp $
 .\"
 .\"	$NetBSD: wmemchr.3,v 1.9 2003/09/08 17:54:33 wiz Exp $
 .\"
@@ -35,7 +35,7 @@
 .\"
 .\"     from: @(#)strcpy.3	8.1 (Berkeley) 6/4/93
 .\"
-.Dd $Mdocdate: September 10 2010 $
+.Dd $Mdocdate: May 28 2011 $
 .Dt WMEMCHR 3
 .Os
 .Sh NAME
@@ -47,6 +47,7 @@
 .Nm wcscat ,
 .Nm wcschr ,
 .Nm wcscmp ,
+.Nm wcscasecmp ,
 .Nm wcscpy ,
 .Nm wcscspn ,
 .Nm wcslcat ,
@@ -54,6 +55,7 @@
 .Nm wcslen ,
 .Nm wcsncat ,
 .Nm wcsncmp ,
+.Nm wcsncasecmp ,
 .Nm wcsncpy ,
 .Nm wcspbrk ,
 .Nm wcsrchr ,
@@ -78,6 +80,8 @@
 .Fn wcschr "const wchar_t *s" "wchar_t c"
 .Ft int
 .Fn wcscmp "const wchar_t *s1" "const wchar_t *s2"
+.Ft int
+.Fn wcscasecmp "const wchar_t *s1" "const wchar_t *s2"
 .Ft wchar_t *
 .Fn wcscpy "wchar_t * restrict s1" "const wchar_t * restrict s2"
 .Ft size_t
@@ -92,6 +96,8 @@
 .Fn wcsncat "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n"
 .Ft int
 .Fn wcsncmp "const wchar_t *s1" "const wchar_t * s2" "size_t n"
+.Ft int
+.Fn wcsncasecmp "const wchar_t *s1" "const wchar_t * s2" "size_t n"
 .Ft wchar_t *
 .Fn wcsncpy "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n"
 .Ft wchar_t *
@@ -117,6 +123,7 @@ counterpart, such as
 .Xr strcat 3 ,
 .Xr strchr 3 ,
 .Xr strcmp 3 ,
+.Xr strcasecmp 3 ,
 .Xr strcpy 3 ,
 .Xr strcspn 3 ,
 .Xr strlcat 3 ,
@@ -124,6 +131,7 @@ counterpart, such as
 .Xr strlen 3 ,
 .Xr strncat 3 ,
 .Xr strncmp 3 ,
+.Xr strncasecmp 3 ,
 .Xr strncpy 3 ,
 .Xr strpbrk 3 ,
 .Xr strrchr 3 ,
@@ -134,7 +142,13 @@ These functions conform to
 .St -isoC-99
 and were first introduced in
 .St -isoC-amd1 ,
-with the exception of
+except for
+.Fn wcscasecmp
+and
+.Fn wcsncasecmp ,
+which conform to
+.St -p1003.1-2008 ,
+and for
 .Fn wcslcat
 and
 .Fn wcslcpy ,