newlib-2.4.0: wide character strings

git-svn-id: svn://kolibrios.org@6557 a494cfbc-eb01-0410-851d-a64ba20cac60
2016-10-01 18:30:04 +00:00
parent 3c17dd1ccd
commit 01ff4a3818
54 changed files with 4439 additions and 52 deletions
--- a/contrib/sdk/sources/newlib/libc/string/wcsstr.c
+++ b/contrib/sdk/sources/newlib/libc/string/wcsstr.c
@@ -0,0 +1,106 @@
+/*
+FUNCTION
+	<<wcsstr>>---find a wide-character substring 
+
+ANSI_SYNOPSIS
+	#include <wchar.h>
+	wchar_t *wcsstr(const wchar_t *__restrict <[big]>,
+			const wchar_t *__restrict <[little]>);
+
+TRAD_SYNOPSIS
+	wchar_t *wcsstr(<[big]>, <[little]>
+	const wchar_t *__restrict <[big]>;
+	const wchar_t *__restrict <[little]>;
+
+DESCRIPTION
+	The <<wcsstr>> function locates the first occurrence in the
+	wide-character string pointed to by <[big]> of the sequence of
+	wide characters (excluding the terminating null wide character) in the
+	wide-character string pointed to by <[little]>.
+
+RETURNS
+	On successful completion, <<wcsstr>> returns a pointer to the located
+	wide-character string, or a null pointer if the wide-character string
+	is not found.
+
+	If <[little]> points to a wide-character string with zero length,
+	the function returns <[big]>.
+
+PORTABILITY
+<<wcsstr>> is ISO/IEC 9899/AMD1:1995 (ISO C).
+
+*/
+
+/*	$NetBSD: wcsstr.c,v 1.1 2000/12/23 23:14:37 itojun Exp $	*/
+
+/*-
+ * Copyright (c)1999 Citrus Project,
+ * 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 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 AUTHOR 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.
+ *
+ *	citrus Id: wcsstr.c,v 1.2 2000/12/21 05:07:25 itojun Exp
+ */
+
+#include <_ansi.h>
+#include <stddef.h>
+#include <wchar.h>
+
+wchar_t *
+_DEFUN (wcsstr, (big, little),
+	_CONST wchar_t *__restrict big _AND
+	_CONST wchar_t *__restrict little)
+{
+  _CONST wchar_t *p;
+  _CONST wchar_t *q;
+  _CONST wchar_t *r;
+
+  if (!*little)
+    {
+      /* LINTED interface specification */
+      return (wchar_t *) big;
+    }
+  if (wcslen (big) < wcslen (little))
+    return NULL;
+
+  p = big;
+  q = little;
+  while (*p)
+    {
+      q = little;
+      r = p;
+      while (*q)
+	{
+	  if (*r != *q)
+	    break;
+	  q++;
+	  r++;
+	}
+      if (!*q)
+	{
+	  /* LINTED interface specification */
+	  return (wchar_t *) p;
+	}
+      p++;
+    }
+  return NULL;
+}