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/wcslcpy.c
+++ b/contrib/sdk/sources/newlib/libc/string/wcslcpy.c
@@ -0,0 +1,102 @@
+/*
+FUNCTION
+	<<wcslcpy>>---copy a wide-character string to specified length
+
+ANSI_SYNOPSIS
+	#include <wchar.h>
+	size_t wcslcpy(wchar_t *<[dst]>, const wchar_t *<[src]>, size_t <[siz]>);
+
+TRAD_SYNOPSIS
+	#include <wchar.h>
+	size_t wcslcpy(<[dst]>, <[src]>, <[siz]>)
+	wchar_t *<[dst]>;
+	const wchar_t *<[src]>;
+	size_t <[siz]>;
+
+DESCRIPTION
+	<<wcslcpy>> copies wide characters from <[src]> to <[dst]>
+	such that up to <[siz]> - 1 characters are copied.  A
+	terminating null is appended to the result, unless <[siz]>
+	is zero.
+
+RETURNS
+	<<wcslcpy>> returns the number of wide characters in <[src]>,
+	not including the terminating null wide character.  If the
+	return value is greater than or equal to <[siz]>, then
+	not all wide characters were copied from <[src]> and truncation
+	occurred.
+
+PORTABILITY
+No supporting OS subroutines are required.
+*/
+
+/*	$NetBSD: wcslcpy.c,v 1.1 2000/12/23 23:14:36 itojun Exp $	*/
+/*	from OpenBSD: strlcpy.c,v 1.4 1999/05/01 18:56:41 millert Exp 	*/
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ * 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.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``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 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 <_ansi.h>
+#include <wchar.h>
+
+/*
+ * Copy src to string dst of size siz.  At most siz-1 characters
+ * will be copied.  Always NUL terminates (unless siz == 0).
+ * Returns wcslen(src); if retval >= siz, truncation occurred.
+ */
+size_t
+_DEFUN (wcslcpy, (dst, src, siz),
+	wchar_t * dst _AND
+	_CONST wchar_t * src _AND
+	size_t siz)
+{
+  wchar_t *d = dst;
+  _CONST wchar_t *s = src;
+  size_t n = siz;
+
+  /* Copy as many bytes as will fit */
+  if (n != 0 && --n != 0)
+    {
+      do
+	{
+	  if ((*d++ = *s++) == 0)
+	    break;
+	}
+      while (--n != 0);
+    }
+
+  /* Not enough room in dst, add NUL and traverse rest of src */
+  if (n == 0)
+    {
+      if (siz != 0)
+	*d = '\0';		/* NUL-terminate dst */
+      while (*s++)
+	;
+    }
+
+  return (s - src - 1);		/* count does not include NUL */
+}