StdLib: Revise the meaning of several feature macros.

[mirror_edk2.git] / StdLib / LibC / Locale / wcsxfrm.c

/*  $NetBSD: wcsxfrm.c,v 1.2 2006/10/15 16:14:08 christos Exp $ */\r
\r
/*-\r
 * Copyright (c)2003 Citrus Project,\r
 * All rights reserved.\r
 *\r
 * Redistribution and use in source and binary forms, with or without\r
 * modification, are permitted provided that the following conditions\r
 * are met:\r
 * 1. Redistributions of source code must retain the above copyright\r
 *    notice, this list of conditions and the following disclaimer.\r
 * 2. Redistributions in binary form must reproduce the above copyright\r
 *    notice, this list of conditions and the following disclaimer in the\r
 *    documentation and/or other materials provided with the distribution.\r
 *\r
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND\r
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE\r
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
 * SUCH DAMAGE.\r
 */\r
#include  <LibConfig.h>\r
#include  <sys/EfiCdefs.h>\r
#if defined(LIBC_SCCS) && !defined(lint)\r
__RCSID("$NetBSD: wcsxfrm.c,v 1.2 2006/10/15 16:14:08 christos Exp $");\r
#endif /* LIBC_SCCS and not lint */\r
\r
#include "namespace.h"\r
\r
#include <assert.h>\r
#include <wchar.h>\r
\r
/*\r
 * Compare strings with using collating information.\r
 */\r
size_t\r
wcsxfrm(\r
  wchar_t *s1,\r
  const wchar_t *s2,\r
  size_t n\r
  )\r
{\r
  size_t len;\r
\r
  /* XXX: LC_COLLATE should be implemented. */\r
\r
  len = wcslen(s2);\r
  if (len<n)\r
    wcscpy(s1, s2);\r
  else {\r
    /*\r
     * SUSv3 says:\r
     *   If the value returned is n or more, the contents\r
     *   of the array pointed to by ws1 are unspecified.\r
     */\r
    /* thus, do nothing */\r
  }\r
\r
  return (len);\r
}\r