| /* $NetBSD: strxfrm.c,v 1.12 2012/06/25 22:32:46 abs Exp $ */ |
| |
| /*- |
| * Copyright (c) 1990, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * This code is derived from software contributed to Berkeley by |
| * Chris Torek. |
| * |
| * 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. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 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 <sys/cdefs.h> |
| #if defined(LIBC_SCCS) && !defined(lint) |
| #if 0 |
| static char sccsid[] = "@(#)strxfrm.c 8.1 (Berkeley) 6/4/93"; |
| #else |
| __RCSID("$NetBSD: strxfrm.c,v 1.12 2012/06/25 22:32:46 abs Exp $"); |
| #endif |
| #endif /* LIBC_SCCS and not lint */ |
| |
| #include <assert.h> |
| #include <string.h> |
| |
| /* |
| * Transform src, storing the result in dst, such that |
| * strcmp() on transformed strings returns what strcoll() |
| * on the original untransformed strings would return. |
| */ |
| size_t |
| strxfrm(char *dst, const char *src, size_t n) |
| { |
| size_t srclen, copysize; |
| |
| _DIAGASSERT(src != NULL); |
| |
| /* |
| * Since locales are unimplemented, this is just a copy. |
| */ |
| srclen = strlen(src); |
| if (n != 0) { |
| _DIAGASSERT(dst != NULL); |
| copysize = srclen < n ? srclen : n - 1; |
| (void)memcpy(dst, src, copysize); |
| dst[copysize] = 0; |
| } |
| return (srclen); |
| } |