151 lines
4.7 KiB
C
151 lines
4.7 KiB
C
/************************************************************************
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**
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** @file strlcpy.h
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** @author Roman Telezhynskyi <dismine(at)gmail.com>
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** @date December 20, 2016
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**
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** @brief
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** @copyright
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** This source code is part of the Valentine project, a pattern making
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** program, whose allow create and modeling patterns of clothing.
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** Copyright (C) 2013-2016 Valentina project
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** <https://bitbucket.org/dismine/valentina> All Rights Reserved.
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**
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** Valentina is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** Valentina is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with Valentina. If not, see <http://www.gnu.org/licenses/>.
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**
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*************************************************************************/
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/*
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* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef VALENTINA_STRLCPY_H
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#define VALENTINA_STRLCPY_H
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/* This function comes from BSD */
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#if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) && \
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!defined(__bsdi__) && !defined(__APPLE__)
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#include <sys/types.h>
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#include <string.h>
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#include "../vmisc/diagnostic.h"
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QT_WARNING_PUSH
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QT_WARNING_DISABLE_CLANG("-Wsign-conversion")
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/*
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* Copy src to string dst of size siz. At most siz-1 characters
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* will be copied. Always NUL terminates (unless siz == 0).
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* Returns strlen(src); if retval >= siz, truncation occurred.
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*/
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inline size_t strlcpy(char *dst, const char *src, size_t siz)
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{
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char *d = dst;
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const char *s = src;
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size_t n = siz;
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/* Copy as many bytes as will fit */
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if (n != 0)
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{
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while (--n != 0)
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{
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if ((*d++ = *s++) == '\0')
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{
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break;
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}
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}
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}
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/* Not enough room in dst, add NUL and traverse rest of src */
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if (n == 0)
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{
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if (siz != 0)
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{
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*d = '\0'; /* NUL-terminate dst */
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}
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while (*s++)
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;
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}
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return(s - src - 1); /* count does not include NUL */
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}
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/*
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* Appends src to string dst of size siz (unlike strncat, siz is the
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* full size of dst, not space left). At most siz-1 characters
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* will be copied. Always NUL terminates (unless siz <= strlen(dst)).
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* Returns strlen(src) + MIN(siz, strlen(initial dst)).
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* If retval >= siz, truncation occurred.
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*/
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inline size_t strlcat(char *dst, const char *src, size_t siz)
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{
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char *d = dst;
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const char *s = src;
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size_t n = siz;
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size_t dlen;
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/* Find the end of dst and adjust bytes left but don't go past end */
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while (n-- != 0 && *d != '\0')
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{
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d++;
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}
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dlen = d - dst;
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n = siz - dlen;
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if (n == 0)
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{
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return(dlen + strlen(s));
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}
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while (*s != '\0')
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{
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if (n != 1)
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{
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*d++ = *s;
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n--;
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}
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s++;
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}
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*d = '\0';
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return(dlen + (s - src)); /* count does not include NUL */
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}
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QT_WARNING_POP
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#endif /* ! __*BSD__ */
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#endif // VALENTINA_STRLCPY_H
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