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76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/*
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* Copyright(c) 2013 Tim Ruehsen
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* Copyright(c) 2015-2017 Free Software Foundation, Inc.
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*
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* This file is part of libwget.
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*
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* Libwget is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser 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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* Libwget 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libwget. If not, see <https://www.gnu.org/licenses/>.
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*
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*
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* a collection of compatibility routines
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*
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* Changelog
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* 11.01.2013 Tim Ruehsen created
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*
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*/
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#include <config.h>
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#include <stddef.h>
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#include <string.h>
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#include <wget.h>
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/**
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* \ingroup libwget-utils
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* \param[out] dst Output string buffer
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* \param[in] src Input string
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* \param[in] size Size of \p dst
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* \return Length of \p src
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*
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* Copy string \p src into \p dst with overflow checking.
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*
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* This is the same as snprintf(dst,size,"%s",src) but faster and more elegant.
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*
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* If \p src is %NULL, the return value is 0 and nothing is written.
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* If \ dst is %NULL, the return value is the length of \p src and nothing is written.
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*/
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size_t wget_strlcpy(char *dst, const char *src, size_t size)
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{
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if (!src)
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return 0;
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if (!dst)
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return strlen(src);
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#ifndef HAVE_STRLCPY
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const char *old = src;
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// Copy as many bytes as will fit
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if (size) {
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while (--size) {
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if (!(*dst++ = *src++))
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return src - old - 1;
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}
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*dst = 0;
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}
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while (*src++);
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return src - old - 1;
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#else
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return strlcpy(dst, src, size);
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#endif
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}
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