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/*
* The copyright in this software is being made available under the 2-clauses
* BSD License, included below. This software may be subject to other third
* party and contributor rights, including patent rights, and no such rights
* are granted under this license.
*
* Copyright (c) 2015, Matthieu Darbois
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
*/
#ifndef OPJ_STRING_H
#define OPJ_STRING_H
#include <errno.h>
#include <string.h>
/* strnlen is not standard, strlen_s is C11... */
/* keep in mind there still is a buffer read overflow possible */
static size_t opj_strnlen_s(const char *src, size_t max_len)
{
size_t len;
if (src == NULL) {
return 0U;
}
for (len = 0U; (*src != '\0') && (len < max_len); src++, len++);
return len;
}
/* should be equivalent to C11 function except for the handler */
/* keep in mind there still is a buffer read overflow possible */
static int opj_strcpy_s(char* dst, size_t dst_size, const char* src)
{
size_t src_len = 0U;
if ((dst == NULL) || (dst_size == 0U)) {
return EINVAL;
}
if (src == NULL) {
dst[0] = '\0';
return EINVAL;
}
src_len = opj_strnlen_s(src, dst_size);
if (src_len >= dst_size) {
return ERANGE;
}
memcpy(dst, src, src_len);
dst[src_len] = '\0';
return 0;
}
#endif /* OPJ_STRING_H */
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