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/*************************************************************************
* Copyright (C) 2021 Intel Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*************************************************************************/
#include "utils.h"
size_t strlen_safe(const char* dest, size_t dmax)
{
size_t count;
/* check null pointer */
if (NULL == dest) {
return 0UL;
}
/* check max equal zero */
if (0UL == dmax) {
return 0UL;
}
/* check dmax > 4Kb */
if (dmax > RSIZE_MAX_STR) {
return 0UL;
}
count = 0UL;
while (*dest && dmax) {
++count;
--dmax;
++dest;
}
return count;
}
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