src/util/strndup.h

   1 /*
   2  * Copyright (c) 2015 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #ifndef STRNDUP_H
  25 #define STRNDUP_H
  26
  27 #if defined(_WIN32)
  28
  29 #include <stdlib.h> // size_t
  30 #include <string.h>
  31
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 static inline char *
  37 strndup(const char *str, size_t max)
  38 {
  39    size_t n;
  40    char *ptr;
  41
  42    if (!str)
  43       return NULL;
  44
  45    n = strnlen(str, max);
  46    ptr = (char *) calloc(n + 1, sizeof(char));
  47    if (!ptr)
  48       return NULL;
  49
  50    memcpy(ptr, str, n);
  51    return ptr;
  52 }
  53
  54 #ifdef __cplusplus
  55 }
  56 #endif
  57
  58 #endif /* _WIN32 */
  59
  60 #endif /* STRNDUP_H */