homework-jianmu/2.0/deps/MsvcLibX/src/strndup.c

35 lines
1.2 KiB
C

/*****************************************************************************\
* *
* Filename strndup.c *
* *
* Description: WIN32 port of standard C library's strndup() *
* *
* Notes: *
* *
* History: *
* 2014-02-13 JFL Created this module. *
* *
* Copyright 2016 Hewlett Packard Enterprise Development LP *
* Licensed under the Apache 2.0 license - www.apache.org/licenses/LICENSE-2.0 *
\*****************************************************************************/
#define _CRT_SECURE_NO_WARNINGS 1 /* Avoid Visual C++ security warnings */
#include <string.h>
#include <stdlib.h>
/* Duplicate a string, up to at most size characters */
char *strndup(const char *s, size_t size) {
size_t l;
char *s2;
l = strlen(s);
if (l > size) l=size;
s2 = malloc(l+1);
if (s2) {
strncpy(s2, s, l);
s2[l] = '\0';
}
return s2;
}