newlib-cygwin/newlib/libc/argz/argz_create.c

50 lines
932 B
C

/* Copyright (C) 2002 by Red Hat, Incorporated. All rights reserved.
*
* Permission to use, copy, modify, and distribute this software
* is freely granted, provided that this notice is preserved.
*/
#include <errno.h>
#include <sys/types.h>
#include <string.h>
#include <stdlib.h>
error_t
_DEFUN (argz_create, (argv, argz, argz_len),
char *const argv[] _AND
char **argz _AND
size_t *argz_len)
{
int argc = 0;
int i = 0;
int len = 0;
char *iter;
*argz_len = 0;
if (*argv == NULL)
{
*argz = NULL;
return 0;
}
while (argv[argc])
{
*argz_len += (strlen(argv[argc]) + 1);
argc++;
}
/* There are argc strings to copy into argz. */
if(!(*argz = (char *)malloc(*argz_len)))
return ENOMEM;
iter = *argz;
for(i = 0; i < argc; i++)
{
len = strlen(argv[i]) + 1;
memcpy(iter, argv[i], len);
iter += len;
}
return 0;
}