Source file: /~heha/hs/gputils64-210929.zip/libiberty/strndup.cpp

/* Implement the strndup function.
   Copyright 2005 Free Software Foundation, Inc.
   Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.
*/

/*

@deftypefn Extension char* strndup (const char *@var{s}, size_t @var{n})

Returns a pointer to a copy of @var{s} with at most @var{n} characters
in memory obtained from @code{malloc}, or @code{NULL} if insufficient
memory was available.  The result is always NUL terminated.

@end deftypefn

*/
#include "stdhdr.h"

FUNC(char*) strndup(const char *s, size_t n) {
  char *result;
  size_t len = strlen (s);

  if (n < len)
    len = n;

  result = (char *) malloc (len + 1);
  if (!result)
    return 0;

  result[len] = '\0';
  return (char *) memcpy (result, s, len);
}