ocaml/otherlibs/unix/putenv.c

47 lines
1.5 KiB
C

/***********************************************************************/
/* */
/* Objective Caml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1998 Institut National de Recherche en Informatique et */
/* en Automatique. All rights reserved. This file is distributed */
/* under the terms of the GNU Library General Public License, with */
/* the special exception on linking described in file ../../LICENSE. */
/* */
/***********************************************************************/
/* $Id$ */
#include <stdlib.h>
#include <string.h>
#include <fail.h>
#include <memory.h>
#include <mlvalues.h>
#include "unixsupport.h"
#ifdef HAS_PUTENV
CAMLprim value unix_putenv(value name, value val)
{
mlsize_t namelen = string_length(name);
mlsize_t vallen = string_length(val);
char * s = (char *) stat_alloc(namelen + 1 + vallen + 1);
memmove (s, String_val(name), namelen);
s[namelen] = '=';
memmove (s + namelen + 1, String_val(val), vallen);
s[namelen + 1 + vallen] = 0;
if (putenv(s) == -1) uerror("putenv", name);
return Val_unit;
}
#else
CAMLprim value unix_putenv(value name, value val)
{ invalid_argument("putenv not implemented"); }
#endif