mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-11 19:49:32 +00:00
67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
|
/* go-setenv.c -- set the C environment from Go.
|
||
|
|
|
||
|
|
Copyright 2011 The Go Authors. All rights reserved.
|
||
|
|
Use of this source code is governed by a BSD-style
|
||
|
|
license that can be found in the LICENSE file. */
|
||
|
|
|
||
|
|
#include "config.h"
|
||
|
|
|
||
|
|
#include <stddef.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
#include "go-alloc.h"
|
||
|
|
#include "go-string.h"
|
||
|
|
|
||
|
|
/* Set the C environment from Go. This is called by syscall.Setenv. */
|
||
|
|
|
||
|
|
void setenv_c (struct __go_string, struct __go_string)
|
||
|
|
__asm__ ("libgo_syscall.syscall.setenv_c");
|
||
|
|
|
||
|
|
void
|
||
|
|
setenv_c (struct __go_string k, struct __go_string v)
|
||
|
|
{
|
||
|
|
const unsigned char *ks;
|
||
|
|
unsigned char *kn;
|
||
|
|
const unsigned char *vs;
|
||
|
|
unsigned char *vn;
|
||
|
|
|
||
|
|
ks = k.__data;
|
||
|
|
kn = NULL;
|
||
|
|
vs = v.__data;
|
||
|
|
vn = NULL;
|
||
|
|
|
||
|
|
#ifdef HAVE_SETENV
|
||
|
|
|
||
|
|
if (ks[k.__length] != 0)
|
||
|
|
{
|
||
|
|
kn = __go_alloc (k.__length + 1);
|
||
|
|
__builtin_memcpy (kn, ks, k.__length);
|
||
|
|
ks = kn;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (vs[v.__length] != 0)
|
||
|
|
{
|
||
|
|
vn = __go_alloc (v.__length + 1);
|
||
|
|
__builtin_memcpy (vn, vs, v.__length);
|
||
|
|
vs = vn;
|
||
|
|
}
|
||
|
|
|
||
|
|
setenv ((const char *) ks, (const char *) vs, 1);
|
||
|
|
|
||
|
|
#else /* !defined(HAVE_SETENV) */
|
||
|
|
|
||
|
|
kn = malloc (k.__length + v.__length + 2);
|
||
|
|
__builtin_memcpy (kn, ks, k.__length);
|
||
|
|
kn[k.__length] = '=';
|
||
|
|
__builtin_memcpy (kn + k.__length + 1, vs, v.__length);
|
||
|
|
kn[k.__length + v.__length + 1] = '\0';
|
||
|
|
putenv ((char *) kn);
|
||
|
|
|
||
|
|
#endif /* !defined(HAVE_SETENV) */
|
||
|
|
|
||
|
|
if (kn != NULL)
|
||
|
|
__go_free (kn);
|
||
|
|
if (vn != NULL)
|
||
|
|
__go_free (vn);
|
||
|
|
}
|