/***************************************************************************

  replace_t.h

  Replacement functions.

  (c) 2000-2007 Benoit Minisini <gambas@users.sourceforge.net>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 1, or (at your option)
  any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

***************************************************************************/

#include "gb_replace.h"

#include <stdlib.h>
#include <string.h>
#include <fcntl.h>

#ifndef HAVE_SETENV

int setenv(const char *name, const char *value, int overwrite)
{
  char *env;
  int env_size; 

  if (!name || *name == 0)
    return (-1);

  if (overwrite == 0)
  {
    if (getenv(name))
      return 0;
  }

  env_size = strlen(name) + strlen(value) + 2;
  env = malloc(env_size);
  if (!env)
    return (-1);

  strcpy(env, name);
  strcat(env, "=");
  strcat(env, value);
  putenv(env);

  return 0;
}

#endif

#ifndef HAVE_UNSETENV

extern char **environ;

void unsetenv(const char *name)
{
  size_t len;
  char **ep;

  if (name == NULL || *name == '\0' || strchr (name, '=') != NULL)
    return;

  len = strlen(name);

  ep = environ;
  while (*ep != NULL)
  {
    if (!strncmp (*ep, name, len) && (*ep)[len] == '=')
    {
      char **dp = ep;

      do
        dp[0] = dp[1];
      while (*dp++);
    }
    else
      ++ep;
  }
}

#endif

#ifndef HAVE_GETDOMAINNAME

int getdomainname(char *name, size_t len)
{
#if defined(HAVE_SYSINFO) && defined(SI_SRPC_DOMAIN)
  sysinfo(SI_SRPC_DOMAIN, name, len);
#else
  *name = 0;
  return 0;
#endif
}

#endif

#ifndef HAVE_GETPT

int getpt(void)
{
#ifdef OS_FREEBSD
	return posix_openpt(O_RDWR | O_NOCTTY);
#else
	return -1;
#endif
}

#endif