/*

 * Copyright (C) 2003 Sun Microsystems Inc.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library 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

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 *

 * Authors: Mark McLoughlin <mark@skynet.ie>

 */

#include "config.h"

#include <string.h>

#include <stdlib.h>

#include "gdkspawn.h"

#include <glib.h>

#include <gdk/gdk.h>

#include "gdkalias.h"

typedef struct {

  char *display;

  GSpawnChildSetupFunc child_setup;

  gpointer user_data;

} UserChildSetup;

/*

 * Set the DISPLAY variable, and then call the user-specified child setup

 * function.  This is required so that applications can use gdk_spawn_* and 

 * call putenv() in their child_setup functions.

 */

static void

set_environment (gpointer user_data)

{

  UserChildSetup *setup = user_data;

  g_setenv ("DISPLAY", setup->display, TRUE);

  if (setup->child_setup)

    setup->child_setup (setup->user_data);

}

/**

 * gdk_spawn_on_screen:

 * @screen: a #GdkScreen

 * @working_directory: child's current working directory, or %NULL to 

 *   inherit parent's

 * @argv: child's argument vector

 * @envp: child's environment, or %NULL to inherit parent's

 * @flags: flags from #GSpawnFlags

 * @child_setup: function to run in the child just before exec()

 * @user_data: user data for @child_setup

 * @child_pid: return location for child process ID, or %NULL

 * @error: return location for error

 *

 * Like g_spawn_async(), except the child process is spawned in such

 * an environment that on calling gdk_display_open() it would be

 * returned a #GdkDisplay with @screen as the default screen.

 *

 * This is useful for applications which wish to launch an application

 * on a specific screen.

 *

 * Return value: %TRUE on success, %FALSE if error is set

 *

 * Since: 2.4

 *

 * Deprecated: 2.24: This function is being removed in 3.0. Use

 *     either g_spawn_sync(), g_spawn_async(), or #GdkAppLaunchContext instead.

 **/

gboolean

gdk_spawn_on_screen (GdkScreen             *screen,

		     const gchar           *working_directory,

		     gchar                **argv,

		     gchar                **envp,

		     GSpawnFlags            flags,

		     GSpawnChildSetupFunc   child_setup,

		     gpointer               user_data,

		     gint                  *child_pid,

		     GError               **error)

{

  UserChildSetup setup_data;

  g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);

  setup_data.display = gdk_screen_make_display_name (screen);

  setup_data.child_setup = child_setup;

  setup_data.user_data = user_data;

  return g_spawn_async (working_directory,

			  argv,

			  envp,

			  flags,

			  set_environment,

			  &setup_data,

			  child_pid,

			  error);

}

/**

 * gdk_spawn_on_screen_with_pipes:

 * @screen: a #GdkScreen

 * @working_directory: child's current working directory, or %NULL to 

 *   inherit parent's

 * @argv: child's argument vector

 * @envp: child's environment, or %NULL to inherit parent's

 * @flags: flags from #GSpawnFlags

 * @child_setup: function to run in the child just before exec()

 * @user_data: user data for @child_setup

 * @child_pid: return location for child process ID, or %NULL

 * @standard_input: return location for file descriptor to write to 

 *   child's stdin, or %NULL

 * @standard_output: return location for file descriptor to read child's 

 *   stdout, or %NULL

 * @standard_error: return location for file descriptor to read child's 

 *   stderr, or %NULL

 * @error: return location for error

 *

 * Like g_spawn_async_with_pipes(), except the child process is

 * spawned in such an environment that on calling gdk_display_open()

 * it would be returned a #GdkDisplay with @screen as the default

 * screen.

 *

 * This is useful for applications which wish to launch an application

 * on a specific screen.

 *

 * Return value: %TRUE on success, %FALSE if an error was set

 *

 * Since: 2.4

 *

 * Deprecated: 2.24: This function is being removed in 3.0. Use

 *     either g_spawn_async_with_pipes() or #GdkAppLaunchContext instead.

 **/

gboolean

gdk_spawn_on_screen_with_pipes (GdkScreen            *screen,

				const gchar          *working_directory,

				gchar               **argv,

				gchar               **envp,

				GSpawnFlags           flags,

				GSpawnChildSetupFunc  child_setup,

				gpointer              user_data,

				gint                 *child_pid,

				gint                 *standard_input,

				gint                 *standard_output,

				gint                 *standard_error,

				GError              **error)

{

  UserChildSetup setup_data;

  g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);

  setup_data.display = gdk_screen_make_display_name (screen);

  setup_data.child_setup = child_setup;

  setup_data.user_data = user_data;

  return g_spawn_async_with_pipes (working_directory,

				     argv,

				     envp,

				     flags,

				     set_environment,

				     &setup_data,

				     child_pid,

				     standard_input,

				     standard_output,

				     standard_error,

				     error);

}

/**

 * gdk_spawn_command_line_on_screen:

 * @screen: a #GdkScreen

 * @command_line: a command line

 * @error: return location for errors

 *

 * Like g_spawn_command_line_async(), except the child process is

 * spawned in such an environment that on calling gdk_display_open()

 * it would be returned a #GdkDisplay with @screen as the default

 * screen.

 *

 * This is useful for applications which wish to launch an application

 * on a specific screen.

 *

 * Return value: %TRUE on success, %FALSE if error is set.

 *

 * Since: 2.4

 *

 * Deprecated: 2.24: This function is being removed in 3.0. Use

 *     either g_spawn_command_line_sync(), g_spawn_command_line_async() or 

 *     #GdkAppLaunchContext instead.

 **/

gboolean

gdk_spawn_command_line_on_screen (GdkScreen    *screen,

				  const gchar  *command_line,

				  GError      **error)

{

  gchar    **argv = NULL;

  gboolean   retval;

  g_return_val_if_fail (command_line != NULL, FALSE);

  if (!g_shell_parse_argv (command_line,

			   NULL, &argv,

			   error))

    return FALSE;

  retval = gdk_spawn_on_screen (screen,

				NULL, argv, NULL,

				G_SPAWN_SEARCH_PATH,

				NULL, NULL, NULL,

				error);

  g_strfreev (argv);

  return retval;

}

#define __GDK_SPAWN_X11_C__

#include "gdkaliasdef.c"