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392492c0f8
2006-12-10 Matthias Clasen <mclasen@redhat.com>
* configure.in: Check for crt_extern.h and _NSGetEnviron.
* gdk/x11/gdkspawn-x11.c: Fix compilation on Darwin where
environ is not available. (#384168, Min Sik Kim)
266 lines
7.3 KiB
C
266 lines
7.3 KiB
C
/*
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* Copyright (C) 2003 Sun Microsystems Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Authors: Mark McLoughlin <mark@skynet.ie>
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*/
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#include <config.h>
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#include <string.h>
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#ifdef HAVE_CRT_EXTERNS_H
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#include <crt_externs.h> /* for _NSGetEnviron */
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#endif
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#include "gdkspawn.h"
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#include <glib.h>
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#include <gdk/gdk.h>
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#include "gdkalias.h"
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#ifdef HAVE__NSGETENVIRON
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#define environ (*_NSGetEnviron())
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#else
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/* According to the Single Unix Specification, environ is not in
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* any system header, although unistd.h often declares it.
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*/
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extern char **environ;
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#endif
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/**
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* gdk_make_spawn_environment_for_screen:
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* @screen: A #GdkScreen
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* @envp: program environment to copy, or %NULL to use current environment.
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*
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* Returns a modified copy of the program environment @envp (or the current
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* environment if @envp is %NULL) with <envar>DISPLAY</envar> set such that
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* a launched application (which calls gdk_display_open()) inheriting this
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* environment would have @screen as its default screen..
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*
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* Returns: a newly-allocated %NULL-terminated array of strings.
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* Use g_strfreev() to free it.
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*
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* Since: 2.4
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**/
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static gchar **
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gdk_spawn_make_environment_for_screen (GdkScreen *screen,
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gchar **envp)
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{
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gchar **retval = NULL;
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gchar *display_name;
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gint display_index = -1;
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gint i, env_len;
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g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
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if (envp == NULL)
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envp = environ;
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for (env_len = 0; envp[env_len]; env_len++)
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if (strncmp (envp[env_len], "DISPLAY", strlen ("DISPLAY")) == 0)
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display_index = env_len;
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retval = g_new (char *, env_len + 1);
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retval[env_len] = NULL;
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display_name = gdk_screen_make_display_name (screen);
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for (i = 0; i < env_len; i++)
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if (i == display_index)
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retval[i] = g_strconcat ("DISPLAY=", display_name, NULL);
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else
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retval[i] = g_strdup (envp[i]);
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g_assert (i == env_len);
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g_free (display_name);
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return retval;
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}
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/**
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* gdk_spawn_on_screen:
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* @screen: a #GdkScreen
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* @working_directory: child's current working directory, or %NULL to
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* inherit parent's
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* @argv: child's argument vector
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* @envp: child's environment, or %NULL to inherit parent's
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* @flags: flags from #GSpawnFlags
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* @child_setup: function to run in the child just before exec()
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* @user_data: user data for @child_setup
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* @child_pid: return location for child process ID, or %NULL
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* @error: return location for error
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*
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* Like g_spawn_async(), except the child process is spawned in such
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* an environment that on calling gdk_display_open() it would be
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* returned a #GdkDisplay with @screen as the default screen.
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*
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* This is useful for applications which wish to launch an application
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* on a specific screen.
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*
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* Return value: %TRUE on success, %FALSE if error is set
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*
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* Since: 2.4
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**/
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gboolean
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gdk_spawn_on_screen (GdkScreen *screen,
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const gchar *working_directory,
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gchar **argv,
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gchar **envp,
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GSpawnFlags flags,
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GSpawnChildSetupFunc child_setup,
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gpointer user_data,
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gint *child_pid,
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GError **error)
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{
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gchar **new_envp;
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gboolean retval;
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g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
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new_envp = gdk_spawn_make_environment_for_screen (screen, envp);
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retval = g_spawn_async (working_directory,
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argv,
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new_envp,
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flags,
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child_setup,
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user_data,
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child_pid,
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error);
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g_strfreev (new_envp);
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return retval;
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}
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/**
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* gdk_spawn_on_screen_with_pipes:
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* @screen: a #GdkScreen
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* @working_directory: child's current working directory, or %NULL to
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* inherit parent's
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* @argv: child's argument vector
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* @envp: child's environment, or %NULL to inherit parent's
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* @flags: flags from #GSpawnFlags
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* @child_setup: function to run in the child just before exec()
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* @user_data: user data for @child_setup
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* @child_pid: return location for child process ID, or %NULL
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* @standard_input: return location for file descriptor to write to
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* child's stdin, or %NULL
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* @standard_output: return location for file descriptor to read child's
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* stdout, or %NULL
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* @standard_error: return location for file descriptor to read child's
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* stderr, or %NULL
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* @error: return location for error
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*
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* Like g_spawn_async_with_pipes(), except the child process is
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* spawned in such an environment that on calling gdk_display_open()
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* it would be returned a #GdkDisplay with @screen as the default
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* screen.
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*
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* This is useful for applications which wish to launch an application
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* on a specific screen.
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*
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* Return value: %TRUE on success, %FALSE if an error was set
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*
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* Since: 2.4
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**/
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gboolean
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gdk_spawn_on_screen_with_pipes (GdkScreen *screen,
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const gchar *working_directory,
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gchar **argv,
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gchar **envp,
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GSpawnFlags flags,
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GSpawnChildSetupFunc child_setup,
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gpointer user_data,
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gint *child_pid,
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gint *standard_input,
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gint *standard_output,
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gint *standard_error,
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GError **error)
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{
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gchar **new_envp;
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gboolean retval;
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g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
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new_envp = gdk_spawn_make_environment_for_screen (screen, envp);
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retval = g_spawn_async_with_pipes (working_directory,
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argv,
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new_envp,
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flags,
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child_setup,
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user_data,
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child_pid,
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standard_input,
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standard_output,
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standard_error,
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error);
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g_strfreev (new_envp);
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return retval;
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}
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/**
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* gdk_spawn_command_line_on_screen:
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* @screen: a #GdkScreen
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* @command_line: a command line
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* @error: return location for errors
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*
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* Like g_spawn_command_line_async(), except the child process is
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* spawned in such an environment that on calling gdk_display_open()
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* it would be returned a #GdkDisplay with @screen as the default
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* screen.
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*
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* This is useful for applications which wish to launch an application
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* on a specific screen.
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*
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* Return value: %TRUE on success, %FALSE if error is set.
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*
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* Since: 2.4
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**/
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gboolean
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gdk_spawn_command_line_on_screen (GdkScreen *screen,
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const gchar *command_line,
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GError **error)
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{
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gchar **argv = NULL;
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gboolean retval;
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g_return_val_if_fail (command_line != NULL, FALSE);
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if (!g_shell_parse_argv (command_line,
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NULL, &argv,
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error))
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return FALSE;
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retval = gdk_spawn_on_screen (screen,
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NULL, argv, NULL,
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G_SPAWN_SEARCH_PATH,
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NULL, NULL, NULL,
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error);
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g_strfreev (argv);
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return retval;
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}
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#define __GDK_SPAWN_X11_C__
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#include "gdkaliasdef.c"
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