2 Main program for the Midnight Commander
4 Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
5 2003, 2004, 2005, 2006, 2007, 2009, 2011
6 The Free Software Foundation, Inc.
9 Miguel de Icaza, 1994, 1995, 1996, 1997
10 Janne Kukonlehto, 1994, 1995
13 This file is part of the Midnight Commander.
15 The Midnight Commander is free software: you can redistribute it
16 and/or modify it under the terms of the GNU General Public License as
17 published by the Free Software Foundation, either version 3 of the License,
18 or (at your option) any later version.
20 The Midnight Commander is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
25 You should have received a copy of the GNU General Public License
26 along with this program. If not, see <http://www.gnu.org/licenses/>.
30 * \brief Source: this is a main module
38 #include <pwd.h> /* for username in xterm title */
45 #include "lib/global.h"
47 #include "lib/event.h"
48 #include "lib/tty/tty.h"
49 #include "lib/tty/key.h" /* For init_key() */
51 #include "lib/filehighlight.h"
52 #include "lib/fileloc.h"
53 #include "lib/strutil.h"
55 #include "lib/vfs/vfs.h" /* vfs_init(), vfs_shut() */
57 #include "filemanager/midnight.h" /* current_panel */
58 #include "filemanager/treestore.h" /* tree_store_save */
59 #include "filemanager/layout.h" /* command_prompt */
60 #include "filemanager/ext.h" /* flush_extension_file() */
61 #include "filemanager/command.h" /* cmdline */
62 #include "filemanager/panel.h" /* panalized_panel */
64 #include "vfs/plugins_init.h"
66 #include "events_init.h"
68 #ifdef ENABLE_SUBSHELL
71 #include "setup.h" /* load_setup() */
74 #include "lib/charsets.h"
75 #include "selcodepage.h"
76 #endif /* HAVE_CHARSET */
78 #include "consaver/cons.saver.h" /* cons_saver_pid */
80 /*** global variables ****************************************************************************/
82 /*** file scope macro definitions ****************************************************************/
84 /*** file scope type declarations ****************************************************************/
86 /*** file scope variables ************************************************************************/
88 /*** file scope functions ************************************************************************/
89 /* --------------------------------------------------------------------------------------------- */
94 const char *current_system_codepage
= NULL
;
96 current_system_codepage
= str_detect_termencoding ();
100 const char *_display_codepage
;
102 _display_codepage
= get_codepage_id (mc_global
.display_codepage
);
104 if (strcmp (_display_codepage
, current_system_codepage
) != 0)
106 mc_global
.display_codepage
= get_codepage_index (current_system_codepage
);
107 if (mc_global
.display_codepage
== -1)
108 mc_global
.display_codepage
= 0;
110 mc_config_set_string (mc_main_config
, CONFIG_MISC_SECTION
, "display_codepage",
116 mc_global
.utf8_display
= str_isutf8 (current_system_codepage
);
119 /* --------------------------------------------------------------------------------------------- */
121 /** POSIX version. The only version we support. */
125 const char *shell_env
;
126 const char *datadir_env
;
128 shell_env
= getenv ("SHELL");
129 if ((shell_env
== NULL
) || (shell_env
[0] == '\0'))
133 pwd
= getpwuid (geteuid ());
135 mc_global
.tty
.shell
= g_strdup (pwd
->pw_shell
);
138 mc_global
.tty
.shell
= g_strdup (shell_env
);
140 if ((mc_global
.tty
.shell
== NULL
) || (mc_global
.tty
.shell
[0] == '\0'))
142 g_free (mc_global
.tty
.shell
);
143 mc_global
.tty
.shell
= g_strdup ("/bin/sh");
146 /* This is the directory, where MC was installed, on Unix this is DATADIR */
147 /* and can be overriden by the MC_DATADIR environment variable */
148 datadir_env
= g_getenv ("MC_DATADIR");
149 if (datadir_env
!= NULL
)
150 mc_global
.sysconfig_dir
= g_strdup (datadir_env
);
152 mc_global
.sysconfig_dir
= g_strdup (SYSCONFDIR
);
154 mc_global
.share_data_dir
= g_strdup (DATADIR
);
156 /* Set up temporary directory */
160 /* --------------------------------------------------------------------------------------------- */
163 sigchld_handler_no_subshell (int sig
)
168 if (!mc_global
.tty
.console_flag
!= '\0')
171 /* COMMENT: if it were true that after the call to handle_console(..INIT)
172 the value of mc_global.tty.console_flag never changed, we could simply not install
173 this handler at all if (!mc_global.tty.console_flag && !mc_global.tty.use_subshell). */
175 /* That comment is no longer true. We need to wait() on a sigchld
176 handler (that's at least what the tarfs code expects currently). */
178 pid
= waitpid (cons_saver_pid
, &status
, WUNTRACED
| WNOHANG
);
180 if (pid
== cons_saver_pid
)
183 if (WIFSTOPPED (status
))
185 /* Someone has stopped cons.saver - restart it */
190 /* cons.saver has died - disable console saving */
191 handle_console (CONSOLE_DONE
);
192 mc_global
.tty
.console_flag
= '\0';
195 /* If we got here, some other child exited; ignore it */
196 #endif /* __linux__ */
201 /* --------------------------------------------------------------------------------------------- */
206 struct sigaction sigchld_action
;
208 sigchld_action
.sa_handler
=
209 #ifdef ENABLE_SUBSHELL
210 mc_global
.tty
.use_subshell
? sigchld_handler
:
211 #endif /* ENABLE_SUBSHELL */
212 sigchld_handler_no_subshell
;
214 sigemptyset (&sigchld_action
.sa_mask
);
217 sigchld_action
.sa_flags
= SA_RESTART
;
219 sigchld_action
.sa_flags
= 0;
220 #endif /* !SA_RESTART */
222 if (sigaction (SIGCHLD
, &sigchld_action
, NULL
) == -1)
224 #ifdef ENABLE_SUBSHELL
226 * This may happen on QNX Neutrino 6, where SA_RESTART
227 * is defined but not implemented. Fallback to no subshell.
229 mc_global
.tty
.use_subshell
= FALSE
;
230 #endif /* ENABLE_SUBSHELL */
234 /* --------------------------------------------------------------------------------------------- */
235 /*** public functions ****************************************************************************/
236 /* --------------------------------------------------------------------------------------------- */
239 main (int argc
, char *argv
[])
241 GError
*error
= NULL
;
242 gboolean config_migrated
= FALSE
;
243 char *config_migrate_msg
;
244 int exit_code
= EXIT_FAILURE
;
246 /* We had LC_CTYPE before, LC_ALL includs LC_TYPE as well */
247 #ifdef HAVE_SETLOCALE
248 (void) setlocale (LC_ALL
, "");
250 (void) bindtextdomain (PACKAGE
, LOCALEDIR
);
251 (void) textdomain (PACKAGE
);
253 /* do this before args parsing */
254 str_init_strings (NULL
);
256 if (!mc_args_parse (&argc
, &argv
, "mc", &error
))
259 fprintf (stderr
, _("Failed to run:\n%s\n"), error
->message
);
260 g_error_free (error
);
261 g_free (mc_global
.tty
.shell
);
263 str_uninit_strings ();
267 /* do this before mc_args_show_info () to view paths in the --datadir-info output */
270 if (!g_path_is_absolute (mc_config_get_home_dir ()))
272 error
= g_error_new (MC_ERROR
, 0, "%s: %s", _("Home directory path is not absolute"),
273 mc_config_get_home_dir ());
274 mc_event_deinit (NULL
);
275 goto startup_exit_falure
;
278 if (!mc_args_show_info ())
280 exit_code
= EXIT_SUCCESS
;
281 goto startup_exit_ok
;
284 if (!events_init (&error
))
285 goto startup_exit_falure
;
287 mc_config_init_config_paths (&error
);
289 config_migrated
= mc_config_migrate_from_old_place (&error
, &config_migrate_msg
);
292 mc_event_deinit (NULL
);
293 goto startup_exit_falure
;
298 vfs_setup_work_dir ();
300 /* do this after vfs initialization due to mc_setctl() call in mc_setup_by_args() */
301 if (!mc_setup_by_args (argc
, argv
, &error
))
304 mc_event_deinit (NULL
);
305 goto startup_exit_falure
;
308 /* check terminal type
309 * $TEMR must be set and not empty
310 * mc_global.tty.xterm_flag is used in init_key() and tty_init()
311 * Do this after mc_args_handle() where mc_args__force_xterm is set up.
313 mc_global
.tty
.xterm_flag
= tty_check_term (mc_args__force_xterm
);
315 /* NOTE: This has to be called before tty_init or whatever routine
316 calls any define_sequence */
319 /* Must be done before installing the SIGCHLD handler [[FIXME]] */
320 handle_console (CONSOLE_INIT
);
322 #ifdef ENABLE_SUBSHELL
323 /* Don't use subshell when invoked as viewer or editor */
324 if (mc_global
.mc_run_mode
!= MC_RUN_FULL
)
325 mc_global
.tty
.use_subshell
= FALSE
;
327 if (mc_global
.tty
.use_subshell
)
328 subshell_get_console_attributes ();
329 #endif /* ENABLE_SUBSHELL */
331 /* Install the SIGCHLD handler; must be done before init_subshell() */
334 /* We need this, since ncurses endwin () doesn't restore the signals */
335 save_stop_handler ();
337 /* Must be done before init_subshell, to set up the terminal size: */
338 /* FIXME: Should be removed and LINES and COLS computed on subshell */
339 tty_init (!mc_args__nomouse
, mc_global
.tty
.xterm_flag
);
343 /* start check mc_global.display_codepage and mc_global.source_codepage */
346 /* Removing this from the X code let's us type C-c */
349 load_keymap_defs (!mc_args__nokeymap
);
351 macros_list
= g_array_new (TRUE
, FALSE
, sizeof (macros_t
));
353 tty_init_colors (mc_global
.tty
.disable_colors
, mc_args__force_colors
);
355 mc_skin_init (&error
);
358 message (D_ERROR
, _("Warning"), "%s", error
->message
);
359 g_error_free (error
);
363 dlg_set_default_colors ();
365 #ifdef ENABLE_SUBSHELL
366 /* Done here to ensure that the subshell doesn't */
367 /* inherit the file descriptors opened below, etc */
368 if (mc_global
.tty
.use_subshell
)
371 #endif /* ENABLE_SUBSHELL */
373 /* Also done after init_subshell, to save any shell init file messages */
374 if (mc_global
.tty
.console_flag
!= '\0')
375 handle_console (CONSOLE_SAVE
);
377 if (mc_global
.tty
.alternate_plus_minus
)
378 application_keypad_mode ();
380 /* subshell_prompt is NULL here */
381 mc_prompt
= (geteuid () == 0) ? "# " : "$ ";
385 message (D_ERROR
, _("Warning"), "%s", config_migrate_msg
);
386 g_free (config_migrate_msg
);
389 /* Program main loop */
390 if (mc_global
.midnight_shutdown
)
391 exit_code
= EXIT_SUCCESS
;
393 exit_code
= do_nc ()? EXIT_SUCCESS
: EXIT_FAILURE
;
395 /* Save the tree store */
396 (void) tree_store_save ();
400 /* Virtual File System shutdown */
403 flush_extension_file (); /* does only free memory */
412 if (mc_global
.tty
.console_flag
!= '\0' && (quit
& SUBSHELL_EXIT
) == 0)
413 handle_console (CONSOLE_RESTORE
);
414 if (mc_global
.tty
.alternate_plus_minus
)
415 numeric_keypad_mode ();
417 (void) signal (SIGCHLD
, SIG_DFL
); /* Disable the SIGCHLD handler */
419 if (mc_global
.tty
.console_flag
!= '\0')
420 handle_console (CONSOLE_DONE
);
422 if (mc_global
.mc_run_mode
== MC_RUN_FULL
&& mc_args__last_wd_file
!= NULL
423 && last_wd_string
!= NULL
&& !print_last_revert
)
427 last_wd_fd
= open (mc_args__last_wd_file
, O_WRONLY
| O_CREAT
| O_TRUNC
| O_EXCL
,
429 if (last_wd_fd
!= -1)
433 ret1
= write (last_wd_fd
, last_wd_string
, strlen (last_wd_string
));
434 ret2
= close (last_wd_fd
);
439 g_free (last_wd_string
);
441 g_free (mc_global
.tty
.shell
);
445 if (macros_list
!= NULL
)
449 for (i
= 0; i
< macros_list
->len
; i
++)
451 macros
= &g_array_index (macros_list
, struct macros_t
, i
);
452 if (macros
!= NULL
&& macros
->macro
!= NULL
)
453 (void) g_array_free (macros
->macro
, FALSE
);
455 (void) g_array_free (macros_list
, TRUE
);
458 str_uninit_strings ();
460 if (mc_global
.mc_run_mode
!= MC_RUN_EDITOR
)
461 g_free (mc_run_param0
);
464 g_list_foreach ((GList
*) mc_run_param0
, (GFunc
) mcedit_arg_free
, NULL
);
465 g_list_free ((GList
*) mc_run_param0
);
467 g_free (mc_run_param1
);
469 mc_config_deinit_config_paths ();
471 (void) mc_event_deinit (&error
);
474 fprintf (stderr
, _("\nFailed while close:\n%s\n"), error
->message
);
475 g_error_free (error
);
476 exit_code
= EXIT_FAILURE
;
479 (void) putchar ('\n'); /* Hack to make shell's prompt start at left of screen */
484 /* --------------------------------------------------------------------------------------------- */