mc/src/main.c

/* Main program for the Midnight Commander
   Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
   2003, 2004, 2005, 2006, 2007, 2009 Free Software Foundation, Inc.

   Written by: 1994, 1995, 1996, 1997 Miguel de Icaza
   1994, 1995 Janne Kukonlehto
   1997 Norbert Warmuth

   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 2 of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

/** \file main.c
 *  \brief Source: this is a main module
 */

#include <config.h>

#include <ctype.h>
#include <errno.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <unistd.h>
#include <pwd.h>                /* for username in xterm title */

#include "lib/global.h"

#include "lib/tty/tty.h"
#include "lib/tty/mouse.h"
#include "lib/tty/key.h"        /* For init_key() */
#include "lib/tty/win.h"        /* xterm_flag */
#include "lib/skin.h"
#include "lib/mcconfig.h"
#include "lib/filehighlight.h"
#include "lib/fileloc.h"        /* MC_USERCONF_DIR */
#include "lib/strutil.h"

#include "lib/vfs/mc-vfs/vfs.h" /* vfs_translate_url() */
#ifdef ENABLE_VFS_SMB
#include "lib/vfs/mc-vfs/smbfs.h"       /* smbfs_set_debug() */
#endif /* ENABLE_VFS_SMB */

#include "lib/util.h"
#include "lib/widget.h"

#include "args.h"
#include "dir.h"
#include "panel.h"
#include "option.h"
#include "tree.h"
#include "treestore.h"
#include "consaver/cons.saver.h"
#include "subshell.h"
#include "setup.h"              /* save_setup() */
#include "boxes.h"              /* sort_box() */
#include "layout.h"
#include "cmd.h"                /* Normal commands */
#include "hotlist.h"
#include "panelize.h"
#include "learn.h"              /* learn_keys() */
#include "listmode.h"
#include "execute.h"
#include "ext.h"                /* For flush_extension_file() */
#include "command.h"
#include "user.h"               /* user_file_menu_cmd() */

#include "chmod.h"
#include "chown.h"
#include "achown.h"

#include "main.h"

#ifdef USE_INTERNAL_EDIT
#include "src/editor/edit.h"
#endif

#ifdef USE_DIFF_VIEW
#include "src/diffviewer/ydiff.h"
#endif

#ifdef HAVE_CHARSET
#include "lib/charsets.h"
#include "selcodepage.h"
#endif /* HAVE_CHARSET */

#include "keybind-defaults.h"   /* type global_keymap_t */

/*** global variables ****************************************************************************/

/* When the modes are active, left_panel, right_panel and tree_panel */
/* Point to a proper data structure.  You should check with the functions */
/* get_current_type and get_other_type the types of the panels before using */
/* This pointer variables */

/* The structures for the panels */
WPanel *left_panel = NULL;
WPanel *right_panel = NULL;

mc_fhl_t *mc_filehighlight;

/* The pointer to the tree */
WTree *the_tree = NULL;

/* The Menubar */
struct WMenuBar *the_menubar = NULL;
static Menu *left_menu, *right_menu;

/* Pointers to the selected and unselected panel */
WPanel *current_panel = NULL;

/* Set if the command is being run from the "Right" menu */
int is_right = 0;

/* Set when main loop should be terminated */
volatile int quit = 0;

/* Set if you want the possible completions dialog for the first time */
int show_all_if_ambiguous = 0;

/* Set when cd symlink following is desirable (bash mode) */
int cd_symlinks = 1;

/* If set then dialogs just clean the screen when refreshing, else */
/* they do a complete refresh, refreshing all the parts of the program */
int fast_refresh = 0;

/* If true, at startup the user-menu is invoked */
int auto_menu = 0;

/* If true, then the +, - and \ keys have their special meaning only if the
 * command line is emtpy, otherwise they behave like regular letters
 */
int only_leading_plus_minus = 1;

int pause_after_run = pause_on_dumb_terminals;

/* It true saves the setup when quitting */
int auto_save_setup = 1;

#ifndef HAVE_CHARSET
/* If true, allow characters in the range 160-255 */
int eight_bit_clean = 1;
/*
 * If true, also allow characters in the range 128-159.
 * This is reported to break on many terminals (xterm, qansi-m).
 */
int full_eight_bits = 0;
#endif /* !HAVE_CHARSET */

/*
 * If utf-8 terminal utf8_display = 1
 * Display bits set UTF-8
 *
 */
int utf8_display = 0;

/* If true use the internal viewer */
int use_internal_view = 1;

/* The prompt */
const char *mc_prompt = NULL;

/* The widget where we draw the prompt */
WLabel *the_prompt;

/* The hint bar */
WLabel *the_hint;

/* The button bar */
WButtonBar *the_bar;

/* Mouse type: GPM, xterm or none */
Mouse_Type use_mouse_p = MOUSE_NONE;

/* If on, default for "No" in delete operations */
int safe_delete = 0;

/* Controls screen clearing before an exec */
int clear_before_exec = 1;

/* Asks for confirmation before deleting a file */
int confirm_delete = 1;

/* Asks for confirmation before deleting a hotlist entry */
int confirm_directory_hotlist_delete = 1;

/* Asks for confirmation before overwriting a file */
int confirm_overwrite = 1;

/* Asks for confirmation before executing a program by pressing enter */
int confirm_execute = 0;

/* Asks for confirmation before leaving the program */
int confirm_exit = 1;

/* Asks for confirmation before clean up of history */
int confirm_history_cleanup = 1;

/* Asks for confirmation when using F3 to view a directory and there
   are tagged files */
int confirm_view_dir = 0;

/* This flag indicates if the pull down menus by default drop down */
int drop_menus = 0;

/* The dialog handle for the main program */
Dlg_head *midnight_dlg = NULL;

/* Subshell: if set, then the prompt was not saved on CONSOLE_SAVE */
/* We need to paint it after CONSOLE_RESTORE, see: load_prompt */
int update_prompt = 0;

/* The home directory */
const char *home_dir = NULL;

/* Only used at program boot */
int boot_current_is_left = 1;

/* If this is true, then when browsing the tree the other window will
 * automatically reload it's directory with the contents of the currently
 * selected directory.
 */
int xtree_mode = 0;

/* path to X clipboard utility */
char *clipboard_store_path = NULL;
char *clipboard_paste_path = NULL;

mc_run_mode_t mc_run_mode = MC_RUN_FULL;
char *mc_run_param0 = NULL;
char *mc_run_param1 = NULL;

/* Used so that widgets know if they are being destroyed or
   shut down */
int midnight_shutdown = 0;

/* The user's shell */
char *shell = NULL;

/* mc_home: The home of MC - /etc/mc or defined by MC_DATADIR */
char *mc_home = NULL;

/* mc_home_alt: Alternative home of MC - deprecated /usr/share/mc */
char *mc_home_alt = NULL;

/*** file scope macro definitions ****************************************************************/

#ifdef HAVE_CHARSET
/*
 * Don't restrict the output on the screen manager level,
 * the translation tables take care of it.
 */
#define full_eight_bits (1)
#define eight_bit_clean (1)
#endif /* !HAVE_CHARSET */

/*** file scope type declarations ****************************************************************/

/*** file scope variables ************************************************************************/

/* If set, then print to the given file the last directory we were at */
static char *last_wd_string = NULL;
/* Set to 1 to suppress printing the last directory */
static int print_last_revert = 0;

static gboolean ctl_x_map_enabled = FALSE;

/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */

/** Stop MC main dialog and the current dialog if it exists.
 * Needed to provide fast exit from MC viewer or editor on shell exit */

static void
stop_dialogs (void)
{
    midnight_dlg->state = DLG_CLOSED;

    if ((top_dlg != NULL) && (top_dlg->data != NULL))
        ((Dlg_head *) top_dlg->data)->state = DLG_CLOSED;
}

/* --------------------------------------------------------------------------------------------- */

static gboolean
quit_cmd_internal (int quiet)
{
    int q = quit;
    size_t n = dialog_switch_num () - 1;

    if (n != 0)
    {
        char msg[BUF_MEDIUM];

        g_snprintf (msg, sizeof (msg),
                    ngettext ("You have %zd opened screen. Quit anyway?",
                              "You have %zd opened screens. Quit anyway?", n), n);

        if (query_dialog (_("The Midnight Commander"), msg, D_NORMAL, 2, _("&Yes"), _("&No")) != 0)
            return FALSE;
        q = 1;
    }
    else if (quiet || !confirm_exit)
        q = 1;
    else if (query_dialog (_("The Midnight Commander"),
                           _("Do you really want to quit the Midnight Commander?"),
                           D_NORMAL, 2, _("&Yes"), _("&No")) == 0)
        q = 1;

    if (q != 0)
    {
#ifdef HAVE_SUBSHELL_SUPPORT
        if (!use_subshell)
            stop_dialogs ();
        else if ((q = exit_subshell ()))
#endif
            stop_dialogs ();
    }

    if (q != 0)
        quit |= 1;
    return (quit != 0);
}

/* --------------------------------------------------------------------------------------------- */

static gboolean
quit_cmd (void)
{
    return quit_cmd_internal (0);
}

/* --------------------------------------------------------------------------------------------- */

static void
treebox_cmd (void)
{
    char *sel_dir;

    sel_dir = tree_box (selection (current_panel)->fname);
    if (sel_dir)
    {
        do_cd (sel_dir, cd_exact);
        g_free (sel_dir);
    }
}

/* --------------------------------------------------------------------------------------------- */

#ifdef LISTMODE_EDITOR
static void
listmode_cmd (void)
{
    char *newmode;

    if (get_current_type () != view_listing)
        return;

    newmode = listmode_edit (current_panel->user_format);
    if (!newmode)
        return;

    g_free (current_panel->user_format);
    current_panel->list_type = list_user;
    current_panel->user_format = newmode;
    set_panel_formats (current_panel);

    do_refresh ();
}
#endif /* LISTMODE_EDITOR */

/* --------------------------------------------------------------------------------------------- */
/* NOTICE: hotkeys specified here are overriden in menubar_paint_idx (alex) */

static GList *
create_panel_menu (void)
{
    GList *entries = NULL;

    entries = g_list_append (entries, menu_entry_create (_("File listin&g"), CK_ListingCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Quick view"), CK_QuickViewCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Info"), CK_InfoCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Tree"), CK_TreeCmd));
    entries = g_list_append (entries, menu_separator_create ());
    entries =
        g_list_append (entries, menu_entry_create (_("&Listing mode..."), CK_ChangeListingCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Sort order..."), CK_Sort));
    entries = g_list_append (entries, menu_entry_create (_("&Filter..."), CK_FilterCmd));
#ifdef HAVE_CHARSET
    entries =
        g_list_append (entries, menu_entry_create (_("&Encoding..."), CK_PanelSetPanelEncoding));
#endif
#ifdef ENABLE_VFS_NET
    entries = g_list_append (entries, menu_separator_create ());
#ifdef ENABLE_VFS_FTP
    entries = g_list_append (entries, menu_entry_create (_("FT&P link..."), CK_FtplinkCmd));
#endif
#ifdef ENABLE_VFS_FISH
    entries = g_list_append (entries, menu_entry_create (_("S&hell link..."), CK_FishlinkCmd));
#endif
#ifdef ENABLE_VFS_SMB
    entries = g_list_append (entries, menu_entry_create (_("SM&B link..."), CK_SmblinkCmd));
#endif
#endif /* ENABLE_VFS_NET */
    entries = g_list_append (entries, menu_separator_create ());
    entries = g_list_append (entries, menu_entry_create (_("&Rescan"), CK_RereadCmd));

    return entries;
}

/* --------------------------------------------------------------------------------------------- */

static GList *
create_file_menu (void)
{
    GList *entries = NULL;

    entries = g_list_append (entries, menu_entry_create (_("&View"), CK_ViewCmd));
    entries = g_list_append (entries, menu_entry_create (_("Vie&w file..."), CK_ViewFileCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Filtered view"), CK_FilteredViewCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Edit"), CK_EditCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Copy"), CK_CopyCmd));
    entries = g_list_append (entries, menu_entry_create (_("C&hmod"), CK_ChmodCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Link"), CK_LinkCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Symlink"), CK_SymlinkCmd));
    entries =
        g_list_append (entries, menu_entry_create (_("Relative symlin&k"), CK_RelativeSymlinkCmd));
    entries = g_list_append (entries, menu_entry_create (_("Edit s&ymlink"), CK_EditSymlinkCmd));
    entries = g_list_append (entries, menu_entry_create (_("Ch&own"), CK_ChownCmd));
    entries =
        g_list_append (entries, menu_entry_create (_("&Advanced chown"), CK_ChownAdvancedCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Rename/Move"), CK_RenameCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Mkdir"), CK_MkdirCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Delete"), CK_DeleteCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Quick cd"), CK_QuickCdCmd));
    entries = g_list_append (entries, menu_separator_create ());
    entries = g_list_append (entries, menu_entry_create (_("Select &group"), CK_SelectCmd));
    entries = g_list_append (entries, menu_entry_create (_("U&nselect group"), CK_UnselectCmd));
    entries =
        g_list_append (entries,
                       menu_entry_create (_("Reverse selec&tion"), CK_ReverseSelectionCmd));
    entries = g_list_append (entries, menu_separator_create ());
    entries = g_list_append (entries, menu_entry_create (_("E&xit"), CK_QuitCmd));

    return entries;
}

/* --------------------------------------------------------------------------------------------- */

static GList *
create_command_menu (void)
{
    /* I know, I'm lazy, but the tree widget when it's not running
     * as a panel still has some problems, I have not yet finished
     * the WTree widget port, sorry.
     */
    GList *entries = NULL;

    entries = g_list_append (entries, menu_entry_create (_("&User menu"), CK_UserMenuCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Directory tree"), CK_TreeBoxCmd));
    entries = g_list_append (entries, menu_entry_create (_("&Find file"), CK_FindCmd));
    entries = g_list_append (entries, menu_entry_create (_("S&wap panels"), CK_SwapCmd));
    entries =
        g_list_append (entries, menu_entry_create (_("Switch &panels on/off"), CK_ShowCommandLine));
    entries =
        g_list_append (entries, menu_entry_create (_("&Compare directories"), CK_CompareDirsCmd));
#ifdef USE_DIFF_VIEW
    entries = g_list_append (entries, menu_entry_create (_("&View diff files"), CK_DiffViewCmd));
#endif
    entries =
        g_list_append (entries, menu_entry_create (_("E&xternal panelize"), CK_ExternalPanelize));
    entries =
        g_list_append (entries,
                       menu_entry_create (_("Show directory s&izes"), CK_SingleDirsizeCmd));
    entries = g_list_append (entries, menu_separator_create ());
    entries = g_list_append (entries, menu_entry_create (_("Command &history"), CK_HistoryCmd));
    entries =
        g_list_append (entries, menu_entry_create (_("Di&rectory hotlist"), CK_QuickChdirCmd));
#ifdef ENABLE_VFS
    entries = g_list_append (entries, menu_entry_create (_("&Active VFS list"), CK_ReselectVfs));
#endif
#ifdef WITH_BACKGROUND
    entries = g_list_append (entries, menu_entry_create (_("&Background jobs"), CK_JobsCmd));
#endif
    entries = g_list_append (entries, menu_entry_create (_("Screen lis&t"), CK_DialogListCmd));
    entries = g_list_append (entries, menu_separator_create ());
#ifdef ENABLE_VFS_UNDELFS
    entries =
        g_list_append (entries,
                       menu_entry_create (_("&Undelete files (ext2fs only)"), CK_UndeleteCmd));
#endif
#ifdef LISTMODE_EDITOR
    entries =
        g_list_append (entries, menu_entry_create (_("&Listing format edit"), CK_ListmodeCmd));
#endif
#if defined (ENABLE_VFS_UNDELFS) || defined (LISTMODE_EDITOR)
    entries = g_list_append (entries, menu_separator_create ());
#endif
    entries =
        g_list_append (entries, menu_entry_create (_("Edit &extension file"), CK_EditExtFileCmd));
    entries = g_list_append (entries, menu_entry_create (_("Edit &menu file"), CK_EditMcMenuCmd));
    entries =
        g_list_append (entries,
                       menu_entry_create (_("Edit hi&ghlighting group file"), CK_EditFhlFileCmd));

    return entries;
}

/* --------------------------------------------------------------------------------------------- */

static GList *
create_options_menu (void)
{
    GList *entries = NULL;

    entries = g_list_append (entries, menu_entry_create (_("&Configuration..."), CK_ConfigureBox));
    entries = g_list_append (entries, menu_entry_create (_("&Layout..."), CK_LayoutBox));
    entries =
        g_list_append (entries, menu_entry_create (_("&Panel options..."), CK_PanelOptionsBox));
    entries = g_list_append (entries, menu_entry_create (_("C&onfirmation..."), CK_ConfirmBox));
    entries = g_list_append (entries, menu_entry_create (_("&Display bits..."), CK_DisplayBitsBox));
    entries = g_list_append (entries, menu_entry_create (_("Learn &keys..."), CK_LearnKeys));
#ifdef ENABLE_VFS
    entries = g_list_append (entries, menu_entry_create (_("&Virtual FS..."), CK_ConfigureVfs));
#endif
    entries = g_list_append (entries, menu_separator_create ());
    entries = g_list_append (entries, menu_entry_create (_("&Save setup"), CK_SaveSetupCmd));

    return entries;
}

/* --------------------------------------------------------------------------------------------- */

static void
init_menu (void)
{
    left_menu = create_menu ("", create_panel_menu (), "[Left and Right Menus]");
    menubar_add_menu (the_menubar, left_menu);
    menubar_add_menu (the_menubar, create_menu (_("&File"), create_file_menu (), "[File Menu]"));
    menubar_add_menu (the_menubar,
                      create_menu (_("&Command"), create_command_menu (), "[Command Menu]"));
    menubar_add_menu (the_menubar,
                      create_menu (_("&Options"), create_options_menu (), "[Options Menu]"));
    right_menu = create_menu ("", create_panel_menu (), "[Left and Right Menus]");
    menubar_add_menu (the_menubar, right_menu);
    update_menu ();
    menubar_set_visible (the_menubar, menubar_visible);
}

/* --------------------------------------------------------------------------------------------- */

static void
menu_last_selected_cmd (void)
{
    the_menubar->is_active = TRUE;
    the_menubar->is_dropped = (drop_menus != 0);
    the_menubar->previous_widget = dlg_get_current_widget_id (midnight_dlg);
    dlg_select_widget (the_menubar);
}

/* --------------------------------------------------------------------------------------------- */

static void
menu_cmd (void)
{
    if (the_menubar->is_active)
        return;

    if ((get_current_index () == 0) == (current_panel->active != 0))
        the_menubar->selected = 0;
    else
        the_menubar->selected = g_list_length (the_menubar->menu) - 1;
    menu_last_selected_cmd ();
}

/* --------------------------------------------------------------------------------------------- */

static char *
midnight_get_shortcut (unsigned long command)
{
    const char *ext_map;
    const char *shortcut = NULL;

    shortcut = keybind_lookup_keymap_shortcut (main_map, command);
    if (shortcut != NULL)
        return g_strdup (shortcut);

    shortcut = keybind_lookup_keymap_shortcut (panel_map, command);
    if (shortcut != NULL)
        return g_strdup (shortcut);

    ext_map = keybind_lookup_keymap_shortcut (main_map, CK_StartExtMap1);
    if (ext_map != NULL)
        shortcut = keybind_lookup_keymap_shortcut (main_x_map, command);
    if (shortcut != NULL)
        return g_strdup_printf ("%s %s", ext_map, shortcut);

    return NULL;
}

/* --------------------------------------------------------------------------------------------- */

static char *
midnight_get_title (const Dlg_head * h, size_t len)
{
    /* TODO: share code with update_xterm_title_path() */

    const char *path;
    char host[BUF_TINY];
    char *p;
    struct passwd *pw = NULL;
    char *login = NULL;
    int res = 0;

    (void) h;

    path = strip_home_and_password (current_panel->cwd);
    res = gethostname (host, sizeof (host));
    if (res != 0)
        host[0] = '\0';
    else
        host[sizeof (host) - 1] = '\0';

    pw = getpwuid (getuid ());
    if (pw != NULL)
        login = g_strdup_printf ("%s@%s", pw->pw_name, host);
    else
        login = g_strdup (host);

    p = g_strdup_printf ("%s [%s]:%s", _("Panels:"), login, path);
    path = str_trunc (p, len - 4);
    g_free (login);
    g_free (p);

    return g_strdup (path);
}

/* --------------------------------------------------------------------------------------------- */

static void
toggle_panels_split (void)
{
    horizontal_split = !horizontal_split;
    layout_change ();
    do_refresh ();
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Just a hack for allowing url-like pathnames to be accepted from the
 * command line.
 */

static void
translated_mc_chdir (char *dir)
{
    char *newdir;
    int ret;

    newdir = vfs_translate_url (dir);
    ret = mc_chdir (newdir);
    g_free (newdir);
}

/* --------------------------------------------------------------------------------------------- */

static void
create_panels (void)
{
    int current_index;
    int other_index;
    panel_view_mode_t current_mode, other_mode;
    char original_dir[BUF_1K] = "\0";

    if (boot_current_is_left)
    {
        current_index = 0;
        other_index = 1;
        current_mode = startup_left_mode;
        other_mode = startup_right_mode;
    }
    else
    {
        current_index = 1;
        other_index = 0;
        current_mode = startup_right_mode;
        other_mode = startup_left_mode;
    }
    /* Creates the left panel */
    if (mc_run_param0 != NULL)
    {
        if (mc_run_param1 != NULL)
        {
            /* Ok, user has specified two dirs, save the original one,
             * since we may not be able to chdir to the proper
             * second directory later
             */
            mc_get_current_wd (original_dir, sizeof (original_dir) - 2);
        }
        translated_mc_chdir (mc_run_param0);
    }
    set_display_type (current_index, current_mode);

    /* The other panel */
    if (mc_run_param1 != NULL)
    {
        if (original_dir[0] != '\0')
            translated_mc_chdir (original_dir);
        translated_mc_chdir (mc_run_param1);
    }
    set_display_type (other_index, other_mode);

    if (startup_left_mode == view_listing)
    {
        current_panel = left_panel;
    }
    else
    {
        if (right_panel)
            current_panel = right_panel;
        else
            current_panel = left_panel;
    }

    /* Create the nice widgets */
    cmdline = command_new (0, 0, 0);
    the_prompt = label_new (0, 0, mc_prompt);
    the_prompt->transparent = 1;
    the_bar = buttonbar_new (keybar_visible);

    the_hint = label_new (0, 0, 0);
    the_hint->transparent = 1;
    the_hint->auto_adjust_cols = 0;
    the_hint->widget.cols = COLS;

    the_menubar = menubar_new (0, 0, COLS, NULL);
}

/* --------------------------------------------------------------------------------------------- */

static void
copy_current_pathname (void)
{
    char *cwd_path;
    if (!command_prompt)
        return;

    cwd_path = remove_encoding_from_path (current_panel->cwd);
    command_insert (cmdline, cwd_path, FALSE);

    if (cwd_path[strlen (cwd_path) - 1] != PATH_SEP)
        command_insert (cmdline, PATH_SEP_STR, FALSE);
    g_free (cwd_path);
}

/* --------------------------------------------------------------------------------------------- */

static void
copy_other_pathname (void)
{
    char *cwd_path;

    if (get_other_type () != view_listing)
        return;

    if (!command_prompt)
        return;

    cwd_path = remove_encoding_from_path (other_panel->cwd);
    command_insert (cmdline, cwd_path, FALSE);

    if (cwd_path[strlen (cwd_path) - 1] != PATH_SEP)
        command_insert (cmdline, PATH_SEP_STR, FALSE);
    g_free (cwd_path);
}

/* --------------------------------------------------------------------------------------------- */

static void
copy_readlink (WPanel * panel)
{
    if (!command_prompt)
        return;
    if (S_ISLNK (selection (panel)->st.st_mode))
    {
        char buffer[MC_MAXPATHLEN];
        char *p = concat_dir_and_file (panel->cwd, selection (panel)->fname);
        int i;

        i = mc_readlink (p, buffer, MC_MAXPATHLEN - 1);
        g_free (p);
        if (i > 0)
        {
            buffer[i] = 0;
            command_insert (cmdline, buffer, TRUE);
        }
    }
}

/* --------------------------------------------------------------------------------------------- */

static void
copy_current_readlink (void)
{
    copy_readlink (current_panel);
}

/* --------------------------------------------------------------------------------------------- */

static void
copy_other_readlink (void)
{
    if (get_other_type () == view_listing)
        copy_readlink (other_panel);
}

/* --------------------------------------------------------------------------------------------- */
/** Insert the selected file name into the input line */

static void
copy_prog_name (void)
{
    char *tmp;
    if (!command_prompt)
        return;

    if (get_current_type () == view_tree)
    {
        WTree *tree = (WTree *) get_panel_widget (get_current_index ());
        tmp = tree_selected_name (tree);
    }
    else
        tmp = selection (current_panel)->fname;

    command_insert (cmdline, tmp, TRUE);
}

/* --------------------------------------------------------------------------------------------- */

static void
copy_tagged (WPanel * panel)
{
    int i;

    if (!command_prompt)
        return;
    input_disable_update (cmdline);
    if (panel->marked)
    {
        for (i = 0; i < panel->count; i++)
        {
            if (panel->dir.list[i].f.marked)
                command_insert (cmdline, panel->dir.list[i].fname, TRUE);
        }
    }
    else
    {
        command_insert (cmdline, panel->dir.list[panel->selected].fname, TRUE);
    }
    input_enable_update (cmdline);
}

/* --------------------------------------------------------------------------------------------- */

static void
copy_current_tagged (void)
{
    copy_tagged (current_panel);
}

/* --------------------------------------------------------------------------------------------- */

static void
copy_other_tagged (void)
{
    if (get_other_type () == view_listing)
        copy_tagged (other_panel);
}

/* --------------------------------------------------------------------------------------------- */

static void
ctl_x_cmd (void)
{
    ctl_x_map_enabled = TRUE;
}

/* --------------------------------------------------------------------------------------------- */

static cb_ret_t
midnight_execute_cmd (Widget * sender, unsigned long command)
{
    cb_ret_t res = MSG_HANDLED;

    (void) sender;

    /* stop quick search before executing any command */
    send_message ((Widget *) current_panel, WIDGET_COMMAND, CK_PanelStopSearch);

    switch (command)
    {
    case CK_AddHotlist:
        add2hotlist_cmd ();
        break;
    case CK_ChangeListingCmd:
        change_listing_cmd ();
        break;
    case CK_ChmodCmd:
        chmod_cmd ();
        break;
    case CK_ChownCmd:
        chown_cmd ();
        break;
    case CK_ChownAdvancedCmd:
        chown_advanced_cmd ();
        break;
    case CK_CompareDirsCmd:
        compare_dirs_cmd ();
        break;
    case CK_ConfigureBox:
        configure_box ();
        break;
#ifdef ENABLE_VFS
    case CK_ConfigureVfs:
        configure_vfs ();
        break;
#endif
    case CK_ConfirmBox:
        confirm_box ();
        break;
    case CK_CopyCmd:
        copy_cmd ();
        break;
    case CK_CopyCurrentPathname:
        copy_current_pathname ();
        break;
    case CK_CopyCurrentReadlink:
        copy_current_readlink ();
        break;
    case CK_CopyCurrentTagged:
        copy_current_tagged ();
        break;
    case CK_CopyOtherPathname:
        copy_other_pathname ();
        break;
    case CK_CopyOtherReadlink:
        copy_other_readlink ();
        break;
    case CK_CopyOtherTagged:
        copy_other_tagged ();
        break;
    case CK_DeleteCmd:
        delete_cmd ();
        break;
    case CK_DialogListCmd:
        dialog_switch_list ();
        break;
#ifdef USE_DIFF_VIEW
    case CK_DiffViewCmd:
        diff_view_cmd ();
        break;
#endif
    case CK_DisplayBitsBox:
        display_bits_box ();
        break;
    case CK_EditCmd:
        edit_cmd ();
        break;
#ifdef USE_INTERNAL_EDIT
    case CK_EditForceInternalCmd:
        edit_cmd_force_internal ();
        break;
#endif
    case CK_EditExtFileCmd:
        ext_cmd ();
        break;
    case CK_EditFhlFileCmd:
        edit_fhl_cmd ();
        break;
    case CK_EditMcMenuCmd:
        edit_mc_menu_cmd ();
        break;
    case CK_EditSymlinkCmd:
        edit_symlink_cmd ();
        break;
    case CK_ExternalPanelize:
        external_panelize ();
        break;
    case CK_FilterCmd:
        filter_cmd ();
        break;
    case CK_FilteredViewCmd:
        filtered_view_cmd ();
        break;
    case CK_FindCmd:
        find_cmd ();
        break;
#ifdef ENABLE_VFS_FISH
    case CK_FishlinkCmd:
        fishlink_cmd ();
        break;
#endif
#ifdef ENABLE_VFS_FTP
    case CK_FtplinkCmd:
        ftplink_cmd ();
        break;
#endif
    case CK_HelpCmd:
        help_cmd ();
        break;
    case CK_HistoryCmd:
        history_cmd ();
        break;
    case CK_InfoCmd:
        if (sender == (Widget *) the_menubar)
            info_cmd ();        /* mwnu */
        else
            info_cmd_no_menu ();        /* shortcut or buttonbar */
        break;
#ifdef WITH_BACKGROUND
    case CK_JobsCmd:
        jobs_cmd ();
        break;
#endif
    case CK_LayoutBox:
        layout_box ();
        break;
    case CK_LearnKeys:
        learn_keys ();
        break;
    case CK_LinkCmd:
        link_cmd (LINK_HARDLINK);
        break;
    case CK_ListingCmd:
        listing_cmd ();
        break;
#ifdef LISTMODE_EDITOR
    case CK_ListmodeCmd:
        listmode_cmd ();
        break;
#endif
    case CK_MenuCmd:
        menu_cmd ();
        break;
    case CK_MenuLastSelectedCmd:
        menu_last_selected_cmd ();
        break;
    case CK_MkdirCmd:
        mkdir_cmd ();
        break;
    case CK_PanelOptionsBox:
        panel_options_box ();
        break;
#ifdef HAVE_CHARSET
    case CK_PanelSetPanelEncoding:
        encoding_cmd ();
        break;
#endif
    case CK_QuickCdCmd:
        quick_cd_cmd ();
        break;
    case CK_QuickChdirCmd:
        quick_chdir_cmd ();
        break;
    case CK_QuickViewCmd:
        if (sender == (Widget *) the_menubar)
            quick_view_cmd ();  /* menu */
        else
            quick_cmd_no_menu ();       /* shortcut or buttonabr */
        break;
    case CK_QuietQuitCmd:
        quiet_quit_cmd ();
        break;
    case CK_QuitCmd:
        quit_cmd ();
        break;
    case CK_RelativeSymlinkCmd:
        link_cmd (LINK_SYMLINK_RELATIVE);
        break;
    case CK_RenameCmd:
        rename_cmd ();
        break;
    case CK_RereadCmd:
        reread_cmd ();
        break;
#ifdef ENABLE_VFS
    case CK_ReselectVfs:
        reselect_vfs ();
        break;
#endif
    case CK_ReverseSelectionCmd:
        reverse_selection_cmd ();
        break;
    case CK_SaveSetupCmd:
        save_setup_cmd ();
        break;
    case CK_SelectCmd:
        select_cmd ();
        break;
    case CK_ShowCommandLine:
        view_other_cmd ();
        break;
    case CK_SingleDirsizeCmd:
        smart_dirsize_cmd ();
        break;
#ifdef ENABLE_VFS_SMB
    case CK_SmblinkCmd:
        smblink_cmd ();
        break;
#endif /* ENABLE_VFS_SMB */
    case CK_Sort:
        sort_cmd ();
        break;
    case CK_StartExtMap1:
        ctl_x_cmd ();
        break;
    case CK_SuspendCmd:
        suspend_cmd ();
        break;
    case CK_SwapCmd:
        swap_cmd ();
        break;
    case CK_SymlinkCmd:
        link_cmd (LINK_SYMLINK_ABSOLUTE);
        break;
    case CK_ToggleListingCmd:
        toggle_listing_cmd ();
        break;
    case CK_ToggleShowHidden:
        toggle_show_hidden ();
        break;
    case CK_TogglePanelsSplit:
        toggle_panels_split ();
        break;
    case CK_TreeCmd:
        tree_cmd ();
        break;
    case CK_TreeBoxCmd:
        treebox_cmd ();
        break;
#ifdef ENABLE_VFS_UNDELFS
    case CK_UndeleteCmd:
        undelete_cmd ();
        break;
#endif
    case CK_UnselectCmd:
        unselect_cmd ();
        break;
    case CK_UserMenuCmd:
        user_file_menu_cmd ();
        break;
    case CK_ViewCmd:
        view_cmd ();
        break;
    case CK_ViewFileCmd:
        view_file_cmd ();
        break;
    default:
        res = MSG_NOT_HANDLED;
    }

    return res;
}

/* --------------------------------------------------------------------------------------------- */

static void
init_xterm_support (void)
{
    const char *termvalue;

    termvalue = getenv ("TERM");
    if (!termvalue || !(*termvalue))
    {
        fputs (_("The TERM environment variable is unset!\n"), stderr);
        exit (EXIT_FAILURE);
    }

    /* Check mouse capabilities */
    xmouse_seq = tty_tgetstr ("Km");

    if (strcmp (termvalue, "cygwin") == 0)
    {
        mc_args__force_xterm = 1;
        use_mouse_p = MOUSE_DISABLED;
    }

    if (mc_args__force_xterm || strncmp (termvalue, "xterm", 5) == 0
        || strncmp (termvalue, "konsole", 7) == 0
        || strncmp (termvalue, "rxvt", 4) == 0
        || strcmp (termvalue, "Eterm") == 0 || strcmp (termvalue, "dtterm") == 0)
    {
        xterm_flag = 1;

        /* Default to the standard xterm sequence */
        if (!xmouse_seq)
        {
            xmouse_seq = ESC_STR "[M";
        }

        /* Enable mouse unless explicitly disabled by --nomouse */
        if (use_mouse_p != MOUSE_DISABLED)
        {
            const char *color_term = getenv ("COLORTERM");
            if (strncmp (termvalue, "rxvt", 4) == 0 ||
                (color_term != NULL && strncmp (color_term, "rxvt", 4) == 0) ||
                strcmp (termvalue, "Eterm") == 0)
            {
                use_mouse_p = MOUSE_XTERM_NORMAL_TRACKING;
            }
            else
            {
                use_mouse_p = MOUSE_XTERM_BUTTON_EVENT_TRACKING;
            }
        }
    }
}

/* --------------------------------------------------------------------------------------------- */

static void
setup_mc (void)
{
#ifdef HAVE_SLANG
    tty_display_8bit (full_eight_bits != 0);
#else
    tty_display_8bit (eight_bit_clean != 0);
#endif

#ifdef HAVE_SUBSHELL_SUPPORT
    if (use_subshell)
        add_select_channel (subshell_pty, load_prompt, 0);
#endif /* !HAVE_SUBSHELL_SUPPORT */

    tty_setup_sigwinch (sigwinch_handler);

    if ((tty_baudrate () < 9600) || tty_is_slow ())
        verbose = 0;

    init_xterm_support ();
    init_mouse ();
}

/* --------------------------------------------------------------------------------------------- */

static void
setup_dummy_mc (void)
{
    char d[MC_MAXPATHLEN];
    int ret;

    mc_get_current_wd (d, MC_MAXPATHLEN);
    setup_mc ();
    ret = mc_chdir (d);
}

/* --------------------------------------------------------------------------------------------- */

static void
check_codeset ()
{
    const char *current_system_codepage = NULL;

    current_system_codepage = str_detect_termencoding ();

#ifdef HAVE_CHARSET
    {
        const char *_display_codepage;

        _display_codepage = get_codepage_id (display_codepage);

        if (!strcmp (_display_codepage, current_system_codepage))
        {
            utf8_display = str_isutf8 (current_system_codepage);
            return;
        }

        display_codepage = get_codepage_index (current_system_codepage);
        if (display_codepage == -1)
        {
            display_codepage = 0;
        }

        mc_config_set_string (mc_main_config, "Misc", "display_codepage", cp_display);
    }
#endif
    utf8_display = str_isutf8 (current_system_codepage);
}

/* --------------------------------------------------------------------------------------------- */

static void
done_screen (void)
{
    if (!(quit & SUBSHELL_EXIT))
        clr_scr ();
    tty_reset_shell_mode ();
    tty_noraw_mode ();
    tty_keypad (FALSE);
    tty_colors_done ();
}

/* --------------------------------------------------------------------------------------------- */

static void
done_mc (void)
{
    disable_mouse ();

    /* Setup shutdown
     *
     * We sync the profiles since the hotlist may have changed, while
     * we only change the setup data if we have the auto save feature set
     */

    if (auto_save_setup)
        save_setup ();          /* does also call save_hotlist */
    else
    {
        save_hotlist ();
        save_panel_types ();
    }
    done_screen ();

    vfs_stamp_path (vfs_get_current_dir ());

    if ((current_panel != NULL) && (get_current_type () == view_listing))
        vfs_stamp_path (current_panel->cwd);

    if ((other_panel != NULL) && (get_other_type () == view_listing))
        vfs_stamp_path (other_panel->cwd);
}

/* --------------------------------------------------------------------------------------------- */

static cb_ret_t
midnight_callback (Dlg_head * h, Widget * sender, dlg_msg_t msg, int parm, void *data)
{
    unsigned long command;

    switch (msg)
    {
    case DLG_INIT:
        setup_panels ();
        return MSG_HANDLED;

    case DLG_DRAW:
        load_hint (1);
        /* We handle the special case of the output lines */
        if (console_flag && output_lines)
            show_console_contents (output_start_y,
                                   LINES - output_lines - keybar_visible -
                                   1, LINES - keybar_visible - 1);
        return MSG_HANDLED;

    case DLG_RESIZE:
        setup_panels ();
        menubar_arrange (the_menubar);
        return MSG_HANDLED;

    case DLG_IDLE:
        /* We only need the first idle event to show user menu after start */
        set_idle_proc (h, 0);

        if (boot_current_is_left)
            dlg_select_widget (get_panel_widget (0));
        else
            dlg_select_widget (get_panel_widget (1));

        if (auto_menu)
            midnight_execute_cmd (NULL, CK_UserMenuCmd);
        return MSG_HANDLED;

    case DLG_KEY:
        if (ctl_x_map_enabled)
        {
            ctl_x_map_enabled = FALSE;
            command = keybind_lookup_keymap_command (main_x_map, parm);
            if (command != CK_Ignore_Key)
                return midnight_execute_cmd (NULL, command);
        }

        /* FIXME: should handle all menu shortcuts before this point */
        if (the_menubar->is_active)
            return MSG_NOT_HANDLED;

        if (parm == '\t')
            input_free_completions (cmdline);

        if (parm == '\n')
        {
            size_t i;

            for (i = 0; cmdline->buffer[i] != '\0' &&
                        (cmdline->buffer[i] == ' ' || cmdline->buffer[i] == '\t'); i++)
                ;

            if (cmdline->buffer[i] != '\0')
            {
                send_message ((Widget *) cmdline, WIDGET_KEY, parm);
                return MSG_HANDLED;
            }

            input_insert (cmdline, "", FALSE);
            cmdline->point = 0;
        }

        /* Ctrl-Enter and Alt-Enter */
        if (((parm & ~(KEY_M_CTRL | KEY_M_ALT)) == '\n') && (parm & (KEY_M_CTRL | KEY_M_ALT)))
        {
            copy_prog_name ();
            return MSG_HANDLED;
        }

        /* Ctrl-Shift-Enter */
        if (parm == (KEY_M_CTRL | KEY_M_SHIFT | '\n'))
        {
            copy_current_pathname ();
            copy_prog_name ();
            return MSG_HANDLED;
        }

        if ((!alternate_plus_minus || !(console_flag || xterm_flag))
            && !quote && !current_panel->searching)
        {
            if (!only_leading_plus_minus)
            {
                /* Special treatement, since the input line will eat them */
                if (parm == '+')
                {
                    select_cmd ();
                    return MSG_HANDLED;
                }

                if (parm == '\\' || parm == '-')
                {
                    unselect_cmd ();
                    return MSG_HANDLED;
                }

                if (parm == '*')
                {
                    reverse_selection_cmd ();
                    return MSG_HANDLED;
                }
            }
            else if (!command_prompt || !cmdline->buffer[0])
            {
                /* Special treatement '+', '-', '\', '*' only when this is
                 * first char on input line
                 */

                if (parm == '+')
                {
                    select_cmd ();
                    return MSG_HANDLED;
                }

                if (parm == '\\' || parm == '-')
                {
                    unselect_cmd ();
                    return MSG_HANDLED;
                }

                if (parm == '*')
                {
                    reverse_selection_cmd ();
                    return MSG_HANDLED;
                }
            }
        }
        return MSG_NOT_HANDLED;

    case DLG_HOTKEY_HANDLED:
        if ((get_current_type () == view_listing) && current_panel->searching)
        {
            current_panel->dirty = 1;   /* FIXME: unneeded? */
            send_message ((Widget *) current_panel, WIDGET_COMMAND, CK_PanelStopSearch);
        }
        return MSG_HANDLED;

    case DLG_UNHANDLED_KEY:
        if (command_prompt)
        {
            cb_ret_t v;

            v = send_message ((Widget *) cmdline, WIDGET_KEY, parm);
            if (v == MSG_HANDLED)
                return MSG_HANDLED;
        }

        if (ctl_x_map_enabled)
        {
            ctl_x_map_enabled = FALSE;
            command = keybind_lookup_keymap_command (main_x_map, parm);
        }
        else
            command = keybind_lookup_keymap_command (main_map, parm);

        return (command == CK_Ignore_Key) ? MSG_NOT_HANDLED : midnight_execute_cmd (NULL, command);

    case DLG_POST_KEY:
        if (!the_menubar->is_active)
            update_dirty_panels ();
        return MSG_HANDLED;

    case DLG_ACTION:
        /* shortcut */
        if (sender == NULL)
            midnight_execute_cmd (NULL, parm);
        /* message from menu */
        else if (sender == (Widget *) the_menubar)
            midnight_execute_cmd (sender, parm);
        /* message from buttonbar */
        else if (sender == (Widget *) the_bar)
        {
            if (data == NULL)
                midnight_execute_cmd (sender, parm);
            else
                send_message ((Widget *) data, WIDGET_COMMAND, parm);
        }
        return MSG_HANDLED;

    default:
        return default_dlg_callback (h, sender, msg, parm, data);
    }
}

/* --------------------------------------------------------------------------------------------- */

static void
create_panels_and_run_mc (void)
{
    midnight_dlg->get_shortcut = midnight_get_shortcut;
    midnight_dlg->get_title = midnight_get_title;

    create_panels ();

    add_widget (midnight_dlg, the_menubar);
    init_menu ();

    add_widget (midnight_dlg, get_panel_widget (0));
    add_widget (midnight_dlg, get_panel_widget (1));

    add_widget (midnight_dlg, the_hint);
    add_widget (midnight_dlg, cmdline);
    add_widget (midnight_dlg, the_prompt);

    add_widget (midnight_dlg, the_bar);
    midnight_set_buttonbar (the_bar);

    /* Run the Midnight Commander if no file was specified in the command line */
    run_dlg (midnight_dlg);
}

/* --------------------------------------------------------------------------------------------- */
/** result must be free'd (I think this should go in util.c) */

static char *
prepend_cwd_on_local (const char *filename)
{
    char *d;
    size_t l;

    if (!vfs_file_is_local (filename) || g_path_is_absolute (filename))
        return g_strdup (filename);

    d = g_malloc (MC_MAXPATHLEN + strlen (filename) + 2);
    mc_get_current_wd (d, MC_MAXPATHLEN);
    l = strlen (d);
    d[l++] = PATH_SEP;
    strcpy (d + l, filename);
    canonicalize_pathname (d);
    return d;
}

/* --------------------------------------------------------------------------------------------- */
/** Invoke the internal view/edit routine with:
 * the default processing and forcing the internal viewer/editor
 */

static void
mc_maybe_editor_or_viewer (void)
{
    switch (mc_run_mode)
    {
#ifdef USE_INTERNAL_EDIT
    case MC_RUN_EDITOR:
        edit_file (mc_run_param0, mc_args__edit_start_line);
        break;
#endif /* USE_INTERNAL_EDIT */
    case MC_RUN_VIEWER:
        {
            char *path;
            path = prepend_cwd_on_local (mc_run_param0);
            view_file (path, 0, 1);
            g_free (path);
            break;
        }
#ifdef USE_DIFF_VIEW
    case MC_RUN_DIFFVIEWER:
        diff_view (mc_run_param0, mc_run_param1, mc_run_param0, mc_run_param1);
        break;
#endif /* USE_DIFF_VIEW */
    default:
        break;
    }
    midnight_shutdown = 1;
}

/* --------------------------------------------------------------------------------------------- */
/** Run the main dialog that occupies the whole screen */

static void
do_nc (void)
{
    dlg_colors_t midnight_colors;
    midnight_colors[DLG_COLOR_NORMAL] = mc_skin_color_get ("dialog", "_default_");
    midnight_colors[DLG_COLOR_FOCUS] = mc_skin_color_get ("dialog", "focus");
    midnight_colors[DLG_COLOR_HOT_NORMAL] = mc_skin_color_get ("dialog", "hotnormal");
    midnight_colors[DLG_COLOR_HOT_FOCUS] = mc_skin_color_get ("dialog", "hotfocus");
    midnight_colors[DLG_COLOR_TITLE] = mc_skin_color_get ("dialog", "title");

    panel_init ();

    midnight_dlg = create_dlg (FALSE, 0, 0, LINES, COLS, midnight_colors, midnight_callback,
                               "[main]", NULL, DLG_WANT_IDLE);

    if (mc_run_mode == MC_RUN_FULL)
        setup_mc ();
    else
        setup_dummy_mc ();

    /* start check display_codepage and source_codepage */
    check_codeset ();

    /* Check if we were invoked as an editor or file viewer */
    if (mc_run_mode != MC_RUN_FULL)
        mc_maybe_editor_or_viewer ();
    else
    {
        create_panels_and_run_mc ();

        /* Program end */
        midnight_shutdown = 1;

        /* destroy_dlg destroys even current_panel->cwd, so we have to save a copy :) */
        if (mc_args__last_wd_file && vfs_current_is_local ())
            last_wd_string = g_strdup (current_panel->cwd);

    }

    dialog_switch_shutdown ();
    done_mc ();
    destroy_dlg (midnight_dlg);
    panel_deinit ();
    current_panel = 0;
    done_setup ();
}

/* --------------------------------------------------------------------------------------------- */
/** POSIX version.  The only version we support.  */

static void
OS_Setup (void)
{
    const char *shell_env = getenv ("SHELL");
    const char *mc_libdir;

    if ((shell_env == NULL) || (shell_env[0] == '\0'))
    {
        struct passwd *pwd;
        pwd = getpwuid (geteuid ());
        if (pwd != NULL)
            shell = g_strdup (pwd->pw_shell);
    }
    else
        shell = g_strdup (shell_env);

    if ((shell == NULL) || (shell[0] == '\0'))
    {
        g_free (shell);
        shell = g_strdup ("/bin/sh");
    }

    /* This is the directory, where MC was installed, on Unix this is DATADIR */
    /* and can be overriden by the MC_DATADIR environment variable */
    mc_libdir = getenv ("MC_DATADIR");
    if (mc_libdir != NULL)
    {
        mc_home = g_strdup (mc_libdir);
        mc_home_alt = g_strdup (SYSCONFDIR);
    }
    else
    {
        mc_home = g_strdup (SYSCONFDIR);
        mc_home_alt = g_strdup (DATADIR);
    }

    /* This variable is used by the subshell */
    home_dir = getenv ("HOME");

    if (!home_dir)
        home_dir = mc_home;
}

/* --------------------------------------------------------------------------------------------- */

static void
sigchld_handler_no_subshell (int sig)
{
#ifdef __linux__
    int pid, status;

    if (!console_flag)
        return;

    /* COMMENT: if it were true that after the call to handle_console(..INIT)
       the value of console_flag never changed, we could simply not install
       this handler at all if (!console_flag && !use_subshell). */

    /* That comment is no longer true.  We need to wait() on a sigchld
       handler (that's at least what the tarfs code expects currently). */

    pid = waitpid (cons_saver_pid, &status, WUNTRACED | WNOHANG);

    if (pid == cons_saver_pid)
    {

        if (WIFSTOPPED (status))
        {
            /* Someone has stopped cons.saver - restart it */
            kill (pid, SIGCONT);
        }
        else
        {
            /* cons.saver has died - disable console saving */
            handle_console (CONSOLE_DONE);
            console_flag = 0;
        }
    }
    /* If we got here, some other child exited; ignore it */
#endif /* __linux__ */

    (void) sig;
}

/* --------------------------------------------------------------------------------------------- */

static void
init_sigchld (void)
{
    struct sigaction sigchld_action;

    sigchld_action.sa_handler =
#ifdef HAVE_SUBSHELL_SUPPORT
        use_subshell ? sigchld_handler :
#endif /* HAVE_SUBSHELL_SUPPORT */
        sigchld_handler_no_subshell;

    sigemptyset (&sigchld_action.sa_mask);

#ifdef SA_RESTART
    sigchld_action.sa_flags = SA_RESTART;
#else
    sigchld_action.sa_flags = 0;
#endif /* !SA_RESTART */

    if (sigaction (SIGCHLD, &sigchld_action, NULL) == -1)
    {
#ifdef HAVE_SUBSHELL_SUPPORT
        /*
         * This may happen on QNX Neutrino 6, where SA_RESTART
         * is defined but not implemented.  Fallback to no subshell.
         */
        use_subshell = 0;
#endif /* HAVE_SUBSHELL_SUPPORT */
    }
}

/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */

/** Define this function for glib-style error handling */
GQuark
mc_main_error_quark (void)
{
    return g_quark_from_static_string (PACKAGE);
}

/* --------------------------------------------------------------------------------------------- */
/** Save current stat of directories to avoid reloading the panels
 * when no modifications have taken place
 */

void
save_cwds_stat (void)
{
    if (panels_options.fast_reload)
    {
        mc_stat (current_panel->cwd, &(current_panel->dir_stat));
        if (get_other_type () == view_listing)
            mc_stat (other_panel->cwd, &(other_panel->dir_stat));
    }
}

/* --------------------------------------------------------------------------------------------- */

#ifdef HAVE_SUBSHELL_SUPPORT
void
do_update_prompt (void)
{
    if (update_prompt)
    {
        printf ("\r\n%s", subshell_prompt);
        fflush (stdout);
        update_prompt = 0;
    }
}
#endif /* HAVE_SUBSHELL_SUPPORT */

/* --------------------------------------------------------------------------------------------- */

void
change_panel (void)
{
    input_free_completions (cmdline);
    dlg_one_down (midnight_dlg);
}

/* --------------------------------------------------------------------------------------------- */

void
update_menu (void)
{
    menu_set_name (left_menu,  horizontal_split ? _("&Above") : _("&Left"));
    menu_set_name (right_menu, horizontal_split ? _("&Below") : _("&Right"));
    menubar_arrange (the_menubar);
}

/* --------------------------------------------------------------------------------------------- */

gboolean
quiet_quit_cmd (void)
{
    print_last_revert = 1;
    return quit_cmd_internal (1);
}

/* --------------------------------------------------------------------------------------------- */
/** Wrapper for do_subshell_chdir, check for availability of subshell */

void
subshell_chdir (const char *directory)
{
#ifdef HAVE_SUBSHELL_SUPPORT
    if (use_subshell)
    {
        if (vfs_current_is_local ())
            do_subshell_chdir (directory, 0, 1);
    }
#endif /* HAVE_SUBSHELL_SUPPORT */
}

/* --------------------------------------------------------------------------------------------- */

int
do_cd (const char *new_dir, enum cd_enum exact)
{
    gboolean res;

    res = do_panel_cd (current_panel, new_dir, exact);

#if HAVE_CHARSET
    if (res)
    {
        const char *enc_name;

        enc_name = vfs_get_encoding (current_panel->cwd);
        if (enc_name != NULL)
            current_panel->codepage = get_codepage_index (enc_name);
        else
            current_panel->codepage = SELECT_CHARSET_NO_TRANSLATE;
    }
#endif /* HAVE_CHARSET */

    return res ? 1 : 0;
}

/* --------------------------------------------------------------------------------------------- */

#ifdef HAVE_SUBSHELL_SUPPORT
int
load_prompt (int fd, void *unused)
{
    (void) fd;
    (void) unused;

    if (!read_subshell_prompt ())
        return 0;

    /* Don't actually change the prompt if it's invisible */
    if (((Dlg_head *) top_dlg->data == midnight_dlg) && command_prompt)
    {
        char *tmp_prompt;
        int prompt_len;

        tmp_prompt = strip_ctrl_codes (subshell_prompt);
        prompt_len = str_term_width1 (tmp_prompt);

        /* Check for prompts too big */
        if (COLS > 8 && prompt_len > COLS - 8)
        {
            prompt_len = COLS - 8;
            tmp_prompt[prompt_len] = '\0';
        }
        mc_prompt = tmp_prompt;
        label_set_text (the_prompt, mc_prompt);
        input_set_origin ((WInput *) cmdline, prompt_len, COLS - prompt_len);

        /* since the prompt has changed, and we are called from one of the
         * tty_get_event channels, the prompt updating does not take place
         * automatically: force a cursor update and a screen refresh
         */
        update_cursor (midnight_dlg);
        mc_refresh ();
    }
    update_prompt = 1;
    return 0;
}
#endif /* HAVE_SUBSHELL_SUPPORT */

/* --------------------------------------------------------------------------------------------- */

void
sort_cmd (void)
{
    WPanel *p;
    const panel_field_t *sort_order;

    if (!SELECTED_IS_PANEL)
        return;

    p = MENU_PANEL;
    sort_order = sort_box (p->current_sort_field, &p->reverse, &p->case_sensitive, &p->exec_first);

    panel_set_sort_order (p, sort_order);

}

/* --------------------------------------------------------------------------------------------- */

void
toggle_show_hidden (void)
{
    panels_options.show_dot_files = !panels_options.show_dot_files;
    update_panels (UP_RELOAD, UP_KEEPSEL);
}

/* --------------------------------------------------------------------------------------------- */

void
midnight_set_buttonbar (WButtonBar * b)
{
    buttonbar_set_label (b, 1, Q_ ("ButtonBar|Help"), main_map, NULL);
    buttonbar_set_label (b, 2, Q_ ("ButtonBar|Menu"), main_map, NULL);
    buttonbar_set_label (b, 3, Q_ ("ButtonBar|View"), main_map, NULL);
    buttonbar_set_label (b, 4, Q_ ("ButtonBar|Edit"), main_map, NULL);
    buttonbar_set_label (b, 5, Q_ ("ButtonBar|Copy"), main_map, NULL);
    buttonbar_set_label (b, 6, Q_ ("ButtonBar|RenMov"), main_map, NULL);
    buttonbar_set_label (b, 7, Q_ ("ButtonBar|Mkdir"), main_map, NULL);
    buttonbar_set_label (b, 8, Q_ ("ButtonBar|Delete"), main_map, NULL);
    buttonbar_set_label (b, 9, Q_ ("ButtonBar|PullDn"), main_map, NULL);
    buttonbar_set_label (b, 10, Q_ ("ButtonBar|Quit"), main_map, NULL);
}

/* --------------------------------------------------------------------------------------------- */
/** Show current directory in the xterm title */

void
update_xterm_title_path (void)
{
    /* TODO: share code with midnight_get_title () */

    const char *path;
    char host[BUF_TINY];
    char *p;
    struct passwd *pw = NULL;
    char *login = NULL;
    int res = 0;

    if (xterm_flag && xterm_title)
    {
        path = strip_home_and_password (current_panel->cwd);
        res = gethostname (host, sizeof (host));
        if (res)
        {                       /* On success, res = 0 */
            host[0] = '\0';
        }
        else
        {
            host[sizeof (host) - 1] = '\0';
        }
        pw = getpwuid (getuid ());
        if (pw)
        {
            login = g_strdup_printf ("%s@%s", pw->pw_name, host);
        }
        else
        {
            login = g_strdup (host);
        }
        p = g_strdup_printf ("mc [%s]:%s", login, path);
        fprintf (stdout, "\33]0;%s\7", str_term_form (p));
        g_free (login);
        g_free (p);
        if (!alternate_plus_minus)
            numeric_keypad_mode ();
        fflush (stdout);
    }
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Load new hint and display it.
 * IF force is not 0, ignore the timeout.
 */

void
load_hint (int force)
{
    char *hint;

    if (!the_hint->widget.owner)
        return;

    if (!message_visible)
    {
        label_set_text (the_hint, NULL);
        return;
    }

    hint = get_random_hint (force);

    if (hint != NULL)
    {
        if (*hint)
            set_hintbar (hint);
        g_free (hint);
    }
    else
    {
        char text[BUF_SMALL];

        g_snprintf (text, sizeof (text), _("GNU Midnight Commander %s\n"), VERSION);
        set_hintbar (text);
    }
}

/* --------------------------------------------------------------------------------------------- */

int
main (int argc, char *argv[])
{
    struct stat s;
    char *mc_dir;
    GError *error = NULL;
    gboolean isInitialized;

    /* We had LC_CTYPE before, LC_ALL includs LC_TYPE as well */
    setlocale (LC_ALL, "");
    bindtextdomain ("mc", LOCALEDIR);
    textdomain ("mc");

    /* Set up temporary directory */
    mc_tmpdir ();

    OS_Setup ();

    str_init_strings (NULL);

    vfs_init ();

#ifdef USE_INTERNAL_EDIT
    edit_stack_init ();
#endif

    if (!mc_args_handle (argc, argv, "mc"))
        exit (EXIT_FAILURE);

    /* NOTE: This has to be called before tty_init or whatever routine
       calls any define_sequence */
    init_key ();

    /* Must be done before installing the SIGCHLD handler [[FIXME]] */
    handle_console (CONSOLE_INIT);

#ifdef HAVE_SUBSHELL_SUPPORT
    /* Don't use subshell when invoked as viewer or editor */
    if (mc_run_mode != MC_RUN_FULL)
        use_subshell = 0;

    if (use_subshell)
        subshell_get_console_attributes ();
#endif /* HAVE_SUBSHELL_SUPPORT */

    /* Install the SIGCHLD handler; must be done before init_subshell() */
    init_sigchld ();

    /* We need this, since ncurses endwin () doesn't restore the signals */
    save_stop_handler ();

    /* Must be done before init_subshell, to set up the terminal size: */
    /* FIXME: Should be removed and LINES and COLS computed on subshell */
    tty_init ((gboolean) mc_args__slow_terminal, (gboolean) mc_args__ugly_line_drawing);

    load_setup ();

    /* Removing this from the X code let's us type C-c */
    load_key_defs ();

    load_keymap_defs ();

    tty_init_colors (mc_args__disable_colors, mc_args__force_colors);

    isInitialized = mc_skin_init (&error);

    mc_filehighlight = mc_fhl_new (TRUE);

    dlg_set_default_colors ();

    if (!isInitialized)
    {
        message (D_ERROR, _("Warning"), "%s", error->message);
        g_error_free (error);
        error = NULL;
    }

    /* create home directory */
    /* do it after the screen library initialization to show the error message */
    mc_dir = concat_dir_and_file (home_dir, MC_USERCONF_DIR);
    canonicalize_pathname (mc_dir);
    if ((stat (mc_dir, &s) != 0) && (errno == ENOENT) && mkdir (mc_dir, 0700) != 0)
        message (D_ERROR, _("Warning"), _("Cannot create %s directory"), mc_dir);
    g_free (mc_dir);

#ifdef HAVE_SUBSHELL_SUPPORT
    /* Done here to ensure that the subshell doesn't  */
    /* inherit the file descriptors opened below, etc */
    if (use_subshell)
        init_subshell ();

#endif /* HAVE_SUBSHELL_SUPPORT */

    /* Also done after init_subshell, to save any shell init file messages */
    if (console_flag)
        handle_console (CONSOLE_SAVE);

    if (alternate_plus_minus)
        application_keypad_mode ();

#ifdef HAVE_SUBSHELL_SUPPORT
    if (use_subshell)
    {
        mc_prompt = strip_ctrl_codes (subshell_prompt);
        if (mc_prompt == NULL)
            mc_prompt = (geteuid () == 0) ? "# " : "$ ";
    }
    else
#endif /* HAVE_SUBSHELL_SUPPORT */
        mc_prompt = (geteuid () == 0) ? "# " : "$ ";

    /* Program main loop */
    if (!midnight_shutdown)
        do_nc ();

    /* Save the tree store */
    tree_store_save ();

    free_keymap_defs ();

    /* Virtual File System shutdown */
    vfs_shut ();

    flush_extension_file ();    /* does only free memory */

    mc_fhl_free (&mc_filehighlight);
    mc_skin_deinit ();

    tty_shutdown ();

    if (console_flag && !(quit & SUBSHELL_EXIT))
        handle_console (CONSOLE_RESTORE);
    if (alternate_plus_minus)
        numeric_keypad_mode ();

    signal (SIGCHLD, SIG_DFL);  /* Disable the SIGCHLD handler */

    if (console_flag)
        handle_console (CONSOLE_DONE);
    putchar ('\n');             /* Hack to make shell's prompt start at left of screen */

    if (mc_run_mode == MC_RUN_FULL && mc_args__last_wd_file && last_wd_string && !print_last_revert)
    {
        int last_wd_fd = open (mc_args__last_wd_file, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL,
                               S_IRUSR | S_IWUSR);

        if (last_wd_fd != -1)
        {
            ssize_t ret1;
            int ret2;
            ret1 = write (last_wd_fd, last_wd_string, strlen (last_wd_string));
            ret2 = close (last_wd_fd);
        }
    }
    g_free (last_wd_string);

    g_free (mc_home_alt);
    g_free (mc_home);
    g_free (shell);

    done_key ();
#ifdef HAVE_CHARSET
    free_codepages_list ();
    g_free (autodetect_codeset);
#endif
    g_free (clipboard_store_path);
    g_free (clipboard_paste_path);

    str_uninit_strings ();

    g_free (mc_run_param0);
    g_free (mc_run_param1);

#ifdef USE_INTERNAL_EDIT
    edit_stack_free ();
#endif

    return 0;
}

/* --------------------------------------------------------------------------------------------- */