src/cmd.c

   1 /* Routines invoked by a function key
   2    They normally operate on the current panel.
   3
   4    Copyright (C) 1994, 1995, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
   5    2005, 2006, 2007, 2009 Free Software Foundation, Inc.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  20
  21 /** \file cmd.c
  22  *  \brief Source: routines invoked by a function key
  23  *
  24  *  They normally operate on the current panel.
  25  */
  26
  27 #include <config.h>
  28
  29 #include <errno.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32
  33 #include <sys/types.h>
  34 #include <sys/stat.h>
  35 #ifdef HAVE_MMAP
  36 #   include <sys/mman.h>
  37 #endif
  38 #ifdef USE_NETCODE
  39 #include <netdb.h>
  40 #endif
  41 #include <unistd.h>
  42 #include <stdlib.h>
  43 #include <fcntl.h>
  44 #include <pwd.h>
  45 #include <grp.h>
  46 #include <sys/time.h>
  47
  48 #include "lib/global.h"
  49
  50 #include "lib/tty/tty.h"                /* LINES, tty_touch_screen() */
  51 #include "lib/tty/key.h"                /* ALT() macro */
  52 #include "lib/tty/win.h"                /* do_enter_ca_mode() */
  53 #include "lib/mcconfig/mcconfig.h"
  54 #include "lib/search/search.h"
  55 #include "src/viewer/mcviewer.h"
  56 #include "lib/filehighlight/fhl.h"      /* MC_FHL_INI_FILE */
  57 #include "lib/vfs/mc-vfs/vfs.h"
  58 #include "lib/fileloc.h"
  59
  60 #include "cmd.h"                /* Our definitions */
  61 #include "fileopctx.h"
  62 #include "file.h"               /* file operation routines */
  63 #include "find.h"               /* do_find() */
  64 #include "hotlist.h"            /* hotlist_cmd() */
  65 #include "tree.h"               /* tree_chdir() */
  66 #include "subshell.h"           /* use_subshell */
  67 #include "cons.saver.h"         /* console_flag */
  68 #include "dialog.h"             /* Widget */
  69 #include "wtools.h"             /* message() */
  70 #include "main.h"               /* change_panel() */
  71 #include "panel.h"              /* current_panel */
  72 #include "help.h"               /* interactive_display() */
  73 #include "user.h"               /* MC_GLOBAL_MENU */
  74 #include "command.h"            /* cmdline */
  75 #include "layout.h"             /* get_current_type() */
  76 #include "ext.h"                /* regex_command() */
  77 #include "boxes.h"              /* cd_dialog() */
  78 #include "setup.h"
  79 #include "execute.h"            /* toggle_panels() */
  80 #include "history.h"
  81 #include "strutil.h"
  82 #include "dir.h"
  83 #include "cmddef.h"             /* CK_InputHistoryShow */
  84
  85 #ifndef MAP_FILE
  86 #   define MAP_FILE 0
  87 #endif
  88
  89 #ifdef USE_INTERNAL_EDIT
  90 #   include "src/editor/edit.h"
  91 #endif
  92
  93 /* If set and you don't have subshell support,then C-o will give you a shell */
  94 int output_starts_shell = 0;
  95
  96 /* If set, use the builtin editor */
  97 int use_internal_edit = 1;
  98
  99 /* Automatically fills name with current selected item name on mkdir */
 100 int auto_fill_mkdir_name = 1;
 101
 102 /* if set, only selection of files is inverted */
 103 int reverse_files_only = 1;
 104
 105 /* selection flags */
 106 typedef enum {
 107     SELECT_FILES_ONLY = 1 << 0,
 108     SELECT_MATCH_CASE = 1 << 1,
 109     SELECT_SHELL_PATTERNS = 1 << 2
 110 } select_flags_t;
 111
 112 int select_flags = SELECT_MATCH_CASE | SELECT_SHELL_PATTERNS;
 113
 114 int
 115 view_file_at_line (const char *filename, int plain_view, int internal,
 116                    int start_line)
 117 {
 118     static const char *viewer = NULL;
 119     int move_dir = 0;
 120
 121
 122     if (plain_view) {
 123         int changed_hex_mode = 0;
 124         int changed_nroff_flag = 0;
 125         int changed_magic_flag = 0;
 126
 127         mcview_altered_hex_mode = 0;
 128         mcview_altered_nroff_flag = 0;
 129         mcview_altered_magic_flag = 0;
 130         if (mcview_default_hex_mode)
 131             changed_hex_mode = 1;
 132         if (mcview_default_nroff_flag)
 133             changed_nroff_flag = 1;
 134         if (mcview_default_magic_flag)
 135             changed_magic_flag = 1;
 136         mcview_default_hex_mode = 0;
 137         mcview_default_nroff_flag = 0;
 138         mcview_default_magic_flag = 0;
 139         mcview_viewer (NULL, filename, &move_dir, start_line);
 140         if (changed_hex_mode && !mcview_altered_hex_mode)
 141             mcview_default_hex_mode = 1;
 142         if (changed_nroff_flag && !mcview_altered_nroff_flag)
 143             mcview_default_nroff_flag = 1;
 144         if (changed_magic_flag && !mcview_altered_magic_flag)
 145             mcview_default_magic_flag = 1;
 146         repaint_screen ();
 147         return move_dir;
 148     }
 149     if (internal) {
 150         char view_entry[BUF_TINY];
 151
 152         if (start_line != 0)
 153             g_snprintf (view_entry, sizeof (view_entry), "View:%d",
 154                         start_line);
 155         else
 156             strcpy (view_entry, "View");
 157
 158         if (regex_command (filename, view_entry, &move_dir) == 0) {
 159             mcview_viewer (NULL, filename, &move_dir, start_line);
 160             repaint_screen ();
 161         }
 162     } else {
 163         if (!viewer) {
 164             viewer = getenv ("VIEWER");
 165             if (!viewer)
 166                 viewer = getenv ("PAGER");
 167             if (!viewer)
 168                 viewer = "view";
 169         }
 170         execute_with_vfs_arg (viewer, filename);
 171     }
 172     return move_dir;
 173 }
 174
 175 /* view_file (filename, plain_view, internal)
 176  *
 177  * Inputs:
 178  *   filename:   The file name to view
 179  *   plain_view: If set does not do any fancy pre-processing (no filtering) and
 180  *               always invokes the internal viewer.
 181  *   internal:   If set uses the internal viewer, otherwise an external viewer.
 182  */
 183 int
 184 view_file (const char *filename, int plain_view, int internal)
 185 {
 186     return view_file_at_line (filename, plain_view, internal, 0);
 187 }
 188
 189 /* scan_for_file (panel, idx, direction)
 190  *
 191  * Inputs:
 192  *   panel:     pointer to the panel on which we operate
 193  *   idx:       starting file.
 194  *   direction: 1, or -1
 195  */
 196 static int scan_for_file (WPanel *panel, int idx, int direction)
 197 {
 198     int i = idx + direction;
 199
 200     while (i != idx){
 201         if (i < 0)
 202             i = panel->count - 1;
 203         if (i == panel->count)
 204             i = 0;
 205         if (!S_ISDIR (panel->dir.list [i].st.st_mode))
 206             return i;
 207         i += direction;
 208     }
 209     return i;
 210 }
 211
 212 /*
 213  * Run viewer (internal or external) on the currently selected file.
 214  * If normal is 1, force internal viewer and raw mode (used for F13).
 215  */
 216 static void
 217 do_view_cmd (int normal)
 218 {
 219     /* Directories are viewed by changing to them */
 220     if (S_ISDIR (selection (current_panel)->st.st_mode)
 221         || link_isdir (selection (current_panel))) {
 222         if (confirm_view_dir && (current_panel->marked || current_panel->dirs_marked)) {
 223             if (query_dialog
 224                 (_(" Confirmation "), _("Files tagged, want to cd?"), D_NORMAL, 2,
 225                  _("&Yes"), _("&No")) != 0) {
 226                 return;
 227             }
 228         }
 229         if (!do_cd (selection (current_panel)->fname, cd_exact))
 230             message (D_ERROR, MSG_ERROR, _("Cannot change directory"));
 231     } else {
 232         int dir, file_idx;
 233         char *filename;
 234
 235         file_idx = current_panel->selected;
 236         while (1) {
 237             filename = current_panel->dir.list[file_idx].fname;
 238
 239             dir = view_file (filename, normal, use_internal_view);
 240             if (dir == 0)
 241                 break;
 242             file_idx = scan_for_file (current_panel, file_idx, dir);
 243         }
 244     }
 245
 246     repaint_screen();
 247 }
 248
 249 /* Run user's preferred viewer on the currently selected file */
 250 void
 251 view_cmd (void)
 252 {
 253     do_view_cmd (0);
 254 }
 255
 256 /* Ask for file and run user's preferred viewer on it */
 257 void
 258 view_file_cmd (void)
 259 {
 260     char *filename;
 261
 262     filename =
 263         input_expand_dialog (_(" View file "), _(" Filename:"),
 264                              MC_HISTORY_FM_VIEW_FILE, selection (current_panel)->fname);
 265     if (!filename)
 266         return;
 267
 268     view_file (filename, 0, use_internal_view);
 269     g_free (filename);
 270 }
 271
 272 /* Run plain internal viewer on the currently selected file */
 273 void
 274 view_simple_cmd (void)
 275 {
 276     do_view_cmd (1);
 277 }
 278
 279 void
 280 filtered_view_cmd (void)
 281 {
 282     char *command;
 283
 284     command =
 285         input_dialog (_(" Filtered view "),
 286                       _(" Filter command and arguments:"),
 287                       MC_HISTORY_FM_FILTERED_VIEW,
 288                       selection (current_panel)->fname);
 289     if (!command)
 290         return;
 291
 292     mcview_viewer (command, "", NULL, 0);
 293
 294     g_free (command);
 295 }
 296
 297 void
 298 do_edit_at_line (const char *what, int start_line)
 299 {
 300     static const char *editor = NULL;
 301
 302 #ifdef USE_INTERNAL_EDIT
 303     if (use_internal_edit)
 304         edit_file (what, start_line);
 305     else
 306 #else
 307     (void) start_line;
 308 #endif /* USE_INTERNAL_EDIT */
 309     {
 310         if (editor == NULL) {
 311             editor = getenv ("EDITOR");
 312             if (editor == NULL)
 313                 editor = get_default_editor ();
 314         }
 315         execute_with_vfs_arg (editor, what);
 316     }
 317     update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 318     repaint_screen ();
 319 }
 320
 321 static void
 322 do_edit (const char *what)
 323 {
 324     do_edit_at_line (what, 0);
 325 }
 326
 327 void
 328 edit_cmd (void)
 329 {
 330     if (regex_command (selection (current_panel)->fname, "Edit", 0) == 0)
 331         do_edit (selection (current_panel)->fname);
 332 }
 333
 334 void
 335 edit_cmd_new (void)
 336 {
 337     do_edit (NULL);
 338 }
 339
 340 /* Invoked by F5.  Copy, default to the other panel.  */
 341 void
 342 copy_cmd (void)
 343 {
 344     save_cwds_stat ();
 345     if (panel_operate (current_panel, OP_COPY, 0)) {
 346         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 347         repaint_screen ();
 348     }
 349 }
 350
 351 /* Invoked by F6.  Move/rename, default to the other panel, ignore marks.  */
 352 void rename_cmd (void)
 353 {
 354     save_cwds_stat ();
 355     if (panel_operate (current_panel, OP_MOVE, 0)){
 356         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 357         repaint_screen ();
 358     }
 359 }
 360
 361 /* Invoked by F15.  Copy, default to the same panel, ignore marks.  */
 362 void copy_cmd_local (void)
 363 {
 364     save_cwds_stat ();
 365     if (panel_operate (current_panel, OP_COPY, 1)){
 366         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 367         repaint_screen ();
 368     }
 369 }
 370
 371 /* Invoked by F16.  Move/rename, default to the same panel.  */
 372 void rename_cmd_local (void)
 373 {
 374     save_cwds_stat ();
 375     if (panel_operate (current_panel, OP_MOVE, 1)){
 376         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 377         repaint_screen ();
 378     }
 379 }
 380
 381 void
 382 mkdir_cmd (void)
 383 {
 384     char *dir, *absdir;
 385     const char *name = "";
 386
 387     /* If 'on' then automatically fills name with current selected item name */
 388     if (auto_fill_mkdir_name)
 389         name = selection (current_panel)->fname;
 390
 391     dir =
 392         input_expand_dialog (_("Create a new Directory"),
 393                              _(" Enter directory name:"),
 394                              MC_HISTORY_FM_MKDIR,
 395                              name);
 396
 397     if (!dir)
 398         return;
 399
 400     if (dir[0] == '/' || dir[0] == '~')
 401         absdir = g_strdup (dir);
 402     else
 403         absdir = concat_dir_and_file (current_panel->cwd, dir);
 404
 405     save_cwds_stat ();
 406     if (my_mkdir (absdir, 0777) == 0) {
 407         update_panels (UP_OPTIMIZE, dir);
 408         repaint_screen ();
 409         select_item (current_panel);
 410     } else {
 411         message (D_ERROR, MSG_ERROR, "  %s  ", unix_error_string (errno));
 412     }
 413
 414     g_free (absdir);
 415     g_free (dir);
 416 }
 417
 418 void delete_cmd (void)
 419 {
 420     save_cwds_stat ();
 421
 422     if (panel_operate (current_panel, OP_DELETE, 0)){
 423         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 424         repaint_screen ();
 425     }
 426 }
 427
 428 /* Invoked by F18.  Remove selected file, regardless of marked files.  */
 429 void delete_cmd_local (void)
 430 {
 431     save_cwds_stat ();
 432
 433     if (panel_operate (current_panel, OP_DELETE, 1)){
 434         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 435         repaint_screen ();
 436     }
 437 }
 438
 439 void find_cmd (void)
 440 {
 441     do_find ();
 442 }
 443
 444 static void
 445 set_panel_filter_to (WPanel *p, char *allocated_filter_string)
 446 {
 447     g_free (p->filter);
 448     p->filter = 0;
 449
 450     if (!(allocated_filter_string [0] == '*' && allocated_filter_string [1] == 0))
 451         p->filter = allocated_filter_string;
 452     else
 453         g_free (allocated_filter_string);
 454     reread_cmd ();
 455 }
 456
 457 /* Set a given panel filter expression */
 458 static void
 459 set_panel_filter (WPanel *p)
 460 {
 461     char *reg_exp;
 462     const char *x;
 463
 464     x = p->filter ? p->filter : easy_patterns ? "*" : ".";
 465
 466     reg_exp = input_dialog_help (_(" Filter "),
 467                                  _(" Set expression for filtering filenames"),
 468                                  "[Filter...]", MC_HISTORY_FM_PANEL_FILTER, x);
 469     if (!reg_exp)
 470         return;
 471     set_panel_filter_to (p, reg_exp);
 472 }
 473
 474 /* Invoked from the left/right menus */
 475 void filter_cmd (void)
 476 {
 477     WPanel *p;
 478
 479     if (!SELECTED_IS_PANEL)
 480         return;
 481
 482     p = MENU_PANEL;
 483     set_panel_filter (p);
 484 }
 485
 486 void reread_cmd (void)
 487 {
 488     int flag;
 489
 490     if (get_current_type () == view_listing &&
 491         get_other_type () == view_listing)
 492         flag = strcmp (current_panel->cwd, other_panel->cwd) ? UP_ONLY_CURRENT : 0;
 493     else
 494         flag = UP_ONLY_CURRENT;
 495
 496     update_panels (UP_RELOAD|flag, UP_KEEPSEL);
 497     repaint_screen ();
 498 }
 499
 500 void
 501 reverse_selection_cmd (void)
 502 {
 503     int i;
 504     file_entry *file;
 505
 506     for (i = 0; i < current_panel->count; i++) {
 507         file = &current_panel->dir.list [i];
 508         if ((reverse_files_only == 0) || !S_ISDIR (file->st.st_mode))
 509             do_file_mark (current_panel, i, !file->f.marked);
 510     }
 511 }
 512
 513 static void
 514 select_unselect_cmd (const char *title, const char *history_name, gboolean do_select)
 515 {
 516     /* dialog sizes */
 517     const int DX = 50;
 518     const int DY = 7;
 519
 520     int files_only = (select_flags & SELECT_FILES_ONLY) != 0;
 521     int case_sens = (select_flags & SELECT_MATCH_CASE) != 0;
 522     int shell_patterns = (select_flags & SELECT_SHELL_PATTERNS) != 0;
 523
 524     char *reg_exp;
 525     mc_search_t *search;
 526     int i;
 527
 528     QuickWidget quick_widgets[] =
 529     {
 530         QUICK_CHECKBOX (3,        DX, DY - 3, DY, N_("&Using shell patterns"), &shell_patterns),
 531         QUICK_CHECKBOX (DX/2 + 1, DX, DY - 4, DY, N_("&Case sensitive"),       &case_sens),
 532         QUICK_CHECKBOX (3,        DX, DY - 4, DY, N_("&Files only"),           &files_only),
 533         QUICK_INPUT    (3,        DX, DY - 5, DY, INPUT_LAST_TEXT, DX - 6, 0, history_name, &reg_exp),
 534         QUICK_END
 535     };
 536
 537     QuickDialog quick_dlg =
 538     {
 539         DX, DY, -1, -1, title,
 540         "[Select/Unselect Files]", quick_widgets, FALSE
 541     };
 542
 543     if (quick_dialog (&quick_dlg) == B_CANCEL)
 544         return;
 545
 546     if (!reg_exp)
 547         return;
 548     if (!*reg_exp) {
 549         g_free (reg_exp);
 550         return;
 551     }
 552     search = mc_search_new (reg_exp, -1);
 553     search->search_type = (shell_patterns != 0) ? MC_SEARCH_T_GLOB : MC_SEARCH_T_REGEX;
 554     search->is_entire_line = TRUE;
 555     search->is_case_sentitive = case_sens != 0;
 556
 557     for (i = 0; i < current_panel->count; i++) {
 558         if (strcmp (current_panel->dir.list[i].fname, "..") == 0)
 559             continue;
 560         if (S_ISDIR (current_panel->dir.list[i].st.st_mode) && files_only != 0)
 561             continue;
 562
 563         if (mc_search_run (search, current_panel->dir.list[i].fname,
 564                             0, current_panel->dir.list[i].fnamelen, NULL))
 565             do_file_mark (current_panel, i, do_select);
 566     }
 567
 568     mc_search_free (search);
 569     g_free (reg_exp);
 570
 571     /* result flags */
 572     select_flags = 0;
 573     if (case_sens != 0)
 574         select_flags |= SELECT_MATCH_CASE;
 575     if (files_only != 0)
 576         select_flags |= SELECT_FILES_ONLY;
 577     if (shell_patterns != 0)
 578         select_flags |= SELECT_SHELL_PATTERNS;
 579 }
 580
 581 void select_cmd (void)
 582 {
 583     select_unselect_cmd (_(" Select "), ":select_cmd: Select ", TRUE);
 584 }
 585
 586 void unselect_cmd (void)
 587 {
 588     select_unselect_cmd (_(" Unselect "), ":unselect_cmd: Unselect ", FALSE);
 589 }
 590
 591 void ext_cmd (void)
 592 {
 593     char *buffer;
 594     char *extdir;
 595     int  dir;
 596
 597     dir = 0;
 598     if (geteuid () == 0){
 599         dir = query_dialog (_("Extension file edit"),
 600                             _(" Which extension file you want to edit? "), D_NORMAL, 2,
 601                             _("&User"), _("&System Wide"));
 602     }
 603     extdir = concat_dir_and_file (mc_home, MC_LIB_EXT);
 604
 605     if (dir == 0){
 606         buffer = g_build_filename (home_dir, MC_USERCONF_DIR, MC_FILEBIND_FILE, NULL);
 607         check_for_default (extdir, buffer);
 608         do_edit (buffer);
 609         g_free (buffer);
 610     } else if (dir == 1) {
 611         if (!exist_file(extdir)) {
 612             g_free (extdir);
 613             extdir = concat_dir_and_file (mc_home_alt, MC_LIB_EXT);
 614         }
 615         do_edit (extdir);
 616     }
 617    g_free (extdir);
 618    flush_extension_file ();
 619 }
 620
 621 /* edit file menu for mc */
 622 void
 623 edit_mc_menu_cmd (void)
 624 {
 625     char *buffer;
 626     char *menufile;
 627     int dir = 0;
 628
 629     dir = query_dialog (
 630         _(" Menu edit "),
 631         _(" Which menu file do you want to edit? "),
 632         D_NORMAL, geteuid() ? 2 : 3,
 633         _("&Local"), _("&User"), _("&System Wide")
 634     );
 635
 636     menufile = concat_dir_and_file (mc_home, MC_GLOBAL_MENU);
 637
 638     if (!exist_file(menufile)) {
 639         g_free (menufile);
 640         menufile = concat_dir_and_file (mc_home_alt, MC_GLOBAL_MENU);
 641     }
 642
 643     switch (dir) {
 644         case 0:
 645             buffer = g_strdup (MC_LOCAL_MENU);
 646             check_for_default (menufile, buffer);
 647             chmod (buffer, 0600);
 648             break;
 649
 650         case 1:
 651             buffer = g_build_filename (home_dir, MC_USERCONF_DIR, MC_USERMENU_FILE, NULL);
 652             check_for_default (menufile, buffer);
 653             break;
 654
 655         case 2:
 656             buffer = concat_dir_and_file (mc_home, MC_GLOBAL_MENU);
 657             if (!exist_file(buffer)) {
 658                 g_free (buffer);
 659                 buffer = concat_dir_and_file (mc_home_alt, MC_GLOBAL_MENU);
 660             }
 661             break;
 662
 663         default:
 664             g_free (menufile);
 665             return;
 666     }
 667
 668     do_edit (buffer);
 669
 670     g_free (buffer);
 671     g_free (menufile);
 672 }
 673
 674 void edit_fhl_cmd (void)
 675 {
 676     char *buffer = NULL;
 677     char *fhlfile = NULL;
 678
 679     int  dir;
 680
 681     dir = 0;
 682     if (geteuid () == 0){
 683         dir = query_dialog (_("Highlighting groups file edit"),
 684                             _(" Which highlighting file you want to edit? "), D_NORMAL, 2,
 685                             _("&User"), _("&System Wide"));
 686     }
 687     fhlfile = concat_dir_and_file (mc_home, MC_FHL_INI_FILE);
 688
 689     if (dir == 0){
 690         buffer = g_build_filename (home_dir, MC_USERCONF_DIR, MC_FHL_INI_FILE, NULL);
 691         check_for_default (fhlfile, buffer);
 692         do_edit (buffer);
 693         g_free (buffer);
 694     } else if (dir == 1) {
 695         if (!exist_file(fhlfile)) {
 696             g_free (fhlfile);
 697             fhlfile = concat_dir_and_file (mc_home, MC_FHL_INI_FILE);
 698         }
 699         do_edit (fhlfile);
 700     }
 701    g_free (fhlfile);
 702
 703     /* refresh highlighting rules */
 704    mc_fhl_free (&mc_filehighlight);
 705    mc_filehighlight = mc_fhl_new (TRUE);
 706 }
 707
 708 void quick_chdir_cmd (void)
 709 {
 710     char *target;
 711
 712     target = hotlist_cmd (LIST_HOTLIST);
 713     if (!target)
 714         return;
 715
 716     if (get_current_type () == view_tree)
 717         tree_chdir (the_tree, target);
 718     else {
 719         char *cmd = g_strconcat ("cd ", target, (char *) NULL);
 720         do_cd_command (cmd);
 721         g_free (cmd);
 722     }
 723     g_free (target);
 724 }
 725
 726 #ifdef ENABLE_VFS
 727 void reselect_vfs (void)
 728 {
 729     char *target;
 730
 731     target = hotlist_cmd (LIST_VFSLIST);
 732     if (!target)
 733         return;
 734
 735     if (!do_cd (target, cd_exact))
 736         message (D_ERROR, MSG_ERROR, _("Cannot change directory") );
 737     g_free (target);
 738 }
 739 #endif /* ENABLE_VFS */
 740
 741 static int compare_files (char *name1, char *name2, off_t size)
 742 {
 743     int file1, file2;
 744     int result = -1;            /* Different by default */
 745
 746     if (size == 0)
 747         return 0;
 748
 749     file1 = open (name1, O_RDONLY);
 750     if (file1 >= 0){
 751         file2 = open (name2, O_RDONLY);
 752         if (file2 >= 0){
 753 #ifdef HAVE_MMAP
 754             char *data1, *data2;
 755             /* Ugly if jungle */
 756             data1 = mmap (0, size, PROT_READ, MAP_FILE | MAP_PRIVATE, file1, 0);
 757             if (data1 != (char*) -1){
 758                 data2 = mmap (0, size, PROT_READ, MAP_FILE | MAP_PRIVATE, file2, 0);
 759                 if (data2 != (char*) -1){
 760                     rotate_dash ();
 761                     result = memcmp (data1, data2, size);
 762                     munmap (data2, size);
 763                 }
 764                 munmap (data1, size);
 765             }
 766 #else
 767             /* Don't have mmap() :( Even more ugly :) */
 768             char buf1[BUFSIZ], buf2[BUFSIZ];
 769             int n1, n2;
 770             rotate_dash ();
 771             do
 772             {
 773                 while((n1 = read(file1,buf1,BUFSIZ)) == -1 && errno == EINTR);
 774                 while((n2 = read(file2,buf2,BUFSIZ)) == -1 && errno == EINTR);
 775             } while (n1 == n2 && n1 == BUFSIZ && !memcmp(buf1,buf2,BUFSIZ));
 776             result = (n1 != n2) || memcmp(buf1,buf2,n1);
 777 #endif /* !HAVE_MMAP */
 778             close (file2);
 779         }
 780         close (file1);
 781     }
 782     return result;
 783 }
 784
 785 enum CompareMode {
 786     compare_quick, compare_size_only, compare_thourough
 787 };
 788
 789 static void
 790 compare_dir (WPanel *panel, WPanel *other, enum CompareMode mode)
 791 {
 792     int i, j;
 793     char *src_name, *dst_name;
 794
 795     /* No marks by default */
 796     panel->marked = 0;
 797     panel->total = 0;
 798     panel->dirs_marked = 0;
 799
 800     /* Handle all files in the panel */
 801     for (i = 0; i < panel->count; i++){
 802         file_entry *source = &panel->dir.list[i];
 803
 804         /* Default: unmarked */
 805         file_mark (panel, i, 0);
 806
 807         /* Skip directories */
 808         if (S_ISDIR (source->st.st_mode))
 809             continue;
 810
 811         /* Search the corresponding entry from the other panel */
 812         for (j = 0; j < other->count; j++){
 813             if (strcmp (source->fname,
 814                         other->dir.list[j].fname) == 0)
 815                 break;
 816         }
 817         if (j >= other->count)
 818             /* Not found -> mark */
 819             do_file_mark (panel, i, 1);
 820         else {
 821             /* Found */
 822             file_entry *target = &other->dir.list[j];
 823
 824             if (mode != compare_size_only){
 825                 /* Older version is not marked */
 826                 if (source->st.st_mtime < target->st.st_mtime)
 827                     continue;
 828             }
 829
 830             /* Newer version with different size is marked */
 831             if (source->st.st_size != target->st.st_size){
 832                 do_file_mark (panel, i, 1);
 833                 continue;
 834
 835             }
 836             if (mode == compare_size_only)
 837                 continue;
 838
 839             if (mode == compare_quick){
 840                 /* Thorough compare off, compare only time stamps */
 841                 /* Mark newer version, don't mark version with the same date */
 842                 if (source->st.st_mtime > target->st.st_mtime){
 843                     do_file_mark (panel, i, 1);
 844                 }
 845                 continue;
 846             }
 847
 848             /* Thorough compare on, do byte-by-byte comparison */
 849             src_name = concat_dir_and_file (panel->cwd, source->fname);
 850             dst_name = concat_dir_and_file (other->cwd, target->fname);
 851             if (compare_files (src_name, dst_name, source->st.st_size))
 852                 do_file_mark (panel, i, 1);
 853             g_free (src_name);
 854             g_free (dst_name);
 855         }
 856     } /* for (i ...) */
 857 }
 858
 859 void
 860 compare_dirs_cmd (void)
 861 {
 862     int choice;
 863     enum CompareMode thorough_flag;
 864
 865     choice =
 866         query_dialog (_(" Compare directories "),
 867                       _(" Select compare method: "), D_NORMAL, 4,
 868                       _("&Quick"), _("&Size only"), _("&Thorough"), _("&Cancel"));
 869
 870     if (choice < 0 || choice > 2)
 871         return;
 872
 873     thorough_flag = choice;
 874
 875     if (get_current_type () == view_listing
 876         && get_other_type () == view_listing) {
 877         compare_dir (current_panel, other_panel, thorough_flag);
 878         compare_dir (other_panel, current_panel, thorough_flag);
 879     } else {
 880         message (D_ERROR, MSG_ERROR,
 881                  _(" Both panels should be in the "
 882                    "listing mode to use this command "));
 883     }
 884 }
 885
 886 void
 887 history_cmd (void)
 888 {
 889     /* show the history of command line widget */
 890     send_message (&cmdline->widget, WIDGET_COMMAND, CK_InputHistoryShow);
 891 }
 892
 893 void swap_cmd (void)
 894 {
 895     swap_panels ();
 896     tty_touch_screen ();
 897     repaint_screen ();
 898 }
 899
 900 void
 901 view_other_cmd (void)
 902 {
 903     static int message_flag = TRUE;
 904
 905     if (!xterm_flag && !console_flag && !use_subshell && !output_starts_shell) {
 906         if (message_flag)
 907             message (D_ERROR, MSG_ERROR,
 908                      _(" Not an xterm or Linux console; \n"
 909                        " the panels cannot be toggled. "));
 910         message_flag = FALSE;
 911     } else {
 912         toggle_panels ();
 913     }
 914 }
 915
 916 static void
 917 do_link (int symbolic_link, const char *fname)
 918 {
 919     char *dest = NULL, *src = NULL;
 920
 921     if (!symbolic_link) {
 922         src = g_strdup_printf (_("Link %s to:"), str_trunc (fname, 46));
 923         dest = input_expand_dialog (_(" Link "), src, MC_HISTORY_FM_LINK, "");
 924         if (!dest || !*dest)
 925             goto cleanup;
 926         save_cwds_stat ();
 927         if (-1 == mc_link (fname, dest))
 928             message (D_ERROR, MSG_ERROR, _(" link: %s "),
 929                      unix_error_string (errno));
 930     } else {
 931         char *s;
 932         char *d;
 933
 934         /* suggest the full path for symlink */
 935         s = concat_dir_and_file (current_panel->cwd, fname);
 936
 937         if (get_other_type () == view_listing) {
 938             d = concat_dir_and_file (other_panel->cwd, fname);
 939         } else {
 940             d = g_strdup (fname);
 941         }
 942
 943         symlink_dialog (s, d, &dest, &src);
 944         g_free (d);
 945         g_free (s);
 946
 947         if (!dest || !*dest || !src || !*src)
 948             goto cleanup;
 949         save_cwds_stat ();
 950         if (-1 == mc_symlink (dest, src))
 951             message (D_ERROR, MSG_ERROR, _(" symlink: %s "),
 952                      unix_error_string (errno));
 953     }
 954     update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 955     repaint_screen ();
 956
 957 cleanup:
 958     g_free (src);
 959     g_free (dest);
 960 }
 961
 962 void link_cmd (void)
 963 {
 964     do_link (0, selection (current_panel)->fname);
 965 }
 966
 967 void symlink_cmd (void)
 968 {
 969     char *filename = NULL;
 970     filename = selection (current_panel)->fname;
 971
 972     if (filename) {
 973         do_link (1, filename);
 974     }
 975 }
 976
 977 void edit_symlink_cmd (void)
 978 {
 979     if (S_ISLNK (selection (current_panel)->st.st_mode)) {
 980         char buffer [MC_MAXPATHLEN];
 981         char *p = NULL;
 982         int i;
 983         char *dest, *q;
 984
 985         p = selection (current_panel)->fname;
 986
 987         q = g_strdup_printf (_(" Symlink `%s\' points to: "), str_trunc (p, 32));
 988
 989         i = readlink (p, buffer, MC_MAXPATHLEN - 1);
 990         if (i > 0) {
 991             buffer [i] = 0;
 992             dest = input_expand_dialog (_(" Edit symlink "), q, MC_HISTORY_FM_EDIT_LINK, buffer);
 993             if (dest) {
 994                 if (*dest && strcmp (buffer, dest)) {
 995                     save_cwds_stat ();
 996                     if (-1 == mc_unlink (p)){
 997                         message (D_ERROR, MSG_ERROR, _(" edit symlink, unable to remove %s: %s "),
 998                                  p, unix_error_string (errno));
 999                     } else {
1000                             if (-1 == mc_symlink (dest, p))
1001                                     message (D_ERROR, MSG_ERROR, _(" edit symlink: %s "),
1002                                              unix_error_string (errno));
1003                     }
1004                     update_panels (UP_OPTIMIZE, UP_KEEPSEL);
1005                     repaint_screen ();
1006                 }
1007                 g_free (dest);
1008             }
1009         }
1010         g_free (q);
1011     } else {
1012         message (D_ERROR, MSG_ERROR, _("`%s' is not a symbolic link"),
1013                  selection (current_panel)->fname);
1014     }
1015 }
1016
1017 void help_cmd (void)
1018 {
1019    interactive_display (NULL, "[main]");
1020 }
1021
1022 void
1023 user_file_menu_cmd (void)
1024 {
1025     user_menu_cmd (NULL);
1026 }
1027
1028 /*
1029  * Return a random hint.  If force is not 0, ignore the timeout.
1030  */
1031 char *
1032 get_random_hint (int force)
1033 {
1034     char *data, *result = NULL, *eol;
1035     int len;
1036     int start;
1037     static int last_sec;
1038     static struct timeval tv;
1039     GIConv conv;
1040     GString *buffer;
1041
1042     /* Do not change hints more often than one minute */
1043     gettimeofday (&tv, NULL);
1044     if (!force && !(tv.tv_sec > last_sec + 60))
1045         return g_strdup ("");
1046     last_sec = tv.tv_sec;
1047
1048     data = load_mc_home_file (mc_home, mc_home_alt, MC_HINT, NULL);
1049     if (!data)
1050         return 0;
1051
1052     /* get a random entry */
1053     srand (tv.tv_sec);
1054     len = strlen (data);
1055     start = rand () % len;
1056
1057     for (; start; start--) {
1058         if (data[start] == '\n') {
1059             start++;
1060             break;
1061         }
1062     }
1063     eol = strchr (&data[start], '\n');
1064     if (eol)
1065         *eol = 0;
1066
1067     /* hint files are stored in utf-8 */
1068     /* try convert hint file from utf-8 to terminal encoding */
1069     conv = str_crt_conv_from ("UTF-8");
1070     if (conv != INVALID_CONV) {
1071         buffer = g_string_new ("");
1072         if (str_convert (conv, &data[start], buffer) != ESTR_FAILURE) {
1073             result = g_strdup (buffer->str);
1074         }
1075         g_string_free (buffer, TRUE);
1076         str_close_conv (conv);
1077     }
1078
1079     g_free (data);
1080     return result;
1081 }
1082
1083 #if defined(USE_NETCODE) || defined(USE_EXT2FSLIB)
1084 static void
1085 nice_cd (const char *text, const char *xtext, const char *help,
1086          const char *history_name, const char *prefix, int to_home)
1087 {
1088     char *machine;
1089     char *cd_path;
1090
1091     if (!SELECTED_IS_PANEL)
1092         return;
1093
1094     machine = input_dialog_help (text, xtext, help, history_name, "");
1095     if (!machine)
1096         return;
1097
1098     to_home = 0;        /* FIXME: how to solve going to home nicely? /~/ is
1099                            ugly as hell and leads to problems in vfs layer */
1100
1101     if (strncmp (prefix, machine, strlen (prefix)) == 0)
1102         cd_path = g_strconcat (machine, to_home ? "/~/" : (char *) NULL, (char *) NULL);
1103     else
1104         cd_path = g_strconcat (prefix, machine, to_home ? "/~/" : (char *) NULL, (char *) NULL);
1105
1106     if (do_panel_cd (MENU_PANEL, cd_path, 0))
1107         directory_history_add (MENU_PANEL, (MENU_PANEL)->cwd);
1108     else
1109         message (D_ERROR, MSG_ERROR, _(" Cannot chdir to %s "), cd_path);
1110     g_free (cd_path);
1111     g_free (machine);
1112 }
1113 #endif /* USE_NETCODE || USE_EXT2FSLIB */
1114
1115
1116 #ifdef USE_NETCODE
1117
1118 static const char *machine_str = N_(" Enter machine name (F1 for details): ");
1119
1120 #ifdef ENABLE_VFS_MCFS
1121 void netlink_cmd (void)
1122 {
1123     nice_cd (_(" Link to a remote machine "), _(machine_str),
1124              "[Network File System]", ":netlink_cmd: Link to a remote ",
1125              "/#mc:", 1);
1126 }
1127 #endif /* ENABLE_VFS_MCFS */
1128
1129 void ftplink_cmd (void)
1130 {
1131     nice_cd (_(" FTP to machine "), _(machine_str),
1132              "[FTP File System]", ":ftplink_cmd: FTP to machine ", "/#ftp:", 1);
1133 }
1134
1135 void fishlink_cmd (void)
1136 {
1137     nice_cd (_(" Shell link to machine "), _(machine_str),
1138              "[FIle transfer over SHell filesystem]", ":fishlink_cmd: Shell link to machine ",
1139              "/#sh:", 1);
1140 }
1141
1142 #ifdef ENABLE_VFS_SMB
1143 void smblink_cmd (void)
1144 {
1145     nice_cd (_(" SMB link to machine "), _(machine_str),
1146              "[SMB File System]", ":smblink_cmd: SMB link to machine ",
1147              "/#smb:", 0);
1148 }
1149 #endif /* ENABLE_VFS_SMB */
1150 #endif /* USE_NETCODE */
1151
1152 #ifdef USE_EXT2FSLIB
1153 void undelete_cmd (void)
1154 {
1155     nice_cd (_(" Undelete files on an ext2 file system "),
1156              _(" Enter device (without /dev/) to undelete\n "
1157                "  files on: (F1 for details)"),
1158              "[Undelete File System]", ":undelete_cmd: Undel on ext2 fs ",
1159              "/#undel:", 0);
1160 }
1161 #endif /* USE_EXT2FSLIB */
1162
1163 void quick_cd_cmd (void)
1164 {
1165     char *p = cd_dialog ();
1166
1167     if (p && *p) {
1168         char *q = g_strconcat ("cd ", p, (char *) NULL);
1169
1170         do_cd_command (q);
1171         g_free (q);
1172     }
1173     g_free (p);
1174 }
1175
1176
1177 /*!
1178   \brief calculate dirs sizes
1179
1180   calculate dirs sizes and resort panel:
1181     dirs_selected = show size for selected dirs,
1182     otherwise = show size for dir under cursor:
1183       dir under cursor ".." = show size for all dirs,
1184       otherwise = show size for dir under cursor
1185 */
1186 void
1187 smart_dirsize_cmd (void)
1188 {
1189     WPanel *panel = current_panel;
1190     file_entry *entry;
1191
1192     entry = &(panel->dir.list[panel->selected]);
1193     if ( ( S_ISDIR (entry->st.st_mode) && ( strcmp(entry->fname, "..") == 0 ) )
1194         || panel->dirs_marked )
1195          dirsizes_cmd ();
1196     else
1197          single_dirsize_cmd ();
1198 }
1199
1200 void
1201 single_dirsize_cmd (void)
1202 {
1203     WPanel *panel = current_panel;
1204     file_entry *entry;
1205     off_t marked;
1206     double total;
1207     ComputeDirSizeUI *ui;
1208
1209     entry = &(panel->dir.list[panel->selected]);
1210     if (S_ISDIR (entry->st.st_mode) && strcmp(entry->fname, "..") != 0) {
1211         ui = compute_dir_size_create_ui ();
1212
1213         total = 0.0;
1214
1215         if (compute_dir_size (entry->fname, ui, compute_dir_size_update_ui,
1216                                 &marked, &total) == FILE_CONT) {
1217             entry->st.st_size = (off_t) total;
1218             entry->f.dir_size_computed = 1;
1219         }
1220
1221         compute_dir_size_destroy_ui (ui);
1222     }
1223
1224     if (mark_moves_down)
1225         send_message (&(panel->widget), WIDGET_KEY, KEY_DOWN);
1226
1227     recalculate_panel_summary (panel);
1228
1229     if ( current_panel->current_sort_field->sort_routine == (sortfn *) sort_size )
1230         panel_re_sort (panel);
1231
1232     panel->dirty = 1;
1233 }
1234
1235 void
1236 dirsizes_cmd (void)
1237 {
1238     WPanel *panel = current_panel;
1239     int i;
1240     off_t marked;
1241     double total;
1242     ComputeDirSizeUI *ui;
1243
1244     ui = compute_dir_size_create_ui ();
1245
1246     for (i = 0; i < panel->count; i++)
1247         if (S_ISDIR (panel->dir.list [i].st.st_mode)
1248             && ((panel->dirs_marked && panel->dir.list [i].f.marked)
1249                 || !panel->dirs_marked)
1250             && strcmp (panel->dir.list [i].fname, "..") != 0) {
1251             total = 0.0l;
1252
1253             if (compute_dir_size (panel->dir.list [i].fname,
1254                                     ui, compute_dir_size_update_ui,
1255                                     &marked, &total) != FILE_CONT)
1256                 break;
1257
1258             panel->dir.list [i].st.st_size = (off_t) total;
1259             panel->dir.list [i].f.dir_size_computed = 1;
1260         }
1261
1262     compute_dir_size_destroy_ui (ui);
1263
1264     recalculate_panel_summary (panel);
1265
1266     if ( current_panel->current_sort_field->sort_routine == (sortfn *) sort_size )
1267         panel_re_sort (panel);
1268
1269     panel->dirty = 1;
1270 }
1271
1272 void
1273 save_setup_cmd (void)
1274 {
1275     if (! save_setup ())
1276         return;
1277     message (D_NORMAL, _(" Setup "), _(" Setup saved to ~/%s"),
1278              MC_USERCONF_DIR PATH_SEP_STR MC_CONFIG_FILE);
1279 }
1280
1281 static void
1282 configure_panel_listing (WPanel *p, int list_type, int use_msformat, char *user, char *status)
1283 {
1284     p->user_mini_status = use_msformat;
1285     p->list_type = list_type;
1286
1287     if (list_type == list_user || use_msformat) {
1288         g_free (p->user_format);
1289         p->user_format = user;
1290
1291         g_free (p->user_status_format [list_type]);
1292         p->user_status_format [list_type] = status;
1293
1294         set_panel_formats (p);
1295     } else {
1296         g_free (user);
1297         g_free (status);
1298     }
1299
1300     set_panel_formats (p);
1301     do_refresh ();
1302 }
1303
1304 void
1305 info_cmd_no_menu (void)
1306 {
1307     if (get_display_type (0) == view_info)
1308         set_display_type (0, view_listing);
1309     else if (get_display_type (1) == view_info)
1310         set_display_type (1, view_listing);
1311     else
1312         set_display_type (current_panel == left_panel ? 1 : 0, view_info);
1313 }
1314
1315 void
1316 quick_cmd_no_menu (void)
1317 {
1318     if (get_display_type (0) == view_quick)
1319         set_display_type (0, view_listing);
1320     else if (get_display_type (1) == view_quick)
1321         set_display_type (1, view_listing);
1322     else
1323         set_display_type (current_panel == left_panel ? 1 : 0, view_quick);
1324 }
1325
1326 static void
1327 switch_to_listing (int panel_index)
1328 {
1329     if (get_display_type (panel_index) != view_listing)
1330         set_display_type (panel_index, view_listing);
1331 }
1332
1333 void
1334 listing_cmd (void)
1335 {
1336     int list_type;
1337     int use_msformat;
1338     char  *user, *status;
1339     WPanel *p = NULL;
1340
1341     if (get_display_type (MENU_PANEL_IDX) == view_listing)
1342         p = MENU_PANEL_IDX == 0 ? left_panel : right_panel;
1343
1344     list_type = display_box (p, &user, &status, &use_msformat, MENU_PANEL_IDX);
1345
1346     if (list_type != -1) {
1347         switch_to_listing (MENU_PANEL_IDX);
1348         p = MENU_PANEL_IDX == 0 ? left_panel : right_panel;
1349         configure_panel_listing (p, list_type, use_msformat, user, status);
1350     }
1351 }
1352
1353 void
1354 tree_cmd (void)
1355 {
1356     set_display_type (MENU_PANEL_IDX, view_tree);
1357 }
1358
1359 void
1360 info_cmd (void)
1361 {
1362     set_display_type (MENU_PANEL_IDX, view_info);
1363 }
1364
1365 void
1366 quick_view_cmd (void)
1367 {
1368     if ((WPanel *) get_panel_widget (MENU_PANEL_IDX) == current_panel)
1369         change_panel ();
1370     set_display_type (MENU_PANEL_IDX, view_quick);
1371 }
1372
1373 /* Handle the tree internal listing modes switching */
1374 static gboolean
1375 set_basic_panel_listing_to (int panel_index, int listing_mode)
1376 {
1377     WPanel *p = (WPanel *) get_panel_widget (panel_index);
1378     gboolean ok;
1379
1380     switch_to_listing (panel_index);
1381     p->list_type = listing_mode;
1382
1383     ok = set_panel_formats (p) == 0;
1384
1385     if (ok)
1386         do_refresh ();
1387
1388     return ok;
1389 }
1390
1391 void
1392 toggle_listing_cmd (void)
1393 {
1394     int current = get_current_index ();
1395     WPanel *p = (WPanel *) get_panel_widget (current);
1396
1397     set_basic_panel_listing_to (current, (p->list_type + 1) % LIST_TYPES);
1398 }
1399
1400 void
1401 encoding_cmd (void)
1402 {
1403     if (SELECTED_IS_PANEL)
1404         set_panel_encoding (MENU_PANEL);
1405 }