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