src/cmd.c

   1 /* Routines invoked by a function key
   2    They normally operate on the current panel.
   3
   4    Copyright (C) 1994, 1995 Miguel de Icaza
   5    Copyright (C) 1994, 1995 Janne Kukonlehto
   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #include <config.h>
  22
  23 #ifdef HAVE_UNISTD_H
  24 #   include <unistd.h>
  25 #endif
  26
  27 #include <stdio.h>
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <string.h>
  31 #include <errno.h>
  32
  33 #ifdef USE_NETCODE
  34 #include <netdb.h>
  35 #endif
  36
  37 #ifdef HAVE_MMAP
  38 #   include <sys/mman.h>
  39 #endif
  40
  41 #include "global.h"
  42 #include "cmd.h"                /* Our definitions */
  43 #include "fileopctx.h"          /* file_op_context_new() */
  44 #include "file.h"               /* copy_file_file() */
  45 #include "find.h"               /* do_find() */
  46 #include "hotlist.h"            /* hotlist_cmd() */
  47 #include "tree.h"               /* tree_chdir() */
  48 #include "subshell.h"           /* use_subshell */
  49 #include "cons.saver.h"         /* console_flag */
  50 #include "tty.h"                /* LINES */
  51 #include "dialog.h"             /* Widget */
  52 #include "view.h"               /* view() */
  53 #include "wtools.h"             /* message() */
  54 #include "widget.h"             /* push_history() */
  55 #include "key.h"                /* application_keypad_mode() */
  56 #include "win.h"                /* do_enter_ca_mode() */
  57 #include "main.h"               /* change_panel() */
  58 #include "panel.h"              /* current_panel */
  59 #include "help.h"               /* interactive_display() */
  60 #include "user.h"               /* MC_GLOBAL_MENU */
  61 #include "command.h"            /* cmdline */
  62 #include "layout.h"             /* get_current_type() */
  63 #include "ext.h"                /* regex_command() */
  64 #include "boxes.h"              /* cd_dialog() */
  65 #include "setup.h"              /* save_setup() */
  66 #include "profile.h"            /* PROFILE_NAME */
  67 #include "execute.h"            /* toggle_panels() */
  68
  69 #ifndef MAP_FILE
  70 #   define MAP_FILE 0
  71 #endif
  72
  73 #ifdef USE_INTERNAL_EDIT
  74 #   include "../edit/edit.h"
  75 #endif
  76
  77 /* If set and you don't have subshell support,then C-o will give you a shell */
  78 int output_starts_shell = 0;
  79
  80 /* If set, use the builtin editor */
  81 int use_internal_edit = 1;
  82
  83
  84 int
  85 view_file_at_line (const char *filename, int plain_view, int internal,
  86                    int start_line)
  87 {
  88     static const char *viewer = NULL;
  89     int move_dir = 0;
  90
  91
  92     if (plain_view) {
  93         int changed_hex_mode = 0;
  94         int changed_nroff_flag = 0;
  95         int changed_magic_flag = 0;
  96
  97         altered_hex_mode = 0;
  98         altered_nroff_flag = 0;
  99         altered_magic_flag = 0;
 100         if (default_hex_mode)
 101             changed_hex_mode = 1;
 102         if (default_nroff_flag)
 103             changed_nroff_flag = 1;
 104         if (default_magic_flag)
 105             changed_magic_flag = 1;
 106         default_hex_mode = 0;
 107         default_nroff_flag = 0;
 108         default_magic_flag = 0;
 109         view (0, filename, &move_dir, start_line);
 110         if (changed_hex_mode && !altered_hex_mode)
 111             default_hex_mode = 1;
 112         if (changed_nroff_flag && !altered_nroff_flag)
 113             default_nroff_flag = 1;
 114         if (changed_magic_flag && !altered_magic_flag)
 115             default_magic_flag = 1;
 116         repaint_screen ();
 117         return move_dir;
 118     }
 119     if (internal) {
 120         char view_entry[BUF_TINY];
 121
 122         if (start_line != 0)
 123             g_snprintf (view_entry, sizeof (view_entry), "View:%d",
 124                         start_line);
 125         else
 126             strcpy (view_entry, "View");
 127
 128         if (regex_command (filename, view_entry, &move_dir) == 0) {
 129             view (0, filename, &move_dir, start_line);
 130             repaint_screen ();
 131         }
 132     } else {
 133         if (!viewer) {
 134             viewer = getenv ("PAGER");
 135             if (!viewer)
 136                 viewer = "view";
 137         }
 138         execute_with_vfs_arg (viewer, filename);
 139     }
 140     return move_dir;
 141 }
 142
 143 /* view_file (filename, plain_view, internal)
 144  *
 145  * Inputs:
 146  *   filename:   The file name to view
 147  *   plain_view: If set does not do any fancy pre-processing (no filtering) and
 148  *               always invokes the internal viewer.
 149  *   internal:   If set uses the internal viewer, otherwise an external viewer.
 150  */
 151 int
 152 view_file (const char *filename, int plain_view, int internal)
 153 {
 154     return view_file_at_line (filename, plain_view, internal, 0);
 155 }
 156
 157 /* scan_for_file (panel, idx, direction)
 158  *
 159  * Inputs:
 160  *   panel:     pointer to the panel on which we operate
 161  *   idx:       starting file.
 162  *   direction: 1, or -1
 163  */
 164 static int scan_for_file (WPanel *panel, int idx, int direction)
 165 {
 166     int i = idx + direction;
 167
 168     while (i != idx){
 169         if (i < 0)
 170             i = panel->count - 1;
 171         if (i == panel->count)
 172             i = 0;
 173         if (!S_ISDIR (panel->dir.list [i].st.st_mode))
 174             return i;
 175         i += direction;
 176     }
 177     return i;
 178 }
 179
 180 /*
 181  * Run viewer (internal or external) on the currently selected file.
 182  * If normal is 1, force internal viewer and raw mode (used for F13).
 183  */
 184 static void
 185 do_view_cmd (int normal)
 186 {
 187     int dir, file_idx;
 188
 189     /* Directories are viewed by changing to them */
 190     if (S_ISDIR (selection (current_panel)->st.st_mode)
 191         || link_isdir (selection (current_panel))) {
 192         if (confirm_view_dir && (current_panel->marked || current_panel->dirs_marked)) {
 193             if (query_dialog
 194                 (_(" Confirmation "), _("Files tagged, want to cd?"), 0, 2,
 195                  _("&Yes"), _("&No")) != 0) {
 196                 return;
 197             }
 198         }
 199         if (!do_cd (selection (current_panel)->fname, cd_exact))
 200             message (1, MSG_ERROR, _("Cannot change directory"));
 201
 202         return;
 203
 204     }
 205
 206     file_idx = current_panel->selected;
 207     while (1) {
 208         char *filename;
 209
 210         filename = current_panel->dir.list[file_idx].fname;
 211
 212         dir = view_file (filename, normal, use_internal_view);
 213         if (dir == 0)
 214             break;
 215         file_idx = scan_for_file (current_panel, file_idx, dir);
 216     }
 217 }
 218
 219 /* Run user's preferred viewer on the currently selected file */
 220 void
 221 view_cmd (void)
 222 {
 223     do_view_cmd (0);
 224 }
 225
 226 /* Ask for file and run user's preferred viewer on it */
 227 void
 228 view_file_cmd (void)
 229 {
 230     char *filename;
 231
 232     filename =
 233         input_expand_dialog (_(" View file "), _(" Filename:"),
 234                              selection (current_panel)->fname);
 235     if (!filename)
 236         return;
 237
 238     view_file (filename, 0, use_internal_view);
 239     g_free (filename);
 240 }
 241
 242 /* Run plain internal viewer on the currently selected file */
 243 void
 244 view_simple_cmd (void)
 245 {
 246     do_view_cmd (1);
 247 }
 248
 249 void
 250 filtered_view_cmd (void)
 251 {
 252     char *command;
 253
 254     command =
 255         input_dialog (_(" Filtered view "),
 256                       _(" Filter command and arguments:"),
 257                       selection (current_panel)->fname);
 258     if (!command)
 259         return;
 260
 261     view (command, "", 0, 0);
 262
 263     g_free (command);
 264 }
 265
 266 void do_edit_at_line (const char *what, int start_line)
 267 {
 268     static const char *editor = NULL;
 269
 270 #ifdef USE_INTERNAL_EDIT
 271     if (use_internal_edit){
 272         edit_file (what, start_line);
 273         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 274         repaint_screen ();
 275         return;
 276     }
 277 #endif /* USE_INTERNAL_EDIT */
 278     if (!editor){
 279         editor = getenv ("EDITOR");
 280         if (!editor)
 281             editor = get_default_editor ();
 282     }
 283     execute_with_vfs_arg (editor, what);
 284     update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 285     repaint_screen ();
 286 }
 287
 288 static void
 289 do_edit (const char *what)
 290 {
 291     do_edit_at_line (what, 0);
 292 }
 293
 294 void
 295 edit_cmd (void)
 296 {
 297     if (regex_command (selection (current_panel)->fname, "Edit", 0) == 0)
 298         do_edit (selection (current_panel)->fname);
 299 }
 300
 301 void
 302 edit_cmd_new (void)
 303 {
 304     do_edit (NULL);
 305 }
 306
 307 /* Invoked by F5.  Copy, default to the other panel.  */
 308 void
 309 copy_cmd (void)
 310 {
 311     save_cwds_stat ();
 312     if (panel_operate (current_panel, OP_COPY, 0)) {
 313         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 314         repaint_screen ();
 315     }
 316 }
 317
 318 /* Invoked by F6.  Move/rename, default to the other panel, ignore marks.  */
 319 void ren_cmd (void)
 320 {
 321     save_cwds_stat ();
 322     if (panel_operate (current_panel, OP_MOVE, 0)){
 323         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 324         repaint_screen ();
 325     }
 326 }
 327
 328 /* Invoked by F15.  Copy, default to the same panel, ignore marks.  */
 329 void copy_cmd_local (void)
 330 {
 331     save_cwds_stat ();
 332     if (panel_operate (current_panel, OP_COPY, 1)){
 333         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 334         repaint_screen ();
 335     }
 336 }
 337
 338 /* Invoked by F16.  Move/rename, default to the same panel.  */
 339 void ren_cmd_local (void)
 340 {
 341     save_cwds_stat ();
 342     if (panel_operate (current_panel, OP_MOVE, 1)){
 343         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 344         repaint_screen ();
 345     }
 346 }
 347
 348 void
 349 mkdir_cmd (void)
 350 {
 351     char *tempdir;
 352     char *dir;
 353
 354     dir =
 355         input_expand_dialog (_("Create a new Directory"),
 356                              _(" Enter directory name:"), "");
 357
 358     if (!dir || !*dir)
 359         return;
 360
 361     if (dir[0] == '/' || dir[0] == '~')
 362         tempdir = g_strdup (dir);
 363     else
 364         tempdir = concat_dir_and_file (current_panel->cwd, dir);
 365     g_free (dir);
 366
 367     save_cwds_stat ();
 368     if (my_mkdir (tempdir, 0777) == 0) {
 369         update_panels (UP_OPTIMIZE, tempdir);
 370         repaint_screen ();
 371         select_item (current_panel);
 372         g_free (tempdir);
 373         return;
 374     }
 375     g_free (tempdir);
 376     message (1, MSG_ERROR, "  %s  ", unix_error_string (errno));
 377 }
 378
 379 void delete_cmd (void)
 380 {
 381     save_cwds_stat ();
 382
 383     if (panel_operate (current_panel, OP_DELETE, 0)){
 384         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 385         repaint_screen ();
 386     }
 387 }
 388
 389 /* Invoked by F18.  Remove selected file, regardless of marked files.  */
 390 void delete_cmd_local (void)
 391 {
 392     save_cwds_stat ();
 393
 394     if (panel_operate (current_panel, OP_DELETE, 1)){
 395         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 396         repaint_screen ();
 397     }
 398 }
 399
 400 void find_cmd (void)
 401 {
 402     do_find ();
 403 }
 404
 405 static void
 406 set_panel_filter_to (WPanel *p, char *allocated_filter_string)
 407 {
 408     g_free (p->filter);
 409     p->filter = 0;
 410
 411     if (!(allocated_filter_string [0] == '*' && allocated_filter_string [1] == 0))
 412         p->filter = allocated_filter_string;
 413     else
 414         g_free (allocated_filter_string);
 415     reread_cmd ();
 416 }
 417
 418 /* Set a given panel filter expression */
 419 static void
 420 set_panel_filter (WPanel *p)
 421 {
 422     char *reg_exp;
 423     const char *x;
 424
 425     x = p->filter ? p->filter : easy_patterns ? "*" : ".";
 426
 427     reg_exp = input_dialog_help (_(" Filter "),
 428                                  _(" Set expression for filtering filenames"),
 429                                  "[Filter...]", x);
 430     if (!reg_exp)
 431         return;
 432     set_panel_filter_to (p, reg_exp);
 433 }
 434
 435 /* Invoked from the left/right menus */
 436 void filter_cmd (void)
 437 {
 438     WPanel *p;
 439
 440     if (!SELECTED_IS_PANEL)
 441         return;
 442
 443     p = MENU_PANEL;
 444     set_panel_filter (p);
 445 }
 446
 447 void reread_cmd (void)
 448 {
 449     int flag;
 450
 451     if (get_current_type () == view_listing &&
 452         get_other_type () == view_listing)
 453         flag = strcmp (current_panel->cwd, other_panel->cwd) ? UP_ONLY_CURRENT : 0;
 454     else
 455         flag = UP_ONLY_CURRENT;
 456
 457     update_panels (UP_RELOAD|flag, UP_KEEPSEL);
 458     repaint_screen ();
 459 }
 460
 461 void reverse_selection_cmd (void)
 462 {
 463     file_entry *file;
 464     int i;
 465
 466     for (i = 0; i < current_panel->count; i++){
 467         file = &current_panel->dir.list [i];
 468         if (S_ISDIR (file->st.st_mode))
 469             continue;
 470         do_file_mark (current_panel, i, !file->f.marked);
 471     }
 472 }
 473
 474 static void
 475 select_unselect_cmd (const char *title, int cmd)
 476 {
 477     char *reg_exp, *reg_exp_t;
 478     int i;
 479     int c;
 480     int dirflag = 0;
 481
 482     reg_exp = input_dialog (title, "", easy_patterns ? "*" : ".");
 483     if (!reg_exp)
 484         return;
 485     if (!*reg_exp) {
 486         g_free (reg_exp);
 487         return;
 488     }
 489
 490     reg_exp_t = reg_exp;
 491
 492     /* Check if they specified a directory */
 493     if (*reg_exp_t == PATH_SEP) {
 494         dirflag = 1;
 495         reg_exp_t++;
 496     }
 497     if (reg_exp_t[strlen (reg_exp_t) - 1] == PATH_SEP) {
 498         dirflag = 1;
 499         reg_exp_t[strlen (reg_exp_t) - 1] = 0;
 500     }
 501
 502     for (i = 0; i < current_panel->count; i++) {
 503         if (!strcmp (current_panel->dir.list[i].fname, ".."))
 504             continue;
 505         if (S_ISDIR (current_panel->dir.list[i].st.st_mode)) {
 506             if (!dirflag)
 507                 continue;
 508         } else {
 509             if (dirflag)
 510                 continue;
 511         }
 512         c = regexp_match (reg_exp_t, current_panel->dir.list[i].fname,
 513                           match_file);
 514         if (c == -1) {
 515             message (1, MSG_ERROR, _("  Malformed regular expression  "));
 516             g_free (reg_exp);
 517             return;
 518         }
 519         if (c) {
 520             do_file_mark (current_panel, i, cmd);
 521         }
 522     }
 523     g_free (reg_exp);
 524 }
 525
 526 void select_cmd (void)
 527 {
 528     select_unselect_cmd (_(" Select "), 1);
 529 }
 530
 531 void unselect_cmd (void)
 532 {
 533     select_unselect_cmd (_(" Unselect "), 0);
 534 }
 535
 536 /* Check if the file exists */
 537 /* If not copy the default */
 538 static int
 539 check_for_default(char *default_file, char *file)
 540 {
 541     struct stat s;
 542     off_t  count = 0;
 543     double bytes = 0;
 544     FileOpContext *ctx;
 545
 546     if (mc_stat (file, &s)){
 547         if (mc_stat (default_file, &s)){
 548             return -1;
 549         }
 550         ctx = file_op_context_new (OP_COPY);
 551         file_op_context_create_ui (ctx, 0);
 552         copy_file_file (ctx, default_file, file, 1, &count, &bytes, 1);
 553         file_op_context_destroy (ctx);
 554     }
 555     return 0;
 556 }
 557
 558 void ext_cmd (void)
 559 {
 560     char *buffer;
 561     char *extdir;
 562     int  dir;
 563
 564     dir = 0;
 565     if (geteuid () == 0){
 566         dir = query_dialog (_("Extension file edit"),
 567                             _(" Which extension file you want to edit? "), 0, 2,
 568                             _("&User"), _("&System Wide"));
 569     }
 570     extdir = concat_dir_and_file (mc_home, MC_LIB_EXT);
 571
 572     if (dir == 0){
 573         buffer = concat_dir_and_file (home_dir, MC_USER_EXT);
 574         check_for_default (extdir, buffer);
 575         do_edit (buffer);
 576         g_free (buffer);
 577     } else if (dir == 1)
 578         do_edit (extdir);
 579
 580    g_free (extdir);
 581    flush_extension_file ();
 582 }
 583
 584 /* where  = 0 - do edit file menu for mc */
 585 /* where  = 1 - do edit file menu for mcedit */
 586 static void
 587 menu_edit_cmd (int where)
 588 {
 589     char *buffer;
 590     char *menufile;
 591     int dir = 0;
 592
 593     dir = query_dialog (
 594         _(" Menu edit "),
 595         _(" Which menu file do you want to edit? "),
 596         0, geteuid() ? 2 : 3,
 597         _("&Local"), _("&Home"), _("&System Wide")
 598     );
 599
 600     menufile = concat_dir_and_file (mc_home, where ? CEDIT_GLOBAL_MENU : MC_GLOBAL_MENU);
 601
 602     switch (dir) {
 603         case 0:
 604             buffer = g_strdup (where ? CEDIT_LOCAL_MENU : MC_LOCAL_MENU);
 605             check_for_default (menufile, buffer);
 606             break;
 607
 608         case 1:
 609             buffer = concat_dir_and_file (home_dir, where ? CEDIT_HOME_MENU : MC_HOME_MENU);
 610             check_for_default (menufile, buffer);
 611             break;
 612
 613         case 2:
 614             buffer = concat_dir_and_file (mc_home, where ? CEDIT_GLOBAL_MENU : MC_GLOBAL_MENU);
 615             break;
 616
 617         default:
 618            g_free (menufile);
 619             return;
 620     }
 621     do_edit (buffer);
 622         if (dir == 0)
 623                 chmod(buffer, 0600);
 624     g_free (buffer);
 625     g_free (menufile);
 626 }
 627
 628 void quick_chdir_cmd (void)
 629 {
 630     char *target;
 631
 632     target = hotlist_cmd (LIST_HOTLIST);
 633     if (!target)
 634         return;
 635
 636     if (get_current_type () == view_tree)
 637         tree_chdir (the_tree, target);
 638     else
 639         if (!do_cd (target, cd_exact))
 640             message (1, MSG_ERROR, _("Cannot change directory") );
 641     g_free (target);
 642 }
 643
 644 /* edit file menu for mc */
 645 void
 646 edit_mc_menu_cmd (void)
 647 {
 648     menu_edit_cmd (0);
 649 }
 650
 651 #ifdef USE_INTERNAL_EDIT
 652 /* edit file menu for mcedit */
 653 void
 654 edit_user_menu_cmd (void)
 655 {
 656     menu_edit_cmd (1);
 657 }
 658
 659 /* edit syntax file for mcedit */
 660 void
 661 edit_syntax_cmd (void)
 662 {
 663     char *buffer;
 664     char *extdir;
 665     int dir = 0;
 666
 667     if (geteuid () == 0) {
 668         dir =
 669             query_dialog (_("Syntax file edit"),
 670                           _(" Which syntax file you want to edit? "), 0, 2,
 671                           _("&User"), _("&System Wide"));
 672     }
 673     extdir = concat_dir_and_file (mc_home, "syntax" PATH_SEP_STR "Syntax");
 674
 675     if (dir == 0) {
 676         buffer = concat_dir_and_file (home_dir, SYNTAX_FILE);
 677         check_for_default (extdir, buffer);
 678         do_edit (buffer);
 679         g_free (buffer);
 680     } else if (dir == 1)
 681         do_edit (extdir);
 682
 683     g_free (extdir);
 684 }
 685 #endif
 686
 687 #ifdef USE_VFS
 688 void reselect_vfs (void)
 689 {
 690     char *target;
 691
 692     target = hotlist_cmd (LIST_VFSLIST);
 693     if (!target)
 694         return;
 695
 696     if (!do_cd (target, cd_exact))
 697         message (1, MSG_ERROR, _("Cannot change directory") );
 698     g_free (target);
 699 }
 700 #endif /* USE_VFS */
 701
 702 static int compare_files (char *name1, char *name2, off_t size)
 703 {
 704     int file1, file2;
 705     int result = -1;            /* Different by default */
 706
 707     file1 = open (name1, O_RDONLY);
 708     if (file1 >= 0){
 709         file2 = open (name2, O_RDONLY);
 710         if (file2 >= 0){
 711 #ifdef HAVE_MMAP
 712             char *data1, *data2;
 713             /* Ugly if jungle */
 714             data1 = mmap (0, size, PROT_READ, MAP_FILE | MAP_PRIVATE, file1, 0);
 715             if (data1 != (char*) -1){
 716                 data2 = mmap (0, size, PROT_READ, MAP_FILE | MAP_PRIVATE, file2, 0);
 717                 if (data2 != (char*) -1){
 718                     rotate_dash ();
 719                     result = memcmp (data1, data2, size);
 720                     munmap (data2, size);
 721                 }
 722                 munmap (data1, size);
 723             }
 724 #else
 725             /* Don't have mmap() :( Even more ugly :) */
 726             char buf1[BUFSIZ], buf2[BUFSIZ];
 727             int n1, n2;
 728             rotate_dash ();
 729             do
 730             {
 731                 while((n1 = read(file1,buf1,BUFSIZ)) == -1 && errno == EINTR);
 732                 while((n2 = read(file2,buf2,BUFSIZ)) == -1 && errno == EINTR);
 733             } while (n1 == n2 && n1 == BUFSIZ && !memcmp(buf1,buf2,BUFSIZ));
 734             result = (n1 != n2) || memcmp(buf1,buf2,n1);
 735 #endif /* !HAVE_MMAP */
 736             close (file2);
 737         }
 738         close (file1);
 739     }
 740     return result;
 741 }
 742
 743 enum CompareMode {
 744     compare_quick, compare_size_only, compare_thourough
 745 };
 746
 747 static void
 748 compare_dir (WPanel *panel, WPanel *other, enum CompareMode mode)
 749 {
 750     int i, j;
 751     char *src_name, *dst_name;
 752
 753     /* No marks by default */
 754     panel->marked = 0;
 755     panel->total = 0;
 756     panel->dirs_marked = 0;
 757
 758     /* Handle all files in the panel */
 759     for (i = 0; i < panel->count; i++){
 760         file_entry *source = &panel->dir.list[i];
 761
 762         /* Default: unmarked */
 763         file_mark (panel, i, 0);
 764
 765         /* Skip directories */
 766         if (S_ISDIR (source->st.st_mode))
 767             continue;
 768
 769         /* Search the corresponding entry from the other panel */
 770         for (j = 0; j < other->count; j++){
 771             if (strcmp (source->fname,
 772                         other->dir.list[j].fname) == 0)
 773                 break;
 774         }
 775         if (j >= other->count)
 776             /* Not found -> mark */
 777             do_file_mark (panel, i, 1);
 778         else {
 779             /* Found */
 780             file_entry *target = &other->dir.list[j];
 781
 782             if (mode != compare_size_only){
 783                 /* Older version is not marked */
 784                 if (source->st.st_mtime < target->st.st_mtime)
 785                     continue;
 786             }
 787
 788             /* Newer version with different size is marked */
 789             if (source->st.st_size != target->st.st_size){
 790                 do_file_mark (panel, i, 1);
 791                 continue;
 792
 793             }
 794             if (mode == compare_size_only)
 795                 continue;
 796
 797             if (mode == compare_quick){
 798                 /* Thorough compare off, compare only time stamps */
 799                 /* Mark newer version, don't mark version with the same date */
 800                 if (source->st.st_mtime > target->st.st_mtime){
 801                     do_file_mark (panel, i, 1);
 802                 }
 803                 continue;
 804             }
 805
 806             /* Thorough compare on, do byte-by-byte comparison */
 807             src_name = concat_dir_and_file (panel->cwd, source->fname);
 808             dst_name = concat_dir_and_file (other->cwd, target->fname);
 809             if (compare_files (src_name, dst_name, source->st.st_size))
 810                 do_file_mark (panel, i, 1);
 811             g_free (src_name);
 812             g_free (dst_name);
 813         }
 814     } /* for (i ...) */
 815 }
 816
 817 void
 818 compare_dirs_cmd (void)
 819 {
 820     int choice;
 821     enum CompareMode thorough_flag;
 822
 823     choice =
 824         query_dialog (_(" Compare directories "),
 825                       _(" Select compare method: "), 0, 3, _("&Quick"),
 826                       _("&Size only"), _("&Thorough"), _("&Cancel"));
 827
 828     if (choice < 0 || choice > 2)
 829         return;
 830     else
 831         thorough_flag = choice;
 832
 833     if (get_current_type () == view_listing
 834         && get_other_type () == view_listing) {
 835         compare_dir (current_panel, other_panel, thorough_flag);
 836         compare_dir (other_panel, current_panel, thorough_flag);
 837     } else {
 838         message (1, MSG_ERROR,
 839                  _(" Both panels should be in the "
 840                    "listing mode to use this command "));
 841     }
 842 }
 843
 844 void
 845 history_cmd (void)
 846 {
 847     Listbox *listbox;
 848     GList *current;
 849
 850     if (cmdline->need_push) {
 851         if (push_history (cmdline, cmdline->buffer) == 2)
 852             cmdline->need_push = 0;
 853     }
 854     if (!cmdline->history) {
 855         message (1, MSG_ERROR, _(" The command history is empty "));
 856         return;
 857     }
 858     current = g_list_first (cmdline->history);
 859     listbox = create_listbox_window (60, 10, _(" Command history "),
 860                                      "[Command Menu]");
 861     while (current) {
 862         LISTBOX_APPEND_TEXT (listbox, 0, (char *) current->data, current);
 863         current = g_list_next(current);
 864     }
 865     run_dlg (listbox->dlg);
 866     if (listbox->dlg->ret_value == B_CANCEL)
 867         current = NULL;
 868     else
 869         current = listbox->list->current->data;
 870     destroy_dlg (listbox->dlg);
 871     g_free (listbox);
 872
 873     if (!current)
 874         return;
 875     cmdline->history = current;
 876     assign_text (cmdline, (char *) current->data);
 877     update_input (cmdline, 1);
 878 }
 879
 880 void swap_cmd (void)
 881 {
 882     swap_panels ();
 883     touchwin (stdscr);
 884     repaint_screen ();
 885 }
 886
 887 void
 888 view_other_cmd (void)
 889 {
 890     static int message_flag = TRUE;
 891
 892     if (!xterm_flag && !console_flag && !use_subshell && !output_starts_shell) {
 893         if (message_flag)
 894             message (1, MSG_ERROR,
 895                      _(" Not an xterm or Linux console; \n"
 896                        " the panels cannot be toggled. "));
 897         message_flag = FALSE;
 898     } else {
 899         toggle_panels ();
 900     }
 901 }
 902
 903 static void
 904 do_link (int symbolic_link, const char *fname)
 905 {
 906     char *dest = NULL, *src = NULL;
 907
 908     if (!symbolic_link) {
 909         src = g_strdup_printf (_("Link %s to:"), name_trunc (fname, 46));
 910         dest = input_expand_dialog (_(" Link "), src, "");
 911         if (!dest || !*dest)
 912             goto cleanup;
 913         save_cwds_stat ();
 914         if (-1 == mc_link (fname, dest))
 915             message (1, MSG_ERROR, _(" link: %s "),
 916                      unix_error_string (errno));
 917     } else {
 918         char *s;
 919         char *d;
 920
 921         /* suggest the full path for symlink */
 922         s = concat_dir_and_file (current_panel->cwd, fname);
 923
 924         if (get_other_type () == view_listing) {
 925             d = concat_dir_and_file (other_panel->cwd, fname);
 926         } else {
 927             d = g_strdup (fname);
 928         }
 929
 930         symlink_dialog (s, d, &dest, &src);
 931         g_free (d);
 932         g_free (s);
 933
 934         if (!dest || !*dest || !src || !*src)
 935             goto cleanup;
 936         save_cwds_stat ();
 937         if (-1 == mc_symlink (dest, src))
 938             message (1, MSG_ERROR, _(" symlink: %s "),
 939                      unix_error_string (errno));
 940     }
 941     update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 942     repaint_screen ();
 943
 944 cleanup:
 945     g_free (src);
 946     g_free (dest);
 947 }
 948
 949 void link_cmd (void)
 950 {
 951     do_link (0, selection (current_panel)->fname);
 952 }
 953
 954 void symlink_cmd (void)
 955 {
 956     char *filename = NULL;
 957     filename = selection (current_panel)->fname;
 958
 959     if (filename) {
 960         do_link (1, filename);
 961     }
 962 }
 963
 964 void edit_symlink_cmd (void)
 965 {
 966     if (S_ISLNK (selection (current_panel)->st.st_mode)) {
 967         char buffer [MC_MAXPATHLEN];
 968         char *p = NULL;
 969         int i;
 970         char *dest, *q;
 971
 972         p = selection (current_panel)->fname;
 973
 974         q = g_strdup_printf (_(" Symlink `%s\' points to: "), name_trunc (p, 32));
 975
 976         i = readlink (p, buffer, MC_MAXPATHLEN - 1);
 977         if (i > 0) {
 978             buffer [i] = 0;
 979             dest = input_expand_dialog (_(" Edit symlink "), q, buffer);
 980             if (dest) {
 981                 if (*dest && strcmp (buffer, dest)) {
 982                     save_cwds_stat ();
 983                     if (-1 == mc_unlink (p)){
 984                         message (1, MSG_ERROR, _(" edit symlink, unable to remove %s: %s "),
 985                                  p, unix_error_string (errno));
 986                     } else {
 987                             if (-1 == mc_symlink (dest, p))
 988                                     message (1, MSG_ERROR, _(" edit symlink: %s "),
 989                                              unix_error_string (errno));
 990                     }
 991                     update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 992                     repaint_screen ();
 993                 }
 994                 g_free (dest);
 995             }
 996         }
 997         g_free (q);
 998     } else {
 999         message (1, MSG_ERROR, _("`%s' is not a symbolic link"),
1000                  selection (current_panel)->fname);
1001     }
1002 }
1003
1004 void help_cmd (void)
1005 {
1006    interactive_display (NULL, "[main]");
1007 }
1008
1009 void
1010 user_file_menu_cmd (void)
1011 {
1012     user_menu_cmd (NULL);
1013 }
1014
1015 /* partly taken from dcigettext.c, returns "" for default locale */
1016 /* value should be freed by calling function g_free() */
1017 char *guess_message_value (void)
1018 {
1019     static const char * const var[] = {
1020         /* The highest priority value is the `LANGUAGE' environment
1021         variable.  This is a GNU extension.  */
1022         "LANGUAGE",
1023         /* Setting of LC_ALL overwrites all other.  */
1024         "LC_ALL",
1025         /* Next comes the name of the desired category.  */
1026         "LC_MESSAGES",
1027         /* Last possibility is the LANG environment variable.  */
1028         "LANG",
1029         /* NULL exit loops */
1030         NULL
1031     };
1032
1033     unsigned i = 0;
1034     const char *locale = NULL;
1035
1036     while (var[i] != NULL) {
1037         locale = getenv (var[i]);
1038         if (locale != NULL && locale[0] != '\0')
1039             break;
1040         i++;
1041     }
1042
1043     if (locale == NULL)
1044         locale = "";
1045
1046     return g_strdup (locale);
1047 }
1048
1049 /*
1050  * Return a random hint.  If force is not 0, ignore the timeout.
1051  */
1052 char *
1053 get_random_hint (int force)
1054 {
1055     char *data, *result, *eol;
1056     int len;
1057     int start;
1058     static int last_sec;
1059     static struct timeval tv;
1060
1061     /* Do not change hints more often than one minute */
1062     gettimeofday (&tv, NULL);
1063     if (!force && !(tv.tv_sec > last_sec + 60))
1064         return g_strdup ("");
1065     last_sec = tv.tv_sec;
1066
1067     data = load_mc_home_file (MC_HINT, NULL);
1068     if (!data)
1069         return 0;
1070
1071     /* get a random entry */
1072     srand (tv.tv_sec);
1073     len = strlen (data);
1074     start = rand () % len;
1075
1076     for (; start; start--) {
1077         if (data[start] == '\n') {
1078             start++;
1079             break;
1080         }
1081     }
1082     eol = strchr (&data[start], '\n');
1083     if (eol)
1084         *eol = 0;
1085     result = g_strdup (&data[start]);
1086     g_free (data);
1087     return result;
1088 }
1089
1090 #if defined(USE_NETCODE) || defined(USE_EXT2FSLIB)
1091 static void
1092 nice_cd (const char *text, const char *xtext, const char *help, const char *prefix, int to_home)
1093 {
1094     char *machine;
1095     char *cd_path;
1096
1097     if (!SELECTED_IS_PANEL)
1098         return;
1099
1100     machine = input_dialog_help (text,
1101                                  xtext,
1102                                  help, "");
1103     if (!machine)
1104         return;
1105
1106     to_home = 0;        /* FIXME: how to solve going to home nicely? /~/ is
1107                            ugly as hell and leads to problems in vfs layer */
1108
1109     if (strncmp (prefix, machine, strlen (prefix)) == 0)
1110         cd_path = g_strconcat (machine, to_home ? "/~/" : (char *) NULL, (char *) NULL);
1111     else
1112         cd_path = g_strconcat (prefix, machine, to_home ? "/~/" : (char *) NULL, (char *) NULL);
1113
1114     if (do_panel_cd (MENU_PANEL, cd_path, 0))
1115         directory_history_add (MENU_PANEL, (MENU_PANEL)->cwd);
1116     else
1117         message (1, MSG_ERROR, _(" Cannot chdir to %s "), cd_path);
1118     g_free (cd_path);
1119     g_free (machine);
1120 }
1121 #endif /* USE_NETCODE || USE_EXT2FSLIB */
1122
1123
1124 #ifdef USE_NETCODE
1125
1126 static const char *machine_str = N_(" Enter machine name (F1 for details): ");
1127
1128 #ifdef WITH_MCFS
1129 void netlink_cmd (void)
1130 {
1131     nice_cd (_(" Link to a remote machine "), _(machine_str),
1132              "[Network File System]", "/#mc:", 1);
1133 }
1134 #endif /* WITH_MCFS */
1135
1136 void ftplink_cmd (void)
1137 {
1138     nice_cd (_(" FTP to machine "), _(machine_str),
1139              "[FTP File System]", "/#ftp:", 1);
1140 }
1141
1142 void fishlink_cmd (void)
1143 {
1144     nice_cd (_(" Shell link to machine "), _(machine_str),
1145              "[FIle transfer over SHell filesystem]", "/#sh:", 1);
1146 }
1147
1148 #ifdef WITH_SMBFS
1149 void smblink_cmd (void)
1150 {
1151     nice_cd (_(" SMB link to machine "), _(machine_str),
1152              "[SMB File System]", "/#smb:", 0);
1153 }
1154 #endif /* WITH_SMBFS */
1155 #endif /* USE_NETCODE */
1156
1157 #ifdef USE_EXT2FSLIB
1158 void undelete_cmd (void)
1159 {
1160     nice_cd (_(" Undelete files on an ext2 file system "),
1161              _(" Enter device (without /dev/) to undelete\n "
1162                "  files on: (F1 for details)"),
1163              "[Undelete File System]", "/#undel:", 0);
1164 }
1165 #endif /* USE_EXT2FSLIB */
1166
1167 void quick_cd_cmd (void)
1168 {
1169     char *p = cd_dialog ();
1170
1171     if (p && *p) {
1172         char *q = g_strconcat ("cd ", p, (char *) NULL);
1173
1174         do_cd_command (q);
1175         g_free (q);
1176     }
1177     g_free (p);
1178 }
1179
1180 void
1181 dirsizes_cmd (void)
1182 {
1183     WPanel *panel = current_panel;
1184     int i;
1185     off_t marked;
1186     double total;
1187
1188     for (i = 0; i < panel->count; i++)
1189         if (S_ISDIR (panel->dir.list [i].st.st_mode) &&
1190                  ((panel->dirs_marked && panel->dir.list [i].f.marked) ||
1191                    !panel->dirs_marked) &&
1192                  strcmp (panel->dir.list [i].fname, "..") != 0) {
1193             total = 0.0l;
1194             compute_dir_size (panel->dir.list [i].fname, &marked, &total);
1195             panel->dir.list [i].st.st_size = (off_t) total;
1196             panel->dir.list [i].f.dir_size_computed = 1;
1197         }
1198
1199     recalculate_panel_summary (panel);
1200     panel->dirty = 1;
1201 }
1202
1203 void
1204 save_setup_cmd (void)
1205 {
1206     char *str;
1207
1208     save_setup ();
1209     sync_profiles ();
1210     str = g_strconcat ( _(" Setup saved to ~/"), PROFILE_NAME, (char *) NULL);
1211
1212     message (0, _(" Setup "), str);
1213     g_free (str);
1214 }
1215
1216 static void
1217 configure_panel_listing (WPanel *p, int view_type, int use_msformat, char *user, char *status)
1218 {
1219     p->user_mini_status = use_msformat;
1220     p->list_type = view_type;
1221
1222     if (view_type == list_user || use_msformat){
1223         g_free (p->user_format);
1224         p->user_format = user;
1225
1226         g_free (p->user_status_format [view_type]);
1227         p->user_status_format [view_type] = status;
1228
1229         set_panel_formats (p);
1230     }
1231     else {
1232         g_free (user);
1233         g_free (status);
1234     }
1235
1236     set_panel_formats (p);
1237     do_refresh ();
1238 }
1239
1240 void
1241 info_cmd_no_menu (void)
1242 {
1243     if (get_display_type (0) == view_info)
1244         set_display_type (0, view_listing);
1245     else if (get_display_type (1) == view_info)
1246         set_display_type (1, view_listing);
1247     else
1248         set_display_type (current_panel == left_panel ? 1 : 0, view_info);
1249 }
1250
1251 void
1252 quick_cmd_no_menu (void)
1253 {
1254     if (get_display_type (0) == view_quick)
1255         set_display_type (0, view_listing);
1256     else if (get_display_type (1) == view_quick)
1257         set_display_type (1, view_listing);
1258     else
1259         set_display_type (current_panel == left_panel ? 1 : 0, view_quick);
1260 }
1261
1262 static void
1263 switch_to_listing (int panel_index)
1264 {
1265     if (get_display_type (panel_index) != view_listing)
1266         set_display_type (panel_index, view_listing);
1267 }
1268
1269 void
1270 listing_cmd (void)
1271 {
1272     int   view_type, use_msformat;
1273     char  *user, *status;
1274     WPanel *p;
1275     int   display_type;
1276
1277     display_type = get_display_type (MENU_PANEL_IDX);
1278     if (display_type == view_listing)
1279         p = MENU_PANEL_IDX == 0 ? left_panel : right_panel;
1280     else
1281         p = 0;
1282
1283     view_type = display_box (p, &user, &status, &use_msformat, MENU_PANEL_IDX);
1284
1285     if (view_type == -1)
1286         return;
1287
1288     switch_to_listing (MENU_PANEL_IDX);
1289
1290     p = MENU_PANEL_IDX == 0 ? left_panel : right_panel;
1291
1292     configure_panel_listing (p, view_type, use_msformat, user, status);
1293 }
1294
1295 void
1296 tree_cmd (void)
1297 {
1298     set_display_type (MENU_PANEL_IDX, view_tree);
1299 }
1300
1301 void
1302 info_cmd (void)
1303 {
1304     set_display_type (MENU_PANEL_IDX, view_info);
1305 }
1306
1307 void
1308 quick_view_cmd (void)
1309 {
1310     if ((WPanel *) get_panel_widget (MENU_PANEL_IDX) == current_panel)
1311         change_panel ();
1312     set_display_type (MENU_PANEL_IDX, view_quick);
1313 }
1314
1315 /* Handle the tree internal listing modes switching */
1316 static int
1317 set_basic_panel_listing_to (int panel_index, int listing_mode)
1318 {
1319     WPanel *p = (WPanel *) get_panel_widget (panel_index);
1320
1321     switch_to_listing (panel_index);
1322     p->list_type = listing_mode;
1323     if (set_panel_formats (p))
1324         return 0;
1325
1326     do_refresh ();
1327     return 1;
1328 }
1329
1330 void
1331 toggle_listing_cmd (void)
1332 {
1333     int current = get_current_index ();
1334     WPanel *p = (WPanel *) get_panel_widget (current);
1335     int list_mode = p->list_type;
1336     int m;
1337
1338     switch (list_mode){
1339     case list_full:
1340     case list_brief:
1341         m = list_long;
1342         break;
1343     case list_long:
1344         m = list_user;
1345         break;
1346     default:
1347         m = list_full;
1348     }
1349     if (set_basic_panel_listing_to (current, m))
1350         return;
1351     set_basic_panel_listing_to (current, list_full);
1352 }
1353