src/filemanager/cmd.c

   1 /*
   2    Routines invoked by a function key
   3    They normally operate on the current panel.
   4
   5    Copyright (C) 1994, 1995, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
   6    2005, 2006, 2007, 2009, 2011
   7    The Free Software Foundation, Inc.
   8
   9    This file is part of the Midnight Commander.
  10
  11    The Midnight Commander is free software: you can redistribute it
  12    and/or modify it under the terms of the GNU General Public License as
  13    published by the Free Software Foundation, either version 3 of the License,
  14    or (at your option) any later version.
  15
  16    The Midnight Commander is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 /** \file cmd.c
  26  *  \brief Source: routines invoked by a function key
  27  *
  28  *  They normally operate on the current panel.
  29  */
  30
  31 #include <config.h>
  32
  33 #include <errno.h>
  34 #include <stdio.h>
  35 #include <string.h>
  36
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39 #ifdef HAVE_MMAP
  40 #include <sys/mman.h>
  41 #endif
  42 #ifdef ENABLE_VFS_NET
  43 #include <netdb.h>
  44 #endif
  45 #include <unistd.h>
  46 #include <stdlib.h>
  47 #include <fcntl.h>
  48 #include <pwd.h>
  49 #include <grp.h>
  50 #include <sys/time.h>
  51
  52 #include "lib/global.h"
  53
  54 #include "lib/tty/tty.h"        /* LINES, tty_touch_screen() */
  55 #include "lib/tty/key.h"        /* ALT() macro */
  56 #include "lib/tty/win.h"        /* do_enter_ca_mode() */
  57 #include "lib/mcconfig.h"
  58 #include "lib/search.h"
  59 #include "lib/filehighlight.h"  /* MC_FHL_INI_FILE */
  60 #include "lib/vfs/vfs.h"
  61 #include "lib/fileloc.h"
  62 #include "lib/strutil.h"
  63 #include "lib/util.h"
  64 #include "lib/widget.h"
  65 #include "lib/keybind.h"        /* CK_Down, CK_History */
  66 #include "lib/event.h"          /* mc_event_raise() */
  67
  68 #include "src/viewer/mcviewer.h"
  69 #include "src/setup.h"
  70 #include "src/execute.h"        /* toggle_panels() */
  71 #include "src/history.h"
  72 #include "src/util.h"           /* check_for_default() */
  73
  74 #ifdef USE_INTERNAL_EDIT
  75 #include "src/editor/edit.h"
  76 #endif
  77
  78 #ifdef USE_DIFF_VIEW
  79 #include "src/diffviewer/ydiff.h"
  80 #endif
  81
  82 #include "fileopctx.h"
  83 #include "file.h"               /* file operation routines */
  84 #include "find.h"               /* find_file() */
  85 #include "filenot.h"
  86 #include "hotlist.h"            /* hotlist_show() */
  87 #include "panel.h"              /* WPanel */
  88 #include "tree.h"               /* tree_chdir() */
  89 #include "midnight.h"           /* change_panel() */
  90 #include "usermenu.h"           /* MC_GLOBAL_MENU */
  91 #include "command.h"            /* cmdline */
  92 #include "layout.h"             /* get_current_type() */
  93 #include "ext.h"                /* regex_command() */
  94 #include "boxes.h"              /* cd_dialog() */
  95 #include "dir.h"
  96
  97 #include "cmd.h"                /* Our definitions */
  98
  99 /*** global variables ****************************************************************************/
 100
 101 int select_flags = SELECT_MATCH_CASE | SELECT_SHELL_PATTERNS;
 102
 103 /*** file scope macro definitions ****************************************************************/
 104
 105 #ifndef MAP_FILE
 106 #define MAP_FILE 0
 107 #endif
 108
 109 /*** file scope type declarations ****************************************************************/
 110
 111 enum CompareMode
 112 {
 113     compare_quick, compare_size_only, compare_thourough
 114 };
 115
 116 /*** file scope variables ************************************************************************/
 117
 118 #ifdef ENABLE_VFS_NET
 119 static const char *machine_str = N_("Enter machine name (F1 for details):");
 120 #endif /* ENABLE_VFS_NET */
 121
 122 /*** file scope functions ************************************************************************/
 123 /* --------------------------------------------------------------------------------------------- */
 124
 125 /** scan_for_file (panel, idx, direction)
 126  *
 127  * Inputs:
 128  *   panel:     pointer to the panel on which we operate
 129  *   idx:       starting file.
 130  *   direction: 1, or -1
 131  */
 132
 133 static int
 134 scan_for_file (WPanel * panel, int idx, int direction)
 135 {
 136     int i = idx + direction;
 137
 138     while (i != idx)
 139     {
 140         if (i < 0)
 141             i = panel->count - 1;
 142         if (i == panel->count)
 143             i = 0;
 144         if (!S_ISDIR (panel->dir.list[i].st.st_mode))
 145             return i;
 146         i += direction;
 147     }
 148     return i;
 149 }
 150
 151 /* --------------------------------------------------------------------------------------------- */
 152 /**
 153  * Run viewer (internal or external) on the currently selected file.
 154  * If normal is TRUE, force internal viewer and raw mode (used for F13).
 155  */
 156 static void
 157 do_view_cmd (gboolean normal)
 158 {
 159     /* Directories are viewed by changing to them */
 160     if (S_ISDIR (selection (current_panel)->st.st_mode) || link_isdir (selection (current_panel)))
 161     {
 162         vfs_path_t *fname_vpath;
 163
 164         if (confirm_view_dir && (current_panel->marked || current_panel->dirs_marked))
 165         {
 166             if (query_dialog
 167                 (_("Confirmation"), _("Files tagged, want to cd?"), D_NORMAL, 2,
 168                  _("&Yes"), _("&No")) != 0)
 169             {
 170                 return;
 171             }
 172         }
 173         fname_vpath = vfs_path_from_str (selection (current_panel)->fname);
 174         if (!do_cd (fname_vpath, cd_exact))
 175             message (D_ERROR, MSG_ERROR, _("Cannot change directory"));
 176         vfs_path_free (fname_vpath);
 177     }
 178     else
 179     {
 180         int file_idx;
 181
 182         file_idx = current_panel->selected;
 183
 184         while (TRUE)
 185         {
 186             vfs_path_t *filename_vpath;
 187             int dir;
 188
 189             filename_vpath = vfs_path_from_str (current_panel->dir.list[file_idx].fname);
 190             dir = view_file (filename_vpath, normal, use_internal_view);
 191             vfs_path_free (filename_vpath);
 192             if (dir == 0)
 193                 break;
 194             file_idx = scan_for_file (current_panel, file_idx, dir);
 195         }
 196     }
 197
 198     repaint_screen ();
 199 }
 200
 201 /* --------------------------------------------------------------------------------------------- */
 202
 203 static inline void
 204 do_edit (const vfs_path_t * what_vpath)
 205 {
 206     do_edit_at_line (what_vpath, use_internal_edit, 0);
 207 }
 208
 209 /* --------------------------------------------------------------------------------------------- */
 210
 211 static void
 212 set_panel_filter_to (WPanel * p, char *allocated_filter_string)
 213 {
 214     g_free (p->filter);
 215     p->filter = 0;
 216
 217     if (!(allocated_filter_string[0] == '*' && allocated_filter_string[1] == 0))
 218         p->filter = allocated_filter_string;
 219     else
 220         g_free (allocated_filter_string);
 221     reread_cmd ();
 222 }
 223
 224 /* --------------------------------------------------------------------------------------------- */
 225 /** Set a given panel filter expression */
 226
 227 static void
 228 set_panel_filter (WPanel * p)
 229 {
 230     char *reg_exp;
 231     const char *x;
 232
 233     x = p->filter ? p->filter : easy_patterns ? "*" : ".";
 234
 235     reg_exp = input_dialog_help (_("Filter"),
 236                                  _("Set expression for filtering filenames"),
 237                                  "[Filter...]", MC_HISTORY_FM_PANEL_FILTER, x, FALSE);
 238     if (!reg_exp)
 239         return;
 240     set_panel_filter_to (p, reg_exp);
 241 }
 242
 243 /* --------------------------------------------------------------------------------------------- */
 244
 245 static void
 246 select_unselect_cmd (const char *title, const char *history_name, gboolean do_select)
 247 {
 248     /* dialog sizes */
 249     const int DX = 50;
 250     const int DY = 7;
 251
 252     int files_only = (select_flags & SELECT_FILES_ONLY) != 0;
 253     int case_sens = (select_flags & SELECT_MATCH_CASE) != 0;
 254     int shell_patterns = (select_flags & SELECT_SHELL_PATTERNS) != 0;
 255
 256     char *reg_exp;
 257     mc_search_t *search;
 258     int i;
 259
 260     QuickWidget quick_widgets[] = {
 261         QUICK_CHECKBOX (3, DX, DY - 3, DY, N_("&Using shell patterns"), &shell_patterns),
 262         QUICK_CHECKBOX (DX / 2 + 1, DX, DY - 4, DY, N_("&Case sensitive"), &case_sens),
 263         QUICK_CHECKBOX (3, DX, DY - 4, DY, N_("&Files only"), &files_only),
 264         QUICK_INPUT (3, DX, DY - 5, DY, INPUT_LAST_TEXT, DX - 6, 0, history_name, &reg_exp),
 265         QUICK_END
 266     };
 267
 268     QuickDialog quick_dlg = {
 269         DX, DY, -1, -1, title,
 270         "[Select/Unselect Files]", quick_widgets, NULL, FALSE
 271     };
 272
 273     if (quick_dialog (&quick_dlg) == B_CANCEL)
 274         return;
 275
 276     if (reg_exp == NULL)
 277         return;
 278     if (!*reg_exp)
 279     {
 280         g_free (reg_exp);
 281         return;
 282     }
 283     search = mc_search_new (reg_exp, -1);
 284     search->search_type = (shell_patterns != 0) ? MC_SEARCH_T_GLOB : MC_SEARCH_T_REGEX;
 285     search->is_entire_line = TRUE;
 286     search->is_case_sensitive = case_sens != 0;
 287
 288     for (i = 0; i < current_panel->count; i++)
 289     {
 290         if (strcmp (current_panel->dir.list[i].fname, "..") == 0)
 291             continue;
 292         if (S_ISDIR (current_panel->dir.list[i].st.st_mode) && files_only != 0)
 293             continue;
 294
 295         if (mc_search_run (search, current_panel->dir.list[i].fname,
 296                            0, current_panel->dir.list[i].fnamelen, NULL))
 297             do_file_mark (current_panel, i, do_select);
 298     }
 299
 300     mc_search_free (search);
 301     g_free (reg_exp);
 302
 303     /* result flags */
 304     select_flags = 0;
 305     if (case_sens != 0)
 306         select_flags |= SELECT_MATCH_CASE;
 307     if (files_only != 0)
 308         select_flags |= SELECT_FILES_ONLY;
 309     if (shell_patterns != 0)
 310         select_flags |= SELECT_SHELL_PATTERNS;
 311 }
 312
 313 /* --------------------------------------------------------------------------------------------- */
 314
 315 static int
 316 compare_files (const vfs_path_t * vpath1, const vfs_path_t * vpath2, off_t size)
 317 {
 318     int file1, file2;
 319     char *name;
 320     int result = -1;            /* Different by default */
 321
 322     if (size == 0)
 323         return 0;
 324
 325     name = vfs_path_to_str (vpath1);
 326     file1 = open (name, O_RDONLY);
 327     g_free (name);
 328     if (file1 >= 0)
 329     {
 330         name = vfs_path_to_str (vpath2);
 331         file2 = open (name, O_RDONLY);
 332         g_free (name);
 333         if (file2 >= 0)
 334         {
 335 #ifdef HAVE_MMAP
 336             char *data1, *data2;
 337             /* Ugly if jungle */
 338             data1 = mmap (0, size, PROT_READ, MAP_FILE | MAP_PRIVATE, file1, 0);
 339             if (data1 != (char *) -1)
 340             {
 341                 data2 = mmap (0, size, PROT_READ, MAP_FILE | MAP_PRIVATE, file2, 0);
 342                 if (data2 != (char *) -1)
 343                 {
 344                     rotate_dash ();
 345                     result = memcmp (data1, data2, size);
 346                     munmap (data2, size);
 347                 }
 348                 munmap (data1, size);
 349             }
 350 #else
 351             /* Don't have mmap() :( Even more ugly :) */
 352             char buf1[BUFSIZ], buf2[BUFSIZ];
 353             int n1, n2;
 354             rotate_dash ();
 355             do
 356             {
 357                 while ((n1 = read (file1, buf1, BUFSIZ)) == -1 && errno == EINTR);
 358                 while ((n2 = read (file2, buf2, BUFSIZ)) == -1 && errno == EINTR);
 359             }
 360             while (n1 == n2 && n1 == BUFSIZ && !memcmp (buf1, buf2, BUFSIZ));
 361             result = (n1 != n2) || memcmp (buf1, buf2, n1);
 362 #endif /* !HAVE_MMAP */
 363             close (file2);
 364         }
 365         close (file1);
 366     }
 367     return result;
 368 }
 369
 370 /* --------------------------------------------------------------------------------------------- */
 371
 372 static void
 373 compare_dir (WPanel * panel, WPanel * other, enum CompareMode mode)
 374 {
 375     int i, j;
 376
 377     /* No marks by default */
 378     panel->marked = 0;
 379     panel->total = 0;
 380     panel->dirs_marked = 0;
 381
 382     /* Handle all files in the panel */
 383     for (i = 0; i < panel->count; i++)
 384     {
 385         file_entry *source = &panel->dir.list[i];
 386
 387         /* Default: unmarked */
 388         file_mark (panel, i, 0);
 389
 390         /* Skip directories */
 391         if (S_ISDIR (source->st.st_mode))
 392             continue;
 393
 394         /* Search the corresponding entry from the other panel */
 395         for (j = 0; j < other->count; j++)
 396         {
 397             if (strcmp (source->fname, other->dir.list[j].fname) == 0)
 398                 break;
 399         }
 400         if (j >= other->count)
 401             /* Not found -> mark */
 402             do_file_mark (panel, i, 1);
 403         else
 404         {
 405             /* Found */
 406             file_entry *target = &other->dir.list[j];
 407
 408             if (mode != compare_size_only)
 409             {
 410                 /* Older version is not marked */
 411                 if (source->st.st_mtime < target->st.st_mtime)
 412                     continue;
 413             }
 414
 415             /* Newer version with different size is marked */
 416             if (source->st.st_size != target->st.st_size)
 417             {
 418                 do_file_mark (panel, i, 1);
 419                 continue;
 420
 421             }
 422             if (mode == compare_size_only)
 423                 continue;
 424
 425             if (mode == compare_quick)
 426             {
 427                 /* Thorough compare off, compare only time stamps */
 428                 /* Mark newer version, don't mark version with the same date */
 429                 if (source->st.st_mtime > target->st.st_mtime)
 430                 {
 431                     do_file_mark (panel, i, 1);
 432                 }
 433                 continue;
 434             }
 435
 436             /* Thorough compare on, do byte-by-byte comparison */
 437             {
 438                 vfs_path_t *src_name, *dst_name;
 439
 440                 src_name = vfs_path_append_new (panel->cwd_vpath, source->fname, NULL);
 441                 dst_name = vfs_path_append_new (other->cwd_vpath, target->fname, NULL);
 442                 if (compare_files (src_name, dst_name, source->st.st_size))
 443                     do_file_mark (panel, i, 1);
 444                 vfs_path_free (src_name);
 445                 vfs_path_free (dst_name);
 446             }
 447         }
 448     }                           /* for (i ...) */
 449 }
 450
 451 /* --------------------------------------------------------------------------------------------- */
 452
 453 static void
 454 do_link (link_type_t link_type, const char *fname)
 455 {
 456     char *dest = NULL, *src = NULL;
 457     vfs_path_t *fname_vpath, *dest_vpath = NULL;
 458
 459     fname_vpath = vfs_path_from_str (fname);
 460     if (link_type == LINK_HARDLINK)
 461     {
 462         src = g_strdup_printf (_("Link %s to:"), str_trunc (fname, 46));
 463         dest = input_expand_dialog (_("Link"), src, MC_HISTORY_FM_LINK, "");
 464         if (!dest || !*dest)
 465             goto cleanup;
 466         save_cwds_stat ();
 467         dest_vpath = vfs_path_from_str (dest);
 468         if (-1 == mc_link (fname_vpath, dest_vpath))
 469             message (D_ERROR, MSG_ERROR, _("link: %s"), unix_error_string (errno));
 470     }
 471     else
 472     {
 473         vfs_path_t *s, *d;
 474
 475         /* suggest the full path for symlink, and either the full or
 476            relative path to the file it points to  */
 477         s = vfs_path_append_new (current_panel->cwd_vpath, fname, NULL);
 478
 479         if (get_other_type () == view_listing)
 480             d = vfs_path_append_new (other_panel->cwd_vpath, fname, NULL);
 481         else
 482             d = vfs_path_from_str (fname);
 483
 484         if (link_type == LINK_SYMLINK_RELATIVE)
 485         {
 486             char *s_str;
 487
 488             s_str = diff_two_paths (other_panel->cwd_vpath, s);
 489             vfs_path_free (s);
 490             s = vfs_path_from_str_flags (s_str, VPF_NO_CANON);
 491             g_free (s_str);
 492         }
 493
 494         symlink_dialog (s, d, &dest, &src);
 495         vfs_path_free (d);
 496         vfs_path_free (s);
 497
 498         if (!dest || !*dest || !src || !*src)
 499             goto cleanup;
 500         save_cwds_stat ();
 501
 502         dest_vpath = vfs_path_from_str_flags (dest, VPF_NO_CANON);
 503
 504         s = vfs_path_from_str (src);
 505         if (mc_symlink (dest_vpath, s) == -1)
 506             message (D_ERROR, MSG_ERROR, _("symlink: %s"), unix_error_string (errno));
 507         vfs_path_free (s);
 508     }
 509
 510     update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 511     repaint_screen ();
 512
 513   cleanup:
 514     vfs_path_free (fname_vpath);
 515     vfs_path_free (dest_vpath);
 516     g_free (src);
 517     g_free (dest);
 518 }
 519
 520 /* --------------------------------------------------------------------------------------------- */
 521
 522 #if defined(ENABLE_VFS_UNDELFS) || defined(ENABLE_VFS_NET)
 523 static void
 524 nice_cd (const char *text, const char *xtext, const char *help,
 525          const char *history_name, const char *prefix, int to_home, gboolean strip_password)
 526 {
 527     char *machine;
 528     char *cd_path;
 529
 530     if (!SELECTED_IS_PANEL)
 531         return;
 532
 533     machine = input_dialog_help (text, xtext, help, history_name, "", strip_password);
 534     if (machine == NULL)
 535         return;
 536
 537     to_home = 0;                /* FIXME: how to solve going to home nicely? /~/ is
 538                                    ugly as hell and leads to problems in vfs layer */
 539
 540     if (strncmp (prefix, machine, strlen (prefix)) == 0)
 541         cd_path = g_strconcat (machine, to_home ? "/~/" : (char *) NULL, (char *) NULL);
 542     else
 543         cd_path = g_strconcat (prefix, machine, to_home ? "/~/" : (char *) NULL, (char *) NULL);
 544
 545     g_free (machine);
 546
 547     if (*cd_path != PATH_SEP)
 548     {
 549         char *tmp = cd_path;
 550
 551         cd_path = g_strconcat (PATH_SEP_STR, tmp, (char *) NULL);
 552         g_free (tmp);
 553     }
 554
 555     {
 556         vfs_path_t *cd_vpath;
 557
 558         cd_vpath = vfs_path_from_str_flags (cd_path, VPF_NO_CANON);
 559         if (!do_panel_cd (MENU_PANEL, cd_vpath, cd_parse_command))
 560             message (D_ERROR, MSG_ERROR, _("Cannot chdir to \"%s\""), cd_path);
 561         vfs_path_free (cd_vpath);
 562     }
 563     g_free (cd_path);
 564 }
 565 #endif /* ENABLE_VFS_UNDELFS || ENABLE_VFS_NET */
 566
 567 /* --------------------------------------------------------------------------------------------- */
 568
 569 static void
 570 configure_panel_listing (WPanel * p, int list_type, int use_msformat, char *user, char *status)
 571 {
 572     p->user_mini_status = use_msformat;
 573     p->list_type = list_type;
 574
 575     if (list_type == list_user || use_msformat)
 576     {
 577         g_free (p->user_format);
 578         p->user_format = user;
 579
 580         g_free (p->user_status_format[list_type]);
 581         p->user_status_format[list_type] = status;
 582
 583         set_panel_formats (p);
 584     }
 585     else
 586     {
 587         g_free (user);
 588         g_free (status);
 589     }
 590
 591     set_panel_formats (p);
 592     do_refresh ();
 593 }
 594
 595 /* --------------------------------------------------------------------------------------------- */
 596
 597 static void
 598 switch_to_listing (int panel_index)
 599 {
 600     if (get_display_type (panel_index) != view_listing)
 601         set_display_type (panel_index, view_listing);
 602     else
 603     {
 604         WPanel *p;
 605
 606         p = (WPanel *) get_panel_widget (panel_index);
 607         if (p->is_panelized)
 608         {
 609             p->is_panelized = FALSE;
 610             panel_reload (p);
 611         }
 612     }
 613 }
 614
 615 /* --------------------------------------------------------------------------------------------- */
 616 /** Handle the tree internal listing modes switching */
 617
 618 static gboolean
 619 set_basic_panel_listing_to (int panel_index, int listing_mode)
 620 {
 621     WPanel *p = (WPanel *) get_panel_widget (panel_index);
 622     gboolean ok;
 623
 624     switch_to_listing (panel_index);
 625     p->list_type = listing_mode;
 626
 627     ok = set_panel_formats (p) == 0;
 628
 629     if (ok)
 630         do_refresh ();
 631
 632     return ok;
 633 }
 634
 635 /* --------------------------------------------------------------------------------------------- */
 636 /*** public functions ****************************************************************************/
 637 /* --------------------------------------------------------------------------------------------- */
 638
 639 int
 640 view_file_at_line (const vfs_path_t * filename_vpath, int plain_view, int internal, int start_line)
 641 {
 642     static const char *viewer = NULL;
 643     int move_dir = 0;
 644
 645     if (plain_view)
 646     {
 647         int changed_hex_mode = 0;
 648         int changed_nroff_flag = 0;
 649         int changed_magic_flag = 0;
 650
 651         mcview_altered_hex_mode = 0;
 652         mcview_altered_nroff_flag = 0;
 653         mcview_altered_magic_flag = 0;
 654         if (mcview_default_hex_mode)
 655             changed_hex_mode = 1;
 656         if (mcview_default_nroff_flag)
 657             changed_nroff_flag = 1;
 658         if (mcview_default_magic_flag)
 659             changed_magic_flag = 1;
 660         mcview_default_hex_mode = 0;
 661         mcview_default_nroff_flag = 0;
 662         mcview_default_magic_flag = 0;
 663
 664         switch (mcview_viewer (NULL, filename_vpath, start_line))
 665         {
 666         case MCVIEW_WANT_NEXT:
 667             move_dir = 1;
 668             break;
 669         case MCVIEW_WANT_PREV:
 670             move_dir = -1;
 671             break;
 672         default:
 673             move_dir = 0;
 674         }
 675
 676         if (changed_hex_mode && !mcview_altered_hex_mode)
 677             mcview_default_hex_mode = 1;
 678         if (changed_nroff_flag && !mcview_altered_nroff_flag)
 679             mcview_default_nroff_flag = 1;
 680         if (changed_magic_flag && !mcview_altered_magic_flag)
 681             mcview_default_magic_flag = 1;
 682
 683         dialog_switch_process_pending ();
 684     }
 685     else if (internal)
 686     {
 687         char view_entry[BUF_TINY];
 688
 689         if (start_line != 0)
 690             g_snprintf (view_entry, sizeof (view_entry), "View:%d", start_line);
 691         else
 692             strcpy (view_entry, "View");
 693
 694         if (regex_command (filename_vpath, view_entry, &move_dir) == 0)
 695         {
 696             switch (mcview_viewer (NULL, filename_vpath, start_line))
 697             {
 698             case MCVIEW_WANT_NEXT:
 699                 move_dir = 1;
 700                 break;
 701             case MCVIEW_WANT_PREV:
 702                 move_dir = -1;
 703                 break;
 704             default:
 705                 move_dir = 0;
 706             }
 707
 708             dialog_switch_process_pending ();
 709         }
 710     }
 711     else
 712     {
 713         if (viewer == NULL)
 714         {
 715             viewer = getenv ("VIEWER");
 716             if (viewer == NULL)
 717                 viewer = getenv ("PAGER");
 718             if (viewer == NULL)
 719                 viewer = "view";
 720         }
 721
 722         execute_with_vfs_arg (viewer, filename_vpath);
 723     }
 724
 725     return move_dir;
 726 }
 727
 728 /* --------------------------------------------------------------------------------------------- */
 729 /** view_file (filename, plain_view, internal)
 730  *
 731  * Inputs:
 732  *   filename_vpath: The file name to view
 733  *   plain_view:     If set does not do any fancy pre-processing (no filtering) and
 734  *                   always invokes the internal viewer.
 735  *   internal:       If set uses the internal viewer, otherwise an external viewer.
 736  */
 737
 738 int
 739 view_file (const vfs_path_t * filename_vpath, int plain_view, int internal)
 740 {
 741     return view_file_at_line (filename_vpath, plain_view, internal, 0);
 742 }
 743
 744
 745 /* --------------------------------------------------------------------------------------------- */
 746 /** Run user's preferred viewer on the currently selected file */
 747
 748 void
 749 view_cmd (void)
 750 {
 751     do_view_cmd (FALSE);
 752 }
 753
 754 /* --------------------------------------------------------------------------------------------- */
 755 /** Ask for file and run user's preferred viewer on it */
 756
 757 void
 758 view_file_cmd (void)
 759 {
 760     char *filename;
 761     vfs_path_t *vpath;
 762
 763     filename =
 764         input_expand_dialog (_("View file"), _("Filename:"),
 765                              MC_HISTORY_FM_VIEW_FILE, selection (current_panel)->fname);
 766     if (!filename)
 767         return;
 768
 769     vpath = vfs_path_from_str (filename);
 770     g_free (filename);
 771     view_file (vpath, 0, use_internal_view);
 772     vfs_path_free (vpath);
 773 }
 774
 775 /* --------------------------------------------------------------------------------------------- */
 776 /** Run plain internal viewer on the currently selected file */
 777 void
 778 view_raw_cmd (void)
 779 {
 780     do_view_cmd (TRUE);
 781 }
 782
 783 /* --------------------------------------------------------------------------------------------- */
 784
 785 void
 786 view_filtered_cmd (void)
 787 {
 788     char *command;
 789     const char *initial_command;
 790
 791     if (cmdline->buffer[0] == '\0')
 792         initial_command = selection (current_panel)->fname;
 793     else
 794         initial_command = cmdline->buffer;
 795
 796     command =
 797         input_dialog (_("Filtered view"),
 798                       _("Filter command and arguments:"),
 799                       MC_HISTORY_FM_FILTERED_VIEW, initial_command);
 800
 801     if (command != NULL)
 802     {
 803         mcview_viewer (command, NULL, 0);
 804         g_free (command);
 805         dialog_switch_process_pending ();
 806     }
 807 }
 808
 809 /* --------------------------------------------------------------------------------------------- */
 810
 811 void
 812 do_edit_at_line (const vfs_path_t * what_vpath, gboolean internal, int start_line)
 813 {
 814     static const char *editor = NULL;
 815
 816 #ifdef USE_INTERNAL_EDIT
 817     if (internal)
 818         edit_file (what_vpath, start_line);
 819     else
 820 #else
 821     (void) start_line;
 822 #endif /* USE_INTERNAL_EDIT */
 823     {
 824         if (editor == NULL)
 825         {
 826             editor = getenv ("EDITOR");
 827             if (editor == NULL)
 828                 editor = get_default_editor ();
 829         }
 830         execute_with_vfs_arg (editor, what_vpath);
 831     }
 832
 833     if (mc_global.mc_run_mode == MC_RUN_FULL)
 834         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 835
 836 #ifdef USE_INTERNAL_EDIT
 837     if (use_internal_edit)
 838         dialog_switch_process_pending ();
 839     else
 840 #endif /* USE_INTERNAL_EDIT */
 841         repaint_screen ();
 842 }
 843
 844 /* --------------------------------------------------------------------------------------------- */
 845
 846 void
 847 edit_cmd (void)
 848 {
 849     vfs_path_t *fname;
 850
 851     fname = vfs_path_from_str (selection (current_panel)->fname);
 852     if (regex_command (fname, "Edit", NULL) == 0)
 853         do_edit (fname);
 854     vfs_path_free (fname);
 855 }
 856
 857 /* --------------------------------------------------------------------------------------------- */
 858
 859 #ifdef USE_INTERNAL_EDIT
 860 void
 861 edit_cmd_force_internal (void)
 862 {
 863     vfs_path_t *fname;
 864
 865     fname = vfs_path_from_str (selection (current_panel)->fname);
 866     if (regex_command (fname, "Edit", NULL) == 0)
 867         do_edit_at_line (fname, TRUE, 0);
 868     vfs_path_free (fname);
 869 }
 870 #endif
 871
 872 /* --------------------------------------------------------------------------------------------- */
 873
 874 void
 875 edit_cmd_new (void)
 876 {
 877 #ifdef HAVE_CHARSET
 878     mc_global.source_codepage = default_source_codepage;
 879 #endif
 880     do_edit (NULL);
 881 }
 882
 883 /* --------------------------------------------------------------------------------------------- */
 884 /** Invoked by F5.  Copy, default to the other panel.  */
 885
 886 void
 887 copy_cmd (void)
 888 {
 889     save_cwds_stat ();
 890     if (panel_operate (current_panel, OP_COPY, FALSE))
 891     {
 892         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 893         repaint_screen ();
 894     }
 895 }
 896
 897 /* --------------------------------------------------------------------------------------------- */
 898 /** Invoked by F6.  Move/rename, default to the other panel, ignore marks.  */
 899
 900 void
 901 rename_cmd (void)
 902 {
 903     save_cwds_stat ();
 904     if (panel_operate (current_panel, OP_MOVE, FALSE))
 905     {
 906         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 907         repaint_screen ();
 908     }
 909 }
 910
 911 /* --------------------------------------------------------------------------------------------- */
 912 /** Invoked by F15.  Copy, default to the same panel, ignore marks.  */
 913
 914 void
 915 copy_cmd_local (void)
 916 {
 917     save_cwds_stat ();
 918     if (panel_operate (current_panel, OP_COPY, TRUE))
 919     {
 920         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 921         repaint_screen ();
 922     }
 923 }
 924
 925 /* --------------------------------------------------------------------------------------------- */
 926 /** Invoked by F16.  Move/rename, default to the same panel.  */
 927
 928 void
 929 rename_cmd_local (void)
 930 {
 931     save_cwds_stat ();
 932     if (panel_operate (current_panel, OP_MOVE, TRUE))
 933     {
 934         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 935         repaint_screen ();
 936     }
 937 }
 938
 939 /* --------------------------------------------------------------------------------------------- */
 940
 941 void
 942 mkdir_cmd (void)
 943 {
 944     char *dir;
 945     const char *name = "";
 946
 947     /* If 'on' then automatically fills name with current selected item name */
 948     if (auto_fill_mkdir_name && strcmp (selection (current_panel)->fname, "..") != 0)
 949         name = selection (current_panel)->fname;
 950
 951     dir =
 952         input_expand_dialog (_("Create a new Directory"),
 953                              _("Enter directory name:"), MC_HISTORY_FM_MKDIR, name);
 954
 955     if (dir != NULL && dir != '\0')
 956     {
 957         vfs_path_t *absdir;
 958
 959         if (dir[0] == '/' || dir[0] == '~')
 960             absdir = vfs_path_from_str (dir);
 961         else
 962         {
 963             /* possible escaped '~' */
 964             /* allow create directory with name '~' */
 965             char *tmpdir = dir;
 966
 967             if (dir[0] == '\\' && dir[1] == '~')
 968                 tmpdir = dir + 1;
 969
 970             absdir = vfs_path_append_new (current_panel->cwd_vpath, tmpdir, NULL);
 971         }
 972
 973         save_cwds_stat ();
 974         if (my_mkdir (absdir, 0777) == 0)
 975         {
 976             update_panels (UP_OPTIMIZE, dir);
 977             repaint_screen ();
 978             select_item (current_panel);
 979         }
 980         else
 981         {
 982             message (D_ERROR, MSG_ERROR, "%s", unix_error_string (errno));
 983         }
 984         vfs_path_free (absdir);
 985     }
 986     g_free (dir);
 987 }
 988
 989 /* --------------------------------------------------------------------------------------------- */
 990
 991 void
 992 delete_cmd (void)
 993 {
 994     save_cwds_stat ();
 995
 996     if (panel_operate (current_panel, OP_DELETE, FALSE))
 997     {
 998         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 999         repaint_screen ();
1000     }
1001 }
1002
1003 /* --------------------------------------------------------------------------------------------- */
1004 /** Invoked by F18.  Remove selected file, regardless of marked files.  */
1005
1006 void
1007 delete_cmd_local (void)
1008 {
1009     save_cwds_stat ();
1010
1011     if (panel_operate (current_panel, OP_DELETE, TRUE))
1012     {
1013         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
1014         repaint_screen ();
1015     }
1016 }
1017
1018 /* --------------------------------------------------------------------------------------------- */
1019
1020 void
1021 find_cmd (void)
1022 {
1023     find_file ();
1024 }
1025
1026 /* --------------------------------------------------------------------------------------------- */
1027 /** Invoked from the left/right menus */
1028
1029 void
1030 filter_cmd (void)
1031 {
1032     WPanel *p;
1033
1034     if (!SELECTED_IS_PANEL)
1035         return;
1036
1037     p = MENU_PANEL;
1038     set_panel_filter (p);
1039 }
1040
1041 /* --------------------------------------------------------------------------------------------- */
1042
1043 void
1044 reread_cmd (void)
1045 {
1046     panel_update_flags_t flag = UP_ONLY_CURRENT;
1047
1048     if (get_current_type () == view_listing && get_other_type () == view_listing &&
1049         vfs_path_cmp (current_panel->cwd_vpath, other_panel->cwd_vpath) == 0)
1050         flag = UP_OPTIMIZE;
1051
1052     update_panels (UP_RELOAD | flag, UP_KEEPSEL);
1053     repaint_screen ();
1054 }
1055
1056 /* --------------------------------------------------------------------------------------------- */
1057
1058 void
1059 select_invert_cmd (void)
1060 {
1061     int i;
1062     file_entry *file;
1063
1064     for (i = 0; i < current_panel->count; i++)
1065     {
1066         file = &current_panel->dir.list[i];
1067         if (!panels_options.reverse_files_only || !S_ISDIR (file->st.st_mode))
1068             do_file_mark (current_panel, i, !file->f.marked);
1069     }
1070 }
1071
1072 /* --------------------------------------------------------------------------------------------- */
1073
1074 void
1075 select_cmd (void)
1076 {
1077     select_unselect_cmd (_("Select"), ":select_cmd: Select ", TRUE);
1078 }
1079
1080 /* --------------------------------------------------------------------------------------------- */
1081
1082 void
1083 unselect_cmd (void)
1084 {
1085     select_unselect_cmd (_("Unselect"), ":unselect_cmd: Unselect ", FALSE);
1086 }
1087
1088 /* --------------------------------------------------------------------------------------------- */
1089
1090 void
1091 ext_cmd (void)
1092 {
1093     vfs_path_t *buffer_vpath;
1094     vfs_path_t *extdir_vpath;
1095     int dir;
1096
1097     dir = 0;
1098     if (geteuid () == 0)
1099     {
1100         dir = query_dialog (_("Extension file edit"),
1101                             _("Which extension file you want to edit?"), D_NORMAL, 2,
1102                             _("&User"), _("&System Wide"));
1103     }
1104     extdir_vpath = vfs_path_build_filename (mc_global.sysconfig_dir, MC_LIB_EXT, NULL);
1105
1106     if (dir == 0)
1107     {
1108         buffer_vpath = mc_config_get_full_vpath (MC_FILEBIND_FILE);
1109         check_for_default (extdir_vpath, buffer_vpath);
1110         do_edit (buffer_vpath);
1111         vfs_path_free (buffer_vpath);
1112     }
1113     else if (dir == 1)
1114     {
1115         if (!exist_file (vfs_path_get_last_path_str (extdir_vpath)))
1116         {
1117             vfs_path_free (extdir_vpath);
1118             extdir_vpath = vfs_path_build_filename (mc_global.share_data_dir, MC_LIB_EXT, NULL);
1119         }
1120         do_edit (extdir_vpath);
1121     }
1122     vfs_path_free (extdir_vpath);
1123     flush_extension_file ();
1124 }
1125
1126 /* --------------------------------------------------------------------------------------------- */
1127 /** edit file menu for mc */
1128
1129 void
1130 edit_mc_menu_cmd (void)
1131 {
1132     vfs_path_t *buffer_vpath;
1133     vfs_path_t *menufile_vpath;
1134     int dir = 0;
1135
1136     dir = query_dialog (_("Menu edit"),
1137                         _("Which menu file do you want to edit?"),
1138                         D_NORMAL, geteuid ()? 2 : 3, _("&Local"), _("&User"), _("&System Wide"));
1139
1140     menufile_vpath = vfs_path_build_filename (mc_global.sysconfig_dir, MC_GLOBAL_MENU, NULL);
1141
1142     if (!exist_file (vfs_path_get_last_path_str (menufile_vpath)))
1143     {
1144         vfs_path_free (menufile_vpath);
1145         menufile_vpath = vfs_path_build_filename (mc_global.share_data_dir, MC_GLOBAL_MENU, NULL);
1146     }
1147
1148     switch (dir)
1149     {
1150     case 0:
1151         buffer_vpath = vfs_path_from_str (MC_LOCAL_MENU);
1152         check_for_default (menufile_vpath, buffer_vpath);
1153         chmod (vfs_path_get_last_path_str (buffer_vpath), 0600);
1154         break;
1155
1156     case 1:
1157         buffer_vpath = mc_config_get_full_vpath (MC_USERMENU_FILE);
1158         check_for_default (menufile_vpath, buffer_vpath);
1159         break;
1160
1161     case 2:
1162         buffer_vpath = vfs_path_build_filename (mc_global.sysconfig_dir, MC_GLOBAL_MENU, NULL);
1163         if (!exist_file (vfs_path_get_last_path_str (buffer_vpath)))
1164         {
1165             vfs_path_free (buffer_vpath);
1166             buffer_vpath = vfs_path_build_filename (mc_global.share_data_dir, MC_GLOBAL_MENU, NULL);
1167         }
1168         break;
1169
1170     default:
1171         vfs_path_free (menufile_vpath);
1172         return;
1173     }
1174
1175     do_edit (buffer_vpath);
1176
1177     vfs_path_free (buffer_vpath);
1178     vfs_path_free (menufile_vpath);
1179 }
1180
1181 /* --------------------------------------------------------------------------------------------- */
1182
1183 void
1184 edit_fhl_cmd (void)
1185 {
1186     vfs_path_t *buffer_vpath = NULL;
1187     vfs_path_t *fhlfile_vpath = NULL;
1188
1189     int dir;
1190
1191     dir = 0;
1192     if (geteuid () == 0)
1193     {
1194         dir = query_dialog (_("Highlighting groups file edit"),
1195                             _("Which highlighting file you want to edit?"), D_NORMAL, 2,
1196                             _("&User"), _("&System Wide"));
1197     }
1198     fhlfile_vpath = vfs_path_build_filename (mc_global.sysconfig_dir, MC_FHL_INI_FILE, NULL);
1199
1200     if (dir == 0)
1201     {
1202         buffer_vpath = mc_config_get_full_vpath (MC_FHL_INI_FILE);
1203         check_for_default (fhlfile_vpath, buffer_vpath);
1204         do_edit (buffer_vpath);
1205         vfs_path_free (buffer_vpath);
1206     }
1207     else if (dir == 1)
1208     {
1209         if (!exist_file (vfs_path_get_last_path_str (fhlfile_vpath)))
1210         {
1211             vfs_path_free (fhlfile_vpath);
1212             fhlfile_vpath =
1213                 vfs_path_build_filename (mc_global.sysconfig_dir, MC_FHL_INI_FILE, NULL);
1214         }
1215         do_edit (fhlfile_vpath);
1216     }
1217     vfs_path_free (fhlfile_vpath);
1218
1219     /* refresh highlighting rules */
1220     mc_fhl_free (&mc_filehighlight);
1221     mc_filehighlight = mc_fhl_new (TRUE);
1222 }
1223
1224 /* --------------------------------------------------------------------------------------------- */
1225
1226 void
1227 hotlist_cmd (void)
1228 {
1229     char *target;
1230
1231     target = hotlist_show (LIST_HOTLIST);
1232     if (!target)
1233         return;
1234
1235     if (get_current_type () == view_tree)
1236         tree_chdir (the_tree, target);
1237     else
1238     {
1239         vfs_path_t *deprecated_vpath;
1240         char *cmd, *normalized_target;
1241
1242         deprecated_vpath = vfs_path_from_str_flags (target, VPF_USE_DEPRECATED_PARSER);
1243         normalized_target = vfs_path_to_str (deprecated_vpath);
1244         cmd = g_strconcat ("cd ", normalized_target, (char *) NULL);
1245         g_free (normalized_target);
1246         vfs_path_free (deprecated_vpath);
1247
1248         do_cd_command (cmd);
1249         g_free (cmd);
1250     }
1251     g_free (target);
1252 }
1253
1254 #ifdef ENABLE_VFS
1255 void
1256 vfs_list (void)
1257 {
1258     char *target;
1259     vfs_path_t *target_vpath;
1260
1261     target = hotlist_show (LIST_VFSLIST);
1262     if (!target)
1263         return;
1264
1265     target_vpath = vfs_path_from_str (target);
1266     if (!do_cd (target_vpath, cd_exact))
1267         message (D_ERROR, MSG_ERROR, _("Cannot change directory"));
1268     vfs_path_free (target_vpath);
1269     g_free (target);
1270 }
1271 #endif /* ENABLE_VFS */
1272
1273 /* --------------------------------------------------------------------------------------------- */
1274
1275 void
1276 compare_dirs_cmd (void)
1277 {
1278     int choice;
1279     enum CompareMode thorough_flag;
1280
1281     choice =
1282         query_dialog (_("Compare directories"),
1283                       _("Select compare method:"), D_NORMAL, 4,
1284                       _("&Quick"), _("&Size only"), _("&Thorough"), _("&Cancel"));
1285
1286     if (choice < 0 || choice > 2)
1287         return;
1288
1289     thorough_flag = choice;
1290
1291     if (get_current_type () == view_listing && get_other_type () == view_listing)
1292     {
1293         compare_dir (current_panel, other_panel, thorough_flag);
1294         compare_dir (other_panel, current_panel, thorough_flag);
1295     }
1296     else
1297     {
1298         message (D_ERROR, MSG_ERROR,
1299                  _("Both panels should be in the listing mode\nto use this command"));
1300     }
1301 }
1302
1303 /* --------------------------------------------------------------------------------------------- */
1304
1305 #ifdef USE_DIFF_VIEW
1306 void
1307 diff_view_cmd (void)
1308 {
1309     /* both panels must be in the list mode */
1310     if (get_current_type () != view_listing || get_other_type () != view_listing)
1311         return;
1312
1313     if (get_current_index () == 0)
1314         dview_diff_cmd (current_panel, other_panel);
1315     else
1316         dview_diff_cmd (other_panel, current_panel);
1317
1318     if (mc_global.mc_run_mode == MC_RUN_FULL)
1319         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
1320
1321     dialog_switch_process_pending ();
1322 }
1323 #endif
1324
1325 /* --------------------------------------------------------------------------------------------- */
1326
1327 void
1328 swap_cmd (void)
1329 {
1330     swap_panels ();
1331     tty_touch_screen ();
1332     repaint_screen ();
1333 }
1334
1335 /* --------------------------------------------------------------------------------------------- */
1336
1337 void
1338 view_other_cmd (void)
1339 {
1340     static int message_flag = TRUE;
1341
1342     if (!mc_global.tty.xterm_flag && mc_global.tty.console_flag == '\0'
1343         && !mc_global.tty.use_subshell && !output_starts_shell)
1344     {
1345         if (message_flag)
1346             message (D_ERROR, MSG_ERROR,
1347                      _("Not an xterm or Linux console;\nthe panels cannot be toggled."));
1348         message_flag = FALSE;
1349     }
1350     else
1351     {
1352         toggle_panels ();
1353     }
1354 }
1355
1356 /* --------------------------------------------------------------------------------------------- */
1357
1358 void
1359 link_cmd (link_type_t link_type)
1360 {
1361     char *filename = selection (current_panel)->fname;
1362
1363     if (filename != NULL)
1364         do_link (link_type, filename);
1365 }
1366
1367 /* --------------------------------------------------------------------------------------------- */
1368
1369 void
1370 edit_symlink_cmd (void)
1371 {
1372     if (S_ISLNK (selection (current_panel)->st.st_mode))
1373     {
1374         char buffer[MC_MAXPATHLEN];
1375         char *p = NULL;
1376         int i;
1377         char *dest, *q;
1378         vfs_path_t *p_vpath;
1379
1380         p = selection (current_panel)->fname;
1381         p_vpath = vfs_path_from_str (p);
1382
1383         q = g_strdup_printf (_("Symlink `%s\' points to:"), str_trunc (p, 32));
1384
1385         i = readlink (p, buffer, MC_MAXPATHLEN - 1);
1386         if (i > 0)
1387         {
1388             buffer[i] = 0;
1389             dest = input_expand_dialog (_("Edit symlink"), q, MC_HISTORY_FM_EDIT_LINK, buffer);
1390             if (dest)
1391             {
1392                 if (*dest && strcmp (buffer, dest))
1393                 {
1394                     save_cwds_stat ();
1395                     if (mc_unlink (p_vpath) == -1)
1396                     {
1397                         message (D_ERROR, MSG_ERROR, _("edit symlink, unable to remove %s: %s"),
1398                                  p, unix_error_string (errno));
1399                     }
1400                     else
1401                     {
1402                         vfs_path_t *dest_vpath;
1403
1404                         dest_vpath = vfs_path_from_str_flags (dest, VPF_NO_CANON);
1405                         if (mc_symlink (dest_vpath, p_vpath) == -1)
1406                             message (D_ERROR, MSG_ERROR, _("edit symlink: %s"),
1407                                      unix_error_string (errno));
1408                         vfs_path_free (dest_vpath);
1409                     }
1410                     update_panels (UP_OPTIMIZE, UP_KEEPSEL);
1411                     repaint_screen ();
1412                 }
1413                 g_free (dest);
1414             }
1415         }
1416         g_free (q);
1417         vfs_path_free (p_vpath);
1418     }
1419     else
1420     {
1421         message (D_ERROR, MSG_ERROR, _("`%s' is not a symbolic link"),
1422                  selection (current_panel)->fname);
1423     }
1424 }
1425
1426 /* --------------------------------------------------------------------------------------------- */
1427
1428 void
1429 help_cmd (void)
1430 {
1431     ev_help_t event_data = { NULL, NULL };
1432
1433     if (current_panel->searching)
1434         event_data.node = "[Quick search]";
1435     else
1436         event_data.node = "[main]";
1437
1438     mc_event_raise (MCEVENT_GROUP_CORE, "help", &event_data);
1439 }
1440
1441 /* --------------------------------------------------------------------------------------------- */
1442
1443 void
1444 user_file_menu_cmd (void)
1445 {
1446     (void) user_menu_cmd (NULL, NULL, -1);
1447 }
1448
1449 /* --------------------------------------------------------------------------------------------- */
1450 /**
1451  * Return a random hint.  If force is not 0, ignore the timeout.
1452  */
1453
1454 char *
1455 get_random_hint (int force)
1456 {
1457     char *data, *result = NULL, *eol;
1458     int len;
1459     int start;
1460     static int last_sec;
1461     static struct timeval tv;
1462     GIConv conv;
1463
1464     /* Do not change hints more often than one minute */
1465     gettimeofday (&tv, NULL);
1466     if (!force && !(tv.tv_sec > last_sec + 60))
1467         return g_strdup ("");
1468     last_sec = tv.tv_sec;
1469
1470     data = load_mc_home_file (mc_global.share_data_dir, MC_HINT, NULL);
1471     if (data == NULL)
1472         return NULL;
1473
1474     /* get a random entry */
1475     srand (tv.tv_sec);
1476     len = strlen (data);
1477     start = rand () % len;
1478
1479     for (; start != 0; start--)
1480         if (data[start] == '\n')
1481         {
1482             start++;
1483             break;
1484         }
1485
1486     eol = strchr (data + start, '\n');
1487     if (eol != NULL)
1488         *eol = '\0';
1489
1490     /* hint files are stored in utf-8 */
1491     /* try convert hint file from utf-8 to terminal encoding */
1492     conv = str_crt_conv_from ("UTF-8");
1493     if (conv != INVALID_CONV)
1494     {
1495         GString *buffer;
1496
1497         buffer = g_string_new ("");
1498         if (str_convert (conv, &data[start], buffer) != ESTR_FAILURE)
1499             result = g_string_free (buffer, FALSE);
1500         else
1501             g_string_free (buffer, TRUE);
1502         str_close_conv (conv);
1503     }
1504
1505     g_free (data);
1506     return result;
1507 }
1508
1509 /* --------------------------------------------------------------------------------------------- */
1510
1511 #ifdef ENABLE_VFS_FTP
1512 void
1513 ftplink_cmd (void)
1514 {
1515     nice_cd (_("FTP to machine"), _(machine_str),
1516              "[FTP File System]", ":ftplink_cmd: FTP to machine ", "ftp://", 1, TRUE);
1517 }
1518 #endif /* ENABLE_VFS_FTP */
1519
1520 /* --------------------------------------------------------------------------------------------- */
1521
1522 #ifdef ENABLE_VFS_FISH
1523 void
1524 fishlink_cmd (void)
1525 {
1526     nice_cd (_("Shell link to machine"), _(machine_str),
1527              "[FIle transfer over SHell filesystem]", ":fishlink_cmd: Shell link to machine ",
1528              "sh://", 1, TRUE);
1529 }
1530 #endif /* ENABLE_VFS_FISH */
1531
1532 /* --------------------------------------------------------------------------------------------- */
1533
1534 #ifdef ENABLE_VFS_SMB
1535 void
1536 smblink_cmd (void)
1537 {
1538     nice_cd (_("SMB link to machine"), _(machine_str),
1539              "[SMB File System]", ":smblink_cmd: SMB link to machine ", "smb://", 0, TRUE);
1540 }
1541 #endif /* ENABLE_VFS_SMB */
1542
1543 /* --------------------------------------------------------------------------------------------- */
1544
1545 #ifdef ENABLE_VFS_UNDELFS
1546 void
1547 undelete_cmd (void)
1548 {
1549     nice_cd (_("Undelete files on an ext2 file system"),
1550              _("Enter device (without /dev/) to undelete\nfiles on: (F1 for details)"),
1551              "[Undelete File System]", ":undelete_cmd: Undel on ext2 fs ", "undel://", 0, FALSE);
1552 }
1553 #endif /* ENABLE_VFS_UNDELFS */
1554
1555 /* --------------------------------------------------------------------------------------------- */
1556
1557 void
1558 quick_cd_cmd (void)
1559 {
1560     char *p = cd_dialog ();
1561
1562     if (p && *p)
1563     {
1564         char *q = g_strconcat ("cd ", p, (char *) NULL);
1565
1566         do_cd_command (q);
1567         g_free (q);
1568     }
1569     g_free (p);
1570 }
1571
1572 /* --------------------------------------------------------------------------------------------- */
1573 /*!
1574    \brief calculate dirs sizes
1575
1576    calculate dirs sizes and resort panel:
1577    dirs_selected = show size for selected dirs,
1578    otherwise = show size for dir under cursor:
1579    dir under cursor ".." = show size for all dirs,
1580    otherwise = show size for dir under cursor
1581  */
1582
1583 void
1584 smart_dirsize_cmd (void)
1585 {
1586     WPanel *panel = current_panel;
1587     file_entry *entry;
1588
1589     entry = &(panel->dir.list[panel->selected]);
1590     if ((S_ISDIR (entry->st.st_mode) && (strcmp (entry->fname, "..") == 0)) || panel->dirs_marked)
1591         dirsizes_cmd ();
1592     else
1593         single_dirsize_cmd ();
1594 }
1595
1596 /* --------------------------------------------------------------------------------------------- */
1597
1598 void
1599 single_dirsize_cmd (void)
1600 {
1601     WPanel *panel = current_panel;
1602     file_entry *entry;
1603
1604     entry = &(panel->dir.list[panel->selected]);
1605     if (S_ISDIR (entry->st.st_mode) && strcmp (entry->fname, "..") != 0)
1606     {
1607         size_t marked = 0;
1608         uintmax_t total = 0;
1609         ComputeDirSizeUI *ui;
1610         vfs_path_t *p;
1611
1612         ui = compute_dir_size_create_ui ();
1613         p = vfs_path_from_str (entry->fname);
1614
1615         if (compute_dir_size (p, ui, compute_dir_size_update_ui, &marked, &total, TRUE) ==
1616             FILE_CONT)
1617         {
1618             entry->st.st_size = (off_t) total;
1619             entry->f.dir_size_computed = 1;
1620         }
1621
1622         vfs_path_free (p);
1623         compute_dir_size_destroy_ui (ui);
1624     }
1625
1626     if (panels_options.mark_moves_down)
1627         send_message ((Widget *) panel, WIDGET_COMMAND, CK_Down);
1628
1629     recalculate_panel_summary (panel);
1630
1631     if (current_panel->sort_info.sort_field->sort_routine == (sortfn *) sort_size)
1632         panel_re_sort (panel);
1633
1634     panel->dirty = 1;
1635 }
1636
1637 /* --------------------------------------------------------------------------------------------- */
1638
1639 void
1640 dirsizes_cmd (void)
1641 {
1642     WPanel *panel = current_panel;
1643     int i;
1644     ComputeDirSizeUI *ui;
1645
1646     ui = compute_dir_size_create_ui ();
1647
1648     for (i = 0; i < panel->count; i++)
1649         if (S_ISDIR (panel->dir.list[i].st.st_mode)
1650             && ((panel->dirs_marked && panel->dir.list[i].f.marked)
1651                 || !panel->dirs_marked) && strcmp (panel->dir.list[i].fname, "..") != 0)
1652         {
1653             vfs_path_t *p;
1654             size_t marked = 0;
1655             uintmax_t total = 0;
1656             gboolean ok;
1657
1658             p = vfs_path_from_str (panel->dir.list[i].fname);
1659             ok = compute_dir_size (p, ui, compute_dir_size_update_ui, &marked, &total,
1660                                    TRUE) != FILE_CONT;
1661             vfs_path_free (p);
1662
1663             if (ok)
1664                 break;
1665
1666             panel->dir.list[i].st.st_size = (off_t) total;
1667             panel->dir.list[i].f.dir_size_computed = 1;
1668         }
1669
1670     compute_dir_size_destroy_ui (ui);
1671
1672     recalculate_panel_summary (panel);
1673
1674     if (current_panel->sort_info.sort_field->sort_routine == (sortfn *) sort_size)
1675         panel_re_sort (panel);
1676
1677     panel->dirty = 1;
1678 }
1679
1680 /* --------------------------------------------------------------------------------------------- */
1681
1682 void
1683 save_setup_cmd (void)
1684 {
1685     vfs_path_t *vpath;
1686     char *path;
1687
1688     vpath = mc_config_get_full_vpath (MC_CONFIG_FILE);
1689     path = vfs_path_to_str_flags (vpath, 0, VPF_STRIP_HOME);
1690     vfs_path_free (vpath);
1691
1692     if (save_setup (TRUE, TRUE))
1693         message (D_NORMAL, _("Setup"), _("Setup saved to %s"), path);
1694     else
1695         message (D_ERROR, _("Setup"), _("Unable to save setup to %s"), path);
1696     g_free (path);
1697 }
1698
1699 /* --------------------------------------------------------------------------------------------- */
1700
1701 void
1702 info_cmd_no_menu (void)
1703 {
1704     if (get_display_type (0) == view_info)
1705         set_display_type (0, view_listing);
1706     else if (get_display_type (1) == view_info)
1707         set_display_type (1, view_listing);
1708     else
1709         set_display_type (current_panel == left_panel ? 1 : 0, view_info);
1710 }
1711
1712 /* --------------------------------------------------------------------------------------------- */
1713
1714 void
1715 quick_cmd_no_menu (void)
1716 {
1717     if (get_display_type (0) == view_quick)
1718         set_display_type (0, view_listing);
1719     else if (get_display_type (1) == view_quick)
1720         set_display_type (1, view_listing);
1721     else
1722         set_display_type (current_panel == left_panel ? 1 : 0, view_quick);
1723 }
1724
1725 /* --------------------------------------------------------------------------------------------- */
1726
1727 void
1728 listing_cmd (void)
1729 {
1730     switch_to_listing (MENU_PANEL_IDX);
1731 }
1732
1733 /* --------------------------------------------------------------------------------------------- */
1734
1735 void
1736 change_listing_cmd (void)
1737 {
1738     int list_type;
1739     int use_msformat;
1740     char *user, *status;
1741     WPanel *p = NULL;
1742
1743     if (get_display_type (MENU_PANEL_IDX) == view_listing)
1744         p = MENU_PANEL_IDX == 0 ? left_panel : right_panel;
1745
1746     list_type = display_box (p, &user, &status, &use_msformat, MENU_PANEL_IDX);
1747
1748     if (list_type != -1)
1749     {
1750         switch_to_listing (MENU_PANEL_IDX);
1751         p = MENU_PANEL_IDX == 0 ? left_panel : right_panel;
1752         configure_panel_listing (p, list_type, use_msformat, user, status);
1753     }
1754 }
1755
1756 /* --------------------------------------------------------------------------------------------- */
1757
1758 void
1759 panel_tree_cmd (void)
1760 {
1761     set_display_type (MENU_PANEL_IDX, view_tree);
1762 }
1763
1764 /* --------------------------------------------------------------------------------------------- */
1765
1766 void
1767 info_cmd (void)
1768 {
1769     set_display_type (MENU_PANEL_IDX, view_info);
1770 }
1771
1772 /* --------------------------------------------------------------------------------------------- */
1773
1774 void
1775 quick_view_cmd (void)
1776 {
1777     if ((WPanel *) get_panel_widget (MENU_PANEL_IDX) == current_panel)
1778         change_panel ();
1779     set_display_type (MENU_PANEL_IDX, view_quick);
1780 }
1781
1782 /* --------------------------------------------------------------------------------------------- */
1783
1784 void
1785 toggle_listing_cmd (void)
1786 {
1787     int current = get_current_index ();
1788     WPanel *p = (WPanel *) get_panel_widget (current);
1789
1790     set_basic_panel_listing_to (current, (p->list_type + 1) % LIST_TYPES);
1791 }
1792
1793 /* --------------------------------------------------------------------------------------------- */
1794
1795 #ifdef HAVE_CHARSET
1796 void
1797 encoding_cmd (void)
1798 {
1799     if (SELECTED_IS_PANEL)
1800         panel_change_encoding (MENU_PANEL);
1801 }
1802 #endif
1803
1804 /* --------------------------------------------------------------------------------------------- */