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, 2013
   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  * Run viewer (internal or external) on the currently selected file.
 126  * If normal is TRUE, force internal viewer and raw mode (used for F13).
 127  */
 128 static void
 129 do_view_cmd (gboolean normal)
 130 {
 131     /* Directories are viewed by changing to them */
 132     if (S_ISDIR (selection (current_panel)->st.st_mode) || link_isdir (selection (current_panel)))
 133     {
 134         vfs_path_t *fname_vpath;
 135
 136         if (confirm_view_dir && (current_panel->marked || current_panel->dirs_marked))
 137         {
 138             if (query_dialog
 139                 (_("Confirmation"), _("Files tagged, want to cd?"), D_NORMAL, 2,
 140                  _("&Yes"), _("&No")) != 0)
 141             {
 142                 return;
 143             }
 144         }
 145         fname_vpath = vfs_path_from_str (selection (current_panel)->fname);
 146         if (!do_cd (fname_vpath, cd_exact))
 147             message (D_ERROR, MSG_ERROR, _("Cannot change directory"));
 148         vfs_path_free (fname_vpath);
 149     }
 150     else
 151     {
 152         int file_idx;
 153         vfs_path_t *filename_vpath;
 154
 155         file_idx = current_panel->selected;
 156         filename_vpath = vfs_path_from_str (current_panel->dir.list[file_idx].fname);
 157         view_file (filename_vpath, normal, use_internal_view);
 158         vfs_path_free (filename_vpath);
 159     }
 160
 161     repaint_screen ();
 162 }
 163
 164 /* --------------------------------------------------------------------------------------------- */
 165
 166 static inline void
 167 do_edit (const vfs_path_t * what_vpath)
 168 {
 169     long line = 0;
 170
 171     if (!use_internal_edit)
 172     {
 173         long column;
 174         off_t offset;
 175
 176         if (what_vpath != NULL && *(vfs_path_get_by_index (what_vpath, 0)->path) != '\0')
 177             load_file_position (what_vpath, &line, &column, &offset, NULL);
 178     }
 179     do_edit_at_line (what_vpath, use_internal_edit, line);
 180 }
 181
 182 /* --------------------------------------------------------------------------------------------- */
 183
 184 static void
 185 set_panel_filter_to (WPanel * p, char *allocated_filter_string)
 186 {
 187     g_free (p->filter);
 188     p->filter = 0;
 189
 190     if (!(allocated_filter_string[0] == '*' && allocated_filter_string[1] == 0))
 191         p->filter = allocated_filter_string;
 192     else
 193         g_free (allocated_filter_string);
 194     reread_cmd ();
 195 }
 196
 197 /* --------------------------------------------------------------------------------------------- */
 198 /** Set a given panel filter expression */
 199
 200 static void
 201 set_panel_filter (WPanel * p)
 202 {
 203     char *reg_exp;
 204     const char *x;
 205
 206     x = p->filter ? p->filter : easy_patterns ? "*" : ".";
 207
 208     reg_exp = input_dialog_help (_("Filter"),
 209                                  _("Set expression for filtering filenames"),
 210                                  "[Filter...]", MC_HISTORY_FM_PANEL_FILTER, x, FALSE,
 211                                  INPUT_COMPLETE_FILENAMES);
 212     if (!reg_exp)
 213         return;
 214     set_panel_filter_to (p, reg_exp);
 215 }
 216
 217 /* --------------------------------------------------------------------------------------------- */
 218
 219 static void
 220 select_unselect_cmd (const char *title, const char *history_name, gboolean do_select)
 221 {
 222     int files_only = (select_flags & SELECT_FILES_ONLY) != 0;
 223     int case_sens = (select_flags & SELECT_MATCH_CASE) != 0;
 224     int shell_patterns = (select_flags & SELECT_SHELL_PATTERNS) != 0;
 225
 226     char *reg_exp;
 227     mc_search_t *search;
 228     int i;
 229
 230     quick_widget_t quick_widgets[] = {
 231         /* *INDENT-OFF* */
 232         QUICK_INPUT (INPUT_LAST_TEXT, history_name, &reg_exp, NULL,
 233                      FALSE, FALSE, INPUT_COMPLETE_FILENAMES),
 234         QUICK_START_COLUMNS,
 235             QUICK_CHECKBOX (N_("&Files only"), &files_only, NULL),
 236             QUICK_CHECKBOX (N_("&Using shell patterns"), &shell_patterns, NULL),
 237         QUICK_NEXT_COLUMN,
 238             QUICK_CHECKBOX (N_("&Case sensitive"), &case_sens, NULL),
 239         QUICK_STOP_COLUMNS,
 240         QUICK_END
 241         /* *INDENT-ON* */
 242     };
 243
 244     quick_dialog_t qdlg = {
 245         -1, -1, 50,
 246         title, "[Select/Unselect Files]",
 247         quick_widgets, NULL, NULL
 248     };
 249
 250     if (quick_dialog (&qdlg) == B_CANCEL)
 251         return;
 252
 253     if (reg_exp == NULL || *reg_exp == '\0')
 254     {
 255         g_free (reg_exp);
 256         return;
 257     }
 258
 259     search = mc_search_new (reg_exp, -1);
 260     search->search_type = (shell_patterns != 0) ? MC_SEARCH_T_GLOB : MC_SEARCH_T_REGEX;
 261     search->is_entire_line = TRUE;
 262     search->is_case_sensitive = case_sens != 0;
 263
 264     for (i = 0; i < current_panel->count; i++)
 265     {
 266         if (strcmp (current_panel->dir.list[i].fname, "..") == 0)
 267             continue;
 268         if (S_ISDIR (current_panel->dir.list[i].st.st_mode) && files_only != 0)
 269             continue;
 270
 271         if (mc_search_run (search, current_panel->dir.list[i].fname,
 272                            0, current_panel->dir.list[i].fnamelen, NULL))
 273             do_file_mark (current_panel, i, do_select);
 274     }
 275
 276     mc_search_free (search);
 277     g_free (reg_exp);
 278
 279     /* result flags */
 280     select_flags = 0;
 281     if (case_sens != 0)
 282         select_flags |= SELECT_MATCH_CASE;
 283     if (files_only != 0)
 284         select_flags |= SELECT_FILES_ONLY;
 285     if (shell_patterns != 0)
 286         select_flags |= SELECT_SHELL_PATTERNS;
 287 }
 288
 289 /* --------------------------------------------------------------------------------------------- */
 290
 291 static int
 292 compare_files (const vfs_path_t * vpath1, const vfs_path_t * vpath2, off_t size)
 293 {
 294     int file1, file2;
 295     char *name;
 296     int result = -1;            /* Different by default */
 297
 298     if (size == 0)
 299         return 0;
 300
 301     name = vfs_path_to_str (vpath1);
 302     file1 = open (name, O_RDONLY);
 303     g_free (name);
 304     if (file1 >= 0)
 305     {
 306         name = vfs_path_to_str (vpath2);
 307         file2 = open (name, O_RDONLY);
 308         g_free (name);
 309         if (file2 >= 0)
 310         {
 311 #ifdef HAVE_MMAP
 312             char *data1, *data2;
 313             /* Ugly if jungle */
 314             data1 = mmap (0, size, PROT_READ, MAP_FILE | MAP_PRIVATE, file1, 0);
 315             if (data1 != (char *) -1)
 316             {
 317                 data2 = mmap (0, size, PROT_READ, MAP_FILE | MAP_PRIVATE, file2, 0);
 318                 if (data2 != (char *) -1)
 319                 {
 320                     rotate_dash ();
 321                     result = memcmp (data1, data2, size);
 322                     munmap (data2, size);
 323                 }
 324                 munmap (data1, size);
 325             }
 326 #else
 327             /* Don't have mmap() :( Even more ugly :) */
 328             char buf1[BUFSIZ], buf2[BUFSIZ];
 329             int n1, n2;
 330             rotate_dash ();
 331             do
 332             {
 333                 while ((n1 = read (file1, buf1, BUFSIZ)) == -1 && errno == EINTR);
 334                 while ((n2 = read (file2, buf2, BUFSIZ)) == -1 && errno == EINTR);
 335             }
 336             while (n1 == n2 && n1 == BUFSIZ && !memcmp (buf1, buf2, BUFSIZ));
 337             result = (n1 != n2) || memcmp (buf1, buf2, n1);
 338 #endif /* !HAVE_MMAP */
 339             close (file2);
 340         }
 341         close (file1);
 342     }
 343     return result;
 344 }
 345
 346 /* --------------------------------------------------------------------------------------------- */
 347
 348 static void
 349 compare_dir (WPanel * panel, WPanel * other, enum CompareMode mode)
 350 {
 351     int i, j;
 352
 353     /* No marks by default */
 354     panel->marked = 0;
 355     panel->total = 0;
 356     panel->dirs_marked = 0;
 357
 358     /* Handle all files in the panel */
 359     for (i = 0; i < panel->count; i++)
 360     {
 361         file_entry *source = &panel->dir.list[i];
 362
 363         /* Default: unmarked */
 364         file_mark (panel, i, 0);
 365
 366         /* Skip directories */
 367         if (S_ISDIR (source->st.st_mode))
 368             continue;
 369
 370         /* Search the corresponding entry from the other panel */
 371         for (j = 0; j < other->count; j++)
 372         {
 373             if (strcmp (source->fname, other->dir.list[j].fname) == 0)
 374                 break;
 375         }
 376         if (j >= other->count)
 377             /* Not found -> mark */
 378             do_file_mark (panel, i, 1);
 379         else
 380         {
 381             /* Found */
 382             file_entry *target = &other->dir.list[j];
 383
 384             if (mode != compare_size_only)
 385             {
 386                 /* Older version is not marked */
 387                 if (source->st.st_mtime < target->st.st_mtime)
 388                     continue;
 389             }
 390
 391             /* Newer version with different size is marked */
 392             if (source->st.st_size != target->st.st_size)
 393             {
 394                 do_file_mark (panel, i, 1);
 395                 continue;
 396
 397             }
 398             if (mode == compare_size_only)
 399                 continue;
 400
 401             if (mode == compare_quick)
 402             {
 403                 /* Thorough compare off, compare only time stamps */
 404                 /* Mark newer version, don't mark version with the same date */
 405                 if (source->st.st_mtime > target->st.st_mtime)
 406                 {
 407                     do_file_mark (panel, i, 1);
 408                 }
 409                 continue;
 410             }
 411
 412             /* Thorough compare on, do byte-by-byte comparison */
 413             {
 414                 vfs_path_t *src_name, *dst_name;
 415
 416                 src_name = vfs_path_append_new (panel->cwd_vpath, source->fname, NULL);
 417                 dst_name = vfs_path_append_new (other->cwd_vpath, target->fname, NULL);
 418                 if (compare_files (src_name, dst_name, source->st.st_size))
 419                     do_file_mark (panel, i, 1);
 420                 vfs_path_free (src_name);
 421                 vfs_path_free (dst_name);
 422             }
 423         }
 424     }                           /* for (i ...) */
 425 }
 426
 427 /* --------------------------------------------------------------------------------------------- */
 428
 429 static void
 430 do_link (link_type_t link_type, const char *fname)
 431 {
 432     char *dest = NULL, *src = NULL;
 433     vfs_path_t *fname_vpath, *dest_vpath = NULL;
 434
 435     fname_vpath = vfs_path_from_str (fname);
 436     if (link_type == LINK_HARDLINK)
 437     {
 438         src = g_strdup_printf (_("Link %s to:"), str_trunc (fname, 46));
 439         dest =
 440             input_expand_dialog (_("Link"), src, MC_HISTORY_FM_LINK, "", INPUT_COMPLETE_FILENAMES);
 441         if (!dest || !*dest)
 442             goto cleanup;
 443         save_cwds_stat ();
 444         dest_vpath = vfs_path_from_str (dest);
 445         if (-1 == mc_link (fname_vpath, dest_vpath))
 446             message (D_ERROR, MSG_ERROR, _("link: %s"), unix_error_string (errno));
 447     }
 448     else
 449     {
 450         vfs_path_t *s, *d;
 451
 452         /* suggest the full path for symlink, and either the full or
 453            relative path to the file it points to  */
 454         s = vfs_path_append_new (current_panel->cwd_vpath, fname, NULL);
 455
 456         if (get_other_type () == view_listing)
 457             d = vfs_path_append_new (other_panel->cwd_vpath, fname, NULL);
 458         else
 459             d = vfs_path_from_str (fname);
 460
 461         if (link_type == LINK_SYMLINK_RELATIVE)
 462         {
 463             char *s_str;
 464
 465             s_str = diff_two_paths (other_panel->cwd_vpath, s);
 466             vfs_path_free (s);
 467             s = vfs_path_from_str_flags (s_str, VPF_NO_CANON);
 468             g_free (s_str);
 469         }
 470
 471         symlink_dialog (s, d, &dest, &src);
 472         vfs_path_free (d);
 473         vfs_path_free (s);
 474
 475         if (!dest || !*dest || !src || !*src)
 476             goto cleanup;
 477         save_cwds_stat ();
 478
 479         dest_vpath = vfs_path_from_str_flags (dest, VPF_NO_CANON);
 480
 481         s = vfs_path_from_str (src);
 482         if (mc_symlink (dest_vpath, s) == -1)
 483             message (D_ERROR, MSG_ERROR, _("symlink: %s"), unix_error_string (errno));
 484         vfs_path_free (s);
 485     }
 486
 487     update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 488     repaint_screen ();
 489
 490   cleanup:
 491     vfs_path_free (fname_vpath);
 492     vfs_path_free (dest_vpath);
 493     g_free (src);
 494     g_free (dest);
 495 }
 496
 497 /* --------------------------------------------------------------------------------------------- */
 498
 499 #if defined(ENABLE_VFS_UNDELFS) || defined(ENABLE_VFS_NET)
 500 static void
 501 nice_cd (const char *text, const char *xtext, const char *help,
 502          const char *history_name, const char *prefix, int to_home, gboolean strip_password)
 503 {
 504     char *machine;
 505     char *cd_path;
 506
 507     if (!SELECTED_IS_PANEL)
 508         return;
 509
 510     machine =
 511         input_dialog_help (text, xtext, help, history_name, "", strip_password,
 512                            INPUT_COMPLETE_FILENAMES | INPUT_COMPLETE_CD | INPUT_COMPLETE_HOSTNAMES |
 513                            INPUT_COMPLETE_USERNAMES);
 514     if (machine == NULL)
 515         return;
 516
 517     to_home = 0;                /* FIXME: how to solve going to home nicely? /~/ is
 518                                    ugly as hell and leads to problems in vfs layer */
 519
 520     if (strncmp (prefix, machine, strlen (prefix)) == 0)
 521         cd_path = g_strconcat (machine, to_home ? "/~/" : (char *) NULL, (char *) NULL);
 522     else
 523         cd_path = g_strconcat (prefix, machine, to_home ? "/~/" : (char *) NULL, (char *) NULL);
 524
 525     g_free (machine);
 526
 527     if (*cd_path != PATH_SEP)
 528     {
 529         char *tmp = cd_path;
 530
 531         cd_path = g_strconcat (PATH_SEP_STR, tmp, (char *) NULL);
 532         g_free (tmp);
 533     }
 534
 535     {
 536         vfs_path_t *cd_vpath;
 537
 538         cd_vpath = vfs_path_from_str_flags (cd_path, VPF_NO_CANON);
 539         if (!do_panel_cd (MENU_PANEL, cd_vpath, cd_parse_command))
 540             message (D_ERROR, MSG_ERROR, _("Cannot chdir to \"%s\""), cd_path);
 541         vfs_path_free (cd_vpath);
 542     }
 543     g_free (cd_path);
 544 }
 545 #endif /* ENABLE_VFS_UNDELFS || ENABLE_VFS_NET */
 546
 547 /* --------------------------------------------------------------------------------------------- */
 548
 549 static void
 550 configure_panel_listing (WPanel * p, int list_type, int use_msformat, char *user, char *status)
 551 {
 552     p->user_mini_status = use_msformat;
 553     p->list_type = list_type;
 554
 555     if (list_type == list_user || use_msformat)
 556     {
 557         g_free (p->user_format);
 558         p->user_format = user;
 559
 560         g_free (p->user_status_format[list_type]);
 561         p->user_status_format[list_type] = status;
 562
 563         set_panel_formats (p);
 564     }
 565     else
 566     {
 567         g_free (user);
 568         g_free (status);
 569     }
 570
 571     set_panel_formats (p);
 572     do_refresh ();
 573 }
 574
 575 /* --------------------------------------------------------------------------------------------- */
 576
 577 static void
 578 switch_to_listing (int panel_index)
 579 {
 580     if (get_display_type (panel_index) != view_listing)
 581         set_display_type (panel_index, view_listing);
 582     else
 583     {
 584         WPanel *p;
 585
 586         p = (WPanel *) get_panel_widget (panel_index);
 587         if (p->is_panelized)
 588         {
 589             p->is_panelized = FALSE;
 590             panel_reload (p);
 591         }
 592     }
 593 }
 594
 595 /* --------------------------------------------------------------------------------------------- */
 596 /** Handle the tree internal listing modes switching */
 597
 598 static gboolean
 599 set_basic_panel_listing_to (int panel_index, int listing_mode)
 600 {
 601     WPanel *p = (WPanel *) get_panel_widget (panel_index);
 602     gboolean ok;
 603
 604     switch_to_listing (panel_index);
 605     p->list_type = listing_mode;
 606
 607     ok = set_panel_formats (p) == 0;
 608
 609     if (ok)
 610         do_refresh ();
 611
 612     return ok;
 613 }
 614
 615 /* --------------------------------------------------------------------------------------------- */
 616 /*** public functions ****************************************************************************/
 617 /* --------------------------------------------------------------------------------------------- */
 618
 619 gboolean
 620 view_file_at_line (const vfs_path_t * filename_vpath, int plain_view, int internal, long start_line)
 621 {
 622     static const char *viewer = NULL;
 623     gboolean ret = TRUE;
 624
 625     if (plain_view)
 626     {
 627         int changed_hex_mode = 0;
 628         int changed_nroff_flag = 0;
 629         int changed_magic_flag = 0;
 630
 631         mcview_altered_hex_mode = 0;
 632         mcview_altered_nroff_flag = 0;
 633         mcview_altered_magic_flag = 0;
 634         if (mcview_default_hex_mode)
 635             changed_hex_mode = 1;
 636         if (mcview_default_nroff_flag)
 637             changed_nroff_flag = 1;
 638         if (mcview_default_magic_flag)
 639             changed_magic_flag = 1;
 640         mcview_default_hex_mode = 0;
 641         mcview_default_nroff_flag = 0;
 642         mcview_default_magic_flag = 0;
 643
 644         ret = mcview_viewer (NULL, filename_vpath, start_line);
 645
 646         if (changed_hex_mode && !mcview_altered_hex_mode)
 647             mcview_default_hex_mode = 1;
 648         if (changed_nroff_flag && !mcview_altered_nroff_flag)
 649             mcview_default_nroff_flag = 1;
 650         if (changed_magic_flag && !mcview_altered_magic_flag)
 651             mcview_default_magic_flag = 1;
 652
 653         dialog_switch_process_pending ();
 654     }
 655     else if (internal)
 656     {
 657         char view_entry[BUF_TINY];
 658
 659         if (start_line != 0)
 660             g_snprintf (view_entry, sizeof (view_entry), "View:%ld", start_line);
 661         else
 662             strcpy (view_entry, "View");
 663
 664         ret = (regex_command (filename_vpath, view_entry) == 0);
 665         if (ret)
 666         {
 667             ret = mcview_viewer (NULL, filename_vpath, start_line);
 668             dialog_switch_process_pending ();
 669         }
 670     }
 671     else
 672     {
 673         if (viewer == NULL)
 674         {
 675             viewer = getenv ("VIEWER");
 676             if (viewer == NULL)
 677                 viewer = getenv ("PAGER");
 678             if (viewer == NULL)
 679                 viewer = "view";
 680         }
 681
 682         execute_external_editor_or_viewer (viewer, filename_vpath, start_line);
 683     }
 684
 685     return ret;
 686 }
 687
 688 /* --------------------------------------------------------------------------------------------- */
 689 /** view_file (filename, plain_view, internal)
 690  *
 691  * Inputs:
 692  *   filename_vpath: The file name to view
 693  *   plain_view:     If set does not do any fancy pre-processing (no filtering) and
 694  *                   always invokes the internal viewer.
 695  *   internal:       If set uses the internal viewer, otherwise an external viewer.
 696  */
 697
 698 gboolean
 699 view_file (const vfs_path_t * filename_vpath, int plain_view, int internal)
 700 {
 701     long line = 0;
 702
 703     if (!internal)
 704     {
 705         long column;
 706         off_t offset;
 707
 708         if (filename_vpath != NULL && *(vfs_path_get_by_index (filename_vpath, 0)->path) != '\0')
 709             load_file_position (filename_vpath, &line, &column, &offset, NULL);
 710     }
 711
 712     return view_file_at_line (filename_vpath, plain_view, internal, line);
 713 }
 714
 715
 716 /* --------------------------------------------------------------------------------------------- */
 717 /** Run user's preferred viewer on the currently selected file */
 718
 719 void
 720 view_cmd (void)
 721 {
 722     do_view_cmd (FALSE);
 723 }
 724
 725 /* --------------------------------------------------------------------------------------------- */
 726 /** Ask for file and run user's preferred viewer on it */
 727
 728 void
 729 view_file_cmd (void)
 730 {
 731     char *filename;
 732     vfs_path_t *vpath;
 733
 734     filename =
 735         input_expand_dialog (_("View file"), _("Filename:"),
 736                              MC_HISTORY_FM_VIEW_FILE, selection (current_panel)->fname,
 737                              INPUT_COMPLETE_FILENAMES);
 738     if (!filename)
 739         return;
 740
 741     vpath = vfs_path_from_str (filename);
 742     g_free (filename);
 743     view_file (vpath, 0, use_internal_view);
 744     vfs_path_free (vpath);
 745 }
 746
 747 /* --------------------------------------------------------------------------------------------- */
 748 /** Run plain internal viewer on the currently selected file */
 749 void
 750 view_raw_cmd (void)
 751 {
 752     do_view_cmd (TRUE);
 753 }
 754
 755 /* --------------------------------------------------------------------------------------------- */
 756
 757 void
 758 view_filtered_cmd (void)
 759 {
 760     char *command;
 761     const char *initial_command;
 762
 763     if (cmdline->buffer[0] == '\0')
 764         initial_command = selection (current_panel)->fname;
 765     else
 766         initial_command = cmdline->buffer;
 767
 768     command =
 769         input_dialog (_("Filtered view"),
 770                       _("Filter command and arguments:"),
 771                       MC_HISTORY_FM_FILTERED_VIEW, initial_command,
 772                       INPUT_COMPLETE_FILENAMES | INPUT_COMPLETE_COMMANDS);
 773
 774     if (command != NULL)
 775     {
 776         mcview_viewer (command, NULL, 0);
 777         g_free (command);
 778         dialog_switch_process_pending ();
 779     }
 780 }
 781
 782 /* --------------------------------------------------------------------------------------------- */
 783
 784 void
 785 do_edit_at_line (const vfs_path_t * what_vpath, gboolean internal, long start_line)
 786 {
 787     static const char *editor = NULL;
 788
 789 #ifdef USE_INTERNAL_EDIT
 790     if (internal)
 791         edit_file (what_vpath, start_line);
 792     else
 793 #endif /* USE_INTERNAL_EDIT */
 794     {
 795         if (editor == NULL)
 796         {
 797             editor = getenv ("EDITOR");
 798             if (editor == NULL)
 799                 editor = get_default_editor ();
 800         }
 801
 802         if (start_line < 1)
 803             start_line = 1;
 804
 805         execute_external_editor_or_viewer (editor, what_vpath, start_line);
 806     }
 807
 808     if (mc_global.mc_run_mode == MC_RUN_FULL)
 809         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 810
 811 #ifdef USE_INTERNAL_EDIT
 812     if (use_internal_edit)
 813         dialog_switch_process_pending ();
 814     else
 815 #endif /* USE_INTERNAL_EDIT */
 816         repaint_screen ();
 817 }
 818
 819 /* --------------------------------------------------------------------------------------------- */
 820
 821 void
 822 edit_cmd (void)
 823 {
 824     vfs_path_t *fname;
 825
 826     fname = vfs_path_from_str (selection (current_panel)->fname);
 827     if (regex_command (fname, "Edit") == 0)
 828         do_edit (fname);
 829     vfs_path_free (fname);
 830 }
 831
 832 /* --------------------------------------------------------------------------------------------- */
 833
 834 #ifdef USE_INTERNAL_EDIT
 835 void
 836 edit_cmd_force_internal (void)
 837 {
 838     vfs_path_t *fname;
 839
 840     fname = vfs_path_from_str (selection (current_panel)->fname);
 841     if (regex_command (fname, "Edit") == 0)
 842         do_edit_at_line (fname, TRUE, 0);
 843     vfs_path_free (fname);
 844 }
 845 #endif
 846
 847 /* --------------------------------------------------------------------------------------------- */
 848
 849 void
 850 edit_cmd_new (void)
 851 {
 852     vfs_path_t *fname_vpath = NULL;
 853
 854     if (editor_ask_filename_before_edit)
 855     {
 856         char *fname;
 857
 858         fname = input_expand_dialog (_("Edit file"), _("Enter file name:"),
 859                                      MC_HISTORY_EDIT_LOAD, "", INPUT_COMPLETE_FILENAMES);
 860         if (fname == NULL)
 861             return;
 862
 863         if (*fname != '\0')
 864             fname_vpath = vfs_path_from_str (fname);
 865
 866         g_free (fname);
 867     }
 868
 869 #ifdef HAVE_CHARSET
 870     mc_global.source_codepage = default_source_codepage;
 871 #endif
 872     do_edit (fname_vpath);
 873
 874     vfs_path_free (fname_vpath);
 875 }
 876
 877 /* --------------------------------------------------------------------------------------------- */
 878 /** Invoked by F5.  Copy, default to the other panel.  */
 879
 880 void
 881 copy_cmd (void)
 882 {
 883     save_cwds_stat ();
 884     if (panel_operate (current_panel, OP_COPY, FALSE))
 885     {
 886         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 887         repaint_screen ();
 888     }
 889 }
 890
 891 /* --------------------------------------------------------------------------------------------- */
 892 /** Invoked by F6.  Move/rename, default to the other panel, ignore marks.  */
 893
 894 void
 895 rename_cmd (void)
 896 {
 897     save_cwds_stat ();
 898     if (panel_operate (current_panel, OP_MOVE, FALSE))
 899     {
 900         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 901         repaint_screen ();
 902     }
 903 }
 904
 905 /* --------------------------------------------------------------------------------------------- */
 906 /** Invoked by F15.  Copy, default to the same panel, ignore marks.  */
 907
 908 void
 909 copy_cmd_local (void)
 910 {
 911     save_cwds_stat ();
 912     if (panel_operate (current_panel, OP_COPY, TRUE))
 913     {
 914         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 915         repaint_screen ();
 916     }
 917 }
 918
 919 /* --------------------------------------------------------------------------------------------- */
 920 /** Invoked by F16.  Move/rename, default to the same panel.  */
 921
 922 void
 923 rename_cmd_local (void)
 924 {
 925     save_cwds_stat ();
 926     if (panel_operate (current_panel, OP_MOVE, TRUE))
 927     {
 928         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 929         repaint_screen ();
 930     }
 931 }
 932
 933 /* --------------------------------------------------------------------------------------------- */
 934
 935 void
 936 mkdir_cmd (void)
 937 {
 938     char *dir;
 939     const char *name = "";
 940
 941     /* If 'on' then automatically fills name with current selected item name */
 942     if (auto_fill_mkdir_name && strcmp (selection (current_panel)->fname, "..") != 0)
 943         name = selection (current_panel)->fname;
 944
 945     dir =
 946         input_expand_dialog (_("Create a new Directory"),
 947                              _("Enter directory name:"), MC_HISTORY_FM_MKDIR, name,
 948                              INPUT_COMPLETE_FILENAMES);
 949
 950     if (dir != NULL && dir != '\0')
 951     {
 952         vfs_path_t *absdir;
 953
 954         if (dir[0] == '/' || dir[0] == '~')
 955             absdir = vfs_path_from_str (dir);
 956         else
 957         {
 958             /* possible escaped '~' */
 959             /* allow create directory with name '~' */
 960             char *tmpdir = dir;
 961
 962             if (dir[0] == '\\' && dir[1] == '~')
 963                 tmpdir = dir + 1;
 964
 965             absdir = vfs_path_append_new (current_panel->cwd_vpath, tmpdir, NULL);
 966         }
 967
 968         save_cwds_stat ();
 969         if (my_mkdir (absdir, 0777) == 0)
 970         {
 971             update_panels (UP_OPTIMIZE, dir);
 972             repaint_screen ();
 973             select_item (current_panel);
 974         }
 975         else
 976         {
 977             message (D_ERROR, MSG_ERROR, "%s", unix_error_string (errno));
 978         }
 979         vfs_path_free (absdir);
 980     }
 981     g_free (dir);
 982 }
 983
 984 /* --------------------------------------------------------------------------------------------- */
 985
 986 void
 987 delete_cmd (void)
 988 {
 989     save_cwds_stat ();
 990
 991     if (panel_operate (current_panel, OP_DELETE, FALSE))
 992     {
 993         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 994         repaint_screen ();
 995     }
 996 }
 997
 998 /* --------------------------------------------------------------------------------------------- */
 999 /** Invoked by F18.  Remove selected file, regardless of marked files.  */
1000
1001 void
1002 delete_cmd_local (void)
1003 {
1004     save_cwds_stat ();
1005
1006     if (panel_operate (current_panel, OP_DELETE, TRUE))
1007     {
1008         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
1009         repaint_screen ();
1010     }
1011 }
1012
1013 /* --------------------------------------------------------------------------------------------- */
1014
1015 void
1016 find_cmd (void)
1017 {
1018     find_file ();
1019 }
1020
1021 /* --------------------------------------------------------------------------------------------- */
1022 /** Invoked from the left/right menus */
1023
1024 void
1025 filter_cmd (void)
1026 {
1027     WPanel *p;
1028
1029     if (!SELECTED_IS_PANEL)
1030         return;
1031
1032     p = MENU_PANEL;
1033     set_panel_filter (p);
1034 }
1035
1036 /* --------------------------------------------------------------------------------------------- */
1037
1038 void
1039 reread_cmd (void)
1040 {
1041     panel_update_flags_t flag = UP_ONLY_CURRENT;
1042
1043     if (get_current_type () == view_listing && get_other_type () == view_listing &&
1044         vfs_path_cmp (current_panel->cwd_vpath, other_panel->cwd_vpath) == 0)
1045         flag = UP_OPTIMIZE;
1046
1047     update_panels (UP_RELOAD | flag, UP_KEEPSEL);
1048     repaint_screen ();
1049 }
1050
1051 /* --------------------------------------------------------------------------------------------- */
1052
1053 void
1054 select_invert_cmd (void)
1055 {
1056     int i;
1057     file_entry *file;
1058
1059     for (i = 0; i < current_panel->count; i++)
1060     {
1061         file = &current_panel->dir.list[i];
1062         if (!panels_options.reverse_files_only || !S_ISDIR (file->st.st_mode))
1063             do_file_mark (current_panel, i, !file->f.marked);
1064     }
1065 }
1066
1067 /* --------------------------------------------------------------------------------------------- */
1068
1069 void
1070 select_cmd (void)
1071 {
1072     select_unselect_cmd (_("Select"), ":select_cmd: Select ", TRUE);
1073 }
1074
1075 /* --------------------------------------------------------------------------------------------- */
1076
1077 void
1078 unselect_cmd (void)
1079 {
1080     select_unselect_cmd (_("Unselect"), ":unselect_cmd: Unselect ", FALSE);
1081 }
1082
1083 /* --------------------------------------------------------------------------------------------- */
1084
1085 void
1086 ext_cmd (void)
1087 {
1088     vfs_path_t *buffer_vpath;
1089     vfs_path_t *extdir_vpath;
1090     int dir;
1091
1092     dir = 0;
1093     if (geteuid () == 0)
1094     {
1095         dir = query_dialog (_("Extension file edit"),
1096                             _("Which extension file you want to edit?"), D_NORMAL, 2,
1097                             _("&User"), _("&System Wide"));
1098     }
1099     extdir_vpath = vfs_path_build_filename (mc_global.sysconfig_dir, MC_LIB_EXT, NULL);
1100
1101     if (dir == 0)
1102     {
1103         buffer_vpath = mc_config_get_full_vpath (MC_FILEBIND_FILE);
1104         check_for_default (extdir_vpath, buffer_vpath);
1105         do_edit (buffer_vpath);
1106         vfs_path_free (buffer_vpath);
1107     }
1108     else if (dir == 1)
1109     {
1110         if (!exist_file (vfs_path_get_last_path_str (extdir_vpath)))
1111         {
1112             vfs_path_free (extdir_vpath);
1113             extdir_vpath = vfs_path_build_filename (mc_global.share_data_dir, MC_LIB_EXT, NULL);
1114         }
1115         do_edit (extdir_vpath);
1116     }
1117     vfs_path_free (extdir_vpath);
1118     flush_extension_file ();
1119 }
1120
1121 /* --------------------------------------------------------------------------------------------- */
1122 /** edit file menu for mc */
1123
1124 void
1125 edit_mc_menu_cmd (void)
1126 {
1127     vfs_path_t *buffer_vpath;
1128     vfs_path_t *menufile_vpath;
1129     int dir = 0;
1130
1131     dir = query_dialog (_("Menu edit"),
1132                         _("Which menu file do you want to edit?"),
1133                         D_NORMAL, geteuid ()? 2 : 3, _("&Local"), _("&User"), _("&System Wide"));
1134
1135     menufile_vpath = vfs_path_build_filename (mc_global.sysconfig_dir, MC_GLOBAL_MENU, NULL);
1136
1137     if (!exist_file (vfs_path_get_last_path_str (menufile_vpath)))
1138     {
1139         vfs_path_free (menufile_vpath);
1140         menufile_vpath = vfs_path_build_filename (mc_global.share_data_dir, MC_GLOBAL_MENU, NULL);
1141     }
1142
1143     switch (dir)
1144     {
1145     case 0:
1146         buffer_vpath = vfs_path_from_str (MC_LOCAL_MENU);
1147         check_for_default (menufile_vpath, buffer_vpath);
1148         chmod (vfs_path_get_last_path_str (buffer_vpath), 0600);
1149         break;
1150
1151     case 1:
1152         buffer_vpath = mc_config_get_full_vpath (MC_USERMENU_FILE);
1153         check_for_default (menufile_vpath, buffer_vpath);
1154         break;
1155
1156     case 2:
1157         buffer_vpath = vfs_path_build_filename (mc_global.sysconfig_dir, MC_GLOBAL_MENU, NULL);
1158         if (!exist_file (vfs_path_get_last_path_str (buffer_vpath)))
1159         {
1160             vfs_path_free (buffer_vpath);
1161             buffer_vpath = vfs_path_build_filename (mc_global.share_data_dir, MC_GLOBAL_MENU, NULL);
1162         }
1163         break;
1164
1165     default:
1166         vfs_path_free (menufile_vpath);
1167         return;
1168     }
1169
1170     do_edit (buffer_vpath);
1171
1172     vfs_path_free (buffer_vpath);
1173     vfs_path_free (menufile_vpath);
1174 }
1175
1176 /* --------------------------------------------------------------------------------------------- */
1177
1178 void
1179 edit_fhl_cmd (void)
1180 {
1181     vfs_path_t *buffer_vpath = NULL;
1182     vfs_path_t *fhlfile_vpath = NULL;
1183
1184     int dir;
1185
1186     dir = 0;
1187     if (geteuid () == 0)
1188     {
1189         dir = query_dialog (_("Highlighting groups file edit"),
1190                             _("Which highlighting file you want to edit?"), D_NORMAL, 2,
1191                             _("&User"), _("&System Wide"));
1192     }
1193     fhlfile_vpath = vfs_path_build_filename (mc_global.sysconfig_dir, MC_FHL_INI_FILE, NULL);
1194
1195     if (dir == 0)
1196     {
1197         buffer_vpath = mc_config_get_full_vpath (MC_FHL_INI_FILE);
1198         check_for_default (fhlfile_vpath, buffer_vpath);
1199         do_edit (buffer_vpath);
1200         vfs_path_free (buffer_vpath);
1201     }
1202     else if (dir == 1)
1203     {
1204         if (!exist_file (vfs_path_get_last_path_str (fhlfile_vpath)))
1205         {
1206             vfs_path_free (fhlfile_vpath);
1207             fhlfile_vpath =
1208                 vfs_path_build_filename (mc_global.sysconfig_dir, MC_FHL_INI_FILE, NULL);
1209         }
1210         do_edit (fhlfile_vpath);
1211     }
1212     vfs_path_free (fhlfile_vpath);
1213
1214     /* refresh highlighting rules */
1215     mc_fhl_free (&mc_filehighlight);
1216     mc_filehighlight = mc_fhl_new (TRUE);
1217 }
1218
1219 /* --------------------------------------------------------------------------------------------- */
1220
1221 void
1222 hotlist_cmd (void)
1223 {
1224     char *target;
1225
1226     target = hotlist_show (LIST_HOTLIST);
1227     if (!target)
1228         return;
1229
1230     if (get_current_type () == view_tree)
1231         tree_chdir (the_tree, target);
1232     else
1233     {
1234         vfs_path_t *deprecated_vpath;
1235         char *cmd, *normalized_target;
1236
1237         deprecated_vpath = vfs_path_from_str_flags (target, VPF_USE_DEPRECATED_PARSER);
1238         normalized_target = vfs_path_to_str (deprecated_vpath);
1239         cmd = g_strconcat ("cd ", normalized_target, (char *) NULL);
1240         g_free (normalized_target);
1241         vfs_path_free (deprecated_vpath);
1242
1243         do_cd_command (cmd);
1244         g_free (cmd);
1245     }
1246     g_free (target);
1247 }
1248
1249 #ifdef ENABLE_VFS
1250 void
1251 vfs_list (void)
1252 {
1253     char *target;
1254     vfs_path_t *target_vpath;
1255
1256     target = hotlist_show (LIST_VFSLIST);
1257     if (!target)
1258         return;
1259
1260     target_vpath = vfs_path_from_str (target);
1261     if (!do_cd (target_vpath, cd_exact))
1262         message (D_ERROR, MSG_ERROR, _("Cannot change directory"));
1263     vfs_path_free (target_vpath);
1264     g_free (target);
1265 }
1266 #endif /* ENABLE_VFS */
1267
1268 /* --------------------------------------------------------------------------------------------- */
1269
1270 void
1271 compare_dirs_cmd (void)
1272 {
1273     int choice;
1274     enum CompareMode thorough_flag;
1275
1276     choice =
1277         query_dialog (_("Compare directories"),
1278                       _("Select compare method:"), D_NORMAL, 4,
1279                       _("&Quick"), _("&Size only"), _("&Thorough"), _("&Cancel"));
1280
1281     if (choice < 0 || choice > 2)
1282         return;
1283
1284     thorough_flag = choice;
1285
1286     if (get_current_type () == view_listing && get_other_type () == view_listing)
1287     {
1288         compare_dir (current_panel, other_panel, thorough_flag);
1289         compare_dir (other_panel, current_panel, thorough_flag);
1290     }
1291     else
1292     {
1293         message (D_ERROR, MSG_ERROR,
1294                  _("Both panels should be in the listing mode\nto use this command"));
1295     }
1296 }
1297
1298 /* --------------------------------------------------------------------------------------------- */
1299
1300 #ifdef USE_DIFF_VIEW
1301 void
1302 diff_view_cmd (void)
1303 {
1304     /* both panels must be in the list mode */
1305     if (get_current_type () != view_listing || get_other_type () != view_listing)
1306         return;
1307
1308     if (get_current_index () == 0)
1309         dview_diff_cmd (current_panel, other_panel);
1310     else
1311         dview_diff_cmd (other_panel, current_panel);
1312
1313     if (mc_global.mc_run_mode == MC_RUN_FULL)
1314         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
1315
1316     dialog_switch_process_pending ();
1317 }
1318 #endif
1319
1320 /* --------------------------------------------------------------------------------------------- */
1321
1322 void
1323 swap_cmd (void)
1324 {
1325     swap_panels ();
1326     tty_touch_screen ();
1327     repaint_screen ();
1328 }
1329
1330 /* --------------------------------------------------------------------------------------------- */
1331
1332 void
1333 view_other_cmd (void)
1334 {
1335     static int message_flag = TRUE;
1336
1337     if (!mc_global.tty.xterm_flag && mc_global.tty.console_flag == '\0'
1338         && !mc_global.tty.use_subshell && !output_starts_shell)
1339     {
1340         if (message_flag)
1341             message (D_ERROR, MSG_ERROR,
1342                      _("Not an xterm or Linux console;\nthe panels cannot be toggled."));
1343         message_flag = FALSE;
1344     }
1345     else
1346     {
1347         toggle_panels ();
1348     }
1349 }
1350
1351 /* --------------------------------------------------------------------------------------------- */
1352
1353 void
1354 link_cmd (link_type_t link_type)
1355 {
1356     char *filename = selection (current_panel)->fname;
1357
1358     if (filename != NULL)
1359         do_link (link_type, filename);
1360 }
1361
1362 /* --------------------------------------------------------------------------------------------- */
1363
1364 void
1365 edit_symlink_cmd (void)
1366 {
1367     if (S_ISLNK (selection (current_panel)->st.st_mode))
1368     {
1369         char buffer[MC_MAXPATHLEN];
1370         char *p = NULL;
1371         int i;
1372         char *dest, *q;
1373         vfs_path_t *p_vpath;
1374
1375         p = selection (current_panel)->fname;
1376         p_vpath = vfs_path_from_str (p);
1377
1378         q = g_strdup_printf (_("Symlink `%s\' points to:"), str_trunc (p, 32));
1379
1380         i = readlink (p, buffer, MC_MAXPATHLEN - 1);
1381         if (i > 0)
1382         {
1383             buffer[i] = 0;
1384             dest =
1385                 input_expand_dialog (_("Edit symlink"), q, MC_HISTORY_FM_EDIT_LINK, buffer,
1386                                      INPUT_COMPLETE_FILENAMES);
1387             if (dest)
1388             {
1389                 if (*dest && strcmp (buffer, dest))
1390                 {
1391                     save_cwds_stat ();
1392                     if (mc_unlink (p_vpath) == -1)
1393                     {
1394                         message (D_ERROR, MSG_ERROR, _("edit symlink, unable to remove %s: %s"),
1395                                  p, unix_error_string (errno));
1396                     }
1397                     else
1398                     {
1399                         vfs_path_t *dest_vpath;
1400
1401                         dest_vpath = vfs_path_from_str_flags (dest, VPF_NO_CANON);
1402                         if (mc_symlink (dest_vpath, p_vpath) == -1)
1403                             message (D_ERROR, MSG_ERROR, _("edit symlink: %s"),
1404                                      unix_error_string (errno));
1405                         vfs_path_free (dest_vpath);
1406                     }
1407                     update_panels (UP_OPTIMIZE, UP_KEEPSEL);
1408                     repaint_screen ();
1409                 }
1410                 g_free (dest);
1411             }
1412         }
1413         g_free (q);
1414         vfs_path_free (p_vpath);
1415     }
1416     else
1417     {
1418         message (D_ERROR, MSG_ERROR, _("`%s' is not a symbolic link"),
1419                  selection (current_panel)->fname);
1420     }
1421 }
1422
1423 /* --------------------------------------------------------------------------------------------- */
1424
1425 void
1426 help_cmd (void)
1427 {
1428     ev_help_t event_data = { NULL, NULL };
1429
1430     if (current_panel->searching)
1431         event_data.node = "[Quick search]";
1432     else
1433         event_data.node = "[main]";
1434
1435     mc_event_raise (MCEVENT_GROUP_CORE, "help", &event_data);
1436 }
1437
1438 /* --------------------------------------------------------------------------------------------- */
1439
1440 void
1441 user_file_menu_cmd (void)
1442 {
1443     (void) user_menu_cmd (NULL, NULL, -1);
1444 }
1445
1446 /* --------------------------------------------------------------------------------------------- */
1447 /**
1448  * Return a random hint.  If force is not 0, ignore the timeout.
1449  */
1450
1451 char *
1452 get_random_hint (int force)
1453 {
1454     char *data, *result = NULL, *eol;
1455     int len;
1456     int start;
1457     static int last_sec;
1458     static struct timeval tv;
1459     GIConv conv;
1460
1461     /* Do not change hints more often than one minute */
1462     gettimeofday (&tv, NULL);
1463     if (!force && !(tv.tv_sec > last_sec + 60))
1464         return g_strdup ("");
1465     last_sec = tv.tv_sec;
1466
1467     data = load_mc_home_file (mc_global.share_data_dir, MC_HINT, NULL);
1468     if (data == NULL)
1469         return NULL;
1470
1471     /* get a random entry */
1472     srand (tv.tv_sec);
1473     len = strlen (data);
1474     start = rand () % len;
1475
1476     for (; start != 0; start--)
1477         if (data[start] == '\n')
1478         {
1479             start++;
1480             break;
1481         }
1482
1483     eol = strchr (data + start, '\n');
1484     if (eol != NULL)
1485         *eol = '\0';
1486
1487     /* hint files are stored in utf-8 */
1488     /* try convert hint file from utf-8 to terminal encoding */
1489     conv = str_crt_conv_from ("UTF-8");
1490     if (conv != INVALID_CONV)
1491     {
1492         GString *buffer;
1493
1494         buffer = g_string_new ("");
1495         if (str_convert (conv, &data[start], buffer) != ESTR_FAILURE)
1496             result = g_string_free (buffer, FALSE);
1497         else
1498             g_string_free (buffer, TRUE);
1499         str_close_conv (conv);
1500     }
1501
1502     g_free (data);
1503     return result;
1504 }
1505
1506 /* --------------------------------------------------------------------------------------------- */
1507
1508 #ifdef ENABLE_VFS_FTP
1509 void
1510 ftplink_cmd (void)
1511 {
1512     nice_cd (_("FTP to machine"), _(machine_str),
1513              "[FTP File System]", ":ftplink_cmd: FTP to machine ", "ftp://", 1, TRUE);
1514 }
1515 #endif /* ENABLE_VFS_FTP */
1516
1517 /* --------------------------------------------------------------------------------------------- */
1518
1519 #ifdef ENABLE_VFS_SFTP
1520 void
1521 sftplink_cmd (void)
1522 {
1523     nice_cd (_("SFTP to machine"), _(machine_str),
1524              "[SFTP (SSH File Transfer Protocol) filesystem]",
1525              ":sftplink_cmd: SFTP to machine ", "sftp://", 1, TRUE);
1526 }
1527 #endif /* ENABLE_VFS_SFTP */
1528
1529 /* --------------------------------------------------------------------------------------------- */
1530
1531 #ifdef ENABLE_VFS_FISH
1532 void
1533 fishlink_cmd (void)
1534 {
1535     nice_cd (_("Shell link to machine"), _(machine_str),
1536              "[FIle transfer over SHell filesystem]", ":fishlink_cmd: Shell link to machine ",
1537              "sh://", 1, TRUE);
1538 }
1539 #endif /* ENABLE_VFS_FISH */
1540
1541 /* --------------------------------------------------------------------------------------------- */
1542
1543 #ifdef ENABLE_VFS_SMB
1544 void
1545 smblink_cmd (void)
1546 {
1547     nice_cd (_("SMB link to machine"), _(machine_str),
1548              "[SMB File System]", ":smblink_cmd: SMB link to machine ", "smb://", 0, TRUE);
1549 }
1550 #endif /* ENABLE_VFS_SMB */
1551
1552 /* --------------------------------------------------------------------------------------------- */
1553
1554 #ifdef ENABLE_VFS_UNDELFS
1555 void
1556 undelete_cmd (void)
1557 {
1558     nice_cd (_("Undelete files on an ext2 file system"),
1559              _("Enter device (without /dev/) to undelete\nfiles on: (F1 for details)"),
1560              "[Undelete File System]", ":undelete_cmd: Undel on ext2 fs ", "undel://", 0, FALSE);
1561 }
1562 #endif /* ENABLE_VFS_UNDELFS */
1563
1564 /* --------------------------------------------------------------------------------------------- */
1565
1566 void
1567 quick_cd_cmd (void)
1568 {
1569     char *p = cd_dialog ();
1570
1571     if (p && *p)
1572     {
1573         char *q = g_strconcat ("cd ", p, (char *) NULL);
1574
1575         do_cd_command (q);
1576         g_free (q);
1577     }
1578     g_free (p);
1579 }
1580
1581 /* --------------------------------------------------------------------------------------------- */
1582 /*!
1583    \brief calculate dirs sizes
1584
1585    calculate dirs sizes and resort panel:
1586    dirs_selected = show size for selected dirs,
1587    otherwise = show size for dir under cursor:
1588    dir under cursor ".." = show size for all dirs,
1589    otherwise = show size for dir under cursor
1590  */
1591
1592 void
1593 smart_dirsize_cmd (void)
1594 {
1595     WPanel *panel = current_panel;
1596     file_entry *entry;
1597
1598     entry = &(panel->dir.list[panel->selected]);
1599     if ((S_ISDIR (entry->st.st_mode) && (strcmp (entry->fname, "..") == 0)) || panel->dirs_marked)
1600         dirsizes_cmd ();
1601     else
1602         single_dirsize_cmd ();
1603 }
1604
1605 /* --------------------------------------------------------------------------------------------- */
1606
1607 void
1608 single_dirsize_cmd (void)
1609 {
1610     WPanel *panel = current_panel;
1611     file_entry *entry;
1612
1613     entry = &(panel->dir.list[panel->selected]);
1614     if (S_ISDIR (entry->st.st_mode) && strcmp (entry->fname, "..") != 0)
1615     {
1616         size_t marked = 0;
1617         uintmax_t total = 0;
1618         ComputeDirSizeUI *ui;
1619         vfs_path_t *p;
1620
1621         ui = compute_dir_size_create_ui ();
1622         p = vfs_path_from_str (entry->fname);
1623
1624         if (compute_dir_size (p, ui, compute_dir_size_update_ui, &marked, &total, TRUE) ==
1625             FILE_CONT)
1626         {
1627             entry->st.st_size = (off_t) total;
1628             entry->f.dir_size_computed = 1;
1629         }
1630
1631         vfs_path_free (p);
1632         compute_dir_size_destroy_ui (ui);
1633     }
1634
1635     if (panels_options.mark_moves_down)
1636         send_message (panel, NULL, MSG_ACTION, CK_Down, NULL);
1637
1638     recalculate_panel_summary (panel);
1639
1640     if (current_panel->sort_info.sort_field->sort_routine == (sortfn *) sort_size)
1641         panel_re_sort (panel);
1642
1643     panel->dirty = 1;
1644 }
1645
1646 /* --------------------------------------------------------------------------------------------- */
1647
1648 void
1649 dirsizes_cmd (void)
1650 {
1651     WPanel *panel = current_panel;
1652     int i;
1653     ComputeDirSizeUI *ui;
1654
1655     ui = compute_dir_size_create_ui ();
1656
1657     for (i = 0; i < panel->count; i++)
1658         if (S_ISDIR (panel->dir.list[i].st.st_mode)
1659             && ((panel->dirs_marked && panel->dir.list[i].f.marked)
1660                 || !panel->dirs_marked) && strcmp (panel->dir.list[i].fname, "..") != 0)
1661         {
1662             vfs_path_t *p;
1663             size_t marked = 0;
1664             uintmax_t total = 0;
1665             gboolean ok;
1666
1667             p = vfs_path_from_str (panel->dir.list[i].fname);
1668             ok = compute_dir_size (p, ui, compute_dir_size_update_ui, &marked, &total,
1669                                    TRUE) != FILE_CONT;
1670             vfs_path_free (p);
1671
1672             if (ok)
1673                 break;
1674
1675             panel->dir.list[i].st.st_size = (off_t) total;
1676             panel->dir.list[i].f.dir_size_computed = 1;
1677         }
1678
1679     compute_dir_size_destroy_ui (ui);
1680
1681     recalculate_panel_summary (panel);
1682
1683     if (current_panel->sort_info.sort_field->sort_routine == (sortfn *) sort_size)
1684         panel_re_sort (panel);
1685
1686     panel->dirty = 1;
1687 }
1688
1689 /* --------------------------------------------------------------------------------------------- */
1690
1691 void
1692 save_setup_cmd (void)
1693 {
1694     vfs_path_t *vpath;
1695     char *path;
1696
1697     vpath = mc_config_get_full_vpath (MC_CONFIG_FILE);
1698     path = vfs_path_to_str_flags (vpath, 0, VPF_STRIP_HOME);
1699     vfs_path_free (vpath);
1700
1701     if (save_setup (TRUE, TRUE))
1702         message (D_NORMAL, _("Setup"), _("Setup saved to %s"), path);
1703     else
1704         message (D_ERROR, _("Setup"), _("Unable to save setup to %s"), path);
1705     g_free (path);
1706 }
1707
1708 /* --------------------------------------------------------------------------------------------- */
1709
1710 void
1711 info_cmd_no_menu (void)
1712 {
1713     if (get_display_type (0) == view_info)
1714         set_display_type (0, view_listing);
1715     else if (get_display_type (1) == view_info)
1716         set_display_type (1, view_listing);
1717     else
1718         set_display_type (current_panel == left_panel ? 1 : 0, view_info);
1719 }
1720
1721 /* --------------------------------------------------------------------------------------------- */
1722
1723 void
1724 quick_cmd_no_menu (void)
1725 {
1726     if (get_display_type (0) == view_quick)
1727         set_display_type (0, view_listing);
1728     else if (get_display_type (1) == view_quick)
1729         set_display_type (1, view_listing);
1730     else
1731         set_display_type (current_panel == left_panel ? 1 : 0, view_quick);
1732 }
1733
1734 /* --------------------------------------------------------------------------------------------- */
1735
1736 void
1737 listing_cmd (void)
1738 {
1739     switch_to_listing (MENU_PANEL_IDX);
1740 }
1741
1742 /* --------------------------------------------------------------------------------------------- */
1743
1744 void
1745 change_listing_cmd (void)
1746 {
1747     int list_type;
1748     int use_msformat;
1749     char *user, *status;
1750     WPanel *p = NULL;
1751
1752     if (get_display_type (MENU_PANEL_IDX) == view_listing)
1753         p = MENU_PANEL_IDX == 0 ? left_panel : right_panel;
1754
1755     list_type = panel_listing_box (p, &user, &status, &use_msformat, MENU_PANEL_IDX);
1756     if (list_type != -1)
1757     {
1758         switch_to_listing (MENU_PANEL_IDX);
1759         p = MENU_PANEL_IDX == 0 ? left_panel : right_panel;
1760         configure_panel_listing (p, list_type, use_msformat, user, status);
1761     }
1762 }
1763
1764 /* --------------------------------------------------------------------------------------------- */
1765
1766 void
1767 panel_tree_cmd (void)
1768 {
1769     set_display_type (MENU_PANEL_IDX, view_tree);
1770 }
1771
1772 /* --------------------------------------------------------------------------------------------- */
1773
1774 void
1775 info_cmd (void)
1776 {
1777     set_display_type (MENU_PANEL_IDX, view_info);
1778 }
1779
1780 /* --------------------------------------------------------------------------------------------- */
1781
1782 void
1783 quick_view_cmd (void)
1784 {
1785     if ((WPanel *) get_panel_widget (MENU_PANEL_IDX) == current_panel)
1786         change_panel ();
1787     set_display_type (MENU_PANEL_IDX, view_quick);
1788 }
1789
1790 /* --------------------------------------------------------------------------------------------- */
1791
1792 void
1793 toggle_listing_cmd (void)
1794 {
1795     int current = get_current_index ();
1796     WPanel *p = (WPanel *) get_panel_widget (current);
1797
1798     set_basic_panel_listing_to (current, (p->list_type + 1) % LIST_TYPES);
1799 }
1800
1801 /* --------------------------------------------------------------------------------------------- */
1802
1803 #ifdef HAVE_CHARSET
1804 void
1805 encoding_cmd (void)
1806 {
1807     if (SELECTED_IS_PANEL)
1808         panel_change_encoding (MENU_PANEL);
1809 }
1810 #endif
1811
1812 /* --------------------------------------------------------------------------------------------- */