src/args.c

   1 /*
   2    Handle command line arguments.
   3
   4    Copyright (C) 2009-2017
   5    Free Software Foundation, Inc.
   6
   7    Written by:
   8    Slava Zanko <slavazanko@gmail.com>, 2009.
   9    Andrew Borodin <aborodin@vmail.ru>, 2011, 2012.
  10
  11    This file is part of the Midnight Commander.
  12
  13    The Midnight Commander is free software: you can redistribute it
  14    and/or modify it under the terms of the GNU General Public License as
  15    published by the Free Software Foundation, either version 3 of the License,
  16    or (at your option) any later version.
  17
  18    The Midnight Commander is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  25  */
  26
  27 #include <config.h>
  28 #include <stdlib.h>
  29 #include <stdio.h>
  30
  31 #include "lib/global.h"
  32 #include "lib/tty/tty.h"
  33 #include "lib/strutil.h"
  34 #include "lib/vfs/vfs.h"
  35 #include "lib/util.h"           /* x_basename() */
  36
  37 #ifdef ENABLE_VFS_SMB
  38 #include "src/vfs/smbfs/smbfs.h"        /* smbfs_set_debugf()  */
  39 #endif
  40
  41 #include "src/textconf.h"
  42
  43 #include "src/args.h"
  44
  45 /*** external variables **************************************************************************/
  46
  47 /*** global variables ****************************************************************************/
  48
  49 /* If true, assume we are running on an xterm terminal */
  50 gboolean mc_args__force_xterm = FALSE;
  51
  52 gboolean mc_args__nomouse = FALSE;
  53
  54 /* Force colors, only used by Slang */
  55 gboolean mc_args__force_colors = FALSE;
  56
  57 /* Don't load keymap from file and use default one */
  58 gboolean mc_args__nokeymap = FALSE;
  59
  60 char *mc_args__last_wd_file = NULL;
  61
  62 /* when enabled NETCODE, use folowing file as logfile */
  63 char *mc_args__netfs_logfile = NULL;
  64
  65 /* keymap file */
  66 char *mc_args__keymap_file = NULL;
  67
  68 /* Debug level */
  69 #ifdef ENABLE_VFS_SMB
  70 int mc_args__debug_level = 0;
  71 #endif
  72
  73 void *mc_run_param0 = NULL;
  74 char *mc_run_param1 = NULL;
  75
  76 /*** file scope macro definitions ****************************************************************/
  77
  78 /*** file scope type declarations ****************************************************************/
  79
  80 /*** file scope variables ************************************************************************/
  81
  82 /* If true, show version info and exit */
  83 static gboolean mc_args__show_version = FALSE;
  84
  85 /* forward declarations */
  86 static gboolean parse_mc_e_argument (const gchar * option_name, const gchar * value,
  87                                      gpointer data, GError ** mcerror);
  88 static gboolean parse_mc_v_argument (const gchar * option_name, const gchar * value,
  89                                      gpointer data, GError ** mcerror);
  90
  91 static GOptionContext *context;
  92
  93 #ifdef ENABLE_SUBSHELL
  94 static gboolean mc_args__nouse_subshell = FALSE;
  95 #endif /* ENABLE_SUBSHELL */
  96 static gboolean mc_args__show_datadirs = FALSE;
  97 static gboolean mc_args__show_datadirs_extended = FALSE;
  98 static gboolean mc_args__show_configure_opts = FALSE;
  99
 100 static GOptionGroup *main_group;
 101
 102 static const GOptionEntry argument_main_table[] = {
 103     /* *INDENT-OFF* */
 104     /* generic options */
 105     {
 106      "version", 'V', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 107      &mc_args__show_version,
 108      N_("Displays the current version"),
 109      NULL
 110     },
 111
 112     /* options for wrappers */
 113     {
 114      "datadir", 'f', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 115      &mc_args__show_datadirs,
 116      N_("Print data directory"),
 117      NULL
 118     },
 119
 120     /* show extended information about used data directories */
 121     {
 122      "datadir-info", 'F', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 123      &mc_args__show_datadirs_extended,
 124      N_("Print extended info about used data directories"),
 125      NULL
 126     },
 127
 128     /* show configure options */
 129     {
 130      "configure-options", '\0', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 131      &mc_args__show_configure_opts,
 132      N_("Print configure options"),
 133      NULL
 134     },
 135
 136     {
 137      "printwd", 'P', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_STRING,
 138      &mc_args__last_wd_file,
 139      N_("Print last working directory to specified file"),
 140      "<file>"
 141     },
 142
 143 #ifdef ENABLE_SUBSHELL
 144     {
 145      "subshell", 'U', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 146      &mc_global.tty.use_subshell,
 147      N_("Enables subshell support (default)"),
 148      NULL
 149     },
 150
 151     {
 152      "nosubshell", 'u', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 153      &mc_args__nouse_subshell,
 154      N_("Disables subshell support"),
 155      NULL
 156     },
 157 #endif
 158
 159     /* debug options */
 160 #ifdef ENABLE_VFS_FTP
 161     {
 162      "ftplog", 'l', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_STRING,
 163      &mc_args__netfs_logfile,
 164      N_("Log ftp dialog to specified file"),
 165      "<file>"
 166     },
 167 #endif /* ENABLE_VFS_FTP */
 168 #ifdef ENABLE_VFS_SMB
 169     {
 170      "debuglevel", 'D', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_INT,
 171      &mc_args__debug_level,
 172      N_("Set debug level"),
 173      "<integer>"
 174     },
 175 #endif /* ENABLE_VFS_SMB */
 176
 177     {
 178      /* handle arguments manually */
 179      "view", 'v', G_OPTION_FLAG_IN_MAIN | G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
 180      (gpointer) parse_mc_v_argument,
 181      N_("Launches the file viewer on a file"),
 182      "<file>"
 183     },
 184
 185     {
 186      /* handle arguments manually */
 187      "edit", 'e', G_OPTION_FLAG_IN_MAIN | G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
 188      (gpointer) parse_mc_e_argument,
 189      N_("Edit files"),
 190      "<file> ..." },
 191
 192     {
 193      NULL, '\0', 0, 0, NULL, NULL, NULL /* Complete struct initialization */
 194     }
 195     /* *INDENT-ON* */
 196 };
 197
 198 static GOptionGroup *terminal_group;
 199 #define ARGS_TERM_OPTIONS 0
 200 static const GOptionEntry argument_terminal_table[] = {
 201     /* *INDENT-OFF* */
 202     /* terminal options */
 203     {
 204      "xterm", 'x', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 205      &mc_args__force_xterm,
 206      N_("Forces xterm features"),
 207      NULL
 208     },
 209
 210     {
 211      "no-x11", 'X', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 212      &mc_global.tty.disable_x11,
 213      N_("Disable X11 support"),
 214      NULL
 215     },
 216
 217     {
 218      "oldmouse", 'g', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 219      &mc_global.tty.old_mouse,
 220      N_("Tries to use an old highlight mouse tracking"),
 221      NULL
 222     },
 223
 224     {
 225      "nomouse", 'd', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 226      &mc_args__nomouse,
 227      N_("Disable mouse support in text version"),
 228      NULL
 229     },
 230
 231 #ifdef HAVE_SLANG
 232     {
 233      "termcap", 't', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 234      &SLtt_Try_Termcap,
 235      N_("Tries to use termcap instead of terminfo"),
 236      NULL
 237     },
 238 #endif
 239
 240     {
 241      "slow", 's', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 242      &mc_global.tty.slow_terminal,
 243      N_("To run on slow terminals"),
 244      NULL
 245     },
 246
 247     {
 248      "stickchars", 'a', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 249      &mc_global.tty.ugly_line_drawing,
 250      N_("Use stickchars to draw"),
 251      NULL
 252     },
 253
 254 #ifdef HAVE_SLANG
 255     {
 256      "resetsoft", 'k', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 257      &reset_hp_softkeys,
 258      N_("Resets soft keys on HP terminals"),
 259      NULL
 260     },
 261 #endif
 262
 263     {
 264      "keymap", 'K', ARGS_TERM_OPTIONS, G_OPTION_ARG_STRING,
 265      &mc_args__keymap_file,
 266      N_("Load definitions of key bindings from specified file"),
 267      "<file>"
 268     },
 269
 270     {
 271      "nokeymap", '\0', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 272      &mc_args__nokeymap,
 273      N_("Don't load definitions of key bindings from file, use defaults"),
 274      NULL
 275     },
 276
 277     {
 278      NULL, '\0', 0, 0, NULL, NULL, NULL /* Complete struct initialization */
 279     }
 280     /* *INDENT-ON* */
 281 };
 282
 283 #undef ARGS_TERM_OPTIONS
 284
 285 static GOptionGroup *color_group;
 286 #define ARGS_COLOR_OPTIONS 0
 287 /* #define ARGS_COLOR_OPTIONS G_OPTION_FLAG_IN_MAIN */
 288 static const GOptionEntry argument_color_table[] = {
 289     /* *INDENT-OFF* */
 290     /* color options */
 291     {
 292      "nocolor", 'b', ARGS_COLOR_OPTIONS, G_OPTION_ARG_NONE,
 293      &mc_global.tty.disable_colors,
 294      N_("Requests to run in black and white"),
 295      NULL
 296     },
 297
 298     {
 299      "color", 'c', ARGS_COLOR_OPTIONS, G_OPTION_ARG_NONE,
 300      &mc_args__force_colors,
 301      N_("Request to run in color mode"),
 302      NULL
 303     },
 304
 305     {
 306      "colors", 'C', ARGS_COLOR_OPTIONS, G_OPTION_ARG_STRING,
 307      &mc_global.tty.command_line_colors,
 308      N_("Specifies a color configuration"),
 309      "<string>"
 310     },
 311
 312     {
 313      "skin", 'S', ARGS_COLOR_OPTIONS, G_OPTION_ARG_STRING,
 314      &mc_global.tty.skin,
 315      N_("Show mc with specified skin"),
 316      "<string>"
 317     },
 318
 319     {
 320      NULL, '\0', 0, 0, NULL, NULL, NULL /* Complete struct initialization */
 321     }
 322     /* *INDENT-ON* */
 323 };
 324
 325 #undef ARGS_COLOR_OPTIONS
 326
 327 static gchar *mc_args__loc__colors_string = NULL;
 328 static gchar *mc_args__loc__footer_string = NULL;
 329 static gchar *mc_args__loc__header_string = NULL;
 330 static gchar *mc_args__loc__usage_string = NULL;
 331
 332 /*** file scope functions ************************************************************************/
 333
 334 /* --------------------------------------------------------------------------------------------- */
 335 static void
 336 mc_args_clean_temp_help_strings (void)
 337 {
 338     MC_PTR_FREE (mc_args__loc__colors_string);
 339     MC_PTR_FREE (mc_args__loc__footer_string);
 340     MC_PTR_FREE (mc_args__loc__header_string);
 341     MC_PTR_FREE (mc_args__loc__usage_string);
 342 }
 343
 344 /* --------------------------------------------------------------------------------------------- */
 345
 346 static GOptionGroup *
 347 mc_args_new_color_group (void)
 348 {
 349 /* *INDENT-OFF* */
 350     /* FIXME: to preserve translations, lines should be split. */
 351     mc_args__loc__colors_string = g_strdup_printf ("%s\n%s",
 352                                                    /* TRANSLATORS: don't translate keywords */
 353                                                    _("--colors KEYWORD={FORE},{BACK},{ATTR}:KEYWORD2=...\n\n"
 354                                                      "{FORE}, {BACK} and {ATTR} can be omitted, and the default will be used\n"
 355                                                      "\n Keywords:\n"
 356                                                      "   Global:       errors, disabled, reverse, gauge, header\n"
 357                                                      "                 input, inputmark, inputunchanged, commandlinemark\n"
 358                                                      "                 bbarhotkey, bbarbutton, statusbar\n"
 359                                                      "   File display: normal, selected, marked, markselect\n"
 360                                                      "   Dialog boxes: dnormal, dfocus, dhotnormal, dhotfocus, errdhotnormal,\n"
 361                                                      "                 errdhotfocus\n"
 362                                                      "   Menus:        menunormal, menuhot, menusel, menuhotsel, menuinactive\n"
 363                                                      "   Popup menus:  pmenunormal, pmenusel, pmenutitle\n"
 364                                                      "   Editor:       editnormal, editbold, editmarked, editwhitespace,\n"
 365                                                      "                 editlinestate, editbg, editframe, editframeactive\n"
 366                                                      "                 editframedrag\n"
 367                                                      "   Viewer:       viewnormal,viewbold, viewunderline, viewselected\n"
 368                                                      "   Help:         helpnormal, helpitalic, helpbold, helplink, helpslink\n"),
 369                                                    /* TRANSLATORS: don't translate color names and attributes */
 370                                                    _("Standard Colors:\n"
 371                                                     "   black, gray, red, brightred, green, brightgreen, brown,\n"
 372                                                     "   yellow, blue, brightblue, magenta, brightmagenta, cyan,\n"
 373                                                     "   brightcyan, lightgray and white\n\n"
 374                                                     "Extended colors, when 256 colors are available:\n"
 375                                                     "   color16 to color255, or rgb000 to rgb555 and gray0 to gray23\n\n"
 376                                                     "Attributes:\n"
 377                                                     "   bold, italic, underline, reverse, blink; append more with '+'\n")
 378                                                     );
 379 /* *INDENT-ON* */
 380
 381     return g_option_group_new ("color", mc_args__loc__colors_string,
 382                                _("Color options"), NULL, NULL);
 383
 384 }
 385
 386 /* --------------------------------------------------------------------------------------------- */
 387
 388 static gchar *
 389 mc_args_add_usage_info (void)
 390 {
 391     mc_args__loc__usage_string = g_strdup_printf ("[%s] %s\n %s - %s\n",
 392                                                   _("+number"),
 393                                                   _("[this_dir] [other_panel_dir]"),
 394                                                   _("+number"),
 395                                                   _
 396                                                   ("Set initial line number for the internal editor"));
 397     return mc_args__loc__usage_string;
 398 }
 399
 400 /* --------------------------------------------------------------------------------------------- */
 401
 402 static void
 403 mc_args_add_extended_info_to_help (void)
 404 {
 405     mc_args__loc__footer_string = g_strdup_printf ("%s",
 406                                                    _
 407                                                    ("\n"
 408                                                     "Please send any bug reports (including the output of 'mc -V')\n"
 409                                                     "as tickets at www.midnight-commander.org\n"));
 410     mc_args__loc__header_string = g_strdup_printf (_("GNU Midnight Commander %s\n"), VERSION);
 411
 412     g_option_context_set_description (context, mc_args__loc__footer_string);
 413     g_option_context_set_summary (context, mc_args__loc__header_string);
 414 }
 415
 416 /* --------------------------------------------------------------------------------------------- */
 417
 418 static gchar *
 419 mc_args__convert_help_to_syscharset (const gchar * charset, const gchar * error_message_str,
 420                                      const gchar * help_str)
 421 {
 422     GString *buffer;
 423     GIConv conv;
 424     gchar *full_help_str;
 425
 426     buffer = g_string_new ("");
 427     conv = g_iconv_open (charset, "UTF-8");
 428     full_help_str = g_strdup_printf ("%s\n\n%s\n", error_message_str, help_str);
 429
 430     str_convert (conv, full_help_str, buffer);
 431
 432     g_free (full_help_str);
 433     g_iconv_close (conv);
 434
 435     return g_string_free (buffer, FALSE);
 436 }
 437
 438 /* --------------------------------------------------------------------------------------------- */
 439
 440 static gboolean
 441 parse_mc_e_argument (const gchar * option_name, const gchar * value, gpointer data,
 442                      GError ** mcerror)
 443 {
 444     (void) option_name;
 445     (void) value;
 446     (void) data;
 447
 448     mc_return_val_if_error (mcerror, FALSE);
 449
 450     mc_global.mc_run_mode = MC_RUN_EDITOR;
 451
 452     return TRUE;
 453 }
 454
 455 /* --------------------------------------------------------------------------------------------- */
 456
 457 static gboolean
 458 parse_mc_v_argument (const gchar * option_name, const gchar * value, gpointer data,
 459                      GError ** mcerror)
 460 {
 461     (void) option_name;
 462     (void) value;
 463     (void) data;
 464
 465     mc_return_val_if_error (mcerror, FALSE);
 466
 467     mc_global.mc_run_mode = MC_RUN_VIEWER;
 468
 469     return TRUE;
 470 }
 471
 472 /* --------------------------------------------------------------------------------------------- */
 473 /**
 474  * Create mcedit_arg_t object from vfs_path_t object and the line number.
 475  *
 476  * @param file_vpath  file path object
 477  * @param line_number line number. If value is 0, try to restore saved position.
 478  * @return mcedit_arg_t object
 479  */
 480
 481 static mcedit_arg_t *
 482 mcedit_arg_vpath_new (vfs_path_t * file_vpath, long line_number)
 483 {
 484     mcedit_arg_t *arg;
 485
 486     arg = g_new (mcedit_arg_t, 1);
 487     arg->file_vpath = file_vpath;
 488     arg->line_number = line_number;
 489
 490     return arg;
 491 }
 492
 493 /* --------------------------------------------------------------------------------------------- */
 494 /**
 495  * Create mcedit_arg_t object from file name and the line number.
 496  *
 497  * @param file_name   file name
 498  * @param line_number line number. If value is 0, try to restore saved position.
 499  * @return mcedit_arg_t object
 500  */
 501
 502 static mcedit_arg_t *
 503 mcedit_arg_new (const char *file_name, long line_number)
 504 {
 505     return mcedit_arg_vpath_new (vfs_path_from_str (file_name), line_number);
 506 }
 507
 508 /* --------------------------------------------------------------------------------------------- */
 509 /**
 510  * Get list of filenames (and line numbers) from command line, when mc called as editor
 511  *
 512  * @param argc count of all arguments
 513  * @param argv array of strings, contains arguments
 514  * @return list of mcedit_arg_t objects
 515  */
 516
 517 static GList *
 518 parse_mcedit_arguments (int argc, char **argv)
 519 {
 520     GList *flist = NULL;
 521     int i;
 522     long first_line_number = -1;
 523
 524     for (i = 0; i < argc; i++)
 525     {
 526         char *tmp;
 527         char *end, *p;
 528         mcedit_arg_t *arg;
 529
 530         tmp = argv[i];
 531
 532         /*
 533          * First, try to get line number as +lineno.
 534          */
 535         if (*tmp == '+')
 536         {
 537             long lineno;
 538             char *error;
 539
 540             lineno = strtol (tmp + 1, &error, 10);
 541
 542             if (*error == '\0')
 543             {
 544                 /* this is line number */
 545                 first_line_number = lineno;
 546                 continue;
 547             }
 548             /* this is file name */
 549         }
 550
 551         /*
 552          * Check for filename:lineno, followed by an optional colon.
 553          * This format is used by many programs (especially compilers)
 554          * in error messages and warnings. It is supported so that
 555          * users can quickly copy and paste file locations.
 556          */
 557         end = tmp + strlen (tmp);
 558         p = end;
 559
 560         if (p > tmp && p[-1] == ':')
 561             p--;
 562         while (p > tmp && g_ascii_isdigit ((gchar) p[-1]))
 563             p--;
 564
 565         if (tmp < p && p < end && p[-1] == ':')
 566         {
 567             char *fname;
 568             vfs_path_t *tmp_vpath, *fname_vpath;
 569             struct stat st;
 570
 571             fname = g_strndup (tmp, p - 1 - tmp);
 572             tmp_vpath = vfs_path_from_str (tmp);
 573             fname_vpath = vfs_path_from_str (fname);
 574
 575             /*
 576              * Check that the file before the colon actually exists.
 577              * If it doesn't exist, create new file.
 578              */
 579             if (mc_stat (tmp_vpath, &st) == -1 && mc_stat (fname_vpath, &st) != -1)
 580             {
 581                 arg = mcedit_arg_vpath_new (fname_vpath, atoi (p));
 582                 vfs_path_free (tmp_vpath);
 583             }
 584             else
 585             {
 586                 arg = mcedit_arg_vpath_new (tmp_vpath, 0);
 587                 vfs_path_free (fname_vpath);
 588             }
 589
 590             g_free (fname);
 591         }
 592         else
 593             arg = mcedit_arg_new (tmp, 0);
 594
 595         flist = g_list_prepend (flist, arg);
 596     }
 597
 598     if (flist == NULL)
 599         flist = g_list_prepend (flist, mcedit_arg_new (NULL, 0));
 600     else if (first_line_number != -1)
 601     {
 602         /* overwrite line number for first file */
 603         GList *l;
 604
 605         l = g_list_last (flist);
 606         ((mcedit_arg_t *) l->data)->line_number = first_line_number;
 607     }
 608
 609     return flist;
 610 }
 611
 612 /* --------------------------------------------------------------------------------------------- */
 613 /*** public functions ****************************************************************************/
 614 /* --------------------------------------------------------------------------------------------- */
 615
 616 gboolean
 617 mc_args_parse (int *argc, char ***argv, const char *translation_domain, GError ** mcerror)
 618 {
 619     const gchar *_system_codepage;
 620     gboolean ok = TRUE;
 621
 622     mc_return_val_if_error (mcerror, FALSE);
 623
 624     _system_codepage = str_detect_termencoding ();
 625
 626 #ifdef ENABLE_NLS
 627     if (!str_isutf8 (_system_codepage))
 628         bind_textdomain_codeset ("mc", "UTF-8");
 629 #endif
 630
 631     context = g_option_context_new (mc_args_add_usage_info ());
 632
 633     g_option_context_set_ignore_unknown_options (context, FALSE);
 634
 635     mc_args_add_extended_info_to_help ();
 636
 637     main_group = g_option_group_new ("main", _("Main options"), _("Main options"), NULL, NULL);
 638
 639     g_option_group_add_entries (main_group, argument_main_table);
 640     g_option_context_set_main_group (context, main_group);
 641     g_option_group_set_translation_domain (main_group, translation_domain);
 642
 643     terminal_group = g_option_group_new ("terminal", _("Terminal options"),
 644                                          _("Terminal options"), NULL, NULL);
 645
 646     g_option_group_add_entries (terminal_group, argument_terminal_table);
 647     g_option_context_add_group (context, terminal_group);
 648     g_option_group_set_translation_domain (terminal_group, translation_domain);
 649
 650     color_group = mc_args_new_color_group ();
 651
 652     g_option_group_add_entries (color_group, argument_color_table);
 653     g_option_context_add_group (context, color_group);
 654     g_option_group_set_translation_domain (color_group, translation_domain);
 655
 656     if (!g_option_context_parse (context, argc, argv, mcerror))
 657     {
 658         if (*mcerror == NULL)
 659             mc_propagate_error (mcerror, 0, "%s\n", _("Arguments parse error!"));
 660         else
 661         {
 662             gchar *help_str;
 663
 664             help_str = g_option_context_get_help (context, TRUE, NULL);
 665
 666             if (str_isutf8 (_system_codepage))
 667                 mc_replace_error (mcerror, (*mcerror)->code, "%s\n\n%s\n", (*mcerror)->message,
 668                                   help_str);
 669             else
 670             {
 671                 gchar *full_help_str;
 672
 673                 full_help_str =
 674                     mc_args__convert_help_to_syscharset (_system_codepage, (*mcerror)->message,
 675                                                          help_str);
 676                 mc_replace_error (mcerror, (*mcerror)->code, "%s", full_help_str);
 677                 g_free (full_help_str);
 678             }
 679             g_free (help_str);
 680         }
 681
 682         ok = FALSE;
 683     }
 684
 685     g_option_context_free (context);
 686     mc_args_clean_temp_help_strings ();
 687
 688 #ifdef ENABLE_NLS
 689     if (!str_isutf8 (_system_codepage))
 690         bind_textdomain_codeset ("mc", _system_codepage);
 691 #endif
 692
 693     return ok;
 694 }
 695
 696 /* --------------------------------------------------------------------------------------------- */
 697
 698 gboolean
 699 mc_args_show_info (void)
 700 {
 701     if (mc_args__show_version)
 702     {
 703         show_version ();
 704         return FALSE;
 705     }
 706
 707     if (mc_args__show_datadirs)
 708     {
 709         printf ("%s (%s)\n", mc_global.sysconfig_dir, mc_global.share_data_dir);
 710         return FALSE;
 711     }
 712
 713     if (mc_args__show_datadirs_extended)
 714     {
 715         show_datadirs_extended ();
 716         return FALSE;
 717     }
 718
 719     if (mc_args__show_configure_opts)
 720     {
 721         show_configure_options ();
 722         return FALSE;
 723     }
 724
 725     return TRUE;
 726 }
 727
 728 /* --------------------------------------------------------------------------------------------- */
 729
 730 gboolean
 731 mc_setup_by_args (int argc, char **argv, GError ** mcerror)
 732 {
 733     const char *base;
 734     char *tmp;
 735
 736     mc_return_val_if_error (mcerror, FALSE);
 737
 738     if (mc_args__force_colors)
 739         mc_global.tty.disable_colors = FALSE;
 740
 741 #ifdef ENABLE_SUBSHELL
 742     if (mc_args__nouse_subshell)
 743         mc_global.tty.use_subshell = FALSE;
 744 #endif /* ENABLE_SUBSHELL */
 745
 746 #ifdef ENABLE_VFS_SMB
 747     if (mc_args__debug_level != 0)
 748         smbfs_set_debug (mc_args__debug_level);
 749 #endif /* ENABLE_VFS_SMB */
 750
 751     if (mc_args__netfs_logfile != NULL)
 752     {
 753         vfs_path_t *vpath;
 754 #ifdef ENABLE_VFS_FTP
 755         vpath = vfs_path_from_str ("ftp://");
 756         mc_setctl (vpath, VFS_SETCTL_LOGFILE, (void *) mc_args__netfs_logfile);
 757         vfs_path_free (vpath);
 758 #endif /* ENABLE_VFS_FTP */
 759 #ifdef ENABLE_VFS_SMB
 760         vpath = vfs_path_from_str ("smb://");
 761         mc_setctl (vpath, VFS_SETCTL_LOGFILE, (void *) mc_args__netfs_logfile);
 762         vfs_path_free (vpath);
 763 #endif /* ENABLE_VFS_SMB */
 764         (void) vpath;
 765     }
 766
 767     base = x_basename (argv[0]);
 768     tmp = (argc > 0) ? argv[1] : NULL;
 769
 770     if (strncmp (base, "mce", 3) == 0 || strcmp (base, "vi") == 0)
 771     {
 772         /* mce* or vi is link to mc */
 773         mc_global.mc_run_mode = MC_RUN_EDITOR;
 774     }
 775     else if (strncmp (base, "mcv", 3) == 0 || strcmp (base, "view") == 0)
 776     {
 777         /* mcv* or view is link to mc */
 778         mc_global.mc_run_mode = MC_RUN_VIEWER;
 779     }
 780 #ifdef USE_DIFF_VIEW
 781     else if (strncmp (base, "mcd", 3) == 0 || strcmp (base, "diff") == 0)
 782     {
 783         /* mcd* or diff is link to mc */
 784         mc_global.mc_run_mode = MC_RUN_DIFFVIEWER;
 785     }
 786 #endif /* USE_DIFF_VIEW */
 787
 788     switch (mc_global.mc_run_mode)
 789     {
 790     case MC_RUN_EDITOR:
 791         mc_run_param0 = parse_mcedit_arguments (argc - 1, &argv[1]);
 792         break;
 793
 794     case MC_RUN_VIEWER:
 795         if (tmp == NULL)
 796         {
 797             mc_propagate_error (mcerror, 0, "%s\n", _("No arguments given to the viewer."));
 798             return FALSE;
 799         }
 800
 801         mc_run_param0 = g_strdup (tmp);
 802         break;
 803
 804 #ifdef USE_DIFF_VIEW
 805     case MC_RUN_DIFFVIEWER:
 806         if (argc < 3)
 807         {
 808             mc_propagate_error (mcerror, 0, "%s\n",
 809                                 _("Two files are required to envoke the diffviewer."));
 810             return FALSE;
 811         }
 812         /* fallthrough */
 813 #endif /* USE_DIFF_VIEW */
 814
 815     case MC_RUN_FULL:
 816     default:
 817         /* set the current dir and the other dir for filemanager,
 818            or two files for diff viewer */
 819         if (tmp != NULL)
 820         {
 821             mc_run_param0 = g_strdup (tmp);
 822             tmp = (argc > 1) ? argv[2] : NULL;
 823             if (tmp != NULL)
 824                 mc_run_param1 = g_strdup (tmp);
 825         }
 826         break;
 827     }
 828
 829     return TRUE;
 830 }
 831
 832 /* --------------------------------------------------------------------------------------------- */
 833 /**
 834  * Free the mcedit_arg_t object.
 835  *
 836  * @param arg mcedit_arg_t object
 837  */
 838
 839 void
 840 mcedit_arg_free (mcedit_arg_t * arg)
 841 {
 842     vfs_path_free (arg->file_vpath);
 843     g_free (arg);
 844 }
 845
 846 /* --------------------------------------------------------------------------------------------- */