src/args.c

   1 /*
   2    Handle command line arguments.
   3
   4    Copyright (C) 2009, 2010, 2011, 2012
   5    The 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/main.h"
  42 #include "src/textconf.h"
  43
  44 #include "src/args.h"
  45
  46 /*** external variables **************************************************************************/
  47
  48 /*** global variables ****************************************************************************/
  49
  50 /* If true, show version info and exit */
  51 gboolean mc_args__show_version = FALSE;
  52
  53 /* If true, assume we are running on an xterm terminal */
  54 gboolean mc_args__force_xterm = FALSE;
  55
  56 gboolean mc_args__nomouse = FALSE;
  57
  58 /* Force colors, only used by Slang */
  59 gboolean mc_args__force_colors = FALSE;
  60
  61 /* Don't load keymap form file and use default one */
  62 gboolean mc_args__nokeymap = FALSE;
  63
  64 char *mc_args__last_wd_file = NULL;
  65
  66 /* when enabled NETCODE, use folowing file as logfile */
  67 char *mc_args__netfs_logfile = NULL;
  68
  69 /* keymap file */
  70 char *mc_args__keymap_file = NULL;
  71
  72 /* Debug level */
  73 int mc_args__debug_level = 0;
  74
  75 /*** file scope macro definitions ****************************************************************/
  76
  77 /*** file scope type declarations ****************************************************************/
  78
  79 /*** file scope variables ************************************************************************/
  80
  81 /* forward declarations */
  82 static gboolean parse_mc_e_argument (const gchar * option_name, const gchar * value,
  83                                      gpointer data, GError ** error);
  84 static gboolean parse_mc_v_argument (const gchar * option_name, const gchar * value,
  85                                      gpointer data, GError ** error);
  86
  87 static GOptionContext *context;
  88
  89 #ifdef HAVE_SUBSHELL_SUPPORT
  90 static gboolean mc_args__nouse_subshell = FALSE;
  91 #endif /* HAVE_SUBSHELL_SUPPORT */
  92 static gboolean mc_args__show_datadirs = FALSE;
  93 static gboolean mc_args__show_datadirs_extended = FALSE;
  94 static gboolean mc_args__show_configure_opts = FALSE;
  95
  96 static GOptionGroup *main_group;
  97
  98 static const GOptionEntry argument_main_table[] = {
  99     /* *INDENT-OFF* */
 100     /* generic options */
 101     {
 102      "version", 'V', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 103      &mc_args__show_version,
 104      N_("Displays the current version"),
 105      NULL
 106     },
 107
 108     /* options for wrappers */
 109     {
 110      "datadir", 'f', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 111      &mc_args__show_datadirs,
 112      N_("Print data directory"),
 113      NULL
 114     },
 115
 116     /* show extended information about used data directories */
 117     {
 118      "datadir-info", 'F', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 119      &mc_args__show_datadirs_extended,
 120      N_("Print extended info about used data directories"),
 121      NULL
 122     },
 123
 124     /* show configure options */
 125     {
 126      "configure-options", '\0', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 127      &mc_args__show_configure_opts,
 128      N_("Print configure options"),
 129      NULL
 130     },
 131
 132     {
 133      "printwd", 'P', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_STRING,
 134      &mc_args__last_wd_file,
 135      N_("Print last working directory to specified file"),
 136      "<file>"
 137     },
 138
 139 #ifdef HAVE_SUBSHELL_SUPPORT
 140     {
 141      "subshell", 'U', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 142      &mc_global.tty.use_subshell,
 143      N_("Enables subshell support (default)"),
 144      NULL
 145     },
 146
 147     {
 148      "nosubshell", 'u', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 149      &mc_args__nouse_subshell,
 150      N_("Disables subshell support"),
 151      NULL
 152     },
 153 #endif
 154
 155     /* debug options */
 156 #ifdef ENABLE_VFS_FTP
 157     {
 158      "ftplog", 'l', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_STRING,
 159      &mc_args__netfs_logfile,
 160      N_("Log ftp dialog to specified file"),
 161      "<file>"
 162     },
 163 #endif /* ENABLE_VFS_FTP */
 164 #ifdef ENABLE_VFS_SMB
 165     {
 166      "debuglevel", 'D', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_INT,
 167      &mc_args__debug_level,
 168      N_("Set debug level"),
 169      "<integer>"
 170     },
 171 #endif /* ENABLE_VFS_SMB */
 172
 173     /* single file operations */
 174     {
 175      "view", 'v', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_CALLBACK,
 176      parse_mc_v_argument,
 177      N_("Launches the file viewer on a file"),
 178      "<file>"
 179     },
 180
 181     {
 182      "edit", 'e', G_OPTION_FLAG_IN_MAIN | G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
 183      parse_mc_e_argument,
 184      N_("Edit files"),
 185      "<file> ..." },
 186
 187     {
 188      NULL, '\0', 0, 0, NULL, NULL, NULL /* Complete struct initialization */
 189     }
 190     /* *INDENT-ON* */
 191 };
 192
 193 GOptionGroup *terminal_group;
 194 #define ARGS_TERM_OPTIONS 0
 195 static const GOptionEntry argument_terminal_table[] = {
 196     /* *INDENT-OFF* */
 197     /* terminal options */
 198     {
 199      "xterm", 'x', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 200      &mc_args__force_xterm,
 201      N_("Forces xterm features"),
 202      NULL
 203     },
 204
 205     {
 206      "no-x11", 'X', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 207      &mc_global.tty.disable_x11,
 208      N_("Disable X11 support"),
 209      NULL
 210     },
 211
 212     {
 213      "oldmouse", 'g', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 214      &mc_global.tty.old_mouse,
 215      N_("Tries to use an old highlight mouse tracking"),
 216      NULL
 217     },
 218
 219     {
 220      "nomouse", 'd', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 221      &mc_args__nomouse,
 222      N_("Disable mouse support in text version"),
 223      NULL
 224     },
 225
 226 #ifdef HAVE_SLANG
 227     {
 228      "termcap", 't', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 229      &SLtt_Try_Termcap,
 230      N_("Tries to use termcap instead of terminfo"),
 231      NULL
 232     },
 233 #endif
 234
 235     {
 236      "slow", 's', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 237      &mc_global.tty.slow_terminal,
 238      N_("To run on slow terminals"),
 239      NULL
 240     },
 241
 242     {
 243      "stickchars", 'a', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 244      &mc_global.tty.ugly_line_drawing,
 245      N_("Use stickchars to draw"),
 246      NULL
 247     },
 248
 249     {
 250      "resetsoft", 'k', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 251      &reset_hp_softkeys,
 252      N_("Resets soft keys on HP terminals"),
 253      NULL
 254     },
 255
 256     {
 257      "keymap", 'K', ARGS_TERM_OPTIONS, G_OPTION_ARG_STRING,
 258      &mc_args__keymap_file,
 259      N_("Load definitions of key bindings from specified file"),
 260      "<file>"
 261     },
 262
 263     {
 264      "nokeymap", '\0', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 265      &mc_args__nokeymap,
 266      N_("Don't load definitions of key bindings from file, use defaults"),
 267      NULL
 268     },
 269
 270     {
 271      NULL, '\0', 0, 0, NULL, NULL, NULL /* Complete struct initialization */
 272     }
 273     /* *INDENT-ON* */
 274 };
 275
 276 #undef ARGS_TERM_OPTIONS
 277
 278 GOptionGroup *color_group;
 279 #define ARGS_COLOR_OPTIONS 0
 280 /* #define ARGS_COLOR_OPTIONS G_OPTION_FLAG_IN_MAIN */
 281 static const GOptionEntry argument_color_table[] = {
 282     /* *INDENT-OFF* */
 283     /* color options */
 284     {
 285      "nocolor", 'b', ARGS_COLOR_OPTIONS, G_OPTION_ARG_NONE,
 286      &mc_global.tty.disable_colors,
 287      N_("Requests to run in black and white"),
 288      NULL
 289     },
 290
 291     {
 292      "color", 'c', ARGS_COLOR_OPTIONS, G_OPTION_ARG_NONE,
 293      &mc_args__force_colors,
 294      N_("Request to run in color mode"),
 295      NULL
 296     },
 297
 298     {
 299      "colors", 'C', ARGS_COLOR_OPTIONS, G_OPTION_ARG_STRING,
 300      &mc_global.tty.command_line_colors,
 301      N_("Specifies a color configuration"),
 302      "<string>"
 303     },
 304
 305     {
 306      "skin", 'S', ARGS_COLOR_OPTIONS, G_OPTION_ARG_STRING,
 307      &mc_global.tty.skin,
 308      N_("Show mc with specified skin"),
 309      "<string>"
 310     },
 311
 312     {
 313      NULL, '\0', 0, 0, NULL, NULL, NULL /* Complete struct initialization */
 314     }
 315     /* *INDENT-ON* */
 316 };
 317
 318 #undef ARGS_COLOR_OPTIONS
 319
 320 static gchar *mc_args__loc__colors_string = NULL;
 321 static gchar *mc_args__loc__footer_string = NULL;
 322 static gchar *mc_args__loc__header_string = NULL;
 323 static gchar *mc_args__loc__usage_string = NULL;
 324
 325 /*** file scope functions ************************************************************************/
 326
 327 /* --------------------------------------------------------------------------------------------- */
 328 static void
 329 mc_args_clean_temp_help_strings (void)
 330 {
 331     g_free (mc_args__loc__colors_string);
 332     mc_args__loc__colors_string = NULL;
 333
 334     g_free (mc_args__loc__footer_string);
 335     mc_args__loc__footer_string = NULL;
 336
 337     g_free (mc_args__loc__header_string);
 338     mc_args__loc__header_string = NULL;
 339
 340     g_free (mc_args__loc__usage_string);
 341     mc_args__loc__usage_string = NULL;
 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:       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, 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 #if GLIB_CHECK_VERSION(2,12,0)
 413     g_option_context_set_description (context, mc_args__loc__footer_string);
 414     g_option_context_set_summary (context, mc_args__loc__header_string);
 415 #endif
 416 }
 417
 418 /* --------------------------------------------------------------------------------------------- */
 419
 420 static gchar *
 421 mc_args__convert_help_to_syscharset (const gchar * charset, const gchar * error_message,
 422                                      const gchar * help_str)
 423 {
 424     GString *buffer;
 425     GIConv conv;
 426     gchar *full_help_str;
 427
 428     buffer = g_string_new ("");
 429     conv = g_iconv_open (charset, "UTF-8");
 430     full_help_str = g_strdup_printf ("%s\n\n%s\n", error_message, help_str);
 431
 432     str_convert (conv, full_help_str, buffer);
 433
 434     g_free (full_help_str);
 435     g_iconv_close (conv);
 436
 437     return g_string_free (buffer, FALSE);
 438 }
 439
 440 /* --------------------------------------------------------------------------------------------- */
 441
 442 static gboolean
 443 parse_mc_e_argument (const gchar * option_name, const gchar * value, gpointer data, GError ** error)
 444 {
 445     (void) option_name;
 446     (void) value;
 447     (void) data;
 448     (void) error;
 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, GError ** error)
 459 {
 460     (void) option_name;
 461     (void) data;
 462     (void) error;
 463
 464     mc_global.mc_run_mode = MC_RUN_VIEWER;
 465     mc_run_param0 = g_strdup (value);
 466
 467     return TRUE;
 468 }
 469
 470 /* --------------------------------------------------------------------------------------------- */
 471 /**
 472  * Get list of filenames (and line numbers) from command line, when mc called as editor
 473  *
 474  * @param argc count of all arguments
 475  * @param argv array of strings, contains arguments
 476  * @return list of mcedit_arg_t objects
 477  */
 478
 479 static GList *
 480 parse_mcedit_arguments (int argc, char **argv)
 481 {
 482     GList *flist = NULL;
 483     int i;
 484     long first_line_number = -1;
 485
 486     for (i = 0; i < argc; i++)
 487     {
 488         char *tmp;
 489         char *end, *p;
 490         mcedit_arg_t *arg;
 491
 492         tmp = argv[i];
 493
 494         /*
 495          * First, try to get line number as +lineno.
 496          */
 497         if (*tmp == '+')
 498         {
 499             long lineno;
 500             char *error;
 501
 502             lineno = strtol (tmp + 1, &error, 10);
 503
 504             if (*error == '\0')
 505             {
 506                 /* this is line number */
 507                 first_line_number = lineno;
 508                 continue;
 509             }
 510             /* this is file name */
 511         }
 512
 513         /*
 514          * Check for filename:lineno, followed by an optional colon.
 515          * This format is used by many programs (especially compilers)
 516          * in error messages and warnings. It is supported so that
 517          * users can quickly copy and paste file locations.
 518          */
 519         end = tmp + strlen (tmp);
 520         p = end;
 521
 522         if (p > tmp && p[-1] == ':')
 523             p--;
 524         while (p > tmp && g_ascii_isdigit ((gchar) p[-1]))
 525             p--;
 526
 527         if (tmp < p && p < end && p[-1] == ':')
 528         {
 529             char *fname;
 530             vfs_path_t *tmp_vpath, *fname_vpath;
 531             struct stat st;
 532
 533             fname = g_strndup (tmp, p - 1 - tmp);
 534             tmp_vpath = vfs_path_from_str (tmp);
 535             fname_vpath = vfs_path_from_str (fname);
 536
 537             /*
 538              * Check that the file before the colon actually exists.
 539              * If it doesn't exist, create new file.
 540              */
 541             if (mc_stat (tmp_vpath, &st) == -1 && mc_stat (fname_vpath, &st) != -1)
 542             {
 543                 arg = mcedit_arg_vpath_new (fname_vpath, atoi (p));
 544                 vfs_path_free (tmp_vpath);
 545             }
 546             else
 547             {
 548                 arg = mcedit_arg_vpath_new (tmp_vpath, 0);
 549                 vfs_path_free (fname_vpath);
 550             }
 551
 552             g_free (fname);
 553         }
 554         else
 555             arg = mcedit_arg_new (tmp, 0);
 556
 557         flist = g_list_prepend (flist, arg);
 558     }
 559
 560     if (flist == NULL)
 561         flist = g_list_prepend (flist, mcedit_arg_new (NULL, 0));
 562     else if (first_line_number != -1)
 563     {
 564         /* overwrite line number for first file */
 565         GList *l;
 566
 567         l = g_list_last (flist);
 568         ((mcedit_arg_t *) l->data)->line_number = first_line_number;
 569     }
 570
 571     return flist;
 572 }
 573
 574 /* --------------------------------------------------------------------------------------------- */
 575 /*** public functions ****************************************************************************/
 576 /* --------------------------------------------------------------------------------------------- */
 577
 578 gboolean
 579 mc_args_parse (int *argc, char ***argv, const char *translation_domain, GError ** error)
 580 {
 581     const gchar *_system_codepage;
 582     gboolean ok = TRUE;
 583
 584     _system_codepage = str_detect_termencoding ();
 585
 586 #ifdef ENABLE_NLS
 587     if (!str_isutf8 (_system_codepage))
 588         bind_textdomain_codeset ("mc", "UTF-8");
 589 #endif
 590
 591     context = g_option_context_new (mc_args_add_usage_info ());
 592
 593     g_option_context_set_ignore_unknown_options (context, FALSE);
 594
 595     mc_args_add_extended_info_to_help ();
 596
 597     main_group = g_option_group_new ("main", _("Main options"), _("Main options"), NULL, NULL);
 598
 599     g_option_group_add_entries (main_group, argument_main_table);
 600     g_option_context_set_main_group (context, main_group);
 601     g_option_group_set_translation_domain (main_group, translation_domain);
 602
 603     terminal_group = g_option_group_new ("terminal", _("Terminal options"),
 604                                          _("Terminal options"), NULL, NULL);
 605
 606     g_option_group_add_entries (terminal_group, argument_terminal_table);
 607     g_option_context_add_group (context, terminal_group);
 608     g_option_group_set_translation_domain (terminal_group, translation_domain);
 609
 610     color_group = mc_args_new_color_group ();
 611
 612     g_option_group_add_entries (color_group, argument_color_table);
 613     g_option_context_add_group (context, color_group);
 614     g_option_group_set_translation_domain (color_group, translation_domain);
 615
 616     if (!g_option_context_parse (context, argc, argv, error))
 617     {
 618         GError *error2 = NULL;
 619
 620         if (*error == NULL)
 621             *error = g_error_new (MC_ERROR, 0, "%s\n", _("Arguments parse error!"));
 622         else
 623         {
 624             gchar *help_str;
 625
 626 #if GLIB_CHECK_VERSION(2,14,0)
 627             help_str = g_option_context_get_help (context, TRUE, NULL);
 628 #else
 629             help_str = g_strdup ("");
 630 #endif
 631             if (str_isutf8 (_system_codepage))
 632                 error2 = g_error_new ((*error)->domain, (*error)->code, "%s\n\n%s\n",
 633                                       (*error)->message, help_str);
 634             else
 635             {
 636                 gchar *full_help_str;
 637
 638                 full_help_str =
 639                     mc_args__convert_help_to_syscharset (_system_codepage, (*error)->message,
 640                                                          help_str);
 641                 error2 = g_error_new ((*error)->domain, (*error)->code, "%s", full_help_str);
 642                 g_free (full_help_str);
 643             }
 644
 645             g_free (help_str);
 646             g_error_free (*error);
 647             *error = error2;
 648         }
 649
 650         ok = FALSE;
 651     }
 652
 653     g_option_context_free (context);
 654     mc_args_clean_temp_help_strings ();
 655
 656 #ifdef ENABLE_NLS
 657     if (!str_isutf8 (_system_codepage))
 658         bind_textdomain_codeset ("mc", _system_codepage);
 659 #endif
 660
 661     return ok;
 662 }
 663
 664 /* --------------------------------------------------------------------------------------------- */
 665
 666 gboolean
 667 mc_args_show_info (void)
 668 {
 669     if (mc_args__show_version)
 670     {
 671         show_version ();
 672         return FALSE;
 673     }
 674
 675     if (mc_args__show_datadirs)
 676     {
 677         printf ("%s (%s)\n", mc_global.sysconfig_dir, mc_global.share_data_dir);
 678         return FALSE;
 679     }
 680
 681     if (mc_args__show_datadirs_extended)
 682     {
 683         show_datadirs_extended ();
 684         return FALSE;
 685     }
 686
 687     if (mc_args__show_configure_opts)
 688     {
 689         show_configure_options ();
 690         return FALSE;
 691     }
 692
 693     return TRUE;
 694 }
 695
 696 /* --------------------------------------------------------------------------------------------- */
 697
 698 gboolean
 699 mc_setup_by_args (int argc, char **argv, GError ** error)
 700 {
 701     const char *base;
 702     char *tmp;
 703
 704     if (mc_args__force_colors)
 705         mc_global.tty.disable_colors = FALSE;
 706
 707 #ifdef HAVE_SUBSHELL_SUPPORT
 708     if (mc_args__nouse_subshell)
 709         mc_global.tty.use_subshell = FALSE;
 710 #endif /* HAVE_SUBSHELL_SUPPORT */
 711
 712 #ifdef ENABLE_VFS_SMB
 713     if (mc_args__debug_level != 0)
 714         smbfs_set_debug (mc_args__debug_level);
 715 #endif /* ENABLE_VFS_SMB */
 716
 717     if (mc_args__netfs_logfile != NULL)
 718     {
 719         vfs_path_t *vpath;
 720 #ifdef ENABLE_VFS_FTP
 721         vpath = vfs_path_from_str ("ftp://");
 722         mc_setctl (vpath, VFS_SETCTL_LOGFILE, (void *) mc_args__netfs_logfile);
 723         vfs_path_free (vpath);
 724 #endif /* ENABLE_VFS_FTP */
 725 #ifdef ENABLE_VFS_SMB
 726         vpath = vfs_path_from_str ("smb://");
 727         mc_setctl (vpath, VFS_SETCTL_LOGFILE, (void *) mc_args__netfs_logfile);
 728         vfs_path_free (vpath);
 729 #endif /* ENABLE_VFS_SMB */
 730         (void) vpath;
 731     }
 732
 733     base = x_basename (argv[0]);
 734     tmp = (argc > 0) ? argv[1] : NULL;
 735
 736     if (strncmp (base, "mce", 3) == 0 || strcmp (base, "vi") == 0)
 737     {
 738         /* mce* or vi is link to mc */
 739
 740         mc_run_param0 = parse_mcedit_arguments (argc - 1, &argv[1]);
 741         mc_global.mc_run_mode = MC_RUN_EDITOR;
 742     }
 743     else if (strncmp (base, "mcv", 3) == 0 || strcmp (base, "view") == 0)
 744     {
 745         /* mcv* or view is link to mc */
 746
 747         if (tmp != NULL)
 748             mc_run_param0 = g_strdup (tmp);
 749         else
 750         {
 751             *error = g_error_new (MC_ERROR, 0, "%s\n", _("No arguments given to the viewer."));
 752             return FALSE;
 753         }
 754         mc_global.mc_run_mode = MC_RUN_VIEWER;
 755     }
 756 #ifdef USE_DIFF_VIEW
 757     else if (strncmp (base, "mcd", 3) == 0 || strcmp (base, "diff") == 0)
 758     {
 759         /* mcd* or diff is link to mc */
 760
 761         if (argc < 3)
 762         {
 763             *error = g_error_new (MC_ERROR, 0, "%s\n",
 764                                   _("Two files are required to evoke the diffviewer."));
 765             return FALSE;
 766         }
 767
 768         if (tmp != NULL)
 769         {
 770             mc_run_param0 = g_strdup (tmp);
 771             tmp = (argc > 1) ? argv[2] : NULL;
 772             if (tmp != NULL)
 773                 mc_run_param1 = g_strdup (tmp);
 774             mc_global.mc_run_mode = MC_RUN_DIFFVIEWER;
 775         }
 776     }
 777 #endif /* USE_DIFF_VIEW */
 778     else
 779     {
 780         /* MC is run as mc */
 781
 782         switch (mc_global.mc_run_mode)
 783         {
 784         case MC_RUN_EDITOR:
 785             mc_run_param0 = parse_mcedit_arguments (argc - 1, &argv[1]);
 786             break;
 787
 788         case MC_RUN_VIEWER:
 789             /* mc_run_param0 is set up in parse_mc_v_argument() */
 790             break;
 791
 792         case MC_RUN_DIFFVIEWER:
 793             /* not implemented yet */
 794             break;
 795
 796         case MC_RUN_FULL:
 797         default:
 798             /* sets the current dir and the other dir */
 799             if (tmp != NULL)
 800             {
 801                 mc_run_param0 = g_strdup (tmp);
 802                 tmp = (argc > 1) ? argv[2] : NULL;
 803                 if (tmp != NULL)
 804                     mc_run_param1 = g_strdup (tmp);
 805             }
 806             mc_global.mc_run_mode = MC_RUN_FULL;
 807             break;
 808         }
 809     }
 810
 811     return TRUE;
 812 }
 813
 814 /* --------------------------------------------------------------------------------------------- */
 815 /**
 816  * Create mcedit_arg_t object from file name and the line number.
 817  *
 818  * @param file_name   file name
 819  * @param line_number line number. If value is 0, try to restore saved position.
 820  * @return mcedit_arg_t object
 821  */
 822
 823 mcedit_arg_t *
 824 mcedit_arg_new (const char *file_name, long line_number)
 825 {
 826     return mcedit_arg_vpath_new (vfs_path_from_str (file_name), line_number);
 827 }
 828
 829 /* --------------------------------------------------------------------------------------------- */
 830 /**
 831  * Create mcedit_arg_t object from vfs_path_t object and the line number.
 832  *
 833  * @param file_vpath  file path object
 834  * @param line_number line number. If value is 0, try to restore saved position.
 835  * @return mcedit_arg_t object
 836  */
 837
 838 mcedit_arg_t *
 839 mcedit_arg_vpath_new (vfs_path_t * file_vpath, long line_number)
 840 {
 841     mcedit_arg_t *arg;
 842
 843     arg = g_new (mcedit_arg_t, 1);
 844     arg->file_vpath = file_vpath;
 845     arg->line_number = line_number;
 846
 847     return arg;
 848 }
 849
 850 /* --------------------------------------------------------------------------------------------- */
 851 /**
 852  * Free the mcedit_arg_t object.
 853  *
 854  * @param arg mcedit_arg_t object
 855  */
 856
 857 void
 858 mcedit_arg_free (mcedit_arg_t * arg)
 859 {
 860     vfs_path_free (arg->file_vpath);
 861     g_free (arg);
 862 }
 863
 864 /* --------------------------------------------------------------------------------------------- */