src/args.c

   1 /*
   2    Handle command line arguments.
   3
   4    Copyright (C) 2009, 2011
   5    The Free Software Foundation, Inc.
   6
   7    Written by:
   8    Slava Zanko <slavazanko@gmail.com>, 2009.
   9
  10    This file is part of the Midnight Commander.
  11
  12    The Midnight Commander is free software: you can redistribute it
  13    and/or modify it under the terms of the GNU General Public License as
  14    published by the Free Software Foundation, either version 3 of the License,
  15    or (at your option) any later version.
  16
  17    The Midnight Commander is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24  */
  25
  26 #include <config.h>
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29
  30 #include "lib/global.h"
  31 #include "lib/tty/tty.h"
  32 #include "lib/strutil.h"
  33 #include "lib/vfs/vfs.h"
  34 #include "lib/util.h"           /* x_basename() */
  35
  36 #ifdef ENABLE_VFS_SMB
  37 #include "src/vfs/smbfs/smbfs.h"        /* smbfs_set_debugf()  */
  38 #endif
  39
  40 #include "src/main.h"
  41 #include "src/textconf.h"
  42
  43 #include "src/args.h"
  44
  45 /*** external variables **************************************************************************/
  46
  47 /*** global variables ****************************************************************************/
  48
  49 /* If true, show version info and exit */
  50 gboolean mc_args__show_version = FALSE;
  51
  52 /* If true, assume we are running on an xterm terminal */
  53 gboolean mc_args__force_xterm = FALSE;
  54
  55 gboolean mc_args__nomouse = FALSE;
  56
  57 /* Force colors, only used by Slang */
  58 gboolean mc_args__force_colors = FALSE;
  59
  60 /* Don't load keymap form file and use default one */
  61 gboolean mc_args__nokeymap = FALSE;
  62
  63 /* Line to start the editor on */
  64 int mc_args__edit_start_line = 0;
  65
  66 char *mc_args__last_wd_file = NULL;
  67
  68 /* when enabled NETCODE, use folowing file as logfile */
  69 char *mc_args__netfs_logfile = NULL;
  70
  71 /* keymap file */
  72 char *mc_args__keymap_file = NULL;
  73
  74 /* Debug level */
  75 int mc_args__debug_level = 0;
  76
  77 /*** file scope macro definitions ****************************************************************/
  78
  79 /*** file scope type declarations ****************************************************************/
  80
  81 /*** file scope variables ************************************************************************/
  82
  83 /* forward declarations */
  84 static gboolean parse_mc_e_argument (const gchar * option_name, const gchar * value,
  85                                      gpointer data, GError ** error);
  86 static gboolean parse_mc_v_argument (const gchar * option_name, const gchar * value,
  87                                      gpointer data, GError ** error);
  88
  89 static GOptionContext *context;
  90
  91 #ifdef HAVE_SUBSHELL_SUPPORT
  92 static gboolean mc_args__nouse_subshell = FALSE;
  93 #endif /* HAVE_SUBSHELL_SUPPORT */
  94 static gboolean mc_args__show_datadirs = FALSE;
  95 static gboolean mc_args__show_datadirs_extended = FALSE;
  96 static gboolean mc_args__show_configure_opts = FALSE;
  97
  98 static GOptionGroup *main_group;
  99
 100 static const GOptionEntry argument_main_table[] = {
 101     /* *INDENT-OFF* */
 102     /* generic options */
 103     {
 104      "version", 'V', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 105      &mc_args__show_version,
 106      N_("Displays the current version"),
 107      NULL
 108     },
 109
 110     /* options for wrappers */
 111     {
 112      "datadir", 'f', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 113      &mc_args__show_datadirs,
 114      N_("Print data directory"),
 115      NULL
 116     },
 117
 118     /* show extended information about used data directories */
 119     {
 120      "datadir-info", 'F', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 121      &mc_args__show_datadirs_extended,
 122      N_("Print extended info about used data directories"),
 123      NULL
 124     },
 125
 126     /* show configure options */
 127     {
 128      "configure-options", '\0', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 129      &mc_args__show_configure_opts,
 130      N_("Print configure options"),
 131      NULL
 132     },
 133
 134     {
 135      "printwd", 'P', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_STRING,
 136      &mc_args__last_wd_file,
 137      N_("Print last working directory to specified file"),
 138      "<file>"
 139     },
 140
 141 #ifdef HAVE_SUBSHELL_SUPPORT
 142     {
 143      "subshell", 'U', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 144      &mc_global.tty.use_subshell,
 145      N_("Enables subshell support (default)"),
 146      NULL
 147     },
 148
 149     {
 150      "nosubshell", 'u', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
 151      &mc_args__nouse_subshell,
 152      N_("Disables subshell support"),
 153      NULL
 154     },
 155 #endif
 156
 157     /* debug options */
 158 #ifdef ENABLE_VFS_FTP
 159     {
 160      "ftplog", 'l', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_STRING,
 161      &mc_args__netfs_logfile,
 162      N_("Log ftp dialog to specified file"),
 163      "<file>"
 164     },
 165 #endif /* ENABLE_VFS_FTP */
 166 #ifdef ENABLE_VFS_SMB
 167     {
 168      "debuglevel", 'D', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_INT,
 169      &mc_args__debug_level,
 170      N_("Set debug level"),
 171      "<integer>"
 172     },
 173 #endif /* ENABLE_VFS_SMB */
 174
 175     /* single file operations */
 176     {
 177      "view", 'v', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_CALLBACK,
 178      parse_mc_v_argument,
 179      N_("Launches the file viewer on a file"),
 180      "<file>"
 181     },
 182
 183     {
 184      "edit", 'e', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_CALLBACK,
 185      parse_mc_e_argument,
 186      N_("Edits one file"),
 187      "<file>"},
 188
 189     {
 190      NULL, '\0', 0, 0, NULL, NULL, NULL /* Complete struct initialization */
 191     }
 192     /* *INDENT-ON* */
 193 };
 194
 195 GOptionGroup *terminal_group;
 196 #define ARGS_TERM_OPTIONS 0
 197 static const GOptionEntry argument_terminal_table[] = {
 198     /* *INDENT-OFF* */
 199     /* terminal options */
 200     {
 201      "xterm", 'x', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 202      &mc_args__force_xterm,
 203      N_("Forces xterm features"),
 204      NULL
 205     },
 206
 207     {
 208      "no-x11", 'X', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 209      &mc_global.tty.disable_x11,
 210      N_("Disable X11 support"),
 211      NULL
 212     },
 213
 214     {
 215      "oldmouse", 'g', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 216      &mc_global.tty.old_mouse,
 217      N_("Tries to use an old highlight mouse tracking"),
 218      NULL
 219     },
 220
 221     {
 222      "nomouse", 'd', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 223      &mc_args__nomouse,
 224      N_("Disable mouse support in text version"),
 225      NULL
 226     },
 227
 228 #ifdef HAVE_SLANG
 229     {
 230      "termcap", 't', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 231      &SLtt_Try_Termcap,
 232      N_("Tries to use termcap instead of terminfo"),
 233      NULL
 234     },
 235 #endif
 236
 237     {
 238      "slow", 's', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 239      &mc_global.tty.slow_terminal,
 240      N_("To run on slow terminals"),
 241      NULL
 242     },
 243
 244     {
 245      "stickchars", 'a', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 246      &mc_global.tty.ugly_line_drawing,
 247      N_("Use stickchars to draw"),
 248      NULL
 249     },
 250
 251     {
 252      "resetsoft", 'k', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 253      &reset_hp_softkeys,
 254      N_("Resets soft keys on HP terminals"),
 255      NULL
 256     },
 257
 258     {
 259      "keymap", 'K', ARGS_TERM_OPTIONS, G_OPTION_ARG_STRING,
 260      &mc_args__keymap_file,
 261      N_("Load definitions of key bindings from specified file"),
 262      "<file>"
 263     },
 264
 265     {
 266      "nokeymap", '\0', ARGS_TERM_OPTIONS, G_OPTION_ARG_NONE,
 267      &mc_args__nokeymap,
 268      N_("Don't load definitions of key bindings from file, use defaults"),
 269      NULL
 270     },
 271
 272     {
 273      NULL, '\0', 0, 0, NULL, NULL, NULL /* Complete struct initialization */
 274     }
 275     /* *INDENT-ON* */
 276 };
 277
 278 #undef ARGS_TERM_OPTIONS
 279
 280 GOptionGroup *color_group;
 281 #define ARGS_COLOR_OPTIONS 0
 282 /* #define ARGS_COLOR_OPTIONS G_OPTION_FLAG_IN_MAIN */
 283 static const GOptionEntry argument_color_table[] = {
 284     /* *INDENT-OFF* */
 285     /* color options */
 286     {
 287      "nocolor", 'b', ARGS_COLOR_OPTIONS, G_OPTION_ARG_NONE,
 288      &mc_global.tty.disable_colors,
 289      N_("Requests to run in black and white"),
 290      NULL
 291     },
 292
 293     {
 294      "color", 'c', ARGS_COLOR_OPTIONS, G_OPTION_ARG_NONE,
 295      &mc_args__force_colors,
 296      N_("Request to run in color mode"),
 297      NULL
 298     },
 299
 300     {
 301      "colors", 'C', ARGS_COLOR_OPTIONS, G_OPTION_ARG_STRING,
 302      &mc_global.tty.command_line_colors,
 303      N_("Specifies a color configuration"),
 304      "<string>"
 305     },
 306
 307     {
 308      "skin", 'S', ARGS_COLOR_OPTIONS, G_OPTION_ARG_STRING,
 309      &mc_global.tty.skin,
 310      N_("Show mc with specified skin"),
 311      "<string>"
 312     },
 313
 314     {
 315      NULL, '\0', 0, 0, NULL, NULL, NULL /* Complete struct initialization */
 316     }
 317     /* *INDENT-ON* */
 318 };
 319
 320 #undef ARGS_COLOR_OPTIONS
 321
 322 static gchar *mc_args__loc__colors_string = NULL;
 323 static gchar *mc_args__loc__footer_string = NULL;
 324 static gchar *mc_args__loc__header_string = NULL;
 325 static gchar *mc_args__loc__usage_string = NULL;
 326
 327 /*** file scope functions ************************************************************************/
 328
 329 /* --------------------------------------------------------------------------------------------- */
 330 static void
 331 mc_args_clean_temp_help_strings (void)
 332 {
 333     g_free (mc_args__loc__colors_string);
 334     mc_args__loc__colors_string = NULL;
 335
 336     g_free (mc_args__loc__footer_string);
 337     mc_args__loc__footer_string = NULL;
 338
 339     g_free (mc_args__loc__header_string);
 340     mc_args__loc__header_string = NULL;
 341
 342     g_free (mc_args__loc__usage_string);
 343     mc_args__loc__usage_string = NULL;
 344 }
 345
 346 /* --------------------------------------------------------------------------------------------- */
 347
 348 static GOptionGroup *
 349 mc_args_new_color_group (void)
 350 {
 351 /* *INDENT-OFF* */
 352     /* FIXME: to preserve translations, lines should be split. */
 353     mc_args__loc__colors_string = g_strdup_printf ("%s\n%s",
 354                                                    /* TRANSLATORS: don't translate keywords */
 355                                                    _("--colors KEYWORD={FORE},{BACK},{ATTR}:KEYWORD2=...\n\n"
 356                                                      "{FORE}, {BACK} and {ATTR} can be omitted, and the default will be used\n"
 357                                                      "\n Keywords:\n"
 358                                                      "   Global:       errors, disabled, reverse, gauge, header\n"
 359                                                      "                 input, inputmark, inputunchanged, commandlinemark\n"
 360                                                      "                 bbarhotkey, bbarbutton, statusbar\n"
 361                                                      "   File display: normal, selected, marked, markselect\n"
 362                                                      "   Dialog boxes: dnormal, dfocus, dhotnormal, dhotfocus, errdhotnormal,\n"
 363                                                      "                 errdhotfocus\n"
 364                                                      "   Menus:        menunormal, menuhot, menusel, menuhotsel, menuinactive\n"
 365                                                      "   Popup menus:  pmenunormal, pmenusel, pmenutitle\n"
 366                                                      "   Editor:       editnormal, editbold, editmarked, editwhitespace,\n"
 367                                                      "                 editlinestate\n"
 368                                                      "   Viewer:       viewbold, viewunderline, viewselected\n"
 369                                                      "   Help:         helpnormal, helpitalic, helpbold, helplink, helpslink\n"),
 370                                                    /* TRANSLATORS: don't translate color names and attributes */
 371                                                    _("Standard Colors:\n"
 372                                                     "   black, gray, red, brightred, green, brightgreen, brown,\n"
 373                                                     "   yellow, blue, brightblue, magenta, brightmagenta, cyan,\n"
 374                                                     "   brightcyan, lightgray and white\n\n"
 375                                                     "Extended colors, when 256 colors are available:\n"
 376                                                     "   color16 to color255, or rgb000 to rgb555 and gray0 to gray23\n\n"
 377                                                     "Attributes:\n"
 378                                                     "   bold, underline, reverse, blink; append more with '+'\n")
 379                                                     );
 380 /* *INDENT-ON* */
 381
 382     return g_option_group_new ("color", mc_args__loc__colors_string,
 383                                _("Color options"), NULL, NULL);
 384
 385 }
 386
 387 /* --------------------------------------------------------------------------------------------- */
 388
 389 static gchar *
 390 mc_args_add_usage_info (void)
 391 {
 392     mc_args__loc__usage_string = g_strdup_printf ("[%s] %s\n %s - %s\n",
 393                                                   _("+number"),
 394                                                   _("[this_dir] [other_panel_dir]"),
 395                                                   _("+number"),
 396                                                   _
 397                                                   ("Set initial line number for the internal editor"));
 398     return mc_args__loc__usage_string;
 399 }
 400
 401 /* --------------------------------------------------------------------------------------------- */
 402
 403 static void
 404 mc_args_add_extended_info_to_help (void)
 405 {
 406     mc_args__loc__footer_string = g_strdup_printf ("%s",
 407                                                    _
 408                                                    ("\n"
 409                                                     "Please send any bug reports (including the output of `mc -V')\n"
 410                                                     "as tickets at www.midnight-commander.org\n"));
 411     mc_args__loc__header_string = g_strdup_printf (_("GNU Midnight Commander %s\n"), VERSION);
 412
 413 #if GLIB_CHECK_VERSION(2,12,0)
 414     g_option_context_set_description (context, mc_args__loc__footer_string);
 415     g_option_context_set_summary (context, mc_args__loc__header_string);
 416 #endif
 417 }
 418
 419 /* --------------------------------------------------------------------------------------------- */
 420
 421 static gchar *
 422 mc_args__convert_help_to_syscharset (const gchar * charset, const gchar * error_message,
 423                                      const gchar * help_str)
 424 {
 425     GString *buffer;
 426     GIConv conv;
 427     gchar *full_help_str;
 428
 429     buffer = g_string_new ("");
 430     conv = g_iconv_open (charset, "UTF-8");
 431     full_help_str = g_strdup_printf ("%s\n\n%s\n", error_message, help_str);
 432
 433     str_convert (conv, full_help_str, buffer);
 434
 435     g_free (full_help_str);
 436     g_iconv_close (conv);
 437
 438     return g_string_free (buffer, FALSE);
 439 }
 440
 441 /* --------------------------------------------------------------------------------------------- */
 442
 443 static gboolean
 444 parse_mc_e_argument (const gchar * option_name, const gchar * value, gpointer data, GError ** error)
 445 {
 446     (void) option_name;
 447     (void) data;
 448     (void) error;
 449
 450     mc_global.mc_run_mode = MC_RUN_EDITOR;
 451     mc_run_param0 = g_strdup (value);
 452
 453     return TRUE;
 454 }
 455
 456 /* --------------------------------------------------------------------------------------------- */
 457
 458 static gboolean
 459 parse_mc_v_argument (const gchar * option_name, const gchar * value, gpointer data, GError ** error)
 460 {
 461     (void) option_name;
 462     (void) data;
 463     (void) error;
 464
 465     mc_global.mc_run_mode = MC_RUN_VIEWER;
 466     mc_run_param0 = g_strdup (value);
 467
 468     return TRUE;
 469 }
 470
 471 /* --------------------------------------------------------------------------------------------- */
 472 /*** public functions ****************************************************************************/
 473 /* --------------------------------------------------------------------------------------------- */
 474
 475 gboolean
 476 mc_args_parse (int *argc, char ***argv, const char *translation_domain, GError ** error)
 477 {
 478     const gchar *_system_codepage;
 479     gboolean ok = TRUE;
 480
 481     _system_codepage = str_detect_termencoding ();
 482
 483 #ifdef ENABLE_NLS
 484     if (!str_isutf8 (_system_codepage))
 485         bind_textdomain_codeset ("mc", "UTF-8");
 486 #endif
 487
 488     context = g_option_context_new (mc_args_add_usage_info ());
 489
 490     g_option_context_set_ignore_unknown_options (context, FALSE);
 491
 492     mc_args_add_extended_info_to_help ();
 493
 494     main_group = g_option_group_new ("main", _("Main options"), _("Main options"), NULL, NULL);
 495
 496     g_option_group_add_entries (main_group, argument_main_table);
 497     g_option_context_set_main_group (context, main_group);
 498     g_option_group_set_translation_domain (main_group, translation_domain);
 499
 500     terminal_group = g_option_group_new ("terminal", _("Terminal options"),
 501                                          _("Terminal options"), NULL, NULL);
 502
 503     g_option_group_add_entries (terminal_group, argument_terminal_table);
 504     g_option_context_add_group (context, terminal_group);
 505     g_option_group_set_translation_domain (terminal_group, translation_domain);
 506
 507     color_group = mc_args_new_color_group ();
 508
 509     g_option_group_add_entries (color_group, argument_color_table);
 510     g_option_context_add_group (context, color_group);
 511     g_option_group_set_translation_domain (color_group, translation_domain);
 512
 513     if (!g_option_context_parse (context, argc, argv, error))
 514     {
 515         GError *error2 = NULL;
 516
 517         if (*error == NULL)
 518             *error = g_error_new (MC_ERROR, 0, "%s\n", _("Arguments parse error!"));
 519         else
 520         {
 521             gchar *help_str;
 522
 523 #if GLIB_CHECK_VERSION(2,14,0)
 524             help_str = g_option_context_get_help (context, TRUE, NULL);
 525 #else
 526             help_str = g_strdup ("");
 527 #endif
 528             if (str_isutf8 (_system_codepage))
 529                 error2 = g_error_new ((*error)->domain, (*error)->code, "%s\n\n%s\n",
 530                                       (*error)->message, help_str);
 531             else
 532             {
 533                 gchar *full_help_str;
 534
 535                 full_help_str =
 536                     mc_args__convert_help_to_syscharset (_system_codepage, (*error)->message,
 537                                                          help_str);
 538                 error2 = g_error_new ((*error)->domain, (*error)->code, "%s", full_help_str);
 539                 g_free (full_help_str);
 540             }
 541
 542             g_free (help_str);
 543             g_error_free (*error);
 544             *error = error2;
 545         }
 546
 547         ok = FALSE;
 548     }
 549
 550     g_option_context_free (context);
 551     mc_args_clean_temp_help_strings ();
 552
 553 #ifdef ENABLE_NLS
 554     if (!str_isutf8 (_system_codepage))
 555         bind_textdomain_codeset ("mc", _system_codepage);
 556 #endif
 557
 558     return ok;
 559 }
 560
 561 /* --------------------------------------------------------------------------------------------- */
 562
 563 gboolean
 564 mc_args_show_info (void)
 565 {
 566     if (mc_args__show_version)
 567     {
 568         show_version ();
 569         return FALSE;
 570     }
 571
 572     if (mc_args__show_datadirs)
 573     {
 574         printf ("%s (%s)\n", mc_global.sysconfig_dir, mc_global.share_data_dir);
 575         return FALSE;
 576     }
 577
 578     if (mc_args__show_datadirs_extended)
 579     {
 580         show_datadirs_extended ();
 581         return FALSE;
 582     }
 583
 584     if (mc_args__show_configure_opts)
 585     {
 586         show_configure_options ();
 587         return FALSE;
 588     }
 589
 590     return TRUE;
 591 }
 592
 593 /* --------------------------------------------------------------------------------------------- */
 594
 595 gboolean
 596 mc_setup_by_args (int argc, char **argv, GError ** error)
 597 {
 598     const char *base;
 599     char *tmp;
 600
 601     if (mc_args__force_colors)
 602         mc_global.tty.disable_colors = FALSE;
 603
 604 #ifdef HAVE_SUBSHELL_SUPPORT
 605     if (mc_args__nouse_subshell)
 606         mc_global.tty.use_subshell = FALSE;
 607 #endif /* HAVE_SUBSHELL_SUPPORT */
 608
 609 #ifdef ENABLE_VFS_SMB
 610     if (mc_args__debug_level != 0)
 611         smbfs_set_debug (mc_args__debug_level);
 612 #endif /* ENABLE_VFS_SMB */
 613
 614 #if defined ENABLE_VFS_FTP || defined ENABLE_VFS_FTP
 615     if (mc_args__netfs_logfile != NULL)
 616     {
 617         vfs_path_t *vpath;
 618
 619 #ifdef ENABLE_VFS_FTP
 620         vpath = vfs_path_from_str ("ftp://");
 621         mc_setctl (vpath, VFS_SETCTL_LOGFILE, (void *) mc_args__netfs_logfile);
 622         vfs_path_free (vpath);
 623 #endif /* ENABLE_VFS_FTP */
 624 #ifdef ENABLE_VFS_SMB
 625         vpath = vfs_path_from_str ("smb://");
 626         mc_setctl (vpath, VFS_SETCTL_LOGFILE, (void *) mc_args__netfs_logfile);
 627         vfs_path_free (vpath);
 628 #endif /* ENABLE_VFS_SMB */
 629     }
 630 #endif /* ENABLE_VFS_FTP || ENABLE_VFS_SMB */
 631
 632     base = x_basename (argv[0]);
 633     tmp = (argc > 0) ? argv[1] : NULL;
 634
 635     if (strncmp (base, "mce", 3) == 0 || strcmp (base, "vi") == 0)
 636     {
 637         /* mce* or vi is link to mc */
 638
 639         mc_run_param0 = g_strdup ("");
 640         if (tmp != NULL)
 641         {
 642             /*
 643              * Check for filename:lineno, followed by an optional colon.
 644              * This format is used by many programs (especially compilers)
 645              * in error messages and warnings. It is supported so that
 646              * users can quickly copy and paste file locations.
 647              */
 648             char *end, *p;
 649
 650             end = tmp + strlen (tmp);
 651             p = end;
 652
 653             if (p > tmp && p[-1] == ':')
 654                 p--;
 655             while (p > tmp && g_ascii_isdigit ((gchar) p[-1]))
 656                 p--;
 657             if (tmp < p && p < end && p[-1] == ':')
 658             {
 659                 char *fname;
 660                 struct stat st;
 661                 vfs_path_t *tmp_vpath, *fname_vpath;
 662                 gboolean ok;
 663
 664                 fname = g_strndup (tmp, p - 1 - tmp);
 665                 tmp_vpath = vfs_path_from_str (tmp);
 666                 fname_vpath = vfs_path_from_str (fname);
 667                 /*
 668                  * Check that the file before the colon actually exists.
 669                  * If it doesn't exist, revert to the old behavior.
 670                  */
 671                 ok = mc_stat (tmp_vpath, &st) == -1 && mc_stat (fname_vpath, &st) != -1;
 672                 vfs_path_free (tmp_vpath);
 673                 vfs_path_free (fname_vpath);
 674
 675                 if (ok)
 676                 {
 677                     mc_run_param0 = fname;
 678                     mc_args__edit_start_line = atoi (p);
 679                 }
 680                 else
 681                 {
 682                     g_free (fname);
 683                     goto try_plus_filename;
 684                 }
 685             }
 686             else
 687             {
 688               try_plus_filename:
 689                 if (*tmp == '+' && g_ascii_isdigit ((gchar) tmp[1]))
 690                 {
 691                     int start_line;
 692
 693                     start_line = atoi (tmp);
 694
 695                     /*
 696                      * If start_line is zero, position the cursor at the
 697                      * beginning of the file as other editors (vi, nano)
 698                      */
 699                     if (start_line == 0)
 700                         start_line++;
 701
 702                     if (start_line > 0)
 703                     {
 704                         char *file;
 705
 706                         file = (argc > 1) ? argv[2] : NULL;
 707                         if (file != NULL)
 708                         {
 709                             tmp = file;
 710                             mc_args__edit_start_line = start_line;
 711                         }
 712                     }
 713                 }
 714                 mc_run_param0 = g_strdup (tmp);
 715             }
 716         }
 717         mc_global.mc_run_mode = MC_RUN_EDITOR;
 718     }
 719     else if (strncmp (base, "mcv", 3) == 0 || strcmp (base, "view") == 0)
 720     {
 721         /* mcv* or view is link to mc */
 722
 723         if (tmp != NULL)
 724             mc_run_param0 = g_strdup (tmp);
 725         else
 726         {
 727             *error = g_error_new (MC_ERROR, 0, "%s\n", _("No arguments given to the viewer."));
 728             return FALSE;
 729         }
 730         mc_global.mc_run_mode = MC_RUN_VIEWER;
 731     }
 732 #ifdef USE_DIFF_VIEW
 733     else if (strncmp (base, "mcd", 3) == 0 || strcmp (base, "diff") == 0)
 734     {
 735         /* mcd* or diff is link to mc */
 736
 737         if (argc < 3)
 738         {
 739             *error = g_error_new (MC_ERROR, 0, "%s\n",
 740                                   _("Two files are required to evoke the diffviewer."));
 741             return FALSE;
 742         }
 743
 744         if (tmp != NULL)
 745         {
 746             mc_run_param0 = g_strdup (tmp);
 747             tmp = (argc > 1) ? argv[2] : NULL;
 748             if (tmp != NULL)
 749                 mc_run_param1 = g_strdup (tmp);
 750             mc_global.mc_run_mode = MC_RUN_DIFFVIEWER;
 751         }
 752     }
 753 #endif /* USE_DIFF_VIEW */
 754     else
 755     {
 756         /* MC is run as mc */
 757
 758         switch (mc_global.mc_run_mode)
 759         {
 760         case MC_RUN_EDITOR:
 761         case MC_RUN_VIEWER:
 762             /* mc_run_param0 is set up in parse_mc_e_argument() and parse_mc_v_argument() */
 763             break;
 764
 765         case MC_RUN_DIFFVIEWER:
 766             /* not implemented yet */
 767             break;
 768
 769         case MC_RUN_FULL:
 770         default:
 771             /* sets the current dir and the other dir */
 772             if (tmp != NULL)
 773             {
 774                 mc_run_param0 = g_strdup (tmp);
 775                 tmp = (argc > 1) ? argv[2] : NULL;
 776                 if (tmp != NULL)
 777                     mc_run_param1 = g_strdup (tmp);
 778             }
 779             mc_global.mc_run_mode = MC_RUN_FULL;
 780             break;
 781         }
 782     }
 783
 784     return TRUE;
 785 }
 786
 787 /* --------------------------------------------------------------------------------------------- */