src/lyx_main.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2000 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #include <cstdlib>
  14 #include <csignal>
  15
  16 #include "version.h"
  17 #include "lyx_main.h"
  18 #include "lyx_gui.h"
  19 #include "LyXView.h"
  20 #include "lyxfunc.h"
  21 #include "lyx_gui_misc.h"
  22 #include "lyxrc.h"
  23 #include "support/path.h"
  24 #include "support/filetools.h"
  25 #include "bufferlist.h"
  26 #include "debug.h"
  27 #include "support/FileInfo.h"
  28 #include "lastfiles.h"
  29 #include "intl.h"
  30 #include "lyxserver.h"
  31 #include "layout.h"
  32 #include "gettext.h"
  33 #include "kbmap.h"
  34
  35 using std::endl;
  36
  37 extern void LoadLyXFile(string const &);
  38
  39 string system_lyxdir;
  40 string build_lyxdir;
  41 string system_tempdir;
  42 string user_lyxdir;     // Default $HOME/.lyx
  43
  44 // Should this be kept global? Asger says Yes.
  45 DebugStream lyxerr;
  46
  47 LastFiles * lastfiles;
  48
  49 // This is the global bufferlist object
  50 BufferList bufferlist;
  51
  52 LyXServer * lyxserver = 0;
  53 // this should be static, but I need it in buffer.C
  54 bool finished = false;  // flag, that we are quitting the program
  55
  56 // convenient to have it here.
  57 kb_keymap * toplevel_keymap;
  58
  59
  60 LyX::LyX(int * argc, char * argv[])
  61 {
  62         // Prevent crash with --help
  63         lyxGUI = 0;
  64         lastfiles = 0;
  65
  66         // Here we need to parse the command line. At least
  67         // we need to parse for "-dbg" and "-help"
  68         bool gui = easyParse(argc, argv);
  69
  70         // Global bindings (this must be done as early as possible.) (Lgb)
  71         toplevel_keymap = new kb_keymap;
  72         defaultKeyBindings(toplevel_keymap);
  73
  74         // Make the GUI object, and let it take care of the
  75         // command line arguments that concerns it.
  76         lyxerr[Debug::INIT] << "Initializing LyXGUI..." << endl;
  77         lyxGUI = new LyXGUI(this, argc, argv, gui);
  78         lyxerr[Debug::INIT] << "Initializing LyXGUI...done" << endl;
  79
  80         // Now the GUI and LyX have taken care of their arguments, so
  81         // the only thing left on the command line should be
  82         // filenames. Let's check anyway.
  83         for (int argi = 1; argi < *argc ; ++argi) {
  84                 if (argv[argi][0] == '-') {
  85                         lyxerr << _("Wrong command line option `")
  86                                << argv[argi]
  87                                << _("'. Exiting.") << endl;
  88                         exit(0);
  89                 }
  90         }
  91
  92
  93
  94         // Initialization of LyX (reads lyxrc and more)
  95         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
  96         init(argc, argv, gui);
  97         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
  98
  99         lyxGUI->init();
 100
 101         // Load the files specified in the command line.
 102         if ((*argc) == 2)
 103                 lyxerr[Debug::INFO] << "Opening document..." << endl;
 104         else if ((*argc) > 2)
 105                 lyxerr[Debug::INFO] << "Opening documents..." << endl;
 106
 107         Buffer * last_loaded = 0;
 108
 109         for (int argi = (*argc) - 1; argi >= 1; --argi) {
 110                 Buffer * loadb = bufferlist.loadLyXFile(argv[argi]);
 111                 if (loadb != 0) {
 112                         last_loaded = loadb;
 113                 }
 114         }
 115
 116         if (first_start) {
 117                 string splash = i18nLibFileSearch("examples", "splash.lyx");
 118                 lyxerr[Debug::INIT] << "Opening splash document "
 119                                << splash << "..." << endl;
 120                 Buffer * loadb = bufferlist.loadLyXFile(splash);
 121                 if (loadb != 0) {
 122                         last_loaded = loadb;
 123                 }
 124         }
 125
 126         if (last_loaded != 0) {
 127                 lyxerr[Debug::INIT] << "Yes we loaded some files." << endl;
 128                 if (lyxrc.use_gui)
 129                         lyxGUI->regBuf(last_loaded);
 130         }
 131
 132         // Execute batch commands if available
 133         if (!batch_command.empty()) {
 134                 lyxerr << "About to handle -x '" << batch_command << "'" << endl;
 135
 136                 // no buffer loaded, create one
 137                 if (!last_loaded)
 138                         last_loaded = bufferlist.newFile("tmpfile", string());
 139
 140                 // try to dispatch to last loaded buffer first
 141                 bool dispatched = last_loaded->Dispatch(batch_command);
 142
 143                 // if this was successful, return.
 144                 // Maybe we could do something more clever than aborting...
 145                 if (dispatched) {
 146                         lyxerr << "We are done!" << endl;
 147                         return;
 148                 }
 149
 150                 // otherwise, let the GUI handle the batch command
 151                 lyxGUI->regBuf(last_loaded);
 152                 lyxGUI->getLyXView()->getLyXFunc()->Dispatch(batch_command);
 153
 154                 // fall through...
 155         }
 156
 157         // Let the ball begin...
 158         lyxGUI->runTime();
 159 }
 160
 161
 162 // A destructor is always necessary  (asierra-970604)
 163 LyX::~LyX()
 164 {
 165         delete lastfiles;
 166         delete lyxGUI;
 167 }
 168
 169
 170 extern "C" void error_handler(int err_sig);
 171
 172 void LyX::init(int */*argc*/, char **argv, bool gui)
 173 {
 174         // Install the signal handlers
 175         signal(SIGHUP, error_handler);
 176         signal(SIGFPE, error_handler);
 177         signal(SIGSEGV, error_handler);
 178         signal(SIGINT, error_handler);
 179         signal(SIGTERM, error_handler);
 180
 181         //
 182         // Determine path of binary
 183         //
 184
 185         string fullbinpath;
 186         string binpath = subst(argv[0], '\\', '/');
 187         string binname = OnlyFilename(argv[0]);
 188         // Sorry for system specific code. (SMiyata)
 189         if (suffixIs(binname, ".exe"))
 190                 binname.erase(binname.length()-4, string::npos);
 191
 192         binpath = ExpandPath(binpath); // This expands ./ and ~/
 193
 194         if (!AbsolutePath(binpath)) {
 195                 string binsearchpath = GetEnvPath("PATH");
 196                 // This will make "src/lyx" work always :-)
 197                 binsearchpath += ";.";
 198                 binpath = FileOpenSearch(binsearchpath, argv[0]);
 199         }
 200
 201         fullbinpath = binpath;
 202         binpath = MakeAbsPath(OnlyPath(binpath));
 203
 204         // In case we are running in place and compiled with shared libraries
 205         if (suffixIs(binpath, "/.libs/"))
 206                 binpath.erase(binpath.length()-6, string::npos);
 207
 208         if (binpath.empty()) {
 209                 lyxerr << _("Warning: could not determine path of binary.")
 210                        << "\n"
 211                        << _("If you have problems, try starting LyX with an absolute path.")
 212                        << endl;
 213         }
 214         lyxerr[Debug::INIT] << "Path of binary: " << binpath << endl;
 215
 216         //
 217         // Determine system directory.
 218         //
 219
 220         // Directories are searched in this order:
 221         // 1) -sysdir command line parameter
 222         // 2) LYX_DIR_11x environment variable
 223         // 3) Maybe <path of binary>/TOP_SRCDIR/lib
 224         // 4) <path of binary>/../share/<name of binary>/
 225         // 4a) repeat 4 after following the Symlink if <path of
 226         //     binary> is a symbolic link.
 227         // 5) hardcoded lyx_dir
 228         // The directory is checked for the presence of the file
 229         // "chkconfig.ltx", and if that is present, the directory
 230         // is accepted as the system directory.
 231         // If no chkconfig.ltx file is found, a warning is given,
 232         // and the hardcoded lyx_dir is used.
 233
 234         // If we had a command line switch, system_lyxdir is already set
 235         string searchpath;
 236         if (!system_lyxdir.empty())
 237                 searchpath= MakeAbsPath(system_lyxdir) + ';';
 238
 239         // LYX_DIR_11x environment variable
 240         string lyxdir = GetEnvPath("LYX_DIR_11x");
 241
 242         if (!lyxdir.empty()) {
 243                 lyxerr[Debug::INIT] << "LYX_DIR_11x: " << lyxdir << endl;
 244                 searchpath += lyxdir + ';';
 245         }
 246
 247         // <path of binary>/TOP_SRCDIR/lib
 248         build_lyxdir = MakeAbsPath("../lib", binpath);
 249         if (!FileSearch(build_lyxdir, "lyxrc.defaults").empty()) {
 250                 searchpath += MakeAbsPath(AddPath(TOP_SRCDIR, "lib"),
 251                                           binpath) + ';';
 252                 lyxerr[Debug::INIT] << "Checking whether LyX is run in "
 253                         "place... yes" << endl;
 254         } else {
 255                 lyxerr[Debug::INIT]
 256                         << "Checking whether LyX is run in place... no"
 257                         << endl;
 258                 build_lyxdir.erase();
 259         }
 260
 261         bool FollowLink;
 262         do {
 263           // Path of binary/../share/name of binary/
 264                 searchpath += NormalizePath(AddPath(binpath, "../share/") +
 265                       OnlyFilename(binname)) + ';';
 266
 267           // Follow Symlinks
 268                 FileInfo file(fullbinpath, true);
 269                 FollowLink = file.isLink();
 270                 if (FollowLink) {
 271                         string Link;
 272                         if (LyXReadLink(fullbinpath, Link)) {
 273                                 fullbinpath = Link;
 274                                 binpath = MakeAbsPath(OnlyPath(fullbinpath));
 275                         }
 276                         else {
 277                                 FollowLink = false;
 278                         }
 279                 }
 280         } while (FollowLink);
 281
 282         // Hardcoded dir
 283         searchpath += LYX_DIR;
 284
 285         // If debugging, show complete search path
 286         lyxerr[Debug::INIT] << "System directory search path: "
 287                             << searchpath << endl;
 288
 289         string const filename = "chkconfig.ltx";
 290         string temp = FileOpenSearch(searchpath, filename, string());
 291         system_lyxdir = OnlyPath(temp);
 292
 293         // Reduce "path/../path" stuff out of system directory
 294         system_lyxdir = NormalizePath(system_lyxdir);
 295
 296         bool path_shown = false;
 297
 298         // Warn if environment variable is set, but unusable
 299         if (!lyxdir.empty()) {
 300                 if (system_lyxdir != NormalizePath(lyxdir)) {
 301                         lyxerr <<_("LYX_DIR_11x environment variable no good.")
 302                                << '\n'
 303                                << _("System directory set to: ")
 304                                << system_lyxdir << endl;
 305                         path_shown = true;
 306                 }
 307         }
 308
 309         // Warn the user if we couldn't find "chkconfig.ltx"
 310         if (system_lyxdir == "./") {
 311                 lyxerr <<_("LyX Warning! Couldn't determine system directory.")
 312                        <<_("Try the '-sysdir' command line parameter or")
 313                        <<_("set the environment variable LYX_DIR_11x to the "
 314                            "LyX system directory")
 315                        << _("containing the file `chkconfig.ltx'.") << endl;
 316                 if (!path_shown)
 317                         lyxerr << _("Using built-in default ")
 318                                << LYX_DIR << _(" but expect problems.")
 319                                << endl;
 320                 else
 321                         lyxerr << _("Expect problems.") << endl;
 322                 system_lyxdir = LYX_DIR;
 323                 path_shown = true;
 324         }
 325
 326         // Report the system directory if debugging is on
 327         if (!path_shown)
 328                 lyxerr[Debug::INIT] << "System directory: '"
 329                                     << system_lyxdir << '\'' << endl;
 330
 331         //
 332         // Determine user lyx-dir
 333         //
 334
 335         // Directories are searched in this order:
 336         // 1) -userdir command line parameter
 337         // 2) LYX_USERDIR_11x environment variable
 338         // 3) $HOME/.<name of binary>
 339
 340         // If we had a command line switch, user_lyxdir is already set
 341         bool explicit_userdir = true;
 342         if (user_lyxdir.empty()) {
 343
 344         // LYX_USERDIR_11x environment variable
 345                 user_lyxdir = GetEnvPath("LYX_USERDIR_11x");
 346
 347         // default behaviour
 348                 if (user_lyxdir.empty())
 349                         user_lyxdir = AddPath(GetEnvPath("HOME"),
 350                                                         string(".") + PACKAGE);
 351                         explicit_userdir = false;
 352         }
 353
 354         lyxerr[Debug::INIT] << "User LyX directory: '"
 355                             <<  user_lyxdir << '\'' << endl;
 356
 357         // Check that user LyX directory is ok.
 358         queryUserLyXDir(explicit_userdir);
 359
 360         //
 361         // Load the layouts first
 362         //
 363
 364         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 365         LyXSetStyle();
 366
 367         //
 368         // Shine up lyxrc defaults
 369         //
 370
 371         // Default template path: system_dir/templates
 372         if (lyxrc.template_path.empty()){
 373                 lyxrc.template_path = AddPath(system_lyxdir, "templates");
 374         }
 375
 376         // Default lastfiles file: $HOME/.lyx/lastfiles
 377         if (lyxrc.lastfiles.empty()){
 378                 lyxrc.lastfiles = AddName(user_lyxdir, "lastfiles");
 379         }
 380
 381         // Disable gui when either lyxrc or easyparse says so
 382         if (!gui)
 383                 lyxrc.use_gui = false;
 384
 385         // Calculate screen dpi as average of x-DPI and y-DPI:
 386         if (lyxrc.use_gui) {
 387                 lyxrc.dpi = getScreenDPI();
 388                 lyxerr[Debug::INIT] << "DPI setting detected to be "
 389                                                 << lyxrc.dpi + 0.5 << endl;
 390         } else {
 391                 lyxrc.dpi = 1; // I hope this is safe
 392         }
 393
 394         //
 395         // Read configuration files
 396         //
 397
 398         ReadRcFile("lyxrc.defaults");
 399         ReadRcFile("lyxrc");
 400
 401         // Ensure that we have really read a bind file, so that LyX is
 402         // usable.
 403         if (!lyxrc.hasBindFile)
 404                 lyxrc.ReadBindFile();
 405
 406
 407         // Bind the X dead keys to the corresponding LyX functions if
 408         // necessary.
 409         if (lyxrc.override_x_deadkeys)
 410                 deadKeyBindings(toplevel_keymap);
 411
 412         if (lyxerr.debugging(Debug::LYXRC)) {
 413                 lyxrc.print();
 414         }
 415
 416         // Create temp directory
 417         system_tempdir = CreateLyXTmpDir(lyxrc.tempdir_path);
 418         if (lyxerr.debugging(Debug::INIT)) {
 419                 lyxerr << "LyX tmp dir: `" << system_tempdir << '\'' << endl;
 420         }
 421
 422         // load the lastfiles mini-database
 423         lyxerr[Debug::INIT] << "Reading lastfiles `"
 424                             << lyxrc.lastfiles << "'..." << endl;
 425         lastfiles = new LastFiles(lyxrc.lastfiles,
 426                                   lyxrc.check_lastfiles,
 427                                   lyxrc.num_lastfiles);
 428
 429         // start up the lyxserver. (is this a bit early?) (Lgb)
 430         // 0.12 this will be way to early, we need the GUI to be initialized
 431         // first, so move it for now.
 432         // lyxserver = new LyXServer;
 433 }
 434
 435 // These are the default bindings known to LyX
 436 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 437 {
 438         kbmap->bind("Right", LFUN_RIGHT);
 439         kbmap->bind("Left", LFUN_LEFT);
 440         kbmap->bind("Up", LFUN_UP);
 441         kbmap->bind("Down", LFUN_DOWN);
 442
 443         kbmap->bind("Tab", LFUN_TAB);
 444
 445         kbmap->bind("Home", LFUN_HOME);
 446         kbmap->bind("End", LFUN_END);
 447         kbmap->bind("Prior", LFUN_PRIOR);
 448         kbmap->bind("Next", LFUN_NEXT);
 449
 450         kbmap->bind("Return", LFUN_BREAKPARAGRAPH);
 451         kbmap->bind("~C-~S-~M-nobreakspace", LFUN_PROTECTEDSPACE);
 452
 453         kbmap->bind("Delete", LFUN_DELETE);
 454         kbmap->bind("BackSpace", LFUN_BACKSPACE);
 455
 456         // kbmap->bindings to enable the use of the numeric keypad
 457         // e.g. Num Lock set
 458         kbmap->bind("KP_0", LFUN_SELFINSERT);
 459         kbmap->bind("KP_Decimal", LFUN_SELFINSERT);
 460         kbmap->bind("KP_Enter", LFUN_SELFINSERT);
 461         kbmap->bind("KP_1", LFUN_SELFINSERT);
 462         kbmap->bind("KP_2", LFUN_SELFINSERT);
 463         kbmap->bind("KP_3", LFUN_SELFINSERT);
 464         kbmap->bind("KP_4", LFUN_SELFINSERT);
 465         kbmap->bind("KP_5", LFUN_SELFINSERT);
 466         kbmap->bind("KP_6", LFUN_SELFINSERT);
 467         kbmap->bind("KP_Add", LFUN_SELFINSERT);
 468         kbmap->bind("KP_7", LFUN_SELFINSERT);
 469         kbmap->bind("KP_8", LFUN_SELFINSERT);
 470         kbmap->bind("KP_9", LFUN_SELFINSERT);
 471         kbmap->bind("KP_Divide", LFUN_SELFINSERT);
 472         kbmap->bind("KP_Multiply", LFUN_SELFINSERT);
 473         kbmap->bind("KP_Subtract", LFUN_SELFINSERT);
 474
 475         /* Most self-insert keys are handled in the 'default:' section of
 476          * WorkAreaKeyPress - so we don't have to define them all.
 477          * However keys explicit decleared as self-insert are
 478          * handled seperatly (LFUN_SELFINSERT.) Lgb. */
 479
 480         kbmap->bind("C-Tab", LFUN_TABINSERT);  // ale970515
 481         kbmap->bind("S-Tab", LFUN_SHIFT_TAB);  // jug20000522
 482 }
 483
 484 // LyX can optionally take over the handling of deadkeys
 485 void LyX::deadKeyBindings(kb_keymap * kbmap)
 486 {
 487         // bindKeyings for transparent handling of deadkeys
 488         // The keysyms are gotten from XFree86 X11R6
 489         kbmap->bind("~C-~S-~M-dead_acute", LFUN_ACUTE);
 490         kbmap->bind("~C-~S-~M-dead_breve", LFUN_BREVE);
 491         kbmap->bind("~C-~S-~M-dead_caron", LFUN_CARON);
 492         kbmap->bind("~C-~S-~M-dead_cedilla", LFUN_CEDILLA);
 493         kbmap->bind("~C-~S-~M-dead_abovering", LFUN_CIRCLE);
 494         kbmap->bind("~C-~S-~M-dead_circumflex", LFUN_CIRCUMFLEX);
 495         kbmap->bind("~C-~S-~M-dead_abovedot", LFUN_DOT);
 496         kbmap->bind("~C-~S-~M-dead_grave", LFUN_GRAVE);
 497         kbmap->bind("~C-~S-~M-dead_doubleacute", LFUN_HUNG_UMLAUT);
 498         kbmap->bind("~C-~S-~M-dead_macron", LFUN_MACRON);
 499         // nothing with this name
 500         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 501         kbmap->bind("~C-~S-~M-dead_tilde", LFUN_TILDE);
 502         kbmap->bind("~C-~S-~M-dead_diaeresis", LFUN_UMLAUT);
 503         // nothing with this name either...
 504         //kbmap->bind("~C-~S-~M-dead_underbar", LFUN_UNDERBAR);
 505         kbmap->bind("~C-~S-~M-dead_belowdot", LFUN_UNDERDOT);
 506         kbmap->bind("~C-~S-~M-dead_tie", LFUN_TIE);
 507         kbmap->bind("~C-~S-~M-dead_ogonek", LFUN_OGONEK);
 508 }
 509
 510
 511
 512 // This one is not allowed to use anything on the main form, since that
 513 // one does not exist yet. (Asger)
 514 void LyX::queryUserLyXDir(bool explicit_userdir)
 515 {
 516         // Does user directory exist?
 517         FileInfo fileInfo(user_lyxdir);
 518         if (fileInfo.isOK() && fileInfo.isDir()) {
 519                 first_start = false;
 520                 return;
 521         } else {
 522                 first_start = true;
 523         }
 524
 525         // Nope
 526         // Different wording if the user specifically requested a directory
 527         if (!AskQuestion( explicit_userdir
 528                          ? _("You have specified an invalid LyX directory.")
 529                          : _("You don't have a personal LyX directory.") ,
 530
 531                          _("It is needed to keep your own configuration."),
 532                          _("Should I try to set it up for you (recommended)?"))) {
 533                 lyxerr << _("Running without personal LyX directory.") << endl;
 534                 // No, let's use $HOME instead.
 535                 user_lyxdir = GetEnvPath("HOME");
 536                 return;
 537         }
 538
 539         // Tell the user what is going on
 540         lyxerr << _("LyX: Creating directory ") << user_lyxdir
 541                << _(" and running configure...") << endl;
 542
 543         // Create directory structure
 544         if (!createDirectory(user_lyxdir, 0755)) {
 545                 // Failed, let's use $HOME instead.
 546                 user_lyxdir = GetEnvPath("HOME");
 547                 lyxerr << _("Failed. Will use ") << user_lyxdir
 548                        << _(" instead.") << endl;
 549                 return;
 550         }
 551
 552         // Run configure in user lyx directory
 553         Path p(user_lyxdir);
 554         system(AddName(system_lyxdir, "configure").c_str());
 555         lyxerr << "LyX: " << _("Done!") << endl;
 556 }
 557
 558
 559 // Read the rc file `name'
 560 void LyX::ReadRcFile(string const & name)
 561 {
 562         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 563
 564         string lyxrc_path = LibFileSearch(string(), name);
 565         if (!lyxrc_path.empty()){
 566                 lyxerr[Debug::INIT] << "Found " << name
 567                                     << " in " << lyxrc_path << endl;
 568                 if (lyxrc.read(lyxrc_path) < 0) {
 569                         WriteAlert(_("LyX Warning!"),
 570                                    _("Error while reading ")+lyxrc_path+".",
 571                                    _("Using built-in defaults."));
 572                 }
 573         } else
 574                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 575 }
 576
 577
 578 // Set debugging level and report result to user
 579 void setDebuggingLevel(string const & dbgLevel)
 580 {
 581         lyxerr << _("Setting debug level to ") <<  dbgLevel << endl;
 582         lyxerr.level(Debug::value(dbgLevel));
 583         Debug::showLevel(lyxerr, lyxerr.level());
 584 }
 585
 586
 587 // Give command line help
 588 void commandLineHelp()
 589 {
 590         lyxerr << "LyX " LYX_VERSION << " of " LYX_RELEASE << endl;
 591         lyxerr <<
 592                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 593                   "Command line switches (case sensitive):\n"
 594                   "\t-help           summarize LyX usage\n"
 595                   "\t-userdir dir      try to set user directory to dir\n"
 596                   "\t-sysdir dir       try to set system directory to dir\n"
 597                   "\t-width x        set the width of the main window\n"
 598                   "\t-height y       set the height of the main window\n"
 599                   "\t-xpos x         set the x position of the main window\n"
 600                   "\t-ypos y         set the y position of the main window\n"
 601                   "\t-dbg feature[,feature]...\n"
 602                   "                  select the features to debug.\n"
 603                   "                  Type `lyx -dbg' to see the list of features\n"
 604                   "Check the LyX man page for more options.") << endl;
 605 }
 606
 607 bool LyX::easyParse(int * argc, char * argv[])
 608 {
 609         bool gui = true;
 610         int removeargs = 0; // used when options are read
 611         for(int i = 1; i < *argc; ++i) {
 612                 string arg = argv[i];
 613
 614                 // Check for -dbg int
 615                 if (arg == "-dbg") {
 616                         if (i + 1 < *argc) {
 617                                 setDebuggingLevel(argv[i + 1]);
 618                                 removeargs = 2;
 619                         } else {
 620                                 lyxerr << _("List of supported debug flags:")
 621                                        << endl;
 622                                 Debug::showTags(lyxerr);
 623                                 exit(0);
 624                         }
 625                 }
 626                 // Check for "-sysdir"
 627                 else if (arg == "-sysdir") {
 628                         if (i + 1 < *argc) {
 629                                 system_lyxdir = argv[i + 1];
 630                                 removeargs = 2;
 631                         } else {
 632                                 lyxerr << _("Missing directory for -sysdir switch!")
 633                                        << endl;
 634                                 exit(0);
 635                         }
 636                 }
 637                 // Check for "-userdir"
 638                 else if (arg == "-userdir") {
 639                         if (i + 1 < *argc) {
 640                                 user_lyxdir = argv[i + 1];
 641                                 removeargs = 2;
 642                         } else {
 643                                 lyxerr << _("Missing directory for -userdir switch!")
 644                                        << endl;
 645                                 exit(0);
 646                         }
 647                 }
 648                 // Check for --help or -help
 649                 else if (arg == "--help" || arg == "-help") {
 650                         commandLineHelp();
 651                         exit(0);
 652                 }
 653                 // Check for "-nw": No XWindows as for emacs this should
 654                 // give a LyX that could be used in a terminal window.
 655                 //else if (arg == "-nw") {
 656                 //      gui = false;
 657                 //}
 658
 659                 // Check for "-x": Execute commands
 660                 else if (arg == "-x" || arg == "--execute") {
 661                         if (i + 1 < *argc) {
 662                                 batch_command = string(argv[i + 1]);
 663                                 removeargs = 2;
 664                         }
 665                         else
 666                                 lyxerr << _("Missing command string after  -x switch!") << endl;
 667
 668                         // Argh. Setting gui to false segfaults..
 669                         //gui = false;
 670                 }
 671
 672                 else if (arg == "-e" || arg == "--export") {
 673                         if (i + 1 < *argc) {
 674                                 string type(argv[i+1]);
 675                                 removeargs = 2;
 676
 677                                 if (type == "tex")
 678                                         type = "latex";
 679                                 else if (type == "ps")
 680                                         type = "postscript";
 681                                 else if (type == "text" || type == "txt")
 682                                         type = "ascii";
 683
 684                                 if (type == "latex" || type == "postscript"
 685                                     || type == "linuxdoc" || type == "docbook"
 686                                     || type == "ascii" || type == "html")
 687                                         batch_command = "buffer-export " + type;
 688                                 else
 689                                         lyxerr << _("Unknown file type '")
 690                                                << type << _("' after ")
 691                                                << arg << _(" switch!") << endl;
 692                         } else
 693                                 lyxerr << _("Missing file type [eg latex, "
 694                                             "ps...] after ")
 695                                        << arg << _(" switch!") << endl;
 696                 }
 697                 else if (arg == "--import") {
 698                         if (i + 1 < *argc) {
 699                                 string type(argv[i+1]);
 700                                 string file(argv[i+2]);
 701                                 removeargs = 3;
 702
 703                                 batch_command = "buffer-import " + type + " " + file;
 704                                 lyxerr << "batch_command: "
 705                                        << batch_command << endl;
 706
 707                         } else
 708                                 lyxerr << _("Missing type [eg latex, "
 709                                             "ps...] after ")
 710                                        << arg << _(" switch!") << endl;
 711                 }
 712
 713                 if (removeargs > 0) {
 714                         // Now, remove used arguments by shifting
 715                         // the following ones removeargs places down.
 716                         (*argc) -= removeargs;
 717                         for (int j = i; j < (*argc); ++j)
 718                                 argv[j] = argv[j + removeargs];
 719                         --i; // After shift, check this number again.
 720                         removeargs = 0;
 721                 }
 722
 723         }
 724
 725         return gui;
 726 }
 727
 728
 729 extern "C"
 730 void error_handler(int err_sig)
 731 {
 732         switch (err_sig) {
 733         case SIGHUP:
 734                 lyxerr << "\nlyx: SIGHUP signal caught" << endl;
 735                 break;
 736         case SIGINT:
 737                 // no comments
 738                 break;
 739         case SIGFPE:
 740                 lyxerr << "\nlyx: SIGFPE signal caught" << endl;
 741                 break;
 742         case SIGSEGV:
 743                 lyxerr << "\nlyx: SIGSEGV signal caught" << endl;
 744                 lyxerr <<
 745                         "Sorry, you have found a bug in LyX."
 746                         " If possible, please read 'Known bugs'\n"
 747                         "under the Help menu and then send us "
 748                         "a full bug report. Thanks!" << endl;
 749                 break;
 750         case SIGTERM:
 751                 // no comments
 752                 break;
 753         }
 754
 755         // Deinstall the signal handlers
 756         signal(SIGHUP, SIG_DFL);
 757         signal(SIGINT, SIG_DFL);
 758         signal(SIGFPE, SIG_DFL);
 759         signal(SIGSEGV, SIG_DFL);
 760         signal(SIGTERM, SIG_DFL);
 761
 762         bufferlist.emergencyWriteAll();
 763
 764         lyxerr << "Bye." << endl;
 765         if(err_sig!= SIGHUP &&
 766            (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
 767                 lyx::abort();
 768         exit(0);
 769 }