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 #ifdef __GNUG__
  17 #pragma implementation
  18 #endif
  19
  20 #include "version.h"
  21 #include "lyx_main.h"
  22 #include "lyx_gui.h"
  23 #include "LyXView.h"
  24 #include "lyxfunc.h"
  25 #include "lyx_gui_misc.h"
  26 #include "lyxrc.h"
  27 #include "support/path.h"
  28 #include "support/filetools.h"
  29 #include "bufferlist.h"
  30 #include "debug.h"
  31 #include "support/FileInfo.h"
  32 #include "lastfiles.h"
  33 #include "intl.h"
  34 #include "lyxserver.h"
  35 #include "layout.h"
  36 #include "gettext.h"
  37 #include "kbmap.h"
  38 #include "MenuBackend.h"
  39 #include "ToolbarDefaults.h"
  40 #include "lyxlex.h"
  41
  42 using std::endl;
  43
  44 extern void LoadLyXFile(string const &);
  45 extern void QuitLyX();
  46
  47 string system_lyxdir;
  48 string build_lyxdir;
  49 string system_tempdir;
  50 string user_lyxdir;     // Default $HOME/.lyx
  51
  52 // Should this be kept global? Asger says Yes.
  53 DebugStream lyxerr;
  54
  55 LastFiles * lastfiles;
  56
  57 // This is the global bufferlist object
  58 BufferList bufferlist;
  59
  60 LyXServer * lyxserver = 0;
  61 // this should be static, but I need it in buffer.C
  62 bool finished = false;  // flag, that we are quitting the program
  63
  64 // convenient to have it here.
  65 kb_keymap * toplevel_keymap;
  66
  67
  68 LyX::LyX(int * argc, char * argv[])
  69 {
  70         // Prevent crash with --help
  71         lyxGUI = 0;
  72         lastfiles = 0;
  73
  74         // Here we need to parse the command line. At least
  75         // we need to parse for "-dbg" and "-help"
  76         bool gui = easyParse(argc, argv);
  77
  78         // Global bindings (this must be done as early as possible.) (Lgb)
  79         toplevel_keymap = new kb_keymap;
  80         defaultKeyBindings(toplevel_keymap);
  81
  82         // Make the GUI object, and let it take care of the
  83         // command line arguments that concerns it.
  84         lyxerr[Debug::INIT] << "Initializing LyXGUI..." << endl;
  85         lyxGUI = new LyXGUI(this, argc, argv, gui);
  86         lyxerr[Debug::INIT] << "Initializing LyXGUI...done" << endl;
  87
  88         // Now the GUI and LyX have taken care of their arguments, so
  89         // the only thing left on the command line should be
  90         // filenames. Let's check anyway.
  91         for (int argi = 1; argi < *argc ; ++argi) {
  92                 if (argv[argi][0] == '-') {
  93                         lyxerr << _("Wrong command line option `")
  94                                << argv[argi]
  95                                << _("'. Exiting.") << endl;
  96                         exit(0);
  97                 }
  98         }
  99
 100         // Initialization of LyX (reads lyxrc and more)
 101         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 102         init(argc, argv, gui);
 103         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 104
 105         lyxGUI->init();
 106
 107         // Load the files specified in the command line.
 108         if ((*argc) == 2)
 109                 lyxerr[Debug::INFO] << "Opening document..." << endl;
 110         else if ((*argc) > 2)
 111                 lyxerr[Debug::INFO] << "Opening documents..." << endl;
 112
 113         Buffer * last_loaded = 0;
 114
 115         for (int argi = (*argc) - 1; argi >= 1; --argi) {
 116                 Buffer * loadb = bufferlist.loadLyXFile(argv[argi]);
 117                 if (loadb != 0) {
 118                         last_loaded = loadb;
 119                 }
 120         }
 121
 122         if (first_start) {
 123                 string splash = i18nLibFileSearch("examples", "splash.lyx");
 124                 lyxerr[Debug::INIT] << "Opening splash document "
 125                                << splash << "..." << endl;
 126                 Buffer * loadb = bufferlist.loadLyXFile(splash);
 127                 if (loadb != 0) {
 128                         last_loaded = loadb;
 129                 }
 130         }
 131
 132         if (last_loaded != 0) {
 133                 lyxerr[Debug::INIT] << "Yes we loaded some files." << endl;
 134                 if (lyxrc.use_gui)
 135                         lyxGUI->regBuf(last_loaded);
 136         }
 137
 138         // Execute batch commands if available
 139         if (!batch_command.empty()) {
 140                 lyxerr << "About to handle -x '"
 141                        << batch_command << "'" << endl;
 142
 143                 // no buffer loaded, create one
 144                 if (!last_loaded)
 145                         last_loaded = bufferlist.newFile("tmpfile", string());
 146
 147                 // try to dispatch to last loaded buffer first
 148                 bool dispatched = last_loaded->Dispatch(batch_command);
 149
 150                 // if this was successful, return.
 151                 // Maybe we could do something more clever than aborting...
 152                 if (dispatched) {
 153                         lyxerr << "We are done!" << endl;
 154                         QuitLyX();
 155                         return;
 156                 }
 157
 158                 // otherwise, let the GUI handle the batch command
 159                 lyxGUI->regBuf(last_loaded);
 160                 lyxGUI->getLyXView()->getLyXFunc()->Dispatch(batch_command);
 161
 162                 // fall through...
 163         }
 164
 165         // Let the ball begin...
 166         lyxGUI->runTime();
 167 }
 168
 169
 170 // A destructor is always necessary  (asierra-970604)
 171 LyX::~LyX()
 172 {
 173         delete lastfiles;
 174         delete lyxGUI;
 175 }
 176
 177
 178 extern "C" void error_handler(int err_sig);
 179
 180 void LyX::init(int */*argc*/, char **argv, bool gui)
 181 {
 182         // Install the signal handlers
 183         signal(SIGHUP, error_handler);
 184         signal(SIGFPE, error_handler);
 185         signal(SIGSEGV, error_handler);
 186         signal(SIGINT, error_handler);
 187         signal(SIGTERM, error_handler);
 188
 189         //
 190         // Determine path of binary
 191         //
 192
 193         string fullbinpath;
 194         string binpath = subst(argv[0], '\\', '/');
 195         string binname = OnlyFilename(argv[0]);
 196         // Sorry for system specific code. (SMiyata)
 197         if (suffixIs(binname, ".exe"))
 198                 binname.erase(binname.length()-4, string::npos);
 199
 200         binpath = ExpandPath(binpath); // This expands ./ and ~/
 201
 202         if (!AbsolutePath(binpath)) {
 203                 string binsearchpath = GetEnvPath("PATH");
 204                 // This will make "src/lyx" work always :-)
 205                 binsearchpath += ";.";
 206                 binpath = FileOpenSearch(binsearchpath, argv[0]);
 207         }
 208
 209         fullbinpath = binpath;
 210         binpath = MakeAbsPath(OnlyPath(binpath));
 211
 212         // In case we are running in place and compiled with shared libraries
 213         if (suffixIs(binpath, "/.libs/"))
 214                 binpath.erase(binpath.length()-6, string::npos);
 215
 216         if (binpath.empty()) {
 217                 lyxerr << _("Warning: could not determine path of binary.")
 218                        << "\n"
 219                        << _("If you have problems, try starting LyX with an absolute path.")
 220                        << endl;
 221         }
 222         lyxerr[Debug::INIT] << "Path of binary: " << binpath << endl;
 223
 224         //
 225         // Determine system directory.
 226         //
 227
 228         // Directories are searched in this order:
 229         // 1) -sysdir command line parameter
 230         // 2) LYX_DIR_11x environment variable
 231         // 3) Maybe <path of binary>/TOP_SRCDIR/lib
 232         // 4) <path of binary>/../share/<name of binary>/
 233         // 4a) repeat 4 after following the Symlink if <path of
 234         //     binary> is a symbolic link.
 235         // 5) hardcoded lyx_dir
 236         // The directory is checked for the presence of the file
 237         // "chkconfig.ltx", and if that is present, the directory
 238         // is accepted as the system directory.
 239         // If no chkconfig.ltx file is found, a warning is given,
 240         // and the hardcoded lyx_dir is used.
 241
 242         // If we had a command line switch, system_lyxdir is already set
 243         string searchpath;
 244         if (!system_lyxdir.empty())
 245                 searchpath= MakeAbsPath(system_lyxdir) + ';';
 246
 247         // LYX_DIR_11x environment variable
 248         string lyxdir = GetEnvPath("LYX_DIR_11x");
 249
 250         if (!lyxdir.empty()) {
 251                 lyxerr[Debug::INIT] << "LYX_DIR_11x: " << lyxdir << endl;
 252                 searchpath += lyxdir + ';';
 253         }
 254
 255         // <path of binary>/TOP_SRCDIR/lib
 256         build_lyxdir = MakeAbsPath("../lib", binpath);
 257         if (!FileSearch(build_lyxdir, "lyxrc.defaults").empty()) {
 258                 searchpath += MakeAbsPath(AddPath(TOP_SRCDIR, "lib"),
 259                                           binpath) + ';';
 260                 lyxerr[Debug::INIT] << "Checking whether LyX is run in "
 261                         "place... yes" << endl;
 262         } else {
 263                 lyxerr[Debug::INIT]
 264                         << "Checking whether LyX is run in place... no"
 265                         << endl;
 266                 build_lyxdir.erase();
 267         }
 268
 269         bool FollowLink;
 270         do {
 271           // Path of binary/../share/name of binary/
 272                 searchpath += NormalizePath(AddPath(binpath, "../share/") +
 273                       OnlyFilename(binname)) + ';';
 274
 275           // Follow Symlinks
 276                 FileInfo file(fullbinpath, true);
 277                 FollowLink = file.isLink();
 278                 if (FollowLink) {
 279                         string Link;
 280                         if (LyXReadLink(fullbinpath, Link)) {
 281                                 fullbinpath = Link;
 282                                 binpath = MakeAbsPath(OnlyPath(fullbinpath));
 283                         }
 284                         else {
 285                                 FollowLink = false;
 286                         }
 287                 }
 288         } while (FollowLink);
 289
 290         // Hardcoded dir
 291         searchpath += LYX_DIR;
 292
 293         // If debugging, show complete search path
 294         lyxerr[Debug::INIT] << "System directory search path: "
 295                             << searchpath << endl;
 296
 297         string const filename = "chkconfig.ltx";
 298         string temp = FileOpenSearch(searchpath, filename, string());
 299         system_lyxdir = OnlyPath(temp);
 300
 301         // Reduce "path/../path" stuff out of system directory
 302         system_lyxdir = NormalizePath(system_lyxdir);
 303
 304         bool path_shown = false;
 305
 306         // Warn if environment variable is set, but unusable
 307         if (!lyxdir.empty()) {
 308                 if (system_lyxdir != NormalizePath(lyxdir)) {
 309                         lyxerr <<_("LYX_DIR_11x environment variable no good.")
 310                                << '\n'
 311                                << _("System directory set to: ")
 312                                << system_lyxdir << endl;
 313                         path_shown = true;
 314                 }
 315         }
 316
 317         // Warn the user if we couldn't find "chkconfig.ltx"
 318         if (system_lyxdir == "./") {
 319                 lyxerr <<_("LyX Warning! Couldn't determine system directory.")
 320                        <<_("Try the '-sysdir' command line parameter or")
 321                        <<_("set the environment variable LYX_DIR_11x to the "
 322                            "LyX system directory")
 323                        << _("containing the file `chkconfig.ltx'.") << endl;
 324                 if (!path_shown)
 325                         lyxerr << _("Using built-in default ")
 326                                << LYX_DIR << _(" but expect problems.")
 327                                << endl;
 328                 else
 329                         lyxerr << _("Expect problems.") << endl;
 330                 system_lyxdir = LYX_DIR;
 331                 path_shown = true;
 332         }
 333
 334         // Report the system directory if debugging is on
 335         if (!path_shown)
 336                 lyxerr[Debug::INIT] << "System directory: '"
 337                                     << system_lyxdir << '\'' << endl;
 338
 339         //
 340         // Determine user lyx-dir
 341         //
 342
 343         // Directories are searched in this order:
 344         // 1) -userdir command line parameter
 345         // 2) LYX_USERDIR_11x environment variable
 346         // 3) $HOME/.<name of binary>
 347
 348         // If we had a command line switch, user_lyxdir is already set
 349         bool explicit_userdir = true;
 350         if (user_lyxdir.empty()) {
 351
 352         // LYX_USERDIR_11x environment variable
 353                 user_lyxdir = GetEnvPath("LYX_USERDIR_11x");
 354
 355         // default behaviour
 356                 if (user_lyxdir.empty())
 357                         user_lyxdir = AddPath(GetEnvPath("HOME"),
 358                                                         string(".") + PACKAGE);
 359                         explicit_userdir = false;
 360         }
 361
 362         lyxerr[Debug::INIT] << "User LyX directory: '"
 363                             <<  user_lyxdir << '\'' << endl;
 364
 365         // Check that user LyX directory is ok.
 366         queryUserLyXDir(explicit_userdir);
 367
 368         //
 369         // Load the layouts first
 370         //
 371
 372         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 373         LyXSetStyle();
 374
 375         //
 376         // Shine up lyxrc defaults
 377         //
 378
 379         // Default template path: system_dir/templates
 380         if (lyxrc.template_path.empty()){
 381                 lyxrc.template_path = AddPath(system_lyxdir, "templates");
 382         }
 383
 384         // Default lastfiles file: $HOME/.lyx/lastfiles
 385         if (lyxrc.lastfiles.empty()){
 386                 lyxrc.lastfiles = AddName(user_lyxdir, "lastfiles");
 387         }
 388
 389         // Disable gui when either lyxrc or easyparse says so
 390         if (!gui)
 391                 lyxrc.use_gui = false;
 392
 393         // Calculate screen dpi as average of x-DPI and y-DPI:
 394         if (lyxrc.use_gui) {
 395                 lyxrc.dpi = getScreenDPI();
 396                 lyxerr[Debug::INIT] << "DPI setting detected to be "
 397                                                 << lyxrc.dpi + 0.5 << endl;
 398         } else {
 399                 lyxrc.dpi = 1; // I hope this is safe
 400         }
 401
 402         //
 403         // Read configuration files
 404         //
 405
 406         ReadRcFile("lyxrc.defaults");
 407 //      system_lyxrc = lyxrc;
 408         // If there is a preferences file we read that instead
 409         // of the old lyxrc file.
 410         if (!ReadRcFile("preferences"))
 411             ReadRcFile("lyxrc");
 412
 413         // Ensure that we have really read a bind file, so that LyX is
 414         // usable.
 415         if (!lyxrc.hasBindFile)
 416                 lyxrc.ReadBindFile();
 417
 418         // Read menus
 419         ReadUIFile(lyxrc.ui_file);
 420
 421         // Bind the X dead keys to the corresponding LyX functions if
 422         // necessary.
 423         if (lyxrc.override_x_deadkeys)
 424                 deadKeyBindings(toplevel_keymap);
 425
 426         if (lyxerr.debugging(Debug::LYXRC)) {
 427                 lyxrc.print();
 428         }
 429
 430         // Create temp directory
 431         system_tempdir = CreateLyXTmpDir(lyxrc.tempdir_path);
 432         if (lyxerr.debugging(Debug::INIT)) {
 433                 lyxerr << "LyX tmp dir: `" << system_tempdir << '\'' << endl;
 434         }
 435
 436         // load the lastfiles mini-database
 437         lyxerr[Debug::INIT] << "Reading lastfiles `"
 438                             << lyxrc.lastfiles << "'..." << endl;
 439         lastfiles = new LastFiles(lyxrc.lastfiles,
 440                                   lyxrc.check_lastfiles,
 441                                   lyxrc.num_lastfiles);
 442
 443         // start up the lyxserver. (is this a bit early?) (Lgb)
 444         // 0.12 this will be way to early, we need the GUI to be initialized
 445         // first, so move it for now.
 446         // lyxserver = new LyXServer;
 447 }
 448
 449 // These are the default bindings known to LyX
 450 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 451 {
 452         kbmap->bind("Right", LFUN_RIGHT);
 453         kbmap->bind("Left", LFUN_LEFT);
 454         kbmap->bind("Up", LFUN_UP);
 455         kbmap->bind("Down", LFUN_DOWN);
 456
 457         kbmap->bind("Tab", LFUN_TAB);
 458
 459         kbmap->bind("Home", LFUN_HOME);
 460         kbmap->bind("End", LFUN_END);
 461         kbmap->bind("Prior", LFUN_PRIOR);
 462         kbmap->bind("Next", LFUN_NEXT);
 463
 464         kbmap->bind("Return", LFUN_BREAKPARAGRAPH);
 465         kbmap->bind("~C-~S-~M-nobreakspace", LFUN_PROTECTEDSPACE);
 466
 467         kbmap->bind("Delete", LFUN_DELETE);
 468         kbmap->bind("BackSpace", LFUN_BACKSPACE);
 469
 470         // kbmap->bindings to enable the use of the numeric keypad
 471         // e.g. Num Lock set
 472         kbmap->bind("KP_0", LFUN_SELFINSERT);
 473         kbmap->bind("KP_Decimal", LFUN_SELFINSERT);
 474         kbmap->bind("KP_Enter", LFUN_SELFINSERT);
 475         kbmap->bind("KP_1", LFUN_SELFINSERT);
 476         kbmap->bind("KP_2", LFUN_SELFINSERT);
 477         kbmap->bind("KP_3", LFUN_SELFINSERT);
 478         kbmap->bind("KP_4", LFUN_SELFINSERT);
 479         kbmap->bind("KP_5", LFUN_SELFINSERT);
 480         kbmap->bind("KP_6", LFUN_SELFINSERT);
 481         kbmap->bind("KP_Add", LFUN_SELFINSERT);
 482         kbmap->bind("KP_7", LFUN_SELFINSERT);
 483         kbmap->bind("KP_8", LFUN_SELFINSERT);
 484         kbmap->bind("KP_9", LFUN_SELFINSERT);
 485         kbmap->bind("KP_Divide", LFUN_SELFINSERT);
 486         kbmap->bind("KP_Multiply", LFUN_SELFINSERT);
 487         kbmap->bind("KP_Subtract", LFUN_SELFINSERT);
 488
 489         /* Most self-insert keys are handled in the 'default:' section of
 490          * WorkAreaKeyPress - so we don't have to define them all.
 491          * However keys explicit decleared as self-insert are
 492          * handled seperatly (LFUN_SELFINSERT.) Lgb. */
 493
 494         kbmap->bind("C-Tab", LFUN_TABINSERT);  // ale970515
 495         kbmap->bind("S-Tab", LFUN_SHIFT_TAB);  // jug20000522
 496 }
 497
 498 // LyX can optionally take over the handling of deadkeys
 499 void LyX::deadKeyBindings(kb_keymap * kbmap)
 500 {
 501         // bindKeyings for transparent handling of deadkeys
 502         // The keysyms are gotten from XFree86 X11R6
 503         kbmap->bind("~C-~S-~M-dead_acute", LFUN_ACUTE);
 504         kbmap->bind("~C-~S-~M-dead_breve", LFUN_BREVE);
 505         kbmap->bind("~C-~S-~M-dead_caron", LFUN_CARON);
 506         kbmap->bind("~C-~S-~M-dead_cedilla", LFUN_CEDILLA);
 507         kbmap->bind("~C-~S-~M-dead_abovering", LFUN_CIRCLE);
 508         kbmap->bind("~C-~S-~M-dead_circumflex", LFUN_CIRCUMFLEX);
 509         kbmap->bind("~C-~S-~M-dead_abovedot", LFUN_DOT);
 510         kbmap->bind("~C-~S-~M-dead_grave", LFUN_GRAVE);
 511         kbmap->bind("~C-~S-~M-dead_doubleacute", LFUN_HUNG_UMLAUT);
 512         kbmap->bind("~C-~S-~M-dead_macron", LFUN_MACRON);
 513         // nothing with this name
 514         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 515         kbmap->bind("~C-~S-~M-dead_tilde", LFUN_TILDE);
 516         kbmap->bind("~C-~S-~M-dead_diaeresis", LFUN_UMLAUT);
 517         // nothing with this name either...
 518         //kbmap->bind("~C-~S-~M-dead_underbar", LFUN_UNDERBAR);
 519         kbmap->bind("~C-~S-~M-dead_belowdot", LFUN_UNDERDOT);
 520         kbmap->bind("~C-~S-~M-dead_tie", LFUN_TIE);
 521         kbmap->bind("~C-~S-~M-dead_ogonek", LFUN_OGONEK);
 522 }
 523
 524
 525
 526 // This one is not allowed to use anything on the main form, since that
 527 // one does not exist yet. (Asger)
 528 void LyX::queryUserLyXDir(bool explicit_userdir)
 529 {
 530         // Does user directory exist?
 531         FileInfo fileInfo(user_lyxdir);
 532         if (fileInfo.isOK() && fileInfo.isDir()) {
 533                 first_start = false;
 534                 return;
 535         } else {
 536                 first_start = true;
 537         }
 538
 539         // Nope
 540         // Different wording if the user specifically requested a directory
 541         if (!AskQuestion( explicit_userdir
 542                          ? _("You have specified an invalid LyX directory.")
 543                          : _("You don't have a personal LyX directory.") ,
 544
 545                          _("It is needed to keep your own configuration."),
 546                          _("Should I try to set it up for you (recommended)?"))) {
 547                 lyxerr << _("Running without personal LyX directory.") << endl;
 548                 // No, let's use $HOME instead.
 549                 user_lyxdir = GetEnvPath("HOME");
 550                 return;
 551         }
 552
 553         // Tell the user what is going on
 554         lyxerr << _("LyX: Creating directory ") << user_lyxdir
 555                << _(" and running configure...") << endl;
 556
 557         // Create directory structure
 558         if (!createDirectory(user_lyxdir, 0755)) {
 559                 // Failed, let's use $HOME instead.
 560                 user_lyxdir = GetEnvPath("HOME");
 561                 lyxerr << _("Failed. Will use ") << user_lyxdir
 562                        << _(" instead.") << endl;
 563                 return;
 564         }
 565
 566         // Run configure in user lyx directory
 567         Path p(user_lyxdir);
 568         ::system(AddName(system_lyxdir, "configure").c_str());
 569         lyxerr << "LyX: " << _("Done!") << endl;
 570 }
 571
 572
 573 // Read the rc file `name'
 574 bool LyX::ReadRcFile(string const & name)
 575 {
 576         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 577
 578         string lyxrc_path = LibFileSearch(string(), name);
 579         if (!lyxrc_path.empty()){
 580                 lyxerr[Debug::INIT] << "Found " << name
 581                                     << " in " << lyxrc_path << endl;
 582                 if (lyxrc.read(lyxrc_path) < 0) {
 583                         WriteAlert(_("LyX Warning!"),
 584                                    _("Error while reading ")+lyxrc_path+".",
 585                                    _("Using built-in defaults."));
 586                         return false;
 587                 }
 588                 return true;
 589         } else
 590                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 591         return false;
 592 }
 593
 594
 595 // Read the ui file `name'
 596 void LyX::ReadUIFile(string const & name)
 597 {
 598         enum Uitags {
 599                 ui_menuset = 1,
 600                 ui_toolbar,
 601                 ui_last
 602         };
 603
 604         struct keyword_item uitags[ui_last-1] = {
 605                 { "menuset", ui_menuset },
 606                 { "toolbar", ui_toolbar }
 607         };
 608
 609         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 610
 611         string ui_path = LibFileSearch("ui", name, "ui");
 612
 613         if (ui_path.empty()) {
 614                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 615                 return;
 616         }
 617
 618         lyxerr[Debug::INIT] << "Found " << name
 619                             << " in " << ui_path << endl;
 620         LyXLex lex(uitags, ui_last - 1);
 621         lex.setFile(ui_path);
 622         if (!lex.IsOK()) {
 623                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 624                        << endl;
 625         }
 626
 627         if (lyxerr.debugging(Debug::PARSER))
 628                 lex.printTable(lyxerr);
 629
 630         while (lex.IsOK()) {
 631                 switch(lex.lex()) {
 632                 case ui_menuset:
 633                         menubackend.read(lex);
 634                         break;
 635
 636                 case ui_toolbar:
 637                         toolbardefaults.read(lex);
 638                         break;
 639
 640                 default:
 641                         lex.printError("LyX::ReadUFile: "
 642                                        "Unknown menu tag: `$$Token'");
 643                         break;
 644                 }
 645         }
 646 }
 647
 648
 649 // Set debugging level and report result to user
 650 void setDebuggingLevel(string const & dbgLevel)
 651 {
 652         lyxerr << _("Setting debug level to ") <<  dbgLevel << endl;
 653         lyxerr.level(Debug::value(dbgLevel));
 654         Debug::showLevel(lyxerr, lyxerr.level());
 655 }
 656
 657
 658 // Give command line help
 659 void commandLineHelp()
 660 {
 661         lyxerr << "LyX " LYX_VERSION << " of " LYX_RELEASE << endl;
 662         lyxerr <<
 663                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 664                   "Command line switches (case sensitive):\n"
 665                   "\t-help              summarize LyX usage\n"
 666                   "\t-userdir dir       try to set user directory to dir\n"
 667                   "\t-sysdir dir        try to set system directory to dir\n"
 668                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 669                   "\t-dbg feature[,feature]...\n"
 670                   "                  select the features to debug.\n"
 671                   "                  Type `lyx -dbg' to see the list of features\n"
 672                   "Check the LyX man page for more options.") << endl;
 673 }
 674
 675 bool LyX::easyParse(int * argc, char * argv[])
 676 {
 677         bool gui = true;
 678         int removeargs = 0; // used when options are read
 679         for(int i = 1; i < *argc; ++i) {
 680                 string arg = argv[i];
 681
 682                 // Check for -dbg int
 683                 if (arg == "-dbg") {
 684                         if (i + 1 < *argc) {
 685                                 setDebuggingLevel(argv[i + 1]);
 686                                 removeargs = 2;
 687                         } else {
 688                                 lyxerr << _("List of supported debug flags:")
 689                                        << endl;
 690                                 Debug::showTags(lyxerr);
 691                                 exit(0);
 692                         }
 693                 }
 694                 // Check for "-sysdir"
 695                 else if (arg == "-sysdir") {
 696                         if (i + 1 < *argc) {
 697                                 system_lyxdir = argv[i + 1];
 698                                 removeargs = 2;
 699                         } else {
 700                                 lyxerr << _("Missing directory for -sysdir switch!")
 701                                        << endl;
 702                                 exit(0);
 703                         }
 704                 }
 705                 // Check for "-userdir"
 706                 else if (arg == "-userdir") {
 707                         if (i + 1 < *argc) {
 708                                 user_lyxdir = argv[i + 1];
 709                                 removeargs = 2;
 710                         } else {
 711                                 lyxerr << _("Missing directory for -userdir switch!")
 712                                        << endl;
 713                                 exit(0);
 714                         }
 715                 }
 716                 // Check for --help or -help
 717                 else if (arg == "--help" || arg == "-help") {
 718                         commandLineHelp();
 719                         exit(0);
 720                 }
 721                 // Check for "-nw": No XWindows as for emacs this should
 722                 // give a LyX that could be used in a terminal window.
 723                 //else if (arg == "-nw") {
 724                 //      gui = false;
 725                 //}
 726
 727                 // Check for "-x": Execute commands
 728                 else if (arg == "-x" || arg == "--execute") {
 729                         if (i + 1 < *argc) {
 730                                 batch_command = string(argv[i + 1]);
 731                                 removeargs = 2;
 732                         }
 733                         else
 734                                 lyxerr << _("Missing command string after  -x switch!") << endl;
 735
 736                         // Argh. Setting gui to false segfaults..
 737                         //gui = false;
 738                 }
 739
 740                 else if (arg == "-e" || arg == "--export") {
 741                         if (i + 1 < *argc) {
 742                                 string type(argv[i+1]);
 743                                 removeargs = 2;
 744                                 batch_command = "buffer-export " + type;
 745                         } else
 746                                 lyxerr << _("Missing file type [eg latex, "
 747                                             "ps...] after ")
 748                                        << arg << _(" switch!") << endl;
 749                 }
 750                 else if (arg == "--import") {
 751                         if (i + 1 < *argc) {
 752                                 string type(argv[i+1]);
 753                                 string file(argv[i+2]);
 754                                 removeargs = 3;
 755
 756                                 batch_command = "buffer-import " + type + " " + file;
 757                                 lyxerr << "batch_command: "
 758                                        << batch_command << endl;
 759
 760                         } else
 761                                 lyxerr << _("Missing type [eg latex, "
 762                                             "ps...] after ")
 763                                        << arg << _(" switch!") << endl;
 764                 }
 765
 766                 if (removeargs > 0) {
 767                         // Now, remove used arguments by shifting
 768                         // the following ones removeargs places down.
 769                         (*argc) -= removeargs;
 770                         for (int j = i; j < (*argc); ++j)
 771                                 argv[j] = argv[j + removeargs];
 772                         --i; // After shift, check this number again.
 773                         removeargs = 0;
 774                 }
 775
 776         }
 777
 778         return gui;
 779 }
 780
 781
 782 extern "C"
 783 void error_handler(int err_sig)
 784 {
 785         switch (err_sig) {
 786         case SIGHUP:
 787                 lyxerr << "\nlyx: SIGHUP signal caught" << endl;
 788                 break;
 789         case SIGINT:
 790                 // no comments
 791                 break;
 792         case SIGFPE:
 793                 lyxerr << "\nlyx: SIGFPE signal caught" << endl;
 794                 break;
 795         case SIGSEGV:
 796                 lyxerr << "\nlyx: SIGSEGV signal caught" << endl;
 797                 lyxerr <<
 798                         "Sorry, you have found a bug in LyX."
 799                         " If possible, please read 'Known bugs'\n"
 800                         "under the Help menu and then send us "
 801                         "a full bug report. Thanks!" << endl;
 802                 break;
 803         case SIGTERM:
 804                 // no comments
 805                 break;
 806         }
 807
 808         // Deinstall the signal handlers
 809         signal(SIGHUP, SIG_DFL);
 810         signal(SIGINT, SIG_DFL);
 811         signal(SIGFPE, SIG_DFL);
 812         signal(SIGSEGV, SIG_DFL);
 813         signal(SIGTERM, SIG_DFL);
 814
 815         bufferlist.emergencyWriteAll();
 816
 817         lyxerr << "Bye." << endl;
 818         if(err_sig!= SIGHUP &&
 819            (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
 820                 lyx::abort();
 821         exit(0);
 822 }