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 #ifdef NEW_MENUBAR
  39 # include "MenuBackend.h"
  40 #endif
  41 #include "ToolbarDefaults.h"
  42 #include "lyxlex.h"
  43
  44 using std::endl;
  45
  46 extern void LoadLyXFile(string const &);
  47
  48 string system_lyxdir;
  49 string build_lyxdir;
  50 string system_tempdir;
  51 string user_lyxdir;     // Default $HOME/.lyx
  52
  53 // Should this be kept global? Asger says Yes.
  54 DebugStream lyxerr;
  55
  56 LastFiles * lastfiles;
  57
  58 // This is the global bufferlist object
  59 BufferList bufferlist;
  60
  61 LyXServer * lyxserver = 0;
  62 // this should be static, but I need it in buffer.C
  63 bool finished = false;  // flag, that we are quitting the program
  64
  65 // convenient to have it here.
  66 kb_keymap * toplevel_keymap;
  67
  68
  69 LyX::LyX(int * argc, char * argv[])
  70 {
  71         // Prevent crash with --help
  72         lyxGUI = 0;
  73         lastfiles = 0;
  74
  75         // Here we need to parse the command line. At least
  76         // we need to parse for "-dbg" and "-help"
  77         bool gui = easyParse(argc, argv);
  78
  79         // Global bindings (this must be done as early as possible.) (Lgb)
  80         toplevel_keymap = new kb_keymap;
  81         defaultKeyBindings(toplevel_keymap);
  82
  83         // Make the GUI object, and let it take care of the
  84         // command line arguments that concerns it.
  85         lyxerr[Debug::INIT] << "Initializing LyXGUI..." << endl;
  86         lyxGUI = new LyXGUI(this, argc, argv, gui);
  87         lyxerr[Debug::INIT] << "Initializing LyXGUI...done" << endl;
  88
  89         // Now the GUI and LyX have taken care of their arguments, so
  90         // the only thing left on the command line should be
  91         // filenames. Let's check anyway.
  92         for (int argi = 1; argi < *argc ; ++argi) {
  93                 if (argv[argi][0] == '-') {
  94                         lyxerr << _("Wrong command line option `")
  95                                << argv[argi]
  96                                << _("'. Exiting.") << endl;
  97                         exit(0);
  98                 }
  99         }
 100
 101         // Initialization of LyX (reads lyxrc and more)
 102         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 103         init(argc, argv, gui);
 104         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 105
 106         lyxGUI->init();
 107
 108         // Load the files specified in the command line.
 109         if ((*argc) == 2)
 110                 lyxerr[Debug::INFO] << "Opening document..." << endl;
 111         else if ((*argc) > 2)
 112                 lyxerr[Debug::INFO] << "Opening documents..." << endl;
 113
 114         Buffer * last_loaded = 0;
 115
 116         for (int argi = (*argc) - 1; argi >= 1; --argi) {
 117                 Buffer * loadb = bufferlist.loadLyXFile(argv[argi]);
 118                 if (loadb != 0) {
 119                         last_loaded = loadb;
 120                 }
 121         }
 122
 123         if (first_start) {
 124                 string splash = i18nLibFileSearch("examples", "splash.lyx");
 125                 lyxerr[Debug::INIT] << "Opening splash document "
 126                                << splash << "..." << endl;
 127                 Buffer * loadb = bufferlist.loadLyXFile(splash);
 128                 if (loadb != 0) {
 129                         last_loaded = loadb;
 130                 }
 131         }
 132
 133         if (last_loaded != 0) {
 134                 lyxerr[Debug::INIT] << "Yes we loaded some files." << endl;
 135                 if (lyxrc.use_gui)
 136                         lyxGUI->regBuf(last_loaded);
 137         }
 138
 139         // Execute batch commands if available
 140         if (!batch_command.empty()) {
 141                 lyxerr << "About to handle -x '" << 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                         return;
 155                 }
 156
 157                 // otherwise, let the GUI handle the batch command
 158                 lyxGUI->regBuf(last_loaded);
 159                 lyxGUI->getLyXView()->getLyXFunc()->Dispatch(batch_command);
 160
 161                 // fall through...
 162         }
 163
 164         // Let the ball begin...
 165         lyxGUI->runTime();
 166 }
 167
 168
 169 // A destructor is always necessary  (asierra-970604)
 170 LyX::~LyX()
 171 {
 172         delete lastfiles;
 173         delete lyxGUI;
 174 }
 175
 176
 177 extern "C" void error_handler(int err_sig);
 178
 179 void LyX::init(int */*argc*/, char **argv, bool gui)
 180 {
 181         // Install the signal handlers
 182         signal(SIGHUP, error_handler);
 183         signal(SIGFPE, error_handler);
 184         signal(SIGSEGV, error_handler);
 185         signal(SIGINT, error_handler);
 186         signal(SIGTERM, error_handler);
 187
 188         //
 189         // Determine path of binary
 190         //
 191
 192         string fullbinpath;
 193         string binpath = subst(argv[0], '\\', '/');
 194         string binname = OnlyFilename(argv[0]);
 195         // Sorry for system specific code. (SMiyata)
 196         if (suffixIs(binname, ".exe"))
 197                 binname.erase(binname.length()-4, string::npos);
 198
 199         binpath = ExpandPath(binpath); // This expands ./ and ~/
 200
 201         if (!AbsolutePath(binpath)) {
 202                 string binsearchpath = GetEnvPath("PATH");
 203                 // This will make "src/lyx" work always :-)
 204                 binsearchpath += ";.";
 205                 binpath = FileOpenSearch(binsearchpath, argv[0]);
 206         }
 207
 208         fullbinpath = binpath;
 209         binpath = MakeAbsPath(OnlyPath(binpath));
 210
 211         // In case we are running in place and compiled with shared libraries
 212         if (suffixIs(binpath, "/.libs/"))
 213                 binpath.erase(binpath.length()-6, string::npos);
 214
 215         if (binpath.empty()) {
 216                 lyxerr << _("Warning: could not determine path of binary.")
 217                        << "\n"
 218                        << _("If you have problems, try starting LyX with an absolute path.")
 219                        << endl;
 220         }
 221         lyxerr[Debug::INIT] << "Path of binary: " << binpath << endl;
 222
 223         //
 224         // Determine system directory.
 225         //
 226
 227         // Directories are searched in this order:
 228         // 1) -sysdir command line parameter
 229         // 2) LYX_DIR_11x environment variable
 230         // 3) Maybe <path of binary>/TOP_SRCDIR/lib
 231         // 4) <path of binary>/../share/<name of binary>/
 232         // 4a) repeat 4 after following the Symlink if <path of
 233         //     binary> is a symbolic link.
 234         // 5) hardcoded lyx_dir
 235         // The directory is checked for the presence of the file
 236         // "chkconfig.ltx", and if that is present, the directory
 237         // is accepted as the system directory.
 238         // If no chkconfig.ltx file is found, a warning is given,
 239         // and the hardcoded lyx_dir is used.
 240
 241         // If we had a command line switch, system_lyxdir is already set
 242         string searchpath;
 243         if (!system_lyxdir.empty())
 244                 searchpath= MakeAbsPath(system_lyxdir) + ';';
 245
 246         // LYX_DIR_11x environment variable
 247         string lyxdir = GetEnvPath("LYX_DIR_11x");
 248
 249         if (!lyxdir.empty()) {
 250                 lyxerr[Debug::INIT] << "LYX_DIR_11x: " << lyxdir << endl;
 251                 searchpath += lyxdir + ';';
 252         }
 253
 254         // <path of binary>/TOP_SRCDIR/lib
 255         build_lyxdir = MakeAbsPath("../lib", binpath);
 256         if (!FileSearch(build_lyxdir, "lyxrc.defaults").empty()) {
 257                 searchpath += MakeAbsPath(AddPath(TOP_SRCDIR, "lib"),
 258                                           binpath) + ';';
 259                 lyxerr[Debug::INIT] << "Checking whether LyX is run in "
 260                         "place... yes" << endl;
 261         } else {
 262                 lyxerr[Debug::INIT]
 263                         << "Checking whether LyX is run in place... no"
 264                         << endl;
 265                 build_lyxdir.erase();
 266         }
 267
 268         bool FollowLink;
 269         do {
 270           // Path of binary/../share/name of binary/
 271                 searchpath += NormalizePath(AddPath(binpath, "../share/") +
 272                       OnlyFilename(binname)) + ';';
 273
 274           // Follow Symlinks
 275                 FileInfo file(fullbinpath, true);
 276                 FollowLink = file.isLink();
 277                 if (FollowLink) {
 278                         string Link;
 279                         if (LyXReadLink(fullbinpath, Link)) {
 280                                 fullbinpath = Link;
 281                                 binpath = MakeAbsPath(OnlyPath(fullbinpath));
 282                         }
 283                         else {
 284                                 FollowLink = false;
 285                         }
 286                 }
 287         } while (FollowLink);
 288
 289         // Hardcoded dir
 290         searchpath += LYX_DIR;
 291
 292         // If debugging, show complete search path
 293         lyxerr[Debug::INIT] << "System directory search path: "
 294                             << searchpath << endl;
 295
 296         string const filename = "chkconfig.ltx";
 297         string temp = FileOpenSearch(searchpath, filename, string());
 298         system_lyxdir = OnlyPath(temp);
 299
 300         // Reduce "path/../path" stuff out of system directory
 301         system_lyxdir = NormalizePath(system_lyxdir);
 302
 303         bool path_shown = false;
 304
 305         // Warn if environment variable is set, but unusable
 306         if (!lyxdir.empty()) {
 307                 if (system_lyxdir != NormalizePath(lyxdir)) {
 308                         lyxerr <<_("LYX_DIR_11x environment variable no good.")
 309                                << '\n'
 310                                << _("System directory set to: ")
 311                                << system_lyxdir << endl;
 312                         path_shown = true;
 313                 }
 314         }
 315
 316         // Warn the user if we couldn't find "chkconfig.ltx"
 317         if (system_lyxdir == "./") {
 318                 lyxerr <<_("LyX Warning! Couldn't determine system directory.")
 319                        <<_("Try the '-sysdir' command line parameter or")
 320                        <<_("set the environment variable LYX_DIR_11x to the "
 321                            "LyX system directory")
 322                        << _("containing the file `chkconfig.ltx'.") << endl;
 323                 if (!path_shown)
 324                         lyxerr << _("Using built-in default ")
 325                                << LYX_DIR << _(" but expect problems.")
 326                                << endl;
 327                 else
 328                         lyxerr << _("Expect problems.") << endl;
 329                 system_lyxdir = LYX_DIR;
 330                 path_shown = true;
 331         }
 332
 333         // Report the system directory if debugging is on
 334         if (!path_shown)
 335                 lyxerr[Debug::INIT] << "System directory: '"
 336                                     << system_lyxdir << '\'' << endl;
 337
 338         //
 339         // Determine user lyx-dir
 340         //
 341
 342         // Directories are searched in this order:
 343         // 1) -userdir command line parameter
 344         // 2) LYX_USERDIR_11x environment variable
 345         // 3) $HOME/.<name of binary>
 346
 347         // If we had a command line switch, user_lyxdir is already set
 348         bool explicit_userdir = true;
 349         if (user_lyxdir.empty()) {
 350
 351         // LYX_USERDIR_11x environment variable
 352                 user_lyxdir = GetEnvPath("LYX_USERDIR_11x");
 353
 354         // default behaviour
 355                 if (user_lyxdir.empty())
 356                         user_lyxdir = AddPath(GetEnvPath("HOME"),
 357                                                         string(".") + PACKAGE);
 358                         explicit_userdir = false;
 359         }
 360
 361         lyxerr[Debug::INIT] << "User LyX directory: '"
 362                             <<  user_lyxdir << '\'' << endl;
 363
 364         // Check that user LyX directory is ok.
 365         queryUserLyXDir(explicit_userdir);
 366
 367         //
 368         // Load the layouts first
 369         //
 370
 371         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 372         LyXSetStyle();
 373
 374         //
 375         // Shine up lyxrc defaults
 376         //
 377
 378         // Default template path: system_dir/templates
 379         if (lyxrc.template_path.empty()){
 380                 lyxrc.template_path = AddPath(system_lyxdir, "templates");
 381         }
 382
 383         // Default lastfiles file: $HOME/.lyx/lastfiles
 384         if (lyxrc.lastfiles.empty()){
 385                 lyxrc.lastfiles = AddName(user_lyxdir, "lastfiles");
 386         }
 387
 388         // Disable gui when either lyxrc or easyparse says so
 389         if (!gui)
 390                 lyxrc.use_gui = false;
 391
 392         // Calculate screen dpi as average of x-DPI and y-DPI:
 393         if (lyxrc.use_gui) {
 394                 lyxrc.dpi = getScreenDPI();
 395                 lyxerr[Debug::INIT] << "DPI setting detected to be "
 396                                                 << lyxrc.dpi + 0.5 << endl;
 397         } else {
 398                 lyxrc.dpi = 1; // I hope this is safe
 399         }
 400
 401         //
 402         // Read configuration files
 403         //
 404
 405         ReadRcFile("lyxrc.defaults");
 406         // If there is a preferences file we read that instead
 407         // of the old lyxrc file.
 408         if (!ReadRcFile("preferences"))
 409             ReadRcFile("lyxrc");
 410
 411         // Ensure that we have really read a bind file, so that LyX is
 412         // usable.
 413         if (!lyxrc.hasBindFile)
 414                 lyxrc.ReadBindFile();
 415
 416         // Read menus
 417         ReadUIFile(lyxrc.ui_file);
 418
 419         // Bind the X dead keys to the corresponding LyX functions if
 420         // necessary.
 421         if (lyxrc.override_x_deadkeys)
 422                 deadKeyBindings(toplevel_keymap);
 423
 424         if (lyxerr.debugging(Debug::LYXRC)) {
 425                 lyxrc.print();
 426         }
 427
 428         // Create temp directory
 429         system_tempdir = CreateLyXTmpDir(lyxrc.tempdir_path);
 430         if (lyxerr.debugging(Debug::INIT)) {
 431                 lyxerr << "LyX tmp dir: `" << system_tempdir << '\'' << endl;
 432         }
 433
 434         // load the lastfiles mini-database
 435         lyxerr[Debug::INIT] << "Reading lastfiles `"
 436                             << lyxrc.lastfiles << "'..." << endl;
 437         lastfiles = new LastFiles(lyxrc.lastfiles,
 438                                   lyxrc.check_lastfiles,
 439                                   lyxrc.num_lastfiles);
 440
 441         // start up the lyxserver. (is this a bit early?) (Lgb)
 442         // 0.12 this will be way to early, we need the GUI to be initialized
 443         // first, so move it for now.
 444         // lyxserver = new LyXServer;
 445 }
 446
 447 // These are the default bindings known to LyX
 448 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 449 {
 450         kbmap->bind("Right", LFUN_RIGHT);
 451         kbmap->bind("Left", LFUN_LEFT);
 452         kbmap->bind("Up", LFUN_UP);
 453         kbmap->bind("Down", LFUN_DOWN);
 454
 455         kbmap->bind("Tab", LFUN_TAB);
 456
 457         kbmap->bind("Home", LFUN_HOME);
 458         kbmap->bind("End", LFUN_END);
 459         kbmap->bind("Prior", LFUN_PRIOR);
 460         kbmap->bind("Next", LFUN_NEXT);
 461
 462         kbmap->bind("Return", LFUN_BREAKPARAGRAPH);
 463         kbmap->bind("~C-~S-~M-nobreakspace", LFUN_PROTECTEDSPACE);
 464
 465         kbmap->bind("Delete", LFUN_DELETE);
 466         kbmap->bind("BackSpace", LFUN_BACKSPACE);
 467
 468         // kbmap->bindings to enable the use of the numeric keypad
 469         // e.g. Num Lock set
 470         kbmap->bind("KP_0", LFUN_SELFINSERT);
 471         kbmap->bind("KP_Decimal", LFUN_SELFINSERT);
 472         kbmap->bind("KP_Enter", LFUN_SELFINSERT);
 473         kbmap->bind("KP_1", LFUN_SELFINSERT);
 474         kbmap->bind("KP_2", LFUN_SELFINSERT);
 475         kbmap->bind("KP_3", LFUN_SELFINSERT);
 476         kbmap->bind("KP_4", LFUN_SELFINSERT);
 477         kbmap->bind("KP_5", LFUN_SELFINSERT);
 478         kbmap->bind("KP_6", LFUN_SELFINSERT);
 479         kbmap->bind("KP_Add", LFUN_SELFINSERT);
 480         kbmap->bind("KP_7", LFUN_SELFINSERT);
 481         kbmap->bind("KP_8", LFUN_SELFINSERT);
 482         kbmap->bind("KP_9", LFUN_SELFINSERT);
 483         kbmap->bind("KP_Divide", LFUN_SELFINSERT);
 484         kbmap->bind("KP_Multiply", LFUN_SELFINSERT);
 485         kbmap->bind("KP_Subtract", LFUN_SELFINSERT);
 486
 487         /* Most self-insert keys are handled in the 'default:' section of
 488          * WorkAreaKeyPress - so we don't have to define them all.
 489          * However keys explicit decleared as self-insert are
 490          * handled seperatly (LFUN_SELFINSERT.) Lgb. */
 491
 492         kbmap->bind("C-Tab", LFUN_TABINSERT);  // ale970515
 493         kbmap->bind("S-Tab", LFUN_SHIFT_TAB);  // jug20000522
 494 }
 495
 496 // LyX can optionally take over the handling of deadkeys
 497 void LyX::deadKeyBindings(kb_keymap * kbmap)
 498 {
 499         // bindKeyings for transparent handling of deadkeys
 500         // The keysyms are gotten from XFree86 X11R6
 501         kbmap->bind("~C-~S-~M-dead_acute", LFUN_ACUTE);
 502         kbmap->bind("~C-~S-~M-dead_breve", LFUN_BREVE);
 503         kbmap->bind("~C-~S-~M-dead_caron", LFUN_CARON);
 504         kbmap->bind("~C-~S-~M-dead_cedilla", LFUN_CEDILLA);
 505         kbmap->bind("~C-~S-~M-dead_abovering", LFUN_CIRCLE);
 506         kbmap->bind("~C-~S-~M-dead_circumflex", LFUN_CIRCUMFLEX);
 507         kbmap->bind("~C-~S-~M-dead_abovedot", LFUN_DOT);
 508         kbmap->bind("~C-~S-~M-dead_grave", LFUN_GRAVE);
 509         kbmap->bind("~C-~S-~M-dead_doubleacute", LFUN_HUNG_UMLAUT);
 510         kbmap->bind("~C-~S-~M-dead_macron", LFUN_MACRON);
 511         // nothing with this name
 512         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 513         kbmap->bind("~C-~S-~M-dead_tilde", LFUN_TILDE);
 514         kbmap->bind("~C-~S-~M-dead_diaeresis", LFUN_UMLAUT);
 515         // nothing with this name either...
 516         //kbmap->bind("~C-~S-~M-dead_underbar", LFUN_UNDERBAR);
 517         kbmap->bind("~C-~S-~M-dead_belowdot", LFUN_UNDERDOT);
 518         kbmap->bind("~C-~S-~M-dead_tie", LFUN_TIE);
 519         kbmap->bind("~C-~S-~M-dead_ogonek", LFUN_OGONEK);
 520 }
 521
 522
 523
 524 // This one is not allowed to use anything on the main form, since that
 525 // one does not exist yet. (Asger)
 526 void LyX::queryUserLyXDir(bool explicit_userdir)
 527 {
 528         // Does user directory exist?
 529         FileInfo fileInfo(user_lyxdir);
 530         if (fileInfo.isOK() && fileInfo.isDir()) {
 531                 first_start = false;
 532                 return;
 533         } else {
 534                 first_start = true;
 535         }
 536
 537         // Nope
 538         // Different wording if the user specifically requested a directory
 539         if (!AskQuestion( explicit_userdir
 540                          ? _("You have specified an invalid LyX directory.")
 541                          : _("You don't have a personal LyX directory.") ,
 542
 543                          _("It is needed to keep your own configuration."),
 544                          _("Should I try to set it up for you (recommended)?"))) {
 545                 lyxerr << _("Running without personal LyX directory.") << endl;
 546                 // No, let's use $HOME instead.
 547                 user_lyxdir = GetEnvPath("HOME");
 548                 return;
 549         }
 550
 551         // Tell the user what is going on
 552         lyxerr << _("LyX: Creating directory ") << user_lyxdir
 553                << _(" and running configure...") << endl;
 554
 555         // Create directory structure
 556         if (!createDirectory(user_lyxdir, 0755)) {
 557                 // Failed, let's use $HOME instead.
 558                 user_lyxdir = GetEnvPath("HOME");
 559                 lyxerr << _("Failed. Will use ") << user_lyxdir
 560                        << _(" instead.") << endl;
 561                 return;
 562         }
 563
 564         // Run configure in user lyx directory
 565         Path p(user_lyxdir);
 566         system(AddName(system_lyxdir, "configure").c_str());
 567         lyxerr << "LyX: " << _("Done!") << endl;
 568 }
 569
 570
 571 // Read the rc file `name'
 572 bool LyX::ReadRcFile(string const & name)
 573 {
 574         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 575
 576         string lyxrc_path = LibFileSearch(string(), name);
 577         if (!lyxrc_path.empty()){
 578                 lyxerr[Debug::INIT] << "Found " << name
 579                                     << " in " << lyxrc_path << endl;
 580                 if (lyxrc.read(lyxrc_path) < 0) {
 581                         WriteAlert(_("LyX Warning!"),
 582                                    _("Error while reading ")+lyxrc_path+".",
 583                                    _("Using built-in defaults."));
 584                         return false;
 585                 }
 586                 return true;
 587         } else
 588                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 589         return false;
 590 }
 591
 592
 593 // Read the ui file `name'
 594 void LyX::ReadUIFile(string const & name)
 595 {
 596         enum Uitags {
 597                 ui_menuset = 1,
 598                 ui_toolbar,
 599                 ui_last
 600         };
 601
 602         struct keyword_item uitags[ui_last-1] = {
 603                 { "menuset", ui_menuset },
 604                 { "toolbar", ui_toolbar }
 605         };
 606
 607         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 608
 609         string ui_path = LibFileSearch("ui", name, "ui");
 610
 611         if (ui_path.empty()) {
 612                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 613                 return;
 614         }
 615
 616         lyxerr[Debug::INIT] << "Found " << name
 617                             << " in " << ui_path << endl;
 618         LyXLex lex(uitags, ui_last - 1);
 619         lex.setFile(ui_path);
 620         if (!lex.IsOK()) {
 621                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 622                        << endl;
 623         }
 624
 625         if (lyxerr.debugging(Debug::PARSER))
 626                 lex.printTable(lyxerr);
 627
 628         while (lex.IsOK()) {
 629                 switch(lex.lex()) {
 630                 case ui_menuset:
 631 #ifdef NEW_MENUBAR
 632                         menubackend.read(lex);
 633                         break;
 634 #else
 635                         // Skip any menu definition and fall over to toolbar.
 636                         // This is a hack, but it is supposed to go away...
 637                         do {
 638                                 lex.next();
 639                                 if (!lex.IsOK()) return;
 640                         }
 641                         while (lex.lex() != ui_toolbar);
 642 #endif
 643
 644                 case ui_toolbar:
 645                         toolbardefaults.read(lex);
 646                         break;
 647
 648                 default:
 649                         lex.printError("LyX::ReadUFile: "
 650                                        "Unknown menu tag: `$$Token'");
 651                         break;
 652                 }
 653         }
 654 }
 655
 656
 657 // Set debugging level and report result to user
 658 void setDebuggingLevel(string const & dbgLevel)
 659 {
 660         lyxerr << _("Setting debug level to ") <<  dbgLevel << endl;
 661         lyxerr.level(Debug::value(dbgLevel));
 662         Debug::showLevel(lyxerr, lyxerr.level());
 663 }
 664
 665
 666 // Give command line help
 667 void commandLineHelp()
 668 {
 669         lyxerr << "LyX " LYX_VERSION << " of " LYX_RELEASE << endl;
 670         lyxerr <<
 671                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 672                   "Command line switches (case sensitive):\n"
 673                   "\t-help              summarize LyX usage\n"
 674                   "\t-userdir dir       try to set user directory to dir\n"
 675                   "\t-sysdir dir        try to set system directory to dir\n"
 676                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 677                   "\t-dbg feature[,feature]...\n"
 678                   "                  select the features to debug.\n"
 679                   "                  Type `lyx -dbg' to see the list of features\n"
 680                   "Check the LyX man page for more options.") << endl;
 681 }
 682
 683 bool LyX::easyParse(int * argc, char * argv[])
 684 {
 685         bool gui = true;
 686         int removeargs = 0; // used when options are read
 687         for(int i = 1; i < *argc; ++i) {
 688                 string arg = argv[i];
 689
 690                 // Check for -dbg int
 691                 if (arg == "-dbg") {
 692                         if (i + 1 < *argc) {
 693                                 setDebuggingLevel(argv[i + 1]);
 694                                 removeargs = 2;
 695                         } else {
 696                                 lyxerr << _("List of supported debug flags:")
 697                                        << endl;
 698                                 Debug::showTags(lyxerr);
 699                                 exit(0);
 700                         }
 701                 }
 702                 // Check for "-sysdir"
 703                 else if (arg == "-sysdir") {
 704                         if (i + 1 < *argc) {
 705                                 system_lyxdir = argv[i + 1];
 706                                 removeargs = 2;
 707                         } else {
 708                                 lyxerr << _("Missing directory for -sysdir switch!")
 709                                        << endl;
 710                                 exit(0);
 711                         }
 712                 }
 713                 // Check for "-userdir"
 714                 else if (arg == "-userdir") {
 715                         if (i + 1 < *argc) {
 716                                 user_lyxdir = argv[i + 1];
 717                                 removeargs = 2;
 718                         } else {
 719                                 lyxerr << _("Missing directory for -userdir switch!")
 720                                        << endl;
 721                                 exit(0);
 722                         }
 723                 }
 724                 // Check for --help or -help
 725                 else if (arg == "--help" || arg == "-help") {
 726                         commandLineHelp();
 727                         exit(0);
 728                 }
 729                 // Check for "-nw": No XWindows as for emacs this should
 730                 // give a LyX that could be used in a terminal window.
 731                 //else if (arg == "-nw") {
 732                 //      gui = false;
 733                 //}
 734
 735                 // Check for "-x": Execute commands
 736                 else if (arg == "-x" || arg == "--execute") {
 737                         if (i + 1 < *argc) {
 738                                 batch_command = string(argv[i + 1]);
 739                                 removeargs = 2;
 740                         }
 741                         else
 742                                 lyxerr << _("Missing command string after  -x switch!") << endl;
 743
 744                         // Argh. Setting gui to false segfaults..
 745                         //gui = false;
 746                 }
 747
 748                 else if (arg == "-e" || arg == "--export") {
 749                         if (i + 1 < *argc) {
 750                                 string type(argv[i+1]);
 751                                 removeargs = 2;
 752
 753                                 if (type == "tex")
 754                                         type = "latex";
 755                                 else if (type == "ps")
 756                                         type = "postscript";
 757                                 else if (type == "text" || type == "txt")
 758                                         type = "ascii";
 759
 760                                 if (type == "latex" || type == "postscript"
 761                                     || type == "linuxdoc" || type == "docbook"
 762                                     || type == "ascii" || type == "html")
 763                                         batch_command = "buffer-export " + type;
 764                                 else
 765                                         lyxerr << _("Unknown file type '")
 766                                                << type << _("' after ")
 767                                                << arg << _(" switch!") << endl;
 768                         } else
 769                                 lyxerr << _("Missing file type [eg latex, "
 770                                             "ps...] after ")
 771                                        << arg << _(" switch!") << endl;
 772                 }
 773                 else if (arg == "--import") {
 774                         if (i + 1 < *argc) {
 775                                 string type(argv[i+1]);
 776                                 string file(argv[i+2]);
 777                                 removeargs = 3;
 778
 779                                 batch_command = "buffer-import " + type + " " + file;
 780                                 lyxerr << "batch_command: "
 781                                        << batch_command << endl;
 782
 783                         } else
 784                                 lyxerr << _("Missing type [eg latex, "
 785                                             "ps...] after ")
 786                                        << arg << _(" switch!") << endl;
 787                 }
 788
 789                 if (removeargs > 0) {
 790                         // Now, remove used arguments by shifting
 791                         // the following ones removeargs places down.
 792                         (*argc) -= removeargs;
 793                         for (int j = i; j < (*argc); ++j)
 794                                 argv[j] = argv[j + removeargs];
 795                         --i; // After shift, check this number again.
 796                         removeargs = 0;
 797                 }
 798
 799         }
 800
 801         return gui;
 802 }
 803
 804
 805 extern "C"
 806 void error_handler(int err_sig)
 807 {
 808         switch (err_sig) {
 809         case SIGHUP:
 810                 lyxerr << "\nlyx: SIGHUP signal caught" << endl;
 811                 break;
 812         case SIGINT:
 813                 // no comments
 814                 break;
 815         case SIGFPE:
 816                 lyxerr << "\nlyx: SIGFPE signal caught" << endl;
 817                 break;
 818         case SIGSEGV:
 819                 lyxerr << "\nlyx: SIGSEGV signal caught" << endl;
 820                 lyxerr <<
 821                         "Sorry, you have found a bug in LyX."
 822                         " If possible, please read 'Known bugs'\n"
 823                         "under the Help menu and then send us "
 824                         "a full bug report. Thanks!" << endl;
 825                 break;
 826         case SIGTERM:
 827                 // no comments
 828                 break;
 829         }
 830
 831         // Deinstall the signal handlers
 832         signal(SIGHUP, SIG_DFL);
 833         signal(SIGINT, SIG_DFL);
 834         signal(SIGFPE, SIG_DFL);
 835         signal(SIGSEGV, SIG_DFL);
 836         signal(SIGTERM, SIG_DFL);
 837
 838         bufferlist.emergencyWriteAll();
 839
 840         lyxerr << "Bye." << endl;
 841         if(err_sig!= SIGHUP &&
 842            (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
 843                 lyx::abort();
 844         exit(0);
 845 }