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 #include "encoding.h"
  42 #include "converter.h"
  43 #include "language.h"
  44 #include "support/os.h"
  45
  46 using std::endl;
  47
  48 #ifndef CXX_GLOBAL_CSTD
  49 using std::signal;
  50 #endif
  51
  52 extern void LoadLyXFile(string const &);
  53 extern void QuitLyX();
  54
  55 string system_lyxdir;
  56 string build_lyxdir;
  57 string system_tempdir;
  58 string user_lyxdir;     // Default $HOME/.lyx
  59
  60 // Should this be kept global? Asger says Yes.
  61 DebugStream lyxerr;
  62
  63 LastFiles * lastfiles;
  64
  65 // This is the global bufferlist object
  66 BufferList bufferlist;
  67
  68 LyXServer * lyxserver = 0;
  69 // this should be static, but I need it in buffer.C
  70 bool finished = false;  // flag, that we are quitting the program
  71
  72 // convenient to have it here.
  73 boost::scoped_ptr<kb_keymap> toplevel_keymap;
  74
  75
  76 LyX::LyX(int * argc, char * argv[])
  77 {
  78         // Prevent crash with --help
  79         lyxGUI = 0;
  80         lastfiles = 0;
  81
  82         // Here we need to parse the command line. At least
  83         // we need to parse for "-dbg" and "-help"
  84         bool gui = easyParse(argc, argv);
  85
  86         // Global bindings (this must be done as early as possible.) (Lgb)
  87         toplevel_keymap.reset(new kb_keymap);
  88         defaultKeyBindings(toplevel_keymap.get());
  89
  90         // Make the GUI object, and let it take care of the
  91         // command line arguments that concerns it.
  92         lyxerr[Debug::INIT] << "Initializing LyXGUI..." << endl;
  93         lyxGUI = new LyXGUI(this, argc, argv, gui);
  94         lyxerr[Debug::INIT] << "Initializing LyXGUI...done" << endl;
  95
  96         // Now the GUI and LyX have taken care of their arguments, so
  97         // the only thing left on the command line should be
  98         // filenames. Let's check anyway.
  99         for (int argi = 1; argi < *argc ; ++argi) {
 100                 if (argv[argi][0] == '-') {
 101                         lyxerr << _("Wrong command line option `")
 102                                << argv[argi]
 103                                << _("'. Exiting.") << endl;
 104                         exit(0);
 105                 }
 106         }
 107
 108         // Initialization of LyX (reads lyxrc and more)
 109         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 110         init(gui);
 111         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 112
 113         lyxGUI->init();
 114
 115         // Load the files specified in the command line.
 116         if ((*argc) == 2)
 117                 lyxerr[Debug::INFO] << "Opening document..." << endl;
 118         else if ((*argc) > 2)
 119                 lyxerr[Debug::INFO] << "Opening documents..." << endl;
 120
 121         Buffer * last_loaded = 0;
 122
 123         for (int argi = (*argc) - 1; argi >= 1; --argi) {
 124                 Buffer * loadb = bufferlist.loadLyXFile(argv[argi]);
 125                 if (loadb != 0) {
 126                         last_loaded = loadb;
 127                 }
 128         }
 129
 130         if (first_start) {
 131                 string splash = i18nLibFileSearch("examples", "splash.lyx");
 132                 lyxerr[Debug::INIT] << "Opening splash document "
 133                                << splash << "..." << endl;
 134                 Buffer * loadb = bufferlist.loadLyXFile(splash);
 135                 if (loadb != 0) {
 136                         last_loaded = loadb;
 137                 }
 138         }
 139
 140         if (last_loaded != 0) {
 141                 lyxerr[Debug::INIT] << "Yes we loaded some files." << endl;
 142                 if (lyxrc.use_gui)
 143                         lyxGUI->regBuf(last_loaded);
 144         }
 145
 146         // Execute batch commands if available
 147         if (!batch_command.empty()) {
 148                 lyxerr << "About to handle -x '"
 149                        << batch_command << "'" << endl;
 150
 151                 // no buffer loaded, create one
 152                 if (!last_loaded)
 153                         last_loaded = bufferlist.newFile("tmpfile", string());
 154
 155                 // try to dispatch to last loaded buffer first
 156                 bool dispatched = last_loaded->Dispatch(batch_command);
 157
 158                 // if this was successful, return.
 159                 // Maybe we could do something more clever than aborting...
 160                 if (dispatched) {
 161                         lyxerr << "We are done!" << endl;
 162                         QuitLyX();
 163                         return;
 164                 }
 165
 166                 // otherwise, let the GUI handle the batch command
 167                 lyxGUI->regBuf(last_loaded);
 168                 lyxGUI->getLyXView()->getLyXFunc()->Dispatch(batch_command);
 169
 170                 // fall through...
 171         }
 172
 173         // Let the ball begin...
 174         lyxGUI->runTime();
 175 }
 176
 177
 178 // A destructor is always necessary  (asierra-970604)
 179 LyX::~LyX()
 180 {
 181         delete lastfiles;
 182         delete lyxGUI;
 183 }
 184
 185
 186 extern "C" void error_handler(int err_sig);
 187
 188 void LyX::init(bool gui)
 189 {
 190         // Install the signal handlers
 191         signal(SIGHUP, error_handler);
 192         signal(SIGFPE, error_handler);
 193         signal(SIGSEGV, error_handler);
 194         signal(SIGINT, error_handler);
 195         signal(SIGTERM, error_handler);
 196
 197         //
 198         // Determine path of binary
 199         //
 200
 201         string fullbinpath;
 202         string binpath = os::binpath();
 203         string binname = os::binname();
 204         fullbinpath = binpath;
 205
 206         if (binpath.empty()) {
 207                 lyxerr << _("Warning: could not determine path of binary.")
 208                        << "\n"
 209                        << _("If you have problems, try starting LyX with an absolute path.")
 210                        << endl;
 211         }
 212         lyxerr[Debug::INIT] << "Path of binary: " << binpath << endl;
 213
 214         //
 215         // Determine system directory.
 216         //
 217
 218         // Directories are searched in this order:
 219         // 1) -sysdir command line parameter
 220         // 2) LYX_DIR_11x environment variable
 221         // 3) Maybe <path of binary>/TOP_SRCDIR/lib
 222         // 4) <path of binary>/../share/<name of binary>/
 223         // 4a) repeat 4 after following the Symlink if <path of
 224         //     binary> is a symbolic link.
 225         // 5) hardcoded lyx_dir
 226         // The directory is checked for the presence of the file
 227         // "chkconfig.ltx", and if that is present, the directory
 228         // is accepted as the system directory.
 229         // If no chkconfig.ltx file is found, a warning is given,
 230         // and the hardcoded lyx_dir is used.
 231
 232         // If we had a command line switch, system_lyxdir is already set
 233         string searchpath;
 234         if (!system_lyxdir.empty())
 235                 searchpath= MakeAbsPath(system_lyxdir) + ';';
 236
 237         // LYX_DIR_11x environment variable
 238         string lyxdir = GetEnvPath("LYX_DIR_11x");
 239
 240         if (!lyxdir.empty()) {
 241                 lyxerr[Debug::INIT] << "LYX_DIR_11x: " << lyxdir << endl;
 242                 searchpath += lyxdir + ';';
 243         }
 244
 245         // <path of binary>/TOP_SRCDIR/lib
 246         build_lyxdir = MakeAbsPath("../lib", binpath);
 247         if (!FileSearch(build_lyxdir, "lyxrc.defaults").empty()) {
 248                 searchpath += MakeAbsPath(AddPath(TOP_SRCDIR, "lib"),
 249                                           binpath) + ';';
 250                 lyxerr[Debug::INIT] << "Checking whether LyX is run in "
 251                         "place... yes" << endl;
 252         } else {
 253                 lyxerr[Debug::INIT]
 254                         << "Checking whether LyX is run in place... no"
 255                         << endl;
 256                 build_lyxdir.erase();
 257         }
 258
 259         bool FollowLink;
 260         do {
 261           // Path of binary/../share/name of binary/
 262                 searchpath += NormalizePath(AddPath(binpath, "../share/") +
 263                       OnlyFilename(binname)) + ';';
 264
 265           // Follow Symlinks
 266                 FileInfo file(fullbinpath, true);
 267                 FollowLink = file.isLink();
 268                 if (FollowLink) {
 269                         string Link;
 270                         if (LyXReadLink(fullbinpath, Link)) {
 271                                 fullbinpath = Link;
 272                                 binpath = MakeAbsPath(OnlyPath(fullbinpath));
 273                         }
 274                         else {
 275                                 FollowLink = false;
 276                         }
 277                 }
 278         } while (FollowLink);
 279
 280         // Hardcoded dir
 281         searchpath += LYX_DIR;
 282
 283         // If debugging, show complete search path
 284         lyxerr[Debug::INIT] << "System directory search path: "
 285                             << searchpath << endl;
 286
 287         string const filename = "chkconfig.ltx";
 288         string temp = FileOpenSearch(searchpath, filename, string());
 289         system_lyxdir = OnlyPath(temp);
 290
 291         // Reduce "path/../path" stuff out of system directory
 292         system_lyxdir = NormalizePath(system_lyxdir);
 293
 294         bool path_shown = false;
 295
 296         // Warn if environment variable is set, but unusable
 297         if (!lyxdir.empty()) {
 298                 if (system_lyxdir != NormalizePath(lyxdir)) {
 299                         lyxerr <<_("LYX_DIR_11x environment variable no good.")
 300                                << '\n'
 301                                << _("System directory set to: ")
 302                                << system_lyxdir << endl;
 303                         path_shown = true;
 304                 }
 305         }
 306
 307         // Warn the user if we couldn't find "chkconfig.ltx"
 308         if (system_lyxdir == "./") {
 309                 lyxerr <<_("LyX Warning! Couldn't determine system directory. ")
 310                        <<_("Try the '-sysdir' command line parameter or ")
 311                        <<_("set the environment variable LYX_DIR_11x to the "
 312                            "LyX system directory ")
 313                        << _("containing the file `chkconfig.ltx'.") << endl;
 314                 if (!path_shown)
 315                         lyxerr << _("Using built-in default ")
 316                                << LYX_DIR << _(" but expect problems.")
 317                                << endl;
 318                 else
 319                         lyxerr << _("Expect problems.") << endl;
 320                 system_lyxdir = LYX_DIR;
 321                 path_shown = true;
 322         }
 323
 324         // Report the system directory if debugging is on
 325         if (!path_shown)
 326                 lyxerr[Debug::INIT] << "System directory: '"
 327                                     << system_lyxdir << '\'' << endl;
 328
 329         //
 330         // Determine user lyx-dir
 331         //
 332
 333         // Directories are searched in this order:
 334         // 1) -userdir command line parameter
 335         // 2) LYX_USERDIR_11x environment variable
 336         // 3) $HOME/.<name of binary>
 337
 338         // If we had a command line switch, user_lyxdir is already set
 339         bool explicit_userdir = true;
 340         if (user_lyxdir.empty()) {
 341
 342                 // LYX_USERDIR_11x environment variable
 343                 user_lyxdir = GetEnvPath("LYX_USERDIR_11x");
 344
 345                 // default behaviour
 346                 if (user_lyxdir.empty())
 347                         user_lyxdir = AddPath(GetEnvPath("HOME"),
 348                                                         string(".") + PACKAGE);
 349                         explicit_userdir = false;
 350         }
 351
 352         lyxerr[Debug::INIT] << "User LyX directory: '"
 353                             <<  user_lyxdir << '\'' << endl;
 354
 355         // Check that user LyX directory is ok. We don't do that if
 356         // running in batch mode.
 357         if (gui)
 358                 queryUserLyXDir(explicit_userdir);
 359         else
 360                 first_start = false;
 361
 362         //
 363         // Shine up lyxrc defaults
 364         //
 365
 366         // Default template path: system_dir/templates
 367         if (lyxrc.template_path.empty()){
 368                 lyxrc.template_path = AddPath(system_lyxdir, "templates");
 369         }
 370
 371         // Default lastfiles file: $HOME/.lyx/lastfiles
 372         if (lyxrc.lastfiles.empty()){
 373                 lyxrc.lastfiles = AddName(user_lyxdir, "lastfiles");
 374         }
 375
 376         // Disable gui when either lyxrc or easyparse says so
 377         if (!gui)
 378                 lyxrc.use_gui = false;
 379
 380         // Calculate screen dpi as average of x-DPI and y-DPI:
 381         if (lyxrc.use_gui) {
 382                 lyxrc.dpi = getScreenDPI();
 383                 lyxerr[Debug::INIT] << "DPI setting detected to be "
 384                                                 << lyxrc.dpi + 0.5 << endl;
 385         } else {
 386                 lyxrc.dpi = 1; // I hope this is safe
 387         }
 388
 389         //
 390         // Read configuration files
 391         //
 392
 393         ReadRcFile("lyxrc.defaults");
 394         system_lyxrc = lyxrc;
 395         system_formats = formats;
 396         system_converters = converters;
 397         system_lcolor = lcolor;
 398
 399         // If there is a preferences file we read that instead
 400         // of the old lyxrc file.
 401         if (!ReadRcFile("preferences"))
 402             ReadRcFile("lyxrc");
 403
 404         // Read encodings
 405         ReadEncodingsFile("encodings");
 406         // Read languages
 407         ReadLanguagesFile("languages");
 408
 409         // Load the layouts
 410         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 411         LyXSetStyle();
 412
 413         // Ensure that we have really read a bind file, so that LyX is
 414         // usable.
 415         lyxrc.readBindFileIfNeeded();
 416
 417         // Read menus
 418         ReadUIFile(lyxrc.ui_file);
 419
 420         // Bind the X dead keys to the corresponding LyX functions if
 421         // necessary.
 422         if (lyxrc.override_x_deadkeys)
 423                 deadKeyBindings(toplevel_keymap.get());
 424
 425         if (lyxerr.debugging(Debug::LYXRC)) {
 426                 lyxrc.print();
 427         }
 428
 429         // Create temp directory
 430         os::setTmpDir(CreateLyXTmpDir(lyxrc.tempdir_path));
 431         system_tempdir = os::getTmpDir();
 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
 450 // These are the default bindings known to LyX
 451 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 452 {
 453         kbmap->bind("Right", LFUN_RIGHT);
 454         kbmap->bind("Left", LFUN_LEFT);
 455         kbmap->bind("Up", LFUN_UP);
 456         kbmap->bind("Down", LFUN_DOWN);
 457
 458         kbmap->bind("Tab", LFUN_TAB);
 459         kbmap->bind("ISO_Left_Tab", LFUN_TAB); // jbl 2001-23-02
 460
 461         kbmap->bind("Home", LFUN_HOME);
 462         kbmap->bind("End", LFUN_END);
 463         kbmap->bind("Prior", LFUN_PRIOR);
 464         kbmap->bind("Next", LFUN_NEXT);
 465
 466         kbmap->bind("Return", LFUN_BREAKPARAGRAPH);
 467         kbmap->bind("~C-~S-~M-nobreakspace", LFUN_PROTECTEDSPACE);
 468
 469         kbmap->bind("Delete", LFUN_DELETE);
 470         kbmap->bind("BackSpace", LFUN_BACKSPACE);
 471
 472         // kbmap->bindings to enable the use of the numeric keypad
 473         // e.g. Num Lock set
 474         kbmap->bind("KP_0", LFUN_SELFINSERT);
 475         kbmap->bind("KP_Decimal", LFUN_SELFINSERT);
 476         kbmap->bind("KP_Enter", LFUN_SELFINSERT);
 477         kbmap->bind("KP_1", LFUN_SELFINSERT);
 478         kbmap->bind("KP_2", LFUN_SELFINSERT);
 479         kbmap->bind("KP_3", LFUN_SELFINSERT);
 480         kbmap->bind("KP_4", LFUN_SELFINSERT);
 481         kbmap->bind("KP_5", LFUN_SELFINSERT);
 482         kbmap->bind("KP_6", LFUN_SELFINSERT);
 483         kbmap->bind("KP_Add", LFUN_SELFINSERT);
 484         kbmap->bind("KP_7", LFUN_SELFINSERT);
 485         kbmap->bind("KP_8", LFUN_SELFINSERT);
 486         kbmap->bind("KP_9", LFUN_SELFINSERT);
 487         kbmap->bind("KP_Divide", LFUN_SELFINSERT);
 488         kbmap->bind("KP_Multiply", LFUN_SELFINSERT);
 489         kbmap->bind("KP_Subtract", LFUN_SELFINSERT);
 490
 491         /* Most self-insert keys are handled in the 'default:' section of
 492          * WorkAreaKeyPress - so we don't have to define them all.
 493          * However keys explicit decleared as self-insert are
 494          * handled seperatly (LFUN_SELFINSERT.) Lgb. */
 495
 496         kbmap->bind("C-Tab", LFUN_TABINSERT);  // ale970515
 497         kbmap->bind("S-Tab", LFUN_SHIFT_TAB);  // jug20000522
 498         kbmap->bind("S-ISO_Left_Tab", LFUN_SHIFT_TAB); // jbl 2001-23-02
 499 }
 500
 501
 502 // LyX can optionally take over the handling of deadkeys
 503 void LyX::deadKeyBindings(kb_keymap * kbmap)
 504 {
 505         // bindKeyings for transparent handling of deadkeys
 506         // The keysyms are gotten from XFree86 X11R6
 507         kbmap->bind("~C-~S-~M-dead_acute", LFUN_ACUTE);
 508         kbmap->bind("~C-~S-~M-dead_breve", LFUN_BREVE);
 509         kbmap->bind("~C-~S-~M-dead_caron", LFUN_CARON);
 510         kbmap->bind("~C-~S-~M-dead_cedilla", LFUN_CEDILLA);
 511         kbmap->bind("~C-~S-~M-dead_abovering", LFUN_CIRCLE);
 512         kbmap->bind("~C-~S-~M-dead_circumflex", LFUN_CIRCUMFLEX);
 513         kbmap->bind("~C-~S-~M-dead_abovedot", LFUN_DOT);
 514         kbmap->bind("~C-~S-~M-dead_grave", LFUN_GRAVE);
 515         kbmap->bind("~C-~S-~M-dead_doubleacute", LFUN_HUNG_UMLAUT);
 516         kbmap->bind("~C-~S-~M-dead_macron", LFUN_MACRON);
 517         // nothing with this name
 518         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 519         kbmap->bind("~C-~S-~M-dead_tilde", LFUN_TILDE);
 520         kbmap->bind("~C-~S-~M-dead_diaeresis", LFUN_UMLAUT);
 521         // nothing with this name either...
 522         //kbmap->bind("~C-~S-~M-dead_underbar", LFUN_UNDERBAR);
 523         kbmap->bind("~C-~S-~M-dead_belowdot", LFUN_UNDERDOT);
 524         kbmap->bind("~C-~S-~M-dead_tie", LFUN_TIE);
 525         kbmap->bind("~C-~S-~M-dead_ogonek", LFUN_OGONEK);
 526 }
 527
 528
 529 // This one is not allowed to use anything on the main form, since that
 530 // one does not exist yet. (Asger)
 531 void LyX::queryUserLyXDir(bool explicit_userdir)
 532 {
 533         // Does user directory exist?
 534         FileInfo fileInfo(user_lyxdir);
 535         if (fileInfo.isOK() && fileInfo.isDir()) {
 536                 first_start = false;
 537                 return;
 538         } else {
 539                 first_start = true;
 540         }
 541
 542         // Nope
 543         // Different wording if the user specifically requested a directory
 544         if (!AskQuestion( explicit_userdir
 545                          ? _("You have specified an invalid LyX directory.")
 546                          : _("You don't have a personal LyX directory.") ,
 547
 548                          _("It is needed to keep your own configuration."),
 549                          _("Should I try to set it up for you (recommended)?"))) {
 550                 lyxerr << _("Running without personal LyX directory.") << endl;
 551                 // No, let's use $HOME instead.
 552                 user_lyxdir = GetEnvPath("HOME");
 553                 return;
 554         }
 555
 556         // Tell the user what is going on
 557         lyxerr << _("LyX: Creating directory ") << user_lyxdir
 558                << _(" and running configure...") << endl;
 559
 560         // Create directory structure
 561         if (!createDirectory(user_lyxdir, 0755)) {
 562                 // Failed, let's use $HOME instead.
 563                 user_lyxdir = GetEnvPath("HOME");
 564                 lyxerr << _("Failed. Will use ") << user_lyxdir
 565                        << _(" instead.") << endl;
 566                 return;
 567         }
 568
 569         // Run configure in user lyx directory
 570         Path p(user_lyxdir);
 571         ::system(AddName(system_lyxdir, "configure").c_str());
 572         lyxerr << "LyX: " << _("Done!") << endl;
 573 }
 574
 575
 576 // Read the rc file `name'
 577 bool LyX::ReadRcFile(string const & name)
 578 {
 579         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 580
 581         string lyxrc_path = LibFileSearch(string(), name);
 582         if (!lyxrc_path.empty()){
 583                 lyxerr[Debug::INIT] << "Found " << name
 584                                     << " in " << lyxrc_path << endl;
 585                 if (lyxrc.read(lyxrc_path) < 0) {
 586                         WriteAlert(_("LyX Warning!"),
 587                                    _("Error while reading ")+lyxrc_path+".",
 588                                    _("Using built-in defaults."));
 589                         return false;
 590                 }
 591                 return true;
 592         } else
 593                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 594         return false;
 595 }
 596
 597
 598 // Read the ui file `name'
 599 void LyX::ReadUIFile(string const & name)
 600 {
 601         enum Uitags {
 602                 ui_menuset = 1,
 603                 ui_toolbar,
 604                 ui_last
 605         };
 606
 607         struct keyword_item uitags[ui_last-1] = {
 608                 { "menuset", ui_menuset },
 609                 { "toolbar", ui_toolbar }
 610         };
 611
 612         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 613
 614         string ui_path = LibFileSearch("ui", name, "ui");
 615
 616         if (ui_path.empty()) {
 617                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 618                 menubackend.defaults();
 619                 return;
 620         }
 621
 622         lyxerr[Debug::INIT] << "Found " << name
 623                             << " in " << ui_path << endl;
 624         LyXLex lex(uitags, ui_last - 1);
 625         lex.setFile(ui_path);
 626         if (!lex.IsOK()) {
 627                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 628                        << endl;
 629         }
 630
 631         if (lyxerr.debugging(Debug::PARSER))
 632                 lex.printTable(lyxerr);
 633
 634         while (lex.IsOK()) {
 635                 switch (lex.lex()) {
 636                 case ui_menuset:
 637                         menubackend.read(lex);
 638                         break;
 639
 640                 case ui_toolbar:
 641                         toolbardefaults.read(lex);
 642                         break;
 643
 644                 default:
 645                         if(!strip(lex.GetString()).empty())
 646                                 lex.printError("LyX::ReadUIFile: "
 647                                                "Unknown menu tag: `$$Token'");
 648                         break;
 649                 }
 650         }
 651 }
 652
 653
 654 // Read the languages file `name'
 655 void LyX::ReadLanguagesFile(string const & name)
 656 {
 657         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 658
 659         string lang_path = LibFileSearch(string(), name);
 660         if (lang_path.empty()) {
 661                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 662                 languages.setDefaults();
 663                 return;
 664         }
 665         languages.read(lang_path);
 666 }
 667
 668
 669 // Read the encodings file `name'
 670 void LyX::ReadEncodingsFile(string const & name)
 671 {
 672         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 673
 674         string enc_path = LibFileSearch(string(), name);
 675         if (enc_path.empty()) {
 676                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 677                 return;
 678         }
 679         encodings.read(enc_path);
 680 }
 681
 682
 683 namespace {
 684
 685 // Set debugging level and report result to user
 686 void setDebuggingLevel(string const & dbgLevel)
 687 {
 688         lyxerr << _("Setting debug level to ") <<  dbgLevel << endl;
 689         lyxerr.level(Debug::value(dbgLevel));
 690         Debug::showLevel(lyxerr, lyxerr.level());
 691 }
 692
 693
 694 // Give command line help
 695 void commandLineHelp()
 696 {
 697         lyxerr << "LyX " LYX_VERSION << " of " LYX_RELEASE << endl;
 698         lyxerr <<
 699                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 700                   "Command line switches (case sensitive):\n"
 701                   "\t-help              summarize LyX usage\n"
 702                   "\t-userdir dir       try to set user directory to dir\n"
 703                   "\t-sysdir dir        try to set system directory to dir\n"
 704                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 705                   "\t-dbg feature[,feature]...\n"
 706                   "                  select the features to debug.\n"
 707                   "                  Type `lyx -dbg' to see the list of features\n"
 708                   "\t-x [--execute] command\n"
 709                   "                  where command is a lyx command.\n"
 710                   "\t-e [--export] fmt\n"
 711                   "                  where fmt is the export format of choice.\n"
 712                   "\t-i [--import] fmt file.xxx\n"
 713                   "                  where fmt is the import format of choice\n"
 714                   "                  and file.xxx is the file to be imported.\n"
 715                   "Check the LyX man page for more details.") << endl;
 716 }
 717
 718 } // namespace anon
 719
 720
 721 bool LyX::easyParse(int * argc, char * argv[])
 722 {
 723         bool gui = true;
 724         int removeargs = 0; // used when options are read
 725         for (int i = 1; i < *argc; ++i) {
 726                 string arg = argv[i];
 727
 728                 // Check for -dbg int
 729                 if (arg == "-dbg") {
 730                         if (i + 1 < *argc) {
 731                                 setDebuggingLevel(argv[i + 1]);
 732                                 removeargs = 2;
 733                         } else {
 734                                 lyxerr << _("List of supported debug flags:")
 735                                        << endl;
 736                                 Debug::showTags(lyxerr);
 737                                 exit(0);
 738                         }
 739                 }
 740                 // Check for "-sysdir"
 741                 else if (arg == "-sysdir") {
 742                         if (i + 1 < *argc) {
 743                                 system_lyxdir = argv[i + 1];
 744                                 removeargs = 2;
 745                         } else {
 746                                 lyxerr << _("Missing directory for -sysdir switch!")
 747                                        << endl;
 748                                 exit(0);
 749                         }
 750                 }
 751                 // Check for "-userdir"
 752                 else if (arg == "-userdir") {
 753                         if (i + 1 < *argc) {
 754                                 user_lyxdir = argv[i + 1];
 755                                 removeargs = 2;
 756                         } else {
 757                                 lyxerr << _("Missing directory for -userdir switch!")
 758                                        << endl;
 759                                 exit(0);
 760                         }
 761                 }
 762                 // Check for --help or -help
 763                 else if (arg == "--help" || arg == "-help") {
 764                         commandLineHelp();
 765                         exit(0);
 766                 }
 767                 // Check for "-nw": No XWindows as for emacs this should
 768                 // give a LyX that could be used in a terminal window.
 769                 //else if (arg == "-nw") {
 770                 //      gui = false;
 771                 //}
 772
 773                 // Check for "-x": Execute commands
 774                 else if (arg == "-x" || arg == "--execute") {
 775                         if (i + 1 < *argc) {
 776                                 batch_command = string(argv[i + 1]);
 777                                 removeargs = 2;
 778                         }
 779                         else
 780                                 lyxerr << _("Missing command string after  -x switch!") << endl;
 781
 782                         // Argh. Setting gui to false segfaults..
 783                         //gui = false;
 784                 }
 785
 786                 else if (arg == "-e" || arg == "--export") {
 787                         if (i + 1 < *argc) {
 788                                 string type(argv[i+1]);
 789                                 removeargs = 2;
 790                                 batch_command = "buffer-export " + type;
 791                                 gui = false;
 792                         } else
 793                                 lyxerr << _("Missing file type [eg latex, "
 794                                             "ps...] after ")
 795                                        << arg << _(" switch!") << endl;
 796                 }
 797                 else if (arg == "-i" || arg == "--import") {
 798                         if (i + 1 < *argc) {
 799                                 string type(argv[i+1]);
 800                                 string file(argv[i+2]);
 801                                 removeargs = 3;
 802
 803                                 batch_command = "buffer-import " + type + " " + file;
 804                                 lyxerr << "batch_command: "
 805                                        << batch_command << endl;
 806
 807                         } else
 808                                 lyxerr << _("Missing type [eg latex, "
 809                                             "ps...] after ")
 810                                        << arg << _(" switch!") << endl;
 811                 }
 812
 813                 if (removeargs > 0) {
 814                         // Now, remove used arguments by shifting
 815                         // the following ones removeargs places down.
 816                         (*argc) -= removeargs;
 817                         for (int j = i; j < (*argc); ++j)
 818                                 argv[j] = argv[j + removeargs];
 819                         --i; // After shift, check this number again.
 820                         removeargs = 0;
 821                 }
 822
 823         }
 824
 825         return gui;
 826 }
 827
 828
 829 extern "C"
 830 void error_handler(int err_sig)
 831 {
 832         switch (err_sig) {
 833         case SIGHUP:
 834                 lyxerr << "\nlyx: SIGHUP signal caught" << endl;
 835                 break;
 836         case SIGINT:
 837                 // no comments
 838                 break;
 839         case SIGFPE:
 840                 lyxerr << "\nlyx: SIGFPE signal caught" << endl;
 841                 break;
 842         case SIGSEGV:
 843                 lyxerr << "\nlyx: SIGSEGV signal caught" << endl;
 844                 lyxerr <<
 845                         "Sorry, you have found a bug in LyX."
 846                         " If possible, please read 'Known bugs'\n"
 847                         "under the Help menu and then send us "
 848                         "a full bug report. Thanks!" << endl;
 849                 break;
 850         case SIGTERM:
 851                 // no comments
 852                 break;
 853         }
 854
 855         // Deinstall the signal handlers
 856         signal(SIGHUP, SIG_DFL);
 857         signal(SIGINT, SIG_DFL);
 858         signal(SIGFPE, SIG_DFL);
 859         signal(SIGSEGV, SIG_DFL);
 860         signal(SIGTERM, SIG_DFL);
 861
 862         bufferlist.emergencyWriteAll();
 863
 864         lyxerr << "Bye." << endl;
 865         if (err_sig!= SIGHUP &&
 866            (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
 867                 lyx::abort();
 868         exit(0);
 869 }