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 1995-2001 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 "buffer.h"
  30 #include "bufferlist.h"
  31 #include "debug.h"
  32 #include "support/FileInfo.h"
  33 #include "lastfiles.h"
  34 #include "intl.h"
  35 #include "lyxserver.h"
  36 #include "layout.h"
  37 #include "gettext.h"
  38 #include "kbmap.h"
  39 #include "MenuBackend.h"
  40 #include "ToolbarDefaults.h"
  41 #include "lyxlex.h"
  42 #include "encoding.h"
  43 #include "converter.h"
  44 #include "language.h"
  45 #include "support/os.h"
  46
  47 using std::endl;
  48
  49 #ifndef CXX_GLOBAL_CSTD
  50 using std::signal;
  51 #endif
  52
  53 extern void LoadLyXFile(string const &);
  54 extern void QuitLyX();
  55
  56 string system_lyxdir;
  57 string build_lyxdir;
  58 string system_tempdir;
  59 string user_lyxdir;     // Default $HOME/.lyx
  60
  61 // Should this be kept global? Asger says Yes.
  62 DebugStream lyxerr;
  63
  64 LastFiles * lastfiles;
  65
  66 // This is the global bufferlist object
  67 BufferList bufferlist;
  68
  69 LyXServer * lyxserver = 0;
  70 // this should be static, but I need it in buffer.C
  71 bool finished = false;  // flag, that we are quitting the program
  72
  73 // convenient to have it here.
  74 boost::scoped_ptr<kb_keymap> toplevel_keymap;
  75
  76
  77 LyX::LyX(int * argc, char * argv[])
  78 {
  79         // Prevent crash with --help
  80         lyxGUI = 0;
  81         lastfiles = 0;
  82
  83         // Here we need to parse the command line. At least
  84         // we need to parse for "-dbg" and "-help"
  85         bool gui = easyParse(argc, argv);
  86
  87         // Global bindings (this must be done as early as possible.) (Lgb)
  88         toplevel_keymap.reset(new kb_keymap);
  89         defaultKeyBindings(toplevel_keymap.get());
  90
  91         // Make the GUI object, and let it take care of the
  92         // command line arguments that concerns it.
  93         lyxerr[Debug::INIT] << "Initializing LyXGUI..." << endl;
  94         lyxGUI = new LyXGUI(this, argc, argv, gui);
  95         lyxerr[Debug::INIT] << "Initializing LyXGUI...done" << endl;
  96
  97         // Now the GUI and LyX have taken care of their arguments, so
  98         // the only thing left on the command line should be
  99         // filenames. Let's check anyway.
 100         for (int argi = 1; argi < *argc ; ++argi) {
 101                 if (argv[argi][0] == '-') {
 102                         lyxerr << _("Wrong command line option `")
 103                                << argv[argi]
 104                                << _("'. Exiting.") << endl;
 105                         exit(0);
 106                 }
 107         }
 108
 109         // Initialization of LyX (reads lyxrc and more)
 110         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 111         init(gui);
 112         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 113
 114         lyxGUI->init();
 115
 116         // Load the files specified in the command line.
 117         if ((*argc) == 2)
 118                 lyxerr[Debug::INFO] << "Opening document..." << endl;
 119         else if ((*argc) > 2)
 120                 lyxerr[Debug::INFO] << "Opening documents..." << endl;
 121
 122         Buffer * last_loaded = 0;
 123
 124         for (int argi = (*argc) - 1; argi >= 1; --argi) {
 125                 Buffer * loadb = bufferlist.loadLyXFile(argv[argi]);
 126                 if (loadb != 0) {
 127                         last_loaded = loadb;
 128                 }
 129         }
 130
 131         if (first_start) {
 132                 string const splash =
 133                         i18nLibFileSearch("examples", "splash.lyx");
 134                 lyxerr[Debug::INIT] << "Opening splash document "
 135                                << splash << "..." << endl;
 136                 Buffer * loadb = bufferlist.loadLyXFile(splash);
 137                 if (loadb != 0) {
 138                         last_loaded = loadb;
 139                 }
 140         }
 141
 142         if (last_loaded != 0) {
 143                 lyxerr[Debug::INIT] << "Yes we loaded some files." << endl;
 144                 if (lyxrc.use_gui)
 145                         lyxGUI->regBuf(last_loaded);
 146         }
 147
 148         // Execute batch commands if available
 149         if (!batch_command.empty()) {
 150                 lyxerr << "About to handle -x '"
 151                        << batch_command << "'" << endl;
 152
 153                 // no buffer loaded, create one
 154                 if (!last_loaded)
 155                         last_loaded = bufferlist.newFile("tmpfile", string());
 156
 157                 // try to dispatch to last loaded buffer first
 158                 bool dispatched = last_loaded->dispatch(batch_command);
 159
 160                 // if this was successful, return.
 161                 // Maybe we could do something more clever than aborting...
 162                 if (dispatched) {
 163                         lyxerr << "We are done!" << endl;
 164                         QuitLyX();
 165                         return;
 166                 }
 167
 168                 // otherwise, let the GUI handle the batch command
 169                 lyxGUI->regBuf(last_loaded);
 170                 lyxGUI->getLyXView()->getLyXFunc()->dispatch(batch_command);
 171
 172                 // fall through...
 173         }
 174
 175         // Let the ball begin...
 176         lyxGUI->runTime();
 177 }
 178
 179
 180 // A destructor is always necessary  (asierra-970604)
 181 LyX::~LyX()
 182 {
 183         delete lastfiles;
 184         delete lyxGUI;
 185 }
 186
 187
 188 extern "C" void error_handler(int err_sig);
 189
 190 void LyX::init(bool gui)
 191 {
 192         // Install the signal handlers
 193         signal(SIGHUP, error_handler);
 194         signal(SIGFPE, error_handler);
 195         signal(SIGSEGV, error_handler);
 196         signal(SIGINT, error_handler);
 197         signal(SIGTERM, error_handler);
 198
 199         //
 200         // Determine path of binary
 201         //
 202
 203         string fullbinpath;
 204         string binpath = os::binpath();
 205         string binname = os::binname();
 206         fullbinpath = binpath;
 207
 208         if (binpath.empty()) {
 209                 lyxerr << _("Warning: could not determine path of binary.")
 210                        << "\n"
 211                        << _("If you have problems, try starting LyX with an absolute path.")
 212                        << endl;
 213         }
 214         lyxerr[Debug::INIT] << "Path of binary: " << binpath << endl;
 215
 216         //
 217         // Determine system directory.
 218         //
 219
 220         // Directories are searched in this order:
 221         // 1) -sysdir command line parameter
 222         // 2) LYX_DIR_11x environment variable
 223         // 3) Maybe <path of binary>/TOP_SRCDIR/lib
 224         // 4) <path of binary>/../share/<name of binary>/
 225         // 4a) repeat 4 after following the Symlink if <path of
 226         //     binary> is a symbolic link.
 227         // 5) hardcoded lyx_dir
 228         // The directory is checked for the presence of the file
 229         // "chkconfig.ltx", and if that is present, the directory
 230         // is accepted as the system directory.
 231         // If no chkconfig.ltx file is found, a warning is given,
 232         // and the hardcoded lyx_dir is used.
 233
 234         // If we had a command line switch, system_lyxdir is already set
 235         string searchpath;
 236         if (!system_lyxdir.empty())
 237                 searchpath= MakeAbsPath(system_lyxdir) + ';';
 238
 239         // LYX_DIR_11x environment variable
 240         string const lyxdir = GetEnvPath("LYX_DIR_11x");
 241
 242         if (!lyxdir.empty()) {
 243                 lyxerr[Debug::INIT] << "LYX_DIR_11x: " << lyxdir << endl;
 244                 searchpath += lyxdir + ';';
 245         }
 246
 247         // <path of binary>/TOP_SRCDIR/lib
 248         build_lyxdir = MakeAbsPath("../lib", binpath);
 249         if (!FileSearch(build_lyxdir, "lyxrc.defaults").empty()) {
 250                 searchpath += MakeAbsPath(AddPath(TOP_SRCDIR, "lib"),
 251                                           binpath) + ';';
 252                 lyxerr[Debug::INIT] << "Checking whether LyX is run in "
 253                         "place... yes" << endl;
 254         } else {
 255                 lyxerr[Debug::INIT]
 256                         << "Checking whether LyX is run in place... no"
 257                         << endl;
 258                 build_lyxdir.erase();
 259         }
 260
 261         bool followlink;
 262         do {
 263           // Path of binary/../share/name of binary/
 264                 searchpath += NormalizePath(AddPath(binpath, "../share/") +
 265                       OnlyFilename(binname)) + ';';
 266
 267           // Follow Symlinks
 268                 FileInfo file(fullbinpath, true);
 269                 followlink = file.isLink();
 270                 if (followlink) {
 271                         string link;
 272                         if (LyXReadLink(fullbinpath, link)) {
 273                                 fullbinpath = link;
 274                                 binpath = MakeAbsPath(OnlyPath(fullbinpath));
 275                         }
 276                         else {
 277                                 followlink = false;
 278                         }
 279                 }
 280         } while (followlink);
 281
 282         // Hardcoded dir
 283         searchpath += LYX_DIR;
 284
 285         // If debugging, show complete search path
 286         lyxerr[Debug::INIT] << "System directory search path: "
 287                             << searchpath << endl;
 288
 289         string const filename = "chkconfig.ltx";
 290         string const temp = FileOpenSearch(searchpath, filename, string());
 291         system_lyxdir = OnlyPath(temp);
 292
 293         // Reduce "path/../path" stuff out of system directory
 294         system_lyxdir = NormalizePath(system_lyxdir);
 295
 296         bool path_shown = false;
 297
 298         // Warn if environment variable is set, but unusable
 299         if (!lyxdir.empty()) {
 300                 if (system_lyxdir != NormalizePath(lyxdir)) {
 301                         lyxerr <<_("LYX_DIR_11x environment variable no good.")
 302                                << '\n'
 303                                << _("System directory set to: ")
 304                                << system_lyxdir << endl;
 305                         path_shown = true;
 306                 }
 307         }
 308
 309         // Warn the user if we couldn't find "chkconfig.ltx"
 310         if (system_lyxdir == "./") {
 311                 lyxerr <<_("LyX Warning! Couldn't determine system directory. ")
 312                        <<_("Try the '-sysdir' command line parameter or ")
 313                        <<_("set the environment variable LYX_DIR_11x to the "
 314                            "LyX system directory ")
 315                        << _("containing the file `chkconfig.ltx'.") << endl;
 316                 if (!path_shown) {
 317                         FileInfo fi(LYX_DIR);
 318                         if (!fi.exist()) {
 319                                 lyxerr << "Couldn't even find the default LYX_DIR." << endl
 320                                         << "Giving up." << endl;
 321                                 exit(1);
 322                         }
 323                         lyxerr << _("Using built-in default ")
 324                                << LYX_DIR << _(" but expect problems.")
 325                                << endl;
 326                 } else {
 327                         lyxerr << _("Expect problems.") << endl;
 328                 }
 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. We don't do that if
 365         // running in batch mode.
 366         if (gui) {
 367                 queryUserLyXDir(explicit_userdir);
 368         } else {
 369                 first_start = false;
 370         }
 371
 372         //
 373         // Shine up lyxrc defaults
 374         //
 375
 376         // Default template path: system_dir/templates
 377         if (lyxrc.template_path.empty()){
 378                 lyxrc.template_path = AddPath(system_lyxdir, "templates");
 379         }
 380
 381         // Default lastfiles file: $HOME/.lyx/lastfiles
 382         if (lyxrc.lastfiles.empty()){
 383                 lyxrc.lastfiles = AddName(user_lyxdir, "lastfiles");
 384         }
 385
 386         // Disable gui when either lyxrc or easyparse says so
 387         if (!gui)
 388                 lyxrc.use_gui = false;
 389
 390         // Calculate screen dpi as average of x-DPI and y-DPI:
 391         if (lyxrc.use_gui) {
 392                 lyxrc.dpi = getScreenDPI();
 393                 lyxerr[Debug::INIT] << "DPI setting detected to be "
 394                                                 << lyxrc.dpi + 0.5 << endl;
 395         } else {
 396                 lyxrc.dpi = 1; // I hope this is safe
 397         }
 398
 399         //
 400         // Read configuration files
 401         //
 402
 403         readRcFile("lyxrc.defaults");
 404         system_lyxrc = lyxrc;
 405         system_formats = formats;
 406         system_converters = converters;
 407         system_lcolor = lcolor;
 408
 409         // If there is a preferences file we read that instead
 410         // of the old lyxrc file.
 411         if (!readRcFile("preferences"))
 412             readRcFile("lyxrc");
 413
 414         // Read encodings
 415         readEncodingsFile("encodings");
 416         // Read languages
 417         readLanguagesFile("languages");
 418
 419         // Load the layouts
 420         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 421         LyXSetStyle();
 422
 423         // Ensure that we have really read a bind file, so that LyX is
 424         // usable.
 425         lyxrc.readBindFileIfNeeded();
 426
 427         // Read menus
 428         readUIFile(lyxrc.ui_file);
 429
 430         // Bind the X dead keys to the corresponding LyX functions if
 431         // necessary.
 432         if (lyxrc.override_x_deadkeys)
 433                 deadKeyBindings(toplevel_keymap.get());
 434
 435         if (lyxerr.debugging(Debug::LYXRC)) {
 436                 lyxrc.print();
 437         }
 438
 439         // Create temp directory
 440         os::setTmpDir(CreateLyXTmpDir(lyxrc.tempdir_path));
 441         system_tempdir = os::getTmpDir();
 442         if (lyxerr.debugging(Debug::INIT)) {
 443                 lyxerr << "LyX tmp dir: `" << system_tempdir << '\'' << endl;
 444         }
 445
 446         // load the lastfiles mini-database
 447         lyxerr[Debug::INIT] << "Reading lastfiles `"
 448                             << lyxrc.lastfiles << "'..." << endl;
 449         lastfiles = new LastFiles(lyxrc.lastfiles,
 450                                   lyxrc.check_lastfiles,
 451                                   lyxrc.num_lastfiles);
 452
 453         // start up the lyxserver. (is this a bit early?) (Lgb)
 454         // 0.12 this will be way to early, we need the GUI to be initialized
 455         // first, so move it for now.
 456         // lyxserver = new LyXServer;
 457 }
 458
 459
 460 // These are the default bindings known to LyX
 461 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 462 {
 463         kbmap->bind("Right", LFUN_RIGHT);
 464         kbmap->bind("Left", LFUN_LEFT);
 465         kbmap->bind("Up", LFUN_UP);
 466         kbmap->bind("Down", LFUN_DOWN);
 467
 468         kbmap->bind("Tab", LFUN_TAB);
 469         kbmap->bind("ISO_Left_Tab", LFUN_TAB); // jbl 2001-23-02
 470
 471         kbmap->bind("Home", LFUN_HOME);
 472         kbmap->bind("End", LFUN_END);
 473         kbmap->bind("Prior", LFUN_PRIOR);
 474         kbmap->bind("Next", LFUN_NEXT);
 475
 476         kbmap->bind("Return", LFUN_BREAKPARAGRAPH);
 477         //kbmap->bind("~C-~S-~M-nobreakspace", LFUN_PROTECTEDSPACE);
 478
 479         kbmap->bind("Delete", LFUN_DELETE);
 480         kbmap->bind("BackSpace", LFUN_BACKSPACE);
 481
 482         // kbmap->bindings to enable the use of the numeric keypad
 483         // e.g. Num Lock set
 484         //kbmap->bind("KP_0", LFUN_SELFINSERT);
 485         //kbmap->bind("KP_Decimal", LFUN_SELFINSERT);
 486         kbmap->bind("KP_Enter", LFUN_BREAKPARAGRAPH);
 487         //kbmap->bind("KP_1", LFUN_SELFINSERT);
 488         //kbmap->bind("KP_2", LFUN_SELFINSERT);
 489         //kbmap->bind("KP_3", LFUN_SELFINSERT);
 490         //kbmap->bind("KP_4", LFUN_SELFINSERT);
 491         //kbmap->bind("KP_5", LFUN_SELFINSERT);
 492         //kbmap->bind("KP_6", LFUN_SELFINSERT);
 493         //kbmap->bind("KP_Add", LFUN_SELFINSERT);
 494         //kbmap->bind("KP_7", LFUN_SELFINSERT);
 495         //kbmap->bind("KP_8", LFUN_SELFINSERT);
 496         //kbmap->bind("KP_9", LFUN_SELFINSERT);
 497         //kbmap->bind("KP_Divide", LFUN_SELFINSERT);
 498         //kbmap->bind("KP_Multiply", LFUN_SELFINSERT);
 499         //kbmap->bind("KP_Subtract", LFUN_SELFINSERT);
 500         kbmap->bind("KP_Right", LFUN_RIGHT);
 501         kbmap->bind("KP_Left", LFUN_LEFT);
 502         kbmap->bind("KP_Up", LFUN_UP);
 503         kbmap->bind("KP_Down", LFUN_DOWN);
 504         kbmap->bind("KP_Home", LFUN_HOME);
 505         kbmap->bind("KP_End", LFUN_END);
 506         kbmap->bind("KP_Prior", LFUN_PRIOR);
 507         kbmap->bind("KP_Next", LFUN_NEXT);
 508
 509         kbmap->bind("C-Tab", LFUN_TABINSERT);  // ale970515
 510         kbmap->bind("S-Tab", LFUN_SHIFT_TAB);  // jug20000522
 511         kbmap->bind("S-ISO_Left_Tab", LFUN_SHIFT_TAB); // jbl 2001-23-02
 512 }
 513
 514
 515 // LyX can optionally take over the handling of deadkeys
 516 void LyX::deadKeyBindings(kb_keymap * kbmap)
 517 {
 518         // bindKeyings for transparent handling of deadkeys
 519         // The keysyms are gotten from XFree86 X11R6
 520         kbmap->bind("~C-~S-~M-dead_acute", LFUN_ACUTE);
 521         kbmap->bind("~C-~S-~M-dead_breve", LFUN_BREVE);
 522         kbmap->bind("~C-~S-~M-dead_caron", LFUN_CARON);
 523         kbmap->bind("~C-~S-~M-dead_cedilla", LFUN_CEDILLA);
 524         kbmap->bind("~C-~S-~M-dead_abovering", LFUN_CIRCLE);
 525         kbmap->bind("~C-~S-~M-dead_circumflex", LFUN_CIRCUMFLEX);
 526         kbmap->bind("~C-~S-~M-dead_abovedot", LFUN_DOT);
 527         kbmap->bind("~C-~S-~M-dead_grave", LFUN_GRAVE);
 528         kbmap->bind("~C-~S-~M-dead_doubleacute", LFUN_HUNG_UMLAUT);
 529         kbmap->bind("~C-~S-~M-dead_macron", LFUN_MACRON);
 530         // nothing with this name
 531         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 532         kbmap->bind("~C-~S-~M-dead_tilde", LFUN_TILDE);
 533         kbmap->bind("~C-~S-~M-dead_diaeresis", LFUN_UMLAUT);
 534         // nothing with this name either...
 535         //kbmap->bind("~C-~S-~M-dead_underbar", LFUN_UNDERBAR);
 536         kbmap->bind("~C-~S-~M-dead_belowdot", LFUN_UNDERDOT);
 537         kbmap->bind("~C-~S-~M-dead_tie", LFUN_TIE);
 538         kbmap->bind("~C-~S-~M-dead_ogonek", LFUN_OGONEK);
 539 }
 540
 541
 542 // This one is not allowed to use anything on the main form, since that
 543 // one does not exist yet. (Asger)
 544 void LyX::queryUserLyXDir(bool explicit_userdir)
 545 {
 546         // Does user directory exist?
 547         FileInfo fileInfo(user_lyxdir);
 548         if (fileInfo.isOK() && fileInfo.isDir()) {
 549                 first_start = false;
 550                 return;
 551         } else {
 552                 first_start = !explicit_userdir;
 553         }
 554
 555         // If the user specified explicitely a directory, ask whether
 556         // to create it (otherwise, always create it)
 557         if (explicit_userdir &&
 558             !AskQuestion(_("You have specified an invalid LyX directory."),
 559                          _("It is needed to keep your own configuration."),
 560                          _("Should I try to set it up for you (recommended)?"))) {
 561                 lyxerr << _("Running without personal LyX directory.") << endl;
 562                 // No, let's use $HOME instead.
 563                 user_lyxdir = GetEnvPath("HOME");
 564                 return;
 565         }
 566
 567         // Tell the user what is going on
 568         lyxerr << _("LyX: Creating directory ") << user_lyxdir
 569                << _(" and running configure...") << endl;
 570
 571         // Create directory structure
 572         if (!createDirectory(user_lyxdir, 0755)) {
 573                 // Failed, let's use $HOME instead.
 574                 user_lyxdir = GetEnvPath("HOME");
 575                 lyxerr << _("Failed. Will use ") << user_lyxdir
 576                        << _(" instead.") << endl;
 577                 return;
 578         }
 579
 580         // Run configure in user lyx directory
 581         Path p(user_lyxdir);
 582         ::system(AddName(system_lyxdir, "configure").c_str());
 583         lyxerr << "LyX: " << _("Done!") << endl;
 584 }
 585
 586
 587 // Read the rc file `name'
 588 bool LyX::readRcFile(string const & name)
 589 {
 590         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 591
 592         string const lyxrc_path = LibFileSearch(string(), name);
 593         if (!lyxrc_path.empty()){
 594                 lyxerr[Debug::INIT] << "Found " << name
 595                                     << " in " << lyxrc_path << endl;
 596                 if (lyxrc.read(lyxrc_path) < 0) {
 597                         WriteAlert(_("LyX Warning!"),
 598                                    _("Error while reading ") + lyxrc_path + ".",
 599                                    _("Using built-in defaults."));
 600                         return false;
 601                 }
 602                 return true;
 603         } else {
 604                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 605         }
 606
 607         return false;
 608 }
 609
 610
 611 // Read the ui file `name'
 612 void LyX::readUIFile(string const & name)
 613 {
 614         enum Uitags {
 615                 ui_menuset = 1,
 616                 ui_toolbar,
 617                 ui_last
 618         };
 619
 620         struct keyword_item uitags[ui_last-1] = {
 621                 { "menuset", ui_menuset },
 622                 { "toolbar", ui_toolbar }
 623         };
 624
 625         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 626
 627         string const ui_path = LibFileSearch("ui", name, "ui");
 628
 629         if (ui_path.empty()) {
 630                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 631                 menubackend.defaults();
 632                 return;
 633         }
 634
 635         lyxerr[Debug::INIT] << "Found " << name
 636                             << " in " << ui_path << endl;
 637         LyXLex lex(uitags, ui_last - 1);
 638         lex.setFile(ui_path);
 639         if (!lex.isOK()) {
 640                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 641                        << endl;
 642         }
 643
 644         if (lyxerr.debugging(Debug::PARSER))
 645                 lex.printTable(lyxerr);
 646
 647         while (lex.isOK()) {
 648                 switch (lex.lex()) {
 649                 case ui_menuset:
 650                         menubackend.read(lex);
 651                         break;
 652
 653                 case ui_toolbar:
 654                         toolbardefaults.read(lex);
 655                         break;
 656
 657                 default:
 658                         if(!strip(lex.getString()).empty())
 659                                 lex.printError("LyX::ReadUIFile: "
 660                                                "Unknown menu tag: `$$Token'");
 661                         break;
 662                 }
 663         }
 664 }
 665
 666
 667 // Read the languages file `name'
 668 void LyX::readLanguagesFile(string const & name)
 669 {
 670         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 671
 672         string const lang_path = LibFileSearch(string(), name);
 673         if (lang_path.empty()) {
 674                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 675                 languages.setDefaults();
 676                 return;
 677         }
 678         languages.read(lang_path);
 679 }
 680
 681
 682 // Read the encodings file `name'
 683 void LyX::readEncodingsFile(string const & name)
 684 {
 685         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 686
 687         string const enc_path = LibFileSearch(string(), name);
 688         if (enc_path.empty()) {
 689                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 690                 return;
 691         }
 692         encodings.read(enc_path);
 693 }
 694
 695
 696 namespace {
 697
 698 // Set debugging level and report result to user
 699 void setDebuggingLevel(string const & dbgLevel)
 700 {
 701         lyxerr << _("Setting debug level to ") <<  dbgLevel << endl;
 702         lyxerr.level(Debug::value(dbgLevel));
 703         Debug::showLevel(lyxerr, lyxerr.level());
 704 }
 705
 706
 707 // Give command line help
 708 void commandLineHelp()
 709 {
 710         lyxerr << "LyX " LYX_VERSION << " of " LYX_RELEASE << endl;
 711         lyxerr <<
 712                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 713                   "Command line switches (case sensitive):\n"
 714                   "\t-help              summarize LyX usage\n"
 715                   "\t-userdir dir       try to set user directory to dir\n"
 716                   "\t-sysdir dir        try to set system directory to dir\n"
 717                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 718                   "\t-dbg feature[,feature]...\n"
 719                   "                  select the features to debug.\n"
 720                   "                  Type `lyx -dbg' to see the list of features\n"
 721                   "\t-x [--execute] command\n"
 722                   "                  where command is a lyx command.\n"
 723                   "\t-e [--export] fmt\n"
 724                   "                  where fmt is the export format of choice.\n"
 725                   "\t-i [--import] fmt file.xxx\n"
 726                   "                  where fmt is the import format of choice\n"
 727                   "                  and file.xxx is the file to be imported.\n"
 728                   "Check the LyX man page for more details.") << endl;
 729 }
 730
 731 } // namespace anon
 732
 733
 734 bool LyX::easyParse(int * argc, char * argv[])
 735 {
 736         bool gui = true;
 737         int removeargs = 0; // used when options are read
 738         for (int i = 1; i < *argc; ++i) {
 739                 string arg = argv[i];
 740
 741                 // Check for -dbg int
 742                 if (arg == "-dbg") {
 743                         if (i + 1 < *argc) {
 744                                 setDebuggingLevel(argv[i + 1]);
 745                                 removeargs = 2;
 746                         } else {
 747                                 lyxerr << _("List of supported debug flags:")
 748                                        << endl;
 749                                 Debug::showTags(lyxerr);
 750                                 exit(0);
 751                         }
 752                 }
 753                 // Check for "-sysdir"
 754                 else if (arg == "-sysdir") {
 755                         if (i + 1 < *argc) {
 756                                 system_lyxdir = argv[i + 1];
 757                                 removeargs = 2;
 758                         } else {
 759                                 lyxerr << _("Missing directory for -sysdir switch!")
 760                                        << endl;
 761                                 exit(0);
 762                         }
 763                 }
 764                 // Check for "-userdir"
 765                 else if (arg == "-userdir") {
 766                         if (i + 1 < *argc) {
 767                                 user_lyxdir = argv[i + 1];
 768                                 removeargs = 2;
 769                         } else {
 770                                 lyxerr << _("Missing directory for -userdir switch!")
 771                                        << endl;
 772                                 exit(0);
 773                         }
 774                 }
 775                 // Check for --help or -help
 776                 else if (arg == "--help" || arg == "-help") {
 777                         commandLineHelp();
 778                         exit(0);
 779                 }
 780                 // Check for "-nw": No XWindows as for emacs this should
 781                 // give a LyX that could be used in a terminal window.
 782                 //else if (arg == "-nw") {
 783                 //      gui = false;
 784                 //}
 785
 786                 // Check for "-x": Execute commands
 787                 else if (arg == "-x" || arg == "--execute") {
 788                         if (i + 1 < *argc) {
 789                                 batch_command = string(argv[i + 1]);
 790                                 removeargs = 2;
 791                         }
 792                         else
 793                                 lyxerr << _("Missing command string after  -x switch!") << endl;
 794
 795                         // Argh. Setting gui to false segfaults..
 796                         //gui = false;
 797                 }
 798
 799                 else if (arg == "-e" || arg == "--export") {
 800                         if (i + 1 < *argc) {
 801                                 string type(argv[i+1]);
 802                                 removeargs = 2;
 803                                 batch_command = "buffer-export " + type;
 804                                 gui = false;
 805                         } else
 806                                 lyxerr << _("Missing file type [eg latex, "
 807                                             "ps...] after ")
 808                                        << arg << _(" switch!") << endl;
 809                 }
 810                 else if (arg == "-i" || arg == "--import") {
 811                         if (i + 1 < *argc) {
 812                                 string type(argv[i+1]);
 813                                 string file(argv[i+2]);
 814                                 removeargs = 3;
 815
 816                                 batch_command = "buffer-import " + type + " " + file;
 817                                 lyxerr << "batch_command: "
 818                                        << batch_command << endl;
 819
 820                         } else
 821                                 lyxerr << _("Missing type [eg latex, "
 822                                             "ps...] after ")
 823                                        << arg << _(" switch!") << endl;
 824                 }
 825
 826                 if (removeargs > 0) {
 827                         // Now, remove used arguments by shifting
 828                         // the following ones removeargs places down.
 829                         (*argc) -= removeargs;
 830                         for (int j = i; j < (*argc); ++j)
 831                                 argv[j] = argv[j + removeargs];
 832                         --i; // After shift, check this number again.
 833                         removeargs = 0;
 834                 }
 835
 836         }
 837
 838         return gui;
 839 }
 840
 841
 842 extern "C"
 843 void error_handler(int err_sig)
 844 {
 845         switch (err_sig) {
 846         case SIGHUP:
 847                 lyxerr << "\nlyx: SIGHUP signal caught" << endl;
 848                 break;
 849         case SIGINT:
 850                 // no comments
 851                 break;
 852         case SIGFPE:
 853                 lyxerr << "\nlyx: SIGFPE signal caught" << endl;
 854                 break;
 855         case SIGSEGV:
 856                 lyxerr << "\nlyx: SIGSEGV signal caught" << endl;
 857                 lyxerr <<
 858                         "Sorry, you have found a bug in LyX."
 859                         " If possible, please read 'Known bugs'\n"
 860                         "under the Help menu and then send us "
 861                         "a full bug report. Thanks!" << endl;
 862                 break;
 863         case SIGTERM:
 864                 // no comments
 865                 break;
 866         }
 867
 868         // Deinstall the signal handlers
 869         signal(SIGHUP, SIG_DFL);
 870         signal(SIGINT, SIG_DFL);
 871         signal(SIGFPE, SIG_DFL);
 872         signal(SIGSEGV, SIG_DFL);
 873         signal(SIGTERM, SIG_DFL);
 874
 875         bufferlist.emergencyWriteAll();
 876
 877         lyxerr << "Bye." << endl;
 878         if (err_sig!= SIGHUP &&
 879            (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
 880                 lyx::abort();
 881         exit(0);
 882 }