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
  45 using std::endl;
  46
  47 extern void LoadLyXFile(string const &);
  48 extern void QuitLyX();
  49
  50 string system_lyxdir;
  51 string build_lyxdir;
  52 string system_tempdir;
  53 string user_lyxdir;     // Default $HOME/.lyx
  54
  55 // Should this be kept global? Asger says Yes.
  56 DebugStream lyxerr;
  57
  58 LastFiles * lastfiles;
  59
  60 // This is the global bufferlist object
  61 BufferList bufferlist;
  62
  63 LyXServer * lyxserver = 0;
  64 // this should be static, but I need it in buffer.C
  65 bool finished = false;  // flag, that we are quitting the program
  66
  67 // convenient to have it here.
  68 boost::scoped_ptr<kb_keymap> toplevel_keymap;
  69
  70
  71 LyX::LyX(int * argc, char * argv[])
  72 {
  73         // Prevent crash with --help
  74         lyxGUI = 0;
  75         lastfiles = 0;
  76
  77         // Here we need to parse the command line. At least
  78         // we need to parse for "-dbg" and "-help"
  79         bool gui = easyParse(argc, argv);
  80
  81         // Global bindings (this must be done as early as possible.) (Lgb)
  82         toplevel_keymap.reset(new kb_keymap);
  83         defaultKeyBindings(toplevel_keymap.get());
  84
  85         // Make the GUI object, and let it take care of the
  86         // command line arguments that concerns it.
  87         lyxerr[Debug::INIT] << "Initializing LyXGUI..." << endl;
  88         lyxGUI = new LyXGUI(this, argc, argv, gui);
  89         lyxerr[Debug::INIT] << "Initializing LyXGUI...done" << endl;
  90
  91         // Now the GUI and LyX have taken care of their arguments, so
  92         // the only thing left on the command line should be
  93         // filenames. Let's check anyway.
  94         for (int argi = 1; argi < *argc ; ++argi) {
  95                 if (argv[argi][0] == '-') {
  96                         lyxerr << _("Wrong command line option `")
  97                                << argv[argi]
  98                                << _("'. Exiting.") << endl;
  99                         exit(0);
 100                 }
 101         }
 102
 103         // Initialization of LyX (reads lyxrc and more)
 104         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 105         init(argc, argv, gui);
 106         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 107
 108         lyxGUI->init();
 109
 110         // Load the files specified in the command line.
 111         if ((*argc) == 2)
 112                 lyxerr[Debug::INFO] << "Opening document..." << endl;
 113         else if ((*argc) > 2)
 114                 lyxerr[Debug::INFO] << "Opening documents..." << endl;
 115
 116         Buffer * last_loaded = 0;
 117
 118         for (int argi = (*argc) - 1; argi >= 1; --argi) {
 119                 Buffer * loadb = bufferlist.loadLyXFile(argv[argi]);
 120                 if (loadb != 0) {
 121                         last_loaded = loadb;
 122                 }
 123         }
 124
 125         if (first_start) {
 126                 string splash = i18nLibFileSearch("examples", "splash.lyx");
 127                 lyxerr[Debug::INIT] << "Opening splash document "
 128                                << splash << "..." << endl;
 129                 Buffer * loadb = bufferlist.loadLyXFile(splash);
 130                 if (loadb != 0) {
 131                         last_loaded = loadb;
 132                 }
 133         }
 134
 135         if (last_loaded != 0) {
 136                 lyxerr[Debug::INIT] << "Yes we loaded some files." << endl;
 137                 if (lyxrc.use_gui)
 138                         lyxGUI->regBuf(last_loaded);
 139         }
 140
 141         // Execute batch commands if available
 142         if (!batch_command.empty()) {
 143                 lyxerr << "About to handle -x '"
 144                        << batch_command << "'" << endl;
 145
 146                 // no buffer loaded, create one
 147                 if (!last_loaded)
 148                         last_loaded = bufferlist.newFile("tmpfile", string());
 149
 150                 // try to dispatch to last loaded buffer first
 151                 bool dispatched = last_loaded->Dispatch(batch_command);
 152
 153                 // if this was successful, return.
 154                 // Maybe we could do something more clever than aborting...
 155                 if (dispatched) {
 156                         lyxerr << "We are done!" << endl;
 157                         QuitLyX();
 158                         return;
 159                 }
 160
 161                 // otherwise, let the GUI handle the batch command
 162                 lyxGUI->regBuf(last_loaded);
 163                 lyxGUI->getLyXView()->getLyXFunc()->Dispatch(batch_command);
 164
 165                 // fall through...
 166         }
 167
 168         // Let the ball begin...
 169         lyxGUI->runTime();
 170 }
 171
 172
 173 // A destructor is always necessary  (asierra-970604)
 174 LyX::~LyX()
 175 {
 176         delete lastfiles;
 177         delete lyxGUI;
 178 }
 179
 180
 181 extern "C" void error_handler(int err_sig);
 182
 183 void LyX::init(int */*argc*/, char **argv, bool gui)
 184 {
 185         // Install the signal handlers
 186         signal(SIGHUP, error_handler);
 187         signal(SIGFPE, error_handler);
 188         signal(SIGSEGV, error_handler);
 189         signal(SIGINT, error_handler);
 190         signal(SIGTERM, error_handler);
 191
 192         //
 193         // Determine path of binary
 194         //
 195
 196         string fullbinpath;
 197         string binpath = subst(argv[0], '\\', '/');
 198         string binname = OnlyFilename(argv[0]);
 199         // Sorry for system specific code. (SMiyata)
 200         if (suffixIs(binname, ".exe"))
 201                 binname.erase(binname.length()-4, string::npos);
 202
 203         binpath = ExpandPath(binpath); // This expands ./ and ~/
 204
 205         if (!AbsolutePath(binpath)) {
 206                 string binsearchpath = GetEnvPath("PATH");
 207                 // This will make "src/lyx" work always :-)
 208                 binsearchpath += ";.";
 209                 binpath = FileOpenSearch(binsearchpath, argv[0]);
 210         }
 211
 212         fullbinpath = binpath;
 213         binpath = MakeAbsPath(OnlyPath(binpath));
 214
 215         // In case we are running in place and compiled with shared libraries
 216         if (suffixIs(binpath, "/.libs/"))
 217                 binpath.erase(binpath.length()-6, string::npos);
 218
 219         if (binpath.empty()) {
 220                 lyxerr << _("Warning: could not determine path of binary.")
 221                        << "\n"
 222                        << _("If you have problems, try starting LyX with an absolute path.")
 223                        << endl;
 224         }
 225         lyxerr[Debug::INIT] << "Path of binary: " << binpath << endl;
 226
 227         //
 228         // Determine system directory.
 229         //
 230
 231         // Directories are searched in this order:
 232         // 1) -sysdir command line parameter
 233         // 2) LYX_DIR_11x environment variable
 234         // 3) Maybe <path of binary>/TOP_SRCDIR/lib
 235         // 4) <path of binary>/../share/<name of binary>/
 236         // 4a) repeat 4 after following the Symlink if <path of
 237         //     binary> is a symbolic link.
 238         // 5) hardcoded lyx_dir
 239         // The directory is checked for the presence of the file
 240         // "chkconfig.ltx", and if that is present, the directory
 241         // is accepted as the system directory.
 242         // If no chkconfig.ltx file is found, a warning is given,
 243         // and the hardcoded lyx_dir is used.
 244
 245         // If we had a command line switch, system_lyxdir is already set
 246         string searchpath;
 247         if (!system_lyxdir.empty())
 248                 searchpath= MakeAbsPath(system_lyxdir) + ';';
 249
 250         // LYX_DIR_11x environment variable
 251         string lyxdir = GetEnvPath("LYX_DIR_11x");
 252
 253         if (!lyxdir.empty()) {
 254                 lyxerr[Debug::INIT] << "LYX_DIR_11x: " << lyxdir << endl;
 255                 searchpath += lyxdir + ';';
 256         }
 257
 258         // <path of binary>/TOP_SRCDIR/lib
 259         build_lyxdir = MakeAbsPath("../lib", binpath);
 260         if (!FileSearch(build_lyxdir, "lyxrc.defaults").empty()) {
 261                 searchpath += MakeAbsPath(AddPath(TOP_SRCDIR, "lib"),
 262                                           binpath) + ';';
 263                 lyxerr[Debug::INIT] << "Checking whether LyX is run in "
 264                         "place... yes" << endl;
 265         } else {
 266                 lyxerr[Debug::INIT]
 267                         << "Checking whether LyX is run in place... no"
 268                         << endl;
 269                 build_lyxdir.erase();
 270         }
 271
 272         bool FollowLink;
 273         do {
 274           // Path of binary/../share/name of binary/
 275                 searchpath += NormalizePath(AddPath(binpath, "../share/") +
 276                       OnlyFilename(binname)) + ';';
 277
 278           // Follow Symlinks
 279                 FileInfo file(fullbinpath, true);
 280                 FollowLink = file.isLink();
 281                 if (FollowLink) {
 282                         string Link;
 283                         if (LyXReadLink(fullbinpath, Link)) {
 284                                 fullbinpath = Link;
 285                                 binpath = MakeAbsPath(OnlyPath(fullbinpath));
 286                         }
 287                         else {
 288                                 FollowLink = false;
 289                         }
 290                 }
 291         } while (FollowLink);
 292
 293         // Hardcoded dir
 294         searchpath += LYX_DIR;
 295
 296         // If debugging, show complete search path
 297         lyxerr[Debug::INIT] << "System directory search path: "
 298                             << searchpath << endl;
 299
 300         string const filename = "chkconfig.ltx";
 301         string temp = FileOpenSearch(searchpath, filename, string());
 302         system_lyxdir = OnlyPath(temp);
 303
 304         // Reduce "path/../path" stuff out of system directory
 305         system_lyxdir = NormalizePath(system_lyxdir);
 306
 307         bool path_shown = false;
 308
 309         // Warn if environment variable is set, but unusable
 310         if (!lyxdir.empty()) {
 311                 if (system_lyxdir != NormalizePath(lyxdir)) {
 312                         lyxerr <<_("LYX_DIR_11x environment variable no good.")
 313                                << '\n'
 314                                << _("System directory set to: ")
 315                                << system_lyxdir << endl;
 316                         path_shown = true;
 317                 }
 318         }
 319
 320         // Warn the user if we couldn't find "chkconfig.ltx"
 321         if (system_lyxdir == "./") {
 322                 lyxerr <<_("LyX Warning! Couldn't determine system directory. ")
 323                        <<_("Try the '-sysdir' command line parameter or ")
 324                        <<_("set the environment variable LYX_DIR_11x to the "
 325                            "LyX system directory ")
 326                        << _("containing the file `chkconfig.ltx'.") << endl;
 327                 if (!path_shown)
 328                         lyxerr << _("Using built-in default ")
 329                                << LYX_DIR << _(" but expect problems.")
 330                                << endl;
 331                 else
 332                         lyxerr << _("Expect problems.") << endl;
 333                 system_lyxdir = LYX_DIR;
 334                 path_shown = true;
 335         }
 336
 337         // Report the system directory if debugging is on
 338         if (!path_shown)
 339                 lyxerr[Debug::INIT] << "System directory: '"
 340                                     << system_lyxdir << '\'' << endl;
 341
 342         //
 343         // Determine user lyx-dir
 344         //
 345
 346         // Directories are searched in this order:
 347         // 1) -userdir command line parameter
 348         // 2) LYX_USERDIR_11x environment variable
 349         // 3) $HOME/.<name of binary>
 350
 351         // If we had a command line switch, user_lyxdir is already set
 352         bool explicit_userdir = true;
 353         if (user_lyxdir.empty()) {
 354
 355                 // LYX_USERDIR_11x environment variable
 356                 user_lyxdir = GetEnvPath("LYX_USERDIR_11x");
 357
 358                 // default behaviour
 359                 if (user_lyxdir.empty())
 360                         user_lyxdir = AddPath(GetEnvPath("HOME"),
 361                                                         string(".") + PACKAGE);
 362                         explicit_userdir = false;
 363         }
 364
 365         lyxerr[Debug::INIT] << "User LyX directory: '"
 366                             <<  user_lyxdir << '\'' << endl;
 367
 368         // Check that user LyX directory is ok. We don't do that if
 369         // running in batch mode.
 370         if (gui)
 371                 queryUserLyXDir(explicit_userdir);
 372         else
 373                 first_start = false;
 374
 375         //
 376         // Shine up lyxrc defaults
 377         //
 378
 379         // Default template path: system_dir/templates
 380         if (lyxrc.template_path.empty()){
 381                 lyxrc.template_path = AddPath(system_lyxdir, "templates");
 382         }
 383
 384         // Default lastfiles file: $HOME/.lyx/lastfiles
 385         if (lyxrc.lastfiles.empty()){
 386                 lyxrc.lastfiles = AddName(user_lyxdir, "lastfiles");
 387         }
 388
 389         // Disable gui when either lyxrc or easyparse says so
 390         if (!gui)
 391                 lyxrc.use_gui = false;
 392
 393         // Calculate screen dpi as average of x-DPI and y-DPI:
 394         if (lyxrc.use_gui) {
 395                 lyxrc.dpi = getScreenDPI();
 396                 lyxerr[Debug::INIT] << "DPI setting detected to be "
 397                                                 << lyxrc.dpi + 0.5 << endl;
 398         } else {
 399                 lyxrc.dpi = 1; // I hope this is safe
 400         }
 401
 402         //
 403         // Read configuration files
 404         //
 405
 406         ReadRcFile("lyxrc.defaults");
 407         system_lyxrc = lyxrc;
 408         system_formats = formats;
 409         system_converters = converters;
 410         system_lcolor = lcolor;
 411
 412         // If there is a preferences file we read that instead
 413         // of the old lyxrc file.
 414         if (!ReadRcFile("preferences"))
 415             ReadRcFile("lyxrc");
 416
 417         // Read encodings
 418         ReadEncodingsFile("encodings");
 419         // Read languages
 420         ReadLangugesFile("languages");
 421
 422         // Load the layouts
 423         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 424         LyXSetStyle();
 425
 426         // Ensure that we have really read a bind file, so that LyX is
 427         // usable.
 428         lyxrc.readBindFileIfNeeded();
 429
 430         // Read menus
 431         ReadUIFile(lyxrc.ui_file);
 432
 433         // Bind the X dead keys to the corresponding LyX functions if
 434         // necessary.
 435         if (lyxrc.override_x_deadkeys)
 436                 deadKeyBindings(toplevel_keymap.get());
 437
 438         if (lyxerr.debugging(Debug::LYXRC)) {
 439                 lyxrc.print();
 440         }
 441
 442         // Create temp directory
 443         system_tempdir = CreateLyXTmpDir(lyxrc.tempdir_path);
 444         if (lyxerr.debugging(Debug::INIT)) {
 445                 lyxerr << "LyX tmp dir: `" << system_tempdir << '\'' << endl;
 446         }
 447
 448         // load the lastfiles mini-database
 449         lyxerr[Debug::INIT] << "Reading lastfiles `"
 450                             << lyxrc.lastfiles << "'..." << endl;
 451         lastfiles = new LastFiles(lyxrc.lastfiles,
 452                                   lyxrc.check_lastfiles,
 453                                   lyxrc.num_lastfiles);
 454
 455         // start up the lyxserver. (is this a bit early?) (Lgb)
 456         // 0.12 this will be way to early, we need the GUI to be initialized
 457         // first, so move it for now.
 458         // lyxserver = new LyXServer;
 459 }
 460
 461
 462 // These are the default bindings known to LyX
 463 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 464 {
 465         kbmap->bind("Right", LFUN_RIGHT);
 466         kbmap->bind("Left", LFUN_LEFT);
 467         kbmap->bind("Up", LFUN_UP);
 468         kbmap->bind("Down", LFUN_DOWN);
 469
 470         kbmap->bind("Tab", LFUN_TAB);
 471         kbmap->bind("ISO_Left_Tab", LFUN_TAB); // jbl 2001-23-02
 472
 473         kbmap->bind("Home", LFUN_HOME);
 474         kbmap->bind("End", LFUN_END);
 475         kbmap->bind("Prior", LFUN_PRIOR);
 476         kbmap->bind("Next", LFUN_NEXT);
 477
 478         kbmap->bind("Return", LFUN_BREAKPARAGRAPH);
 479         kbmap->bind("~C-~S-~M-nobreakspace", LFUN_PROTECTEDSPACE);
 480
 481         kbmap->bind("Delete", LFUN_DELETE);
 482         kbmap->bind("BackSpace", LFUN_BACKSPACE);
 483
 484         // kbmap->bindings to enable the use of the numeric keypad
 485         // e.g. Num Lock set
 486         kbmap->bind("KP_0", LFUN_SELFINSERT);
 487         kbmap->bind("KP_Decimal", LFUN_SELFINSERT);
 488         kbmap->bind("KP_Enter", LFUN_SELFINSERT);
 489         kbmap->bind("KP_1", LFUN_SELFINSERT);
 490         kbmap->bind("KP_2", LFUN_SELFINSERT);
 491         kbmap->bind("KP_3", LFUN_SELFINSERT);
 492         kbmap->bind("KP_4", LFUN_SELFINSERT);
 493         kbmap->bind("KP_5", LFUN_SELFINSERT);
 494         kbmap->bind("KP_6", LFUN_SELFINSERT);
 495         kbmap->bind("KP_Add", LFUN_SELFINSERT);
 496         kbmap->bind("KP_7", LFUN_SELFINSERT);
 497         kbmap->bind("KP_8", LFUN_SELFINSERT);
 498         kbmap->bind("KP_9", LFUN_SELFINSERT);
 499         kbmap->bind("KP_Divide", LFUN_SELFINSERT);
 500         kbmap->bind("KP_Multiply", LFUN_SELFINSERT);
 501         kbmap->bind("KP_Subtract", LFUN_SELFINSERT);
 502
 503         /* Most self-insert keys are handled in the 'default:' section of
 504          * WorkAreaKeyPress - so we don't have to define them all.
 505          * However keys explicit decleared as self-insert are
 506          * handled seperatly (LFUN_SELFINSERT.) Lgb. */
 507
 508         kbmap->bind("C-Tab", LFUN_TABINSERT);  // ale970515
 509         kbmap->bind("S-Tab", LFUN_SHIFT_TAB);  // jug20000522
 510         kbmap->bind("S-ISO_Left_Tab", LFUN_SHIFT_TAB); // jbl 2001-23-02
 511 }
 512
 513
 514 // LyX can optionally take over the handling of deadkeys
 515 void LyX::deadKeyBindings(kb_keymap * kbmap)
 516 {
 517         // bindKeyings for transparent handling of deadkeys
 518         // The keysyms are gotten from XFree86 X11R6
 519         kbmap->bind("~C-~S-~M-dead_acute", LFUN_ACUTE);
 520         kbmap->bind("~C-~S-~M-dead_breve", LFUN_BREVE);
 521         kbmap->bind("~C-~S-~M-dead_caron", LFUN_CARON);
 522         kbmap->bind("~C-~S-~M-dead_cedilla", LFUN_CEDILLA);
 523         kbmap->bind("~C-~S-~M-dead_abovering", LFUN_CIRCLE);
 524         kbmap->bind("~C-~S-~M-dead_circumflex", LFUN_CIRCUMFLEX);
 525         kbmap->bind("~C-~S-~M-dead_abovedot", LFUN_DOT);
 526         kbmap->bind("~C-~S-~M-dead_grave", LFUN_GRAVE);
 527         kbmap->bind("~C-~S-~M-dead_doubleacute", LFUN_HUNG_UMLAUT);
 528         kbmap->bind("~C-~S-~M-dead_macron", LFUN_MACRON);
 529         // nothing with this name
 530         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 531         kbmap->bind("~C-~S-~M-dead_tilde", LFUN_TILDE);
 532         kbmap->bind("~C-~S-~M-dead_diaeresis", LFUN_UMLAUT);
 533         // nothing with this name either...
 534         //kbmap->bind("~C-~S-~M-dead_underbar", LFUN_UNDERBAR);
 535         kbmap->bind("~C-~S-~M-dead_belowdot", LFUN_UNDERDOT);
 536         kbmap->bind("~C-~S-~M-dead_tie", LFUN_TIE);
 537         kbmap->bind("~C-~S-~M-dead_ogonek", LFUN_OGONEK);
 538 }
 539
 540
 541 // This one is not allowed to use anything on the main form, since that
 542 // one does not exist yet. (Asger)
 543 void LyX::queryUserLyXDir(bool explicit_userdir)
 544 {
 545         // Does user directory exist?
 546         FileInfo fileInfo(user_lyxdir);
 547         if (fileInfo.isOK() && fileInfo.isDir()) {
 548                 first_start = false;
 549                 return;
 550         } else {
 551                 first_start = true;
 552         }
 553
 554         // Nope
 555         // Different wording if the user specifically requested a directory
 556         if (!AskQuestion( explicit_userdir
 557                          ? _("You have specified an invalid LyX directory.")
 558                          : _("You don't have a personal LyX directory.") ,
 559
 560                          _("It is needed to keep your own configuration."),
 561                          _("Should I try to set it up for you (recommended)?"))) {
 562                 lyxerr << _("Running without personal LyX directory.") << endl;
 563                 // No, let's use $HOME instead.
 564                 user_lyxdir = GetEnvPath("HOME");
 565                 return;
 566         }
 567
 568         // Tell the user what is going on
 569         lyxerr << _("LyX: Creating directory ") << user_lyxdir
 570                << _(" and running configure...") << endl;
 571
 572         // Create directory structure
 573         if (!createDirectory(user_lyxdir, 0755)) {
 574                 // Failed, let's use $HOME instead.
 575                 user_lyxdir = GetEnvPath("HOME");
 576                 lyxerr << _("Failed. Will use ") << user_lyxdir
 577                        << _(" instead.") << endl;
 578                 return;
 579         }
 580
 581         // Run configure in user lyx directory
 582         Path p(user_lyxdir);
 583         ::system(AddName(system_lyxdir, "configure").c_str());
 584         lyxerr << "LyX: " << _("Done!") << endl;
 585 }
 586
 587
 588 // Read the rc file `name'
 589 bool LyX::ReadRcFile(string const & name)
 590 {
 591         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 592
 593         string lyxrc_path = LibFileSearch(string(), name);
 594         if (!lyxrc_path.empty()){
 595                 lyxerr[Debug::INIT] << "Found " << name
 596                                     << " in " << lyxrc_path << endl;
 597                 if (lyxrc.read(lyxrc_path) < 0) {
 598                         WriteAlert(_("LyX Warning!"),
 599                                    _("Error while reading ")+lyxrc_path+".",
 600                                    _("Using built-in defaults."));
 601                         return false;
 602                 }
 603                 return true;
 604         } else
 605                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 606         return false;
 607 }
 608
 609
 610 // Read the ui file `name'
 611 void LyX::ReadUIFile(string const & name)
 612 {
 613         enum Uitags {
 614                 ui_menuset = 1,
 615                 ui_toolbar,
 616                 ui_last
 617         };
 618
 619         struct keyword_item uitags[ui_last-1] = {
 620                 { "menuset", ui_menuset },
 621                 { "toolbar", ui_toolbar }
 622         };
 623
 624         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 625
 626         string ui_path = LibFileSearch("ui", name, "ui");
 627
 628         if (ui_path.empty()) {
 629                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 630                 menubackend.defaults();
 631                 return;
 632         }
 633
 634         lyxerr[Debug::INIT] << "Found " << name
 635                             << " in " << ui_path << endl;
 636         LyXLex lex(uitags, ui_last - 1);
 637         lex.setFile(ui_path);
 638         if (!lex.IsOK()) {
 639                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 640                        << endl;
 641         }
 642
 643         if (lyxerr.debugging(Debug::PARSER))
 644                 lex.printTable(lyxerr);
 645
 646         while (lex.IsOK()) {
 647                 switch (lex.lex()) {
 648                 case ui_menuset:
 649                         menubackend.read(lex);
 650                         break;
 651
 652                 case ui_toolbar:
 653                         toolbardefaults.read(lex);
 654                         break;
 655
 656                 default:
 657                         lex.printError("LyX::ReadUFile: "
 658                                        "Unknown menu tag: `$$Token'");
 659                         break;
 660                 }
 661         }
 662 }
 663
 664
 665 // Read the languages file `name'
 666 void LyX::ReadLangugesFile(string const & name)
 667 {
 668         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 669
 670         string lang_path = LibFileSearch(string(), name);
 671         if (lang_path.empty()) {
 672                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 673                 languages.setDefaults();
 674                 return;
 675         }
 676         languages.read(lang_path);
 677 }
 678
 679
 680 // Read the encodings file `name'
 681 void LyX::ReadEncodingsFile(string const & name)
 682 {
 683         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 684
 685         string enc_path = LibFileSearch(string(), name);
 686         if (enc_path.empty()) {
 687                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 688                 return;
 689         }
 690         encodings.read(enc_path);
 691 }
 692
 693
 694 namespace {
 695
 696 // Set debugging level and report result to user
 697 void setDebuggingLevel(string const & dbgLevel)
 698 {
 699         lyxerr << _("Setting debug level to ") <<  dbgLevel << endl;
 700         lyxerr.level(Debug::value(dbgLevel));
 701         Debug::showLevel(lyxerr, lyxerr.level());
 702 }
 703
 704
 705 // Give command line help
 706 void commandLineHelp()
 707 {
 708         lyxerr << "LyX " LYX_VERSION << " of " LYX_RELEASE << endl;
 709         lyxerr <<
 710                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 711                   "Command line switches (case sensitive):\n"
 712                   "\t-help              summarize LyX usage\n"
 713                   "\t-userdir dir       try to set user directory to dir\n"
 714                   "\t-sysdir dir        try to set system directory to dir\n"
 715                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 716                   "\t-dbg feature[,feature]...\n"
 717                   "                  select the features to debug.\n"
 718                   "                  Type `lyx -dbg' to see the list of features\n"
 719                   "\t-x [--execute] command\n"
 720                   "                  where command is a lyx command.\n"
 721                   "\t-e [--export] fmt\n"
 722                   "                  where fmt is the export format of choice.\n"
 723                   "\t-i [--import] fmt file.xxx\n"
 724                   "                  where fmt is the import format of choice\n"
 725                   "                  and file.xxx is the file to be imported.\n"
 726                   "Check the LyX man page for more details.") << endl;
 727 }
 728
 729 } // namespace anon
 730
 731
 732 bool LyX::easyParse(int * argc, char * argv[])
 733 {
 734         bool gui = true;
 735         int removeargs = 0; // used when options are read
 736         for (int i = 1; i < *argc; ++i) {
 737                 string arg = argv[i];
 738
 739                 // Check for -dbg int
 740                 if (arg == "-dbg") {
 741                         if (i + 1 < *argc) {
 742                                 setDebuggingLevel(argv[i + 1]);
 743                                 removeargs = 2;
 744                         } else {
 745                                 lyxerr << _("List of supported debug flags:")
 746                                        << endl;
 747                                 Debug::showTags(lyxerr);
 748                                 exit(0);
 749                         }
 750                 }
 751                 // Check for "-sysdir"
 752                 else if (arg == "-sysdir") {
 753                         if (i + 1 < *argc) {
 754                                 system_lyxdir = argv[i + 1];
 755                                 removeargs = 2;
 756                         } else {
 757                                 lyxerr << _("Missing directory for -sysdir switch!")
 758                                        << endl;
 759                                 exit(0);
 760                         }
 761                 }
 762                 // Check for "-userdir"
 763                 else if (arg == "-userdir") {
 764                         if (i + 1 < *argc) {
 765                                 user_lyxdir = argv[i + 1];
 766                                 removeargs = 2;
 767                         } else {
 768                                 lyxerr << _("Missing directory for -userdir switch!")
 769                                        << endl;
 770                                 exit(0);
 771                         }
 772                 }
 773                 // Check for --help or -help
 774                 else if (arg == "--help" || arg == "-help") {
 775                         commandLineHelp();
 776                         exit(0);
 777                 }
 778                 // Check for "-nw": No XWindows as for emacs this should
 779                 // give a LyX that could be used in a terminal window.
 780                 //else if (arg == "-nw") {
 781                 //      gui = false;
 782                 //}
 783
 784                 // Check for "-x": Execute commands
 785                 else if (arg == "-x" || arg == "--execute") {
 786                         if (i + 1 < *argc) {
 787                                 batch_command = string(argv[i + 1]);
 788                                 removeargs = 2;
 789                         }
 790                         else
 791                                 lyxerr << _("Missing command string after  -x switch!") << endl;
 792
 793                         // Argh. Setting gui to false segfaults..
 794                         //gui = false;
 795                 }
 796
 797                 else if (arg == "-e" || arg == "--export") {
 798                         if (i + 1 < *argc) {
 799                                 string type(argv[i+1]);
 800                                 removeargs = 2;
 801                                 batch_command = "buffer-export " + type;
 802                                 gui = false;
 803                         } else
 804                                 lyxerr << _("Missing file type [eg latex, "
 805                                             "ps...] after ")
 806                                        << arg << _(" switch!") << endl;
 807                 }
 808                 else if (arg == "-i" || arg == "--import") {
 809                         if (i + 1 < *argc) {
 810                                 string type(argv[i+1]);
 811                                 string file(argv[i+2]);
 812                                 removeargs = 3;
 813
 814                                 batch_command = "buffer-import " + type + " " + file;
 815                                 lyxerr << "batch_command: "
 816                                        << batch_command << endl;
 817
 818                         } else
 819                                 lyxerr << _("Missing type [eg latex, "
 820                                             "ps...] after ")
 821                                        << arg << _(" switch!") << endl;
 822                 }
 823
 824                 if (removeargs > 0) {
 825                         // Now, remove used arguments by shifting
 826                         // the following ones removeargs places down.
 827                         (*argc) -= removeargs;
 828                         for (int j = i; j < (*argc); ++j)
 829                                 argv[j] = argv[j + removeargs];
 830                         --i; // After shift, check this number again.
 831                         removeargs = 0;
 832                 }
 833
 834         }
 835
 836         return gui;
 837 }
 838
 839
 840 extern "C"
 841 void error_handler(int err_sig)
 842 {
 843         switch (err_sig) {
 844         case SIGHUP:
 845                 lyxerr << "\nlyx: SIGHUP signal caught" << endl;
 846                 break;
 847         case SIGINT:
 848                 // no comments
 849                 break;
 850         case SIGFPE:
 851                 lyxerr << "\nlyx: SIGFPE signal caught" << endl;
 852                 break;
 853         case SIGSEGV:
 854                 lyxerr << "\nlyx: SIGSEGV signal caught" << endl;
 855                 lyxerr <<
 856                         "Sorry, you have found a bug in LyX."
 857                         " If possible, please read 'Known bugs'\n"
 858                         "under the Help menu and then send us "
 859                         "a full bug report. Thanks!" << endl;
 860                 break;
 861         case SIGTERM:
 862                 // no comments
 863                 break;
 864         }
 865
 866         // Deinstall the signal handlers
 867         signal(SIGHUP, SIG_DFL);
 868         signal(SIGINT, SIG_DFL);
 869         signal(SIGFPE, SIG_DFL);
 870         signal(SIGSEGV, SIG_DFL);
 871         signal(SIGTERM, SIG_DFL);
 872
 873         bufferlist.emergencyWriteAll();
 874
 875         lyxerr << "Bye." << endl;
 876         if (err_sig!= SIGHUP &&
 877            (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
 878                 lyx::abort();
 879         exit(0);
 880 }