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
  43 using std::endl;
  44
  45 extern void LoadLyXFile(string const &);
  46 extern void QuitLyX();
  47
  48 string system_lyxdir;
  49 string build_lyxdir;
  50 string system_tempdir;
  51 string user_lyxdir;     // Default $HOME/.lyx
  52
  53 // Should this be kept global? Asger says Yes.
  54 DebugStream lyxerr;
  55
  56 LastFiles * lastfiles;
  57
  58 // This is the global bufferlist object
  59 BufferList bufferlist;
  60
  61 LyXServer * lyxserver = 0;
  62 // this should be static, but I need it in buffer.C
  63 bool finished = false;  // flag, that we are quitting the program
  64
  65 // convenient to have it here.
  66 kb_keymap * toplevel_keymap;
  67
  68
  69 LyX::LyX(int * argc, char * argv[])
  70 {
  71         // Prevent crash with --help
  72         lyxGUI = 0;
  73         lastfiles = 0;
  74
  75         // Here we need to parse the command line. At least
  76         // we need to parse for "-dbg" and "-help"
  77         bool gui = easyParse(argc, argv);
  78
  79         // Global bindings (this must be done as early as possible.) (Lgb)
  80         toplevel_keymap = new kb_keymap;
  81         defaultKeyBindings(toplevel_keymap);
  82
  83         // Make the GUI object, and let it take care of the
  84         // command line arguments that concerns it.
  85         lyxerr[Debug::INIT] << "Initializing LyXGUI..." << endl;
  86         lyxGUI = new LyXGUI(this, argc, argv, gui);
  87         lyxerr[Debug::INIT] << "Initializing LyXGUI...done" << endl;
  88
  89         // Now the GUI and LyX have taken care of their arguments, so
  90         // the only thing left on the command line should be
  91         // filenames. Let's check anyway.
  92         for (int argi = 1; argi < *argc ; ++argi) {
  93                 if (argv[argi][0] == '-') {
  94                         lyxerr << _("Wrong command line option `")
  95                                << argv[argi]
  96                                << _("'. Exiting.") << endl;
  97                         exit(0);
  98                 }
  99         }
 100
 101         // Initialization of LyX (reads lyxrc and more)
 102         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 103         init(argc, argv, gui);
 104         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 105
 106         lyxGUI->init();
 107
 108         // Load the files specified in the command line.
 109         if ((*argc) == 2)
 110                 lyxerr[Debug::INFO] << "Opening document..." << endl;
 111         else if ((*argc) > 2)
 112                 lyxerr[Debug::INFO] << "Opening documents..." << endl;
 113
 114         Buffer * last_loaded = 0;
 115
 116         for (int argi = (*argc) - 1; argi >= 1; --argi) {
 117                 Buffer * loadb = bufferlist.loadLyXFile(argv[argi]);
 118                 if (loadb != 0) {
 119                         last_loaded = loadb;
 120                 }
 121         }
 122
 123         if (first_start) {
 124                 string splash = i18nLibFileSearch("examples", "splash.lyx");
 125                 lyxerr[Debug::INIT] << "Opening splash document "
 126                                << splash << "..." << endl;
 127                 Buffer * loadb = bufferlist.loadLyXFile(splash);
 128                 if (loadb != 0) {
 129                         last_loaded = loadb;
 130                 }
 131         }
 132
 133         if (last_loaded != 0) {
 134                 lyxerr[Debug::INIT] << "Yes we loaded some files." << endl;
 135                 if (lyxrc.use_gui)
 136                         lyxGUI->regBuf(last_loaded);
 137         }
 138
 139         // Execute batch commands if available
 140         if (!batch_command.empty()) {
 141                 lyxerr << "About to handle -x '"
 142                        << batch_command << "'" << endl;
 143
 144                 // no buffer loaded, create one
 145                 if (!last_loaded)
 146                         last_loaded = bufferlist.newFile("tmpfile", string());
 147
 148                 // try to dispatch to last loaded buffer first
 149                 bool dispatched = last_loaded->Dispatch(batch_command);
 150
 151                 // if this was successful, return.
 152                 // Maybe we could do something more clever than aborting...
 153                 if (dispatched) {
 154                         lyxerr << "We are done!" << endl;
 155                         QuitLyX();
 156                         return;
 157                 }
 158
 159                 // otherwise, let the GUI handle the batch command
 160                 lyxGUI->regBuf(last_loaded);
 161                 lyxGUI->getLyXView()->getLyXFunc()->Dispatch(batch_command);
 162
 163                 // fall through...
 164         }
 165
 166         // Let the ball begin...
 167         lyxGUI->runTime();
 168 }
 169
 170
 171 // A destructor is always necessary  (asierra-970604)
 172 LyX::~LyX()
 173 {
 174         delete lastfiles;
 175         delete lyxGUI;
 176 }
 177
 178
 179 extern "C" void error_handler(int err_sig);
 180
 181 void LyX::init(int */*argc*/, char **argv, bool gui)
 182 {
 183         // Install the signal handlers
 184         signal(SIGHUP, error_handler);
 185         signal(SIGFPE, error_handler);
 186         signal(SIGSEGV, error_handler);
 187         signal(SIGINT, error_handler);
 188         signal(SIGTERM, error_handler);
 189
 190         //
 191         // Determine path of binary
 192         //
 193
 194         string fullbinpath;
 195         string binpath = subst(argv[0], '\\', '/');
 196         string binname = OnlyFilename(argv[0]);
 197         // Sorry for system specific code. (SMiyata)
 198         if (suffixIs(binname, ".exe"))
 199                 binname.erase(binname.length()-4, string::npos);
 200
 201         binpath = ExpandPath(binpath); // This expands ./ and ~/
 202
 203         if (!AbsolutePath(binpath)) {
 204                 string binsearchpath = GetEnvPath("PATH");
 205                 // This will make "src/lyx" work always :-)
 206                 binsearchpath += ";.";
 207                 binpath = FileOpenSearch(binsearchpath, argv[0]);
 208         }
 209
 210         fullbinpath = binpath;
 211         binpath = MakeAbsPath(OnlyPath(binpath));
 212
 213         // In case we are running in place and compiled with shared libraries
 214         if (suffixIs(binpath, "/.libs/"))
 215                 binpath.erase(binpath.length()-6, string::npos);
 216
 217         if (binpath.empty()) {
 218                 lyxerr << _("Warning: could not determine path of binary.")
 219                        << "\n"
 220                        << _("If you have problems, try starting LyX with an absolute path.")
 221                        << endl;
 222         }
 223         lyxerr[Debug::INIT] << "Path of binary: " << binpath << endl;
 224
 225         //
 226         // Determine system directory.
 227         //
 228
 229         // Directories are searched in this order:
 230         // 1) -sysdir command line parameter
 231         // 2) LYX_DIR_11x environment variable
 232         // 3) Maybe <path of binary>/TOP_SRCDIR/lib
 233         // 4) <path of binary>/../share/<name of binary>/
 234         // 4a) repeat 4 after following the Symlink if <path of
 235         //     binary> is a symbolic link.
 236         // 5) hardcoded lyx_dir
 237         // The directory is checked for the presence of the file
 238         // "chkconfig.ltx", and if that is present, the directory
 239         // is accepted as the system directory.
 240         // If no chkconfig.ltx file is found, a warning is given,
 241         // and the hardcoded lyx_dir is used.
 242
 243         // If we had a command line switch, system_lyxdir is already set
 244         string searchpath;
 245         if (!system_lyxdir.empty())
 246                 searchpath= MakeAbsPath(system_lyxdir) + ';';
 247
 248         // LYX_DIR_11x environment variable
 249         string lyxdir = GetEnvPath("LYX_DIR_11x");
 250
 251         if (!lyxdir.empty()) {
 252                 lyxerr[Debug::INIT] << "LYX_DIR_11x: " << lyxdir << endl;
 253                 searchpath += lyxdir + ';';
 254         }
 255
 256         // <path of binary>/TOP_SRCDIR/lib
 257         build_lyxdir = MakeAbsPath("../lib", binpath);
 258         if (!FileSearch(build_lyxdir, "lyxrc.defaults").empty()) {
 259                 searchpath += MakeAbsPath(AddPath(TOP_SRCDIR, "lib"),
 260                                           binpath) + ';';
 261                 lyxerr[Debug::INIT] << "Checking whether LyX is run in "
 262                         "place... yes" << endl;
 263         } else {
 264                 lyxerr[Debug::INIT]
 265                         << "Checking whether LyX is run in place... no"
 266                         << endl;
 267                 build_lyxdir.erase();
 268         }
 269
 270         bool FollowLink;
 271         do {
 272           // Path of binary/../share/name of binary/
 273                 searchpath += NormalizePath(AddPath(binpath, "../share/") +
 274                       OnlyFilename(binname)) + ';';
 275
 276           // Follow Symlinks
 277                 FileInfo file(fullbinpath, true);
 278                 FollowLink = file.isLink();
 279                 if (FollowLink) {
 280                         string Link;
 281                         if (LyXReadLink(fullbinpath, Link)) {
 282                                 fullbinpath = Link;
 283                                 binpath = MakeAbsPath(OnlyPath(fullbinpath));
 284                         }
 285                         else {
 286                                 FollowLink = false;
 287                         }
 288                 }
 289         } while (FollowLink);
 290
 291         // Hardcoded dir
 292         searchpath += LYX_DIR;
 293
 294         // If debugging, show complete search path
 295         lyxerr[Debug::INIT] << "System directory search path: "
 296                             << searchpath << endl;
 297
 298         string const filename = "chkconfig.ltx";
 299         string temp = FileOpenSearch(searchpath, filename, string());
 300         system_lyxdir = OnlyPath(temp);
 301
 302         // Reduce "path/../path" stuff out of system directory
 303         system_lyxdir = NormalizePath(system_lyxdir);
 304
 305         bool path_shown = false;
 306
 307         // Warn if environment variable is set, but unusable
 308         if (!lyxdir.empty()) {
 309                 if (system_lyxdir != NormalizePath(lyxdir)) {
 310                         lyxerr <<_("LYX_DIR_11x environment variable no good.")
 311                                << '\n'
 312                                << _("System directory set to: ")
 313                                << system_lyxdir << endl;
 314                         path_shown = true;
 315                 }
 316         }
 317
 318         // Warn the user if we couldn't find "chkconfig.ltx"
 319         if (system_lyxdir == "./") {
 320                 lyxerr <<_("LyX Warning! Couldn't determine system directory.")
 321                        <<_("Try the '-sysdir' command line parameter or")
 322                        <<_("set the environment variable LYX_DIR_11x to the "
 323                            "LyX system directory")
 324                        << _("containing the file `chkconfig.ltx'.") << endl;
 325                 if (!path_shown)
 326                         lyxerr << _("Using built-in default ")
 327                                << LYX_DIR << _(" but expect problems.")
 328                                << endl;
 329                 else
 330                         lyxerr << _("Expect problems.") << endl;
 331                 system_lyxdir = LYX_DIR;
 332                 path_shown = true;
 333         }
 334
 335         // Report the system directory if debugging is on
 336         if (!path_shown)
 337                 lyxerr[Debug::INIT] << "System directory: '"
 338                                     << system_lyxdir << '\'' << endl;
 339
 340         //
 341         // Determine user lyx-dir
 342         //
 343
 344         // Directories are searched in this order:
 345         // 1) -userdir command line parameter
 346         // 2) LYX_USERDIR_11x environment variable
 347         // 3) $HOME/.<name of binary>
 348
 349         // If we had a command line switch, user_lyxdir is already set
 350         bool explicit_userdir = true;
 351         if (user_lyxdir.empty()) {
 352
 353         // LYX_USERDIR_11x environment variable
 354                 user_lyxdir = GetEnvPath("LYX_USERDIR_11x");
 355
 356         // default behaviour
 357                 if (user_lyxdir.empty())
 358                         user_lyxdir = AddPath(GetEnvPath("HOME"),
 359                                                         string(".") + PACKAGE);
 360                         explicit_userdir = false;
 361         }
 362
 363         lyxerr[Debug::INIT] << "User LyX directory: '"
 364                             <<  user_lyxdir << '\'' << endl;
 365
 366         // Check that user LyX directory is ok.
 367         queryUserLyXDir(explicit_userdir);
 368
 369         //
 370         // Shine up lyxrc defaults
 371         //
 372
 373         // Default template path: system_dir/templates
 374         if (lyxrc.template_path.empty()){
 375                 lyxrc.template_path = AddPath(system_lyxdir, "templates");
 376         }
 377
 378         // Default lastfiles file: $HOME/.lyx/lastfiles
 379         if (lyxrc.lastfiles.empty()){
 380                 lyxrc.lastfiles = AddName(user_lyxdir, "lastfiles");
 381         }
 382
 383         // Disable gui when either lyxrc or easyparse says so
 384         if (!gui)
 385                 lyxrc.use_gui = false;
 386
 387         // Calculate screen dpi as average of x-DPI and y-DPI:
 388         if (lyxrc.use_gui) {
 389                 lyxrc.dpi = getScreenDPI();
 390                 lyxerr[Debug::INIT] << "DPI setting detected to be "
 391                                                 << lyxrc.dpi + 0.5 << endl;
 392         } else {
 393                 lyxrc.dpi = 1; // I hope this is safe
 394         }
 395
 396         //
 397         // Read configuration files
 398         //
 399
 400         ReadRcFile("lyxrc.defaults");
 401         system_lyxrc = lyxrc;
 402         // If there is a preferences file we read that instead
 403         // of the old lyxrc file.
 404         if (!ReadRcFile("preferences"))
 405             ReadRcFile("lyxrc");
 406
 407         // Read encodings
 408         ReadEncodingsFile("encodings");
 409         // Read languages
 410         ReadLangugesFile("languages");
 411
 412         // Load the layouts
 413         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 414         LyXSetStyle();
 415
 416         // Ensure that we have really read a bind file, so that LyX is
 417         // usable.
 418         if (!lyxrc.hasBindFile)
 419                 lyxrc.ReadBindFile();
 420
 421         // Read menus
 422         ReadUIFile(lyxrc.ui_file);
 423
 424         // Bind the X dead keys to the corresponding LyX functions if
 425         // necessary.
 426         if (lyxrc.override_x_deadkeys)
 427                 deadKeyBindings(toplevel_keymap);
 428
 429         if (lyxerr.debugging(Debug::LYXRC)) {
 430                 lyxrc.print();
 431         }
 432
 433         // Create temp directory
 434         system_tempdir = CreateLyXTmpDir(lyxrc.tempdir_path);
 435         if (lyxerr.debugging(Debug::INIT)) {
 436                 lyxerr << "LyX tmp dir: `" << system_tempdir << '\'' << endl;
 437         }
 438
 439         // load the lastfiles mini-database
 440         lyxerr[Debug::INIT] << "Reading lastfiles `"
 441                             << lyxrc.lastfiles << "'..." << endl;
 442         lastfiles = new LastFiles(lyxrc.lastfiles,
 443                                   lyxrc.check_lastfiles,
 444                                   lyxrc.num_lastfiles);
 445
 446         // start up the lyxserver. (is this a bit early?) (Lgb)
 447         // 0.12 this will be way to early, we need the GUI to be initialized
 448         // first, so move it for now.
 449         // lyxserver = new LyXServer;
 450 }
 451
 452
 453 // These are the default bindings known to LyX
 454 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 455 {
 456         kbmap->bind("Right", LFUN_RIGHT);
 457         kbmap->bind("Left", LFUN_LEFT);
 458         kbmap->bind("Up", LFUN_UP);
 459         kbmap->bind("Down", LFUN_DOWN);
 460
 461         kbmap->bind("Tab", LFUN_TAB);
 462
 463         kbmap->bind("Home", LFUN_HOME);
 464         kbmap->bind("End", LFUN_END);
 465         kbmap->bind("Prior", LFUN_PRIOR);
 466         kbmap->bind("Next", LFUN_NEXT);
 467
 468         kbmap->bind("Return", LFUN_BREAKPARAGRAPH);
 469         kbmap->bind("~C-~S-~M-nobreakspace", LFUN_PROTECTEDSPACE);
 470
 471         kbmap->bind("Delete", LFUN_DELETE);
 472         kbmap->bind("BackSpace", LFUN_BACKSPACE);
 473
 474         // kbmap->bindings to enable the use of the numeric keypad
 475         // e.g. Num Lock set
 476         kbmap->bind("KP_0", LFUN_SELFINSERT);
 477         kbmap->bind("KP_Decimal", LFUN_SELFINSERT);
 478         kbmap->bind("KP_Enter", LFUN_SELFINSERT);
 479         kbmap->bind("KP_1", LFUN_SELFINSERT);
 480         kbmap->bind("KP_2", LFUN_SELFINSERT);
 481         kbmap->bind("KP_3", LFUN_SELFINSERT);
 482         kbmap->bind("KP_4", LFUN_SELFINSERT);
 483         kbmap->bind("KP_5", LFUN_SELFINSERT);
 484         kbmap->bind("KP_6", LFUN_SELFINSERT);
 485         kbmap->bind("KP_Add", LFUN_SELFINSERT);
 486         kbmap->bind("KP_7", LFUN_SELFINSERT);
 487         kbmap->bind("KP_8", LFUN_SELFINSERT);
 488         kbmap->bind("KP_9", LFUN_SELFINSERT);
 489         kbmap->bind("KP_Divide", LFUN_SELFINSERT);
 490         kbmap->bind("KP_Multiply", LFUN_SELFINSERT);
 491         kbmap->bind("KP_Subtract", LFUN_SELFINSERT);
 492
 493         /* Most self-insert keys are handled in the 'default:' section of
 494          * WorkAreaKeyPress - so we don't have to define them all.
 495          * However keys explicit decleared as self-insert are
 496          * handled seperatly (LFUN_SELFINSERT.) Lgb. */
 497
 498         kbmap->bind("C-Tab", LFUN_TABINSERT);  // ale970515
 499         kbmap->bind("S-Tab", LFUN_SHIFT_TAB);  // jug20000522
 500 }
 501
 502
 503 // LyX can optionally take over the handling of deadkeys
 504 void LyX::deadKeyBindings(kb_keymap * kbmap)
 505 {
 506         // bindKeyings for transparent handling of deadkeys
 507         // The keysyms are gotten from XFree86 X11R6
 508         kbmap->bind("~C-~S-~M-dead_acute", LFUN_ACUTE);
 509         kbmap->bind("~C-~S-~M-dead_breve", LFUN_BREVE);
 510         kbmap->bind("~C-~S-~M-dead_caron", LFUN_CARON);
 511         kbmap->bind("~C-~S-~M-dead_cedilla", LFUN_CEDILLA);
 512         kbmap->bind("~C-~S-~M-dead_abovering", LFUN_CIRCLE);
 513         kbmap->bind("~C-~S-~M-dead_circumflex", LFUN_CIRCUMFLEX);
 514         kbmap->bind("~C-~S-~M-dead_abovedot", LFUN_DOT);
 515         kbmap->bind("~C-~S-~M-dead_grave", LFUN_GRAVE);
 516         kbmap->bind("~C-~S-~M-dead_doubleacute", LFUN_HUNG_UMLAUT);
 517         kbmap->bind("~C-~S-~M-dead_macron", LFUN_MACRON);
 518         // nothing with this name
 519         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 520         kbmap->bind("~C-~S-~M-dead_tilde", LFUN_TILDE);
 521         kbmap->bind("~C-~S-~M-dead_diaeresis", LFUN_UMLAUT);
 522         // nothing with this name either...
 523         //kbmap->bind("~C-~S-~M-dead_underbar", LFUN_UNDERBAR);
 524         kbmap->bind("~C-~S-~M-dead_belowdot", LFUN_UNDERDOT);
 525         kbmap->bind("~C-~S-~M-dead_tie", LFUN_TIE);
 526         kbmap->bind("~C-~S-~M-dead_ogonek", LFUN_OGONEK);
 527 }
 528
 529
 530 // This one is not allowed to use anything on the main form, since that
 531 // one does not exist yet. (Asger)
 532 void LyX::queryUserLyXDir(bool explicit_userdir)
 533 {
 534         // Does user directory exist?
 535         FileInfo fileInfo(user_lyxdir);
 536         if (fileInfo.isOK() && fileInfo.isDir()) {
 537                 first_start = false;
 538                 return;
 539         } else {
 540                 first_start = true;
 541         }
 542
 543         // Nope
 544         // Different wording if the user specifically requested a directory
 545         if (!AskQuestion( explicit_userdir
 546                          ? _("You have specified an invalid LyX directory.")
 547                          : _("You don't have a personal LyX directory.") ,
 548
 549                          _("It is needed to keep your own configuration."),
 550                          _("Should I try to set it up for you (recommended)?"))) {
 551                 lyxerr << _("Running without personal LyX directory.") << endl;
 552                 // No, let's use $HOME instead.
 553                 user_lyxdir = GetEnvPath("HOME");
 554                 return;
 555         }
 556
 557         // Tell the user what is going on
 558         lyxerr << _("LyX: Creating directory ") << user_lyxdir
 559                << _(" and running configure...") << endl;
 560
 561         // Create directory structure
 562         if (!createDirectory(user_lyxdir, 0755)) {
 563                 // Failed, let's use $HOME instead.
 564                 user_lyxdir = GetEnvPath("HOME");
 565                 lyxerr << _("Failed. Will use ") << user_lyxdir
 566                        << _(" instead.") << endl;
 567                 return;
 568         }
 569
 570         // Run configure in user lyx directory
 571         Path p(user_lyxdir);
 572         ::system(AddName(system_lyxdir, "configure").c_str());
 573         lyxerr << "LyX: " << _("Done!") << endl;
 574 }
 575
 576
 577 // Read the rc file `name'
 578 bool LyX::ReadRcFile(string const & name)
 579 {
 580         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 581
 582         string lyxrc_path = LibFileSearch(string(), name);
 583         if (!lyxrc_path.empty()){
 584                 lyxerr[Debug::INIT] << "Found " << name
 585                                     << " in " << lyxrc_path << endl;
 586                 if (lyxrc.read(lyxrc_path) < 0) {
 587                         WriteAlert(_("LyX Warning!"),
 588                                    _("Error while reading ")+lyxrc_path+".",
 589                                    _("Using built-in defaults."));
 590                         return false;
 591                 }
 592                 return true;
 593         } else
 594                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 595         return false;
 596 }
 597
 598
 599 // Read the ui file `name'
 600 void LyX::ReadUIFile(string const & name)
 601 {
 602         enum Uitags {
 603                 ui_menuset = 1,
 604                 ui_toolbar,
 605                 ui_last
 606         };
 607
 608         struct keyword_item uitags[ui_last-1] = {
 609                 { "menuset", ui_menuset },
 610                 { "toolbar", ui_toolbar }
 611         };
 612
 613         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 614
 615         string ui_path = LibFileSearch("ui", name, "ui");
 616
 617         if (ui_path.empty()) {
 618                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 619                 menubackend.defaults();
 620                 return;
 621         }
 622
 623         lyxerr[Debug::INIT] << "Found " << name
 624                             << " in " << ui_path << endl;
 625         LyXLex lex(uitags, ui_last - 1);
 626         lex.setFile(ui_path);
 627         if (!lex.IsOK()) {
 628                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 629                        << endl;
 630         }
 631
 632         if (lyxerr.debugging(Debug::PARSER))
 633                 lex.printTable(lyxerr);
 634
 635         while (lex.IsOK()) {
 636                 switch(lex.lex()) {
 637                 case ui_menuset:
 638                         menubackend.read(lex);
 639                         break;
 640
 641                 case ui_toolbar:
 642                         toolbardefaults.read(lex);
 643                         break;
 644
 645                 default:
 646                         lex.printError("LyX::ReadUFile: "
 647                                        "Unknown menu tag: `$$Token'");
 648                         break;
 649                 }
 650         }
 651 }
 652
 653
 654 // Read the languages file `name'
 655 void LyX::ReadLangugesFile(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 // Set debugging level and report result to user
 684 static
 685 void setDebuggingLevel(string const & dbgLevel)
 686 {
 687         lyxerr << _("Setting debug level to ") <<  dbgLevel << endl;
 688         lyxerr.level(Debug::value(dbgLevel));
 689         Debug::showLevel(lyxerr, lyxerr.level());
 690 }
 691
 692
 693 // Give command line help
 694 static
 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                   "Check the LyX man page for more options.") << endl;
 709 }
 710
 711
 712 bool LyX::easyParse(int * argc, char * argv[])
 713 {
 714         bool gui = true;
 715         int removeargs = 0; // used when options are read
 716         for(int i = 1; i < *argc; ++i) {
 717                 string arg = argv[i];
 718
 719                 // Check for -dbg int
 720                 if (arg == "-dbg") {
 721                         if (i + 1 < *argc) {
 722                                 setDebuggingLevel(argv[i + 1]);
 723                                 removeargs = 2;
 724                         } else {
 725                                 lyxerr << _("List of supported debug flags:")
 726                                        << endl;
 727                                 Debug::showTags(lyxerr);
 728                                 exit(0);
 729                         }
 730                 }
 731                 // Check for "-sysdir"
 732                 else if (arg == "-sysdir") {
 733                         if (i + 1 < *argc) {
 734                                 system_lyxdir = argv[i + 1];
 735                                 removeargs = 2;
 736                         } else {
 737                                 lyxerr << _("Missing directory for -sysdir switch!")
 738                                        << endl;
 739                                 exit(0);
 740                         }
 741                 }
 742                 // Check for "-userdir"
 743                 else if (arg == "-userdir") {
 744                         if (i + 1 < *argc) {
 745                                 user_lyxdir = argv[i + 1];
 746                                 removeargs = 2;
 747                         } else {
 748                                 lyxerr << _("Missing directory for -userdir switch!")
 749                                        << endl;
 750                                 exit(0);
 751                         }
 752                 }
 753                 // Check for --help or -help
 754                 else if (arg == "--help" || arg == "-help") {
 755                         commandLineHelp();
 756                         exit(0);
 757                 }
 758                 // Check for "-nw": No XWindows as for emacs this should
 759                 // give a LyX that could be used in a terminal window.
 760                 //else if (arg == "-nw") {
 761                 //      gui = false;
 762                 //}
 763
 764                 // Check for "-x": Execute commands
 765                 else if (arg == "-x" || arg == "--execute") {
 766                         if (i + 1 < *argc) {
 767                                 batch_command = string(argv[i + 1]);
 768                                 removeargs = 2;
 769                         }
 770                         else
 771                                 lyxerr << _("Missing command string after  -x switch!") << endl;
 772
 773                         // Argh. Setting gui to false segfaults..
 774                         //gui = false;
 775                 }
 776
 777                 else if (arg == "-e" || arg == "--export") {
 778                         if (i + 1 < *argc) {
 779                                 string type(argv[i+1]);
 780                                 removeargs = 2;
 781                                 batch_command = "buffer-export " + type;
 782                                 gui = false;
 783                         } else
 784                                 lyxerr << _("Missing file type [eg latex, "
 785                                             "ps...] after ")
 786                                        << arg << _(" switch!") << endl;
 787                 }
 788                 else if (arg == "--import") {
 789                         if (i + 1 < *argc) {
 790                                 string type(argv[i+1]);
 791                                 string file(argv[i+2]);
 792                                 removeargs = 3;
 793
 794                                 batch_command = "buffer-import " + type + " " + file;
 795                                 lyxerr << "batch_command: "
 796                                        << batch_command << endl;
 797
 798                         } else
 799                                 lyxerr << _("Missing type [eg latex, "
 800                                             "ps...] after ")
 801                                        << arg << _(" switch!") << endl;
 802                 }
 803
 804                 if (removeargs > 0) {
 805                         // Now, remove used arguments by shifting
 806                         // the following ones removeargs places down.
 807                         (*argc) -= removeargs;
 808                         for (int j = i; j < (*argc); ++j)
 809                                 argv[j] = argv[j + removeargs];
 810                         --i; // After shift, check this number again.
 811                         removeargs = 0;
 812                 }
 813
 814         }
 815
 816         return gui;
 817 }
 818
 819
 820 extern "C"
 821 void error_handler(int err_sig)
 822 {
 823         switch (err_sig) {
 824         case SIGHUP:
 825                 lyxerr << "\nlyx: SIGHUP signal caught" << endl;
 826                 break;
 827         case SIGINT:
 828                 // no comments
 829                 break;
 830         case SIGFPE:
 831                 lyxerr << "\nlyx: SIGFPE signal caught" << endl;
 832                 break;
 833         case SIGSEGV:
 834                 lyxerr << "\nlyx: SIGSEGV signal caught" << endl;
 835                 lyxerr <<
 836                         "Sorry, you have found a bug in LyX."
 837                         " If possible, please read 'Known bugs'\n"
 838                         "under the Help menu and then send us "
 839                         "a full bug report. Thanks!" << endl;
 840                 break;
 841         case SIGTERM:
 842                 // no comments
 843                 break;
 844         }
 845
 846         // Deinstall the signal handlers
 847         signal(SIGHUP, SIG_DFL);
 848         signal(SIGINT, SIG_DFL);
 849         signal(SIGFPE, SIG_DFL);
 850         signal(SIGSEGV, SIG_DFL);
 851         signal(SIGTERM, SIG_DFL);
 852
 853         bufferlist.emergencyWriteAll();
 854
 855         lyxerr << "Bye." << endl;
 856         if(err_sig!= SIGHUP &&
 857            (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
 858                 lyx::abort();
 859         exit(0);
 860 }