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