src/lyx_main.C

   1 /**
   2  * \file lyx_main.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alfredo Braunstein
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  * \author John Levon
  10  * \author André Pönitz
  11  *
  12  * Full author contact details are available in file CREDITS.
  13  */
  14
  15 #include <config.h>
  16 #include <version.h>
  17
  18 #include "lyx_main.h"
  19
  20 #include "buffer.h"
  21 #include "buffer_funcs.h"
  22 #include "bufferlist.h"
  23 #include "converter.h"
  24 #include "debug.h"
  25 #include "encoding.h"
  26 #include "errorlist.h"
  27 #include "format.h"
  28 #include "gettext.h"
  29 #include "kbmap.h"
  30 #include "language.h"
  31 #include "lastfiles.h"
  32 #include "LColor.h"
  33 #include "lyxfunc.h"
  34 #include "lyxlex.h"
  35 #include "lyxrc.h"
  36 #include "lyxtextclasslist.h"
  37 #include "lyxserver.h"
  38 #include "MenuBackend.h"
  39 #include "mover.h"
  40 #include "ToolbarBackend.h"
  41
  42 #include "mathed/math_inset.h"
  43
  44 #include "frontends/Alert.h"
  45 #include "frontends/lyx_gui.h"
  46 #include "frontends/LyXView.h"
  47
  48 #include "support/filetools.h"
  49 #include "support/lyxlib.h"
  50 #include "support/os.h"
  51 #include "support/package.h"
  52 #include "support/path.h"
  53
  54 #include <boost/bind.hpp>
  55 #include <boost/filesystem/operations.hpp>
  56
  57 #include <iostream>
  58 #include <csignal>
  59
  60 using lyx::support::AddName;
  61 using lyx::support::AddPath;
  62 using lyx::support::bformat;
  63 using lyx::support::createDirectory;
  64 using lyx::support::createLyXTmpDir;
  65 using lyx::support::FileSearch;
  66 using lyx::support::GetEnv;
  67 using lyx::support::i18nLibFileSearch;
  68 using lyx::support::LibFileSearch;
  69 using lyx::support::package;
  70 using lyx::support::Path;
  71 using lyx::support::prependEnvPath;
  72 using lyx::support::QuoteName;
  73 using lyx::support::rtrim;
  74
  75 namespace os = lyx::support::os;
  76 namespace fs = boost::filesystem;
  77
  78 using std::endl;
  79 using std::string;
  80 using std::vector;
  81
  82 #ifndef CXX_GLOBAL_CSTD
  83 using std::exit;
  84 using std::signal;
  85 using std::system;
  86 #endif
  87
  88
  89 extern void QuitLyX();
  90
  91 extern LyXServer * lyxserver;
  92
  93 // This is the global bufferlist object
  94 BufferList bufferlist;
  95
  96 // convenient to have it here.
  97 boost::scoped_ptr<kb_keymap> toplevel_keymap;
  98
  99 namespace {
 100
 101 // Filled with the command line arguments "foo" of "-sysdir foo" or
 102 // "-userdir foo".
 103 string cl_system_support;
 104 string cl_user_support;
 105
 106
 107 void showFileError(string const & error)
 108 {
 109         Alert::warning(_("Could not read configuration file"),
 110                    bformat(_("Error while reading the configuration file\n%1$s.\n"
 111                      "Please check your installation."), error));
 112         exit(EXIT_FAILURE);
 113 }
 114
 115
 116 void reconfigureUserLyXDir()
 117 {
 118         string const configure_script =
 119                 AddName(package().system_support(), "configure");
 120         string const configure_command =
 121                 "sh " + QuoteName(configure_script);
 122
 123         lyxerr << _("LyX: reconfiguring user directory") << endl;
 124         Path p(package().user_support());
 125         ::system(configure_command.c_str());
 126         lyxerr << "LyX: " << _("Done!") << endl;
 127 }
 128
 129 } // namespace anon
 130
 131
 132 boost::scoped_ptr<LyX> LyX::singleton_;
 133
 134 void LyX::exec(int & argc, char * argv[])
 135 {
 136         BOOST_ASSERT(!singleton_.get());
 137         // We must return from this before launching the gui so that
 138         // other parts of the code can access singleton_ through
 139         // LyX::ref and LyX::cref.
 140         singleton_.reset(new LyX);
 141         // Start the real execution loop.
 142         singleton_->priv_exec(argc, argv);
 143 }
 144
 145
 146 LyX & LyX::ref()
 147 {
 148         BOOST_ASSERT(singleton_.get());
 149         return *singleton_.get();
 150 }
 151
 152
 153 LyX const & LyX::cref()
 154 {
 155         BOOST_ASSERT(singleton_.get());
 156         return *singleton_.get();
 157 }
 158
 159
 160 LyX::LyX()
 161         : first_start(false)
 162 {}
 163
 164
 165 LastFiles & LyX::lastfiles()
 166 {
 167         BOOST_ASSERT(lastfiles_.get());
 168         return *lastfiles_.get();
 169 }
 170
 171
 172 LastFiles const & LyX::lastfiles() const
 173 {
 174         BOOST_ASSERT(lastfiles_.get());
 175         return *lastfiles_.get();
 176 }
 177
 178
 179 void LyX::addLyXView(boost::shared_ptr<LyXView> const & lyxview)
 180 {
 181         views_.push_back(lyxview);
 182 }
 183
 184
 185 Buffer const * const LyX::updateInset(InsetBase const * inset) const
 186 {
 187         if (!inset)
 188                 return 0;
 189
 190         Buffer const * buffer_ptr = 0;
 191         ViewList::const_iterator it = views_.begin();
 192         ViewList::const_iterator const end = views_.end();
 193         for (; it != end; ++it) {
 194                 Buffer const * ptr = (*it)->updateInset(inset);
 195                 if (ptr)
 196                         buffer_ptr = ptr;
 197         }
 198         return buffer_ptr;
 199 }
 200
 201
 202 void LyX::priv_exec(int & argc, char * argv[])
 203 {
 204         // Here we need to parse the command line. At least
 205         // we need to parse for "-dbg" and "-help"
 206         bool const want_gui = easyParse(argc, argv);
 207
 208         lyx::support::init_package(argv[0], cl_system_support, cl_user_support,
 209                                    lyx::support::top_build_dir_is_one_level_up);
 210
 211         if (want_gui)
 212                 lyx_gui::parse_init(argc, argv);
 213
 214         // check for any spurious extra arguments
 215         // other than documents
 216         for (int argi = 1; argi < argc ; ++argi) {
 217                 if (argv[argi][0] == '-') {
 218                         lyxerr << bformat(_("Wrong command line option `%1$s'. Exiting."),
 219                                 argv[argi]) << endl;
 220                         exit(1);
 221                 }
 222         }
 223
 224         // Initialization of LyX (reads lyxrc and more)
 225         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 226         init(want_gui);
 227         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 228
 229         if (want_gui)
 230                 lyx_gui::parse_lyxrc();
 231
 232         initMath();
 233
 234         vector<string> files;
 235
 236         for (int argi = argc - 1; argi >= 1; --argi)
 237                 files.push_back(argv[argi]);
 238
 239         if (first_start)
 240                 files.push_back(i18nLibFileSearch("examples", "splash.lyx"));
 241
 242         // Execute batch commands if available
 243         if (!batch_command.empty()) {
 244
 245                 lyxerr[Debug::INIT] << "About to handle -x '"
 246                        << batch_command << '\'' << endl;
 247
 248                 Buffer * last_loaded = 0;
 249
 250                 vector<string>::const_iterator it = files.begin();
 251                 vector<string>::const_iterator end = files.end();
 252
 253                 for (; it != end; ++it) {
 254                         // get absolute path of file and add ".lyx" to
 255                         // the filename if necessary
 256                         string s = FileSearch(string(), *it, "lyx");
 257                         if (s.empty()) {
 258                                 last_loaded = newFile(*it, string(), true);
 259                         } else {
 260                                 Buffer * buf = bufferlist.newBuffer(s, false);
 261                                 buf->error.connect(boost::bind(&LyX::printError, this, _1));
 262                                 if (loadLyXFile(buf, s))
 263                                         last_loaded = buf;
 264                                 else
 265                                         bufferlist.release(buf);
 266                         }
 267                 }
 268
 269                 // try to dispatch to last loaded buffer first
 270                 if (last_loaded) {
 271                         bool success = false;
 272                         if (last_loaded->dispatch(batch_command, &success)) {
 273                                 QuitLyX();
 274                                 exit(!success);
 275                         }
 276                 }
 277                 files.clear(); // the files are already loaded
 278         }
 279
 280         lyx_gui::start(batch_command, files);
 281 }
 282
 283
 284 /*
 285 Signals and Windows
 286 ===================
 287 The SIGHUP signal does not exist on Windows and does not need to be handled.
 288
 289 Windows handles SIGFPE and SIGSEGV signals as expected.
 290
 291 Cntl+C interrupts (mapped to SIGINT by Windows' POSIX compatability layer)
 292 cause a new thread to be spawned. This may well result in unexpected
 293 behaviour by the single-threaded LyX.
 294
 295 SIGTERM signals will come only from another process actually sending
 296 that signal using 'raise' in Windows' POSIX compatability layer. It will
 297 not come from the general "terminate process" methods that everyone
 298 actually uses (and which can't be trapped). Killing an app 'politely' on
 299 Windows involves first sending a WM_CLOSE message, something that is
 300 caught already by the Qt frontend.
 301
 302 For more information see:
 303
 304 http://aspn.activestate.com/ASPN/Mail/Message/ActiveTcl/2034055
 305 ...signals are mostly useless on Windows for a variety of reasons that are
 306 Windows specific...
 307
 308 'UNIX Application Migration Guide, Chapter 9'
 309 http://msdn.microsoft.com/library/en-us/dnucmg/html/UCMGch09.asp
 310
 311 'How To Terminate an Application "Cleanly" in Win32'
 312 http://support.microsoft.com/default.aspx?scid=kb;en-us;178893
 313 */
 314 extern "C" {
 315
 316 static void error_handler(int err_sig)
 317 {
 318         // Throw away any signals other than the first one received.
 319         static sig_atomic_t handling_error = false;
 320         if (handling_error)
 321                 return;
 322         handling_error = true;
 323
 324         // We have received a signal indicating a fatal error, so
 325         // try and save the data ASAP.
 326         LyX::cref().emergencyCleanup();
 327
 328         // These lyxerr calls may or may not work:
 329
 330         // Signals are asynchronous, so the main program may be in a very
 331         // fragile state when a signal is processed and thus while a signal
 332         // handler function executes.
 333         // In general, therefore, we should avoid performing any
 334         // I/O operations or calling most library and system functions from
 335         // signal handlers.
 336
 337         // This shouldn't matter here, however, as we've already invoked
 338         // emergencyCleanup.
 339         switch (err_sig) {
 340 #ifdef SIGHUP
 341         case SIGHUP:
 342                 lyxerr << "\nlyx: SIGHUP signal caught\nBye." << endl;
 343                 break;
 344 #endif
 345         case SIGFPE:
 346                 lyxerr << "\nlyx: SIGFPE signal caught\nBye." << endl;
 347                 break;
 348         case SIGSEGV:
 349                 lyxerr << "\nlyx: SIGSEGV signal caught\n"
 350                           "Sorry, you have found a bug in LyX. "
 351                           "Please read the bug-reporting instructions "
 352                           "in Help->Introduction and send us a bug report, "
 353                           "if necessary. Thanks !\nBye." << endl;
 354                 break;
 355         case SIGINT:
 356         case SIGTERM:
 357                 // no comments
 358                 break;
 359         }
 360
 361         // Deinstall the signal handlers
 362 #ifdef SIGHUP
 363         signal(SIGHUP, SIG_DFL);
 364 #endif
 365         signal(SIGINT, SIG_DFL);
 366         signal(SIGFPE, SIG_DFL);
 367         signal(SIGSEGV, SIG_DFL);
 368         signal(SIGTERM, SIG_DFL);
 369
 370 #ifdef SIGHUP
 371         if (err_sig == SIGSEGV ||
 372             (err_sig != SIGHUP && !GetEnv("LYXDEBUG").empty()))
 373 #else
 374         if (err_sig == SIGSEGV || !GetEnv("LYXDEBUG").empty())
 375 #endif
 376                 lyx::support::abort();
 377         exit(0);
 378 }
 379
 380 }
 381
 382
 383 void LyX::printError(ErrorItem const & ei)
 384 {
 385         std::cerr << _("LyX: ") << ei.error
 386                   << ':' << ei.description << std::endl;
 387
 388 }
 389
 390
 391 void LyX::init(bool gui)
 392 {
 393 #ifdef SIGHUP
 394         signal(SIGHUP, error_handler);
 395 #endif
 396         signal(SIGFPE, error_handler);
 397         signal(SIGSEGV, error_handler);
 398         signal(SIGINT, error_handler);
 399         signal(SIGTERM, error_handler);
 400         // SIGPIPE can be safely ignored.
 401
 402 #if !defined (USE_POSIX_PACKAGING)
 403         // Add the directory containing the LyX executable to the path
 404         // so that LyX can find things like reLyX.
 405         if (package().build_support().empty())
 406                 prependEnvPath("PATH", package().binary_dir());
 407 #endif
 408
 409         // Check that user LyX directory is ok. We don't do that if
 410         // running in batch mode.
 411         bool reconfigure = false;
 412         if (gui) {
 413                 reconfigure =
 414                         queryUserLyXDir(package().explicit_user_support());
 415         } else {
 416                 first_start = false;
 417         }
 418
 419         // Disable gui when easyparse says so
 420         lyx_gui::use_gui = gui;
 421
 422         lyxrc.tempdir_path = package().temp_dir();
 423         lyxrc.document_path = package().document_dir();
 424
 425         if (lyxrc.template_path.empty()) {
 426                 lyxrc.template_path = AddPath(package().system_support(),
 427                                               "templates");
 428         }
 429
 430         if (lyxrc.lastfiles.empty()) {
 431                 lyxrc.lastfiles = AddName(package().user_support(), "lastfiles");
 432         }
 433
 434         if (lyxrc.roman_font_name.empty())
 435                 lyxrc.roman_font_name = lyx_gui::roman_font_name();
 436         if (lyxrc.sans_font_name.empty())
 437                 lyxrc.sans_font_name = lyx_gui::sans_font_name();
 438         if (lyxrc.typewriter_font_name.empty())
 439                 lyxrc.typewriter_font_name = lyx_gui::typewriter_font_name();
 440
 441         //
 442         // Read configuration files
 443         //
 444
 445         readRcFile("lyxrc.defaults");
 446         system_lyxrc = lyxrc;
 447         system_formats = formats;
 448         system_converters = converters;
 449         system_movers = movers;
 450         system_lcolor = lcolor;
 451
 452         string prefsfile = "preferences";
 453         // back compatibility to lyxs < 1.1.6
 454         if (LibFileSearch(string(), prefsfile).empty())
 455                 prefsfile = "lyxrc";
 456         if (!LibFileSearch(string(), prefsfile).empty())
 457                 readRcFile(prefsfile);
 458
 459         readEncodingsFile("encodings");
 460         readLanguagesFile("languages");
 461
 462         // Load the layouts
 463         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 464         LyXSetStyle();
 465
 466         if (gui) {
 467                 // Set up bindings
 468                 toplevel_keymap.reset(new kb_keymap);
 469                 defaultKeyBindings(toplevel_keymap.get());
 470                 toplevel_keymap->read(lyxrc.bind_file);
 471
 472                 // Read menus
 473                 readUIFile(lyxrc.ui_file);
 474         }
 475
 476         if (lyxerr.debugging(Debug::LYXRC))
 477                 lyxrc.print();
 478
 479         os::cygwin_path_fix(lyxrc.cygwin_path_fix);
 480         prependEnvPath("PATH", lyxrc.path_prefix);
 481
 482         // Having reset the PATH we're now in a position to run configure
 483         // if necessary.
 484         if (reconfigure)
 485                 reconfigureUserLyXDir();
 486
 487         if (fs::is_directory(lyxrc.document_path))
 488                 package().document_dir() = lyxrc.document_path;
 489
 490         package().temp_dir() = createLyXTmpDir(lyxrc.tempdir_path);
 491         if (package().temp_dir().empty()) {
 492                 Alert::error(_("Could not create temporary directory"),
 493                              bformat(_("Could not create a temporary directory in\n"
 494                                        "%1$s. Make sure that this\n"
 495                                        "path exists and is writable and try again."),
 496                                      lyxrc.tempdir_path));
 497                 // createLyXTmpDir() tries sufficiently hard to create a
 498                 // usable temp dir, so the probability to come here is
 499                 // close to zero. We therefore don't try to overcome this
 500                 // problem with e.g. asking the user for a new path and
 501                 // trying again but simply exit.
 502                 exit(EXIT_FAILURE);
 503         }
 504
 505         if (lyxerr.debugging(Debug::INIT)) {
 506                 lyxerr << "LyX tmp dir: `" << package().temp_dir() << '\'' << endl;
 507         }
 508
 509         lyxerr[Debug::INIT] << "Reading lastfiles `"
 510                             << lyxrc.lastfiles << "'..." << endl;
 511         lastfiles_.reset(new LastFiles(lyxrc.lastfiles,
 512                                        lyxrc.check_lastfiles,
 513                                        lyxrc.num_lastfiles));
 514 }
 515
 516
 517 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 518 {
 519         kbmap->bind("Right", FuncRequest(LFUN_RIGHT));
 520         kbmap->bind("Left", FuncRequest(LFUN_LEFT));
 521         kbmap->bind("Up", FuncRequest(LFUN_UP));
 522         kbmap->bind("Down", FuncRequest(LFUN_DOWN));
 523
 524         kbmap->bind("Tab", FuncRequest(LFUN_CELL_FORWARD));
 525         kbmap->bind("ISO_Left_Tab", FuncRequest(LFUN_CELL_FORWARD));
 526
 527         kbmap->bind("Home", FuncRequest(LFUN_HOME));
 528         kbmap->bind("End", FuncRequest(LFUN_END));
 529         kbmap->bind("Prior", FuncRequest(LFUN_PRIOR));
 530         kbmap->bind("Next", FuncRequest(LFUN_NEXT));
 531
 532         kbmap->bind("Return", FuncRequest(LFUN_BREAKPARAGRAPH));
 533         //kbmap->bind("~C-~S-~M-nobreakspace", FuncRequest(LFUN_PROTECTEDSPACE));
 534
 535         kbmap->bind("Delete", FuncRequest(LFUN_DELETE));
 536         kbmap->bind("BackSpace", FuncRequest(LFUN_BACKSPACE));
 537
 538         // kbmap->bindings to enable the use of the numeric keypad
 539         // e.g. Num Lock set
 540         //kbmap->bind("KP_0", FuncRequest(LFUN_SELFINSERT));
 541         //kbmap->bind("KP_Decimal", FuncRequest(LFUN_SELFINSERT));
 542         kbmap->bind("KP_Enter", FuncRequest(LFUN_BREAKPARAGRAPH));
 543         //kbmap->bind("KP_1", FuncRequest(LFUN_SELFINSERT));
 544         //kbmap->bind("KP_2", FuncRequest(LFUN_SELFINSERT));
 545         //kbmap->bind("KP_3", FuncRequest(LFUN_SELFINSERT));
 546         //kbmap->bind("KP_4", FuncRequest(LFUN_SELFINSERT));
 547         //kbmap->bind("KP_5", FuncRequest(LFUN_SELFINSERT));
 548         //kbmap->bind("KP_6", FuncRequest(LFUN_SELFINSERT));
 549         //kbmap->bind("KP_Add", FuncRequest(LFUN_SELFINSERT));
 550         //kbmap->bind("KP_7", FuncRequest(LFUN_SELFINSERT));
 551         //kbmap->bind("KP_8", FuncRequest(LFUN_SELFINSERT));
 552         //kbmap->bind("KP_9", FuncRequest(LFUN_SELFINSERT));
 553         //kbmap->bind("KP_Divide", FuncRequest(LFUN_SELFINSERT));
 554         //kbmap->bind("KP_Multiply", FuncRequest(LFUN_SELFINSERT));
 555         //kbmap->bind("KP_Subtract", FuncRequest(LFUN_SELFINSERT));
 556         kbmap->bind("KP_Right", FuncRequest(LFUN_RIGHT));
 557         kbmap->bind("KP_Left", FuncRequest(LFUN_LEFT));
 558         kbmap->bind("KP_Up", FuncRequest(LFUN_UP));
 559         kbmap->bind("KP_Down", FuncRequest(LFUN_DOWN));
 560         kbmap->bind("KP_Home", FuncRequest(LFUN_HOME));
 561         kbmap->bind("KP_End", FuncRequest(LFUN_END));
 562         kbmap->bind("KP_Prior", FuncRequest(LFUN_PRIOR));
 563         kbmap->bind("KP_Next", FuncRequest(LFUN_NEXT));
 564
 565         kbmap->bind("C-Tab", FuncRequest(LFUN_CELL_SPLIT));
 566         kbmap->bind("S-Tab", FuncRequest(LFUN_CELL_BACKWARD));
 567         kbmap->bind("S-ISO_Left_Tab", FuncRequest(LFUN_CELL_BACKWARD));
 568 }
 569
 570
 571 void LyX::emergencyCleanup() const
 572 {
 573         // what to do about tmpfiles is non-obvious. we would
 574         // like to delete any we find, but our lyxdir might
 575         // contain documents etc. which might be helpful on
 576         // a crash
 577
 578         bufferlist.emergencyWriteAll();
 579         if (lyxserver)
 580                 lyxserver->emergencyCleanup();
 581 }
 582
 583
 584 void LyX::deadKeyBindings(kb_keymap * kbmap)
 585 {
 586         // bindKeyings for transparent handling of deadkeys
 587         // The keysyms are gotten from XFree86 X11R6
 588         kbmap->bind("~C-~S-~M-dead_acute", FuncRequest(LFUN_ACUTE));
 589         kbmap->bind("~C-~S-~M-dead_breve", FuncRequest(LFUN_BREVE));
 590         kbmap->bind("~C-~S-~M-dead_caron", FuncRequest(LFUN_CARON));
 591         kbmap->bind("~C-~S-~M-dead_cedilla", FuncRequest(LFUN_CEDILLA));
 592         kbmap->bind("~C-~S-~M-dead_abovering", FuncRequest(LFUN_CIRCLE));
 593         kbmap->bind("~C-~S-~M-dead_circumflex", FuncRequest(LFUN_CIRCUMFLEX));
 594         kbmap->bind("~C-~S-~M-dead_abovedot", FuncRequest(LFUN_DOT));
 595         kbmap->bind("~C-~S-~M-dead_grave", FuncRequest(LFUN_GRAVE));
 596         kbmap->bind("~C-~S-~M-dead_doubleacute", FuncRequest(LFUN_HUNG_UMLAUT));
 597         kbmap->bind("~C-~S-~M-dead_macron", FuncRequest(LFUN_MACRON));
 598         // nothing with this name
 599         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 600         kbmap->bind("~C-~S-~M-dead_tilde", FuncRequest(LFUN_TILDE));
 601         kbmap->bind("~C-~S-~M-dead_diaeresis", FuncRequest(LFUN_UMLAUT));
 602         // nothing with this name either...
 603         //kbmap->bind("~C-~S-~M-dead_underbar", FuncRequest(LFUN_UNDERBAR));
 604         kbmap->bind("~C-~S-~M-dead_belowdot", FuncRequest(LFUN_UNDERDOT));
 605         kbmap->bind("~C-~S-~M-dead_tie", FuncRequest(LFUN_TIE));
 606         kbmap->bind("~C-~S-~M-dead_ogonek",FuncRequest(LFUN_OGONEK));
 607 }
 608
 609
 610 bool LyX::queryUserLyXDir(bool explicit_userdir)
 611 {
 612         bool reconfigure = false;
 613
 614         // Does user directory exist?
 615         if (fs::is_directory(package().user_support())) {
 616                 first_start = false;
 617                 string const configure_script =
 618                         AddName(package().system_support(), "configure");
 619                 string const userDefaults =
 620                         AddName(package().user_support(), "lyxrc.defaults");
 621                 if (fs::exists(configure_script) &&
 622                     fs::exists(userDefaults) &&
 623                     fs::last_write_time(configure_script)
 624                     < fs::last_write_time(userDefaults)) {
 625                         reconfigure = true;
 626                 }
 627                 return reconfigure;
 628         }
 629
 630         first_start = !explicit_userdir;
 631
 632         // If the user specified explicitly a directory, ask whether
 633         // to create it. If the user says "no", then exit.
 634         if (explicit_userdir &&
 635             !Alert::prompt(
 636                     _("Missing LyX support directory"),
 637                     bformat(_("You have specified a non-existent user "
 638                               "LyX directory, %1$s.\n"
 639                               "It is needed to keep your own configuration."),
 640                             package().user_support()),
 641                     1, 0,
 642                     _("&Create directory."),
 643                     _("&Exit LyX."))) {
 644                 lyxerr << _("No user LyX directory. Exiting.") << endl;
 645                 exit(1);
 646         }
 647
 648         lyxerr << bformat(_("LyX: Creating directory %1$s"),
 649                           package().user_support())
 650                << endl;
 651         reconfigure = true;
 652
 653         if (!createDirectory(package().user_support(), 0755)) {
 654                 // Failed, so let's exit.
 655                 lyxerr << _("Failed to create directory. Exiting.")
 656                        << endl;
 657                 exit(1);
 658         }
 659
 660         return reconfigure;
 661 }
 662
 663
 664 void LyX::readRcFile(string const & name)
 665 {
 666         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 667
 668         string const lyxrc_path = LibFileSearch(string(), name);
 669         if (!lyxrc_path.empty()) {
 670
 671                 lyxerr[Debug::INIT] << "Found " << name
 672                                     << " in " << lyxrc_path << endl;
 673
 674                 if (lyxrc.read(lyxrc_path) >= 0)
 675                         return;
 676         }
 677
 678         showFileError(name);
 679 }
 680
 681
 682 // Read the ui file `name'
 683 void LyX::readUIFile(string const & name)
 684 {
 685         enum Uitags {
 686                 ui_menuset = 1,
 687                 ui_toolbar,
 688                 ui_toolbars,
 689                 ui_include,
 690                 ui_last
 691         };
 692
 693         struct keyword_item uitags[ui_last - 1] = {
 694                 { "include", ui_include },
 695                 { "menuset", ui_menuset },
 696                 { "toolbar", ui_toolbar },
 697                 { "toolbars", ui_toolbars }
 698         };
 699
 700         // Ensure that a file is read only once (prevents include loops)
 701         static std::list<string> uifiles;
 702         std::list<string>::const_iterator it  = uifiles.begin();
 703         std::list<string>::const_iterator end = uifiles.end();
 704         it = std::find(it, end, name);
 705         if (it != end) {
 706                 lyxerr[Debug::INIT] << "UI file '" << name
 707                                     << "' has been read already. "
 708                                     << "Is this an include loop?"
 709                                     << endl;
 710                 return;
 711         }
 712
 713         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 714
 715         string const ui_path = LibFileSearch("ui", name, "ui");
 716
 717         if (ui_path.empty()) {
 718                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 719                 showFileError(name);
 720                 return;
 721         }
 722         uifiles.push_back(name);
 723
 724         lyxerr[Debug::INIT] << "Found " << name
 725                             << " in " << ui_path << endl;
 726         LyXLex lex(uitags, ui_last - 1);
 727         lex.setFile(ui_path);
 728         if (!lex.isOK()) {
 729                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 730                        << endl;
 731         }
 732
 733         if (lyxerr.debugging(Debug::PARSER))
 734                 lex.printTable(lyxerr);
 735
 736         while (lex.isOK()) {
 737                 switch (lex.lex()) {
 738                 case ui_include: {
 739                         lex.next(true);
 740                         string const file = lex.getString();
 741                         readUIFile(file);
 742                         break;
 743                 }
 744                 case ui_menuset:
 745                         menubackend.read(lex);
 746                         break;
 747
 748                 case ui_toolbar:
 749                         toolbarbackend.read(lex);
 750                         break;
 751
 752                 case ui_toolbars:
 753                         toolbarbackend.readToolbars(lex);
 754                         break;
 755
 756                 default:
 757                         if (!rtrim(lex.getString()).empty())
 758                                 lex.printError("LyX::ReadUIFile: "
 759                                                "Unknown menu tag: `$$Token'");
 760                         break;
 761                 }
 762         }
 763 }
 764
 765
 766 // Read the languages file `name'
 767 void LyX::readLanguagesFile(string const & name)
 768 {
 769         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 770
 771         string const lang_path = LibFileSearch(string(), name);
 772         if (lang_path.empty()) {
 773                 showFileError(name);
 774                 return;
 775         }
 776         languages.read(lang_path);
 777 }
 778
 779
 780 // Read the encodings file `name'
 781 void LyX::readEncodingsFile(string const & name)
 782 {
 783         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 784
 785         string const enc_path = LibFileSearch(string(), name);
 786         if (enc_path.empty()) {
 787                 showFileError(name);
 788                 return;
 789         }
 790         encodings.read(enc_path);
 791 }
 792
 793
 794 namespace {
 795
 796 bool is_gui = true;
 797 string batch;
 798
 799 /// return the the number of arguments consumed
 800 typedef boost::function<int(string const &, string const &)> cmd_helper;
 801
 802 int parse_dbg(string const & arg, string const &)
 803 {
 804         if (arg.empty()) {
 805                 lyxerr << _("List of supported debug flags:") << endl;
 806                 Debug::showTags(lyxerr);
 807                 exit(0);
 808         }
 809         lyxerr << bformat(_("Setting debug level to %1$s"), arg) << endl;
 810
 811         lyxerr.level(Debug::value(arg));
 812         Debug::showLevel(lyxerr, lyxerr.level());
 813         return 1;
 814 }
 815
 816
 817 int parse_help(string const &, string const &)
 818 {
 819         lyxerr <<
 820                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 821                   "Command line switches (case sensitive):\n"
 822                   "\t-help              summarize LyX usage\n"
 823                   "\t-userdir dir       try to set user directory to dir\n"
 824                   "\t-sysdir dir        try to set system directory to dir\n"
 825                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 826                   "\t-dbg feature[,feature]...\n"
 827                   "                  select the features to debug.\n"
 828                   "                  Type `lyx -dbg' to see the list of features\n"
 829                   "\t-x [--execute] command\n"
 830                   "                  where command is a lyx command.\n"
 831                   "\t-e [--export] fmt\n"
 832                   "                  where fmt is the export format of choice.\n"
 833                   "\t-i [--import] fmt file.xxx\n"
 834                   "                  where fmt is the import format of choice\n"
 835                   "                  and file.xxx is the file to be imported.\n"
 836                   "\t-version        summarize version and build info\n"
 837                   "Check the LyX man page for more details.") << endl;
 838         exit(0);
 839         return 0;
 840 }
 841
 842 int parse_version(string const &, string const &)
 843 {
 844         lyxerr << "LyX " << lyx_version
 845                << " of " << lyx_release_date << endl;
 846         lyxerr << "Built on " << __DATE__ << ", " << __TIME__ << endl;
 847
 848         lyxerr << lyx_version_info << endl;
 849         exit(0);
 850         return 0;
 851 }
 852
 853 int parse_sysdir(string const & arg, string const &)
 854 {
 855         if (arg.empty()) {
 856                 lyxerr << _("Missing directory for -sysdir switch") << endl;
 857                 exit(1);
 858         }
 859         cl_system_support = arg;
 860         return 1;
 861 }
 862
 863 int parse_userdir(string const & arg, string const &)
 864 {
 865         if (arg.empty()) {
 866                 lyxerr << _("Missing directory for -userdir switch") << endl;
 867                 exit(1);
 868         }
 869         cl_user_support = arg;
 870         return 1;
 871 }
 872
 873 int parse_execute(string const & arg, string const &)
 874 {
 875         if (arg.empty()) {
 876                 lyxerr << _("Missing command string after --execute switch") << endl;
 877                 exit(1);
 878         }
 879         batch = arg;
 880         // Argh. Setting gui to false segfaults..
 881         // FIXME: when ? how ?
 882         // is_gui = false;
 883         return 1;
 884 }
 885
 886 int parse_export(string const & type, string const &)
 887 {
 888         if (type.empty()) {
 889                 lyxerr << _("Missing file type [eg latex, ps...] after "
 890                         "--export switch") << endl;
 891                 exit(1);
 892         }
 893         batch = "buffer-export " + type;
 894         is_gui = false;
 895         return 1;
 896 }
 897
 898 int parse_import(string const & type, string const & file)
 899 {
 900         if (type.empty()) {
 901                 lyxerr << _("Missing file type [eg latex, ps...] after "
 902                         "--import switch") << endl;
 903                 exit(1);
 904         }
 905         if (file.empty()) {
 906                 lyxerr << _("Missing filename for --import") << endl;
 907                 exit(1);
 908         }
 909
 910         batch = "buffer-import " + type + ' ' + file;
 911         return 2;
 912 }
 913
 914 } // namespace anon
 915
 916
 917 bool LyX::easyParse(int & argc, char * argv[])
 918 {
 919         std::map<string, cmd_helper> cmdmap;
 920
 921         cmdmap["-dbg"] = parse_dbg;
 922         cmdmap["-help"] = parse_help;
 923         cmdmap["--help"] = parse_help;
 924         cmdmap["-version"] = parse_version;
 925         cmdmap["--version"] = parse_version;
 926         cmdmap["-sysdir"] = parse_sysdir;
 927         cmdmap["-userdir"] = parse_userdir;
 928         cmdmap["-x"] = parse_execute;
 929         cmdmap["--execute"] = parse_execute;
 930         cmdmap["-e"] = parse_export;
 931         cmdmap["--export"] = parse_export;
 932         cmdmap["-i"] = parse_import;
 933         cmdmap["--import"] = parse_import;
 934
 935         for (int i = 1; i < argc; ++i) {
 936                 std::map<string, cmd_helper>::const_iterator it
 937                         = cmdmap.find(argv[i]);
 938
 939                 // don't complain if not found - may be parsed later
 940                 if (it == cmdmap.end())
 941                         continue;
 942
 943                 string arg((i + 1 < argc) ? argv[i + 1] : "");
 944                 string arg2((i + 2 < argc) ? argv[i + 2] : "");
 945
 946                 int const remove = 1 + it->second(arg, arg2);
 947
 948                 // Now, remove used arguments by shifting
 949                 // the following ones remove places down.
 950                 argc -= remove;
 951                 for (int j = i; j < argc; ++j)
 952                         argv[j] = argv[j + remove];
 953                 --i;
 954         }
 955
 956         batch_command = batch;
 957
 958         return is_gui;
 959 }