src/LyX.cpp

   1 /**
   2  * \file LyX.cpp
   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.h"
  19
  20 #include "AppleSpellChecker.h"
  21 #include "AspellChecker.h"
  22 #include "Buffer.h"
  23 #include "BufferList.h"
  24 #include "CmdDef.h"
  25 #include "ColorSet.h"
  26 #include "ConverterCache.h"
  27 #include "Converter.h"
  28 #include "CutAndPaste.h"
  29 #include "EnchantChecker.h"
  30 #include "Encoding.h"
  31 #include "ErrorList.h"
  32 #include "Format.h"
  33 #include "FuncStatus.h"
  34 #include "HunspellChecker.h"
  35 #include "KeyMap.h"
  36 #include "Language.h"
  37 #include "LayoutFile.h"
  38 #include "Lexer.h"
  39 #include "LyX.h"
  40 #include "LyXAction.h"
  41 #include "LyXRC.h"
  42 #include "ModuleList.h"
  43 #include "Mover.h"
  44 #include "Server.h"
  45 #include "ServerSocket.h"
  46 #include "Session.h"
  47
  48 #include "frontends/alert.h"
  49 #include "frontends/Application.h"
  50
  51 #include "graphics/Previews.h"
  52
  53 #include "support/lassert.h"
  54 #include "support/debug.h"
  55 #include "support/environment.h"
  56 #include "support/ExceptionMessage.h"
  57 #include "support/filetools.h"
  58 #include "support/gettext.h"
  59 #include "support/lstrings.h"
  60 #include "support/Messages.h"
  61 #include "support/os.h"
  62 #include "support/Package.h"
  63 #include "support/Path.h"
  64 #include "support/Systemcall.h"
  65
  66 #include "support/bind.h"
  67 #include <boost/scoped_ptr.hpp>
  68
  69 #include <algorithm>
  70 #include <iostream>
  71 #include <csignal>
  72 #include <map>
  73 #include <stdlib.h>
  74 #include <string>
  75 #include <vector>
  76
  77 using namespace std;
  78 using namespace lyx::support;
  79
  80 namespace lyx {
  81
  82 namespace Alert = frontend::Alert;
  83 namespace os = support::os;
  84
  85
  86
  87 // Are we using the GUI at all?  We default to true and this is changed
  88 // to false when the export feature is used.
  89
  90 bool use_gui = true;
  91
  92
  93 // Tell what files can be silently overwritten during batch export.
  94 // Possible values are: NO_FILES, MAIN_FILE, ALL_FILES, UNSPECIFIED.
  95 // Unless specified on command line (through the -f switch) or through the
  96 // environment variable LYX_FORCE_OVERWRITE, the default will be MAIN_FILE.
  97
  98 OverwriteFiles force_overwrite = UNSPECIFIED;
  99
 100
 101 namespace {
 102
 103 // Filled with the command line arguments "foo" of "-sysdir foo" or
 104 // "-userdir foo".
 105 string cl_system_support;
 106 string cl_user_support;
 107
 108 string geometryArg;
 109
 110 LyX * singleton_ = 0;
 111
 112 void showFileError(string const & error)
 113 {
 114         Alert::warning(_("Could not read configuration file"),
 115                        bformat(_("Error while reading the configuration file\n%1$s.\n"
 116                            "Please check your installation."), from_utf8(error)));
 117 }
 118
 119
 120 void reconfigureUserLyXDir()
 121 {
 122         string const configure_command = package().configure_command();
 123
 124         lyxerr << to_utf8(_("LyX: reconfiguring user directory")) << endl;
 125         PathChanger p(package().user_support());
 126         Systemcall one;
 127         one.startscript(Systemcall::Wait, configure_command);
 128         lyxerr << "LyX: " << to_utf8(_("Done!")) << endl;
 129 }
 130
 131 } // namespace anon
 132
 133 /// The main application class private implementation.
 134 struct LyX::Impl
 135 {
 136         Impl() : spell_checker_(0), apple_spell_checker_(0), aspell_checker_(0), enchant_checker_(0), hunspell_checker_(0)
 137         {
 138                 // Set the default User Interface language as soon as possible.
 139                 // The language used will be derived from the environment
 140                 // variables.
 141                 messages_["GUI"] = Messages();
 142         }
 143
 144         ~Impl()
 145         {
 146                 delete apple_spell_checker_;
 147                 delete aspell_checker_;
 148                 delete enchant_checker_;
 149                 delete hunspell_checker_;
 150         }
 151
 152         ///
 153         BufferList buffer_list_;
 154         ///
 155         KeyMap toplevel_keymap_;
 156         ///
 157         CmdDef toplevel_cmddef_;
 158         ///
 159         boost::scoped_ptr<Server> lyx_server_;
 160         ///
 161         boost::scoped_ptr<ServerSocket> lyx_socket_;
 162         ///
 163         boost::scoped_ptr<frontend::Application> application_;
 164         /// lyx session, containing lastfiles, lastfilepos, and lastopened
 165         boost::scoped_ptr<Session> session_;
 166
 167         /// Files to load at start.
 168         vector<string> files_to_load_;
 169
 170         /// The messages translators.
 171         map<string, Messages> messages_;
 172
 173         /// The file converters.
 174         Converters converters_;
 175
 176         // The system converters copy after reading lyxrc.defaults.
 177         Converters system_converters_;
 178
 179         ///
 180         Movers movers_;
 181         ///
 182         Movers system_movers_;
 183
 184         /// has this user started lyx for the first time?
 185         bool first_start;
 186         /// the parsed command line batch command if any
 187         vector<string> batch_commands;
 188
 189         ///
 190         graphics::Previews preview_;
 191         ///
 192         SpellChecker * spell_checker_;
 193         ///
 194         SpellChecker * apple_spell_checker_;
 195         ///
 196         SpellChecker * aspell_checker_;
 197         ///
 198         SpellChecker * enchant_checker_;
 199         ///
 200         SpellChecker * hunspell_checker_;
 201 };
 202
 203 ///
 204 frontend::Application * theApp()
 205 {
 206         if (singleton_)
 207                 return singleton_->pimpl_->application_.get();
 208         else
 209                 return 0;
 210 }
 211
 212
 213 LyX::~LyX()
 214 {
 215         delete pimpl_;
 216         singleton_ = 0;
 217 }
 218
 219
 220 void lyx_exit(int exit_code)
 221 {
 222         if (exit_code)
 223                 // Something wrong happened so better save everything, just in
 224                 // case.
 225                 emergencyCleanup();
 226
 227 #ifndef NDEBUG
 228         // Properly crash in debug mode in order to get a useful backtrace.
 229         abort();
 230 #endif
 231
 232         // In release mode, try to exit gracefully.
 233         if (theApp())
 234                 theApp()->exit(exit_code);
 235         else
 236                 exit(exit_code);
 237 }
 238
 239
 240 LyX::LyX()
 241         : first_start(false)
 242 {
 243         singleton_ = this;
 244         pimpl_ = new Impl;
 245 }
 246
 247
 248 Messages & LyX::messages(string const & language)
 249 {
 250         map<string, Messages>::iterator it = pimpl_->messages_.find(language);
 251
 252         if (it != pimpl_->messages_.end())
 253                 return it->second;
 254
 255         pair<map<string, Messages>::iterator, bool> result =
 256                         pimpl_->messages_.insert(make_pair(language, Messages(language)));
 257
 258         LASSERT(result.second, /**/);
 259         return result.first->second;
 260 }
 261
 262
 263 void setRcGuiLanguage()
 264 {
 265         LASSERT(singleton_, /**/);
 266         if (lyxrc.gui_language == "auto")
 267                 return;
 268         Language const * language = languages.getLanguage(lyxrc.gui_language);
 269         if (language) {
 270                 LYXERR(Debug::LOCALE, "Setting LANGUAGE to " << language->code());
 271                 if (!setEnv("LANGUAGE", language->code()))
 272                         LYXERR(Debug::LOCALE, "\t... failed!");
 273         }
 274         LYXERR(Debug::LOCALE, "Setting LC_ALL to en_US");
 275         if (!setEnv("LC_ALL", "en_US"))
 276                 LYXERR(Debug::LOCALE, "\t... failed!");
 277         Messages::init();
 278         singleton_->pimpl_->messages_["GUI"] = Messages();
 279 }
 280
 281
 282 int LyX::exec(int & argc, char * argv[])
 283 {
 284         // Minimal setting of locale before parsing command line
 285         try {
 286                 init_package(os::utf8_argv(0), string(), string(),
 287                         top_build_dir_is_one_level_up);
 288         } catch (ExceptionMessage const & message) {
 289                 LYXERR(Debug::LOCALE, message.title_ + ", " + message.details_);
 290         }
 291         // FIXME: This breaks out of source build under Windows.
 292         locale_init();
 293
 294         // Here we need to parse the command line. At least
 295         // we need to parse for "-dbg" and "-help"
 296         easyParse(argc, argv);
 297
 298         try {
 299                 init_package(os::utf8_argv(0),
 300                         cl_system_support, cl_user_support,
 301                         top_build_dir_is_one_level_up);
 302         } catch (ExceptionMessage const & message) {
 303                 if (message.type_ == ErrorException) {
 304                         Alert::error(message.title_, message.details_);
 305                         lyx_exit(1);
 306                 } else if (message.type_ == WarningException) {
 307                         Alert::warning(message.title_, message.details_);
 308                 }
 309         }
 310
 311         // Reinit the messages machinery in case package() knows
 312         // something interesting about the locale directory.
 313         Messages::init();
 314
 315         if (!use_gui) {
 316                 // FIXME: create a ConsoleApplication
 317                 int exit_status = init(argc, argv);
 318                 if (exit_status) {
 319                         prepareExit();
 320                         return exit_status;
 321                 }
 322
 323                 // this is correct, since return values are inverted.
 324                 exit_status = !loadFiles();
 325
 326                 if (pimpl_->batch_commands.empty() || pimpl_->buffer_list_.empty()) {
 327                         prepareExit();
 328                         return exit_status;
 329                 }
 330
 331                 BufferList::iterator begin = pimpl_->buffer_list_.begin();
 332
 333                 bool final_success = false;
 334                 for (BufferList::iterator I = begin; I != pimpl_->buffer_list_.end(); ++I) {
 335                         Buffer * buf = *I;
 336                         if (buf != buf->masterBuffer())
 337                                 continue;
 338                         vector<string>::const_iterator bcit  = pimpl_->batch_commands.begin();
 339                         vector<string>::const_iterator bcend = pimpl_->batch_commands.end();
 340                         DispatchResult dr;
 341                         for (; bcit != bcend; bcit++) {
 342                                 LYXERR(Debug::ACTION, "Buffer::dispatch: cmd: " << *bcit);
 343                                 buf->dispatch(*bcit, dr);
 344                                 final_success |= !dr.error();
 345                         }
 346                 }
 347                 prepareExit();
 348                 return !final_success;
 349         }
 350
 351         // Let the frontend parse and remove all arguments that it knows
 352         pimpl_->application_.reset(createApplication(argc, argv));
 353
 354         // Reestablish our defaults, as Qt overwrites them
 355         // after createApplication()
 356         locale_init();
 357
 358         // Parse and remove all known arguments in the LyX singleton
 359         // Give an error for all remaining ones.
 360         int exit_status = init(argc, argv);
 361         if (exit_status) {
 362                 // Kill the application object before exiting.
 363                 pimpl_->application_.reset();
 364                 use_gui = false;
 365                 prepareExit();
 366                 return exit_status;
 367         }
 368
 369         // FIXME
 370         /* Create a CoreApplication class that will provide the main event loop
 371         * and the socket callback registering. With Qt4, only QtCore
 372         * library would be needed.
 373         * When this is done, a server_mode could be created and the following two
 374         * line would be moved out from here.
 375         */
 376         // Note: socket callback must be registered after init(argc, argv)
 377         // such that package().temp_dir() is properly initialized.
 378         pimpl_->lyx_server_.reset(new Server(lyxrc.lyxpipes));
 379         pimpl_->lyx_socket_.reset(new ServerSocket(
 380                         FileName(package().temp_dir().absFileName() + "/lyxsocket")));
 381
 382         // Start the real execution loop.
 383         exit_status = pimpl_->application_->exec();
 384
 385         prepareExit();
 386
 387         return exit_status;
 388 }
 389
 390
 391 void LyX::prepareExit()
 392 {
 393         // Clear the clipboard and selection stack:
 394         cap::clearCutStack();
 395         cap::clearSelection();
 396
 397         // Write the index file of the converter cache
 398         ConverterCache::get().writeIndex();
 399
 400         // close buffers first
 401         pimpl_->buffer_list_.closeAll();
 402
 403         // register session changes and shutdown server and socket
 404         if (use_gui) {
 405                 if (pimpl_->session_)
 406                         pimpl_->session_->writeFile();
 407                 pimpl_->session_.reset();
 408                 pimpl_->lyx_server_.reset();
 409                 pimpl_->lyx_socket_.reset();
 410         }
 411
 412         // do any other cleanup procedures now
 413         if (package().temp_dir() != package().system_temp_dir()) {
 414                 string const abs_tmpdir = package().temp_dir().absFileName();
 415                 if (!contains(package().temp_dir().absFileName(), "lyx_tmpdir")) {
 416                         docstring const msg =
 417                                 bformat(_("%1$s does not appear like a LyX created temporary directory."),
 418                                 from_utf8(abs_tmpdir));
 419                         Alert::warning(_("Cannot remove temporary directory"), msg);
 420                 } else {
 421                         LYXERR(Debug::INFO, "Deleting tmp dir "
 422                                 << package().temp_dir().absFileName());
 423                         if (!package().temp_dir().destroyDirectory()) {
 424                                 docstring const msg =
 425                                         bformat(_("Unable to remove the temporary directory %1$s"),
 426                                         from_utf8(package().temp_dir().absFileName()));
 427                                 Alert::warning(_("Unable to remove temporary directory"), msg);
 428                         }
 429                 }
 430         }
 431
 432         // Kill the application object before exiting. This avoids crashes
 433         // when exiting on Linux.
 434         if (pimpl_->application_)
 435                 pimpl_->application_.reset();
 436 }
 437
 438
 439 void LyX::earlyExit(int status)
 440 {
 441         LASSERT(pimpl_->application_.get(), /**/);
 442         // LyX::pimpl_::application_ is not initialised at this
 443         // point so it's safe to just exit after some cleanup.
 444         prepareExit();
 445         exit(status);
 446 }
 447
 448
 449 int LyX::init(int & argc, char * argv[])
 450 {
 451         // check for any spurious extra arguments
 452         // other than documents
 453         for (int argi = 1; argi < argc ; ++argi) {
 454                 if (argv[argi][0] == '-') {
 455                         lyxerr << to_utf8(
 456                                 bformat(_("Wrong command line option `%1$s'. Exiting."),
 457                                 from_utf8(os::utf8_argv(argi)))) << endl;
 458                         return EXIT_FAILURE;
 459                 }
 460         }
 461
 462         // Initialization of LyX (reads lyxrc and more)
 463         LYXERR(Debug::INIT, "Initializing LyX::init...");
 464         bool success = init();
 465         LYXERR(Debug::INIT, "Initializing LyX::init...done");
 466         if (!success)
 467                 return EXIT_FAILURE;
 468
 469         // Remaining arguments are assumed to be files to load.
 470         for (int argi = 1; argi < argc; ++argi)
 471                 pimpl_->files_to_load_.push_back(os::utf8_argv(argi));
 472
 473         if (first_start) {
 474                 pimpl_->files_to_load_.push_back(
 475                         i18nLibFileSearch("examples", "splash.lyx").absFileName());
 476         }
 477
 478         return EXIT_SUCCESS;
 479 }
 480
 481
 482 bool LyX::loadFiles()
 483 {
 484         LASSERT(!use_gui, /**/);
 485         bool success = true;
 486         vector<string>::const_iterator it = pimpl_->files_to_load_.begin();
 487         vector<string>::const_iterator end = pimpl_->files_to_load_.end();
 488
 489         for (; it != end; ++it) {
 490                 // get absolute path of file and add ".lyx" to
 491                 // the filename if necessary
 492                 FileName fname = fileSearch(string(), os::internal_path(*it), "lyx",
 493                         may_not_exist);
 494
 495                 if (fname.empty())
 496                         continue;
 497
 498                 Buffer * buf = pimpl_->buffer_list_.newBuffer(fname.absFileName(), false);
 499                 if (buf->loadLyXFile(fname)) {
 500                         ErrorList const & el = buf->errorList("Parse");
 501                         if (!el.empty())
 502                                 for_each(el.begin(), el.end(),
 503                                 bind(&LyX::printError, this, _1));
 504                 }
 505                 else {
 506                         pimpl_->buffer_list_.release(buf);
 507                         success = false;
 508                 }
 509         }
 510         return success;
 511 }
 512
 513
 514 void execBatchCommands()
 515 {
 516         LASSERT(singleton_, /**/);
 517         singleton_->execCommands();
 518 }
 519
 520
 521 void LyX::execCommands()
 522 {
 523         // The advantage of doing this here is that the event loop
 524         // is already started. So any need for interaction will be
 525         // aknowledged.
 526
 527         // if reconfiguration is needed.
 528         if (LayoutFileList::get().empty()) {
 529                 switch (Alert::prompt(
 530                         _("No textclass is found"),
 531                         _("LyX will only have minimal functionality because no textclasses "
 532                                 "have been found. You can either try to reconfigure LyX normally, "
 533                                 "try to reconfigure using only the defaults, or continue."),
 534                         0, 2,
 535                         _("&Reconfigure"),
 536                         _("&Use Defaults"),
 537                         _("&Continue")))
 538                 {
 539                 case 0:
 540                         // regular reconfigure
 541                         lyx::dispatch(FuncRequest(LFUN_RECONFIGURE, ""));
 542                         break;
 543                 case 1:
 544                         // reconfigure --without-latex-config
 545                         lyx::dispatch(FuncRequest(LFUN_RECONFIGURE,
 546                                 " --without-latex-config"));
 547                         break;
 548                 default:
 549                         break;
 550                 }
 551         }
 552
 553         // create the first main window
 554         lyx::dispatch(FuncRequest(LFUN_WINDOW_NEW, geometryArg));
 555
 556         if (!pimpl_->files_to_load_.empty()) {
 557                 // if some files were specified at command-line we assume that the
 558                 // user wants to edit *these* files and not to restore the session.
 559                 for (size_t i = 0; i != pimpl_->files_to_load_.size(); ++i) {
 560                         lyx::dispatch(
 561                                 FuncRequest(LFUN_FILE_OPEN, pimpl_->files_to_load_[i]));
 562                 }
 563                 // clear this list to save a few bytes of RAM
 564                 pimpl_->files_to_load_.clear();
 565         } else
 566                 pimpl_->application_->restoreGuiSession();
 567
 568         // Execute batch commands if available
 569         if (pimpl_->batch_commands.empty())
 570                 return;
 571
 572         vector<string>::const_iterator bcit  = pimpl_->batch_commands.begin();
 573         vector<string>::const_iterator bcend = pimpl_->batch_commands.end();
 574         for (; bcit != bcend; bcit++) {
 575                 LYXERR(Debug::INIT, "About to handle -x '" << *bcit << '\'');
 576                 lyx::dispatch(lyxaction.lookupFunc(*bcit));
 577         }
 578 }
 579
 580
 581 /*
 582 Signals and Windows
 583 ===================
 584 The SIGHUP signal does not exist on Windows and does not need to be handled.
 585
 586 Windows handles SIGFPE and SIGSEGV signals as expected.
 587
 588 Ctrl+C interrupts (mapped to SIGINT by Windows' POSIX compatability layer)
 589 cause a new thread to be spawned. This may well result in unexpected
 590 behaviour by the single-threaded LyX.
 591
 592 SIGTERM signals will come only from another process actually sending
 593 that signal using 'raise' in Windows' POSIX compatability layer. It will
 594 not come from the general "terminate process" methods that everyone
 595 actually uses (and which can't be trapped). Killing an app 'politely' on
 596 Windows involves first sending a WM_CLOSE message, something that is
 597 caught already by the Qt frontend.
 598
 599 For more information see:
 600
 601 http://aspn.activestate.com/ASPN/Mail/Message/ActiveTcl/2034055
 602 ...signals are mostly useless on Windows for a variety of reasons that are
 603 Windows specific...
 604
 605 'UNIX Application Migration Guide, Chapter 9'
 606 http://msdn.microsoft.com/library/en-us/dnucmg/html/UCMGch09.asp
 607
 608 'How To Terminate an Application "Cleanly" in Win32'
 609 http://support.microsoft.com/default.aspx?scid=kb;en-us;178893
 610 */
 611 extern "C" {
 612
 613 static void error_handler(int err_sig)
 614 {
 615         // Throw away any signals other than the first one received.
 616         static sig_atomic_t handling_error = false;
 617         if (handling_error)
 618                 return;
 619         handling_error = true;
 620
 621         // We have received a signal indicating a fatal error, so
 622         // try and save the data ASAP.
 623         emergencyCleanup();
 624
 625         // These lyxerr calls may or may not work:
 626
 627         // Signals are asynchronous, so the main program may be in a very
 628         // fragile state when a signal is processed and thus while a signal
 629         // handler function executes.
 630         // In general, therefore, we should avoid performing any
 631         // I/O operations or calling most library and system functions from
 632         // signal handlers.
 633
 634         // This shouldn't matter here, however, as we've already invoked
 635         // emergencyCleanup.
 636         docstring msg;
 637         switch (err_sig) {
 638 #ifdef SIGHUP
 639         case SIGHUP:
 640                 msg = _("SIGHUP signal caught!\nBye.");
 641                 break;
 642 #endif
 643         case SIGFPE:
 644                 msg = _("SIGFPE signal caught!\nBye.");
 645                 break;
 646         case SIGSEGV:
 647                 msg = _("SIGSEGV signal caught!\n"
 648                           "Sorry, you have found a bug in LyX, "
 649                           "hope you have not lost any data.\n"
 650                           "Please read the bug-reporting instructions "
 651                           "in 'Help->Introduction' and send us a bug report, "
 652                           "if necessary. Thanks !\nBye.");
 653                 break;
 654         case SIGINT:
 655         case SIGTERM:
 656                 // no comments
 657                 break;
 658         }
 659
 660         if (!msg.empty()) {
 661                 lyxerr << "\nlyx: " << msg << endl;
 662                 // try to make a GUI message
 663                 Alert::error(_("LyX crashed!"), msg);
 664         }
 665
 666         // Deinstall the signal handlers
 667 #ifdef SIGHUP
 668         signal(SIGHUP, SIG_DFL);
 669 #endif
 670         signal(SIGINT, SIG_DFL);
 671         signal(SIGFPE, SIG_DFL);
 672         signal(SIGSEGV, SIG_DFL);
 673         signal(SIGTERM, SIG_DFL);
 674
 675 #ifdef SIGHUP
 676         if (err_sig == SIGSEGV ||
 677                 (err_sig != SIGHUP && !getEnv("LYXDEBUG").empty())) {
 678 #else
 679         if (err_sig == SIGSEGV || !getEnv("LYXDEBUG").empty()) {
 680 #endif
 681 #ifdef _MSC_VER
 682                 // with abort() it crashes again.
 683                 exit(err_sig);
 684 #else
 685                 abort();
 686 #endif
 687         }
 688
 689         exit(0);
 690 }
 691
 692 }
 693
 694
 695 void LyX::printError(ErrorItem const & ei)
 696 {
 697         docstring tmp = _("LyX: ") + ei.error + char_type(':')
 698                 + ei.description;
 699         cerr << to_utf8(tmp) << endl;
 700 }
 701
 702
 703 bool LyX::init()
 704 {
 705 #ifdef SIGHUP
 706         signal(SIGHUP, error_handler);
 707 #endif
 708         signal(SIGFPE, error_handler);
 709         signal(SIGSEGV, error_handler);
 710         signal(SIGINT, error_handler);
 711         signal(SIGTERM, error_handler);
 712         // SIGPIPE can be safely ignored.
 713
 714         lyxrc.tempdir_path = package().temp_dir().absFileName();
 715         lyxrc.document_path = package().document_dir().absFileName();
 716
 717         if (lyxrc.example_path.empty()) {
 718                 lyxrc.example_path = addPath(package().system_support().absFileName(),
 719                                               "examples");
 720         }
 721         if (lyxrc.template_path.empty()) {
 722                 lyxrc.template_path = addPath(package().system_support().absFileName(),
 723                                               "templates");
 724         }
 725
 726         //
 727         // Read configuration files
 728         //
 729
 730         // This one may have been distributed along with LyX.
 731         if (!readRcFile("lyxrc.dist"))
 732                 return false;
 733
 734         // Set the language defined by the distributor.
 735         setRcGuiLanguage();
 736
 737         // Set the PATH correctly.
 738 #if !defined (USE_POSIX_PACKAGING)
 739         // Add the directory containing the LyX executable to the path
 740         // so that LyX can find things like tex2lyx.
 741         if (package().build_support().empty())
 742                 prependEnvPath("PATH", package().binary_dir().absFileName());
 743 #endif
 744         if (!lyxrc.path_prefix.empty())
 745                 prependEnvPath("PATH", lyxrc.path_prefix);
 746
 747         // Check that user LyX directory is ok.
 748         if (queryUserLyXDir(package().explicit_user_support()))
 749                 reconfigureUserLyXDir();
 750
 751         if (!use_gui) {
 752                 // No need for a splash when there is no GUI
 753                 first_start = false;
 754                 // Default is to overwrite the main file during export, unless
 755                 // the -f switch was specified or LYX_FORCE_OVERWRITE was set
 756                 if (force_overwrite == UNSPECIFIED) {
 757                         string const what = getEnv("LYX_FORCE_OVERWRITE");
 758                         if (what == "all")
 759                                 force_overwrite = ALL_FILES;
 760                         else if (what == "none")
 761                                 force_overwrite = NO_FILES;
 762                         else
 763                                 force_overwrite = MAIN_FILE;
 764                 }
 765         }
 766
 767         // This one is generated in user_support directory by lib/configure.py.
 768         if (!readRcFile("lyxrc.defaults"))
 769                 return false;
 770
 771         // Query the OS to know what formats are viewed natively
 772         formats.setAutoOpen();
 773
 774         // Read lyxrc.dist again to be able to override viewer auto-detection.
 775         readRcFile("lyxrc.dist");
 776
 777         // Set again the language defined by the distributor.
 778         setRcGuiLanguage();
 779
 780         system_lyxrc = lyxrc;
 781         system_formats = formats;
 782         pimpl_->system_converters_ = pimpl_->converters_;
 783         pimpl_->system_movers_ = pimpl_->movers_;
 784         system_lcolor = lcolor;
 785
 786         // This one is edited through the preferences dialog.
 787         if (!readRcFile("preferences"))
 788                 return false;
 789
 790         if (!readEncodingsFile("encodings", "unicodesymbols"))
 791                 return false;
 792         if (!readLanguagesFile("languages"))
 793                 return false;
 794
 795         // Set the language defined by the user.
 796         setRcGuiLanguage();
 797
 798         LYXERR(Debug::INIT, "Reading layouts...");
 799         // Load the layouts
 800         LayoutFileList::get().read();
 801         //...and the modules
 802         theModuleList.read();
 803
 804         // read keymap and ui files in batch mode as well
 805         // because InsetInfo needs to know these to produce
 806         // the correct output
 807
 808         // Set up command definitions
 809         pimpl_->toplevel_cmddef_.read(lyxrc.def_file);
 810
 811         // Set up bindings
 812         pimpl_->toplevel_keymap_.read("site");
 813         pimpl_->toplevel_keymap_.read(lyxrc.bind_file);
 814         // load user bind file user.bind
 815         pimpl_->toplevel_keymap_.read("user", 0, KeyMap::MissingOK);
 816
 817         if (lyxerr.debugging(Debug::LYXRC))
 818                 lyxrc.print();
 819
 820         os::windows_style_tex_paths(lyxrc.windows_style_tex_paths);
 821         if (!lyxrc.path_prefix.empty())
 822                 prependEnvPath("PATH", lyxrc.path_prefix);
 823
 824         FileName const document_path(lyxrc.document_path);
 825         if (document_path.exists() && document_path.isDirectory())
 826                 package().document_dir() = document_path;
 827
 828         package().set_temp_dir(createLyXTmpDir(FileName(lyxrc.tempdir_path)));
 829         if (package().temp_dir().empty()) {
 830                 Alert::error(_("Could not create temporary directory"),
 831                              bformat(_("Could not create a temporary directory in\n"
 832                                                        "\"%1$s\"\n"
 833                                                            "Make sure that this path exists and is writable and try again."),
 834                                      from_utf8(lyxrc.tempdir_path)));
 835                 // createLyXTmpDir() tries sufficiently hard to create a
 836                 // usable temp dir, so the probability to come here is
 837                 // close to zero. We therefore don't try to overcome this
 838                 // problem with e.g. asking the user for a new path and
 839                 // trying again but simply exit.
 840                 return false;
 841         }
 842
 843         LYXERR(Debug::INIT, "LyX tmp dir: `"
 844                             << package().temp_dir().absFileName() << '\'');
 845
 846         LYXERR(Debug::INIT, "Reading session information '.lyx/session'...");
 847         pimpl_->session_.reset(new Session(lyxrc.num_lastfiles));
 848
 849         // This must happen after package initialization and after lyxrc is
 850         // read, therefore it can't be done by a static object.
 851         ConverterCache::init();
 852
 853         return true;
 854 }
 855
 856
 857 void emergencyCleanup()
 858 {
 859         // what to do about tmpfiles is non-obvious. we would
 860         // like to delete any we find, but our lyxdir might
 861         // contain documents etc. which might be helpful on
 862         // a crash
 863
 864         singleton_->pimpl_->buffer_list_.emergencyWriteAll();
 865         if (use_gui) {
 866                 if (singleton_->pimpl_->lyx_server_)
 867                         singleton_->pimpl_->lyx_server_->emergencyCleanup();
 868                 singleton_->pimpl_->lyx_server_.reset();
 869                 singleton_->pimpl_->lyx_socket_.reset();
 870         }
 871 }
 872
 873
 874 // return true if file does not exist or is older than configure.py.
 875 static bool needsUpdate(string const & file)
 876 {
 877         // We cannot initialize configure_script directly because the package
 878         // is not initialized yet when  static objects are constructed.
 879         static FileName configure_script;
 880         static bool firstrun = true;
 881         if (firstrun) {
 882                 configure_script =
 883                         FileName(addName(package().system_support().absFileName(),
 884                                 "configure.py"));
 885                 firstrun = false;
 886         }
 887
 888         FileName absfile =
 889                 FileName(addName(package().user_support().absFileName(), file));
 890         return !absfile.exists()
 891                 || configure_script.lastModified() > absfile.lastModified();
 892 }
 893
 894
 895 bool LyX::queryUserLyXDir(bool explicit_userdir)
 896 {
 897         // Does user directory exist?
 898         FileName const sup = package().user_support();
 899         if (sup.exists() && sup.isDirectory()) {
 900                 first_start = false;
 901
 902                 return needsUpdate("lyxrc.defaults")
 903                         || needsUpdate("lyxmodules.lst")
 904                         || needsUpdate("textclass.lst")
 905                         || needsUpdate("packages.lst");
 906         }
 907
 908         first_start = !explicit_userdir;
 909
 910         // If the user specified explicitly a directory, ask whether
 911         // to create it. If the user says "no", then exit.
 912         if (explicit_userdir &&
 913             Alert::prompt(
 914                     _("Missing user LyX directory"),
 915                     bformat(_("You have specified a non-existent user "
 916                                            "LyX directory, %1$s.\n"
 917                                            "It is needed to keep your own configuration."),
 918                             from_utf8(package().user_support().absFileName())),
 919                     1, 0,
 920                     _("&Create directory"),
 921                     _("&Exit LyX"))) {
 922                 lyxerr << to_utf8(_("No user LyX directory. Exiting.")) << endl;
 923                 earlyExit(EXIT_FAILURE);
 924         }
 925
 926         lyxerr << to_utf8(bformat(_("LyX: Creating directory %1$s"),
 927                           from_utf8(sup.absFileName()))) << endl;
 928
 929         if (!sup.createDirectory(0755)) {
 930                 // Failed, so let's exit.
 931                 lyxerr << to_utf8(_("Failed to create directory. Exiting."))
 932                        << endl;
 933                 earlyExit(EXIT_FAILURE);
 934         }
 935
 936         return true;
 937 }
 938
 939
 940 bool LyX::readRcFile(string const & name)
 941 {
 942         LYXERR(Debug::INIT, "About to read " << name << "... ");
 943
 944         FileName const lyxrc_path = libFileSearch(string(), name);
 945         if (!lyxrc_path.empty()) {
 946                 LYXERR(Debug::INIT, "Found in " << lyxrc_path);
 947                 if (lyxrc.read(lyxrc_path) < 0) {
 948                         showFileError(name);
 949                         return false;
 950                 }
 951         } else {
 952                 LYXERR(Debug::INIT, "Not found." << lyxrc_path);
 953         }
 954         return true;
 955 }
 956
 957 // Read the languages file `name'
 958 bool LyX::readLanguagesFile(string const & name)
 959 {
 960         LYXERR(Debug::INIT, "About to read " << name << "...");
 961
 962         FileName const lang_path = libFileSearch(string(), name);
 963         if (lang_path.empty()) {
 964                 showFileError(name);
 965                 return false;
 966         }
 967         languages.read(lang_path);
 968         return true;
 969 }
 970
 971
 972 // Read the encodings file `name'
 973 bool LyX::readEncodingsFile(string const & enc_name,
 974                             string const & symbols_name)
 975 {
 976         LYXERR(Debug::INIT, "About to read " << enc_name << " and "
 977                             << symbols_name << "...");
 978
 979         FileName const symbols_path = libFileSearch(string(), symbols_name);
 980         if (symbols_path.empty()) {
 981                 showFileError(symbols_name);
 982                 return false;
 983         }
 984
 985         FileName const enc_path = libFileSearch(string(), enc_name);
 986         if (enc_path.empty()) {
 987                 showFileError(enc_name);
 988                 return false;
 989         }
 990         encodings.read(enc_path, symbols_path);
 991         return true;
 992 }
 993
 994
 995 namespace {
 996
 997 /// return the the number of arguments consumed
 998 typedef boost::function<int(string const &, string const &, string &)> cmd_helper;
 999
1000 int parse_dbg(string const & arg, string const &, string &)
1001 {
1002         if (arg.empty()) {
1003                 lyxerr << to_utf8(_("List of supported debug flags:")) << endl;
1004                 Debug::showTags(lyxerr);
1005                 exit(0);
1006         }
1007         lyxerr << to_utf8(bformat(_("Setting debug level to %1$s"), from_utf8(arg))) << endl;
1008
1009         lyxerr.setLevel(Debug::value(arg));
1010         Debug::showLevel(lyxerr, lyxerr.level());
1011         return 1;
1012 }
1013
1014
1015 int parse_help(string const &, string const &, string &)
1016 {
1017         lyxerr <<
1018                 to_utf8(_("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
1019                   "Command line switches (case sensitive):\n"
1020                   "\t-help              summarize LyX usage\n"
1021                   "\t-userdir dir       set user directory to dir\n"
1022                   "\t-sysdir dir        set system directory to dir\n"
1023                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
1024                   "\t-dbg feature[,feature]...\n"
1025                   "                  select the features to debug.\n"
1026                   "                  Type `lyx -dbg' to see the list of features\n"
1027                   "\t-x [--execute] command\n"
1028                   "                  where command is a lyx command.\n"
1029                   "\t-e [--export] fmt\n"
1030                   "                  where fmt is the export format of choice.\n"
1031                   "                  Look on Tools->Preferences->File formats->Format\n"
1032                   "                  to get an idea which parameters should be passed.\n"
1033                   "                  Note that the order of -e and -x switches matters.\n"
1034                   "\t-i [--import] fmt file.xxx\n"
1035                   "                  where fmt is the import format of choice\n"
1036                   "                  and file.xxx is the file to be imported.\n"
1037                   "\t-f [--force-overwrite] what\n"
1038                   "                  where what is either `all', `main' or `none',\n"
1039                   "                  specifying whether all files, main file only, or no files,\n"
1040                   "                  respectively, are to be overwritten during a batch export.\n"
1041                   "                  Anything else is equivalent to `all', but is not consumed.\n"
1042                   "\t-batch          execute commands without launching GUI and exit.\n"
1043                   "\t-version        summarize version and build info\n"
1044                                "Check the LyX man page for more details.")) << endl;
1045         exit(0);
1046         return 0;
1047 }
1048
1049
1050 int parse_version(string const &, string const &, string &)
1051 {
1052         lyxerr << "LyX " << lyx_version
1053                << " (" << lyx_release_date << ")" << endl;
1054         lyxerr << "Built on " << __DATE__ << ", " << __TIME__ << endl;
1055
1056         lyxerr << lyx_version_info << endl;
1057         exit(0);
1058         return 0;
1059 }
1060
1061
1062 int parse_sysdir(string const & arg, string const &, string &)
1063 {
1064         if (arg.empty()) {
1065                 Alert::error(_("No system directory"),
1066                         _("Missing directory for -sysdir switch"));
1067                 exit(1);
1068         }
1069         cl_system_support = arg;
1070         return 1;
1071 }
1072
1073
1074 int parse_userdir(string const & arg, string const &, string &)
1075 {
1076         if (arg.empty()) {
1077                 Alert::error(_("No user directory"),
1078                         _("Missing directory for -userdir switch"));
1079                 exit(1);
1080         }
1081         cl_user_support = arg;
1082         return 1;
1083 }
1084
1085
1086 int parse_execute(string const & arg, string const &, string & batch)
1087 {
1088         if (arg.empty()) {
1089                 Alert::error(_("Incomplete command"),
1090                         _("Missing command string after --execute switch"));
1091                 exit(1);
1092         }
1093         batch = arg;
1094         return 1;
1095 }
1096
1097
1098 int parse_export(string const & type, string const &, string & batch)
1099 {
1100         if (type.empty()) {
1101                 lyxerr << to_utf8(_("Missing file type [eg latex, ps...] after "
1102                                          "--export switch")) << endl;
1103                 exit(1);
1104         }
1105         batch = "buffer-export " + type;
1106         use_gui = false;
1107         return 1;
1108 }
1109
1110
1111 int parse_import(string const & type, string const & file, string & batch)
1112 {
1113         if (type.empty()) {
1114                 lyxerr << to_utf8(_("Missing file type [eg latex, ps...] after "
1115                                          "--import switch")) << endl;
1116                 exit(1);
1117         }
1118         if (file.empty()) {
1119                 lyxerr << to_utf8(_("Missing filename for --import")) << endl;
1120                 exit(1);
1121         }
1122
1123         batch = "buffer-import " + type + ' ' + file;
1124         return 2;
1125 }
1126
1127
1128 int parse_geometry(string const & arg1, string const &, string &)
1129 {
1130         geometryArg = arg1;
1131         // don't remove "-geometry", it will be pruned out later in the
1132         // frontend if need be.
1133         return -1;
1134 }
1135
1136
1137 int parse_batch(string const &, string const &, string &)
1138 {
1139         use_gui = false;
1140         return 0;
1141 }
1142
1143
1144 int parse_force(string const & arg, string const &, string &)
1145 {
1146         if (arg == "all") {
1147                 force_overwrite = ALL_FILES;
1148                 return 1;
1149         } else if (arg == "main") {
1150                 force_overwrite = MAIN_FILE;
1151                 return 1;
1152         } else if (arg == "none") {
1153                 force_overwrite = NO_FILES;
1154                 return 1;
1155         }
1156         force_overwrite = ALL_FILES;
1157         return 0;
1158 }
1159
1160
1161 } // namespace anon
1162
1163
1164 void LyX::easyParse(int & argc, char * argv[])
1165 {
1166         map<string, cmd_helper> cmdmap;
1167
1168         cmdmap["-dbg"] = parse_dbg;
1169         cmdmap["-help"] = parse_help;
1170         cmdmap["--help"] = parse_help;
1171         cmdmap["-version"] = parse_version;
1172         cmdmap["--version"] = parse_version;
1173         cmdmap["-sysdir"] = parse_sysdir;
1174         cmdmap["-userdir"] = parse_userdir;
1175         cmdmap["-x"] = parse_execute;
1176         cmdmap["--execute"] = parse_execute;
1177         cmdmap["-e"] = parse_export;
1178         cmdmap["--export"] = parse_export;
1179         cmdmap["-i"] = parse_import;
1180         cmdmap["--import"] = parse_import;
1181         cmdmap["-geometry"] = parse_geometry;
1182         cmdmap["-batch"] = parse_batch;
1183         cmdmap["-f"] = parse_force;
1184         cmdmap["--force-overwrite"] = parse_force;
1185
1186         for (int i = 1; i < argc; ++i) {
1187                 map<string, cmd_helper>::const_iterator it
1188                         = cmdmap.find(argv[i]);
1189
1190                 // don't complain if not found - may be parsed later
1191                 if (it == cmdmap.end())
1192                         continue;
1193
1194                 string const arg =
1195                         (i + 1 < argc) ? os::utf8_argv(i + 1) : string();
1196                 string const arg2 =
1197                         (i + 2 < argc) ? os::utf8_argv(i + 2) : string();
1198
1199                 string batch;
1200                 int const remove = 1 + it->second(arg, arg2, batch);
1201                 if (!batch.empty())
1202                         pimpl_->batch_commands.push_back(batch);
1203
1204                 // Now, remove used arguments by shifting
1205                 // the following ones remove places down.
1206                 if (remove > 0) {
1207                         os::remove_internal_args(i, remove);
1208                         argc -= remove;
1209                         for (int j = i; j < argc; ++j)
1210                                 argv[j] = argv[j + remove];
1211                         --i;
1212                 }
1213         }
1214 }
1215
1216
1217 FuncStatus getStatus(FuncRequest const & action)
1218 {
1219         LASSERT(theApp(), /**/);
1220         return theApp()->getStatus(action);
1221 }
1222
1223
1224 void dispatch(FuncRequest const & action)
1225 {
1226         LASSERT(theApp(), /**/);
1227         return theApp()->dispatch(action);
1228 }
1229
1230
1231 void dispatch(FuncRequest const & action, DispatchResult & dr)
1232 {
1233         LASSERT(theApp(), /**/);
1234         return theApp()->dispatch(action, dr);
1235 }
1236
1237
1238 BufferList & theBufferList()
1239 {
1240         LASSERT(singleton_, /**/);
1241         return singleton_->pimpl_->buffer_list_;
1242 }
1243
1244
1245 Server & theServer()
1246 {
1247         // FIXME: this should not be use_gui dependent
1248         LASSERT(use_gui, /**/);
1249         LASSERT(singleton_, /**/);
1250         return *singleton_->pimpl_->lyx_server_.get();
1251 }
1252
1253
1254 ServerSocket & theServerSocket()
1255 {
1256         // FIXME: this should not be use_gui dependent
1257         LASSERT(use_gui, /**/);
1258         LASSERT(singleton_, /**/);
1259         return *singleton_->pimpl_->lyx_socket_.get();
1260 }
1261
1262
1263 KeyMap & theTopLevelKeymap()
1264 {
1265         LASSERT(singleton_, /**/);
1266         return singleton_->pimpl_->toplevel_keymap_;
1267 }
1268
1269
1270 Converters & theConverters()
1271 {
1272         LASSERT(singleton_, /**/);
1273         return  singleton_->pimpl_->converters_;
1274 }
1275
1276
1277 Converters & theSystemConverters()
1278 {
1279         LASSERT(singleton_, /**/);
1280         return  singleton_->pimpl_->system_converters_;
1281 }
1282
1283
1284 Movers & theMovers()
1285 {
1286         LASSERT(singleton_, /**/);
1287         return singleton_->pimpl_->movers_;
1288 }
1289
1290
1291 Mover const & getMover(string  const & fmt)
1292 {
1293         LASSERT(singleton_, /**/);
1294         return singleton_->pimpl_->movers_(fmt);
1295 }
1296
1297
1298 void setMover(string const & fmt, string const & command)
1299 {
1300         LASSERT(singleton_, /**/);
1301         singleton_->pimpl_->movers_.set(fmt, command);
1302 }
1303
1304
1305 Movers & theSystemMovers()
1306 {
1307         LASSERT(singleton_, /**/);
1308         return singleton_->pimpl_->system_movers_;
1309 }
1310
1311
1312 Messages const & getMessages(string const & language)
1313 {
1314         LASSERT(singleton_, /**/);
1315         return singleton_->messages(language);
1316 }
1317
1318
1319 Messages const & getGuiMessages()
1320 {
1321         LASSERT(singleton_, /**/);
1322         return singleton_->pimpl_->messages_["GUI"];
1323 }
1324
1325
1326 graphics::Previews & thePreviews()
1327 {
1328         LASSERT(singleton_, /**/);
1329         return singleton_->pimpl_->preview_;
1330 }
1331
1332
1333 Session & theSession()
1334 {
1335         LASSERT(singleton_, /**/);
1336         return *singleton_->pimpl_->session_.get();
1337 }
1338
1339
1340 CmdDef & theTopLevelCmdDef()
1341 {
1342         LASSERT(singleton_, /**/);
1343         return singleton_->pimpl_->toplevel_cmddef_;
1344 }
1345
1346
1347 SpellChecker * theSpellChecker()
1348 {
1349         if (!singleton_->pimpl_->spell_checker_)
1350                 setSpellChecker();
1351         return singleton_->pimpl_->spell_checker_;
1352 }
1353
1354
1355 void setSpellChecker()
1356 {
1357         SpellChecker::ChangeNumber speller_change_number =singleton_->pimpl_->spell_checker_ ?
1358                 singleton_->pimpl_->spell_checker_->changeNumber() : 0;
1359
1360         if (lyxrc.spellchecker == "native") {
1361 #if defined(USE_MACOSX_PACKAGING)
1362                 if (!singleton_->pimpl_->apple_spell_checker_)
1363                         singleton_->pimpl_->apple_spell_checker_ = new AppleSpellChecker();
1364                 singleton_->pimpl_->spell_checker_ = singleton_->pimpl_->apple_spell_checker_;
1365 #else
1366                 singleton_->pimpl_->spell_checker_ = 0;
1367 #endif
1368         } else if (lyxrc.spellchecker == "aspell") {
1369 #if defined(USE_ASPELL)
1370                 if (!singleton_->pimpl_->aspell_checker_)
1371                         singleton_->pimpl_->aspell_checker_ = new AspellChecker();
1372                 singleton_->pimpl_->spell_checker_ = singleton_->pimpl_->aspell_checker_;
1373 #else
1374                 singleton_->pimpl_->spell_checker_ = 0;
1375 #endif
1376         } else if (lyxrc.spellchecker == "enchant") {
1377 #if defined(USE_ENCHANT)
1378                 if (!singleton_->pimpl_->enchant_checker_)
1379                         singleton_->pimpl_->enchant_checker_ = new EnchantChecker();
1380                 singleton_->pimpl_->spell_checker_ = singleton_->pimpl_->enchant_checker_;
1381 #else
1382                 singleton_->pimpl_->spell_checker_ = 0;
1383 #endif
1384         } else if (lyxrc.spellchecker == "hunspell") {
1385 #if defined(USE_HUNSPELL)
1386                 if (!singleton_->pimpl_->hunspell_checker_)
1387                         singleton_->pimpl_->hunspell_checker_ = new HunspellChecker();
1388                 singleton_->pimpl_->spell_checker_ = singleton_->pimpl_->hunspell_checker_;
1389 #else
1390                 singleton_->pimpl_->spell_checker_ = 0;
1391 #endif
1392         } else {
1393                 singleton_->pimpl_->spell_checker_ = 0;
1394         }
1395         if (singleton_->pimpl_->spell_checker_) {
1396                 singleton_->pimpl_->spell_checker_->changeNumber(speller_change_number);
1397                 singleton_->pimpl_->spell_checker_->advanceChangeNumber();
1398         }
1399 }
1400
1401 } // namespace lyx