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::exists(lyxrc.document_path) &&
 488             fs::is_directory(lyxrc.document_path))
 489                 package().document_dir() = lyxrc.document_path;
 490
 491         package().temp_dir() = createLyXTmpDir(lyxrc.tempdir_path);
 492         if (package().temp_dir().empty()) {
 493                 Alert::error(_("Could not create temporary directory"),
 494                              bformat(_("Could not create a temporary directory in\n"
 495                                        "%1$s. Make sure that this\n"
 496                                        "path exists and is writable and try again."),
 497                                      lyxrc.tempdir_path));
 498                 // createLyXTmpDir() tries sufficiently hard to create a
 499                 // usable temp dir, so the probability to come here is
 500                 // close to zero. We therefore don't try to overcome this
 501                 // problem with e.g. asking the user for a new path and
 502                 // trying again but simply exit.
 503                 exit(EXIT_FAILURE);
 504         }
 505
 506         if (lyxerr.debugging(Debug::INIT)) {
 507                 lyxerr << "LyX tmp dir: `" << package().temp_dir() << '\'' << endl;
 508         }
 509
 510         lyxerr[Debug::INIT] << "Reading lastfiles `"
 511                             << lyxrc.lastfiles << "'..." << endl;
 512         lastfiles_.reset(new LastFiles(lyxrc.lastfiles,
 513                                        lyxrc.check_lastfiles,
 514                                        lyxrc.num_lastfiles));
 515 }
 516
 517
 518 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 519 {
 520         kbmap->bind("Right", FuncRequest(LFUN_RIGHT));
 521         kbmap->bind("Left", FuncRequest(LFUN_LEFT));
 522         kbmap->bind("Up", FuncRequest(LFUN_UP));
 523         kbmap->bind("Down", FuncRequest(LFUN_DOWN));
 524
 525         kbmap->bind("Tab", FuncRequest(LFUN_CELL_FORWARD));
 526         kbmap->bind("ISO_Left_Tab", FuncRequest(LFUN_CELL_FORWARD));
 527
 528         kbmap->bind("Home", FuncRequest(LFUN_HOME));
 529         kbmap->bind("End", FuncRequest(LFUN_END));
 530         kbmap->bind("Prior", FuncRequest(LFUN_PRIOR));
 531         kbmap->bind("Next", FuncRequest(LFUN_NEXT));
 532
 533         kbmap->bind("Return", FuncRequest(LFUN_BREAKPARAGRAPH));
 534         //kbmap->bind("~C-~S-~M-nobreakspace", FuncRequest(LFUN_PROTECTEDSPACE));
 535
 536         kbmap->bind("Delete", FuncRequest(LFUN_DELETE));
 537         kbmap->bind("BackSpace", FuncRequest(LFUN_BACKSPACE));
 538
 539         // kbmap->bindings to enable the use of the numeric keypad
 540         // e.g. Num Lock set
 541         //kbmap->bind("KP_0", FuncRequest(LFUN_SELFINSERT));
 542         //kbmap->bind("KP_Decimal", FuncRequest(LFUN_SELFINSERT));
 543         kbmap->bind("KP_Enter", FuncRequest(LFUN_BREAKPARAGRAPH));
 544         //kbmap->bind("KP_1", FuncRequest(LFUN_SELFINSERT));
 545         //kbmap->bind("KP_2", FuncRequest(LFUN_SELFINSERT));
 546         //kbmap->bind("KP_3", FuncRequest(LFUN_SELFINSERT));
 547         //kbmap->bind("KP_4", FuncRequest(LFUN_SELFINSERT));
 548         //kbmap->bind("KP_5", FuncRequest(LFUN_SELFINSERT));
 549         //kbmap->bind("KP_6", FuncRequest(LFUN_SELFINSERT));
 550         //kbmap->bind("KP_Add", FuncRequest(LFUN_SELFINSERT));
 551         //kbmap->bind("KP_7", FuncRequest(LFUN_SELFINSERT));
 552         //kbmap->bind("KP_8", FuncRequest(LFUN_SELFINSERT));
 553         //kbmap->bind("KP_9", FuncRequest(LFUN_SELFINSERT));
 554         //kbmap->bind("KP_Divide", FuncRequest(LFUN_SELFINSERT));
 555         //kbmap->bind("KP_Multiply", FuncRequest(LFUN_SELFINSERT));
 556         //kbmap->bind("KP_Subtract", FuncRequest(LFUN_SELFINSERT));
 557         kbmap->bind("KP_Right", FuncRequest(LFUN_RIGHT));
 558         kbmap->bind("KP_Left", FuncRequest(LFUN_LEFT));
 559         kbmap->bind("KP_Up", FuncRequest(LFUN_UP));
 560         kbmap->bind("KP_Down", FuncRequest(LFUN_DOWN));
 561         kbmap->bind("KP_Home", FuncRequest(LFUN_HOME));
 562         kbmap->bind("KP_End", FuncRequest(LFUN_END));
 563         kbmap->bind("KP_Prior", FuncRequest(LFUN_PRIOR));
 564         kbmap->bind("KP_Next", FuncRequest(LFUN_NEXT));
 565
 566         kbmap->bind("C-Tab", FuncRequest(LFUN_CELL_SPLIT));
 567         kbmap->bind("S-Tab", FuncRequest(LFUN_CELL_BACKWARD));
 568         kbmap->bind("S-ISO_Left_Tab", FuncRequest(LFUN_CELL_BACKWARD));
 569 }
 570
 571
 572 void LyX::emergencyCleanup() const
 573 {
 574         // what to do about tmpfiles is non-obvious. we would
 575         // like to delete any we find, but our lyxdir might
 576         // contain documents etc. which might be helpful on
 577         // a crash
 578
 579         bufferlist.emergencyWriteAll();
 580         if (lyxserver)
 581                 lyxserver->emergencyCleanup();
 582 }
 583
 584
 585 void LyX::deadKeyBindings(kb_keymap * kbmap)
 586 {
 587         // bindKeyings for transparent handling of deadkeys
 588         // The keysyms are gotten from XFree86 X11R6
 589         kbmap->bind("~C-~S-~M-dead_acute", FuncRequest(LFUN_ACUTE));
 590         kbmap->bind("~C-~S-~M-dead_breve", FuncRequest(LFUN_BREVE));
 591         kbmap->bind("~C-~S-~M-dead_caron", FuncRequest(LFUN_CARON));
 592         kbmap->bind("~C-~S-~M-dead_cedilla", FuncRequest(LFUN_CEDILLA));
 593         kbmap->bind("~C-~S-~M-dead_abovering", FuncRequest(LFUN_CIRCLE));
 594         kbmap->bind("~C-~S-~M-dead_circumflex", FuncRequest(LFUN_CIRCUMFLEX));
 595         kbmap->bind("~C-~S-~M-dead_abovedot", FuncRequest(LFUN_DOT));
 596         kbmap->bind("~C-~S-~M-dead_grave", FuncRequest(LFUN_GRAVE));
 597         kbmap->bind("~C-~S-~M-dead_doubleacute", FuncRequest(LFUN_HUNG_UMLAUT));
 598         kbmap->bind("~C-~S-~M-dead_macron", FuncRequest(LFUN_MACRON));
 599         // nothing with this name
 600         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 601         kbmap->bind("~C-~S-~M-dead_tilde", FuncRequest(LFUN_TILDE));
 602         kbmap->bind("~C-~S-~M-dead_diaeresis", FuncRequest(LFUN_UMLAUT));
 603         // nothing with this name either...
 604         //kbmap->bind("~C-~S-~M-dead_underbar", FuncRequest(LFUN_UNDERBAR));
 605         kbmap->bind("~C-~S-~M-dead_belowdot", FuncRequest(LFUN_UNDERDOT));
 606         kbmap->bind("~C-~S-~M-dead_tie", FuncRequest(LFUN_TIE));
 607         kbmap->bind("~C-~S-~M-dead_ogonek",FuncRequest(LFUN_OGONEK));
 608 }
 609
 610
 611 bool LyX::queryUserLyXDir(bool explicit_userdir)
 612 {
 613         bool reconfigure = false;
 614
 615         // Does user directory exist?
 616         if (fs::exists(package().user_support()) &&
 617             fs::is_directory(package().user_support())) {
 618                 first_start = false;
 619                 string const configure_script =
 620                         AddName(package().system_support(), "configure");
 621                 string const userDefaults =
 622                         AddName(package().user_support(), "lyxrc.defaults");
 623                 if (fs::exists(configure_script) &&
 624                     fs::exists(userDefaults) &&
 625                     fs::last_write_time(configure_script)
 626                     < fs::last_write_time(userDefaults)) {
 627                         reconfigure = true;
 628                 }
 629                 return reconfigure;
 630         }
 631
 632         first_start = !explicit_userdir;
 633
 634         // If the user specified explicitly a directory, ask whether
 635         // to create it. If the user says "no", then exit.
 636         if (explicit_userdir &&
 637             !Alert::prompt(
 638                     _("Missing LyX support directory"),
 639                     bformat(_("You have specified a non-existent user "
 640                               "LyX directory, %1$s.\n"
 641                               "It is needed to keep your own configuration."),
 642                             package().user_support()),
 643                     1, 0,
 644                     _("&Create directory."),
 645                     _("&Exit LyX."))) {
 646                 lyxerr << _("No user LyX directory. Exiting.") << endl;
 647                 exit(1);
 648         }
 649
 650         lyxerr << bformat(_("LyX: Creating directory %1$s"),
 651                           package().user_support())
 652                << endl;
 653         reconfigure = true;
 654
 655         if (!createDirectory(package().user_support(), 0755)) {
 656                 // Failed, so let's exit.
 657                 lyxerr << _("Failed to create directory. Exiting.")
 658                        << endl;
 659                 exit(1);
 660         }
 661
 662         return reconfigure;
 663 }
 664
 665
 666 void LyX::readRcFile(string const & name)
 667 {
 668         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 669
 670         string const lyxrc_path = LibFileSearch(string(), name);
 671         if (!lyxrc_path.empty()) {
 672
 673                 lyxerr[Debug::INIT] << "Found " << name
 674                                     << " in " << lyxrc_path << endl;
 675
 676                 if (lyxrc.read(lyxrc_path) >= 0)
 677                         return;
 678         }
 679
 680         showFileError(name);
 681 }
 682
 683
 684 // Read the ui file `name'
 685 void LyX::readUIFile(string const & name)
 686 {
 687         enum Uitags {
 688                 ui_menuset = 1,
 689                 ui_toolbar,
 690                 ui_toolbars,
 691                 ui_include,
 692                 ui_last
 693         };
 694
 695         struct keyword_item uitags[ui_last - 1] = {
 696                 { "include", ui_include },
 697                 { "menuset", ui_menuset },
 698                 { "toolbar", ui_toolbar },
 699                 { "toolbars", ui_toolbars }
 700         };
 701
 702         // Ensure that a file is read only once (prevents include loops)
 703         static std::list<string> uifiles;
 704         std::list<string>::const_iterator it  = uifiles.begin();
 705         std::list<string>::const_iterator end = uifiles.end();
 706         it = std::find(it, end, name);
 707         if (it != end) {
 708                 lyxerr[Debug::INIT] << "UI file '" << name
 709                                     << "' has been read already. "
 710                                     << "Is this an include loop?"
 711                                     << endl;
 712                 return;
 713         }
 714
 715         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 716
 717         string const ui_path = LibFileSearch("ui", name, "ui");
 718
 719         if (ui_path.empty()) {
 720                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 721                 showFileError(name);
 722                 return;
 723         }
 724         uifiles.push_back(name);
 725
 726         lyxerr[Debug::INIT] << "Found " << name
 727                             << " in " << ui_path << endl;
 728         LyXLex lex(uitags, ui_last - 1);
 729         lex.setFile(ui_path);
 730         if (!lex.isOK()) {
 731                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 732                        << endl;
 733         }
 734
 735         if (lyxerr.debugging(Debug::PARSER))
 736                 lex.printTable(lyxerr);
 737
 738         while (lex.isOK()) {
 739                 switch (lex.lex()) {
 740                 case ui_include: {
 741                         lex.next(true);
 742                         string const file = lex.getString();
 743                         readUIFile(file);
 744                         break;
 745                 }
 746                 case ui_menuset:
 747                         menubackend.read(lex);
 748                         break;
 749
 750                 case ui_toolbar:
 751                         toolbarbackend.read(lex);
 752                         break;
 753
 754                 case ui_toolbars:
 755                         toolbarbackend.readToolbars(lex);
 756                         break;
 757
 758                 default:
 759                         if (!rtrim(lex.getString()).empty())
 760                                 lex.printError("LyX::ReadUIFile: "
 761                                                "Unknown menu tag: `$$Token'");
 762                         break;
 763                 }
 764         }
 765 }
 766
 767
 768 // Read the languages file `name'
 769 void LyX::readLanguagesFile(string const & name)
 770 {
 771         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 772
 773         string const lang_path = LibFileSearch(string(), name);
 774         if (lang_path.empty()) {
 775                 showFileError(name);
 776                 return;
 777         }
 778         languages.read(lang_path);
 779 }
 780
 781
 782 // Read the encodings file `name'
 783 void LyX::readEncodingsFile(string const & name)
 784 {
 785         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 786
 787         string const enc_path = LibFileSearch(string(), name);
 788         if (enc_path.empty()) {
 789                 showFileError(name);
 790                 return;
 791         }
 792         encodings.read(enc_path);
 793 }
 794
 795
 796 namespace {
 797
 798 bool is_gui = true;
 799 string batch;
 800
 801 /// return the the number of arguments consumed
 802 typedef boost::function<int(string const &, string const &)> cmd_helper;
 803
 804 int parse_dbg(string const & arg, string const &)
 805 {
 806         if (arg.empty()) {
 807                 lyxerr << _("List of supported debug flags:") << endl;
 808                 Debug::showTags(lyxerr);
 809                 exit(0);
 810         }
 811         lyxerr << bformat(_("Setting debug level to %1$s"), arg) << endl;
 812
 813         lyxerr.level(Debug::value(arg));
 814         Debug::showLevel(lyxerr, lyxerr.level());
 815         return 1;
 816 }
 817
 818
 819 int parse_help(string const &, string const &)
 820 {
 821         lyxerr <<
 822                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 823                   "Command line switches (case sensitive):\n"
 824                   "\t-help              summarize LyX usage\n"
 825                   "\t-userdir dir       try to set user directory to dir\n"
 826                   "\t-sysdir dir        try to set system directory to dir\n"
 827                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 828                   "\t-dbg feature[,feature]...\n"
 829                   "                  select the features to debug.\n"
 830                   "                  Type `lyx -dbg' to see the list of features\n"
 831                   "\t-x [--execute] command\n"
 832                   "                  where command is a lyx command.\n"
 833                   "\t-e [--export] fmt\n"
 834                   "                  where fmt is the export format of choice.\n"
 835                   "\t-i [--import] fmt file.xxx\n"
 836                   "                  where fmt is the import format of choice\n"
 837                   "                  and file.xxx is the file to be imported.\n"
 838                   "\t-version        summarize version and build info\n"
 839                   "Check the LyX man page for more details.") << endl;
 840         exit(0);
 841         return 0;
 842 }
 843
 844 int parse_version(string const &, string const &)
 845 {
 846         lyxerr << "LyX " << lyx_version
 847                << " of " << lyx_release_date << endl;
 848         lyxerr << "Built on " << __DATE__ << ", " << __TIME__ << endl;
 849
 850         lyxerr << lyx_version_info << endl;
 851         exit(0);
 852         return 0;
 853 }
 854
 855 int parse_sysdir(string const & arg, string const &)
 856 {
 857         if (arg.empty()) {
 858                 lyxerr << _("Missing directory for -sysdir switch") << endl;
 859                 exit(1);
 860         }
 861         cl_system_support = arg;
 862         return 1;
 863 }
 864
 865 int parse_userdir(string const & arg, string const &)
 866 {
 867         if (arg.empty()) {
 868                 lyxerr << _("Missing directory for -userdir switch") << endl;
 869                 exit(1);
 870         }
 871         cl_user_support = arg;
 872         return 1;
 873 }
 874
 875 int parse_execute(string const & arg, string const &)
 876 {
 877         if (arg.empty()) {
 878                 lyxerr << _("Missing command string after --execute switch") << endl;
 879                 exit(1);
 880         }
 881         batch = arg;
 882         // Argh. Setting gui to false segfaults..
 883         // FIXME: when ? how ?
 884         // is_gui = false;
 885         return 1;
 886 }
 887
 888 int parse_export(string const & type, string const &)
 889 {
 890         if (type.empty()) {
 891                 lyxerr << _("Missing file type [eg latex, ps...] after "
 892                         "--export switch") << endl;
 893                 exit(1);
 894         }
 895         batch = "buffer-export " + type;
 896         is_gui = false;
 897         return 1;
 898 }
 899
 900 int parse_import(string const & type, string const & file)
 901 {
 902         if (type.empty()) {
 903                 lyxerr << _("Missing file type [eg latex, ps...] after "
 904                         "--import switch") << endl;
 905                 exit(1);
 906         }
 907         if (file.empty()) {
 908                 lyxerr << _("Missing filename for --import") << endl;
 909                 exit(1);
 910         }
 911
 912         batch = "buffer-import " + type + ' ' + file;
 913         return 2;
 914 }
 915
 916 } // namespace anon
 917
 918
 919 bool LyX::easyParse(int & argc, char * argv[])
 920 {
 921         std::map<string, cmd_helper> cmdmap;
 922
 923         cmdmap["-dbg"] = parse_dbg;
 924         cmdmap["-help"] = parse_help;
 925         cmdmap["--help"] = parse_help;
 926         cmdmap["-version"] = parse_version;
 927         cmdmap["--version"] = parse_version;
 928         cmdmap["-sysdir"] = parse_sysdir;
 929         cmdmap["-userdir"] = parse_userdir;
 930         cmdmap["-x"] = parse_execute;
 931         cmdmap["--execute"] = parse_execute;
 932         cmdmap["-e"] = parse_export;
 933         cmdmap["--export"] = parse_export;
 934         cmdmap["-i"] = parse_import;
 935         cmdmap["--import"] = parse_import;
 936
 937         for (int i = 1; i < argc; ++i) {
 938                 std::map<string, cmd_helper>::const_iterator it
 939                         = cmdmap.find(argv[i]);
 940
 941                 // don't complain if not found - may be parsed later
 942                 if (it == cmdmap.end())
 943                         continue;
 944
 945                 string arg((i + 1 < argc) ? argv[i + 1] : "");
 946                 string arg2((i + 2 < argc) ? argv[i + 2] : "");
 947
 948                 int const remove = 1 + it->second(arg, arg2);
 949
 950                 // Now, remove used arguments by shifting
 951                 // the following ones remove places down.
 952                 argc -= remove;
 953                 for (int j = i; j < argc; ++j)
 954                         argv[j] = argv[j + remove];
 955                 --i;
 956         }
 957
 958         batch_command = batch;
 959
 960         return is_gui;
 961 }