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/environment.h"
  49 #include "support/filetools.h"
  50 #include "support/lyxlib.h"
  51 #include "support/os.h"
  52 #include "support/package.h"
  53 #include "support/path.h"
  54
  55 #include <boost/bind.hpp>
  56 #include <boost/filesystem/operations.hpp>
  57
  58 #include <iostream>
  59 #include <csignal>
  60
  61 using lyx::support::AddName;
  62 using lyx::support::AddPath;
  63 using lyx::support::bformat;
  64 using lyx::support::createDirectory;
  65 using lyx::support::createLyXTmpDir;
  66 using lyx::support::FileSearch;
  67 using lyx::support::getEnv;
  68 using lyx::support::i18nLibFileSearch;
  69 using lyx::support::LibFileSearch;
  70 using lyx::support::package;
  71 using lyx::support::Path;
  72 using lyx::support::prependEnvPath;
  73 using lyx::support::QuoteName;
  74 using lyx::support::rtrim;
  75
  76 namespace os = lyx::support::os;
  77 namespace fs = boost::filesystem;
  78
  79 using std::endl;
  80 using std::string;
  81 using std::vector;
  82
  83 #ifndef CXX_GLOBAL_CSTD
  84 using std::exit;
  85 using std::signal;
  86 using std::system;
  87 #endif
  88
  89
  90 extern void QuitLyX();
  91
  92 extern LyXServer * lyxserver;
  93
  94 // This is the global bufferlist object
  95 BufferList bufferlist;
  96
  97 // convenient to have it here.
  98 boost::scoped_ptr<kb_keymap> toplevel_keymap;
  99
 100 namespace {
 101
 102 // Filled with the command line arguments "foo" of "-sysdir foo" or
 103 // "-userdir foo".
 104 string cl_system_support;
 105 string cl_user_support;
 106
 107
 108 void showFileError(string const & error)
 109 {
 110         Alert::warning(_("Could not read configuration file"),
 111                    bformat(_("Error while reading the configuration file\n%1$s.\n"
 112                      "Please check your installation."), error));
 113         exit(EXIT_FAILURE);
 114 }
 115
 116
 117 void reconfigureUserLyXDir()
 118 {
 119         string const configure_script =
 120                 AddName(package().system_support(), "configure");
 121         string const configure_command =
 122                 "sh " + QuoteName(configure_script);
 123
 124         lyxerr << _("LyX: reconfiguring user directory") << endl;
 125         Path p(package().user_support());
 126         ::system(configure_command.c_str());
 127         lyxerr << "LyX: " << _("Done!") << endl;
 128 }
 129
 130 } // namespace anon
 131
 132
 133 boost::scoped_ptr<LyX> LyX::singleton_;
 134
 135 void LyX::exec(int & argc, char * argv[])
 136 {
 137         BOOST_ASSERT(!singleton_.get());
 138         // We must return from this before launching the gui so that
 139         // other parts of the code can access singleton_ through
 140         // LyX::ref and LyX::cref.
 141         singleton_.reset(new LyX);
 142         // Start the real execution loop.
 143         singleton_->priv_exec(argc, argv);
 144 }
 145
 146
 147 LyX & LyX::ref()
 148 {
 149         BOOST_ASSERT(singleton_.get());
 150         return *singleton_.get();
 151 }
 152
 153
 154 LyX const & LyX::cref()
 155 {
 156         BOOST_ASSERT(singleton_.get());
 157         return *singleton_.get();
 158 }
 159
 160
 161 LyX::LyX()
 162         : first_start(false)
 163 {}
 164
 165
 166 LastFiles & LyX::lastfiles()
 167 {
 168         BOOST_ASSERT(lastfiles_.get());
 169         return *lastfiles_.get();
 170 }
 171
 172
 173 LastFiles const & LyX::lastfiles() const
 174 {
 175         BOOST_ASSERT(lastfiles_.get());
 176         return *lastfiles_.get();
 177 }
 178
 179
 180 void LyX::addLyXView(boost::shared_ptr<LyXView> const & lyxview)
 181 {
 182         views_.push_back(lyxview);
 183 }
 184
 185
 186 Buffer const * const LyX::updateInset(InsetBase const * inset) const
 187 {
 188         if (!inset)
 189                 return 0;
 190
 191         Buffer const * buffer_ptr = 0;
 192         ViewList::const_iterator it = views_.begin();
 193         ViewList::const_iterator const end = views_.end();
 194         for (; it != end; ++it) {
 195                 Buffer const * ptr = (*it)->updateInset(inset);
 196                 if (ptr)
 197                         buffer_ptr = ptr;
 198         }
 199         return buffer_ptr;
 200 }
 201
 202
 203 void LyX::priv_exec(int & argc, char * argv[])
 204 {
 205         // Here we need to parse the command line. At least
 206         // we need to parse for "-dbg" and "-help"
 207         bool const want_gui = easyParse(argc, argv);
 208
 209         lyx::support::init_package(argv[0], cl_system_support, cl_user_support,
 210                                    lyx::support::top_build_dir_is_one_level_up);
 211
 212         if (want_gui)
 213                 lyx_gui::parse_init(argc, argv);
 214
 215         // check for any spurious extra arguments
 216         // other than documents
 217         for (int argi = 1; argi < argc ; ++argi) {
 218                 if (argv[argi][0] == '-') {
 219                         lyxerr << bformat(_("Wrong command line option `%1$s'. Exiting."),
 220                                 argv[argi]) << endl;
 221                         exit(1);
 222                 }
 223         }
 224
 225         // Initialization of LyX (reads lyxrc and more)
 226         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 227         init(want_gui);
 228         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 229
 230         if (want_gui)
 231                 lyx_gui::parse_lyxrc();
 232
 233         initMath();
 234
 235         vector<string> files;
 236
 237         for (int argi = argc - 1; argi >= 1; --argi)
 238                 files.push_back(argv[argi]);
 239
 240         if (first_start)
 241                 files.push_back(i18nLibFileSearch("examples", "splash.lyx"));
 242
 243         // Execute batch commands if available
 244         if (!batch_command.empty()) {
 245
 246                 lyxerr[Debug::INIT] << "About to handle -x '"
 247                        << batch_command << '\'' << endl;
 248
 249                 Buffer * last_loaded = 0;
 250
 251                 vector<string>::const_iterator it = files.begin();
 252                 vector<string>::const_iterator end = files.end();
 253
 254                 for (; it != end; ++it) {
 255                         // get absolute path of file and add ".lyx" to
 256                         // the filename if necessary
 257                         string s = FileSearch(string(), *it, "lyx");
 258                         if (s.empty()) {
 259                                 last_loaded = newFile(*it, string(), true);
 260                         } else {
 261                                 Buffer * buf = bufferlist.newBuffer(s, false);
 262                                 buf->error.connect(boost::bind(&LyX::printError, this, _1));
 263                                 if (loadLyXFile(buf, s))
 264                                         last_loaded = buf;
 265                                 else
 266                                         bufferlist.release(buf);
 267                         }
 268                 }
 269
 270                 // try to dispatch to last loaded buffer first
 271                 if (last_loaded) {
 272                         bool success = false;
 273                         if (last_loaded->dispatch(batch_command, &success)) {
 274                                 QuitLyX();
 275                                 exit(!success);
 276                         }
 277                 }
 278                 files.clear(); // the files are already loaded
 279         }
 280
 281         lyx_gui::start(batch_command, files);
 282 }
 283
 284
 285 /*
 286 Signals and Windows
 287 ===================
 288 The SIGHUP signal does not exist on Windows and does not need to be handled.
 289
 290 Windows handles SIGFPE and SIGSEGV signals as expected.
 291
 292 Cntl+C interrupts (mapped to SIGINT by Windows' POSIX compatability layer)
 293 cause a new thread to be spawned. This may well result in unexpected
 294 behaviour by the single-threaded LyX.
 295
 296 SIGTERM signals will come only from another process actually sending
 297 that signal using 'raise' in Windows' POSIX compatability layer. It will
 298 not come from the general "terminate process" methods that everyone
 299 actually uses (and which can't be trapped). Killing an app 'politely' on
 300 Windows involves first sending a WM_CLOSE message, something that is
 301 caught already by the Qt frontend.
 302
 303 For more information see:
 304
 305 http://aspn.activestate.com/ASPN/Mail/Message/ActiveTcl/2034055
 306 ...signals are mostly useless on Windows for a variety of reasons that are
 307 Windows specific...
 308
 309 'UNIX Application Migration Guide, Chapter 9'
 310 http://msdn.microsoft.com/library/en-us/dnucmg/html/UCMGch09.asp
 311
 312 'How To Terminate an Application "Cleanly" in Win32'
 313 http://support.microsoft.com/default.aspx?scid=kb;en-us;178893
 314 */
 315 extern "C" {
 316
 317 static void error_handler(int err_sig)
 318 {
 319         // Throw away any signals other than the first one received.
 320         static sig_atomic_t handling_error = false;
 321         if (handling_error)
 322                 return;
 323         handling_error = true;
 324
 325         // We have received a signal indicating a fatal error, so
 326         // try and save the data ASAP.
 327         LyX::cref().emergencyCleanup();
 328
 329         // These lyxerr calls may or may not work:
 330
 331         // Signals are asynchronous, so the main program may be in a very
 332         // fragile state when a signal is processed and thus while a signal
 333         // handler function executes.
 334         // In general, therefore, we should avoid performing any
 335         // I/O operations or calling most library and system functions from
 336         // signal handlers.
 337
 338         // This shouldn't matter here, however, as we've already invoked
 339         // emergencyCleanup.
 340         switch (err_sig) {
 341 #ifdef SIGHUP
 342         case SIGHUP:
 343                 lyxerr << "\nlyx: SIGHUP signal caught\nBye." << endl;
 344                 break;
 345 #endif
 346         case SIGFPE:
 347                 lyxerr << "\nlyx: SIGFPE signal caught\nBye." << endl;
 348                 break;
 349         case SIGSEGV:
 350                 lyxerr << "\nlyx: SIGSEGV signal caught\n"
 351                           "Sorry, you have found a bug in LyX. "
 352                           "Please read the bug-reporting instructions "
 353                           "in Help->Introduction and send us a bug report, "
 354                           "if necessary. Thanks !\nBye." << endl;
 355                 break;
 356         case SIGINT:
 357         case SIGTERM:
 358                 // no comments
 359                 break;
 360         }
 361
 362         // Deinstall the signal handlers
 363 #ifdef SIGHUP
 364         signal(SIGHUP, SIG_DFL);
 365 #endif
 366         signal(SIGINT, SIG_DFL);
 367         signal(SIGFPE, SIG_DFL);
 368         signal(SIGSEGV, SIG_DFL);
 369         signal(SIGTERM, SIG_DFL);
 370
 371 #ifdef SIGHUP
 372         if (err_sig == SIGSEGV ||
 373             (err_sig != SIGHUP && !getEnv("LYXDEBUG").empty()))
 374 #else
 375         if (err_sig == SIGSEGV || !getEnv("LYXDEBUG").empty())
 376 #endif
 377                 lyx::support::abort();
 378         exit(0);
 379 }
 380
 381 }
 382
 383
 384 void LyX::printError(ErrorItem const & ei)
 385 {
 386         std::cerr << _("LyX: ") << ei.error
 387                   << ':' << ei.description << std::endl;
 388
 389 }
 390
 391
 392 void LyX::init(bool gui)
 393 {
 394 #ifdef SIGHUP
 395         signal(SIGHUP, error_handler);
 396 #endif
 397         signal(SIGFPE, error_handler);
 398         signal(SIGSEGV, error_handler);
 399         signal(SIGINT, error_handler);
 400         signal(SIGTERM, error_handler);
 401         // SIGPIPE can be safely ignored.
 402
 403 #if !defined (USE_POSIX_PACKAGING)
 404         // Add the directory containing the LyX executable to the path
 405         // so that LyX can find things like reLyX.
 406         if (package().build_support().empty())
 407                 prependEnvPath("PATH", package().binary_dir());
 408 #endif
 409
 410         // Check that user LyX directory is ok. We don't do that if
 411         // running in batch mode.
 412         bool reconfigure = false;
 413         if (gui) {
 414                 reconfigure =
 415                         queryUserLyXDir(package().explicit_user_support());
 416         } else {
 417                 first_start = false;
 418         }
 419
 420         // Disable gui when easyparse says so
 421         lyx_gui::use_gui = gui;
 422
 423         lyxrc.tempdir_path = package().temp_dir();
 424         lyxrc.document_path = package().document_dir();
 425
 426         if (lyxrc.template_path.empty()) {
 427                 lyxrc.template_path = AddPath(package().system_support(),
 428                                               "templates");
 429         }
 430
 431         if (lyxrc.lastfiles.empty()) {
 432                 lyxrc.lastfiles = AddName(package().user_support(), "lastfiles");
 433         }
 434
 435         if (lyxrc.roman_font_name.empty())
 436                 lyxrc.roman_font_name = lyx_gui::roman_font_name();
 437         if (lyxrc.sans_font_name.empty())
 438                 lyxrc.sans_font_name = lyx_gui::sans_font_name();
 439         if (lyxrc.typewriter_font_name.empty())
 440                 lyxrc.typewriter_font_name = lyx_gui::typewriter_font_name();
 441
 442         //
 443         // Read configuration files
 444         //
 445
 446         readRcFile("lyxrc.defaults");
 447         system_lyxrc = lyxrc;
 448         system_formats = formats;
 449         system_converters = converters;
 450         system_movers = movers;
 451         system_lcolor = lcolor;
 452
 453         string prefsfile = "preferences";
 454         // back compatibility to lyxs < 1.1.6
 455         if (LibFileSearch(string(), prefsfile).empty())
 456                 prefsfile = "lyxrc";
 457         if (!LibFileSearch(string(), prefsfile).empty())
 458                 readRcFile(prefsfile);
 459
 460         readEncodingsFile("encodings");
 461         readLanguagesFile("languages");
 462
 463         // Load the layouts
 464         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 465         LyXSetStyle();
 466
 467         if (gui) {
 468                 // Set up bindings
 469                 toplevel_keymap.reset(new kb_keymap);
 470                 defaultKeyBindings(toplevel_keymap.get());
 471                 toplevel_keymap->read(lyxrc.bind_file);
 472
 473                 // Read menus
 474                 readUIFile(lyxrc.ui_file);
 475         }
 476
 477         if (lyxerr.debugging(Debug::LYXRC))
 478                 lyxrc.print();
 479
 480         os::cygwin_path_fix(lyxrc.cygwin_path_fix);
 481         if (!lyxrc.path_prefix.empty())
 482                 prependEnvPath("PATH", lyxrc.path_prefix);
 483
 484         // Having reset the PATH we're now in a position to run configure
 485         // if necessary.
 486         if (reconfigure)
 487                 reconfigureUserLyXDir();
 488
 489         if (fs::exists(lyxrc.document_path) &&
 490             fs::is_directory(lyxrc.document_path))
 491                 package().document_dir() = lyxrc.document_path;
 492
 493         package().temp_dir() = createLyXTmpDir(lyxrc.tempdir_path);
 494         if (package().temp_dir().empty()) {
 495                 Alert::error(_("Could not create temporary directory"),
 496                              bformat(_("Could not create a temporary directory in\n"
 497                                        "%1$s. Make sure that this\n"
 498                                        "path exists and is writable and try again."),
 499                                      lyxrc.tempdir_path));
 500                 // createLyXTmpDir() tries sufficiently hard to create a
 501                 // usable temp dir, so the probability to come here is
 502                 // close to zero. We therefore don't try to overcome this
 503                 // problem with e.g. asking the user for a new path and
 504                 // trying again but simply exit.
 505                 exit(EXIT_FAILURE);
 506         }
 507
 508         if (lyxerr.debugging(Debug::INIT)) {
 509                 lyxerr << "LyX tmp dir: `" << package().temp_dir() << '\'' << endl;
 510         }
 511
 512         lyxerr[Debug::INIT] << "Reading lastfiles `"
 513                             << lyxrc.lastfiles << "'..." << endl;
 514         lastfiles_.reset(new LastFiles(lyxrc.lastfiles,
 515                                        lyxrc.check_lastfiles,
 516                                        lyxrc.num_lastfiles));
 517 }
 518
 519
 520 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 521 {
 522         kbmap->bind("Right", FuncRequest(LFUN_RIGHT));
 523         kbmap->bind("Left", FuncRequest(LFUN_LEFT));
 524         kbmap->bind("Up", FuncRequest(LFUN_UP));
 525         kbmap->bind("Down", FuncRequest(LFUN_DOWN));
 526
 527         kbmap->bind("Tab", FuncRequest(LFUN_CELL_FORWARD));
 528         kbmap->bind("ISO_Left_Tab", FuncRequest(LFUN_CELL_FORWARD));
 529
 530         kbmap->bind("Home", FuncRequest(LFUN_HOME));
 531         kbmap->bind("End", FuncRequest(LFUN_END));
 532         kbmap->bind("Prior", FuncRequest(LFUN_PRIOR));
 533         kbmap->bind("Next", FuncRequest(LFUN_NEXT));
 534
 535         kbmap->bind("Return", FuncRequest(LFUN_BREAKPARAGRAPH));
 536         //kbmap->bind("~C-~S-~M-nobreakspace", FuncRequest(LFUN_PROTECTEDSPACE));
 537
 538         kbmap->bind("Delete", FuncRequest(LFUN_DELETE));
 539         kbmap->bind("BackSpace", FuncRequest(LFUN_BACKSPACE));
 540
 541         // kbmap->bindings to enable the use of the numeric keypad
 542         // e.g. Num Lock set
 543         //kbmap->bind("KP_0", FuncRequest(LFUN_SELFINSERT));
 544         //kbmap->bind("KP_Decimal", FuncRequest(LFUN_SELFINSERT));
 545         kbmap->bind("KP_Enter", FuncRequest(LFUN_BREAKPARAGRAPH));
 546         //kbmap->bind("KP_1", FuncRequest(LFUN_SELFINSERT));
 547         //kbmap->bind("KP_2", FuncRequest(LFUN_SELFINSERT));
 548         //kbmap->bind("KP_3", FuncRequest(LFUN_SELFINSERT));
 549         //kbmap->bind("KP_4", FuncRequest(LFUN_SELFINSERT));
 550         //kbmap->bind("KP_5", FuncRequest(LFUN_SELFINSERT));
 551         //kbmap->bind("KP_6", FuncRequest(LFUN_SELFINSERT));
 552         //kbmap->bind("KP_Add", FuncRequest(LFUN_SELFINSERT));
 553         //kbmap->bind("KP_7", FuncRequest(LFUN_SELFINSERT));
 554         //kbmap->bind("KP_8", FuncRequest(LFUN_SELFINSERT));
 555         //kbmap->bind("KP_9", FuncRequest(LFUN_SELFINSERT));
 556         //kbmap->bind("KP_Divide", FuncRequest(LFUN_SELFINSERT));
 557         //kbmap->bind("KP_Multiply", FuncRequest(LFUN_SELFINSERT));
 558         //kbmap->bind("KP_Subtract", FuncRequest(LFUN_SELFINSERT));
 559         kbmap->bind("KP_Right", FuncRequest(LFUN_RIGHT));
 560         kbmap->bind("KP_Left", FuncRequest(LFUN_LEFT));
 561         kbmap->bind("KP_Up", FuncRequest(LFUN_UP));
 562         kbmap->bind("KP_Down", FuncRequest(LFUN_DOWN));
 563         kbmap->bind("KP_Home", FuncRequest(LFUN_HOME));
 564         kbmap->bind("KP_End", FuncRequest(LFUN_END));
 565         kbmap->bind("KP_Prior", FuncRequest(LFUN_PRIOR));
 566         kbmap->bind("KP_Next", FuncRequest(LFUN_NEXT));
 567
 568         kbmap->bind("C-Tab", FuncRequest(LFUN_CELL_SPLIT));
 569         kbmap->bind("S-Tab", FuncRequest(LFUN_CELL_BACKWARD));
 570         kbmap->bind("S-ISO_Left_Tab", FuncRequest(LFUN_CELL_BACKWARD));
 571 }
 572
 573
 574 void LyX::emergencyCleanup() const
 575 {
 576         // what to do about tmpfiles is non-obvious. we would
 577         // like to delete any we find, but our lyxdir might
 578         // contain documents etc. which might be helpful on
 579         // a crash
 580
 581         bufferlist.emergencyWriteAll();
 582         if (lyxserver)
 583                 lyxserver->emergencyCleanup();
 584 }
 585
 586
 587 void LyX::deadKeyBindings(kb_keymap * kbmap)
 588 {
 589         // bindKeyings for transparent handling of deadkeys
 590         // The keysyms are gotten from XFree86 X11R6
 591         kbmap->bind("~C-~S-~M-dead_acute", FuncRequest(LFUN_ACUTE));
 592         kbmap->bind("~C-~S-~M-dead_breve", FuncRequest(LFUN_BREVE));
 593         kbmap->bind("~C-~S-~M-dead_caron", FuncRequest(LFUN_CARON));
 594         kbmap->bind("~C-~S-~M-dead_cedilla", FuncRequest(LFUN_CEDILLA));
 595         kbmap->bind("~C-~S-~M-dead_abovering", FuncRequest(LFUN_CIRCLE));
 596         kbmap->bind("~C-~S-~M-dead_circumflex", FuncRequest(LFUN_CIRCUMFLEX));
 597         kbmap->bind("~C-~S-~M-dead_abovedot", FuncRequest(LFUN_DOT));
 598         kbmap->bind("~C-~S-~M-dead_grave", FuncRequest(LFUN_GRAVE));
 599         kbmap->bind("~C-~S-~M-dead_doubleacute", FuncRequest(LFUN_HUNG_UMLAUT));
 600         kbmap->bind("~C-~S-~M-dead_macron", FuncRequest(LFUN_MACRON));
 601         // nothing with this name
 602         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 603         kbmap->bind("~C-~S-~M-dead_tilde", FuncRequest(LFUN_TILDE));
 604         kbmap->bind("~C-~S-~M-dead_diaeresis", FuncRequest(LFUN_UMLAUT));
 605         // nothing with this name either...
 606         //kbmap->bind("~C-~S-~M-dead_underbar", FuncRequest(LFUN_UNDERBAR));
 607         kbmap->bind("~C-~S-~M-dead_belowdot", FuncRequest(LFUN_UNDERDOT));
 608         kbmap->bind("~C-~S-~M-dead_tie", FuncRequest(LFUN_TIE));
 609         kbmap->bind("~C-~S-~M-dead_ogonek",FuncRequest(LFUN_OGONEK));
 610 }
 611
 612
 613 bool LyX::queryUserLyXDir(bool explicit_userdir)
 614 {
 615         bool reconfigure = false;
 616
 617         // Does user directory exist?
 618         if (fs::exists(package().user_support()) &&
 619             fs::is_directory(package().user_support())) {
 620                 first_start = false;
 621                 string const configure_script =
 622                         AddName(package().system_support(), "configure");
 623                 string const userDefaults =
 624                         AddName(package().user_support(), "lyxrc.defaults");
 625                 if (fs::exists(configure_script) &&
 626                     fs::exists(userDefaults) &&
 627                     fs::last_write_time(configure_script)
 628                     > fs::last_write_time(userDefaults)) {
 629                         reconfigure = true;
 630                 }
 631                 return reconfigure;
 632         }
 633
 634         first_start = !explicit_userdir;
 635
 636         // If the user specified explicitly a directory, ask whether
 637         // to create it. If the user says "no", then exit.
 638         if (explicit_userdir &&
 639             Alert::prompt(
 640                     _("Missing LyX support directory"),
 641                     bformat(_("You have specified a non-existent user "
 642                               "LyX directory, %1$s.\n"
 643                               "It is needed to keep your own configuration."),
 644                             package().user_support()),
 645                     1, 0,
 646                     _("&Create directory."),
 647                     _("&Exit LyX."))) {
 648                 lyxerr << _("No user LyX directory. Exiting.") << endl;
 649                 exit(1);
 650         }
 651
 652         lyxerr << bformat(_("LyX: Creating directory %1$s"),
 653                           package().user_support())
 654                << endl;
 655         reconfigure = true;
 656
 657         if (!createDirectory(package().user_support(), 0755)) {
 658                 // Failed, so let's exit.
 659                 lyxerr << _("Failed to create directory. Exiting.")
 660                        << endl;
 661                 exit(1);
 662         }
 663
 664         return reconfigure;
 665 }
 666
 667
 668 void LyX::readRcFile(string const & name)
 669 {
 670         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 671
 672         string const lyxrc_path = LibFileSearch(string(), name);
 673         if (!lyxrc_path.empty()) {
 674
 675                 lyxerr[Debug::INIT] << "Found " << name
 676                                     << " in " << lyxrc_path << endl;
 677
 678                 if (lyxrc.read(lyxrc_path) >= 0)
 679                         return;
 680         }
 681
 682         showFileError(name);
 683 }
 684
 685
 686 // Read the ui file `name'
 687 void LyX::readUIFile(string const & name)
 688 {
 689         enum Uitags {
 690                 ui_menuset = 1,
 691                 ui_toolbar,
 692                 ui_toolbars,
 693                 ui_include,
 694                 ui_last
 695         };
 696
 697         struct keyword_item uitags[ui_last - 1] = {
 698                 { "include", ui_include },
 699                 { "menuset", ui_menuset },
 700                 { "toolbar", ui_toolbar },
 701                 { "toolbars", ui_toolbars }
 702         };
 703
 704         // Ensure that a file is read only once (prevents include loops)
 705         static std::list<string> uifiles;
 706         std::list<string>::const_iterator it  = uifiles.begin();
 707         std::list<string>::const_iterator end = uifiles.end();
 708         it = std::find(it, end, name);
 709         if (it != end) {
 710                 lyxerr[Debug::INIT] << "UI file '" << name
 711                                     << "' has been read already. "
 712                                     << "Is this an include loop?"
 713                                     << endl;
 714                 return;
 715         }
 716
 717         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 718
 719         string const ui_path = LibFileSearch("ui", name, "ui");
 720
 721         if (ui_path.empty()) {
 722                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 723                 showFileError(name);
 724                 return;
 725         }
 726         uifiles.push_back(name);
 727
 728         lyxerr[Debug::INIT] << "Found " << name
 729                             << " in " << ui_path << endl;
 730         LyXLex lex(uitags, ui_last - 1);
 731         lex.setFile(ui_path);
 732         if (!lex.isOK()) {
 733                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 734                        << endl;
 735         }
 736
 737         if (lyxerr.debugging(Debug::PARSER))
 738                 lex.printTable(lyxerr);
 739
 740         while (lex.isOK()) {
 741                 switch (lex.lex()) {
 742                 case ui_include: {
 743                         lex.next(true);
 744                         string const file = lex.getString();
 745                         readUIFile(file);
 746                         break;
 747                 }
 748                 case ui_menuset:
 749                         menubackend.read(lex);
 750                         break;
 751
 752                 case ui_toolbar:
 753                         toolbarbackend.read(lex);
 754                         break;
 755
 756                 case ui_toolbars:
 757                         toolbarbackend.readToolbars(lex);
 758                         break;
 759
 760                 default:
 761                         if (!rtrim(lex.getString()).empty())
 762                                 lex.printError("LyX::ReadUIFile: "
 763                                                "Unknown menu tag: `$$Token'");
 764                         break;
 765                 }
 766         }
 767 }
 768
 769
 770 // Read the languages file `name'
 771 void LyX::readLanguagesFile(string const & name)
 772 {
 773         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 774
 775         string const lang_path = LibFileSearch(string(), name);
 776         if (lang_path.empty()) {
 777                 showFileError(name);
 778                 return;
 779         }
 780         languages.read(lang_path);
 781 }
 782
 783
 784 // Read the encodings file `name'
 785 void LyX::readEncodingsFile(string const & name)
 786 {
 787         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 788
 789         string const enc_path = LibFileSearch(string(), name);
 790         if (enc_path.empty()) {
 791                 showFileError(name);
 792                 return;
 793         }
 794         encodings.read(enc_path);
 795 }
 796
 797
 798 namespace {
 799
 800 bool is_gui = true;
 801 string batch;
 802
 803 /// return the the number of arguments consumed
 804 typedef boost::function<int(string const &, string const &)> cmd_helper;
 805
 806 int parse_dbg(string const & arg, string const &)
 807 {
 808         if (arg.empty()) {
 809                 lyxerr << _("List of supported debug flags:") << endl;
 810                 Debug::showTags(lyxerr);
 811                 exit(0);
 812         }
 813         lyxerr << bformat(_("Setting debug level to %1$s"), arg) << endl;
 814
 815         lyxerr.level(Debug::value(arg));
 816         Debug::showLevel(lyxerr, lyxerr.level());
 817         return 1;
 818 }
 819
 820
 821 int parse_help(string const &, string const &)
 822 {
 823         lyxerr <<
 824                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 825                   "Command line switches (case sensitive):\n"
 826                   "\t-help              summarize LyX usage\n"
 827                   "\t-userdir dir       try to set user directory to dir\n"
 828                   "\t-sysdir dir        try to set system directory to dir\n"
 829                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 830                   "\t-dbg feature[,feature]...\n"
 831                   "                  select the features to debug.\n"
 832                   "                  Type `lyx -dbg' to see the list of features\n"
 833                   "\t-x [--execute] command\n"
 834                   "                  where command is a lyx command.\n"
 835                   "\t-e [--export] fmt\n"
 836                   "                  where fmt is the export format of choice.\n"
 837                   "\t-i [--import] fmt file.xxx\n"
 838                   "                  where fmt is the import format of choice\n"
 839                   "                  and file.xxx is the file to be imported.\n"
 840                   "\t-version        summarize version and build info\n"
 841                   "Check the LyX man page for more details.") << endl;
 842         exit(0);
 843         return 0;
 844 }
 845
 846 int parse_version(string const &, string const &)
 847 {
 848         lyxerr << "LyX " << lyx_version
 849                << " of " << lyx_release_date << endl;
 850         lyxerr << "Built on " << __DATE__ << ", " << __TIME__ << endl;
 851
 852         lyxerr << lyx_version_info << endl;
 853         exit(0);
 854         return 0;
 855 }
 856
 857 int parse_sysdir(string const & arg, string const &)
 858 {
 859         if (arg.empty()) {
 860                 lyxerr << _("Missing directory for -sysdir switch") << endl;
 861                 exit(1);
 862         }
 863         cl_system_support = arg;
 864         return 1;
 865 }
 866
 867 int parse_userdir(string const & arg, string const &)
 868 {
 869         if (arg.empty()) {
 870                 lyxerr << _("Missing directory for -userdir switch") << endl;
 871                 exit(1);
 872         }
 873         cl_user_support = arg;
 874         return 1;
 875 }
 876
 877 int parse_execute(string const & arg, string const &)
 878 {
 879         if (arg.empty()) {
 880                 lyxerr << _("Missing command string after --execute switch") << endl;
 881                 exit(1);
 882         }
 883         batch = arg;
 884         // Argh. Setting gui to false segfaults..
 885         // FIXME: when ? how ?
 886         // is_gui = false;
 887         return 1;
 888 }
 889
 890 int parse_export(string const & type, string const &)
 891 {
 892         if (type.empty()) {
 893                 lyxerr << _("Missing file type [eg latex, ps...] after "
 894                         "--export switch") << endl;
 895                 exit(1);
 896         }
 897         batch = "buffer-export " + type;
 898         is_gui = false;
 899         return 1;
 900 }
 901
 902 int parse_import(string const & type, string const & file)
 903 {
 904         if (type.empty()) {
 905                 lyxerr << _("Missing file type [eg latex, ps...] after "
 906                         "--import switch") << endl;
 907                 exit(1);
 908         }
 909         if (file.empty()) {
 910                 lyxerr << _("Missing filename for --import") << endl;
 911                 exit(1);
 912         }
 913
 914         batch = "buffer-import " + type + ' ' + file;
 915         return 2;
 916 }
 917
 918 } // namespace anon
 919
 920
 921 bool LyX::easyParse(int & argc, char * argv[])
 922 {
 923         std::map<string, cmd_helper> cmdmap;
 924
 925         cmdmap["-dbg"] = parse_dbg;
 926         cmdmap["-help"] = parse_help;
 927         cmdmap["--help"] = parse_help;
 928         cmdmap["-version"] = parse_version;
 929         cmdmap["--version"] = parse_version;
 930         cmdmap["-sysdir"] = parse_sysdir;
 931         cmdmap["-userdir"] = parse_userdir;
 932         cmdmap["-x"] = parse_execute;
 933         cmdmap["--execute"] = parse_execute;
 934         cmdmap["-e"] = parse_export;
 935         cmdmap["--export"] = parse_export;
 936         cmdmap["-i"] = parse_import;
 937         cmdmap["--import"] = parse_import;
 938
 939         for (int i = 1; i < argc; ++i) {
 940                 std::map<string, cmd_helper>::const_iterator it
 941                         = cmdmap.find(argv[i]);
 942
 943                 // don't complain if not found - may be parsed later
 944                 if (it == cmdmap.end())
 945                         continue;
 946
 947                 string arg((i + 1 < argc) ? argv[i + 1] : "");
 948                 string arg2((i + 2 < argc) ? argv[i + 2] : "");
 949
 950                 int const remove = 1 + it->second(arg, arg2);
 951
 952                 // Now, remove used arguments by shifting
 953                 // the following ones remove places down.
 954                 argc -= remove;
 955                 for (int j = i; j < argc; ++j)
 956                         argv[j] = argv[j + remove];
 957                 --i;
 958         }
 959
 960         batch_command = batch;
 961
 962         return is_gui;
 963 }