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/FileInfo.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
  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::FileInfo;
  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
  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
 210         if (want_gui)
 211                 lyx_gui::parse_init(argc, argv);
 212
 213         // check for any spurious extra arguments
 214         // other than documents
 215         for (int argi = 1; argi < argc ; ++argi) {
 216                 if (argv[argi][0] == '-') {
 217                         lyxerr << bformat(_("Wrong command line option `%1$s'. Exiting."),
 218                                 argv[argi]) << endl;
 219                         exit(1);
 220                 }
 221         }
 222
 223         // Initialization of LyX (reads lyxrc and more)
 224         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 225         init(want_gui);
 226         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 227
 228         if (want_gui)
 229                 lyx_gui::parse_lyxrc();
 230
 231         initMath();
 232
 233         vector<string> files;
 234
 235         for (int argi = argc - 1; argi >= 1; --argi)
 236                 files.push_back(argv[argi]);
 237
 238         if (first_start)
 239                 files.push_back(i18nLibFileSearch("examples", "splash.lyx"));
 240
 241         // Execute batch commands if available
 242         if (!batch_command.empty()) {
 243
 244                 lyxerr[Debug::INIT] << "About to handle -x '"
 245                        << batch_command << '\'' << endl;
 246
 247                 Buffer * last_loaded = 0;
 248
 249                 vector<string>::const_iterator it = files.begin();
 250                 vector<string>::const_iterator end = files.end();
 251
 252                 for (; it != end; ++it) {
 253                         // get absolute path of file and add ".lyx" to
 254                         // the filename if necessary
 255                         string s = FileSearch(string(), *it, "lyx");
 256                         if (s.empty()) {
 257                                 last_loaded = newFile(*it, string(), true);
 258                         } else {
 259                                 Buffer * buf = bufferlist.newBuffer(s, false);
 260                                 buf->error.connect(boost::bind(&LyX::printError, this, _1));
 261                                 if (loadLyXFile(buf, s))
 262                                         last_loaded = buf;
 263                                 else
 264                                         bufferlist.release(buf);
 265                         }
 266                 }
 267
 268                 // try to dispatch to last loaded buffer first
 269                 if (last_loaded) {
 270                         bool success = false;
 271                         if (last_loaded->dispatch(batch_command, &success)) {
 272                                 QuitLyX();
 273                                 exit(!success);
 274                         }
 275                 }
 276                 files.clear(); // the files are already loaded
 277         }
 278
 279         lyx_gui::start(batch_command, files);
 280 }
 281
 282
 283 extern "C" {
 284
 285 static void error_handler(int err_sig)
 286 {
 287         // Throw away any signals other than the first one received.
 288         static sig_atomic_t handling_error = false;
 289         if (handling_error)
 290                 return;
 291         handling_error = true;
 292
 293         // We have received a signal indicating a fatal error, so
 294         // try and save the data ASAP.
 295         LyX::cref().emergencyCleanup();
 296
 297         // These lyxerr calls may or may not work:
 298
 299         // Signals are asynchronous, so the main program may be in a very
 300         // fragile state when a signal is processed and thus while a signal
 301         // handler function executes.
 302         // In general, therefore, we should avoid performing any
 303         // I/O operations or calling most library and system functions from
 304         // signal handlers.
 305
 306         // This shouldn't matter here, however, as we've already invoked
 307         // emergencyCleanup.
 308         switch (err_sig) {
 309         case SIGHUP:
 310                 lyxerr << "\nlyx: SIGHUP signal caught\nBye." << endl;
 311                 break;
 312         case SIGFPE:
 313                 lyxerr << "\nlyx: SIGFPE signal caught\nBye." << endl;
 314                 break;
 315         case SIGSEGV:
 316                 lyxerr << "\nlyx: SIGSEGV signal caught\n"
 317                           "Sorry, you have found a bug in LyX. "
 318                           "Please read the bug-reporting instructions "
 319                           "in Help->Introduction and send us a bug report, "
 320                           "if necessary. Thanks !\nBye." << endl;
 321                 break;
 322         case SIGINT:
 323         case SIGTERM:
 324                 // no comments
 325                 break;
 326         }
 327
 328         // Deinstall the signal handlers
 329         signal(SIGHUP, SIG_DFL);
 330         signal(SIGINT, SIG_DFL);
 331         signal(SIGFPE, SIG_DFL);
 332         signal(SIGSEGV, SIG_DFL);
 333         signal(SIGTERM, SIG_DFL);
 334
 335         if (err_sig == SIGSEGV ||
 336             (err_sig != SIGHUP && !GetEnv("LYXDEBUG").empty()))
 337                 lyx::support::abort();
 338         exit(0);
 339 }
 340
 341 }
 342
 343
 344 void LyX::printError(ErrorItem const & ei)
 345 {
 346         std::cerr << _("LyX: ") << ei.error
 347                   << ':' << ei.description << std::endl;
 348
 349 }
 350
 351
 352 void LyX::init(bool gui)
 353 {
 354         signal(SIGHUP, error_handler);
 355         signal(SIGFPE, error_handler);
 356         signal(SIGSEGV, error_handler);
 357         signal(SIGINT, error_handler);
 358         signal(SIGTERM, error_handler);
 359         // SIGPIPE can be safely ignored.
 360
 361 #if !defined (USE_POSIX_PACKAGING)
 362         // Add the directory containing the LyX executable to the path
 363         // so that LyX can find things like reLyX.
 364         if (package.build_support().empty())
 365                 prependEnvPath("PATH", package.binary_dir());
 366 #endif
 367
 368         // Check that user LyX directory is ok. We don't do that if
 369         // running in batch mode.
 370         bool reconfigure = false;
 371         if (gui) {
 372                 reconfigure =
 373                         queryUserLyXDir(package().explicit_user_support());
 374         } else {
 375                 first_start = false;
 376         }
 377
 378         // Disable gui when easyparse says so
 379         lyx_gui::use_gui = gui;
 380
 381         lyxrc.tempdir_path = package().temp_dir();
 382         lyxrc.document_path = package().document_dir();
 383
 384         if (lyxrc.template_path.empty()) {
 385                 lyxrc.template_path = AddPath(package().system_support(),
 386                                               "templates");
 387         }
 388
 389         if (lyxrc.lastfiles.empty()) {
 390                 lyxrc.lastfiles = AddName(package().user_support(), "lastfiles");
 391         }
 392
 393         if (lyxrc.roman_font_name.empty())
 394                 lyxrc.roman_font_name = lyx_gui::roman_font_name();
 395         if (lyxrc.sans_font_name.empty())
 396                 lyxrc.sans_font_name = lyx_gui::sans_font_name();
 397         if (lyxrc.typewriter_font_name.empty())
 398                 lyxrc.typewriter_font_name = lyx_gui::typewriter_font_name();
 399
 400         //
 401         // Read configuration files
 402         //
 403
 404         readRcFile("lyxrc.defaults");
 405         system_lyxrc = lyxrc;
 406         system_formats = formats;
 407         system_converters = converters;
 408         system_movers = movers;
 409         system_lcolor = lcolor;
 410
 411         string prefsfile = "preferences";
 412         // back compatibility to lyxs < 1.1.6
 413         if (LibFileSearch(string(), prefsfile).empty())
 414                 prefsfile = "lyxrc";
 415         if (!LibFileSearch(string(), prefsfile).empty())
 416                 readRcFile(prefsfile);
 417
 418         readEncodingsFile("encodings");
 419         readLanguagesFile("languages");
 420
 421         // Load the layouts
 422         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 423         LyXSetStyle();
 424
 425         if (gui) {
 426                 // Set up bindings
 427                 toplevel_keymap.reset(new kb_keymap);
 428                 defaultKeyBindings(toplevel_keymap.get());
 429                 toplevel_keymap->read(lyxrc.bind_file);
 430
 431                 // Read menus
 432                 readUIFile(lyxrc.ui_file);
 433         }
 434
 435         if (lyxerr.debugging(Debug::LYXRC))
 436                 lyxrc.print();
 437
 438         os::cygwin_path_fix(lyxrc.cygwin_path_fix);
 439         prependEnvPath("PATH", lyxrc.path_prefix);
 440
 441         // Having reset the PATH we're now in a position to run configure
 442         // if necessary.
 443         if (reconfigure)
 444                 reconfigureUserLyXDir();
 445
 446         FileInfo fi(lyxrc.document_path);
 447         if (fi.isOK() && fi.isDir())
 448                 package().document_dir() = lyxrc.document_path;
 449
 450         package().temp_dir() = createLyXTmpDir(lyxrc.tempdir_path);
 451         if (package().temp_dir().empty()) {
 452                 Alert::error(_("Could not create temporary directory"),
 453                              bformat(_("Could not create a temporary directory in\n"
 454                                        "%1$s. Make sure that this\n"
 455                                        "path exists and is writable and try again."),
 456                                      lyxrc.tempdir_path));
 457                 // createLyXTmpDir() tries sufficiently hard to create a
 458                 // usable temp dir, so the probability to come here is
 459                 // close to zero. We therefore don't try to overcome this
 460                 // problem with e.g. asking the user for a new path and
 461                 // trying again but simply exit.
 462                 exit(EXIT_FAILURE);
 463         }
 464
 465         if (lyxerr.debugging(Debug::INIT)) {
 466                 lyxerr << "LyX tmp dir: `" << package().temp_dir() << '\'' << endl;
 467         }
 468
 469         lyxerr[Debug::INIT] << "Reading lastfiles `"
 470                             << lyxrc.lastfiles << "'..." << endl;
 471         lastfiles_.reset(new LastFiles(lyxrc.lastfiles,
 472                                        lyxrc.check_lastfiles,
 473                                        lyxrc.num_lastfiles));
 474 }
 475
 476
 477 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 478 {
 479         kbmap->bind("Right", FuncRequest(LFUN_RIGHT));
 480         kbmap->bind("Left", FuncRequest(LFUN_LEFT));
 481         kbmap->bind("Up", FuncRequest(LFUN_UP));
 482         kbmap->bind("Down", FuncRequest(LFUN_DOWN));
 483
 484         kbmap->bind("Tab", FuncRequest(LFUN_CELL_FORWARD));
 485         kbmap->bind("ISO_Left_Tab", FuncRequest(LFUN_CELL_FORWARD));
 486
 487         kbmap->bind("Home", FuncRequest(LFUN_HOME));
 488         kbmap->bind("End", FuncRequest(LFUN_END));
 489         kbmap->bind("Prior", FuncRequest(LFUN_PRIOR));
 490         kbmap->bind("Next", FuncRequest(LFUN_NEXT));
 491
 492         kbmap->bind("Return", FuncRequest(LFUN_BREAKPARAGRAPH));
 493         //kbmap->bind("~C-~S-~M-nobreakspace", FuncRequest(LFUN_PROTECTEDSPACE));
 494
 495         kbmap->bind("Delete", FuncRequest(LFUN_DELETE));
 496         kbmap->bind("BackSpace", FuncRequest(LFUN_BACKSPACE));
 497
 498         // kbmap->bindings to enable the use of the numeric keypad
 499         // e.g. Num Lock set
 500         //kbmap->bind("KP_0", FuncRequest(LFUN_SELFINSERT));
 501         //kbmap->bind("KP_Decimal", FuncRequest(LFUN_SELFINSERT));
 502         kbmap->bind("KP_Enter", FuncRequest(LFUN_BREAKPARAGRAPH));
 503         //kbmap->bind("KP_1", FuncRequest(LFUN_SELFINSERT));
 504         //kbmap->bind("KP_2", FuncRequest(LFUN_SELFINSERT));
 505         //kbmap->bind("KP_3", FuncRequest(LFUN_SELFINSERT));
 506         //kbmap->bind("KP_4", FuncRequest(LFUN_SELFINSERT));
 507         //kbmap->bind("KP_5", FuncRequest(LFUN_SELFINSERT));
 508         //kbmap->bind("KP_6", FuncRequest(LFUN_SELFINSERT));
 509         //kbmap->bind("KP_Add", FuncRequest(LFUN_SELFINSERT));
 510         //kbmap->bind("KP_7", FuncRequest(LFUN_SELFINSERT));
 511         //kbmap->bind("KP_8", FuncRequest(LFUN_SELFINSERT));
 512         //kbmap->bind("KP_9", FuncRequest(LFUN_SELFINSERT));
 513         //kbmap->bind("KP_Divide", FuncRequest(LFUN_SELFINSERT));
 514         //kbmap->bind("KP_Multiply", FuncRequest(LFUN_SELFINSERT));
 515         //kbmap->bind("KP_Subtract", FuncRequest(LFUN_SELFINSERT));
 516         kbmap->bind("KP_Right", FuncRequest(LFUN_RIGHT));
 517         kbmap->bind("KP_Left", FuncRequest(LFUN_LEFT));
 518         kbmap->bind("KP_Up", FuncRequest(LFUN_UP));
 519         kbmap->bind("KP_Down", FuncRequest(LFUN_DOWN));
 520         kbmap->bind("KP_Home", FuncRequest(LFUN_HOME));
 521         kbmap->bind("KP_End", FuncRequest(LFUN_END));
 522         kbmap->bind("KP_Prior", FuncRequest(LFUN_PRIOR));
 523         kbmap->bind("KP_Next", FuncRequest(LFUN_NEXT));
 524
 525         kbmap->bind("C-Tab", FuncRequest(LFUN_CELL_SPLIT));
 526         kbmap->bind("S-Tab", FuncRequest(LFUN_CELL_BACKWARD));
 527         kbmap->bind("S-ISO_Left_Tab", FuncRequest(LFUN_CELL_BACKWARD));
 528 }
 529
 530
 531 void LyX::emergencyCleanup() const
 532 {
 533         // what to do about tmpfiles is non-obvious. we would
 534         // like to delete any we find, but our lyxdir might
 535         // contain documents etc. which might be helpful on
 536         // a crash
 537
 538         bufferlist.emergencyWriteAll();
 539         if (lyxserver)
 540                 lyxserver->emergencyCleanup();
 541 }
 542
 543
 544 void LyX::deadKeyBindings(kb_keymap * kbmap)
 545 {
 546         // bindKeyings for transparent handling of deadkeys
 547         // The keysyms are gotten from XFree86 X11R6
 548         kbmap->bind("~C-~S-~M-dead_acute", FuncRequest(LFUN_ACUTE));
 549         kbmap->bind("~C-~S-~M-dead_breve", FuncRequest(LFUN_BREVE));
 550         kbmap->bind("~C-~S-~M-dead_caron", FuncRequest(LFUN_CARON));
 551         kbmap->bind("~C-~S-~M-dead_cedilla", FuncRequest(LFUN_CEDILLA));
 552         kbmap->bind("~C-~S-~M-dead_abovering", FuncRequest(LFUN_CIRCLE));
 553         kbmap->bind("~C-~S-~M-dead_circumflex", FuncRequest(LFUN_CIRCUMFLEX));
 554         kbmap->bind("~C-~S-~M-dead_abovedot", FuncRequest(LFUN_DOT));
 555         kbmap->bind("~C-~S-~M-dead_grave", FuncRequest(LFUN_GRAVE));
 556         kbmap->bind("~C-~S-~M-dead_doubleacute", FuncRequest(LFUN_HUNG_UMLAUT));
 557         kbmap->bind("~C-~S-~M-dead_macron", FuncRequest(LFUN_MACRON));
 558         // nothing with this name
 559         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 560         kbmap->bind("~C-~S-~M-dead_tilde", FuncRequest(LFUN_TILDE));
 561         kbmap->bind("~C-~S-~M-dead_diaeresis", FuncRequest(LFUN_UMLAUT));
 562         // nothing with this name either...
 563         //kbmap->bind("~C-~S-~M-dead_underbar", FuncRequest(LFUN_UNDERBAR));
 564         kbmap->bind("~C-~S-~M-dead_belowdot", FuncRequest(LFUN_UNDERDOT));
 565         kbmap->bind("~C-~S-~M-dead_tie", FuncRequest(LFUN_TIE));
 566         kbmap->bind("~C-~S-~M-dead_ogonek",FuncRequest(LFUN_OGONEK));
 567 }
 568
 569
 570 bool LyX::queryUserLyXDir(bool explicit_userdir)
 571 {
 572         bool reconfigure = false;
 573
 574         // Does user directory exist?
 575         FileInfo fileInfo(package().user_support());
 576         if (fileInfo.isOK() && fileInfo.isDir()) {
 577                 first_start = false;
 578                 string const configure_script =
 579                         AddName(package().system_support(), "configure");
 580                 FileInfo script(configure_script);
 581                 FileInfo defaults(AddName(package().user_support(), "lyxrc.defaults"));
 582                 if (defaults.isOK() && script.isOK()
 583                     && defaults.getModificationTime() < script.getModificationTime()) {
 584                         reconfigure = true;
 585                 }
 586                 return reconfigure;
 587         }
 588
 589         first_start = !explicit_userdir;
 590
 591         // If the user specified explicitly a directory, ask whether
 592         // to create it. If the user says "no", then exit.
 593         if (explicit_userdir &&
 594             !Alert::prompt(
 595                     _("Missing LyX support directory"),
 596                     bformat(_("You have specified a non-existent user "
 597                               "LyX directory, %1$s.\n"
 598                               "It is needed to keep your own configuration."),
 599                             package().user_support()),
 600                     1, 0,
 601                     _("&Create directory."),
 602                     _("&Exit LyX."))) {
 603                 lyxerr << _("No user LyX directory. Exiting.") << endl;
 604                 exit(1);
 605         }
 606
 607         lyxerr << bformat(_("LyX: Creating directory %1$s"),
 608                           package().user_support())
 609                << endl;
 610         reconfigure = true;
 611
 612         if (!createDirectory(package().user_support(), 0755)) {
 613                 // Failed, so let's exit.
 614                 lyxerr << _("Failed to create directory. Exiting.")
 615                        << endl;
 616                 exit(1);
 617         }
 618
 619         return reconfigure;
 620 }
 621
 622
 623 void LyX::readRcFile(string const & name)
 624 {
 625         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 626
 627         string const lyxrc_path = LibFileSearch(string(), name);
 628         if (!lyxrc_path.empty()) {
 629
 630                 lyxerr[Debug::INIT] << "Found " << name
 631                                     << " in " << lyxrc_path << endl;
 632
 633                 if (lyxrc.read(lyxrc_path) >= 0)
 634                         return;
 635         }
 636
 637         showFileError(name);
 638 }
 639
 640
 641 // Read the ui file `name'
 642 void LyX::readUIFile(string const & name)
 643 {
 644         enum Uitags {
 645                 ui_menuset = 1,
 646                 ui_toolbar,
 647                 ui_toolbars,
 648                 ui_include,
 649                 ui_last
 650         };
 651
 652         struct keyword_item uitags[ui_last - 1] = {
 653                 { "include", ui_include },
 654                 { "menuset", ui_menuset },
 655                 { "toolbar", ui_toolbar },
 656                 { "toolbars", ui_toolbars }
 657         };
 658
 659         // Ensure that a file is read only once (prevents include loops)
 660         static std::list<string> uifiles;
 661         std::list<string>::const_iterator it  = uifiles.begin();
 662         std::list<string>::const_iterator end = uifiles.end();
 663         it = std::find(it, end, name);
 664         if (it != end) {
 665                 lyxerr[Debug::INIT] << "UI file '" << name
 666                                     << "' has been read already. "
 667                                     << "Is this an include loop?"
 668                                     << endl;
 669                 return;
 670         }
 671
 672         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 673
 674         string const ui_path = LibFileSearch("ui", name, "ui");
 675
 676         if (ui_path.empty()) {
 677                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 678                 showFileError(name);
 679                 return;
 680         }
 681         uifiles.push_back(name);
 682
 683         lyxerr[Debug::INIT] << "Found " << name
 684                             << " in " << ui_path << endl;
 685         LyXLex lex(uitags, ui_last - 1);
 686         lex.setFile(ui_path);
 687         if (!lex.isOK()) {
 688                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 689                        << endl;
 690         }
 691
 692         if (lyxerr.debugging(Debug::PARSER))
 693                 lex.printTable(lyxerr);
 694
 695         while (lex.isOK()) {
 696                 switch (lex.lex()) {
 697                 case ui_include: {
 698                         lex.next(true);
 699                         string const file = lex.getString();
 700                         readUIFile(file);
 701                         break;
 702                 }
 703                 case ui_menuset:
 704                         menubackend.read(lex);
 705                         break;
 706
 707                 case ui_toolbar:
 708                         toolbarbackend.read(lex);
 709                         break;
 710
 711                 case ui_toolbars:
 712                         toolbarbackend.readToolbars(lex);
 713                         break;
 714
 715                 default:
 716                         if (!rtrim(lex.getString()).empty())
 717                                 lex.printError("LyX::ReadUIFile: "
 718                                                "Unknown menu tag: `$$Token'");
 719                         break;
 720                 }
 721         }
 722 }
 723
 724
 725 // Read the languages file `name'
 726 void LyX::readLanguagesFile(string const & name)
 727 {
 728         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 729
 730         string const lang_path = LibFileSearch(string(), name);
 731         if (lang_path.empty()) {
 732                 showFileError(name);
 733                 return;
 734         }
 735         languages.read(lang_path);
 736 }
 737
 738
 739 // Read the encodings file `name'
 740 void LyX::readEncodingsFile(string const & name)
 741 {
 742         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 743
 744         string const enc_path = LibFileSearch(string(), name);
 745         if (enc_path.empty()) {
 746                 showFileError(name);
 747                 return;
 748         }
 749         encodings.read(enc_path);
 750 }
 751
 752
 753 namespace {
 754
 755 bool is_gui = true;
 756 string batch;
 757
 758 /// return the the number of arguments consumed
 759 typedef boost::function<int(string const &, string const &)> cmd_helper;
 760
 761 int parse_dbg(string const & arg, string const &)
 762 {
 763         if (arg.empty()) {
 764                 lyxerr << _("List of supported debug flags:") << endl;
 765                 Debug::showTags(lyxerr);
 766                 exit(0);
 767         }
 768         lyxerr << bformat(_("Setting debug level to %1$s"), arg) << endl;
 769
 770         lyxerr.level(Debug::value(arg));
 771         Debug::showLevel(lyxerr, lyxerr.level());
 772         return 1;
 773 }
 774
 775
 776 int parse_help(string const &, string const &)
 777 {
 778         lyxerr <<
 779                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 780                   "Command line switches (case sensitive):\n"
 781                   "\t-help              summarize LyX usage\n"
 782                   "\t-userdir dir       try to set user directory to dir\n"
 783                   "\t-sysdir dir        try to set system directory to dir\n"
 784                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 785                   "\t-dbg feature[,feature]...\n"
 786                   "                  select the features to debug.\n"
 787                   "                  Type `lyx -dbg' to see the list of features\n"
 788                   "\t-x [--execute] command\n"
 789                   "                  where command is a lyx command.\n"
 790                   "\t-e [--export] fmt\n"
 791                   "                  where fmt is the export format of choice.\n"
 792                   "\t-i [--import] fmt file.xxx\n"
 793                   "                  where fmt is the import format of choice\n"
 794                   "                  and file.xxx is the file to be imported.\n"
 795                   "\t-version        summarize version and build info\n"
 796                   "Check the LyX man page for more details.") << endl;
 797         exit(0);
 798         return 0;
 799 }
 800
 801 int parse_version(string const &, string const &)
 802 {
 803         lyxerr << "LyX " << lyx_version
 804                << " of " << lyx_release_date << endl;
 805         lyxerr << "Built on " << __DATE__ << ", " << __TIME__ << endl;
 806
 807         lyxerr << lyx_version_info << endl;
 808         exit(0);
 809         return 0;
 810 }
 811
 812 int parse_sysdir(string const & arg, string const &)
 813 {
 814         if (arg.empty()) {
 815                 lyxerr << _("Missing directory for -sysdir switch") << endl;
 816                 exit(1);
 817         }
 818         cl_system_support = arg;
 819         return 1;
 820 }
 821
 822 int parse_userdir(string const & arg, string const &)
 823 {
 824         if (arg.empty()) {
 825                 lyxerr << _("Missing directory for -userdir switch") << endl;
 826                 exit(1);
 827         }
 828         cl_user_support = arg;
 829         return 1;
 830 }
 831
 832 int parse_execute(string const & arg, string const &)
 833 {
 834         if (arg.empty()) {
 835                 lyxerr << _("Missing command string after --execute switch") << endl;
 836                 exit(1);
 837         }
 838         batch = arg;
 839         // Argh. Setting gui to false segfaults..
 840         // FIXME: when ? how ?
 841         // is_gui = false;
 842         return 1;
 843 }
 844
 845 int parse_export(string const & type, string const &)
 846 {
 847         if (type.empty()) {
 848                 lyxerr << _("Missing file type [eg latex, ps...] after "
 849                         "--export switch") << endl;
 850                 exit(1);
 851         }
 852         batch = "buffer-export " + type;
 853         is_gui = false;
 854         return 1;
 855 }
 856
 857 int parse_import(string const & type, string const & file)
 858 {
 859         if (type.empty()) {
 860                 lyxerr << _("Missing file type [eg latex, ps...] after "
 861                         "--import switch") << endl;
 862                 exit(1);
 863         }
 864         if (file.empty()) {
 865                 lyxerr << _("Missing filename for --import") << endl;
 866                 exit(1);
 867         }
 868
 869         batch = "buffer-import " + type + ' ' + file;
 870         return 2;
 871 }
 872
 873 } // namespace anon
 874
 875
 876 bool LyX::easyParse(int & argc, char * argv[])
 877 {
 878         std::map<string, cmd_helper> cmdmap;
 879
 880         cmdmap["-dbg"] = parse_dbg;
 881         cmdmap["-help"] = parse_help;
 882         cmdmap["--help"] = parse_help;
 883         cmdmap["-version"] = parse_version;
 884         cmdmap["--version"] = parse_version;
 885         cmdmap["-sysdir"] = parse_sysdir;
 886         cmdmap["-userdir"] = parse_userdir;
 887         cmdmap["-x"] = parse_execute;
 888         cmdmap["--execute"] = parse_execute;
 889         cmdmap["-e"] = parse_export;
 890         cmdmap["--export"] = parse_export;
 891         cmdmap["-i"] = parse_import;
 892         cmdmap["--import"] = parse_import;
 893
 894         for (int i = 1; i < argc; ++i) {
 895                 std::map<string, cmd_helper>::const_iterator it
 896                         = cmdmap.find(argv[i]);
 897
 898                 // don't complain if not found - may be parsed later
 899                 if (it == cmdmap.end())
 900                         continue;
 901
 902                 string arg((i + 1 < argc) ? argv[i + 1] : "");
 903                 string arg2((i + 2 < argc) ? argv[i + 2] : "");
 904
 905                 int const remove = 1 + it->second(arg, arg2);
 906
 907                 // Now, remove used arguments by shifting
 908                 // the following ones remove places down.
 909                 argc -= remove;
 910                 for (int j = i; j < argc; ++j)
 911                         argv[j] = argv[j + remove];
 912                 --i;
 913         }
 914
 915         batch_command = batch;
 916
 917         return is_gui;
 918 }