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