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