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 "session.h"
  32 #include "LColor.h"
  33 #include "lyx_cb.h"
  34 #include "lyxfunc.h"
  35 #include "lyxlex.h"
  36 #include "lyxrc.h"
  37 #include "lyxserver.h"
  38 #include "lyxtextclasslist.h"
  39 #include "MenuBackend.h"
  40 #include "mover.h"
  41 #include "ToolbarBackend.h"
  42
  43 #include "frontends/Alert.h"
  44 #include "frontends/Application.h"
  45 #include "frontends/lyx_gui.h"
  46 #include "frontends/LyXView.h"
  47
  48 #include "support/environment.h"
  49 #include "support/filetools.h"
  50 #include "support/fontutils.h"
  51 #include "support/lyxlib.h"
  52 #include "support/convert.h"
  53 #include "support/os.h"
  54 #include "support/package.h"
  55 #include "support/path.h"
  56 #include "support/systemcall.h"
  57
  58 #include <boost/bind.hpp>
  59 #include <boost/filesystem/operations.hpp>
  60
  61 #include <iostream>
  62 #include <csignal>
  63
  64 using lyx::support::addName;
  65 using lyx::support::addPath;
  66 using lyx::support::bformat;
  67 using lyx::support::createDirectory;
  68 using lyx::support::createLyXTmpDir;
  69 using lyx::support::fileSearch;
  70 using lyx::support::getEnv;
  71 using lyx::support::i18nLibFileSearch;
  72 using lyx::support::libFileSearch;
  73 using lyx::support::package;
  74 using lyx::support::prependEnvPath;
  75 using lyx::support::rtrim;
  76 using lyx::support::Systemcall;
  77
  78 using lyx::docstring;
  79
  80 namespace os = lyx::support::os;
  81 namespace fs = boost::filesystem;
  82
  83 using std::endl;
  84 using std::string;
  85 using std::vector;
  86 using std::for_each;
  87
  88 #ifndef CXX_GLOBAL_CSTD
  89 using std::exit;
  90 using std::signal;
  91 using std::system;
  92 #endif
  93
  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 lyx_exit(int status)
 107 {
 108         // FIXME: We should not directly call exit(), since it only
 109         // guarantees a return to the system, no application cleanup.
 110         // This may cause troubles with not executed destructors.
 111         if (lyx_gui::use_gui) {
 112                 theApp->exit(status);
 113                 // Restore original font resources after Application is destroyed.
 114                 lyx::support::restoreFontResources();
 115         }
 116
 117         exit(status);
 118 }
 119
 120
 121 void showFileError(string const & error)
 122 {
 123         Alert::warning(_("Could not read configuration file"),
 124                        bformat(_("Error while reading the configuration file\n%1$s.\n"
 125                            "Please check your installation."), lyx::from_utf8(error)));
 126 }
 127
 128
 129 void reconfigureUserLyXDir()
 130 {
 131         string const configure_command = package().configure_command();
 132
 133         lyxerr << lyx::to_utf8(_("LyX: reconfiguring user directory")) << endl;
 134         lyx::support::Path p(package().user_support());
 135         Systemcall one;
 136         one.startscript(Systemcall::Wait, configure_command);
 137         lyxerr << "LyX: " << lyx::to_utf8(_("Done!")) << endl;
 138 }
 139
 140 } // namespace anon
 141
 142
 143 boost::scoped_ptr<LyX> LyX::singleton_;
 144
 145 int LyX::exec(int & argc, char * argv[])
 146 {
 147         BOOST_ASSERT(!singleton_.get());
 148         // We must return from this before launching the gui so that
 149         // other parts of the code can access singleton_ through
 150         // LyX::ref and LyX::cref.
 151         singleton_.reset(new LyX);
 152         // Start the real execution loop.
 153         return singleton_->priv_exec(argc, argv);
 154 }
 155
 156
 157 LyX & LyX::ref()
 158 {
 159         BOOST_ASSERT(singleton_.get());
 160         return *singleton_.get();
 161 }
 162
 163
 164 LyX const & LyX::cref()
 165 {
 166         BOOST_ASSERT(singleton_.get());
 167         return *singleton_.get();
 168 }
 169
 170
 171 LyX::LyX()
 172         : first_start(false), geometryOption_(false)
 173 {}
 174
 175
 176 lyx::Session & LyX::session()
 177 {
 178         BOOST_ASSERT(session_.get());
 179         return *session_.get();
 180 }
 181
 182
 183 lyx::Session const & LyX::session() const
 184 {
 185         BOOST_ASSERT(session_.get());
 186         return *session_.get();
 187 }
 188
 189
 190 void LyX::addLyXView(LyXView * lyxview)
 191 {
 192         views_.push_back(lyxview);
 193 }
 194
 195
 196 Buffer const * const LyX::updateInset(InsetBase const * inset) const
 197 {
 198         if (!inset)
 199                 return 0;
 200
 201         Buffer const * buffer_ptr = 0;
 202         ViewList::const_iterator it = views_.begin();
 203         ViewList::const_iterator const end = views_.end();
 204         for (; it != end; ++it) {
 205                 Buffer const * ptr = (*it)->updateInset(inset);
 206                 if (ptr)
 207                         buffer_ptr = ptr;
 208         }
 209         return buffer_ptr;
 210 }
 211
 212
 213 int LyX::priv_exec(int & argc, char * argv[])
 214 {
 215         // Here we need to parse the command line. At least
 216         // we need to parse for "-dbg" and "-help"
 217         lyx_gui::use_gui = easyParse(argc, argv);
 218
 219         lyx::support::init_package(argv[0], cl_system_support, cl_user_support,
 220                                    lyx::support::top_build_dir_is_one_level_up);
 221
 222         // Start the real execution loop.
 223         if (lyx_gui::use_gui) {
 224                 // Force adding of font path _before_ Application is initialized
 225                 lyx::support::addFontResources();
 226                 return lyx_gui::exec(argc, argv);
 227         }
 228         else
 229                 return exec2(argc, argv);
 230 }
 231
 232
 233 int LyX::exec2(int & argc, char * argv[])
 234 {
 235         // check for any spurious extra arguments
 236         // other than documents
 237         for (int argi = 1; argi < argc ; ++argi) {
 238                 if (argv[argi][0] == '-') {
 239                         lyxerr << lyx::to_utf8(
 240                                 bformat(_("Wrong command line option `%1$s'. Exiting."),
 241                                 lyx::from_utf8(argv[argi]))) << endl;
 242                         return EXIT_FAILURE;
 243                 }
 244         }
 245
 246         // Initialization of LyX (reads lyxrc and more)
 247         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 248         bool const success = init();
 249         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 250         if (!success)
 251                 return EXIT_FAILURE;
 252
 253         if (lyx_gui::use_gui)
 254                 lyx_gui::parse_lyxrc();
 255
 256         vector<string> files;
 257
 258         for (int argi = argc - 1; argi >= 1; --argi)
 259                 files.push_back(os::internal_path(argv[argi]));
 260
 261         if (first_start)
 262                 files.push_back(i18nLibFileSearch("examples", "splash.lyx"));
 263
 264         // Execute batch commands if available
 265         if (!batch_command.empty()) {
 266
 267                 lyxerr[Debug::INIT] << "About to handle -x '"
 268                        << batch_command << '\'' << endl;
 269
 270                 Buffer * last_loaded = 0;
 271
 272                 vector<string>::const_iterator it = files.begin();
 273                 vector<string>::const_iterator end = files.end();
 274
 275                 for (; it != end; ++it) {
 276                         // get absolute path of file and add ".lyx" to
 277                         // the filename if necessary
 278                         string s = fileSearch(string(), *it, "lyx");
 279                         if (s.empty()) {
 280                                 Buffer * const b = newFile(*it, string(), true);
 281                                 if (b)
 282                                         last_loaded = b;
 283                         } else {
 284                                 Buffer * buf = theApp->bufferList().newBuffer(s, false);
 285                                 if (loadLyXFile(buf, s)) {
 286                                         last_loaded = buf;
 287                                         ErrorList const & el = buf->errorList("Parse");
 288                                         if (!el.empty())
 289                                                 for_each(el.begin(), el.end(),
 290                                                         boost::bind(&LyX::printError, this, _1));
 291                                 }
 292                                 else
 293                                         theApp->bufferList().release(buf);
 294                         }
 295                 }
 296
 297                 // try to dispatch to last loaded buffer first
 298                 if (last_loaded) {
 299                         bool success = false;
 300                         if (last_loaded->dispatch(batch_command, &success)) {
 301                                 quitLyX(false);
 302                                 return !success;
 303                         }
 304                 }
 305                 files.clear(); // the files are already loaded
 306         }
 307
 308         if (lyx_gui::use_gui) {
 309                 // determine windows size and position, from lyxrc and/or session
 310                 // initial geometry
 311                 unsigned int width = 690;
 312                 unsigned int height = 510;
 313                 bool maximize = false;
 314                 // first try lyxrc
 315                 if (lyxrc.geometry_width != 0 && lyxrc.geometry_height != 0 ) {
 316                         width = lyxrc.geometry_width;
 317                         height = lyxrc.geometry_height;
 318                 }
 319                 // if lyxrc returns (0,0), then use session info
 320                 else {
 321                         string val = session().loadSessionInfo("WindowWidth");
 322                         if (!val.empty())
 323                                 width = convert<unsigned int>(val);
 324                         val = session().loadSessionInfo("WindowHeight");
 325                         if (!val.empty())
 326                                 height = convert<unsigned int>(val);
 327                         if (session().loadSessionInfo("WindowIsMaximized") == "yes")
 328                                 maximize = true;
 329                 }
 330                 // if user wants to restore window position
 331                 int posx = -1;
 332                 int posy = -1;
 333                 if (lyxrc.geometry_xysaved) {
 334                         string val = session().loadSessionInfo("WindowPosX");
 335                         if (!val.empty())
 336                                 posx = convert<int>(val);
 337                         val = session().loadSessionInfo("WindowPosY");
 338                         if (!val.empty())
 339                                 posy = convert<int>(val);
 340                 }
 341
 342                 if (geometryOption_) {
 343                         width = 0;
 344                         height = 0;
 345                 }
 346                 // create the main window
 347                 LyXView * view = &theApp->createView(width, height, posx, posy, maximize);
 348                 ref().addLyXView(view);
 349
 350                 // load files
 351                 for_each(files.begin(), files.end(),
 352                         bind(&LyXView::loadLyXFile, view, _1, true));
 353
 354                 // if a file is specified, I assume that user wants to edit *that* file
 355                 if (files.empty() && lyxrc.load_session) {
 356                         vector<string> const & lastopened = session_->lastOpenedFiles();
 357                         // do not add to the lastfile list since these files are restored from
 358                         // last seesion, and should be already there (regular files), or should
 359                         // not be added at all (help files).
 360                         for_each(lastopened.begin(), lastopened.end(),
 361                                 bind(&LyXView::loadLyXFile, view, _1, false));
 362                 }
 363                 // clear this list to save a few bytes of RAM
 364                 session_->clearLastOpenedFiles();
 365
 366                 return theApp->start(batch_command);
 367         } else {
 368                 // Something went wrong above
 369                 quitLyX(false);
 370                 return EXIT_FAILURE;
 371         }
 372 }
 373
 374
 375 /*
 376 Signals and Windows
 377 ===================
 378 The SIGHUP signal does not exist on Windows and does not need to be handled.
 379
 380 Windows handles SIGFPE and SIGSEGV signals as expected.
 381
 382 Cntl+C interrupts (mapped to SIGINT by Windows' POSIX compatability layer)
 383 cause a new thread to be spawned. This may well result in unexpected
 384 behaviour by the single-threaded LyX.
 385
 386 SIGTERM signals will come only from another process actually sending
 387 that signal using 'raise' in Windows' POSIX compatability layer. It will
 388 not come from the general "terminate process" methods that everyone
 389 actually uses (and which can't be trapped). Killing an app 'politely' on
 390 Windows involves first sending a WM_CLOSE message, something that is
 391 caught already by the Qt frontend.
 392
 393 For more information see:
 394
 395 http://aspn.activestate.com/ASPN/Mail/Message/ActiveTcl/2034055
 396 ...signals are mostly useless on Windows for a variety of reasons that are
 397 Windows specific...
 398
 399 'UNIX Application Migration Guide, Chapter 9'
 400 http://msdn.microsoft.com/library/en-us/dnucmg/html/UCMGch09.asp
 401
 402 'How To Terminate an Application "Cleanly" in Win32'
 403 http://support.microsoft.com/default.aspx?scid=kb;en-us;178893
 404 */
 405 extern "C" {
 406
 407 static void error_handler(int err_sig)
 408 {
 409         // Throw away any signals other than the first one received.
 410         static sig_atomic_t handling_error = false;
 411         if (handling_error)
 412                 return;
 413         handling_error = true;
 414
 415         // We have received a signal indicating a fatal error, so
 416         // try and save the data ASAP.
 417         LyX::cref().emergencyCleanup();
 418
 419         // These lyxerr calls may or may not work:
 420
 421         // Signals are asynchronous, so the main program may be in a very
 422         // fragile state when a signal is processed and thus while a signal
 423         // handler function executes.
 424         // In general, therefore, we should avoid performing any
 425         // I/O operations or calling most library and system functions from
 426         // signal handlers.
 427
 428         // This shouldn't matter here, however, as we've already invoked
 429         // emergencyCleanup.
 430         switch (err_sig) {
 431 #ifdef SIGHUP
 432         case SIGHUP:
 433                 lyxerr << "\nlyx: SIGHUP signal caught\nBye." << endl;
 434                 break;
 435 #endif
 436         case SIGFPE:
 437                 lyxerr << "\nlyx: SIGFPE signal caught\nBye." << endl;
 438                 break;
 439         case SIGSEGV:
 440                 lyxerr << "\nlyx: SIGSEGV signal caught\n"
 441                           "Sorry, you have found a bug in LyX. "
 442                           "Please read the bug-reporting instructions "
 443                           "in Help->Introduction and send us a bug report, "
 444                           "if necessary. Thanks !\nBye." << endl;
 445                 break;
 446         case SIGINT:
 447         case SIGTERM:
 448                 // no comments
 449                 break;
 450         }
 451
 452         // Deinstall the signal handlers
 453 #ifdef SIGHUP
 454         signal(SIGHUP, SIG_DFL);
 455 #endif
 456         signal(SIGINT, SIG_DFL);
 457         signal(SIGFPE, SIG_DFL);
 458         signal(SIGSEGV, SIG_DFL);
 459         signal(SIGTERM, SIG_DFL);
 460
 461 #ifdef SIGHUP
 462         if (err_sig == SIGSEGV ||
 463             (err_sig != SIGHUP && !getEnv("LYXDEBUG").empty()))
 464 #else
 465         if (err_sig == SIGSEGV || !getEnv("LYXDEBUG").empty())
 466 #endif
 467                 lyx::support::abort();
 468         exit(0);
 469 }
 470
 471 }
 472
 473
 474 void LyX::printError(ErrorItem const & ei)
 475 {
 476         docstring tmp = _("LyX: ") + ei.error + lyx::char_type(':')
 477                 + ei.description;
 478         std::cerr << lyx::to_utf8(tmp) << std::endl;
 479 }
 480
 481
 482 bool LyX::init()
 483 {
 484 #ifdef SIGHUP
 485         signal(SIGHUP, error_handler);
 486 #endif
 487         signal(SIGFPE, error_handler);
 488         signal(SIGSEGV, error_handler);
 489         signal(SIGINT, error_handler);
 490         signal(SIGTERM, error_handler);
 491         // SIGPIPE can be safely ignored.
 492
 493         lyxrc.tempdir_path = package().temp_dir();
 494         lyxrc.document_path = package().document_dir();
 495
 496         if (lyxrc.template_path.empty()) {
 497                 lyxrc.template_path = addPath(package().system_support(),
 498                                               "templates");
 499         }
 500
 501         if (lyxrc.roman_font_name.empty())
 502                 lyxrc.roman_font_name = lyx_gui::roman_font_name();
 503         if (lyxrc.sans_font_name.empty())
 504                 lyxrc.sans_font_name = lyx_gui::sans_font_name();
 505         if (lyxrc.typewriter_font_name.empty())
 506                 lyxrc.typewriter_font_name = lyx_gui::typewriter_font_name();
 507
 508         //
 509         // Read configuration files
 510         //
 511
 512         // This one may have been distributed along with LyX.
 513         if (!readRcFile("lyxrc.dist"))
 514                 return false;
 515
 516         // Set the PATH correctly.
 517 #if !defined (USE_POSIX_PACKAGING)
 518         // Add the directory containing the LyX executable to the path
 519         // so that LyX can find things like tex2lyx.
 520         if (package().build_support().empty())
 521                 prependEnvPath("PATH", package().binary_dir());
 522 #endif
 523         if (!lyxrc.path_prefix.empty())
 524                 prependEnvPath("PATH", lyxrc.path_prefix);
 525
 526         // Check that user LyX directory is ok.
 527         if (queryUserLyXDir(package().explicit_user_support()))
 528                 reconfigureUserLyXDir();
 529
 530         // no need for a splash when there is no GUI
 531         if (!lyx_gui::use_gui) {
 532                 first_start = false;
 533         }
 534
 535         // This one is generated in user_support directory by lib/configure.py.
 536         if (!readRcFile("lyxrc.defaults"))
 537                 return false;
 538
 539         // Query the OS to know what formats are viewed natively
 540         formats.setAutoOpen();
 541
 542         system_lyxrc = lyxrc;
 543         system_formats = formats;
 544         system_converters = converters;
 545         system_movers = movers;
 546         system_lcolor = lcolor;
 547
 548         // This one is edited through the preferences dialog.
 549         if (!readRcFile("preferences"))
 550                 return false;
 551
 552         if (!readEncodingsFile("encodings"))
 553                 return false;
 554         if (!readLanguagesFile("languages"))
 555                 return false;
 556
 557         // Load the layouts
 558         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 559         if (!LyXSetStyle())
 560                 return false;
 561
 562         if (lyx_gui::use_gui) {
 563                 // Set up bindings
 564                 toplevel_keymap.reset(new kb_keymap);
 565                 defaultKeyBindings(toplevel_keymap.get());
 566                 toplevel_keymap->read(lyxrc.bind_file);
 567
 568                 // Read menus
 569                 if (!readUIFile(lyxrc.ui_file))
 570                         return false;
 571         }
 572
 573         if (lyxerr.debugging(Debug::LYXRC))
 574                 lyxrc.print();
 575
 576         os::windows_style_tex_paths(lyxrc.windows_style_tex_paths);
 577         if (!lyxrc.path_prefix.empty())
 578                 prependEnvPath("PATH", lyxrc.path_prefix);
 579
 580         if (fs::exists(lyxrc.document_path) &&
 581             fs::is_directory(lyxrc.document_path))
 582                 package().document_dir() = lyxrc.document_path;
 583
 584         package().temp_dir() = createLyXTmpDir(lyxrc.tempdir_path);
 585         if (package().temp_dir().empty()) {
 586                 Alert::error(_("Could not create temporary directory"),
 587                              bformat(_("Could not create a temporary directory in\n"
 588                                                     "%1$s. Make sure that this\n"
 589                                                     "path exists and is writable and try again."),
 590                                      lyx::from_utf8(lyxrc.tempdir_path)));
 591                 // createLyXTmpDir() tries sufficiently hard to create a
 592                 // usable temp dir, so the probability to come here is
 593                 // close to zero. We therefore don't try to overcome this
 594                 // problem with e.g. asking the user for a new path and
 595                 // trying again but simply exit.
 596                 return false;
 597         }
 598
 599         if (lyxerr.debugging(Debug::INIT)) {
 600                 lyxerr << "LyX tmp dir: `" << package().temp_dir() << '\'' << endl;
 601         }
 602
 603         lyxerr[Debug::INIT] << "Reading session information '.lyx/session'..." << endl;
 604         session_.reset(new lyx::Session(lyxrc.num_lastfiles));
 605         return true;
 606 }
 607
 608
 609 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 610 {
 611         kbmap->bind("Right", FuncRequest(LFUN_CHAR_FORWARD));
 612         kbmap->bind("Left", FuncRequest(LFUN_CHAR_BACKWARD));
 613         kbmap->bind("Up", FuncRequest(LFUN_UP));
 614         kbmap->bind("Down", FuncRequest(LFUN_DOWN));
 615
 616         kbmap->bind("Tab", FuncRequest(LFUN_CELL_FORWARD));
 617         kbmap->bind("C-Tab", FuncRequest(LFUN_CELL_SPLIT));
 618         kbmap->bind("~S-ISO_Left_Tab", FuncRequest(LFUN_CELL_BACKWARD));
 619         kbmap->bind("~S-BackTab", FuncRequest(LFUN_CELL_BACKWARD));
 620
 621         kbmap->bind("Home", FuncRequest(LFUN_LINE_BEGIN));
 622         kbmap->bind("End", FuncRequest(LFUN_LINE_END));
 623         kbmap->bind("Prior", FuncRequest(LFUN_SCREEN_UP));
 624         kbmap->bind("Next", FuncRequest(LFUN_SCREEN_DOWN));
 625
 626         kbmap->bind("Return", FuncRequest(LFUN_BREAK_PARAGRAPH));
 627         //kbmap->bind("~C-~S-~M-nobreakspace", FuncRequest(LFUN_PROTECTEDSPACE));
 628
 629         kbmap->bind("Delete", FuncRequest(LFUN_CHAR_DELETE_FORWARD));
 630         kbmap->bind("BackSpace", FuncRequest(LFUN_CHAR_DELETE_BACKWARD));
 631
 632         // kbmap->bindings to enable the use of the numeric keypad
 633         // e.g. Num Lock set
 634         //kbmap->bind("KP_0", FuncRequest(LFUN_SELF_INSERT));
 635         //kbmap->bind("KP_Decimal", FuncRequest(LFUN_SELF_INSERT));
 636         kbmap->bind("KP_Enter", FuncRequest(LFUN_BREAK_PARAGRAPH));
 637         //kbmap->bind("KP_1", FuncRequest(LFUN_SELF_INSERT));
 638         //kbmap->bind("KP_2", FuncRequest(LFUN_SELF_INSERT));
 639         //kbmap->bind("KP_3", FuncRequest(LFUN_SELF_INSERT));
 640         //kbmap->bind("KP_4", FuncRequest(LFUN_SELF_INSERT));
 641         //kbmap->bind("KP_5", FuncRequest(LFUN_SELF_INSERT));
 642         //kbmap->bind("KP_6", FuncRequest(LFUN_SELF_INSERT));
 643         //kbmap->bind("KP_Add", FuncRequest(LFUN_SELF_INSERT));
 644         //kbmap->bind("KP_7", FuncRequest(LFUN_SELF_INSERT));
 645         //kbmap->bind("KP_8", FuncRequest(LFUN_SELF_INSERT));
 646         //kbmap->bind("KP_9", FuncRequest(LFUN_SELF_INSERT));
 647         //kbmap->bind("KP_Divide", FuncRequest(LFUN_SELF_INSERT));
 648         //kbmap->bind("KP_Multiply", FuncRequest(LFUN_SELF_INSERT));
 649         //kbmap->bind("KP_Subtract", FuncRequest(LFUN_SELF_INSERT));
 650         kbmap->bind("KP_Right", FuncRequest(LFUN_CHAR_FORWARD));
 651         kbmap->bind("KP_Left", FuncRequest(LFUN_CHAR_BACKWARD));
 652         kbmap->bind("KP_Up", FuncRequest(LFUN_UP));
 653         kbmap->bind("KP_Down", FuncRequest(LFUN_DOWN));
 654         kbmap->bind("KP_Home", FuncRequest(LFUN_LINE_BEGIN));
 655         kbmap->bind("KP_End", FuncRequest(LFUN_LINE_END));
 656         kbmap->bind("KP_Prior", FuncRequest(LFUN_SCREEN_UP));
 657         kbmap->bind("KP_Next", FuncRequest(LFUN_SCREEN_DOWN));
 658 }
 659
 660
 661 void LyX::emergencyCleanup() const
 662 {
 663         // what to do about tmpfiles is non-obvious. we would
 664         // like to delete any we find, but our lyxdir might
 665         // contain documents etc. which might be helpful on
 666         // a crash
 667
 668         theApp->bufferList().emergencyWriteAll();
 669         theApp->server().emergencyCleanup();
 670 }
 671
 672
 673 void LyX::deadKeyBindings(kb_keymap * kbmap)
 674 {
 675         // bindKeyings for transparent handling of deadkeys
 676         // The keysyms are gotten from XFree86 X11R6
 677         kbmap->bind("~C-~S-~M-dead_acute", FuncRequest(LFUN_ACCENT_ACUTE));
 678         kbmap->bind("~C-~S-~M-dead_breve", FuncRequest(LFUN_ACCENT_BREVE));
 679         kbmap->bind("~C-~S-~M-dead_caron", FuncRequest(LFUN_ACCENT_CARON));
 680         kbmap->bind("~C-~S-~M-dead_cedilla", FuncRequest(LFUN_ACCENT_CEDILLA));
 681         kbmap->bind("~C-~S-~M-dead_abovering", FuncRequest(LFUN_ACCENT_CIRCLE));
 682         kbmap->bind("~C-~S-~M-dead_circumflex", FuncRequest(LFUN_ACCENT_CIRCUMFLEX));
 683         kbmap->bind("~C-~S-~M-dead_abovedot", FuncRequest(LFUN_ACCENT_DOT));
 684         kbmap->bind("~C-~S-~M-dead_grave", FuncRequest(LFUN_ACCENT_GRAVE));
 685         kbmap->bind("~C-~S-~M-dead_doubleacute", FuncRequest(LFUN_ACCENT_HUNGARIAN_UMLAUT));
 686         kbmap->bind("~C-~S-~M-dead_macron", FuncRequest(LFUN_ACCENT_MACRON));
 687         // nothing with this name
 688         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_ACCENT_SPECIAL_CARON);
 689         kbmap->bind("~C-~S-~M-dead_tilde", FuncRequest(LFUN_ACCENT_TILDE));
 690         kbmap->bind("~C-~S-~M-dead_diaeresis", FuncRequest(LFUN_ACCENT_UMLAUT));
 691         // nothing with this name either...
 692         //kbmap->bind("~C-~S-~M-dead_underbar", FuncRequest(LFUN_ACCENT_UNDERBAR));
 693         kbmap->bind("~C-~S-~M-dead_belowdot", FuncRequest(LFUN_ACCENT_UNDERDOT));
 694         kbmap->bind("~C-~S-~M-dead_tie", FuncRequest(LFUN_ACCENT_TIE));
 695         kbmap->bind("~C-~S-~M-dead_ogonek",FuncRequest(LFUN_ACCENT_OGONEK));
 696 }
 697
 698
 699 namespace {
 700
 701 // return true if file does not exist or is older than configure.py.
 702 bool needsUpdate(string const & file)
 703 {
 704         static string const configure_script =
 705                 addName(package().system_support(), "configure.py");
 706         string const absfile =
 707                 addName(package().user_support(), file);
 708
 709         return (! fs::exists(absfile))
 710                 || (fs::last_write_time(configure_script)
 711                     > fs::last_write_time(absfile));
 712 }
 713
 714 }
 715
 716
 717 bool LyX::queryUserLyXDir(bool explicit_userdir)
 718 {
 719         // Does user directory exist?
 720         if (fs::exists(package().user_support()) &&
 721             fs::is_directory(package().user_support())) {
 722                 first_start = false;
 723
 724                 return needsUpdate("lyxrc.defaults")
 725                         || needsUpdate("textclass.lst")
 726                         || needsUpdate("packages.lst");
 727         }
 728
 729         first_start = !explicit_userdir;
 730
 731         // If the user specified explicitly a directory, ask whether
 732         // to create it. If the user says "no", then exit.
 733         if (explicit_userdir &&
 734             Alert::prompt(
 735                     _("Missing user LyX directory"),
 736                     bformat(_("You have specified a non-existent user "
 737                                            "LyX directory, %1$s.\n"
 738                                            "It is needed to keep your own configuration."),
 739                             lyx::from_utf8(package().user_support())),
 740                     1, 0,
 741                     _("&Create directory"),
 742                     _("&Exit LyX"))) {
 743                 lyxerr << lyx::to_utf8(_("No user LyX directory. Exiting.")) << endl;
 744                 lyx_exit(EXIT_FAILURE);
 745         }
 746
 747         lyxerr << lyx::to_utf8(bformat(_("LyX: Creating directory %1$s"),
 748                           lyx::from_utf8(package().user_support())))
 749                << endl;
 750
 751         if (!createDirectory(package().user_support(), 0755)) {
 752                 // Failed, so let's exit.
 753                 lyxerr << lyx::to_utf8(_("Failed to create directory. Exiting."))
 754                        << endl;
 755                 lyx_exit(EXIT_FAILURE);
 756         }
 757
 758         return true;
 759 }
 760
 761
 762 bool LyX::readRcFile(string const & name)
 763 {
 764         lyxerr[Debug::INIT] << "About to read " << name << "... ";
 765
 766         string const lyxrc_path = libFileSearch(string(), name);
 767         if (!lyxrc_path.empty()) {
 768
 769                 lyxerr[Debug::INIT] << "Found in " << lyxrc_path << endl;
 770
 771                 if (lyxrc.read(lyxrc_path) < 0) {
 772                         showFileError(name);
 773                         return false;
 774                 }
 775         } else
 776                 lyxerr[Debug::INIT] << "Not found." << lyxrc_path << endl;
 777         return true;
 778
 779 }
 780
 781
 782 // Read the ui file `name'
 783 bool LyX::readUIFile(string const & name)
 784 {
 785         enum Uitags {
 786                 ui_menuset = 1,
 787                 ui_toolbar,
 788                 ui_toolbars,
 789                 ui_include,
 790                 ui_last
 791         };
 792
 793         struct keyword_item uitags[ui_last - 1] = {
 794                 { "include", ui_include },
 795                 { "menuset", ui_menuset },
 796                 { "toolbar", ui_toolbar },
 797                 { "toolbars", ui_toolbars }
 798         };
 799
 800         // Ensure that a file is read only once (prevents include loops)
 801         static std::list<string> uifiles;
 802         std::list<string>::const_iterator it  = uifiles.begin();
 803         std::list<string>::const_iterator end = uifiles.end();
 804         it = std::find(it, end, name);
 805         if (it != end) {
 806                 lyxerr[Debug::INIT] << "UI file '" << name
 807                                     << "' has been read already. "
 808                                     << "Is this an include loop?"
 809                                     << endl;
 810                 return false;
 811         }
 812
 813         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 814
 815         string const ui_path = libFileSearch("ui", name, "ui");
 816
 817         if (ui_path.empty()) {
 818                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 819                 showFileError(name);
 820                 return false;
 821         }
 822         uifiles.push_back(name);
 823
 824         lyxerr[Debug::INIT] << "Found " << name
 825                             << " in " << ui_path << endl;
 826         LyXLex lex(uitags, ui_last - 1);
 827         lex.setFile(ui_path);
 828         if (!lex.isOK()) {
 829                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 830                        << endl;
 831         }
 832
 833         if (lyxerr.debugging(Debug::PARSER))
 834                 lex.printTable(lyxerr);
 835
 836         while (lex.isOK()) {
 837                 switch (lex.lex()) {
 838                 case ui_include: {
 839                         lex.next(true);
 840                         string const file = lex.getString();
 841                         if (!readUIFile(file))
 842                                 return false;
 843                         break;
 844                 }
 845                 case ui_menuset:
 846                         menubackend.read(lex);
 847                         break;
 848
 849                 case ui_toolbar:
 850                         toolbarbackend.read(lex);
 851                         break;
 852
 853                 case ui_toolbars:
 854                         toolbarbackend.readToolbars(lex);
 855                         break;
 856
 857                 default:
 858                         if (!rtrim(lex.getString()).empty())
 859                                 lex.printError("LyX::ReadUIFile: "
 860                                                "Unknown menu tag: `$$Token'");
 861                         break;
 862                 }
 863         }
 864         return true;
 865 }
 866
 867
 868 // Read the languages file `name'
 869 bool LyX::readLanguagesFile(string const & name)
 870 {
 871         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 872
 873         string const lang_path = libFileSearch(string(), name);
 874         if (lang_path.empty()) {
 875                 showFileError(name);
 876                 return false;
 877         }
 878         languages.read(lang_path);
 879         return true;
 880 }
 881
 882
 883 // Read the encodings file `name'
 884 bool LyX::readEncodingsFile(string const & name)
 885 {
 886         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 887
 888         string const enc_path = libFileSearch(string(), name);
 889         if (enc_path.empty()) {
 890                 showFileError(name);
 891                 return false;
 892         }
 893         encodings.read(enc_path);
 894         return true;
 895 }
 896
 897
 898 namespace {
 899
 900 bool is_gui = true;
 901 string batch;
 902
 903 /// return the the number of arguments consumed
 904 typedef boost::function<int(string const &, string const &)> cmd_helper;
 905
 906 int parse_dbg(string const & arg, string const &)
 907 {
 908         if (arg.empty()) {
 909                 lyxerr << lyx::to_utf8(_("List of supported debug flags:")) << endl;
 910                 Debug::showTags(lyxerr);
 911                 exit(0);
 912         }
 913         lyxerr << lyx::to_utf8(bformat(_("Setting debug level to %1$s"), lyx::from_utf8(arg))) << endl;
 914
 915         lyxerr.level(Debug::value(arg));
 916         Debug::showLevel(lyxerr, lyxerr.level());
 917         return 1;
 918 }
 919
 920
 921 int parse_help(string const &, string const &)
 922 {
 923         lyxerr <<
 924                 lyx::to_utf8(_("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 925                   "Command line switches (case sensitive):\n"
 926                   "\t-help              summarize LyX usage\n"
 927                   "\t-userdir dir       set user directory to dir\n"
 928                   "\t-sysdir dir        set system directory to dir\n"
 929                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 930                   "\t-dbg feature[,feature]...\n"
 931                   "                  select the features to debug.\n"
 932                   "                  Type `lyx -dbg' to see the list of features\n"
 933                   "\t-x [--execute] command\n"
 934                   "                  where command is a lyx command.\n"
 935                   "\t-e [--export] fmt\n"
 936                   "                  where fmt is the export format of choice.\n"
 937                   "\t-i [--import] fmt file.xxx\n"
 938                   "                  where fmt is the import format of choice\n"
 939                   "                  and file.xxx is the file to be imported.\n"
 940                   "\t-version        summarize version and build info\n"
 941                                "Check the LyX man page for more details.")) << endl;
 942         exit(0);
 943         return 0;
 944 }
 945
 946 int parse_version(string const &, string const &)
 947 {
 948         lyxerr << "LyX " << lyx_version
 949                << " (" << lyx_release_date << ")" << endl;
 950         lyxerr << "Built on " << __DATE__ << ", " << __TIME__ << endl;
 951
 952         lyxerr << lyx_version_info << endl;
 953         exit(0);
 954         return 0;
 955 }
 956
 957 int parse_sysdir(string const & arg, string const &)
 958 {
 959         if (arg.empty()) {
 960                 lyxerr << lyx::to_utf8(_("Missing directory for -sysdir switch")) << endl;
 961                 exit(1);
 962         }
 963         cl_system_support = arg;
 964         return 1;
 965 }
 966
 967 int parse_userdir(string const & arg, string const &)
 968 {
 969         if (arg.empty()) {
 970                 lyxerr << lyx::to_utf8(_("Missing directory for -userdir switch")) << endl;
 971                 exit(1);
 972         }
 973         cl_user_support = arg;
 974         return 1;
 975 }
 976
 977 int parse_execute(string const & arg, string const &)
 978 {
 979         if (arg.empty()) {
 980                 lyxerr << lyx::to_utf8(_("Missing command string after --execute switch")) << endl;
 981                 exit(1);
 982         }
 983         batch = arg;
 984         return 1;
 985 }
 986
 987 int parse_export(string const & type, string const &)
 988 {
 989         if (type.empty()) {
 990                 lyxerr << lyx::to_utf8(_("Missing file type [eg latex, ps...] after "
 991                                          "--export switch")) << endl;
 992                 exit(1);
 993         }
 994         batch = "buffer-export " + type;
 995         is_gui = false;
 996         return 1;
 997 }
 998
 999 int parse_import(string const & type, string const & file)
1000 {
1001         if (type.empty()) {
1002                 lyxerr << lyx::to_utf8(_("Missing file type [eg latex, ps...] after "
1003                                          "--import switch")) << endl;
1004                 exit(1);
1005         }
1006         if (file.empty()) {
1007                 lyxerr << lyx::to_utf8(_("Missing filename for --import")) << endl;
1008                 exit(1);
1009         }
1010
1011         batch = "buffer-import " + type + ' ' + file;
1012         return 2;
1013 }
1014
1015 } // namespace anon
1016
1017
1018 bool LyX::easyParse(int & argc, char * argv[])
1019 {
1020         std::map<string, cmd_helper> cmdmap;
1021
1022         cmdmap["-dbg"] = parse_dbg;
1023         cmdmap["-help"] = parse_help;
1024         cmdmap["--help"] = parse_help;
1025         cmdmap["-version"] = parse_version;
1026         cmdmap["--version"] = parse_version;
1027         cmdmap["-sysdir"] = parse_sysdir;
1028         cmdmap["-userdir"] = parse_userdir;
1029         cmdmap["-x"] = parse_execute;
1030         cmdmap["--execute"] = parse_execute;
1031         cmdmap["-e"] = parse_export;
1032         cmdmap["--export"] = parse_export;
1033         cmdmap["-i"] = parse_import;
1034         cmdmap["--import"] = parse_import;
1035
1036         for (int i = 1; i < argc; ++i) {
1037                 std::map<string, cmd_helper>::const_iterator it
1038                         = cmdmap.find(argv[i]);
1039
1040                 // check for X11 -geometry option
1041                 if (lyx::support::compare(argv[i], "-geometry") == 0)
1042                         geometryOption_ = true;
1043
1044                 // don't complain if not found - may be parsed later
1045                 if (it == cmdmap.end())
1046                         continue;
1047
1048                 string arg((i + 1 < argc) ? argv[i + 1] : "");
1049                 string arg2((i + 2 < argc) ? argv[i + 2] : "");
1050
1051                 int const remove = 1 + it->second(arg, arg2);
1052
1053                 // Now, remove used arguments by shifting
1054                 // the following ones remove places down.
1055                 argc -= remove;
1056                 for (int j = i; j < argc; ++j)
1057                         argv[j] = argv[j + remove];
1058                 --i;
1059         }
1060
1061         batch_command = batch;
1062
1063         return is_gui;
1064 }