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 "lyxtextclasslist.h"
  38 #include "lyxserver.h"
  39 #include "MenuBackend.h"
  40 #include "mover.h"
  41 #include "ToolbarBackend.h"
  42
  43 #include "mathed/math_inset.h"
  44
  45 #include "frontends/Alert.h"
  46 #include "frontends/lyx_gui.h"
  47 #include "frontends/LyXView.h"
  48
  49 #include "support/environment.h"
  50 #include "support/filetools.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::Path;
  75 using lyx::support::prependEnvPath;
  76 using lyx::support::quoteName;
  77 using lyx::support::rtrim;
  78 using lyx::support::Systemcall;
  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::mem_fun_ref;
  87
  88 #ifndef CXX_GLOBAL_CSTD
  89 using std::exit;
  90 using std::signal;
  91 using std::system;
  92 #endif
  93
  94
  95 extern LyXServer * lyxserver;
  96
  97 // This is the global bufferlist object
  98 BufferList bufferlist;
  99
 100 // convenient to have it here.
 101 boost::scoped_ptr<kb_keymap> toplevel_keymap;
 102
 103 namespace {
 104
 105 // Filled with the command line arguments "foo" of "-sysdir foo" or
 106 // "-userdir foo".
 107 string cl_system_support;
 108 string cl_user_support;
 109
 110
 111 void lyx_exit(int status)
 112 {
 113         // FIXME: We should not directly call exit(), since it only
 114         // guarantees a return to the system, no application cleanup.
 115         // This may cause troubles with not executed destructors.
 116         if (lyx_gui::use_gui)
 117                 // lyx_gui::exit may return and only schedule the exit
 118                 lyx_gui::exit(status);
 119         exit(status);
 120 }
 121
 122
 123 void showFileError(string const & error)
 124 {
 125         Alert::warning(_("Could not read configuration file"),
 126                    bformat(_("Error while reading the configuration file\n%1$s.\n"
 127                      "Please check your installation."), error));
 128 }
 129
 130
 131 void reconfigureUserLyXDir()
 132 {
 133         string const configure_command = package().configure_command();
 134
 135         lyxerr << _("LyX: reconfiguring user directory") << endl;
 136         Path p(package().user_support());
 137         Systemcall one;
 138         one.startscript(Systemcall::Wait, configure_command);
 139         lyxerr << "LyX: " << _("Done!") << endl;
 140 }
 141
 142 } // namespace anon
 143
 144
 145 boost::scoped_ptr<LyX> LyX::singleton_;
 146
 147 int LyX::exec(int & argc, char * argv[])
 148 {
 149         BOOST_ASSERT(!singleton_.get());
 150         // We must return from this before launching the gui so that
 151         // other parts of the code can access singleton_ through
 152         // LyX::ref and LyX::cref.
 153         singleton_.reset(new LyX);
 154         // Start the real execution loop.
 155         return singleton_->priv_exec(argc, argv);
 156 }
 157
 158
 159 LyX & LyX::ref()
 160 {
 161         BOOST_ASSERT(singleton_.get());
 162         return *singleton_.get();
 163 }
 164
 165
 166 LyX const & LyX::cref()
 167 {
 168         BOOST_ASSERT(singleton_.get());
 169         return *singleton_.get();
 170 }
 171
 172
 173 LyX::LyX()
 174         : first_start(false), geometryOption_(false)
 175 {}
 176
 177
 178 lyx::Session & LyX::session()
 179 {
 180         BOOST_ASSERT(session_.get());
 181         return *session_.get();
 182 }
 183
 184
 185 lyx::Session const & LyX::session() const
 186 {
 187         BOOST_ASSERT(session_.get());
 188         return *session_.get();
 189 }
 190
 191
 192 void LyX::addLyXView(LyXView * lyxview)
 193 {
 194         views_.push_back(lyxview);
 195 }
 196
 197
 198 Buffer const * const LyX::updateInset(InsetBase const * inset) const
 199 {
 200         if (!inset)
 201                 return 0;
 202
 203         Buffer const * buffer_ptr = 0;
 204         ViewList::const_iterator it = views_.begin();
 205         ViewList::const_iterator const end = views_.end();
 206         for (; it != end; ++it) {
 207                 Buffer const * ptr = (*it)->updateInset(inset);
 208                 if (ptr)
 209                         buffer_ptr = ptr;
 210         }
 211         return buffer_ptr;
 212 }
 213
 214
 215 int LyX::priv_exec(int & argc, char * argv[])
 216 {
 217         // Here we need to parse the command line. At least
 218         // we need to parse for "-dbg" and "-help"
 219         lyx_gui::use_gui = easyParse(argc, argv);
 220
 221         lyx::support::init_package(argv[0], cl_system_support, cl_user_support,
 222                                    lyx::support::top_build_dir_is_one_level_up);
 223
 224         // Start the real execution loop.
 225         if (lyx_gui::use_gui)
 226                 return lyx_gui::exec(argc, argv);
 227         else
 228                 return exec2(argc, argv);
 229 }
 230
 231
 232 int LyX::exec2(int & argc, char * argv[])
 233 {
 234         // check for any spurious extra arguments
 235         // other than documents
 236         for (int argi = 1; argi < argc ; ++argi) {
 237                 if (argv[argi][0] == '-') {
 238                         lyxerr << bformat(_("Wrong command line option `%1$s'. Exiting."),
 239                                 argv[argi]) << endl;
 240                         return EXIT_FAILURE;
 241                 }
 242         }
 243
 244         // Initialization of LyX (reads lyxrc and more)
 245         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 246         bool const success = init();
 247         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 248         if (!success)
 249                 return EXIT_FAILURE;
 250
 251         if (lyx_gui::use_gui)
 252                 lyx_gui::parse_lyxrc();
 253
 254         vector<string> files;
 255
 256         for (int argi = argc - 1; argi >= 1; --argi)
 257                 files.push_back(os::internal_path(argv[argi]));
 258
 259         if (first_start)
 260                 files.push_back(i18nLibFileSearch("examples", "splash.lyx"));
 261
 262         // if a file is specified, I assume that user wants to edit *that* file
 263         if (files.empty() && lyxrc.load_session) {
 264                 vector<string> const & lastopened = session_->lastOpenedFiles();
 265                 files.insert(files.end(), lastopened.begin(), lastopened.end()  );
 266         }
 267         // clear this list to save a few bytes of RAM
 268         session_->clearLastOpenedFiles();
 269
 270         // Execute batch commands if available
 271         if (!batch_command.empty()) {
 272
 273                 lyxerr[Debug::INIT] << "About to handle -x '"
 274                        << batch_command << '\'' << endl;
 275
 276                 Buffer * last_loaded = 0;
 277
 278                 vector<string>::const_iterator it = files.begin();
 279                 vector<string>::const_iterator end = files.end();
 280
 281                 for (; it != end; ++it) {
 282                         // get absolute path of file and add ".lyx" to
 283                         // the filename if necessary
 284                         string s = fileSearch(string(), *it, "lyx");
 285                         if (s.empty()) {
 286                                 last_loaded = newFile(*it, string(), true);
 287                         } else {
 288                                 Buffer * buf = bufferlist.newBuffer(s, false);
 289                                 if (loadLyXFile(buf, s))
 290                                         last_loaded = buf;
 291                                 else
 292                                         bufferlist.release(buf);
 293
 294                                 ErrorList const & el = buf->getErrorList();
 295                                 if (!el.empty()) {
 296                                         // There should be a way to use the following but I (abdel) don't know
 297                                         // how to make it compile on MSVC2005.
 298                                         //for_each(el.begin(), el.end(), mem_fun_ref(&LyX::printError));
 299                                         for (ErrorList::const_iterator it = el.begin();
 300                                                 it != el.end(); ++it) {
 301                                                         printError(*it);
 302                                         }
 303                                 }
 304                         }
 305                 }
 306
 307                 // try to dispatch to last loaded buffer first
 308                 if (last_loaded) {
 309                         bool success = false;
 310                         if (last_loaded->dispatch(batch_command, &success)) {
 311                                 quitLyX(false);
 312                                 return !success;
 313                         }
 314                 }
 315                 files.clear(); // the files are already loaded
 316         }
 317
 318         if (lyx_gui::use_gui) {
 319                 // determine windows size and position, from lyxrc and/or session
 320                 // initial geometry
 321                 unsigned int width = 690;
 322                 unsigned int height = 510;
 323                 bool maximize = false;
 324                 // first try lyxrc
 325                 if (lyxrc.geometry_width != 0 && lyxrc.geometry_height != 0 ) {
 326                         width = lyxrc.geometry_width;
 327                         height = lyxrc.geometry_height;
 328                 }
 329                 // if lyxrc returns (0,0), then use session info
 330                 else {
 331                         string val = session().loadSessionInfo("WindowWidth");
 332                         if (!val.empty())
 333                                 width = convert<unsigned int>(val);
 334                         val = session().loadSessionInfo("WindowHeight");
 335                         if (!val.empty())
 336                                 height = convert<unsigned int>(val);
 337                         if (session().loadSessionInfo("WindowIsMaximized") == "yes")
 338                                 maximize = true;
 339                 }
 340                 // if user wants to restore window position
 341                 int posx = -1;
 342                 int posy = -1;
 343                 if (lyxrc.geometry_xysaved) {
 344                         string val = session().loadSessionInfo("WindowPosX");
 345                         if (!val.empty())
 346                                 posx = convert<int>(val);
 347                         val = session().loadSessionInfo("WindowPosY");
 348                         if (!val.empty())
 349                                 posy = convert<int>(val);
 350                 }
 351
 352                 if (geometryOption_) {
 353                         width = 0;
 354                         height = 0;
 355                 }
 356
 357                 return lyx_gui::start(batch_command, files, width, height, posx, posy, maximize);
 358
 359         } else {
 360                 // Something went wrong above
 361                 quitLyX(false);
 362                 return EXIT_FAILURE;
 363         }
 364 }
 365
 366
 367 /*
 368 Signals and Windows
 369 ===================
 370 The SIGHUP signal does not exist on Windows and does not need to be handled.
 371
 372 Windows handles SIGFPE and SIGSEGV signals as expected.
 373
 374 Cntl+C interrupts (mapped to SIGINT by Windows' POSIX compatability layer)
 375 cause a new thread to be spawned. This may well result in unexpected
 376 behaviour by the single-threaded LyX.
 377
 378 SIGTERM signals will come only from another process actually sending
 379 that signal using 'raise' in Windows' POSIX compatability layer. It will
 380 not come from the general "terminate process" methods that everyone
 381 actually uses (and which can't be trapped). Killing an app 'politely' on
 382 Windows involves first sending a WM_CLOSE message, something that is
 383 caught already by the Qt frontend.
 384
 385 For more information see:
 386
 387 http://aspn.activestate.com/ASPN/Mail/Message/ActiveTcl/2034055
 388 ...signals are mostly useless on Windows for a variety of reasons that are
 389 Windows specific...
 390
 391 'UNIX Application Migration Guide, Chapter 9'
 392 http://msdn.microsoft.com/library/en-us/dnucmg/html/UCMGch09.asp
 393
 394 'How To Terminate an Application "Cleanly" in Win32'
 395 http://support.microsoft.com/default.aspx?scid=kb;en-us;178893
 396 */
 397 extern "C" {
 398
 399 static void error_handler(int err_sig)
 400 {
 401         // Throw away any signals other than the first one received.
 402         static sig_atomic_t handling_error = false;
 403         if (handling_error)
 404                 return;
 405         handling_error = true;
 406
 407         // We have received a signal indicating a fatal error, so
 408         // try and save the data ASAP.
 409         LyX::cref().emergencyCleanup();
 410
 411         // These lyxerr calls may or may not work:
 412
 413         // Signals are asynchronous, so the main program may be in a very
 414         // fragile state when a signal is processed and thus while a signal
 415         // handler function executes.
 416         // In general, therefore, we should avoid performing any
 417         // I/O operations or calling most library and system functions from
 418         // signal handlers.
 419
 420         // This shouldn't matter here, however, as we've already invoked
 421         // emergencyCleanup.
 422         switch (err_sig) {
 423 #ifdef SIGHUP
 424         case SIGHUP:
 425                 lyxerr << "\nlyx: SIGHUP signal caught\nBye." << endl;
 426                 break;
 427 #endif
 428         case SIGFPE:
 429                 lyxerr << "\nlyx: SIGFPE signal caught\nBye." << endl;
 430                 break;
 431         case SIGSEGV:
 432                 lyxerr << "\nlyx: SIGSEGV signal caught\n"
 433                           "Sorry, you have found a bug in LyX. "
 434                           "Please read the bug-reporting instructions "
 435                           "in Help->Introduction and send us a bug report, "
 436                           "if necessary. Thanks !\nBye." << endl;
 437                 break;
 438         case SIGINT:
 439         case SIGTERM:
 440                 // no comments
 441                 break;
 442         }
 443
 444         // Deinstall the signal handlers
 445 #ifdef SIGHUP
 446         signal(SIGHUP, SIG_DFL);
 447 #endif
 448         signal(SIGINT, SIG_DFL);
 449         signal(SIGFPE, SIG_DFL);
 450         signal(SIGSEGV, SIG_DFL);
 451         signal(SIGTERM, SIG_DFL);
 452
 453 #ifdef SIGHUP
 454         if (err_sig == SIGSEGV ||
 455             (err_sig != SIGHUP && !getEnv("LYXDEBUG").empty()))
 456 #else
 457         if (err_sig == SIGSEGV || !getEnv("LYXDEBUG").empty())
 458 #endif
 459                 lyx::support::abort();
 460         exit(0);
 461 }
 462
 463 }
 464
 465
 466 void LyX::printError(ErrorItem const & ei)
 467 {
 468         std::cerr << _("LyX: ") << ei.error
 469                   << ':' << ei.description << std::endl;
 470
 471 }
 472
 473
 474 bool LyX::init()
 475 {
 476 #ifdef SIGHUP
 477         signal(SIGHUP, error_handler);
 478 #endif
 479         signal(SIGFPE, error_handler);
 480         signal(SIGSEGV, error_handler);
 481         signal(SIGINT, error_handler);
 482         signal(SIGTERM, error_handler);
 483         // SIGPIPE can be safely ignored.
 484
 485         lyxrc.tempdir_path = package().temp_dir();
 486         lyxrc.document_path = package().document_dir();
 487
 488         if (lyxrc.template_path.empty()) {
 489                 lyxrc.template_path = addPath(package().system_support(),
 490                                               "templates");
 491         }
 492
 493         if (lyxrc.roman_font_name.empty())
 494                 lyxrc.roman_font_name = lyx_gui::roman_font_name();
 495         if (lyxrc.sans_font_name.empty())
 496                 lyxrc.sans_font_name = lyx_gui::sans_font_name();
 497         if (lyxrc.typewriter_font_name.empty())
 498                 lyxrc.typewriter_font_name = lyx_gui::typewriter_font_name();
 499
 500         //
 501         // Read configuration files
 502         //
 503
 504         // This one may have been distributed along with LyX.
 505         if (!readRcFile("lyxrc.dist"))
 506                 return false;
 507
 508         // Set the PATH correctly.
 509 #if !defined (USE_POSIX_PACKAGING)
 510         // Add the directory containing the LyX executable to the path
 511         // so that LyX can find things like tex2lyx.
 512         if (package().build_support().empty())
 513                 prependEnvPath("PATH", package().binary_dir());
 514 #endif
 515         if (!lyxrc.path_prefix.empty())
 516                 prependEnvPath("PATH", lyxrc.path_prefix);
 517
 518         // Check that user LyX directory is ok. We don't do that if
 519         // running in batch mode.
 520         if (lyx_gui::use_gui) {
 521                 if (queryUserLyXDir(package().explicit_user_support()))
 522                         reconfigureUserLyXDir();
 523         } else {
 524                 first_start = false;
 525         }
 526
 527         // This one is generated in user_support directory by lib/configure.py.
 528         if (!readRcFile("lyxrc.defaults"))
 529                 return false;
 530
 531         // Query the OS to know what formats are viewed natively
 532         formats.setAutoOpen();
 533
 534         system_lyxrc = lyxrc;
 535         system_formats = formats;
 536         system_converters = converters;
 537         system_movers = movers;
 538         system_lcolor = lcolor;
 539
 540         // This one is edited through the preferences dialog.
 541         if (!readRcFile("preferences"))
 542                 return false;
 543
 544         if (!readEncodingsFile("encodings"))
 545                 return false;
 546         if (!readLanguagesFile("languages"))
 547                 return false;
 548
 549         // Load the layouts
 550         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 551         if (!LyXSetStyle())
 552                 return false;
 553
 554         if (lyx_gui::use_gui) {
 555                 // Set up bindings
 556                 toplevel_keymap.reset(new kb_keymap);
 557                 defaultKeyBindings(toplevel_keymap.get());
 558                 toplevel_keymap->read(lyxrc.bind_file);
 559
 560                 // Read menus
 561                 if (!readUIFile(lyxrc.ui_file))
 562                         return false;
 563         }
 564
 565         if (lyxerr.debugging(Debug::LYXRC))
 566                 lyxrc.print();
 567
 568         os::windows_style_tex_paths(lyxrc.windows_style_tex_paths);
 569         if (!lyxrc.path_prefix.empty())
 570                 prependEnvPath("PATH", lyxrc.path_prefix);
 571
 572         if (fs::exists(lyxrc.document_path) &&
 573             fs::is_directory(lyxrc.document_path))
 574                 package().document_dir() = lyxrc.document_path;
 575
 576         package().temp_dir() = createLyXTmpDir(lyxrc.tempdir_path);
 577         if (package().temp_dir().empty()) {
 578                 Alert::error(_("Could not create temporary directory"),
 579                              bformat(_("Could not create a temporary directory in\n"
 580                                        "%1$s. Make sure that this\n"
 581                                        "path exists and is writable and try again."),
 582                                      lyxrc.tempdir_path));
 583                 // createLyXTmpDir() tries sufficiently hard to create a
 584                 // usable temp dir, so the probability to come here is
 585                 // close to zero. We therefore don't try to overcome this
 586                 // problem with e.g. asking the user for a new path and
 587                 // trying again but simply exit.
 588                 return false;
 589         }
 590
 591         if (lyxerr.debugging(Debug::INIT)) {
 592                 lyxerr << "LyX tmp dir: `" << package().temp_dir() << '\'' << endl;
 593         }
 594
 595         lyxerr[Debug::INIT] << "Reading session information '.lyx/session'..." << endl;
 596         session_.reset(new lyx::Session(lyxrc.num_lastfiles));
 597         return true;
 598 }
 599
 600
 601 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 602 {
 603         kbmap->bind("Right", FuncRequest(LFUN_CHAR_FORWARD));
 604         kbmap->bind("Left", FuncRequest(LFUN_CHAR_BACKWARD));
 605         kbmap->bind("Up", FuncRequest(LFUN_UP));
 606         kbmap->bind("Down", FuncRequest(LFUN_DOWN));
 607
 608         kbmap->bind("Tab", FuncRequest(LFUN_CELL_FORWARD));
 609         kbmap->bind("C-Tab", FuncRequest(LFUN_CELL_SPLIT));
 610         kbmap->bind("~S-ISO_Left_Tab", FuncRequest(LFUN_CELL_BACKWARD));
 611         kbmap->bind("~S-BackTab", FuncRequest(LFUN_CELL_BACKWARD));
 612
 613         kbmap->bind("Home", FuncRequest(LFUN_LINE_BEGIN));
 614         kbmap->bind("End", FuncRequest(LFUN_LINE_END));
 615         kbmap->bind("Prior", FuncRequest(LFUN_SCREEN_UP));
 616         kbmap->bind("Next", FuncRequest(LFUN_SCREEN_DOWN));
 617
 618         kbmap->bind("Return", FuncRequest(LFUN_BREAK_PARAGRAPH));
 619         //kbmap->bind("~C-~S-~M-nobreakspace", FuncRequest(LFUN_PROTECTEDSPACE));
 620
 621         kbmap->bind("Delete", FuncRequest(LFUN_CHAR_DELETE_FORWARD));
 622         kbmap->bind("BackSpace", FuncRequest(LFUN_CHAR_DELETE_BACKWARD));
 623
 624         // kbmap->bindings to enable the use of the numeric keypad
 625         // e.g. Num Lock set
 626         //kbmap->bind("KP_0", FuncRequest(LFUN_SELF_INSERT));
 627         //kbmap->bind("KP_Decimal", FuncRequest(LFUN_SELF_INSERT));
 628         kbmap->bind("KP_Enter", FuncRequest(LFUN_BREAK_PARAGRAPH));
 629         //kbmap->bind("KP_1", FuncRequest(LFUN_SELF_INSERT));
 630         //kbmap->bind("KP_2", FuncRequest(LFUN_SELF_INSERT));
 631         //kbmap->bind("KP_3", FuncRequest(LFUN_SELF_INSERT));
 632         //kbmap->bind("KP_4", FuncRequest(LFUN_SELF_INSERT));
 633         //kbmap->bind("KP_5", FuncRequest(LFUN_SELF_INSERT));
 634         //kbmap->bind("KP_6", FuncRequest(LFUN_SELF_INSERT));
 635         //kbmap->bind("KP_Add", FuncRequest(LFUN_SELF_INSERT));
 636         //kbmap->bind("KP_7", FuncRequest(LFUN_SELF_INSERT));
 637         //kbmap->bind("KP_8", FuncRequest(LFUN_SELF_INSERT));
 638         //kbmap->bind("KP_9", FuncRequest(LFUN_SELF_INSERT));
 639         //kbmap->bind("KP_Divide", FuncRequest(LFUN_SELF_INSERT));
 640         //kbmap->bind("KP_Multiply", FuncRequest(LFUN_SELF_INSERT));
 641         //kbmap->bind("KP_Subtract", FuncRequest(LFUN_SELF_INSERT));
 642         kbmap->bind("KP_Right", FuncRequest(LFUN_CHAR_FORWARD));
 643         kbmap->bind("KP_Left", FuncRequest(LFUN_CHAR_BACKWARD));
 644         kbmap->bind("KP_Up", FuncRequest(LFUN_UP));
 645         kbmap->bind("KP_Down", FuncRequest(LFUN_DOWN));
 646         kbmap->bind("KP_Home", FuncRequest(LFUN_LINE_BEGIN));
 647         kbmap->bind("KP_End", FuncRequest(LFUN_LINE_END));
 648         kbmap->bind("KP_Prior", FuncRequest(LFUN_SCREEN_UP));
 649         kbmap->bind("KP_Next", FuncRequest(LFUN_SCREEN_DOWN));
 650 }
 651
 652
 653 void LyX::emergencyCleanup() const
 654 {
 655         // what to do about tmpfiles is non-obvious. we would
 656         // like to delete any we find, but our lyxdir might
 657         // contain documents etc. which might be helpful on
 658         // a crash
 659
 660         bufferlist.emergencyWriteAll();
 661         if (lyxserver)
 662                 lyxserver->emergencyCleanup();
 663 }
 664
 665
 666 void LyX::deadKeyBindings(kb_keymap * kbmap)
 667 {
 668         // bindKeyings for transparent handling of deadkeys
 669         // The keysyms are gotten from XFree86 X11R6
 670         kbmap->bind("~C-~S-~M-dead_acute", FuncRequest(LFUN_ACCENT_ACUTE));
 671         kbmap->bind("~C-~S-~M-dead_breve", FuncRequest(LFUN_ACCENT_BREVE));
 672         kbmap->bind("~C-~S-~M-dead_caron", FuncRequest(LFUN_ACCENT_CARON));
 673         kbmap->bind("~C-~S-~M-dead_cedilla", FuncRequest(LFUN_ACCENT_CEDILLA));
 674         kbmap->bind("~C-~S-~M-dead_abovering", FuncRequest(LFUN_ACCENT_CIRCLE));
 675         kbmap->bind("~C-~S-~M-dead_circumflex", FuncRequest(LFUN_ACCENT_CIRCUMFLEX));
 676         kbmap->bind("~C-~S-~M-dead_abovedot", FuncRequest(LFUN_ACCENT_DOT));
 677         kbmap->bind("~C-~S-~M-dead_grave", FuncRequest(LFUN_ACCENT_GRAVE));
 678         kbmap->bind("~C-~S-~M-dead_doubleacute", FuncRequest(LFUN_ACCENT_HUNGARIAN_UMLAUT));
 679         kbmap->bind("~C-~S-~M-dead_macron", FuncRequest(LFUN_ACCENT_MACRON));
 680         // nothing with this name
 681         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_ACCENT_SPECIAL_CARON);
 682         kbmap->bind("~C-~S-~M-dead_tilde", FuncRequest(LFUN_ACCENT_TILDE));
 683         kbmap->bind("~C-~S-~M-dead_diaeresis", FuncRequest(LFUN_ACCENT_UMLAUT));
 684         // nothing with this name either...
 685         //kbmap->bind("~C-~S-~M-dead_underbar", FuncRequest(LFUN_ACCENT_UNDERBAR));
 686         kbmap->bind("~C-~S-~M-dead_belowdot", FuncRequest(LFUN_ACCENT_UNDERDOT));
 687         kbmap->bind("~C-~S-~M-dead_tie", FuncRequest(LFUN_ACCENT_TIE));
 688         kbmap->bind("~C-~S-~M-dead_ogonek",FuncRequest(LFUN_ACCENT_OGONEK));
 689 }
 690
 691
 692 namespace {
 693
 694 // return true if file does not exist or is older than configure.py.
 695 bool needsUpdate(string const & file)
 696 {
 697         static string const configure_script =
 698                 addName(package().system_support(), "configure.py");
 699         string const absfile =
 700                 addName(package().user_support(), file);
 701
 702         return (! fs::exists(absfile))
 703                 || (fs::last_write_time(configure_script)
 704                     > fs::last_write_time(absfile));
 705 }
 706
 707 }
 708
 709
 710 bool LyX::queryUserLyXDir(bool explicit_userdir)
 711 {
 712         // Does user directory exist?
 713         if (fs::exists(package().user_support()) &&
 714             fs::is_directory(package().user_support())) {
 715                 first_start = false;
 716
 717                 return needsUpdate("lyxrc.defaults")
 718                         || needsUpdate("textclass.lst")
 719                         || needsUpdate("packages.lst");
 720         }
 721
 722         first_start = !explicit_userdir;
 723
 724         // If the user specified explicitly a directory, ask whether
 725         // to create it. If the user says "no", then exit.
 726         if (explicit_userdir &&
 727             Alert::prompt(
 728                     _("Missing user LyX directory"),
 729                     bformat(_("You have specified a non-existent user "
 730                               "LyX directory, %1$s.\n"
 731                               "It is needed to keep your own configuration."),
 732                             package().user_support()),
 733                     1, 0,
 734                     _("&Create directory"),
 735                     _("&Exit LyX"))) {
 736                 lyxerr << _("No user LyX directory. Exiting.") << endl;
 737                 lyx_exit(EXIT_FAILURE);
 738         }
 739
 740         lyxerr << bformat(_("LyX: Creating directory %1$s"),
 741                           package().user_support())
 742                << endl;
 743
 744         if (!createDirectory(package().user_support(), 0755)) {
 745                 // Failed, so let's exit.
 746                 lyxerr << _("Failed to create directory. Exiting.")
 747                        << endl;
 748                 lyx_exit(EXIT_FAILURE);
 749         }
 750
 751         return true;
 752 }
 753
 754
 755 bool LyX::readRcFile(string const & name)
 756 {
 757         lyxerr[Debug::INIT] << "About to read " << name << "... ";
 758
 759         string const lyxrc_path = libFileSearch(string(), name);
 760         if (!lyxrc_path.empty()) {
 761
 762                 lyxerr[Debug::INIT] << "Found in " << lyxrc_path << endl;
 763
 764                 if (lyxrc.read(lyxrc_path) < 0) {
 765                         showFileError(name);
 766                         return false;
 767                 }
 768         } else
 769                 lyxerr[Debug::INIT] << "Not found." << lyxrc_path << endl;
 770         return true;
 771
 772 }
 773
 774
 775 // Read the ui file `name'
 776 bool LyX::readUIFile(string const & name)
 777 {
 778         enum Uitags {
 779                 ui_menuset = 1,
 780                 ui_toolbar,
 781                 ui_toolbars,
 782                 ui_include,
 783                 ui_last
 784         };
 785
 786         struct keyword_item uitags[ui_last - 1] = {
 787                 { "include", ui_include },
 788                 { "menuset", ui_menuset },
 789                 { "toolbar", ui_toolbar },
 790                 { "toolbars", ui_toolbars }
 791         };
 792
 793         // Ensure that a file is read only once (prevents include loops)
 794         static std::list<string> uifiles;
 795         std::list<string>::const_iterator it  = uifiles.begin();
 796         std::list<string>::const_iterator end = uifiles.end();
 797         it = std::find(it, end, name);
 798         if (it != end) {
 799                 lyxerr[Debug::INIT] << "UI file '" << name
 800                                     << "' has been read already. "
 801                                     << "Is this an include loop?"
 802                                     << endl;
 803                 return false;
 804         }
 805
 806         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 807
 808         string const ui_path = libFileSearch("ui", name, "ui");
 809
 810         if (ui_path.empty()) {
 811                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 812                 showFileError(name);
 813                 return false;
 814         }
 815         uifiles.push_back(name);
 816
 817         lyxerr[Debug::INIT] << "Found " << name
 818                             << " in " << ui_path << endl;
 819         LyXLex lex(uitags, ui_last - 1);
 820         lex.setFile(ui_path);
 821         if (!lex.isOK()) {
 822                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 823                        << endl;
 824         }
 825
 826         if (lyxerr.debugging(Debug::PARSER))
 827                 lex.printTable(lyxerr);
 828
 829         while (lex.isOK()) {
 830                 switch (lex.lex()) {
 831                 case ui_include: {
 832                         lex.next(true);
 833                         string const file = lex.getString();
 834                         if (!readUIFile(file))
 835                                 return false;
 836                         break;
 837                 }
 838                 case ui_menuset:
 839                         menubackend.read(lex);
 840                         break;
 841
 842                 case ui_toolbar:
 843                         toolbarbackend.read(lex);
 844                         break;
 845
 846                 case ui_toolbars:
 847                         toolbarbackend.readToolbars(lex);
 848                         break;
 849
 850                 default:
 851                         if (!rtrim(lex.getString()).empty())
 852                                 lex.printError("LyX::ReadUIFile: "
 853                                                "Unknown menu tag: `$$Token'");
 854                         break;
 855                 }
 856         }
 857         return true;
 858 }
 859
 860
 861 // Read the languages file `name'
 862 bool LyX::readLanguagesFile(string const & name)
 863 {
 864         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 865
 866         string const lang_path = libFileSearch(string(), name);
 867         if (lang_path.empty()) {
 868                 showFileError(name);
 869                 return false;
 870         }
 871         languages.read(lang_path);
 872         return true;
 873 }
 874
 875
 876 // Read the encodings file `name'
 877 bool LyX::readEncodingsFile(string const & name)
 878 {
 879         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 880
 881         string const enc_path = libFileSearch(string(), name);
 882         if (enc_path.empty()) {
 883                 showFileError(name);
 884                 return false;
 885         }
 886         encodings.read(enc_path);
 887         return true;
 888 }
 889
 890
 891 namespace {
 892
 893 bool is_gui = true;
 894 string batch;
 895
 896 /// return the the number of arguments consumed
 897 typedef boost::function<int(string const &, string const &)> cmd_helper;
 898
 899 int parse_dbg(string const & arg, string const &)
 900 {
 901         if (arg.empty()) {
 902                 lyxerr << _("List of supported debug flags:") << endl;
 903                 Debug::showTags(lyxerr);
 904                 exit(0);
 905         }
 906         lyxerr << bformat(_("Setting debug level to %1$s"), arg) << endl;
 907
 908         lyxerr.level(Debug::value(arg));
 909         Debug::showLevel(lyxerr, lyxerr.level());
 910         return 1;
 911 }
 912
 913
 914 int parse_help(string const &, string const &)
 915 {
 916         lyxerr <<
 917                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 918                   "Command line switches (case sensitive):\n"
 919                   "\t-help              summarize LyX usage\n"
 920                   "\t-userdir dir       set user directory to dir\n"
 921                   "\t-sysdir dir        set system directory to dir\n"
 922                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 923                   "\t-dbg feature[,feature]...\n"
 924                   "                  select the features to debug.\n"
 925                   "                  Type `lyx -dbg' to see the list of features\n"
 926                   "\t-x [--execute] command\n"
 927                   "                  where command is a lyx command.\n"
 928                   "\t-e [--export] fmt\n"
 929                   "                  where fmt is the export format of choice.\n"
 930                   "\t-i [--import] fmt file.xxx\n"
 931                   "                  where fmt is the import format of choice\n"
 932                   "                  and file.xxx is the file to be imported.\n"
 933                   "\t-version        summarize version and build info\n"
 934                   "Check the LyX man page for more details.") << endl;
 935         exit(0);
 936         return 0;
 937 }
 938
 939 int parse_version(string const &, string const &)
 940 {
 941         lyxerr << "LyX " << lyx_version
 942                << " of " << lyx_release_date << endl;
 943         lyxerr << "Built on " << __DATE__ << ", " << __TIME__ << endl;
 944
 945         lyxerr << lyx_version_info << endl;
 946         exit(0);
 947         return 0;
 948 }
 949
 950 int parse_sysdir(string const & arg, string const &)
 951 {
 952         if (arg.empty()) {
 953                 lyxerr << _("Missing directory for -sysdir switch") << endl;
 954                 exit(1);
 955         }
 956         cl_system_support = arg;
 957         return 1;
 958 }
 959
 960 int parse_userdir(string const & arg, string const &)
 961 {
 962         if (arg.empty()) {
 963                 lyxerr << _("Missing directory for -userdir switch") << endl;
 964                 exit(1);
 965         }
 966         cl_user_support = arg;
 967         return 1;
 968 }
 969
 970 int parse_execute(string const & arg, string const &)
 971 {
 972         if (arg.empty()) {
 973                 lyxerr << _("Missing command string after --execute switch") << endl;
 974                 exit(1);
 975         }
 976         batch = arg;
 977         return 1;
 978 }
 979
 980 int parse_export(string const & type, string const &)
 981 {
 982         if (type.empty()) {
 983                 lyxerr << _("Missing file type [eg latex, ps...] after "
 984                         "--export switch") << endl;
 985                 exit(1);
 986         }
 987         batch = "buffer-export " + type;
 988         is_gui = false;
 989         return 1;
 990 }
 991
 992 int parse_import(string const & type, string const & file)
 993 {
 994         if (type.empty()) {
 995                 lyxerr << _("Missing file type [eg latex, ps...] after "
 996                         "--import switch") << endl;
 997                 exit(1);
 998         }
 999         if (file.empty()) {
1000                 lyxerr << _("Missing filename for --import") << endl;
1001                 exit(1);
1002         }
1003
1004         batch = "buffer-import " + type + ' ' + file;
1005         return 2;
1006 }
1007
1008 } // namespace anon
1009
1010
1011 bool LyX::easyParse(int & argc, char * argv[])
1012 {
1013         std::map<string, cmd_helper> cmdmap;
1014
1015         cmdmap["-dbg"] = parse_dbg;
1016         cmdmap["-help"] = parse_help;
1017         cmdmap["--help"] = parse_help;
1018         cmdmap["-version"] = parse_version;
1019         cmdmap["--version"] = parse_version;
1020         cmdmap["-sysdir"] = parse_sysdir;
1021         cmdmap["-userdir"] = parse_userdir;
1022         cmdmap["-x"] = parse_execute;
1023         cmdmap["--execute"] = parse_execute;
1024         cmdmap["-e"] = parse_export;
1025         cmdmap["--export"] = parse_export;
1026         cmdmap["-i"] = parse_import;
1027         cmdmap["--import"] = parse_import;
1028
1029         for (int i = 1; i < argc; ++i) {
1030                 std::map<string, cmd_helper>::const_iterator it
1031                         = cmdmap.find(argv[i]);
1032
1033                 // check for X11 -geometry option
1034                 if (lyx::support::compare(argv[i], "-geometry") == 0)
1035                         geometryOption_ = true;
1036
1037                 // don't complain if not found - may be parsed later
1038                 if (it == cmdmap.end())
1039                         continue;
1040
1041                 string arg((i + 1 < argc) ? argv[i + 1] : "");
1042                 string arg2((i + 2 < argc) ? argv[i + 2] : "");
1043
1044                 int const remove = 1 + it->second(arg, arg2);
1045
1046                 // Now, remove used arguments by shifting
1047                 // the following ones remove places down.
1048                 argc -= remove;
1049                 for (int j = i; j < argc; ++j)
1050                         argv[j] = argv[j + remove];
1051                 --i;
1052         }
1053
1054         batch_command = batch;
1055
1056         return is_gui;
1057 }