src/lyx_main.C

   1 /**
   2  * \file lyx_main.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alfredo Braunstein
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  * \author John Levon
  10  * \author André Pönitz
  11  *
  12  * Full author contact details are available in file CREDITS.
  13  */
  14
  15 #include <config.h>
  16 #include <version.h>
  17
  18 #include "lyx_main.h"
  19
  20 #include "buffer.h"
  21 #include "buffer_funcs.h"
  22 #include "bufferlist.h"
  23 #include "converter.h"
  24 #include "debug.h"
  25 #include "encoding.h"
  26 #include "errorlist.h"
  27 #include "format.h"
  28 #include "gettext.h"
  29 #include "kbmap.h"
  30 #include "language.h"
  31 #include "lastfiles.h"
  32 #include "LColor.h"
  33 #include "lyxfunc.h"
  34 #include "lyxlex.h"
  35 #include "lyxrc.h"
  36 #include "lyxtextclasslist.h"
  37 #include "lyxserver.h"
  38 #include "MenuBackend.h"
  39 #include "ToolbarBackend.h"
  40
  41 #include "frontends/Alert.h"
  42 #include "frontends/lyx_gui.h"
  43 #include "frontends/LyXView.h"
  44
  45 #include "support/FileInfo.h"
  46 #include "support/filetools.h"
  47 #include "support/lyxlib.h"
  48 #include "support/os.h"
  49 #include "support/path.h"
  50 #include "support/path_defines.h"
  51
  52 #include <boost/bind.hpp>
  53
  54 #include <iostream>
  55 #include <csignal>
  56
  57 using lyx::support::AddName;
  58 using lyx::support::AddPath;
  59 using lyx::support::bformat;
  60 using lyx::support::createDirectory;
  61 using lyx::support::CreateLyXTmpDir;
  62 using lyx::support::FileInfo;
  63 using lyx::support::FileSearch;
  64 using lyx::support::GetEnv;
  65 using lyx::support::GetEnvPath;
  66 using lyx::support::i18nLibFileSearch;
  67 using lyx::support::LibFileSearch;
  68 using lyx::support::Path;
  69 using lyx::support::rtrim;
  70 using lyx::support::setLyxPaths;
  71 using lyx::support::system_lyxdir;
  72 using lyx::support::user_lyxdir;
  73
  74 namespace os = lyx::support::os;
  75
  76 using std::endl;
  77 using std::string;
  78 using std::vector;
  79
  80 #ifndef CXX_GLOBAL_CSTD
  81 using std::exit;
  82 using std::signal;
  83 using std::system;
  84 #endif
  85
  86
  87 extern void QuitLyX();
  88
  89 extern LyXServer * lyxserver;
  90
  91 // This is the global bufferlist object
  92 BufferList bufferlist;
  93
  94 // convenient to have it here.
  95 boost::scoped_ptr<kb_keymap> toplevel_keymap;
  96
  97 namespace {
  98
  99 void showFileError(string const & error)
 100 {
 101         Alert::warning(_("Could not read configuration file"),
 102                    bformat(_("Error while reading the configuration file\n%1$s.\n"
 103                      "Please check your installation."), error));
 104         exit(EXIT_FAILURE);
 105 }
 106
 107 } // namespace anon
 108
 109
 110 boost::scoped_ptr<LyX> LyX::singleton_;
 111
 112 void LyX::exec(int & argc, char * argv[])
 113 {
 114         BOOST_ASSERT(!singleton_.get());
 115         // We must return from this before launching the gui so that
 116         // other parts of the code can access singleton_ through
 117         // LyX::ref and LyX::cref.
 118         singleton_.reset(new LyX);
 119         // Start the real execution loop.
 120         singleton_->priv_exec(argc, argv);
 121 }
 122
 123
 124 LyX & LyX::ref()
 125 {
 126         BOOST_ASSERT(singleton_.get());
 127         return *singleton_.get();
 128 }
 129
 130
 131 LyX const & LyX::cref()
 132 {
 133         BOOST_ASSERT(singleton_.get());
 134         return *singleton_.get();
 135 }
 136
 137
 138 LyX::LyX()
 139         : first_start(false)
 140 {}
 141
 142
 143 LastFiles & LyX::lastfiles()
 144 {
 145         BOOST_ASSERT(lastfiles_.get());
 146         return *lastfiles_.get();
 147 }
 148
 149
 150 LastFiles const & LyX::lastfiles() const
 151 {
 152         BOOST_ASSERT(lastfiles_.get());
 153         return *lastfiles_.get();
 154 }
 155
 156
 157 void LyX::addLyXView(boost::shared_ptr<LyXView> const & lyxview)
 158 {
 159         views_.push_back(lyxview);
 160 }
 161
 162
 163 Buffer const * const LyX::updateInset(InsetOld const * inset) const
 164 {
 165         if (!inset)
 166                 return 0;
 167
 168         Buffer const * buffer_ptr = 0;
 169         ViewList::const_iterator it = views_.begin();
 170         ViewList::const_iterator const end = views_.end();
 171         for (; it != end; ++it) {
 172                 Buffer const * ptr = (*it)->updateInset(inset);
 173                 if (ptr)
 174                         buffer_ptr = ptr;
 175         }
 176         return buffer_ptr;
 177 }
 178
 179
 180 void LyX::priv_exec(int & argc, char * argv[])
 181 {
 182         // Here we need to parse the command line. At least
 183         // we need to parse for "-dbg" and "-help"
 184         bool const want_gui = easyParse(argc, argv);
 185
 186         if (want_gui)
 187                 lyx_gui::parse_init(argc, argv);
 188
 189         // check for any spurious extra arguments
 190         // other than documents
 191         for (int argi = 1; argi < argc ; ++argi) {
 192                 if (argv[argi][0] == '-') {
 193                         lyxerr << bformat(_("Wrong command line option `%1$s'. Exiting."),
 194                                 argv[argi]) << endl;
 195                         exit(1);
 196                 }
 197         }
 198
 199         // Initialization of LyX (reads lyxrc and more)
 200         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 201         init(want_gui);
 202         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 203
 204         if (want_gui)
 205                 lyx_gui::parse_lyxrc();
 206
 207         vector<string> files;
 208
 209         for (int argi = argc - 1; argi >= 1; --argi)
 210                 files.push_back(argv[argi]);
 211
 212         if (first_start)
 213                 files.push_back(i18nLibFileSearch("examples", "splash.lyx"));
 214
 215         // Execute batch commands if available
 216         if (!batch_command.empty()) {
 217
 218                 lyxerr[Debug::INIT] << "About to handle -x '"
 219                        << batch_command << '\'' << endl;
 220
 221                 Buffer * last_loaded = 0;
 222
 223                 vector<string>::const_iterator it = files.begin();
 224                 vector<string>::const_iterator end = files.end();
 225
 226                 for (; it != end; ++it) {
 227                         // get absolute path of file and add ".lyx" to
 228                         // the filename if necessary
 229                         string s = FileSearch(string(), *it, "lyx");
 230                         if (s.empty()) {
 231                                 last_loaded = newFile(*it, string(), true);
 232                         } else {
 233                                 Buffer * buf = bufferlist.newBuffer(s, false);
 234                                 buf->error.connect(boost::bind(&LyX::printError, this, _1));
 235                                 if (loadLyXFile(buf, s))
 236                                         last_loaded = buf;
 237                                 else
 238                                         bufferlist.release(buf);
 239                         }
 240                 }
 241
 242                 // try to dispatch to last loaded buffer first
 243                 if (last_loaded) {
 244                         bool success = false;
 245                         if (last_loaded->dispatch(batch_command, &success)) {
 246                                 QuitLyX();
 247                                 exit(!success);
 248                         }
 249                 }
 250                 files.clear(); // the files are already loaded
 251         }
 252
 253         lyx_gui::start(batch_command, files);
 254 }
 255
 256
 257 extern "C" {
 258
 259 static void error_handler(int err_sig)
 260 {
 261         switch (err_sig) {
 262         case SIGHUP:
 263                 lyxerr << "\nlyx: SIGHUP signal caught" << endl;
 264                 break;
 265         case SIGINT:
 266                 // no comments
 267                 break;
 268         case SIGFPE:
 269                 lyxerr << "\nlyx: SIGFPE signal caught" << endl;
 270                 break;
 271         case SIGSEGV:
 272                 lyxerr << "\nlyx: SIGSEGV signal caught" << endl;
 273                 lyxerr <<
 274                         "Sorry, you have found a bug in LyX. "
 275                         "Please read the bug-reporting instructions "
 276                         "in Help->Introduction and send us a bug report, "
 277                         "if necessary. Thanks !" << endl;
 278                 break;
 279         case SIGTERM:
 280                 // no comments
 281                 break;
 282         case SIGPIPE:
 283                 // This will be received if lyx tries to write to a socket
 284                 // whose reading end was closed. It can safely be ignored,
 285                 // as in this case the ::write() system call will return -1
 286                 // and errno will be set to EPIPE
 287                 return;
 288                 //break;
 289         }
 290
 291         // Deinstall the signal handlers
 292         signal(SIGHUP, SIG_DFL);
 293         signal(SIGINT, SIG_DFL);
 294         signal(SIGFPE, SIG_DFL);
 295         signal(SIGSEGV, SIG_DFL);
 296         signal(SIGTERM, SIG_DFL);
 297         signal(SIGPIPE, SIG_DFL);
 298
 299         LyX::cref().emergencyCleanup();
 300
 301         lyxerr << "Bye." << endl;
 302         if (err_sig!= SIGHUP &&
 303            (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
 304                 lyx::support::abort();
 305         exit(0);
 306 }
 307
 308 }
 309
 310
 311 void LyX::printError(ErrorItem const & ei)
 312 {
 313         std::cerr << _("LyX: ") << ei.error
 314                   << ':' << ei.description << std::endl;
 315
 316 }
 317
 318
 319 void LyX::init(bool gui)
 320 {
 321         signal(SIGHUP, error_handler);
 322         signal(SIGFPE, error_handler);
 323         signal(SIGSEGV, error_handler);
 324         signal(SIGINT, error_handler);
 325         signal(SIGTERM, error_handler);
 326         signal(SIGPIPE, error_handler);
 327
 328         bool const explicit_userdir = setLyxPaths();
 329
 330         // Check that user LyX directory is ok. We don't do that if
 331         // running in batch mode.
 332         if (gui) {
 333                 queryUserLyXDir(explicit_userdir);
 334         } else {
 335                 first_start = false;
 336         }
 337
 338         // Disable gui when easyparse says so
 339         lyx_gui::use_gui = gui;
 340
 341         if (lyxrc.template_path.empty()) {
 342                 lyxrc.template_path = AddPath(system_lyxdir(), "templates");
 343         }
 344
 345         if (lyxrc.lastfiles.empty()) {
 346                 lyxrc.lastfiles = AddName(user_lyxdir(), "lastfiles");
 347         }
 348
 349         if (lyxrc.roman_font_name.empty())
 350                 lyxrc.roman_font_name = lyx_gui::roman_font_name();
 351         if (lyxrc.sans_font_name.empty())
 352                 lyxrc.sans_font_name = lyx_gui::sans_font_name();
 353         if (lyxrc.typewriter_font_name.empty())
 354                 lyxrc.typewriter_font_name = lyx_gui::typewriter_font_name();
 355
 356         //
 357         // Read configuration files
 358         //
 359
 360         readRcFile("lyxrc.defaults");
 361         system_lyxrc = lyxrc;
 362         system_formats = formats;
 363         system_converters = converters;
 364         system_lcolor = lcolor;
 365
 366         string prefsfile = "preferences";
 367         // back compatibility to lyxs < 1.1.6
 368         if (LibFileSearch(string(), prefsfile).empty())
 369                 prefsfile = "lyxrc";
 370         if (!LibFileSearch(string(), prefsfile).empty())
 371                 readRcFile(prefsfile);
 372
 373         readEncodingsFile("encodings");
 374         readLanguagesFile("languages");
 375
 376         // Load the layouts
 377         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 378         LyXSetStyle();
 379
 380         if (gui) {
 381                 // Set up bindings
 382                 toplevel_keymap.reset(new kb_keymap);
 383                 defaultKeyBindings(toplevel_keymap.get());
 384                 toplevel_keymap->read(lyxrc.bind_file);
 385
 386                 // Read menus
 387                 readUIFile(lyxrc.ui_file);
 388         }
 389
 390         if (lyxerr.debugging(Debug::LYXRC))
 391                 lyxrc.print();
 392
 393         os::setTmpDir(CreateLyXTmpDir(lyxrc.tempdir_path));
 394         if (lyxerr.debugging(Debug::INIT)) {
 395                 lyxerr << "LyX tmp dir: `" << os::getTmpDir() << '\'' << endl;
 396         }
 397
 398         lyxerr[Debug::INIT] << "Reading lastfiles `"
 399                             << lyxrc.lastfiles << "'..." << endl;
 400         lastfiles_.reset(new LastFiles(lyxrc.lastfiles,
 401                                        lyxrc.check_lastfiles,
 402                                        lyxrc.num_lastfiles));
 403 }
 404
 405
 406 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 407 {
 408         kbmap->bind("Right", FuncRequest(LFUN_RIGHT));
 409         kbmap->bind("Left", FuncRequest(LFUN_LEFT));
 410         kbmap->bind("Up", FuncRequest(LFUN_UP));
 411         kbmap->bind("Down", FuncRequest(LFUN_DOWN));
 412
 413         kbmap->bind("Tab", FuncRequest(LFUN_CELL_FORWARD));
 414         kbmap->bind("ISO_Left_Tab", FuncRequest(LFUN_CELL_FORWARD));
 415
 416         kbmap->bind("Home", FuncRequest(LFUN_HOME));
 417         kbmap->bind("End", FuncRequest(LFUN_END));
 418         kbmap->bind("Prior", FuncRequest(LFUN_PRIOR));
 419         kbmap->bind("Next", FuncRequest(LFUN_NEXT));
 420
 421         kbmap->bind("Return", FuncRequest(LFUN_BREAKPARAGRAPH));
 422         //kbmap->bind("~C-~S-~M-nobreakspace", FuncRequest(LFUN_PROTECTEDSPACE));
 423
 424         kbmap->bind("Delete", FuncRequest(LFUN_DELETE));
 425         kbmap->bind("BackSpace", FuncRequest(LFUN_BACKSPACE));
 426
 427         // kbmap->bindings to enable the use of the numeric keypad
 428         // e.g. Num Lock set
 429         //kbmap->bind("KP_0", FuncRequest(LFUN_SELFINSERT));
 430         //kbmap->bind("KP_Decimal", FuncRequest(LFUN_SELFINSERT));
 431         kbmap->bind("KP_Enter", FuncRequest(LFUN_BREAKPARAGRAPH));
 432         //kbmap->bind("KP_1", FuncRequest(LFUN_SELFINSERT));
 433         //kbmap->bind("KP_2", FuncRequest(LFUN_SELFINSERT));
 434         //kbmap->bind("KP_3", FuncRequest(LFUN_SELFINSERT));
 435         //kbmap->bind("KP_4", FuncRequest(LFUN_SELFINSERT));
 436         //kbmap->bind("KP_5", FuncRequest(LFUN_SELFINSERT));
 437         //kbmap->bind("KP_6", FuncRequest(LFUN_SELFINSERT));
 438         //kbmap->bind("KP_Add", FuncRequest(LFUN_SELFINSERT));
 439         //kbmap->bind("KP_7", FuncRequest(LFUN_SELFINSERT));
 440         //kbmap->bind("KP_8", FuncRequest(LFUN_SELFINSERT));
 441         //kbmap->bind("KP_9", FuncRequest(LFUN_SELFINSERT));
 442         //kbmap->bind("KP_Divide", FuncRequest(LFUN_SELFINSERT));
 443         //kbmap->bind("KP_Multiply", FuncRequest(LFUN_SELFINSERT));
 444         //kbmap->bind("KP_Subtract", FuncRequest(LFUN_SELFINSERT));
 445         kbmap->bind("KP_Right", FuncRequest(LFUN_RIGHT));
 446         kbmap->bind("KP_Left", FuncRequest(LFUN_LEFT));
 447         kbmap->bind("KP_Up", FuncRequest(LFUN_UP));
 448         kbmap->bind("KP_Down", FuncRequest(LFUN_DOWN));
 449         kbmap->bind("KP_Home", FuncRequest(LFUN_HOME));
 450         kbmap->bind("KP_End", FuncRequest(LFUN_END));
 451         kbmap->bind("KP_Prior", FuncRequest(LFUN_PRIOR));
 452         kbmap->bind("KP_Next", FuncRequest(LFUN_NEXT));
 453
 454         kbmap->bind("C-Tab", FuncRequest(LFUN_CELL_SPLIT));
 455         kbmap->bind("S-Tab", FuncRequest(LFUN_CELL_BACKWARD));
 456         kbmap->bind("S-ISO_Left_Tab", FuncRequest(LFUN_CELL_BACKWARD));
 457 }
 458
 459
 460 void LyX::emergencyCleanup() const
 461 {
 462         // what to do about tmpfiles is non-obvious. we would
 463         // like to delete any we find, but our lyxdir might
 464         // contain documents etc. which might be helpful on
 465         // a crash
 466
 467         bufferlist.emergencyWriteAll();
 468         if (lyxserver)
 469                 lyxserver->emergencyCleanup();
 470 }
 471
 472
 473 void LyX::deadKeyBindings(kb_keymap * kbmap)
 474 {
 475         // bindKeyings for transparent handling of deadkeys
 476         // The keysyms are gotten from XFree86 X11R6
 477         kbmap->bind("~C-~S-~M-dead_acute", FuncRequest(LFUN_ACUTE));
 478         kbmap->bind("~C-~S-~M-dead_breve", FuncRequest(LFUN_BREVE));
 479         kbmap->bind("~C-~S-~M-dead_caron", FuncRequest(LFUN_CARON));
 480         kbmap->bind("~C-~S-~M-dead_cedilla", FuncRequest(LFUN_CEDILLA));
 481         kbmap->bind("~C-~S-~M-dead_abovering", FuncRequest(LFUN_CIRCLE));
 482         kbmap->bind("~C-~S-~M-dead_circumflex", FuncRequest(LFUN_CIRCUMFLEX));
 483         kbmap->bind("~C-~S-~M-dead_abovedot", FuncRequest(LFUN_DOT));
 484         kbmap->bind("~C-~S-~M-dead_grave", FuncRequest(LFUN_GRAVE));
 485         kbmap->bind("~C-~S-~M-dead_doubleacute", FuncRequest(LFUN_HUNG_UMLAUT));
 486         kbmap->bind("~C-~S-~M-dead_macron", FuncRequest(LFUN_MACRON));
 487         // nothing with this name
 488         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 489         kbmap->bind("~C-~S-~M-dead_tilde", FuncRequest(LFUN_TILDE));
 490         kbmap->bind("~C-~S-~M-dead_diaeresis", FuncRequest(LFUN_UMLAUT));
 491         // nothing with this name either...
 492         //kbmap->bind("~C-~S-~M-dead_underbar", FuncRequest(LFUN_UNDERBAR));
 493         kbmap->bind("~C-~S-~M-dead_belowdot", FuncRequest(LFUN_UNDERDOT));
 494         kbmap->bind("~C-~S-~M-dead_tie", FuncRequest(LFUN_TIE));
 495         kbmap->bind("~C-~S-~M-dead_ogonek",FuncRequest(LFUN_OGONEK));
 496 }
 497
 498
 499 void LyX::queryUserLyXDir(bool explicit_userdir)
 500 {
 501         string const configure_script = AddName(system_lyxdir(), "configure");
 502
 503         // Does user directory exist?
 504         FileInfo fileInfo(user_lyxdir());
 505         if (fileInfo.isOK() && fileInfo.isDir()) {
 506                 first_start = false;
 507                 FileInfo script(configure_script);
 508                 FileInfo defaults(AddName(user_lyxdir(), "lyxrc.defaults"));
 509                 if (defaults.isOK() && script.isOK()
 510                     && defaults.getModificationTime() < script.getModificationTime()) {
 511                         lyxerr << _("LyX: reconfiguring user directory")
 512                                << endl;
 513                         Path p(user_lyxdir());
 514                         ::system(configure_script.c_str());
 515                         lyxerr << "LyX: " << _("Done!") << endl;
 516                 }
 517                 return;
 518         }
 519
 520         first_start = !explicit_userdir;
 521
 522         lyxerr << bformat(_("LyX: Creating directory %1$s"
 523                                   " and running configure..."), user_lyxdir()) << endl;
 524
 525         if (!createDirectory(user_lyxdir(), 0755)) {
 526                 // Failed, let's use $HOME instead.
 527                 user_lyxdir(GetEnvPath("HOME"));
 528                 lyxerr << bformat(_("Failed. Will use %1$s instead."),
 529                         user_lyxdir()) << endl;
 530                 return;
 531         }
 532
 533         // Run configure in user lyx directory
 534         Path p(user_lyxdir());
 535         ::system(configure_script.c_str());
 536         lyxerr << "LyX: " << _("Done!") << endl;
 537 }
 538
 539
 540 void LyX::readRcFile(string const & name)
 541 {
 542         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 543
 544         string const lyxrc_path = LibFileSearch(string(), name);
 545         if (!lyxrc_path.empty()) {
 546
 547                 lyxerr[Debug::INIT] << "Found " << name
 548                                     << " in " << lyxrc_path << endl;
 549
 550                 if (lyxrc.read(lyxrc_path) >= 0)
 551                         return;
 552         }
 553
 554         showFileError(name);
 555 }
 556
 557
 558 // Read the ui file `name'
 559 void LyX::readUIFile(string const & name)
 560 {
 561         enum Uitags {
 562                 ui_menuset = 1,
 563                 ui_toolbar,
 564                 ui_toolbars,
 565                 ui_include,
 566                 ui_last
 567         };
 568
 569         struct keyword_item uitags[ui_last - 1] = {
 570                 { "include", ui_include },
 571                 { "menuset", ui_menuset },
 572                 { "toolbar", ui_toolbar },
 573                 { "toolbars", ui_toolbars }
 574         };
 575
 576         // Ensure that a file is read only once (prevents include loops)
 577         static std::list<string> uifiles;
 578         std::list<string>::const_iterator it  = uifiles.begin();
 579         std::list<string>::const_iterator end = uifiles.end();
 580         it = std::find(it, end, name);
 581         if (it != end) {
 582                 lyxerr[Debug::INIT] << "UI file '" << name
 583                                     << "' has been read already. "
 584                                     << "Is this an include loop?"
 585                                     << endl;
 586                 return;
 587         }
 588
 589         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 590
 591         string const ui_path = LibFileSearch("ui", name, "ui");
 592
 593         if (ui_path.empty()) {
 594                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 595                 showFileError(name);
 596                 return;
 597         }
 598         uifiles.push_back(name);
 599
 600         lyxerr[Debug::INIT] << "Found " << name
 601                             << " in " << ui_path << endl;
 602         LyXLex lex(uitags, ui_last - 1);
 603         lex.setFile(ui_path);
 604         if (!lex.isOK()) {
 605                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 606                        << endl;
 607         }
 608
 609         if (lyxerr.debugging(Debug::PARSER))
 610                 lex.printTable(lyxerr);
 611
 612         while (lex.isOK()) {
 613                 switch (lex.lex()) {
 614                 case ui_include: {
 615                         lex.next(true);
 616                         string const file = lex.getString();
 617                         readUIFile(file);
 618                         break;
 619                 }
 620                 case ui_menuset:
 621                         menubackend.read(lex);
 622                         break;
 623
 624                 case ui_toolbar:
 625                         toolbarbackend.read(lex);
 626                         break;
 627
 628                 case ui_toolbars:
 629                         toolbarbackend.readToolbars(lex);
 630                         break;
 631
 632                 default:
 633                         if (!rtrim(lex.getString()).empty())
 634                                 lex.printError("LyX::ReadUIFile: "
 635                                                "Unknown menu tag: `$$Token'");
 636                         break;
 637                 }
 638         }
 639 }
 640
 641
 642 // Read the languages file `name'
 643 void LyX::readLanguagesFile(string const & name)
 644 {
 645         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 646
 647         string const lang_path = LibFileSearch(string(), name);
 648         if (lang_path.empty()) {
 649                 showFileError(name);
 650                 return;
 651         }
 652         languages.read(lang_path);
 653 }
 654
 655
 656 // Read the encodings file `name'
 657 void LyX::readEncodingsFile(string const & name)
 658 {
 659         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 660
 661         string const enc_path = LibFileSearch(string(), name);
 662         if (enc_path.empty()) {
 663                 showFileError(name);
 664                 return;
 665         }
 666         encodings.read(enc_path);
 667 }
 668
 669
 670 namespace {
 671
 672 bool is_gui = true;
 673 string batch;
 674
 675 /// return the the number of arguments consumed
 676 typedef boost::function<int(string const &, string const &)> cmd_helper;
 677
 678 int parse_dbg(string const & arg, string const &)
 679 {
 680         if (arg.empty()) {
 681                 lyxerr << _("List of supported debug flags:") << endl;
 682                 Debug::showTags(lyxerr);
 683                 exit(0);
 684         }
 685         lyxerr << bformat(_("Setting debug level to %1$s"), arg) << endl;
 686
 687         lyxerr.level(Debug::value(arg));
 688         Debug::showLevel(lyxerr, lyxerr.level());
 689         return 1;
 690 }
 691
 692
 693 int parse_help(string const &, string const &)
 694 {
 695         lyxerr <<
 696                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 697                   "Command line switches (case sensitive):\n"
 698                   "\t-help              summarize LyX usage\n"
 699                   "\t-userdir dir       try to set user directory to dir\n"
 700                   "\t-sysdir dir        try to set system directory to dir\n"
 701                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 702                   "\t-dbg feature[,feature]...\n"
 703                   "                  select the features to debug.\n"
 704                   "                  Type `lyx -dbg' to see the list of features\n"
 705                   "\t-x [--execute] command\n"
 706                   "                  where command is a lyx command.\n"
 707                   "\t-e [--export] fmt\n"
 708                   "                  where fmt is the export format of choice.\n"
 709                   "\t-i [--import] fmt file.xxx\n"
 710                   "                  where fmt is the import format of choice\n"
 711                   "                  and file.xxx is the file to be imported.\n"
 712                   "\t-version        summarize version and build info\n"
 713                   "Check the LyX man page for more details.") << endl;
 714         exit(0);
 715         return 0;
 716 }
 717
 718 int parse_version(string const &, string const &)
 719 {
 720         lyxerr << "LyX " << lyx_version
 721                << " of " << lyx_release_date << endl;
 722         lyxerr << "Built on " << __DATE__ << ", " << __TIME__ << endl;
 723
 724         lyxerr << lyx_version_info << endl;
 725         exit(0);
 726         return 0;
 727 }
 728
 729 int parse_sysdir(string const & arg, string const &)
 730 {
 731         if (arg.empty()) {
 732                 lyxerr << _("Missing directory for -sysdir switch") << endl;
 733                 exit(1);
 734         }
 735         system_lyxdir(arg);
 736         return 1;
 737 }
 738
 739 int parse_userdir(string const & arg, string const &)
 740 {
 741         if (arg.empty()) {
 742                 lyxerr << _("Missing directory for -userdir switch") << endl;
 743                 exit(1);
 744         }
 745         user_lyxdir(arg);
 746         return 1;
 747 }
 748
 749 int parse_execute(string const & arg, string const &)
 750 {
 751         if (arg.empty()) {
 752                 lyxerr << _("Missing command string after --execute switch") << endl;
 753                 exit(1);
 754         }
 755         batch = arg;
 756         // Argh. Setting gui to false segfaults..
 757         // FIXME: when ? how ?
 758         // is_gui = false;
 759         return 1;
 760 }
 761
 762 int parse_export(string const & type, string const &)
 763 {
 764         if (type.empty()) {
 765                 lyxerr << _("Missing file type [eg latex, ps...] after "
 766                         "--export switch") << endl;
 767                 exit(1);
 768         }
 769         batch = "buffer-export " + type;
 770         is_gui = false;
 771         return 1;
 772 }
 773
 774 int parse_import(string const & type, string const & file)
 775 {
 776         if (type.empty()) {
 777                 lyxerr << _("Missing file type [eg latex, ps...] after "
 778                         "--import switch") << endl;
 779                 exit(1);
 780         }
 781         if (file.empty()) {
 782                 lyxerr << _("Missing filename for --import") << endl;
 783                 exit(1);
 784         }
 785
 786         batch = "buffer-import " + type + ' ' + file;
 787         return 2;
 788 }
 789
 790 } // namespace anon
 791
 792
 793 bool LyX::easyParse(int & argc, char * argv[])
 794 {
 795         std::map<string, cmd_helper> cmdmap;
 796
 797         cmdmap["-dbg"] = parse_dbg;
 798         cmdmap["-help"] = parse_help;
 799         cmdmap["--help"] = parse_help;
 800         cmdmap["-version"] = parse_version;
 801         cmdmap["--version"] = parse_version;
 802         cmdmap["-sysdir"] = parse_sysdir;
 803         cmdmap["-userdir"] = parse_userdir;
 804         cmdmap["-x"] = parse_execute;
 805         cmdmap["--execute"] = parse_execute;
 806         cmdmap["-e"] = parse_export;
 807         cmdmap["--export"] = parse_export;
 808         cmdmap["-i"] = parse_import;
 809         cmdmap["--import"] = parse_import;
 810
 811         for (int i = 1; i < argc; ++i) {
 812                 std::map<string, cmd_helper>::const_iterator it
 813                         = cmdmap.find(argv[i]);
 814
 815                 // don't complain if not found - may be parsed later
 816                 if (it == cmdmap.end())
 817                         continue;
 818
 819                 string arg((i + 1 < argc) ? argv[i + 1] : "");
 820                 string arg2((i + 2 < argc) ? argv[i + 2] : "");
 821
 822                 int const remove = 1 + it->second(arg, arg2);
 823
 824                 // Now, remove used arguments by shifting
 825                 // the following ones remove places down.
 826                 argc -= remove;
 827                 for (int j = i; j < argc; ++j)
 828                         argv[j] = argv[j + remove];
 829                 --i;
 830         }
 831
 832         batch_command = batch;
 833
 834         return is_gui;
 835 }