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