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