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::os;
  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 using std::endl;
  75
  76 using std::vector;
  77
  78 #ifndef CXX_GLOBAL_CSTD
  79 using std::exit;
  80 using std::signal;
  81 using std::system;
  82 #endif
  83
  84
  85 extern void QuitLyX();
  86
  87 extern LyXServer * lyxserver;
  88
  89 DebugStream lyxerr;
  90
  91 boost::scoped_ptr<LastFiles> lastfiles;
  92
  93 // This is the global bufferlist object
  94 BufferList bufferlist;
  95
  96 // convenient to have it here.
  97 boost::scoped_ptr<kb_keymap> toplevel_keymap;
  98
  99 namespace {
 100
 101 void showFileError(string const & error)
 102 {
 103         Alert::warning(_("Could not read configuration file"),
 104                    bformat(_("Error while reading the configuration file\n%1$s.\n"
 105                      "Please check your installation."), error));
 106         exit(EXIT_FAILURE);
 107 }
 108
 109 }
 110
 111 LyX::LyX(int & argc, char * argv[])
 112 {
 113         // Here we need to parse the command line. At least
 114         // we need to parse for "-dbg" and "-help"
 115         bool const want_gui = easyParse(argc, argv);
 116
 117         // set the DisplayTranslator only once; should that be done here??
 118         // if this should not be in this file, please also remove
 119         // #include "graphics/GraphicsTypes.h" at the top -- Rob Lahaye.
 120         lyx::graphics::setDisplayTranslator();
 121
 122         if (want_gui)
 123                 lyx_gui::parse_init(argc, argv);
 124
 125         // check for any spurious extra arguments
 126         // other than documents
 127         for (int argi = 1; argi < argc ; ++argi) {
 128                 if (argv[argi][0] == '-') {
 129                         lyxerr << bformat(_("Wrong command line option `%1$s'. Exiting."),
 130                                 argv[argi]) << endl;
 131                         exit(1);
 132                 }
 133         }
 134
 135         // Initialization of LyX (reads lyxrc and more)
 136         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 137         init(want_gui);
 138         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 139
 140         if (want_gui)
 141                 lyx_gui::parse_lyxrc();
 142
 143         vector<string> files;
 144
 145         for (int argi = argc - 1; argi >= 1; --argi)
 146                 files.push_back(argv[argi]);
 147
 148         if (first_start)
 149                 files.push_back(i18nLibFileSearch("examples", "splash.lyx"));
 150
 151         // Execute batch commands if available
 152         if (!batch_command.empty()) {
 153
 154                 lyxerr[Debug::INIT] << "About to handle -x '"
 155                        << batch_command << '\'' << endl;
 156
 157                 Buffer * last_loaded = 0;
 158
 159                 vector<string>::const_iterator it = files.begin();
 160                 vector<string>::const_iterator end = files.end();
 161
 162                 for (; it != end; ++it) {
 163                         // get absolute path of file and add ".lyx" to
 164                         // the filename if necessary
 165                         string s = FileSearch(string(), *it, "lyx");
 166                         if (s.empty()) {
 167                                 last_loaded = newFile(*it, string(), true);
 168                         } else {
 169                                 Buffer * buf = bufferlist.newBuffer(s, false);
 170                                 buf->error.connect(boost::bind(&LyX::printError, this, _1));
 171                                 if (loadLyXFile(buf, s))
 172                                         last_loaded = buf;
 173                                 else
 174                                         bufferlist.release(buf);
 175                         }
 176                 }
 177
 178                 // try to dispatch to last loaded buffer first
 179                 if (last_loaded) {
 180                         bool success = false;
 181                         if (last_loaded->dispatch(batch_command, &success)) {
 182                                 QuitLyX();
 183                                 exit(!success);
 184                         }
 185                 }
 186                 files.clear(); // the files are already loaded
 187         }
 188
 189         lyx_gui::start(batch_command, files);
 190 }
 191
 192
 193 extern "C" {
 194
 195 static void error_handler(int err_sig)
 196 {
 197         switch (err_sig) {
 198         case SIGHUP:
 199                 lyxerr << "\nlyx: SIGHUP signal caught" << endl;
 200                 break;
 201         case SIGINT:
 202                 // no comments
 203                 break;
 204         case SIGFPE:
 205                 lyxerr << "\nlyx: SIGFPE signal caught" << endl;
 206                 break;
 207         case SIGSEGV:
 208                 lyxerr << "\nlyx: SIGSEGV signal caught" << endl;
 209                 lyxerr <<
 210                         "Sorry, you have found a bug in LyX. "
 211                         "Please read the bug-reporting instructions "
 212                         "in Help->Introduction and send us a bug report, "
 213                         "if necessary. Thanks !" << endl;
 214                 break;
 215         case SIGTERM:
 216                 // no comments
 217                 break;
 218         }
 219
 220         // Deinstall the signal handlers
 221         signal(SIGHUP, SIG_DFL);
 222         signal(SIGINT, SIG_DFL);
 223         signal(SIGFPE, SIG_DFL);
 224         signal(SIGSEGV, SIG_DFL);
 225         signal(SIGTERM, SIG_DFL);
 226
 227         LyX::emergencyCleanup();
 228
 229         lyxerr << "Bye." << endl;
 230         if (err_sig!= SIGHUP &&
 231            (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
 232                 lyx::support::abort();
 233         exit(0);
 234 }
 235
 236 }
 237
 238
 239 void LyX::printError(ErrorItem const & ei)
 240 {
 241         std::cerr << _("LyX: ") << ei.error
 242                   << ':' << ei.description << std::endl;
 243
 244 }
 245
 246
 247 void LyX::init(bool gui)
 248 {
 249         signal(SIGHUP, error_handler);
 250         signal(SIGFPE, error_handler);
 251         signal(SIGSEGV, error_handler);
 252         signal(SIGINT, error_handler);
 253         signal(SIGTERM, error_handler);
 254
 255         bool const explicit_userdir = setLyxPaths();
 256
 257         // Check that user LyX directory is ok. We don't do that if
 258         // running in batch mode.
 259         if (gui) {
 260                 queryUserLyXDir(explicit_userdir);
 261         } else {
 262                 first_start = false;
 263         }
 264
 265         // Disable gui when easyparse says so
 266         lyx_gui::use_gui = gui;
 267
 268         if (lyxrc.template_path.empty()) {
 269                 lyxrc.template_path = AddPath(system_lyxdir(), "templates");
 270         }
 271
 272         if (lyxrc.lastfiles.empty()) {
 273                 lyxrc.lastfiles = AddName(user_lyxdir(), "lastfiles");
 274         }
 275
 276         if (lyxrc.roman_font_name.empty())
 277                 lyxrc.roman_font_name = lyx_gui::roman_font_name();
 278         if (lyxrc.sans_font_name.empty())
 279                 lyxrc.sans_font_name = lyx_gui::sans_font_name();
 280         if (lyxrc.typewriter_font_name.empty())
 281                 lyxrc.typewriter_font_name = lyx_gui::typewriter_font_name();
 282
 283         //
 284         // Read configuration files
 285         //
 286
 287         readRcFile("lyxrc.defaults");
 288         system_lyxrc = lyxrc;
 289         system_formats = formats;
 290         system_converters = converters;
 291         system_lcolor = lcolor;
 292
 293         string prefsfile = "preferences";
 294         // back compatibility to lyxs < 1.1.6
 295         if (LibFileSearch(string(), prefsfile).empty())
 296                 prefsfile = "lyxrc";
 297         if (!LibFileSearch(string(), prefsfile).empty())
 298                 readRcFile(prefsfile);
 299
 300         readEncodingsFile("encodings");
 301         readLanguagesFile("languages");
 302
 303         // Load the layouts
 304         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 305         LyXSetStyle();
 306
 307         if (gui) {
 308                 // Set up bindings
 309                 toplevel_keymap.reset(new kb_keymap);
 310                 defaultKeyBindings(toplevel_keymap.get());
 311                 toplevel_keymap->read(lyxrc.bind_file);
 312
 313                 // Read menus
 314                 readUIFile(lyxrc.ui_file);
 315         }
 316
 317         if (lyxerr.debugging(Debug::LYXRC))
 318                 lyxrc.print();
 319
 320         os::setTmpDir(CreateLyXTmpDir(lyxrc.tempdir_path));
 321         if (lyxerr.debugging(Debug::INIT)) {
 322                 lyxerr << "LyX tmp dir: `" << os::getTmpDir() << '\'' << endl;
 323         }
 324
 325         lyxerr[Debug::INIT] << "Reading lastfiles `"
 326                             << lyxrc.lastfiles << "'..." << endl;
 327         lastfiles.reset(new LastFiles(lyxrc.lastfiles,
 328                                       lyxrc.check_lastfiles,
 329                                       lyxrc.num_lastfiles));
 330 }
 331
 332
 333 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 334 {
 335         kbmap->bind("Right", LFUN_RIGHT);
 336         kbmap->bind("Left", LFUN_LEFT);
 337         kbmap->bind("Up", LFUN_UP);
 338         kbmap->bind("Down", LFUN_DOWN);
 339
 340         kbmap->bind("Tab", LFUN_CELL_FORWARD);
 341         kbmap->bind("ISO_Left_Tab", LFUN_CELL_FORWARD); // jbl 2001-23-02
 342
 343         kbmap->bind("Home", LFUN_HOME);
 344         kbmap->bind("End", LFUN_END);
 345         kbmap->bind("Prior", LFUN_PRIOR);
 346         kbmap->bind("Next", LFUN_NEXT);
 347
 348         kbmap->bind("Return", LFUN_BREAKPARAGRAPH);
 349         //kbmap->bind("~C-~S-~M-nobreakspace", LFUN_PROTECTEDSPACE);
 350
 351         kbmap->bind("Delete", LFUN_DELETE);
 352         kbmap->bind("BackSpace", LFUN_BACKSPACE);
 353
 354         // sub- and superscript -MV
 355         kbmap->bind("~S-underscore", LFUN_SUBSCRIPT);
 356         kbmap->bind("~S-asciicircum", LFUN_SUPERSCRIPT);
 357
 358         // kbmap->bindings to enable the use of the numeric keypad
 359         // e.g. Num Lock set
 360         //kbmap->bind("KP_0", LFUN_SELFINSERT);
 361         //kbmap->bind("KP_Decimal", LFUN_SELFINSERT);
 362         kbmap->bind("KP_Enter", LFUN_BREAKPARAGRAPH);
 363         //kbmap->bind("KP_1", LFUN_SELFINSERT);
 364         //kbmap->bind("KP_2", LFUN_SELFINSERT);
 365         //kbmap->bind("KP_3", LFUN_SELFINSERT);
 366         //kbmap->bind("KP_4", LFUN_SELFINSERT);
 367         //kbmap->bind("KP_5", LFUN_SELFINSERT);
 368         //kbmap->bind("KP_6", LFUN_SELFINSERT);
 369         //kbmap->bind("KP_Add", LFUN_SELFINSERT);
 370         //kbmap->bind("KP_7", LFUN_SELFINSERT);
 371         //kbmap->bind("KP_8", LFUN_SELFINSERT);
 372         //kbmap->bind("KP_9", LFUN_SELFINSERT);
 373         //kbmap->bind("KP_Divide", LFUN_SELFINSERT);
 374         //kbmap->bind("KP_Multiply", LFUN_SELFINSERT);
 375         //kbmap->bind("KP_Subtract", LFUN_SELFINSERT);
 376         kbmap->bind("KP_Right", LFUN_RIGHT);
 377         kbmap->bind("KP_Left", LFUN_LEFT);
 378         kbmap->bind("KP_Up", LFUN_UP);
 379         kbmap->bind("KP_Down", LFUN_DOWN);
 380         kbmap->bind("KP_Home", LFUN_HOME);
 381         kbmap->bind("KP_End", LFUN_END);
 382         kbmap->bind("KP_Prior", LFUN_PRIOR);
 383         kbmap->bind("KP_Next", LFUN_NEXT);
 384
 385         kbmap->bind("C-Tab", LFUN_CELL_SPLIT);  // ale970515
 386         kbmap->bind("S-Tab", LFUN_CELL_BACKWARD);  // jug20000522
 387         kbmap->bind("S-ISO_Left_Tab", LFUN_CELL_BACKWARD); // jbl 2001-23-02
 388 }
 389
 390
 391 void LyX::emergencyCleanup()
 392 {
 393         // what to do about tmpfiles is non-obvious. we would
 394         // like to delete any we find, but our lyxdir might
 395         // contain documents etc. which might be helpful on
 396         // a crash
 397
 398         bufferlist.emergencyWriteAll();
 399         if (lyxserver)
 400                 lyxserver->emergencyCleanup();
 401 }
 402
 403
 404 void LyX::deadKeyBindings(kb_keymap * kbmap)
 405 {
 406         // bindKeyings for transparent handling of deadkeys
 407         // The keysyms are gotten from XFree86 X11R6
 408         kbmap->bind("~C-~S-~M-dead_acute", LFUN_ACUTE);
 409         kbmap->bind("~C-~S-~M-dead_breve", LFUN_BREVE);
 410         kbmap->bind("~C-~S-~M-dead_caron", LFUN_CARON);
 411         kbmap->bind("~C-~S-~M-dead_cedilla", LFUN_CEDILLA);
 412         kbmap->bind("~C-~S-~M-dead_abovering", LFUN_CIRCLE);
 413         kbmap->bind("~C-~S-~M-dead_circumflex", LFUN_CIRCUMFLEX);
 414         kbmap->bind("~C-~S-~M-dead_abovedot", LFUN_DOT);
 415         kbmap->bind("~C-~S-~M-dead_grave", LFUN_GRAVE);
 416         kbmap->bind("~C-~S-~M-dead_doubleacute", LFUN_HUNG_UMLAUT);
 417         kbmap->bind("~C-~S-~M-dead_macron", LFUN_MACRON);
 418         // nothing with this name
 419         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 420         kbmap->bind("~C-~S-~M-dead_tilde", LFUN_TILDE);
 421         kbmap->bind("~C-~S-~M-dead_diaeresis", LFUN_UMLAUT);
 422         // nothing with this name either...
 423         //kbmap->bind("~C-~S-~M-dead_underbar", LFUN_UNDERBAR);
 424         kbmap->bind("~C-~S-~M-dead_belowdot", LFUN_UNDERDOT);
 425         kbmap->bind("~C-~S-~M-dead_tie", LFUN_TIE);
 426         kbmap->bind("~C-~S-~M-dead_ogonek", LFUN_OGONEK);
 427 }
 428
 429
 430 void LyX::queryUserLyXDir(bool explicit_userdir)
 431 {
 432         string const configure_script = AddName(system_lyxdir(), "configure");
 433
 434         // Does user directory exist?
 435         FileInfo fileInfo(user_lyxdir());
 436         if (fileInfo.isOK() && fileInfo.isDir()) {
 437                 first_start = false;
 438                 FileInfo script(configure_script);
 439                 FileInfo defaults(AddName(user_lyxdir(), "lyxrc.defaults"));
 440                 if (defaults.isOK() && script.isOK()
 441                     && defaults.getModificationTime() < script.getModificationTime()) {
 442                         lyxerr << _("LyX: reconfiguring user directory")
 443                                << endl;
 444                         Path p(user_lyxdir());
 445                         ::system(configure_script.c_str());
 446                         lyxerr << "LyX: " << _("Done!") << endl;
 447                 }
 448                 return;
 449         }
 450
 451         first_start = !explicit_userdir;
 452
 453         lyxerr << bformat(_("LyX: Creating directory %1$s"
 454                                   " and running configure..."), user_lyxdir()) << endl;
 455
 456         if (!createDirectory(user_lyxdir(), 0755)) {
 457                 // Failed, let's use $HOME instead.
 458                 user_lyxdir(GetEnvPath("HOME"));
 459                 lyxerr << bformat(_("Failed. Will use %1$s instead."),
 460                         user_lyxdir()) << endl;
 461                 return;
 462         }
 463
 464         // Run configure in user lyx directory
 465         Path p(user_lyxdir());
 466         ::system(configure_script.c_str());
 467         lyxerr << "LyX: " << _("Done!") << endl;
 468 }
 469
 470
 471 void LyX::readRcFile(string const & name)
 472 {
 473         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 474
 475         string const lyxrc_path = LibFileSearch(string(), name);
 476         if (!lyxrc_path.empty()) {
 477
 478                 lyxerr[Debug::INIT] << "Found " << name
 479                                     << " in " << lyxrc_path << endl;
 480
 481                 if (lyxrc.read(lyxrc_path) >= 0)
 482                         return;
 483         }
 484
 485         showFileError(name);
 486 }
 487
 488
 489 // Read the ui file `name'
 490 void LyX::readUIFile(string const & name)
 491 {
 492         enum Uitags {
 493                 ui_menuset = 1,
 494                 ui_toolbar,
 495                 ui_toolbars,
 496                 ui_include,
 497                 ui_last
 498         };
 499
 500         struct keyword_item uitags[ui_last - 1] = {
 501                 { "include", ui_include },
 502                 { "menuset", ui_menuset },
 503                 { "toolbar", ui_toolbar },
 504                 { "toolbars", ui_toolbars }
 505         };
 506
 507         // Ensure that a file is read only once (prevents include loops)
 508         static std::list<string> uifiles;
 509         std::list<string>::const_iterator it  = uifiles.begin();
 510         std::list<string>::const_iterator end = uifiles.end();
 511         it = std::find(it, end, name);
 512         if (it != end) {
 513                 lyxerr[Debug::INIT] << "UI file '" << name
 514                                     << "' has been read already. "
 515                                     << "Is this an include loop?"
 516                                     << endl;
 517                 return;
 518         }
 519
 520         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 521
 522         string const ui_path = LibFileSearch("ui", name, "ui");
 523
 524         if (ui_path.empty()) {
 525                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 526                 showFileError(name);
 527                 return;
 528         }
 529         uifiles.push_back(name);
 530
 531         lyxerr[Debug::INIT] << "Found " << name
 532                             << " in " << ui_path << endl;
 533         LyXLex lex(uitags, ui_last - 1);
 534         lex.setFile(ui_path);
 535         if (!lex.isOK()) {
 536                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 537                        << endl;
 538         }
 539
 540         if (lyxerr.debugging(Debug::PARSER))
 541                 lex.printTable(lyxerr);
 542
 543         while (lex.isOK()) {
 544                 switch (lex.lex()) {
 545                 case ui_include: {
 546                         lex.next(true);
 547                         string const file = lex.getString();
 548                         readUIFile(file);
 549                         break;
 550                 }
 551                 case ui_menuset:
 552                         menubackend.read(lex);
 553                         break;
 554
 555                 case ui_toolbar:
 556                         toolbarbackend.read(lex);
 557                         break;
 558
 559                 case ui_toolbars:
 560                         toolbarbackend.readToolbars(lex);
 561                         break;
 562
 563                 default:
 564                         if (!rtrim(lex.getString()).empty())
 565                                 lex.printError("LyX::ReadUIFile: "
 566                                                "Unknown menu tag: `$$Token'");
 567                         break;
 568                 }
 569         }
 570 }
 571
 572
 573 // Read the languages file `name'
 574 void LyX::readLanguagesFile(string const & name)
 575 {
 576         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 577
 578         string const lang_path = LibFileSearch(string(), name);
 579         if (lang_path.empty()) {
 580                 showFileError(name);
 581                 return;
 582         }
 583         languages.read(lang_path);
 584 }
 585
 586
 587 // Read the encodings file `name'
 588 void LyX::readEncodingsFile(string const & name)
 589 {
 590         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 591
 592         string const enc_path = LibFileSearch(string(), name);
 593         if (enc_path.empty()) {
 594                 showFileError(name);
 595                 return;
 596         }
 597         encodings.read(enc_path);
 598 }
 599
 600
 601 namespace {
 602
 603 bool is_gui = true;
 604 string batch;
 605
 606 /// return the the number of arguments consumed
 607 typedef boost::function<int(string const &, string const &)> cmd_helper;
 608
 609 int parse_dbg(string const & arg, string const &)
 610 {
 611         if (arg.empty()) {
 612                 lyxerr << _("List of supported debug flags:") << endl;
 613                 Debug::showTags(lyxerr);
 614                 exit(0);
 615         }
 616         lyxerr << bformat(_("Setting debug level to %1$s"), arg) << endl;
 617
 618         lyxerr.level(Debug::value(arg));
 619         Debug::showLevel(lyxerr, lyxerr.level());
 620         return 1;
 621 }
 622
 623
 624 int parse_help(string const &, string const &)
 625 {
 626         lyxerr <<
 627                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 628                   "Command line switches (case sensitive):\n"
 629                   "\t-help              summarize LyX usage\n"
 630                   "\t-userdir dir       try to set user directory to dir\n"
 631                   "\t-sysdir dir        try to set system directory to dir\n"
 632                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 633                   "\t-dbg feature[,feature]...\n"
 634                   "                  select the features to debug.\n"
 635                   "                  Type `lyx -dbg' to see the list of features\n"
 636                   "\t-x [--execute] command\n"
 637                   "                  where command is a lyx command.\n"
 638                   "\t-e [--export] fmt\n"
 639                   "                  where fmt is the export format of choice.\n"
 640                   "\t-i [--import] fmt file.xxx\n"
 641                   "                  where fmt is the import format of choice\n"
 642                   "                  and file.xxx is the file to be imported.\n"
 643                   "\t-version        summarize version and build info\n"
 644                   "Check the LyX man page for more details.") << endl;
 645         exit(0);
 646         return 0;
 647 }
 648
 649 int parse_version(string const &, string const &)
 650 {
 651         lyxerr << "LyX " << lyx_version
 652                << " of " << lyx_release_date << endl;
 653         lyxerr << "Built on " << __DATE__ << ", " << __TIME__ << endl;
 654
 655         lyxerr << lyx_version_info << endl;
 656         exit(0);
 657         return 0;
 658 }
 659
 660 int parse_sysdir(string const & arg, string const &)
 661 {
 662         if (arg.empty()) {
 663                 lyxerr << _("Missing directory for -sysdir switch") << endl;
 664                 exit(1);
 665         }
 666         system_lyxdir(arg);
 667         return 1;
 668 }
 669
 670 int parse_userdir(string const & arg, string const &)
 671 {
 672         if (arg.empty()) {
 673                 lyxerr << _("Missing directory for -userdir switch") << endl;
 674                 exit(1);
 675         }
 676         user_lyxdir(arg);
 677         return 1;
 678 }
 679
 680 int parse_execute(string const & arg, string const &)
 681 {
 682         if (arg.empty()) {
 683                 lyxerr << _("Missing command string after --execute switch") << endl;
 684                 exit(1);
 685         }
 686         batch = arg;
 687         // Argh. Setting gui to false segfaults..
 688         // FIXME: when ? how ?
 689         // is_gui = false;
 690         return 1;
 691 }
 692
 693 int parse_export(string const & type, string const &)
 694 {
 695         if (type.empty()) {
 696                 lyxerr << _("Missing file type [eg latex, ps...] after "
 697                         "--export switch") << endl;
 698                 exit(1);
 699         }
 700         batch = "buffer-export " + type;
 701         is_gui = false;
 702         return 1;
 703 }
 704
 705 int parse_import(string const & type, string const & file)
 706 {
 707         if (type.empty()) {
 708                 lyxerr << _("Missing file type [eg latex, ps...] after "
 709                         "--import switch") << endl;
 710                 exit(1);
 711         }
 712         if (file.empty()) {
 713                 lyxerr << _("Missing filename for --import") << endl;
 714                 exit(1);
 715         }
 716
 717         batch = "buffer-import " + type + ' ' + file;
 718         return 2;
 719 }
 720
 721 } // namespace anon
 722
 723
 724 bool LyX::easyParse(int & argc, char * argv[])
 725 {
 726         std::map<string, cmd_helper> cmdmap;
 727
 728         cmdmap["-dbg"] = parse_dbg;
 729         cmdmap["-help"] = parse_help;
 730         cmdmap["--help"] = parse_help;
 731         cmdmap["-version"] = parse_version;
 732         cmdmap["--version"] = parse_version;
 733         cmdmap["-sysdir"] = parse_sysdir;
 734         cmdmap["-userdir"] = parse_userdir;
 735         cmdmap["-x"] = parse_execute;
 736         cmdmap["--execute"] = parse_execute;
 737         cmdmap["-e"] = parse_export;
 738         cmdmap["--export"] = parse_export;
 739         cmdmap["-i"] = parse_import;
 740         cmdmap["--import"] = parse_import;
 741
 742         for (int i = 1; i < argc; ++i) {
 743                 std::map<string, cmd_helper>::const_iterator it
 744                         = cmdmap.find(argv[i]);
 745
 746                 // don't complain if not found - may be parsed later
 747                 if (it == cmdmap.end())
 748                         continue;
 749
 750                 string arg((i + 1 < argc) ? argv[i + 1] : "");
 751                 string arg2((i + 2 < argc) ? argv[i + 2] : "");
 752
 753                 int const remove = 1 + it->second(arg, arg2);
 754
 755                 // Now, remove used arguments by shifting
 756                 // the following ones remove places down.
 757                 argc -= remove;
 758                 for (int j = i; j < argc; ++j)
 759                         argv[j] = argv[j + remove];
 760                 --i;
 761         }
 762
 763         batch_command = batch;
 764
 765         return is_gui;
 766 }