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
  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 DebugStream lyxerr;
  91
  92 boost::scoped_ptr<LastFiles> lastfiles;
  93
  94 // This is the global bufferlist object
  95 BufferList bufferlist;
  96
  97 // convenient to have it here.
  98 boost::scoped_ptr<kb_keymap> toplevel_keymap;
  99
 100 namespace {
 101
 102 void showFileError(string const & error)
 103 {
 104         Alert::warning(_("Could not read configuration file"),
 105                    bformat(_("Error while reading the configuration file\n%1$s.\n"
 106                      "Please check your installation."), error));
 107         exit(EXIT_FAILURE);
 108 }
 109
 110 }
 111
 112 LyX::LyX(int & argc, char * argv[])
 113 {
 114         // Here we need to parse the command line. At least
 115         // we need to parse for "-dbg" and "-help"
 116         bool const want_gui = easyParse(argc, argv);
 117
 118         // set the DisplayTranslator only once; should that be done here??
 119         // if this should not be in this file, please also remove
 120         // #include "graphics/GraphicsTypes.h" at the top -- Rob Lahaye.
 121         lyx::graphics::setDisplayTranslator();
 122
 123         if (want_gui)
 124                 lyx_gui::parse_init(argc, argv);
 125
 126         // check for any spurious extra arguments
 127         // other than documents
 128         for (int argi = 1; argi < argc ; ++argi) {
 129                 if (argv[argi][0] == '-') {
 130                         lyxerr << bformat(_("Wrong command line option `%1$s'. Exiting."),
 131                                 argv[argi]) << endl;
 132                         exit(1);
 133                 }
 134         }
 135
 136         // Initialization of LyX (reads lyxrc and more)
 137         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 138         init(want_gui);
 139         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 140
 141         if (want_gui)
 142                 lyx_gui::parse_lyxrc();
 143
 144         vector<string> files;
 145
 146         for (int argi = argc - 1; argi >= 1; --argi)
 147                 files.push_back(argv[argi]);
 148
 149         if (first_start)
 150                 files.push_back(i18nLibFileSearch("examples", "splash.lyx"));
 151
 152         // Execute batch commands if available
 153         if (!batch_command.empty()) {
 154
 155                 lyxerr[Debug::INIT] << "About to handle -x '"
 156                        << batch_command << '\'' << endl;
 157
 158                 Buffer * last_loaded = 0;
 159
 160                 vector<string>::const_iterator it = files.begin();
 161                 vector<string>::const_iterator end = files.end();
 162
 163                 for (; it != end; ++it) {
 164                         // get absolute path of file and add ".lyx" to
 165                         // the filename if necessary
 166                         string s = FileSearch(string(), *it, "lyx");
 167                         if (s.empty()) {
 168                                 last_loaded = newFile(*it, string(), true);
 169                         } else {
 170                                 Buffer * buf = bufferlist.newBuffer(s, false);
 171                                 buf->error.connect(boost::bind(&LyX::printError, this, _1));
 172                                 if (loadLyXFile(buf, s))
 173                                         last_loaded = buf;
 174                                 else
 175                                         bufferlist.release(buf);
 176                         }
 177                 }
 178
 179                 // try to dispatch to last loaded buffer first
 180                 if (last_loaded) {
 181                         bool success = false;
 182                         if (last_loaded->dispatch(batch_command, &success)) {
 183                                 QuitLyX();
 184                                 exit(!success);
 185                         }
 186                 }
 187                 files.clear(); // the files are already loaded
 188         }
 189
 190         lyx_gui::start(batch_command, files);
 191 }
 192
 193
 194 extern "C" {
 195
 196 static void error_handler(int err_sig)
 197 {
 198         switch (err_sig) {
 199         case SIGHUP:
 200                 lyxerr << "\nlyx: SIGHUP signal caught" << endl;
 201                 break;
 202         case SIGINT:
 203                 // no comments
 204                 break;
 205         case SIGFPE:
 206                 lyxerr << "\nlyx: SIGFPE signal caught" << endl;
 207                 break;
 208         case SIGSEGV:
 209                 lyxerr << "\nlyx: SIGSEGV signal caught" << endl;
 210                 lyxerr <<
 211                         "Sorry, you have found a bug in LyX. "
 212                         "Please read the bug-reporting instructions "
 213                         "in Help->Introduction and send us a bug report, "
 214                         "if necessary. Thanks !" << endl;
 215                 break;
 216         case SIGTERM:
 217                 // no comments
 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
 228         LyX::emergencyCleanup();
 229
 230         lyxerr << "Bye." << endl;
 231         if (err_sig!= SIGHUP &&
 232            (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
 233                 lyx::support::abort();
 234         exit(0);
 235 }
 236
 237 }
 238
 239
 240 void LyX::printError(ErrorItem const & ei)
 241 {
 242         std::cerr << _("LyX: ") << ei.error
 243                   << ':' << ei.description << std::endl;
 244
 245 }
 246
 247
 248 void LyX::init(bool gui)
 249 {
 250         signal(SIGHUP, error_handler);
 251         signal(SIGFPE, error_handler);
 252         signal(SIGSEGV, error_handler);
 253         signal(SIGINT, error_handler);
 254         signal(SIGTERM, error_handler);
 255
 256         bool const explicit_userdir = setLyxPaths();
 257
 258         // Check that user LyX directory is ok. We don't do that if
 259         // running in batch mode.
 260         if (gui) {
 261                 queryUserLyXDir(explicit_userdir);
 262         } else {
 263                 first_start = false;
 264         }
 265
 266         // Disable gui when easyparse says so
 267         lyx_gui::use_gui = gui;
 268
 269         if (lyxrc.template_path.empty()) {
 270                 lyxrc.template_path = AddPath(system_lyxdir(), "templates");
 271         }
 272
 273         if (lyxrc.lastfiles.empty()) {
 274                 lyxrc.lastfiles = AddName(user_lyxdir(), "lastfiles");
 275         }
 276
 277         if (lyxrc.roman_font_name.empty())
 278                 lyxrc.roman_font_name = lyx_gui::roman_font_name();
 279         if (lyxrc.sans_font_name.empty())
 280                 lyxrc.sans_font_name = lyx_gui::sans_font_name();
 281         if (lyxrc.typewriter_font_name.empty())
 282                 lyxrc.typewriter_font_name = lyx_gui::typewriter_font_name();
 283
 284         //
 285         // Read configuration files
 286         //
 287
 288         readRcFile("lyxrc.defaults");
 289         system_lyxrc = lyxrc;
 290         system_formats = formats;
 291         system_converters = converters;
 292         system_lcolor = lcolor;
 293
 294         string prefsfile = "preferences";
 295         // back compatibility to lyxs < 1.1.6
 296         if (LibFileSearch(string(), prefsfile).empty())
 297                 prefsfile = "lyxrc";
 298         if (!LibFileSearch(string(), prefsfile).empty())
 299                 readRcFile(prefsfile);
 300
 301         readEncodingsFile("encodings");
 302         readLanguagesFile("languages");
 303
 304         // Load the layouts
 305         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 306         LyXSetStyle();
 307
 308         if (gui) {
 309                 // Set up bindings
 310                 toplevel_keymap.reset(new kb_keymap);
 311                 defaultKeyBindings(toplevel_keymap.get());
 312                 toplevel_keymap->read(lyxrc.bind_file);
 313
 314                 // Read menus
 315                 readUIFile(lyxrc.ui_file);
 316         }
 317
 318         if (lyxerr.debugging(Debug::LYXRC))
 319                 lyxrc.print();
 320
 321         os::setTmpDir(CreateLyXTmpDir(lyxrc.tempdir_path));
 322         if (lyxerr.debugging(Debug::INIT)) {
 323                 lyxerr << "LyX tmp dir: `" << os::getTmpDir() << '\'' << endl;
 324         }
 325
 326         lyxerr[Debug::INIT] << "Reading lastfiles `"
 327                             << lyxrc.lastfiles << "'..." << endl;
 328         lastfiles.reset(new LastFiles(lyxrc.lastfiles,
 329                                       lyxrc.check_lastfiles,
 330                                       lyxrc.num_lastfiles));
 331 }
 332
 333
 334 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 335 {
 336         kbmap->bind("Right", LFUN_RIGHT);
 337         kbmap->bind("Left", LFUN_LEFT);
 338         kbmap->bind("Up", LFUN_UP);
 339         kbmap->bind("Down", LFUN_DOWN);
 340
 341         kbmap->bind("Tab", LFUN_CELL_FORWARD);
 342         kbmap->bind("ISO_Left_Tab", LFUN_CELL_FORWARD); // jbl 2001-23-02
 343
 344         kbmap->bind("Home", LFUN_HOME);
 345         kbmap->bind("End", LFUN_END);
 346         kbmap->bind("Prior", LFUN_PRIOR);
 347         kbmap->bind("Next", LFUN_NEXT);
 348
 349         kbmap->bind("Return", LFUN_BREAKPARAGRAPH);
 350         //kbmap->bind("~C-~S-~M-nobreakspace", LFUN_PROTECTEDSPACE);
 351
 352         kbmap->bind("Delete", LFUN_DELETE);
 353         kbmap->bind("BackSpace", LFUN_BACKSPACE);
 354
 355         // sub- and superscript -MV
 356         kbmap->bind("~S-underscore", LFUN_SUBSCRIPT);
 357         kbmap->bind("~S-asciicircum", LFUN_SUPERSCRIPT);
 358
 359         // kbmap->bindings to enable the use of the numeric keypad
 360         // e.g. Num Lock set
 361         //kbmap->bind("KP_0", LFUN_SELFINSERT);
 362         //kbmap->bind("KP_Decimal", LFUN_SELFINSERT);
 363         kbmap->bind("KP_Enter", LFUN_BREAKPARAGRAPH);
 364         //kbmap->bind("KP_1", LFUN_SELFINSERT);
 365         //kbmap->bind("KP_2", LFUN_SELFINSERT);
 366         //kbmap->bind("KP_3", LFUN_SELFINSERT);
 367         //kbmap->bind("KP_4", LFUN_SELFINSERT);
 368         //kbmap->bind("KP_5", LFUN_SELFINSERT);
 369         //kbmap->bind("KP_6", LFUN_SELFINSERT);
 370         //kbmap->bind("KP_Add", LFUN_SELFINSERT);
 371         //kbmap->bind("KP_7", LFUN_SELFINSERT);
 372         //kbmap->bind("KP_8", LFUN_SELFINSERT);
 373         //kbmap->bind("KP_9", LFUN_SELFINSERT);
 374         //kbmap->bind("KP_Divide", LFUN_SELFINSERT);
 375         //kbmap->bind("KP_Multiply", LFUN_SELFINSERT);
 376         //kbmap->bind("KP_Subtract", LFUN_SELFINSERT);
 377         kbmap->bind("KP_Right", LFUN_RIGHT);
 378         kbmap->bind("KP_Left", LFUN_LEFT);
 379         kbmap->bind("KP_Up", LFUN_UP);
 380         kbmap->bind("KP_Down", LFUN_DOWN);
 381         kbmap->bind("KP_Home", LFUN_HOME);
 382         kbmap->bind("KP_End", LFUN_END);
 383         kbmap->bind("KP_Prior", LFUN_PRIOR);
 384         kbmap->bind("KP_Next", LFUN_NEXT);
 385
 386         kbmap->bind("C-Tab", LFUN_CELL_SPLIT);  // ale970515
 387         kbmap->bind("S-Tab", LFUN_CELL_BACKWARD);  // jug20000522
 388         kbmap->bind("S-ISO_Left_Tab", LFUN_CELL_BACKWARD); // jbl 2001-23-02
 389 }
 390
 391
 392 void LyX::emergencyCleanup()
 393 {
 394         // what to do about tmpfiles is non-obvious. we would
 395         // like to delete any we find, but our lyxdir might
 396         // contain documents etc. which might be helpful on
 397         // a crash
 398
 399         bufferlist.emergencyWriteAll();
 400         if (lyxserver)
 401                 lyxserver->emergencyCleanup();
 402 }
 403
 404
 405 void LyX::deadKeyBindings(kb_keymap * kbmap)
 406 {
 407         // bindKeyings for transparent handling of deadkeys
 408         // The keysyms are gotten from XFree86 X11R6
 409         kbmap->bind("~C-~S-~M-dead_acute", LFUN_ACUTE);
 410         kbmap->bind("~C-~S-~M-dead_breve", LFUN_BREVE);
 411         kbmap->bind("~C-~S-~M-dead_caron", LFUN_CARON);
 412         kbmap->bind("~C-~S-~M-dead_cedilla", LFUN_CEDILLA);
 413         kbmap->bind("~C-~S-~M-dead_abovering", LFUN_CIRCLE);
 414         kbmap->bind("~C-~S-~M-dead_circumflex", LFUN_CIRCUMFLEX);
 415         kbmap->bind("~C-~S-~M-dead_abovedot", LFUN_DOT);
 416         kbmap->bind("~C-~S-~M-dead_grave", LFUN_GRAVE);
 417         kbmap->bind("~C-~S-~M-dead_doubleacute", LFUN_HUNG_UMLAUT);
 418         kbmap->bind("~C-~S-~M-dead_macron", LFUN_MACRON);
 419         // nothing with this name
 420         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 421         kbmap->bind("~C-~S-~M-dead_tilde", LFUN_TILDE);
 422         kbmap->bind("~C-~S-~M-dead_diaeresis", LFUN_UMLAUT);
 423         // nothing with this name either...
 424         //kbmap->bind("~C-~S-~M-dead_underbar", LFUN_UNDERBAR);
 425         kbmap->bind("~C-~S-~M-dead_belowdot", LFUN_UNDERDOT);
 426         kbmap->bind("~C-~S-~M-dead_tie", LFUN_TIE);
 427         kbmap->bind("~C-~S-~M-dead_ogonek", LFUN_OGONEK);
 428 }
 429
 430
 431 void LyX::queryUserLyXDir(bool explicit_userdir)
 432 {
 433         string const configure_script = AddName(system_lyxdir(), "configure");
 434
 435         // Does user directory exist?
 436         FileInfo fileInfo(user_lyxdir());
 437         if (fileInfo.isOK() && fileInfo.isDir()) {
 438                 first_start = false;
 439                 FileInfo script(configure_script);
 440                 FileInfo defaults(AddName(user_lyxdir(), "lyxrc.defaults"));
 441                 if (defaults.isOK() && script.isOK()
 442                     && defaults.getModificationTime() < script.getModificationTime()) {
 443                         lyxerr << _("LyX: reconfiguring user directory")
 444                                << endl;
 445                         Path p(user_lyxdir());
 446                         ::system(configure_script.c_str());
 447                         lyxerr << "LyX: " << _("Done!") << endl;
 448                 }
 449                 return;
 450         }
 451
 452         first_start = !explicit_userdir;
 453
 454         lyxerr << bformat(_("LyX: Creating directory %1$s"
 455                                   " and running configure..."), user_lyxdir()) << endl;
 456
 457         if (!createDirectory(user_lyxdir(), 0755)) {
 458                 // Failed, let's use $HOME instead.
 459                 user_lyxdir(GetEnvPath("HOME"));
 460                 lyxerr << bformat(_("Failed. Will use %1$s instead."),
 461                         user_lyxdir()) << endl;
 462                 return;
 463         }
 464
 465         // Run configure in user lyx directory
 466         Path p(user_lyxdir());
 467         ::system(configure_script.c_str());
 468         lyxerr << "LyX: " << _("Done!") << endl;
 469 }
 470
 471
 472 void LyX::readRcFile(string const & name)
 473 {
 474         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 475
 476         string const lyxrc_path = LibFileSearch(string(), name);
 477         if (!lyxrc_path.empty()) {
 478
 479                 lyxerr[Debug::INIT] << "Found " << name
 480                                     << " in " << lyxrc_path << endl;
 481
 482                 if (lyxrc.read(lyxrc_path) >= 0)
 483                         return;
 484         }
 485
 486         showFileError(name);
 487 }
 488
 489
 490 // Read the ui file `name'
 491 void LyX::readUIFile(string const & name)
 492 {
 493         enum Uitags {
 494                 ui_menuset = 1,
 495                 ui_toolbar,
 496                 ui_toolbars,
 497                 ui_include,
 498                 ui_last
 499         };
 500
 501         struct keyword_item uitags[ui_last - 1] = {
 502                 { "include", ui_include },
 503                 { "menuset", ui_menuset },
 504                 { "toolbar", ui_toolbar },
 505                 { "toolbars", ui_toolbars }
 506         };
 507
 508         // Ensure that a file is read only once (prevents include loops)
 509         static std::list<string> uifiles;
 510         std::list<string>::const_iterator it  = uifiles.begin();
 511         std::list<string>::const_iterator end = uifiles.end();
 512         it = std::find(it, end, name);
 513         if (it != end) {
 514                 lyxerr[Debug::INIT] << "UI file '" << name
 515                                     << "' has been read already. "
 516                                     << "Is this an include loop?"
 517                                     << endl;
 518                 return;
 519         }
 520
 521         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 522
 523         string const ui_path = LibFileSearch("ui", name, "ui");
 524
 525         if (ui_path.empty()) {
 526                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 527                 showFileError(name);
 528                 return;
 529         }
 530         uifiles.push_back(name);
 531
 532         lyxerr[Debug::INIT] << "Found " << name
 533                             << " in " << ui_path << endl;
 534         LyXLex lex(uitags, ui_last - 1);
 535         lex.setFile(ui_path);
 536         if (!lex.isOK()) {
 537                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 538                        << endl;
 539         }
 540
 541         if (lyxerr.debugging(Debug::PARSER))
 542                 lex.printTable(lyxerr);
 543
 544         while (lex.isOK()) {
 545                 switch (lex.lex()) {
 546                 case ui_include: {
 547                         lex.next(true);
 548                         string const file = lex.getString();
 549                         readUIFile(file);
 550                         break;
 551                 }
 552                 case ui_menuset:
 553                         menubackend.read(lex);
 554                         break;
 555
 556                 case ui_toolbar:
 557                         toolbarbackend.read(lex);
 558                         break;
 559
 560                 case ui_toolbars:
 561                         toolbarbackend.readToolbars(lex);
 562                         break;
 563
 564                 default:
 565                         if (!rtrim(lex.getString()).empty())
 566                                 lex.printError("LyX::ReadUIFile: "
 567                                                "Unknown menu tag: `$$Token'");
 568                         break;
 569                 }
 570         }
 571 }
 572
 573
 574 // Read the languages file `name'
 575 void LyX::readLanguagesFile(string const & name)
 576 {
 577         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 578
 579         string const lang_path = LibFileSearch(string(), name);
 580         if (lang_path.empty()) {
 581                 showFileError(name);
 582                 return;
 583         }
 584         languages.read(lang_path);
 585 }
 586
 587
 588 // Read the encodings file `name'
 589 void LyX::readEncodingsFile(string const & name)
 590 {
 591         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 592
 593         string const enc_path = LibFileSearch(string(), name);
 594         if (enc_path.empty()) {
 595                 showFileError(name);
 596                 return;
 597         }
 598         encodings.read(enc_path);
 599 }
 600
 601
 602 namespace {
 603
 604 bool is_gui = true;
 605 string batch;
 606
 607 /// return the the number of arguments consumed
 608 typedef boost::function<int(string const &, string const &)> cmd_helper;
 609
 610 int parse_dbg(string const & arg, string const &)
 611 {
 612         if (arg.empty()) {
 613                 lyxerr << _("List of supported debug flags:") << endl;
 614                 Debug::showTags(lyxerr);
 615                 exit(0);
 616         }
 617         lyxerr << bformat(_("Setting debug level to %1$s"), arg) << endl;
 618
 619         lyxerr.level(Debug::value(arg));
 620         Debug::showLevel(lyxerr, lyxerr.level());
 621         return 1;
 622 }
 623
 624
 625 int parse_help(string const &, string const &)
 626 {
 627         lyxerr <<
 628                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 629                   "Command line switches (case sensitive):\n"
 630                   "\t-help              summarize LyX usage\n"
 631                   "\t-userdir dir       try to set user directory to dir\n"
 632                   "\t-sysdir dir        try to set system directory to dir\n"
 633                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 634                   "\t-dbg feature[,feature]...\n"
 635                   "                  select the features to debug.\n"
 636                   "                  Type `lyx -dbg' to see the list of features\n"
 637                   "\t-x [--execute] command\n"
 638                   "                  where command is a lyx command.\n"
 639                   "\t-e [--export] fmt\n"
 640                   "                  where fmt is the export format of choice.\n"
 641                   "\t-i [--import] fmt file.xxx\n"
 642                   "                  where fmt is the import format of choice\n"
 643                   "                  and file.xxx is the file to be imported.\n"
 644                   "\t-version        summarize version and build info\n"
 645                   "Check the LyX man page for more details.") << endl;
 646         exit(0);
 647         return 0;
 648 }
 649
 650 int parse_version(string const &, string const &)
 651 {
 652         lyxerr << "LyX " << lyx_version
 653                << " of " << lyx_release_date << endl;
 654         lyxerr << "Built on " << __DATE__ << ", " << __TIME__ << endl;
 655
 656         lyxerr << lyx_version_info << endl;
 657         exit(0);
 658         return 0;
 659 }
 660
 661 int parse_sysdir(string const & arg, string const &)
 662 {
 663         if (arg.empty()) {
 664                 lyxerr << _("Missing directory for -sysdir switch") << endl;
 665                 exit(1);
 666         }
 667         system_lyxdir(arg);
 668         return 1;
 669 }
 670
 671 int parse_userdir(string const & arg, string const &)
 672 {
 673         if (arg.empty()) {
 674                 lyxerr << _("Missing directory for -userdir switch") << endl;
 675                 exit(1);
 676         }
 677         user_lyxdir(arg);
 678         return 1;
 679 }
 680
 681 int parse_execute(string const & arg, string const &)
 682 {
 683         if (arg.empty()) {
 684                 lyxerr << _("Missing command string after --execute switch") << endl;
 685                 exit(1);
 686         }
 687         batch = arg;
 688         // Argh. Setting gui to false segfaults..
 689         // FIXME: when ? how ?
 690         // is_gui = false;
 691         return 1;
 692 }
 693
 694 int parse_export(string const & type, string const &)
 695 {
 696         if (type.empty()) {
 697                 lyxerr << _("Missing file type [eg latex, ps...] after "
 698                         "--export switch") << endl;
 699                 exit(1);
 700         }
 701         batch = "buffer-export " + type;
 702         is_gui = false;
 703         return 1;
 704 }
 705
 706 int parse_import(string const & type, string const & file)
 707 {
 708         if (type.empty()) {
 709                 lyxerr << _("Missing file type [eg latex, ps...] after "
 710                         "--import switch") << endl;
 711                 exit(1);
 712         }
 713         if (file.empty()) {
 714                 lyxerr << _("Missing filename for --import") << endl;
 715                 exit(1);
 716         }
 717
 718         batch = "buffer-import " + type + ' ' + file;
 719         return 2;
 720 }
 721
 722 } // namespace anon
 723
 724
 725 bool LyX::easyParse(int & argc, char * argv[])
 726 {
 727         std::map<string, cmd_helper> cmdmap;
 728
 729         cmdmap["-dbg"] = parse_dbg;
 730         cmdmap["-help"] = parse_help;
 731         cmdmap["--help"] = parse_help;
 732         cmdmap["-version"] = parse_version;
 733         cmdmap["--version"] = parse_version;
 734         cmdmap["-sysdir"] = parse_sysdir;
 735         cmdmap["-userdir"] = parse_userdir;
 736         cmdmap["-x"] = parse_execute;
 737         cmdmap["--execute"] = parse_execute;
 738         cmdmap["-e"] = parse_export;
 739         cmdmap["--export"] = parse_export;
 740         cmdmap["-i"] = parse_import;
 741         cmdmap["--import"] = parse_import;
 742
 743         for (int i = 1; i < argc; ++i) {
 744                 std::map<string, cmd_helper>::const_iterator it
 745                         = cmdmap.find(argv[i]);
 746
 747                 // don't complain if not found - may be parsed later
 748                 if (it == cmdmap.end())
 749                         continue;
 750
 751                 string arg((i + 1 < argc) ? argv[i + 1] : "");
 752                 string arg2((i + 2 < argc) ? argv[i + 2] : "");
 753
 754                 int const remove = 1 + it->second(arg, arg2);
 755
 756                 // Now, remove used arguments by shifting
 757                 // the following ones remove places down.
 758                 argc -= remove;
 759                 for (int j = i; j < argc; ++j)
 760                         argv[j] = argv[j + remove];
 761                 --i;
 762         }
 763
 764         batch_command = batch;
 765
 766         return is_gui;
 767 }