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         case SIGPIPE:
 218                 // This will be received if lyx tries to write to a socket
 219                 // whose reading end was closed. It can safely be ignored,
 220                 // as in this case the ::write() system call will return -1
 221                 // and errno will be set to EPIPE
 222                 return;
 223                 //break;
 224         }
 225
 226         // Deinstall the signal handlers
 227         signal(SIGHUP, SIG_DFL);
 228         signal(SIGINT, SIG_DFL);
 229         signal(SIGFPE, SIG_DFL);
 230         signal(SIGSEGV, SIG_DFL);
 231         signal(SIGTERM, SIG_DFL);
 232         signal(SIGPIPE, SIG_DFL);
 233
 234         LyX::emergencyCleanup();
 235
 236         lyxerr << "Bye." << endl;
 237         if (err_sig!= SIGHUP &&
 238            (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
 239                 lyx::support::abort();
 240         exit(0);
 241 }
 242
 243 }
 244
 245
 246 void LyX::printError(ErrorItem const & ei)
 247 {
 248         std::cerr << _("LyX: ") << ei.error
 249                   << ':' << ei.description << std::endl;
 250
 251 }
 252
 253
 254 void LyX::init(bool gui)
 255 {
 256         signal(SIGHUP, error_handler);
 257         signal(SIGFPE, error_handler);
 258         signal(SIGSEGV, error_handler);
 259         signal(SIGINT, error_handler);
 260         signal(SIGTERM, error_handler);
 261         signal(SIGPIPE, error_handler);
 262
 263         bool const explicit_userdir = setLyxPaths();
 264
 265         // Check that user LyX directory is ok. We don't do that if
 266         // running in batch mode.
 267         if (gui) {
 268                 queryUserLyXDir(explicit_userdir);
 269         } else {
 270                 first_start = false;
 271         }
 272
 273         // Disable gui when easyparse says so
 274         lyx_gui::use_gui = gui;
 275
 276         if (lyxrc.template_path.empty()) {
 277                 lyxrc.template_path = AddPath(system_lyxdir(), "templates");
 278         }
 279
 280         if (lyxrc.lastfiles.empty()) {
 281                 lyxrc.lastfiles = AddName(user_lyxdir(), "lastfiles");
 282         }
 283
 284         if (lyxrc.roman_font_name.empty())
 285                 lyxrc.roman_font_name = lyx_gui::roman_font_name();
 286         if (lyxrc.sans_font_name.empty())
 287                 lyxrc.sans_font_name = lyx_gui::sans_font_name();
 288         if (lyxrc.typewriter_font_name.empty())
 289                 lyxrc.typewriter_font_name = lyx_gui::typewriter_font_name();
 290
 291         //
 292         // Read configuration files
 293         //
 294
 295         readRcFile("lyxrc.defaults");
 296         system_lyxrc = lyxrc;
 297         system_formats = formats;
 298         system_converters = converters;
 299         system_lcolor = lcolor;
 300
 301         string prefsfile = "preferences";
 302         // back compatibility to lyxs < 1.1.6
 303         if (LibFileSearch(string(), prefsfile).empty())
 304                 prefsfile = "lyxrc";
 305         if (!LibFileSearch(string(), prefsfile).empty())
 306                 readRcFile(prefsfile);
 307
 308         readEncodingsFile("encodings");
 309         readLanguagesFile("languages");
 310
 311         // Load the layouts
 312         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 313         LyXSetStyle();
 314
 315         if (gui) {
 316                 // Set up bindings
 317                 toplevel_keymap.reset(new kb_keymap);
 318                 defaultKeyBindings(toplevel_keymap.get());
 319                 toplevel_keymap->read(lyxrc.bind_file);
 320
 321                 // Read menus
 322                 readUIFile(lyxrc.ui_file);
 323         }
 324
 325         if (lyxerr.debugging(Debug::LYXRC))
 326                 lyxrc.print();
 327
 328         os::setTmpDir(CreateLyXTmpDir(lyxrc.tempdir_path));
 329         if (lyxerr.debugging(Debug::INIT)) {
 330                 lyxerr << "LyX tmp dir: `" << os::getTmpDir() << '\'' << endl;
 331         }
 332
 333         lyxerr[Debug::INIT] << "Reading lastfiles `"
 334                             << lyxrc.lastfiles << "'..." << endl;
 335         lastfiles.reset(new LastFiles(lyxrc.lastfiles,
 336                                       lyxrc.check_lastfiles,
 337                                       lyxrc.num_lastfiles));
 338 }
 339
 340
 341 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 342 {
 343         kbmap->bind("Right", FuncRequest(LFUN_RIGHT));
 344         kbmap->bind("Left", FuncRequest(LFUN_LEFT));
 345         kbmap->bind("Up", FuncRequest(LFUN_UP));
 346         kbmap->bind("Down", FuncRequest(LFUN_DOWN));
 347
 348         kbmap->bind("Tab", FuncRequest(LFUN_CELL_FORWARD));
 349         kbmap->bind("ISO_Left_Tab", FuncRequest(LFUN_CELL_FORWARD));
 350
 351         kbmap->bind("Home", FuncRequest(LFUN_HOME));
 352         kbmap->bind("End", FuncRequest(LFUN_END));
 353         kbmap->bind("Prior", FuncRequest(LFUN_PRIOR));
 354         kbmap->bind("Next", FuncRequest(LFUN_NEXT));
 355
 356         kbmap->bind("Return", FuncRequest(LFUN_BREAKPARAGRAPH));
 357         //kbmap->bind("~C-~S-~M-nobreakspace", FuncRequest(LFUN_PROTECTEDSPACE));
 358
 359         kbmap->bind("Delete", FuncRequest(LFUN_DELETE));
 360         kbmap->bind("BackSpace", FuncRequest(LFUN_BACKSPACE));
 361
 362         // sub- and superscript -MV
 363         kbmap->bind("~S-underscore", FuncRequest(LFUN_SUBSCRIPT));
 364         kbmap->bind("~S-asciicircum", FuncRequest(LFUN_SUPERSCRIPT));
 365
 366         // kbmap->bindings to enable the use of the numeric keypad
 367         // e.g. Num Lock set
 368         //kbmap->bind("KP_0", FuncRequest(LFUN_SELFINSERT));
 369         //kbmap->bind("KP_Decimal", FuncRequest(LFUN_SELFINSERT));
 370         kbmap->bind("KP_Enter", FuncRequest(LFUN_BREAKPARAGRAPH));
 371         //kbmap->bind("KP_1", FuncRequest(LFUN_SELFINSERT));
 372         //kbmap->bind("KP_2", FuncRequest(LFUN_SELFINSERT));
 373         //kbmap->bind("KP_3", FuncRequest(LFUN_SELFINSERT));
 374         //kbmap->bind("KP_4", FuncRequest(LFUN_SELFINSERT));
 375         //kbmap->bind("KP_5", FuncRequest(LFUN_SELFINSERT));
 376         //kbmap->bind("KP_6", FuncRequest(LFUN_SELFINSERT));
 377         //kbmap->bind("KP_Add", FuncRequest(LFUN_SELFINSERT));
 378         //kbmap->bind("KP_7", FuncRequest(LFUN_SELFINSERT));
 379         //kbmap->bind("KP_8", FuncRequest(LFUN_SELFINSERT));
 380         //kbmap->bind("KP_9", FuncRequest(LFUN_SELFINSERT));
 381         //kbmap->bind("KP_Divide", FuncRequest(LFUN_SELFINSERT));
 382         //kbmap->bind("KP_Multiply", FuncRequest(LFUN_SELFINSERT));
 383         //kbmap->bind("KP_Subtract", FuncRequest(LFUN_SELFINSERT));
 384         kbmap->bind("KP_Right", FuncRequest(LFUN_RIGHT));
 385         kbmap->bind("KP_Left", FuncRequest(LFUN_LEFT));
 386         kbmap->bind("KP_Up", FuncRequest(LFUN_UP));
 387         kbmap->bind("KP_Down", FuncRequest(LFUN_DOWN));
 388         kbmap->bind("KP_Home", FuncRequest(LFUN_HOME));
 389         kbmap->bind("KP_End", FuncRequest(LFUN_END));
 390         kbmap->bind("KP_Prior", FuncRequest(LFUN_PRIOR));
 391         kbmap->bind("KP_Next", FuncRequest(LFUN_NEXT));
 392
 393         kbmap->bind("C-Tab", FuncRequest(LFUN_CELL_SPLIT));
 394         kbmap->bind("S-Tab", FuncRequest(LFUN_CELL_BACKWARD));
 395         kbmap->bind("S-ISO_Left_Tab", FuncRequest(LFUN_CELL_BACKWARD));
 396 }
 397
 398
 399 void LyX::emergencyCleanup()
 400 {
 401         // what to do about tmpfiles is non-obvious. we would
 402         // like to delete any we find, but our lyxdir might
 403         // contain documents etc. which might be helpful on
 404         // a crash
 405
 406         bufferlist.emergencyWriteAll();
 407         if (lyxserver)
 408                 lyxserver->emergencyCleanup();
 409 }
 410
 411
 412 void LyX::deadKeyBindings(kb_keymap * kbmap)
 413 {
 414         // bindKeyings for transparent handling of deadkeys
 415         // The keysyms are gotten from XFree86 X11R6
 416         kbmap->bind("~C-~S-~M-dead_acute", FuncRequest(LFUN_ACUTE));
 417         kbmap->bind("~C-~S-~M-dead_breve", FuncRequest(LFUN_BREVE));
 418         kbmap->bind("~C-~S-~M-dead_caron", FuncRequest(LFUN_CARON));
 419         kbmap->bind("~C-~S-~M-dead_cedilla", FuncRequest(LFUN_CEDILLA));
 420         kbmap->bind("~C-~S-~M-dead_abovering", FuncRequest(LFUN_CIRCLE));
 421         kbmap->bind("~C-~S-~M-dead_circumflex", FuncRequest(LFUN_CIRCUMFLEX));
 422         kbmap->bind("~C-~S-~M-dead_abovedot", FuncRequest(LFUN_DOT));
 423         kbmap->bind("~C-~S-~M-dead_grave", FuncRequest(LFUN_GRAVE));
 424         kbmap->bind("~C-~S-~M-dead_doubleacute", FuncRequest(LFUN_HUNG_UMLAUT));
 425         kbmap->bind("~C-~S-~M-dead_macron", FuncRequest(LFUN_MACRON));
 426         // nothing with this name
 427         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 428         kbmap->bind("~C-~S-~M-dead_tilde", FuncRequest(LFUN_TILDE));
 429         kbmap->bind("~C-~S-~M-dead_diaeresis", FuncRequest(LFUN_UMLAUT));
 430         // nothing with this name either...
 431         //kbmap->bind("~C-~S-~M-dead_underbar", FuncRequest(LFUN_UNDERBAR));
 432         kbmap->bind("~C-~S-~M-dead_belowdot", FuncRequest(LFUN_UNDERDOT));
 433         kbmap->bind("~C-~S-~M-dead_tie", FuncRequest(LFUN_TIE));
 434         kbmap->bind("~C-~S-~M-dead_ogonek",FuncRequest(LFUN_OGONEK));
 435 }
 436
 437
 438 void LyX::queryUserLyXDir(bool explicit_userdir)
 439 {
 440         string const configure_script = AddName(system_lyxdir(), "configure");
 441
 442         // Does user directory exist?
 443         FileInfo fileInfo(user_lyxdir());
 444         if (fileInfo.isOK() && fileInfo.isDir()) {
 445                 first_start = false;
 446                 FileInfo script(configure_script);
 447                 FileInfo defaults(AddName(user_lyxdir(), "lyxrc.defaults"));
 448                 if (defaults.isOK() && script.isOK()
 449                     && defaults.getModificationTime() < script.getModificationTime()) {
 450                         lyxerr << _("LyX: reconfiguring user directory")
 451                                << endl;
 452                         Path p(user_lyxdir());
 453                         ::system(configure_script.c_str());
 454                         lyxerr << "LyX: " << _("Done!") << endl;
 455                 }
 456                 return;
 457         }
 458
 459         first_start = !explicit_userdir;
 460
 461         lyxerr << bformat(_("LyX: Creating directory %1$s"
 462                                   " and running configure..."), user_lyxdir()) << endl;
 463
 464         if (!createDirectory(user_lyxdir(), 0755)) {
 465                 // Failed, let's use $HOME instead.
 466                 user_lyxdir(GetEnvPath("HOME"));
 467                 lyxerr << bformat(_("Failed. Will use %1$s instead."),
 468                         user_lyxdir()) << endl;
 469                 return;
 470         }
 471
 472         // Run configure in user lyx directory
 473         Path p(user_lyxdir());
 474         ::system(configure_script.c_str());
 475         lyxerr << "LyX: " << _("Done!") << endl;
 476 }
 477
 478
 479 void LyX::readRcFile(string const & name)
 480 {
 481         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 482
 483         string const lyxrc_path = LibFileSearch(string(), name);
 484         if (!lyxrc_path.empty()) {
 485
 486                 lyxerr[Debug::INIT] << "Found " << name
 487                                     << " in " << lyxrc_path << endl;
 488
 489                 if (lyxrc.read(lyxrc_path) >= 0)
 490                         return;
 491         }
 492
 493         showFileError(name);
 494 }
 495
 496
 497 // Read the ui file `name'
 498 void LyX::readUIFile(string const & name)
 499 {
 500         enum Uitags {
 501                 ui_menuset = 1,
 502                 ui_toolbar,
 503                 ui_toolbars,
 504                 ui_include,
 505                 ui_last
 506         };
 507
 508         struct keyword_item uitags[ui_last - 1] = {
 509                 { "include", ui_include },
 510                 { "menuset", ui_menuset },
 511                 { "toolbar", ui_toolbar },
 512                 { "toolbars", ui_toolbars }
 513         };
 514
 515         // Ensure that a file is read only once (prevents include loops)
 516         static std::list<string> uifiles;
 517         std::list<string>::const_iterator it  = uifiles.begin();
 518         std::list<string>::const_iterator end = uifiles.end();
 519         it = std::find(it, end, name);
 520         if (it != end) {
 521                 lyxerr[Debug::INIT] << "UI file '" << name
 522                                     << "' has been read already. "
 523                                     << "Is this an include loop?"
 524                                     << endl;
 525                 return;
 526         }
 527
 528         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 529
 530         string const ui_path = LibFileSearch("ui", name, "ui");
 531
 532         if (ui_path.empty()) {
 533                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 534                 showFileError(name);
 535                 return;
 536         }
 537         uifiles.push_back(name);
 538
 539         lyxerr[Debug::INIT] << "Found " << name
 540                             << " in " << ui_path << endl;
 541         LyXLex lex(uitags, ui_last - 1);
 542         lex.setFile(ui_path);
 543         if (!lex.isOK()) {
 544                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 545                        << endl;
 546         }
 547
 548         if (lyxerr.debugging(Debug::PARSER))
 549                 lex.printTable(lyxerr);
 550
 551         while (lex.isOK()) {
 552                 switch (lex.lex()) {
 553                 case ui_include: {
 554                         lex.next(true);
 555                         string const file = lex.getString();
 556                         readUIFile(file);
 557                         break;
 558                 }
 559                 case ui_menuset:
 560                         menubackend.read(lex);
 561                         break;
 562
 563                 case ui_toolbar:
 564                         toolbarbackend.read(lex);
 565                         break;
 566
 567                 case ui_toolbars:
 568                         toolbarbackend.readToolbars(lex);
 569                         break;
 570
 571                 default:
 572                         if (!rtrim(lex.getString()).empty())
 573                                 lex.printError("LyX::ReadUIFile: "
 574                                                "Unknown menu tag: `$$Token'");
 575                         break;
 576                 }
 577         }
 578 }
 579
 580
 581 // Read the languages file `name'
 582 void LyX::readLanguagesFile(string const & name)
 583 {
 584         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 585
 586         string const lang_path = LibFileSearch(string(), name);
 587         if (lang_path.empty()) {
 588                 showFileError(name);
 589                 return;
 590         }
 591         languages.read(lang_path);
 592 }
 593
 594
 595 // Read the encodings file `name'
 596 void LyX::readEncodingsFile(string const & name)
 597 {
 598         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 599
 600         string const enc_path = LibFileSearch(string(), name);
 601         if (enc_path.empty()) {
 602                 showFileError(name);
 603                 return;
 604         }
 605         encodings.read(enc_path);
 606 }
 607
 608
 609 namespace {
 610
 611 bool is_gui = true;
 612 string batch;
 613
 614 /// return the the number of arguments consumed
 615 typedef boost::function<int(string const &, string const &)> cmd_helper;
 616
 617 int parse_dbg(string const & arg, string const &)
 618 {
 619         if (arg.empty()) {
 620                 lyxerr << _("List of supported debug flags:") << endl;
 621                 Debug::showTags(lyxerr);
 622                 exit(0);
 623         }
 624         lyxerr << bformat(_("Setting debug level to %1$s"), arg) << endl;
 625
 626         lyxerr.level(Debug::value(arg));
 627         Debug::showLevel(lyxerr, lyxerr.level());
 628         return 1;
 629 }
 630
 631
 632 int parse_help(string const &, string const &)
 633 {
 634         lyxerr <<
 635                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 636                   "Command line switches (case sensitive):\n"
 637                   "\t-help              summarize LyX usage\n"
 638                   "\t-userdir dir       try to set user directory to dir\n"
 639                   "\t-sysdir dir        try to set system directory to dir\n"
 640                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 641                   "\t-dbg feature[,feature]...\n"
 642                   "                  select the features to debug.\n"
 643                   "                  Type `lyx -dbg' to see the list of features\n"
 644                   "\t-x [--execute] command\n"
 645                   "                  where command is a lyx command.\n"
 646                   "\t-e [--export] fmt\n"
 647                   "                  where fmt is the export format of choice.\n"
 648                   "\t-i [--import] fmt file.xxx\n"
 649                   "                  where fmt is the import format of choice\n"
 650                   "                  and file.xxx is the file to be imported.\n"
 651                   "\t-version        summarize version and build info\n"
 652                   "Check the LyX man page for more details.") << endl;
 653         exit(0);
 654         return 0;
 655 }
 656
 657 int parse_version(string const &, string const &)
 658 {
 659         lyxerr << "LyX " << lyx_version
 660                << " of " << lyx_release_date << endl;
 661         lyxerr << "Built on " << __DATE__ << ", " << __TIME__ << endl;
 662
 663         lyxerr << lyx_version_info << endl;
 664         exit(0);
 665         return 0;
 666 }
 667
 668 int parse_sysdir(string const & arg, string const &)
 669 {
 670         if (arg.empty()) {
 671                 lyxerr << _("Missing directory for -sysdir switch") << endl;
 672                 exit(1);
 673         }
 674         system_lyxdir(arg);
 675         return 1;
 676 }
 677
 678 int parse_userdir(string const & arg, string const &)
 679 {
 680         if (arg.empty()) {
 681                 lyxerr << _("Missing directory for -userdir switch") << endl;
 682                 exit(1);
 683         }
 684         user_lyxdir(arg);
 685         return 1;
 686 }
 687
 688 int parse_execute(string const & arg, string const &)
 689 {
 690         if (arg.empty()) {
 691                 lyxerr << _("Missing command string after --execute switch") << endl;
 692                 exit(1);
 693         }
 694         batch = arg;
 695         // Argh. Setting gui to false segfaults..
 696         // FIXME: when ? how ?
 697         // is_gui = false;
 698         return 1;
 699 }
 700
 701 int parse_export(string const & type, string const &)
 702 {
 703         if (type.empty()) {
 704                 lyxerr << _("Missing file type [eg latex, ps...] after "
 705                         "--export switch") << endl;
 706                 exit(1);
 707         }
 708         batch = "buffer-export " + type;
 709         is_gui = false;
 710         return 1;
 711 }
 712
 713 int parse_import(string const & type, string const & file)
 714 {
 715         if (type.empty()) {
 716                 lyxerr << _("Missing file type [eg latex, ps...] after "
 717                         "--import switch") << endl;
 718                 exit(1);
 719         }
 720         if (file.empty()) {
 721                 lyxerr << _("Missing filename for --import") << endl;
 722                 exit(1);
 723         }
 724
 725         batch = "buffer-import " + type + ' ' + file;
 726         return 2;
 727 }
 728
 729 } // namespace anon
 730
 731
 732 bool LyX::easyParse(int & argc, char * argv[])
 733 {
 734         std::map<string, cmd_helper> cmdmap;
 735
 736         cmdmap["-dbg"] = parse_dbg;
 737         cmdmap["-help"] = parse_help;
 738         cmdmap["--help"] = parse_help;
 739         cmdmap["-version"] = parse_version;
 740         cmdmap["--version"] = parse_version;
 741         cmdmap["-sysdir"] = parse_sysdir;
 742         cmdmap["-userdir"] = parse_userdir;
 743         cmdmap["-x"] = parse_execute;
 744         cmdmap["--execute"] = parse_execute;
 745         cmdmap["-e"] = parse_export;
 746         cmdmap["--export"] = parse_export;
 747         cmdmap["-i"] = parse_import;
 748         cmdmap["--import"] = parse_import;
 749
 750         for (int i = 1; i < argc; ++i) {
 751                 std::map<string, cmd_helper>::const_iterator it
 752                         = cmdmap.find(argv[i]);
 753
 754                 // don't complain if not found - may be parsed later
 755                 if (it == cmdmap.end())
 756                         continue;
 757
 758                 string arg((i + 1 < argc) ? argv[i + 1] : "");
 759                 string arg2((i + 2 < argc) ? argv[i + 2] : "");
 760
 761                 int const remove = 1 + it->second(arg, arg2);
 762
 763                 // Now, remove used arguments by shifting
 764                 // the following ones remove places down.
 765                 argc -= remove;
 766                 for (int j = i; j < argc; ++j)
 767                         argv[j] = argv[j + remove];
 768                 --i;
 769         }
 770
 771         batch_command = batch;
 772
 773         return is_gui;
 774 }