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 "format.h"
  27 #include "gettext.h"
  28 #include "kbmap.h"
  29 #include "language.h"
  30 #include "lastfiles.h"
  31 #include "lyxfunc.h"
  32 #include "lyxlex.h"
  33 #include "lyxtextclasslist.h"
  34 #include "lyxserver.h"
  35 #include "MenuBackend.h"
  36 #include "ToolbarBackend.h"
  37
  38 #include "frontends/Alert.h"
  39 #include "frontends/lyx_gui.h"
  40
  41 #include "graphics/GraphicsTypes.h"
  42
  43 #include "support/FileInfo.h"
  44 #include "support/filetools.h"
  45 #include "support/lyxlib.h"
  46 #include "support/os.h"
  47 #include "support/path.h"
  48 #include "support/path_defines.h"
  49
  50 #include <boost/function.hpp>
  51 #include <boost/bind.hpp>
  52 #include <boost/signals/signal1.hpp>
  53
  54 #include <cstdlib>
  55 #include <csignal>
  56 #include <iostream>
  57
  58 using namespace lyx::support;
  59
  60 using std::vector;
  61 using std::endl;
  62
  63 #ifndef CXX_GLOBAL_CSTD
  64 using std::exit;
  65 using std::signal;
  66 using std::system;
  67 #endif
  68
  69 extern void QuitLyX();
  70
  71 extern LyXServer * lyxserver;
  72
  73 DebugStream lyxerr;
  74
  75 boost::scoped_ptr<LastFiles> lastfiles;
  76
  77 // This is the global bufferlist object
  78 BufferList bufferlist;
  79
  80 // convenient to have it here.
  81 boost::scoped_ptr<kb_keymap> toplevel_keymap;
  82
  83 namespace {
  84
  85 void showFileError(string const & error)
  86 {
  87         Alert::warning(_("Could not read configuration file"),
  88                    bformat(_("Error while reading the configuration file\n%1$s.\n"
  89                      "Please check your installation."), error));
  90         exit(EXIT_FAILURE);
  91 }
  92
  93 }
  94
  95 LyX::LyX(int & argc, char * argv[])
  96 {
  97         // Here we need to parse the command line. At least
  98         // we need to parse for "-dbg" and "-help"
  99         bool const want_gui = easyParse(argc, argv);
 100
 101         // set the DisplayTranslator only once; should that be done here??
 102         // if this should not be in this file, please also remove
 103         // #include "graphics/GraphicsTypes.h" at the top -- Rob Lahaye.
 104         lyx::graphics::setDisplayTranslator();
 105
 106         if (want_gui)
 107                 lyx_gui::parse_init(argc, argv);
 108
 109         // check for any spurious extra arguments
 110         // other than documents
 111         for (int argi = 1; argi < argc ; ++argi) {
 112                 if (argv[argi][0] == '-') {
 113                         lyxerr << bformat(_("Wrong command line option `%1$s'. Exiting."),
 114                                 argv[argi]) << endl;
 115                         exit(1);
 116                 }
 117         }
 118
 119         // Initialization of LyX (reads lyxrc and more)
 120         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
 121         init(want_gui);
 122         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
 123
 124         if (want_gui)
 125                 lyx_gui::parse_lyxrc();
 126
 127         vector<string> files;
 128
 129         for (int argi = argc - 1; argi >= 1; --argi)
 130                 files.push_back(argv[argi]);
 131
 132         if (first_start)
 133                 files.push_back(i18nLibFileSearch("examples", "splash.lyx"));
 134
 135         // Execute batch commands if available
 136         if (!batch_command.empty()) {
 137
 138                 lyxerr[Debug::INIT] << "About to handle -x '"
 139                        << batch_command << '\'' << endl;
 140
 141                 Buffer * last_loaded = 0;
 142
 143                 vector<string>::const_iterator it = files.begin();
 144                 vector<string>::const_iterator end = files.end();
 145
 146                 for (; it != end; ++it) {
 147                         // get absolute path of file and add ".lyx" to
 148                         // the filename if necessary
 149                         string s = FileSearch(string(), *it, "lyx");
 150                         if (s.empty()) {
 151                                 last_loaded = newFile(*it, string(), true);
 152                         } else {
 153                                 Buffer * buf = bufferlist.newBuffer(s, false);
 154                                 buf->error.connect(boost::bind(&LyX::printError, this, _1));
 155                                 if (loadLyXFile(buf, s))
 156                                         last_loaded = buf;
 157                                 else
 158                                         bufferlist.release(buf);
 159                         }
 160                 }
 161
 162                 // try to dispatch to last loaded buffer first
 163                 if (last_loaded) {
 164                         bool success = false;
 165                         if (last_loaded->dispatch(batch_command, &success)) {
 166                                 QuitLyX();
 167                                 exit(!success);
 168                         }
 169                 }
 170                 files.clear(); // the files are already loaded
 171         }
 172
 173         lyx_gui::start(batch_command, files);
 174 }
 175
 176
 177 extern "C" {
 178
 179 static void error_handler(int err_sig)
 180 {
 181         switch (err_sig) {
 182         case SIGHUP:
 183                 lyxerr << "\nlyx: SIGHUP signal caught" << endl;
 184                 break;
 185         case SIGINT:
 186                 // no comments
 187                 break;
 188         case SIGFPE:
 189                 lyxerr << "\nlyx: SIGFPE signal caught" << endl;
 190                 break;
 191         case SIGSEGV:
 192                 lyxerr << "\nlyx: SIGSEGV signal caught" << endl;
 193                 lyxerr <<
 194                         "Sorry, you have found a bug in LyX. "
 195                         "Please read the bug-reporting instructions "
 196                         "in Help->Introduction and send us a bug report, "
 197                         "if necessary. Thanks !" << endl;
 198                 break;
 199         case SIGTERM:
 200                 // no comments
 201                 break;
 202         }
 203
 204         // Deinstall the signal handlers
 205         signal(SIGHUP, SIG_DFL);
 206         signal(SIGINT, SIG_DFL);
 207         signal(SIGFPE, SIG_DFL);
 208         signal(SIGSEGV, SIG_DFL);
 209         signal(SIGTERM, SIG_DFL);
 210
 211         LyX::emergencyCleanup();
 212
 213         lyxerr << "Bye." << endl;
 214         if (err_sig!= SIGHUP &&
 215            (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
 216                 lyx::support::abort();
 217         exit(0);
 218 }
 219
 220 }
 221
 222
 223 void LyX::printError(ErrorItem const & ei)
 224 {
 225         std::cerr << _("LyX: ") << ei.error
 226                   << ':' << ei.description << std::endl;
 227
 228 }
 229
 230
 231 void LyX::init(bool gui)
 232 {
 233         signal(SIGHUP, error_handler);
 234         signal(SIGFPE, error_handler);
 235         signal(SIGSEGV, error_handler);
 236         signal(SIGINT, error_handler);
 237         signal(SIGTERM, error_handler);
 238
 239         bool const explicit_userdir = setLyxPaths();
 240
 241         // Check that user LyX directory is ok. We don't do that if
 242         // running in batch mode.
 243         if (gui) {
 244                 queryUserLyXDir(explicit_userdir);
 245         } else {
 246                 first_start = false;
 247         }
 248
 249         // Disable gui when easyparse says so
 250         lyx_gui::use_gui = gui;
 251
 252         if (lyxrc.template_path.empty()) {
 253                 lyxrc.template_path = AddPath(system_lyxdir(), "templates");
 254         }
 255
 256         if (lyxrc.lastfiles.empty()) {
 257                 lyxrc.lastfiles = AddName(user_lyxdir(), "lastfiles");
 258         }
 259
 260         if (lyxrc.roman_font_name.empty())
 261                 lyxrc.roman_font_name = lyx_gui::roman_font_name();
 262         if (lyxrc.sans_font_name.empty())
 263                 lyxrc.sans_font_name = lyx_gui::sans_font_name();
 264         if (lyxrc.typewriter_font_name.empty())
 265                 lyxrc.typewriter_font_name = lyx_gui::typewriter_font_name();
 266
 267         //
 268         // Read configuration files
 269         //
 270
 271         readRcFile("lyxrc.defaults");
 272         system_lyxrc = lyxrc;
 273         system_formats = formats;
 274         system_converters = converters;
 275         system_lcolor = lcolor;
 276
 277         string prefsfile = "preferences";
 278         // back compatibility to lyxs < 1.1.6
 279         if (LibFileSearch(string(), prefsfile).empty())
 280                 prefsfile = "lyxrc";
 281         if (!LibFileSearch(string(), prefsfile).empty())
 282                 readRcFile(prefsfile);
 283
 284         readEncodingsFile("encodings");
 285         readLanguagesFile("languages");
 286
 287         // Load the layouts
 288         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 289         LyXSetStyle();
 290
 291         if (gui) {
 292                 // Set up bindings
 293                 toplevel_keymap.reset(new kb_keymap);
 294                 defaultKeyBindings(toplevel_keymap.get());
 295                 toplevel_keymap->read(lyxrc.bind_file);
 296
 297                 // Read menus
 298                 readUIFile(lyxrc.ui_file);
 299         }
 300
 301         if (lyxerr.debugging(Debug::LYXRC))
 302                 lyxrc.print();
 303
 304         os::setTmpDir(CreateLyXTmpDir(lyxrc.tempdir_path));
 305         if (lyxerr.debugging(Debug::INIT)) {
 306                 lyxerr << "LyX tmp dir: `" << os::getTmpDir() << '\'' << endl;
 307         }
 308
 309         lyxerr[Debug::INIT] << "Reading lastfiles `"
 310                             << lyxrc.lastfiles << "'..." << endl;
 311         lastfiles.reset(new LastFiles(lyxrc.lastfiles,
 312                                       lyxrc.check_lastfiles,
 313                                       lyxrc.num_lastfiles));
 314 }
 315
 316
 317 void LyX::defaultKeyBindings(kb_keymap  * kbmap)
 318 {
 319         kbmap->bind("Right", LFUN_RIGHT);
 320         kbmap->bind("Left", LFUN_LEFT);
 321         kbmap->bind("Up", LFUN_UP);
 322         kbmap->bind("Down", LFUN_DOWN);
 323
 324         kbmap->bind("Tab", LFUN_CELL_FORWARD);
 325         kbmap->bind("ISO_Left_Tab", LFUN_CELL_FORWARD); // jbl 2001-23-02
 326
 327         kbmap->bind("Home", LFUN_HOME);
 328         kbmap->bind("End", LFUN_END);
 329         kbmap->bind("Prior", LFUN_PRIOR);
 330         kbmap->bind("Next", LFUN_NEXT);
 331
 332         kbmap->bind("Return", LFUN_BREAKPARAGRAPH);
 333         //kbmap->bind("~C-~S-~M-nobreakspace", LFUN_PROTECTEDSPACE);
 334
 335         kbmap->bind("Delete", LFUN_DELETE);
 336         kbmap->bind("BackSpace", LFUN_BACKSPACE);
 337
 338         // sub- and superscript -MV
 339         kbmap->bind("~S-underscore", LFUN_SUBSCRIPT);
 340         kbmap->bind("~S-asciicircum", LFUN_SUPERSCRIPT);
 341
 342         // kbmap->bindings to enable the use of the numeric keypad
 343         // e.g. Num Lock set
 344         //kbmap->bind("KP_0", LFUN_SELFINSERT);
 345         //kbmap->bind("KP_Decimal", LFUN_SELFINSERT);
 346         kbmap->bind("KP_Enter", LFUN_BREAKPARAGRAPH);
 347         //kbmap->bind("KP_1", LFUN_SELFINSERT);
 348         //kbmap->bind("KP_2", LFUN_SELFINSERT);
 349         //kbmap->bind("KP_3", LFUN_SELFINSERT);
 350         //kbmap->bind("KP_4", LFUN_SELFINSERT);
 351         //kbmap->bind("KP_5", LFUN_SELFINSERT);
 352         //kbmap->bind("KP_6", LFUN_SELFINSERT);
 353         //kbmap->bind("KP_Add", LFUN_SELFINSERT);
 354         //kbmap->bind("KP_7", LFUN_SELFINSERT);
 355         //kbmap->bind("KP_8", LFUN_SELFINSERT);
 356         //kbmap->bind("KP_9", LFUN_SELFINSERT);
 357         //kbmap->bind("KP_Divide", LFUN_SELFINSERT);
 358         //kbmap->bind("KP_Multiply", LFUN_SELFINSERT);
 359         //kbmap->bind("KP_Subtract", LFUN_SELFINSERT);
 360         kbmap->bind("KP_Right", LFUN_RIGHT);
 361         kbmap->bind("KP_Left", LFUN_LEFT);
 362         kbmap->bind("KP_Up", LFUN_UP);
 363         kbmap->bind("KP_Down", LFUN_DOWN);
 364         kbmap->bind("KP_Home", LFUN_HOME);
 365         kbmap->bind("KP_End", LFUN_END);
 366         kbmap->bind("KP_Prior", LFUN_PRIOR);
 367         kbmap->bind("KP_Next", LFUN_NEXT);
 368
 369         kbmap->bind("C-Tab", LFUN_CELL_SPLIT);  // ale970515
 370         kbmap->bind("S-Tab", LFUN_CELL_BACKWARD);  // jug20000522
 371         kbmap->bind("S-ISO_Left_Tab", LFUN_CELL_BACKWARD); // jbl 2001-23-02
 372 }
 373
 374
 375 void LyX::emergencyCleanup()
 376 {
 377         // what to do about tmpfiles is non-obvious. we would
 378         // like to delete any we find, but our lyxdir might
 379         // contain documents etc. which might be helpful on
 380         // a crash
 381
 382         bufferlist.emergencyWriteAll();
 383         if (lyxserver)
 384                 lyxserver->emergencyCleanup();
 385 }
 386
 387
 388 void LyX::deadKeyBindings(kb_keymap * kbmap)
 389 {
 390         // bindKeyings for transparent handling of deadkeys
 391         // The keysyms are gotten from XFree86 X11R6
 392         kbmap->bind("~C-~S-~M-dead_acute", LFUN_ACUTE);
 393         kbmap->bind("~C-~S-~M-dead_breve", LFUN_BREVE);
 394         kbmap->bind("~C-~S-~M-dead_caron", LFUN_CARON);
 395         kbmap->bind("~C-~S-~M-dead_cedilla", LFUN_CEDILLA);
 396         kbmap->bind("~C-~S-~M-dead_abovering", LFUN_CIRCLE);
 397         kbmap->bind("~C-~S-~M-dead_circumflex", LFUN_CIRCUMFLEX);
 398         kbmap->bind("~C-~S-~M-dead_abovedot", LFUN_DOT);
 399         kbmap->bind("~C-~S-~M-dead_grave", LFUN_GRAVE);
 400         kbmap->bind("~C-~S-~M-dead_doubleacute", LFUN_HUNG_UMLAUT);
 401         kbmap->bind("~C-~S-~M-dead_macron", LFUN_MACRON);
 402         // nothing with this name
 403         // kbmap->bind("~C-~S-~M-dead_special_caron", LFUN_SPECIAL_CARON);
 404         kbmap->bind("~C-~S-~M-dead_tilde", LFUN_TILDE);
 405         kbmap->bind("~C-~S-~M-dead_diaeresis", LFUN_UMLAUT);
 406         // nothing with this name either...
 407         //kbmap->bind("~C-~S-~M-dead_underbar", LFUN_UNDERBAR);
 408         kbmap->bind("~C-~S-~M-dead_belowdot", LFUN_UNDERDOT);
 409         kbmap->bind("~C-~S-~M-dead_tie", LFUN_TIE);
 410         kbmap->bind("~C-~S-~M-dead_ogonek", LFUN_OGONEK);
 411 }
 412
 413
 414 void LyX::queryUserLyXDir(bool explicit_userdir)
 415 {
 416         string const configure_script = AddName(system_lyxdir(), "configure");
 417
 418         // Does user directory exist?
 419         FileInfo fileInfo(user_lyxdir());
 420         if (fileInfo.isOK() && fileInfo.isDir()) {
 421                 first_start = false;
 422                 FileInfo script(configure_script);
 423                 FileInfo defaults(AddName(user_lyxdir(), "lyxrc.defaults"));
 424                 if (defaults.isOK() && script.isOK()
 425                     && defaults.getModificationTime() < script.getModificationTime()) {
 426                         lyxerr << _("LyX: reconfiguring user directory")
 427                                << endl;
 428                         Path p(user_lyxdir());
 429                         ::system(configure_script.c_str());
 430                         lyxerr << "LyX: " << _("Done!") << endl;
 431                 }
 432                 return;
 433         }
 434
 435         first_start = !explicit_userdir;
 436
 437         lyxerr << bformat(_("LyX: Creating directory %1$s"
 438                                   " and running configure..."), user_lyxdir()) << endl;
 439
 440         if (!createDirectory(user_lyxdir(), 0755)) {
 441                 // Failed, let's use $HOME instead.
 442                 user_lyxdir(GetEnvPath("HOME"));
 443                 lyxerr << bformat(_("Failed. Will use %1$s instead."),
 444                         user_lyxdir()) << endl;
 445                 return;
 446         }
 447
 448         // Run configure in user lyx directory
 449         Path p(user_lyxdir());
 450         ::system(configure_script.c_str());
 451         lyxerr << "LyX: " << _("Done!") << endl;
 452 }
 453
 454
 455 void LyX::readRcFile(string const & name)
 456 {
 457         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 458
 459         string const lyxrc_path = LibFileSearch(string(), name);
 460         if (!lyxrc_path.empty()) {
 461
 462                 lyxerr[Debug::INIT] << "Found " << name
 463                                     << " in " << lyxrc_path << endl;
 464
 465                 if (lyxrc.read(lyxrc_path) >= 0)
 466                         return;
 467         }
 468
 469         showFileError(name);
 470 }
 471
 472
 473 // Read the ui file `name'
 474 void LyX::readUIFile(string const & name)
 475 {
 476         enum Uitags {
 477                 ui_menuset = 1,
 478                 ui_toolbar,
 479                 ui_toolbars,
 480                 ui_include,
 481                 ui_last
 482         };
 483
 484         struct keyword_item uitags[ui_last - 1] = {
 485                 { "include", ui_include },
 486                 { "menuset", ui_menuset },
 487                 { "toolbar", ui_toolbar },
 488                 { "toolbars", ui_toolbars }
 489         };
 490
 491         // Ensure that a file is read only once (prevents include loops)
 492         static std::list<string> uifiles;
 493         std::list<string>::const_iterator it  = uifiles.begin();
 494         std::list<string>::const_iterator end = uifiles.end();
 495         it = std::find(it, end, name);
 496         if (it != end) {
 497                 lyxerr[Debug::INIT] << "UI file '" << name
 498                                     << "' has been read already. "
 499                                     << "Is this an include loop?"
 500                                     << endl;
 501                 return;
 502         }
 503
 504         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 505
 506         string const ui_path = LibFileSearch("ui", name, "ui");
 507
 508         if (ui_path.empty()) {
 509                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 510                 showFileError(name);
 511                 return;
 512         }
 513         uifiles.push_back(name);
 514
 515         lyxerr[Debug::INIT] << "Found " << name
 516                             << " in " << ui_path << endl;
 517         LyXLex lex(uitags, ui_last - 1);
 518         lex.setFile(ui_path);
 519         if (!lex.isOK()) {
 520                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
 521                        << endl;
 522         }
 523
 524         if (lyxerr.debugging(Debug::PARSER))
 525                 lex.printTable(lyxerr);
 526
 527         while (lex.isOK()) {
 528                 switch (lex.lex()) {
 529                 case ui_include: {
 530                         lex.next(true);
 531                         string const file = lex.getString();
 532                         readUIFile(file);
 533                         break;
 534                 }
 535                 case ui_menuset:
 536                         menubackend.read(lex);
 537                         break;
 538
 539                 case ui_toolbar:
 540                         toolbarbackend.read(lex);
 541                         break;
 542
 543                 case ui_toolbars:
 544                         toolbarbackend.readToolbars(lex);
 545                         break;
 546
 547                 default:
 548                         if (!rtrim(lex.getString()).empty())
 549                                 lex.printError("LyX::ReadUIFile: "
 550                                                "Unknown menu tag: `$$Token'");
 551                         break;
 552                 }
 553         }
 554 }
 555
 556
 557 // Read the languages file `name'
 558 void LyX::readLanguagesFile(string const & name)
 559 {
 560         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 561
 562         string const lang_path = LibFileSearch(string(), name);
 563         if (lang_path.empty()) {
 564                 showFileError(name);
 565                 return;
 566         }
 567         languages.read(lang_path);
 568 }
 569
 570
 571 // Read the encodings file `name'
 572 void LyX::readEncodingsFile(string const & name)
 573 {
 574         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 575
 576         string const enc_path = LibFileSearch(string(), name);
 577         if (enc_path.empty()) {
 578                 showFileError(name);
 579                 return;
 580         }
 581         encodings.read(enc_path);
 582 }
 583
 584
 585 namespace {
 586
 587 bool is_gui = true;
 588 string batch;
 589
 590 /// return the the number of arguments consumed
 591 typedef boost::function<int(string const &, string const &)> cmd_helper;
 592
 593 int parse_dbg(string const & arg, string const &)
 594 {
 595         if (arg.empty()) {
 596                 lyxerr << _("List of supported debug flags:") << endl;
 597                 Debug::showTags(lyxerr);
 598                 exit(0);
 599         }
 600         lyxerr << bformat(_("Setting debug level to %1$s"), arg) << endl;
 601
 602         lyxerr.level(Debug::value(arg));
 603         Debug::showLevel(lyxerr, lyxerr.level());
 604         return 1;
 605 }
 606
 607
 608 int parse_help(string const &, string const &)
 609 {
 610         lyxerr <<
 611                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 612                   "Command line switches (case sensitive):\n"
 613                   "\t-help              summarize LyX usage\n"
 614                   "\t-userdir dir       try to set user directory to dir\n"
 615                   "\t-sysdir dir        try to set system directory to dir\n"
 616                   "\t-geometry WxH+X+Y  set geometry of the main window\n"
 617                   "\t-dbg feature[,feature]...\n"
 618                   "                  select the features to debug.\n"
 619                   "                  Type `lyx -dbg' to see the list of features\n"
 620                   "\t-x [--execute] command\n"
 621                   "                  where command is a lyx command.\n"
 622                   "\t-e [--export] fmt\n"
 623                   "                  where fmt is the export format of choice.\n"
 624                   "\t-i [--import] fmt file.xxx\n"
 625                   "                  where fmt is the import format of choice\n"
 626                   "                  and file.xxx is the file to be imported.\n"
 627                   "\t-version        summarize version and build info\n"
 628                   "Check the LyX man page for more details.") << endl;
 629         exit(0);
 630         return 0;
 631 }
 632
 633 int parse_version(string const &, string const &)
 634 {
 635         lyxerr << "LyX " << lyx_version
 636                << " of " << lyx_release_date << endl;
 637         lyxerr << "Built on " << __DATE__ << ", " << __TIME__ << endl;
 638
 639         lyxerr << lyx_version_info << endl;
 640         exit(0);
 641         return 0;
 642 }
 643
 644 int parse_sysdir(string const & arg, string const &)
 645 {
 646         if (arg.empty()) {
 647                 lyxerr << _("Missing directory for -sysdir switch") << endl;
 648                 exit(1);
 649         }
 650         system_lyxdir(arg);
 651         return 1;
 652 }
 653
 654 int parse_userdir(string const & arg, string const &)
 655 {
 656         if (arg.empty()) {
 657                 lyxerr << _("Missing directory for -userdir switch") << endl;
 658                 exit(1);
 659         }
 660         user_lyxdir(arg);
 661         return 1;
 662 }
 663
 664 int parse_execute(string const & arg, string const &)
 665 {
 666         if (arg.empty()) {
 667                 lyxerr << _("Missing command string after --execute switch") << endl;
 668                 exit(1);
 669         }
 670         batch = arg;
 671         // Argh. Setting gui to false segfaults..
 672         // FIXME: when ? how ?
 673         // is_gui = false;
 674         return 1;
 675 }
 676
 677 int parse_export(string const & type, string const &)
 678 {
 679         if (type.empty()) {
 680                 lyxerr << _("Missing file type [eg latex, ps...] after "
 681                         "--export switch") << endl;
 682                 exit(1);
 683         }
 684         batch = "buffer-export " + type;
 685         is_gui = false;
 686         return 1;
 687 }
 688
 689 int parse_import(string const & type, string const & file)
 690 {
 691         if (type.empty()) {
 692                 lyxerr << _("Missing file type [eg latex, ps...] after "
 693                         "--import switch") << endl;
 694                 exit(1);
 695         }
 696         if (file.empty()) {
 697                 lyxerr << _("Missing filename for --import") << endl;
 698                 exit(1);
 699         }
 700
 701         batch = "buffer-import " + type + ' ' + file;
 702         return 2;
 703 }
 704
 705 } // namespace anon
 706
 707
 708 bool LyX::easyParse(int & argc, char * argv[])
 709 {
 710         std::map<string, cmd_helper> cmdmap;
 711
 712         cmdmap["-dbg"] = parse_dbg;
 713         cmdmap["-help"] = parse_help;
 714         cmdmap["--help"] = parse_help;
 715         cmdmap["-version"] = parse_version;
 716         cmdmap["--version"] = parse_version;
 717         cmdmap["-sysdir"] = parse_sysdir;
 718         cmdmap["-userdir"] = parse_userdir;
 719         cmdmap["-x"] = parse_execute;
 720         cmdmap["--execute"] = parse_execute;
 721         cmdmap["-e"] = parse_export;
 722         cmdmap["--export"] = parse_export;
 723         cmdmap["-i"] = parse_import;
 724         cmdmap["--import"] = parse_import;
 725
 726         for (int i = 1; i < argc; ++i) {
 727                 std::map<string, cmd_helper>::const_iterator it
 728                         = cmdmap.find(argv[i]);
 729
 730                 // don't complain if not found - may be parsed later
 731                 if (it == cmdmap.end())
 732                         continue;
 733
 734                 string arg((i + 1 < argc) ? argv[i + 1] : "");
 735                 string arg2((i + 2 < argc) ? argv[i + 2] : "");
 736
 737                 int const remove = 1 + it->second(arg, arg2);
 738
 739                 // Now, remove used arguments by shifting
 740                 // the following ones remove places down.
 741                 argc -= remove;
 742                 for (int j = i; j < argc; ++j)
 743                         argv[j] = argv[j + remove];
 744                 --i;
 745         }
 746
 747         batch_command = batch;
 748
 749         return is_gui;
 750 }