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