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