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