src/lyx_main.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-1999 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #include <cstdlib>
  14 #include <csignal>
  15
  16 #include "version.h"
  17 #include "lyx_main.h"
  18 #include "lyx_gui.h"
  19 #include "lyx_gui_misc.h"
  20 #include "lyxrc.h"
  21 #include "support/path.h"
  22 #include "support/filetools.h"
  23 #include "bufferlist.h"
  24 #include "debug.h"
  25 #include "support/FileInfo.h"
  26 #include "lastfiles.h"
  27 #include "intl.h"
  28 #include "lyxserver.h"
  29 #include "layout.h"
  30 #include "gettext.h"
  31
  32 extern void LoadLyXFile(string const &);
  33
  34 string system_lyxdir;
  35 string build_lyxdir;
  36 string system_tempdir;
  37 string user_lyxdir;     // Default $HOME/.lyx
  38
  39 // Should this be kept global? Asger says Yes.
  40 DebugStream lyxerr;
  41
  42 LastFiles * lastfiles;
  43 LyXRC * lyxrc;
  44
  45 // This is the global bufferlist object
  46 BufferList bufferlist;
  47
  48 LyXServer * lyxserver = 0;
  49 // this should be static, but I need it in buffer.C
  50 bool finished = false;  // flag, that we are quitting the program
  51
  52 // convenient to have it here.
  53 kb_keymap * toplevel_keymap;
  54
  55
  56 LyX::LyX(int * argc, char * argv[])
  57 {
  58         // Prevent crash with --help
  59         lyxGUI = 0;
  60         lastfiles = 0;
  61
  62         // Here we need to parse the command line. At least
  63         // we need to parse for "-dbg" and "-help"
  64         bool gui = easyParse(argc, argv);
  65
  66         // Global bindings (this must be done as early as possible.) (Lgb)
  67         toplevel_keymap = new kb_keymap;
  68
  69         lyxerr[Debug::INIT] << "Initializing lyxrc" << endl;
  70         lyxrc = new LyXRC;
  71
  72         // Make the GUI object, and let it take care of the
  73         // command line arguments that concerns it.
  74         lyxerr[Debug::INIT] << "Initializing LyXGUI..." << endl;
  75         lyxGUI = new LyXGUI(this, argc, argv, gui);
  76         lyxerr[Debug::INIT] << "Initializing LyXGUI...done" << endl;
  77
  78         // Initialization of LyX (reads lyxrc and more)
  79         lyxerr[Debug::INIT] << "Initializing LyX::init..." << endl;
  80         init(argc, argv);
  81         lyxerr[Debug::INIT] << "Initializing LyX::init...done" << endl;
  82
  83         lyxGUI->init();
  84
  85         // Load the files specified in the command line.
  86         // Now the GUI and LyX have taken care of their arguments, so
  87         // the only thing left on the command line should be
  88         // filenames.
  89         if ((*argc) == 2)
  90                 lyxerr[Debug::INFO] << "Opening document..." << endl;
  91         else if ((*argc)>2)
  92                 lyxerr[Debug::INFO] << "Opening documents..." << endl;
  93
  94         Buffer * last_loaded = 0;
  95
  96         for (int argi = (*argc) - 1; argi >= 1; --argi) {
  97                 Buffer * loadb = bufferlist.loadLyXFile(argv[argi]);
  98                 if (loadb != 0) {
  99                         last_loaded = loadb;
 100                 }
 101         }
 102
 103         if (first_start) {
 104                 string splash = i18nLibFileSearch("examples", "splash.lyx");
 105                 lyxerr.debug() << "Opening splash document "
 106                                << splash << "..." << endl;
 107                 Buffer * loadb = bufferlist.loadLyXFile(splash);
 108                 if (loadb != 0) {
 109                         last_loaded = loadb;
 110                 }
 111         }
 112
 113         if (last_loaded != 0) {
 114                 lyxerr.debug() << "Yes we loaded some files." << endl;
 115                 lyxGUI->regBuf(last_loaded);
 116         }
 117
 118         // Execute batch commands if available
 119         if (!batch_command.empty() && last_loaded) {
 120                 lyxerr << "About to handle -x '" << batch_command << "'" << endl;
 121                 //Buffer buffer("Script Buffer");
 122                 //buffer.Dispatch(batch_command);
 123                 last_loaded->Dispatch(batch_command);
 124                 lyxerr << "We are done!" << endl;
 125                 return; // Maybe we could do something more clever than aborting..
 126         }
 127
 128         // Let the ball begin...
 129         lyxGUI->runTime();
 130 }
 131
 132
 133 // A destructor is always necessary  (asierra-970604)
 134 LyX::~LyX()
 135 {
 136         if (lastfiles) // DEL LINE
 137                 delete lastfiles;
 138
 139         if (lyxGUI) // DEL LINE
 140                 delete lyxGUI;
 141 }
 142
 143
 144 extern "C" void error_handler(int err_sig);
 145
 146 void LyX::init(int */*argc*/, char **argv)
 147 {
 148         // Install the signal handlers
 149         signal(SIGHUP, error_handler);
 150         signal(SIGFPE, error_handler);
 151         signal(SIGSEGV, error_handler);
 152         signal(SIGINT, error_handler);
 153         signal(SIGTERM, error_handler);
 154
 155         //
 156         // Determine path of binary
 157         //
 158
 159         string fullbinpath;
 160         string binpath = subst(argv[0], '\\', '/');
 161         string binname = OnlyFilename(argv[0]);
 162         // Sorry for system specific code. (SMiyata)
 163         if (suffixIs(binname, ".exe"))
 164                 binname.erase(binname.length()-4, string::npos);
 165
 166         binpath = ExpandPath(binpath); // This expands ./ and ~/
 167
 168         if (!AbsolutePath(binpath)) {
 169                 string binsearchpath = GetEnvPath("PATH");
 170                 // This will make "src/lyx" work always :-)
 171                 binsearchpath += ";.";
 172                 binpath = FileOpenSearch(binsearchpath, argv[0]);
 173         }
 174
 175         fullbinpath = binpath;
 176         binpath = MakeAbsPath(OnlyPath(binpath));
 177
 178         // In case we are running in place and compiled with shared libraries
 179         if (suffixIs(binpath, "/.libs/"))
 180                 binpath.erase(binpath.length()-6, string::npos);
 181
 182         if (binpath.empty()) {
 183                 lyxerr << _("Warning: could not determine path of binary.")
 184                        << "\n"
 185                        << _("If you have problems, try starting LyX with an absolute path.")
 186                        << endl;
 187         }
 188         lyxerr[Debug::INIT] << "Path of binary: " << binpath << endl;
 189
 190         //
 191         // Determine system directory.
 192         //
 193
 194         // Directories are searched in this order:
 195         // 1) -sysdir command line parameter
 196         // 2) LYX_DIR_11x environment variable
 197         // 3) Maybe <path of binary>/TOP_SRCDIR/lib
 198         // 4) <path of binary>/../share/<name of binary>/
 199         // 4a) repeat 4 after following the Symlink if <path of
 200         //     binary> is a symbolic link.
 201         // 5) hardcoded lyx_dir
 202         // The directory is checked for the presence of the file
 203         // "chkconfig.ltx", and if that is present, the directory
 204         // is accepted as the system directory.
 205         // If no chkconfig.ltx file is found, a warning is given,
 206         // and the hardcoded lyx_dir is used.
 207
 208         // If we had a command line switch, system_lyxdir is already set
 209         string searchpath;
 210         if (!system_lyxdir.empty())
 211                 searchpath= MakeAbsPath(system_lyxdir) + ';';
 212
 213         // LYX_DIR_11x environment variable
 214         string lyxdir = GetEnvPath("LYX_DIR_11x");
 215
 216         if (!lyxdir.empty()) {
 217                 lyxerr[Debug::INIT] << "LYX_DIR_11x: " << lyxdir << endl;
 218                 searchpath += lyxdir + ';';
 219         }
 220
 221         // <path of binary>/TOP_SRCDIR/lib
 222         build_lyxdir = MakeAbsPath("../lib", binpath);
 223         if (!FileSearch(build_lyxdir, "lyxrc.defaults").empty()) {
 224                 searchpath += MakeAbsPath(AddPath(TOP_SRCDIR, "lib"),
 225                                           binpath) + ';';
 226                 lyxerr[Debug::INIT] << "Checking whether LyX is run in "
 227                         "place... yes" << endl;
 228         } else {
 229                 lyxerr[Debug::INIT]
 230                         << "Checking whether LyX is run in place... no"
 231                         << endl;
 232                 build_lyxdir.clear();
 233         }
 234
 235         bool FollowLink;
 236         do {
 237           // Path of binary/../share/name of binary/
 238                 searchpath += NormalizePath(AddPath(binpath, "../share/") +
 239                       OnlyFilename(binname)) + ';';
 240
 241           // Follow Symlinks
 242                 FileInfo file(fullbinpath, true);
 243                 FollowLink = file.isLink();
 244                 if (FollowLink) {
 245                         string Link;
 246                         if (LyXReadLink(fullbinpath, Link)) {
 247                                 fullbinpath = Link;
 248                                 binpath = MakeAbsPath(OnlyPath(fullbinpath));
 249                         }
 250                         else {
 251                                 FollowLink = false;
 252                         }
 253                 }
 254         } while (FollowLink);
 255
 256         // Hardcoded dir
 257         searchpath += LYX_DIR;
 258
 259         // If debugging, show complete search path
 260         lyxerr[Debug::INIT] << "System directory search path: "
 261                             << searchpath << endl;
 262
 263         string const filename = "chkconfig.ltx";
 264         string temp = FileOpenSearch(searchpath, filename, string());
 265         system_lyxdir = OnlyPath(temp);
 266
 267         // Reduce "path/../path" stuff out of system directory
 268         system_lyxdir = NormalizePath(system_lyxdir);
 269
 270         bool path_shown = false;
 271
 272         // Warn if environment variable is set, but unusable
 273         if (!lyxdir.empty()) {
 274                 if (system_lyxdir != NormalizePath(lyxdir)) {
 275                         lyxerr <<_("LYX_DIR_11x environment variable no good.")
 276                                << '\n'
 277                                << _("System directory set to: ")
 278                                << system_lyxdir << endl;
 279                         path_shown = true;
 280                 }
 281         }
 282
 283         // Warn the user if we couldn't find "chkconfig.ltx"
 284         if (system_lyxdir == "./") {
 285                 lyxerr <<_("LyX Warning! Couldn't determine system directory.")
 286                        <<_("Try the '-sysdir' command line parameter or")
 287                        <<_("set the environment variable LYX_DIR_11x to the "
 288                            "LyX system directory")
 289                        << _("containing the file `chkconfig.ltx'.") << endl;
 290                 if (!path_shown)
 291                         lyxerr << _("Using built-in default ")
 292                                << LYX_DIR << _(" but expect problems.")
 293                                << endl;
 294                 else
 295                         lyxerr << _("Expect problems.") << endl;
 296                 system_lyxdir = LYX_DIR;
 297                 path_shown = true;
 298         }
 299
 300         // Report the system directory if debugging is on
 301         if (!path_shown)
 302                 lyxerr[Debug::INIT] << "System directory: '"
 303                                     << system_lyxdir << '\'' << endl;
 304
 305         //
 306         // Determine user lyx-dir
 307         //
 308
 309         user_lyxdir = AddPath(GetEnvPath("HOME"), string(".") + PACKAGE);
 310         lyxerr[Debug::INIT] << "User LyX directory: '"
 311                             <<  user_lyxdir << '\'' << endl;
 312
 313         // Check that user LyX directory is ok.
 314         queryUserLyXDir();
 315
 316         //
 317         // Load the layouts first
 318         //
 319
 320         lyxerr[Debug::INIT] << "Reading layouts..." << endl;
 321         LyXSetStyle();
 322
 323         //
 324         // Shine up lyxrc defaults
 325         //
 326
 327         // Default template path: system_dir/templates
 328         if (lyxrc->template_path.empty()){
 329                 lyxrc->template_path = AddPath(system_lyxdir, "templates");
 330         }
 331
 332         // Default lastfiles file: $HOME/.lyx/lastfiles
 333         if (lyxrc->lastfiles.empty()){
 334                 lyxrc->lastfiles = AddName(user_lyxdir, "lastfiles");
 335         }
 336
 337         // Calculate screen dpi as average of x-DPI and y-DPI:
 338         Screen * scr = DefaultScreenOfDisplay(fl_get_display());
 339         lyxrc->dpi = ((HeightOfScreen(scr)* 25.4 / HeightMMOfScreen(scr)) +
 340                       (WidthOfScreen(scr)* 25.4 / WidthMMOfScreen(scr))) / 2;
 341         lyxerr[Debug::INFO] << "DPI setting detected to be "
 342                        << lyxrc->dpi + 0.5 << endl;
 343
 344         //
 345         // Read configuration files
 346         //
 347
 348         ReadRcFile("lyxrc.defaults");
 349         ReadRcFile("lyxrc");
 350
 351         // Ensure that we have really read a bind file, so that LyX is
 352         // usable.
 353         if (!lyxrc->hasBindFile)
 354                 lyxrc->ReadBindFile();
 355
 356         if (lyxerr.debugging(Debug::LYXRC)) {
 357                 lyxrc->print();
 358         }
 359
 360         // Create temp directory
 361         system_tempdir = CreateLyXTmpDir(lyxrc->tempdir_path);
 362         if (lyxerr.debugging(Debug::INIT)) {
 363                 lyxerr << "LyX tmp dir: `" << system_tempdir << '\'' << endl;
 364         }
 365
 366         // load the lastfiles mini-database
 367         lyxerr[Debug::INIT] << "Reading lastfiles `"
 368                             << lyxrc->lastfiles << "'..." << endl;
 369         lastfiles = new LastFiles(lyxrc->lastfiles,
 370                                   lyxrc->check_lastfiles,
 371                                   lyxrc->num_lastfiles);
 372
 373         // start up the lyxserver. (is this a bit early?) (Lgb)
 374         // 0.12 this will be way to early, we need the GUI to be initialized
 375         // first, so move it for now.
 376         // lyxserver = new LyXServer;
 377 }
 378
 379
 380 // This one is not allowed to use anything on the main form, since that
 381 // one does not exist yet. (Asger)
 382 void LyX::queryUserLyXDir()
 383 {
 384         // Does user directory exist?
 385         FileInfo fileInfo(user_lyxdir);
 386         if (fileInfo.isOK() && fileInfo.isDir()) {
 387                 first_start = false;
 388                 return;
 389         } else {
 390                 first_start = true;
 391         }
 392
 393         // Nope
 394         if (!AskQuestion(_("You don't have a personal LyX directory."),
 395                          _("It is needed to keep your own configuration."),
 396                          _("Should I try to set it up for you (recommended)?"))) {
 397                 lyxerr << _("Running without personal LyX directory.") << endl;
 398                 // No, let's use $HOME instead.
 399                 user_lyxdir = GetEnvPath("HOME");
 400                 return;
 401         }
 402
 403         // Tell the user what is going on
 404         lyxerr << _("LyX: Creating directory ") << user_lyxdir
 405                << _(" and running configure...") << endl;
 406
 407         // Create directory structure
 408         if (!createDirectory(user_lyxdir, 0755)) {
 409                 // Failed, let's use $HOME instead.
 410                 user_lyxdir = GetEnvPath("HOME");
 411                 lyxerr << _("Failed. Will use ") << user_lyxdir
 412                        << _(" instead.") << endl;
 413                 return;
 414         }
 415
 416         // Run configure in user lyx directory
 417         Path p(user_lyxdir);
 418         system(AddName(system_lyxdir, "configure").c_str());
 419         lyxerr << "LyX: " << _("Done!") << endl;
 420 }
 421
 422
 423 // Read the rc file `name'
 424 void LyX::ReadRcFile(string const & name)
 425 {
 426         lyxerr[Debug::INIT] << "About to read " << name << "..." << endl;
 427
 428         string lyxrc_path = LibFileSearch(string(), name);
 429         if (!lyxrc_path.empty()){
 430                 lyxerr[Debug::INIT] << "Found " << name
 431                                     << " in " << lyxrc_path << endl;
 432                 if (lyxrc->read(lyxrc_path) < 0) {
 433                         WriteAlert(_("LyX Warning!"),
 434                                    _("Error while reading ")+lyxrc_path+".",
 435                                    _("Using built-in defaults."));
 436                 }
 437         } else
 438                 lyxerr[Debug::INIT] << "Could not find " << name << endl;
 439 }
 440
 441
 442 // Set debugging level and report result to user
 443 void setDebuggingLevel(string const & dbgLevel)
 444 {
 445         lyxerr << _("Setting debug level to ") <<  dbgLevel << endl;
 446         lyxerr.level(Debug::value(dbgLevel));
 447         Debug::showLevel(lyxerr, lyxerr.level());
 448 }
 449
 450
 451 // Give command line help
 452 void commandLineHelp()
 453 {
 454         lyxerr << "LyX " LYX_VERSION << " of " LYX_RELEASE << endl;
 455         lyxerr <<
 456                 _("Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
 457                   "Command line switches (case sensitive):\n"
 458                   "\t-help           summarize LyX usage\n"
 459                   "\t-sysdir x       try to set system directory to x\n"
 460                   "\t-width x        set the width of the main window\n"
 461                   "\t-height y       set the height of the main window\n"
 462                   "\t-xpos x         set the x position of the main window\n"
 463                   "\t-ypos y         set the y position of the main window\n"
 464                   "\t-dbg feature[,feature]...\n"
 465                   "                  select the features to debug.\n"
 466                   "                  Type `lyx -dbg' to see the list of features\n"
 467                   "\t-Reverse        swaps foreground & background colors\n"
 468                   "\t-Mono           runs LyX in black and white mode\n"
 469                   "\t-FastSelection  use a fast routine for drawing selections\n\n"
 470                   "Check the LyX man page for more options.") << endl;
 471 }
 472
 473
 474 bool LyX::easyParse(int * argc, char * argv[])
 475 {
 476         bool gui = true;
 477         for(int i = 1; i < *argc; ++i) {
 478                 string arg = argv[i];
 479
 480                 // Check for -dbg int
 481                 if (arg == "-dbg") {
 482                         if (i + 1 < *argc) {
 483                                 setDebuggingLevel(argv[i + 1]);
 484
 485                                 // Now, remove these two arguments by shifting
 486                                 // the following two places down.
 487                                 (*argc) -= 2;
 488                                 for (int j = i; j < (*argc); ++j)
 489                                         argv[j] = argv[j + 2];
 490                                 --i; // After shift, check this number again.
 491                         } else {
 492                                 lyxerr << _("List of supported debug flags:")
 493                                        << endl;
 494                                 Debug::showTags(lyxerr);
 495                                 exit(0);
 496                         }
 497
 498                 }
 499                 // Check for "-sysdir"
 500                 else if (arg == "-sysdir") {
 501                         if (i + 1 < *argc) {
 502                                 system_lyxdir = argv[i + 1];
 503
 504                                 // Now, remove these two arguments by shifting
 505                                 // the following two places down.
 506                                 (*argc) -= 2;
 507                                 for (int j= i; j < (*argc); ++j)
 508                                         argv[j] = argv[j + 2];
 509                                 --i; // After shift, check this number again.
 510                         } else
 511                                 lyxerr << _("Missing directory for -sysdir switch!")
 512                                        << endl;
 513                 // Check for --help or -help
 514                 } else if (arg == "--help" || arg == "-help") {
 515                         commandLineHelp();
 516                         exit(0);
 517                 }
 518                 // Check for "-nw": No window
 519                 else if (arg == "-nw") {
 520                         gui = false;
 521                 }
 522
 523                 // Check for "-x": Execute commands
 524                 else if (arg == "-x" || arg == "--execute") {
 525                         if (i + 1 < *argc) {
 526                                 batch_command = string(argv[i + 1]);
 527
 528                                 // Now, remove these two arguments by shifting
 529                                 // the following two places down.
 530                                 (*argc) -= 2;
 531                                 for (int j = i; j < (*argc); ++j)
 532                                         argv[j] = argv[j + 2];
 533                                 --i; // After shift, check this number again.
 534
 535                         }
 536                         else
 537                                 lyxerr << _("Missing command string after  -x switch!") << endl;
 538
 539                         // Argh. Setting gui to false segfaults..
 540                         //gui = false;
 541                 }
 542
 543                 else if (arg == "-e" || arg == "--export") {
 544                         if (i + 1 < *argc) {
 545                                 string type(argv[i+1]);
 546
 547                                 (*argc) -= 2;
 548                                 for (int j = i; j < (*argc); ++j)
 549                                         argv[j] = argv[j + 2];
 550                                 --i; // After shift, check this number again.
 551
 552                                 if (type == "tex")
 553                                         type = "latex";
 554                                 else if (type == "ps")
 555                                         type = "postscript";
 556                                 else if (type == "text" || type == "txt")
 557                                         type = "ascii";
 558
 559                                 if (type == "latex" || type == "postscript"
 560                                     || type == "ascii" || type == "html")
 561                                         batch_command = "buffer-export " + type;
 562                                 else
 563                                         lyxerr << _("Unknown file type '")
 564                                                << type << _("' after ")
 565                                                << arg << _(" switch!") << endl;
 566                         }
 567                         else
 568                                 lyxerr << _("Missing file type [eg latex, "
 569                                             "ps...] after ")
 570                                        << arg << _(" switch!") << endl;
 571                 }
 572         }
 573         return gui;
 574 }
 575
 576
 577 void error_handler(int err_sig)
 578 {
 579         switch (err_sig) {
 580         case SIGHUP:
 581                 lyxerr << "\nlyx: SIGHUP signal caught" << endl;
 582                 break;
 583         case SIGINT:
 584                 // no comments
 585                 break;
 586         case SIGFPE:
 587                 lyxerr << "\nlyx: SIGFPE signal caught" << endl;
 588                 break;
 589         case SIGSEGV:
 590                 lyxerr << "\nlyx: SIGSEGV signal caught" << endl;
 591                 lyxerr <<
 592                         "Sorry, you have found a bug in LyX."
 593                         " If possible, please read 'Known bugs'\n"
 594                         "under the Help menu and then send us "
 595                         "a full bug report. Thanks!" << endl;
 596                 break;
 597         case SIGTERM:
 598                 // no comments
 599                 break;
 600         }
 601
 602         // Deinstall the signal handlers
 603         signal(SIGHUP, SIG_DFL);
 604         signal(SIGINT, SIG_DFL);
 605         signal(SIGFPE, SIG_DFL);
 606         signal(SIGSEGV, SIG_DFL);
 607         signal(SIGTERM, SIG_DFL);
 608
 609         bufferlist.emergencyWriteAll();
 610
 611         lyxerr << "Bye." << endl;
 612         if(err_sig!= SIGHUP && (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
 613                 lyx::abort();
 614         exit(0);
 615 }