]> git.lyx.org Git - lyx.git/blobdiff - src/lyx_main.C
layout file converter for layout files in old format
[lyx.git] / src / lyx_main.C
index f9b845e70e8852e5461f0d74c17a96600f44d387..4729678c0cbf294510b722f2ad761c2aa5ed9648 100644 (file)
 #include "lyxtextclasslist.h"
 #include "lyxserver.h"
 #include "MenuBackend.h"
+#include "mover.h"
 #include "ToolbarBackend.h"
 
+#include "mathed/math_inset.h"
+
 #include "frontends/Alert.h"
 #include "frontends/lyx_gui.h"
+#include "frontends/LyXView.h"
 
-#include "support/FileInfo.h"
+#include "support/environment.h"
 #include "support/filetools.h"
 #include "support/lyxlib.h"
 #include "support/os.h"
+#include "support/package.h"
 #include "support/path.h"
-#include "support/path_defines.h"
 
 #include <boost/bind.hpp>
+#include <boost/filesystem/operations.hpp>
 
 #include <iostream>
 #include <csignal>
@@ -57,20 +62,19 @@ using lyx::support::AddName;
 using lyx::support::AddPath;
 using lyx::support::bformat;
 using lyx::support::createDirectory;
-using lyx::support::CreateLyXTmpDir;
-using lyx::support::FileInfo;
+using lyx::support::createLyXTmpDir;
 using lyx::support::FileSearch;
-using lyx::support::GetEnv;
-using lyx::support::GetEnvPath;
+using lyx::support::getEnv;
 using lyx::support::i18nLibFileSearch;
 using lyx::support::LibFileSearch;
+using lyx::support::package;
 using lyx::support::Path;
+using lyx::support::prependEnvPath;
+using lyx::support::QuoteName;
 using lyx::support::rtrim;
-using lyx::support::setLyxPaths;
-using lyx::support::system_lyxdir;
-using lyx::support::user_lyxdir;
 
 namespace os = lyx::support::os;
+namespace fs = boost::filesystem;
 
 using std::endl;
 using std::string;
@@ -83,12 +87,10 @@ using std::system;
 #endif
 
 
-extern void QuitLyX();
+extern void QuitLyX(bool);
 
 extern LyXServer * lyxserver;
 
-boost::scoped_ptr<LastFiles> lastfiles;
-
 // This is the global bufferlist object
 BufferList bufferlist;
 
@@ -97,6 +99,12 @@ boost::scoped_ptr<kb_keymap> toplevel_keymap;
 
 namespace {
 
+// Filled with the command line arguments "foo" of "-sysdir foo" or
+// "-userdir foo".
+string cl_system_support;
+string cl_user_support;
+
+
 void showFileError(string const & error)
 {
        Alert::warning(_("Could not read configuration file"),
@@ -105,18 +113,101 @@ void showFileError(string const & error)
        exit(EXIT_FAILURE);
 }
 
+
+void reconfigureUserLyXDir()
+{
+       string const configure_script =
+               AddName(package().system_support(), "configure");
+       string const configure_command =
+               "sh " + QuoteName(configure_script);
+
+       lyxerr << _("LyX: reconfiguring user directory") << endl;
+       Path p(package().user_support());
+       ::system(configure_command.c_str());
+       lyxerr << "LyX: " << _("Done!") << endl;
+}
+
+} // namespace anon
+
+
+boost::scoped_ptr<LyX> LyX::singleton_;
+
+void LyX::exec(int & argc, char * argv[])
+{
+       BOOST_ASSERT(!singleton_.get());
+       // We must return from this before launching the gui so that
+       // other parts of the code can access singleton_ through
+       // LyX::ref and LyX::cref.
+       singleton_.reset(new LyX);
+       // Start the real execution loop.
+       singleton_->priv_exec(argc, argv);
+}
+
+
+LyX & LyX::ref()
+{
+       BOOST_ASSERT(singleton_.get());
+       return *singleton_.get();
 }
 
-LyX::LyX(int & argc, char * argv[])
+
+LyX const & LyX::cref()
+{
+       BOOST_ASSERT(singleton_.get());
+       return *singleton_.get();
+}
+
+
+LyX::LyX()
+       : first_start(false)
+{}
+
+
+LastFiles & LyX::lastfiles()
+{
+       BOOST_ASSERT(lastfiles_.get());
+       return *lastfiles_.get();
+}
+
+
+LastFiles const & LyX::lastfiles() const
+{
+       BOOST_ASSERT(lastfiles_.get());
+       return *lastfiles_.get();
+}
+
+
+void LyX::addLyXView(boost::shared_ptr<LyXView> const & lyxview)
+{
+       views_.push_back(lyxview);
+}
+
+
+Buffer const * const LyX::updateInset(InsetBase const * inset) const
+{
+       if (!inset)
+               return 0;
+
+       Buffer const * buffer_ptr = 0;
+       ViewList::const_iterator it = views_.begin();
+       ViewList::const_iterator const end = views_.end();
+       for (; it != end; ++it) {
+               Buffer const * ptr = (*it)->updateInset(inset);
+               if (ptr)
+                       buffer_ptr = ptr;
+       }
+       return buffer_ptr;
+}
+
+
+void LyX::priv_exec(int & argc, char * argv[])
 {
        // Here we need to parse the command line. At least
        // we need to parse for "-dbg" and "-help"
        bool const want_gui = easyParse(argc, argv);
 
-       // set the DisplayTranslator only once; should that be done here??
-       // if this should not be in this file, please also remove
-       // #include "graphics/GraphicsTypes.h" at the top -- Rob Lahaye.
-       lyx::graphics::setDisplayTranslator();
+       lyx::support::init_package(argv[0], cl_system_support, cl_user_support,
+                                  lyx::support::top_build_dir_is_one_level_up);
 
        if (want_gui)
                lyx_gui::parse_init(argc, argv);
@@ -139,10 +230,12 @@ LyX::LyX(int & argc, char * argv[])
        if (want_gui)
                lyx_gui::parse_lyxrc();
 
+       initMath();
+
        vector<string> files;
 
        for (int argi = argc - 1; argi >= 1; --argi)
-               files.push_back(argv[argi]);
+               files.push_back(os::internal_path(argv[argi]));
 
        if (first_start)
                files.push_back(i18nLibFileSearch("examples", "splash.lyx"));
@@ -178,56 +271,115 @@ LyX::LyX(int & argc, char * argv[])
                if (last_loaded) {
                        bool success = false;
                        if (last_loaded->dispatch(batch_command, &success)) {
-                               QuitLyX();
+                               QuitLyX(false);
                                exit(!success);
                        }
                }
                files.clear(); // the files are already loaded
        }
 
-       lyx_gui::start(batch_command, files);
+       if (want_gui)
+               lyx_gui::start(batch_command, files);
+       else {
+               // Something went wrong above
+               QuitLyX(false);
+               exit(EXIT_FAILURE);
+       }
 }
 
 
+/*
+Signals and Windows
+===================
+The SIGHUP signal does not exist on Windows and does not need to be handled.
+
+Windows handles SIGFPE and SIGSEGV signals as expected.
+
+Cntl+C interrupts (mapped to SIGINT by Windows' POSIX compatability layer)
+cause a new thread to be spawned. This may well result in unexpected
+behaviour by the single-threaded LyX.
+
+SIGTERM signals will come only from another process actually sending
+that signal using 'raise' in Windows' POSIX compatability layer. It will
+not come from the general "terminate process" methods that everyone
+actually uses (and which can't be trapped). Killing an app 'politely' on
+Windows involves first sending a WM_CLOSE message, something that is
+caught already by the Qt frontend.
+
+For more information see:
+
+http://aspn.activestate.com/ASPN/Mail/Message/ActiveTcl/2034055
+...signals are mostly useless on Windows for a variety of reasons that are
+Windows specific...
+
+'UNIX Application Migration Guide, Chapter 9'
+http://msdn.microsoft.com/library/en-us/dnucmg/html/UCMGch09.asp
+
+'How To Terminate an Application "Cleanly" in Win32'
+http://support.microsoft.com/default.aspx?scid=kb;en-us;178893
+*/
 extern "C" {
 
 static void error_handler(int err_sig)
 {
+       // Throw away any signals other than the first one received.
+       static sig_atomic_t handling_error = false;
+       if (handling_error)
+               return;
+       handling_error = true;
+
+       // We have received a signal indicating a fatal error, so
+       // try and save the data ASAP.
+       LyX::cref().emergencyCleanup();
+
+       // These lyxerr calls may or may not work:
+
+       // Signals are asynchronous, so the main program may be in a very
+       // fragile state when a signal is processed and thus while a signal
+       // handler function executes.
+       // In general, therefore, we should avoid performing any
+       // I/O operations or calling most library and system functions from
+       // signal handlers.
+
+       // This shouldn't matter here, however, as we've already invoked
+       // emergencyCleanup.
        switch (err_sig) {
+#ifdef SIGHUP
        case SIGHUP:
-               lyxerr << "\nlyx: SIGHUP signal caught" << endl;
-               break;
-       case SIGINT:
-               // no comments
+               lyxerr << "\nlyx: SIGHUP signal caught\nBye." << endl;
                break;
+#endif
        case SIGFPE:
-               lyxerr << "\nlyx: SIGFPE signal caught" << endl;
+               lyxerr << "\nlyx: SIGFPE signal caught\nBye." << endl;
                break;
        case SIGSEGV:
-               lyxerr << "\nlyx: SIGSEGV signal caught" << endl;
-               lyxerr <<
-                       "Sorry, you have found a bug in LyX. "
-                       "Please read the bug-reporting instructions "
-                       "in Help->Introduction and send us a bug report, "
-                       "if necessary. Thanks !" << endl;
+               lyxerr << "\nlyx: SIGSEGV signal caught\n"
+                         "Sorry, you have found a bug in LyX. "
+                         "Please read the bug-reporting instructions "
+                         "in Help->Introduction and send us a bug report, "
+                         "if necessary. Thanks !\nBye." << endl;
                break;
+       case SIGINT:
        case SIGTERM:
                // no comments
                break;
        }
 
        // Deinstall the signal handlers
+#ifdef SIGHUP
        signal(SIGHUP, SIG_DFL);
+#endif
        signal(SIGINT, SIG_DFL);
        signal(SIGFPE, SIG_DFL);
        signal(SIGSEGV, SIG_DFL);
        signal(SIGTERM, SIG_DFL);
 
-       LyX::emergencyCleanup();
-
-       lyxerr << "Bye." << endl;
-       if (err_sig!= SIGHUP &&
-          (!GetEnv("LYXDEBUG").empty() || err_sig == SIGSEGV))
+#ifdef SIGHUP
+       if (err_sig == SIGSEGV ||
+           (err_sig != SIGHUP && !getEnv("LYXDEBUG").empty()))
+#else
+       if (err_sig == SIGSEGV || !getEnv("LYXDEBUG").empty())
+#endif
                lyx::support::abort();
        exit(0);
 }
@@ -245,18 +397,21 @@ void LyX::printError(ErrorItem const & ei)
 
 void LyX::init(bool gui)
 {
+#ifdef SIGHUP
        signal(SIGHUP, error_handler);
+#endif
        signal(SIGFPE, error_handler);
        signal(SIGSEGV, error_handler);
        signal(SIGINT, error_handler);
        signal(SIGTERM, error_handler);
-
-       bool const explicit_userdir = setLyxPaths();
+       // SIGPIPE can be safely ignored.
 
        // Check that user LyX directory is ok. We don't do that if
        // running in batch mode.
+       bool reconfigure = false;
        if (gui) {
-               queryUserLyXDir(explicit_userdir);
+               reconfigure =
+                       queryUserLyXDir(package().explicit_user_support());
        } else {
                first_start = false;
        }
@@ -264,12 +419,16 @@ void LyX::init(bool gui)
        // Disable gui when easyparse says so
        lyx_gui::use_gui = gui;
 
+       lyxrc.tempdir_path = package().temp_dir();
+       lyxrc.document_path = package().document_dir();
+
        if (lyxrc.template_path.empty()) {
-               lyxrc.template_path = AddPath(system_lyxdir(), "templates");
+               lyxrc.template_path = AddPath(package().system_support(),
+                                             "templates");
        }
 
        if (lyxrc.lastfiles.empty()) {
-               lyxrc.lastfiles = AddName(user_lyxdir(), "lastfiles");
+               lyxrc.lastfiles = AddName(package().user_support(), "lastfiles");
        }
 
        if (lyxrc.roman_font_name.empty())
@@ -287,6 +446,7 @@ void LyX::init(bool gui)
        system_lyxrc = lyxrc;
        system_formats = formats;
        system_converters = converters;
+       system_movers = movers;
        system_lcolor = lcolor;
 
        string prefsfile = "preferences";
@@ -316,16 +476,50 @@ void LyX::init(bool gui)
        if (lyxerr.debugging(Debug::LYXRC))
                lyxrc.print();
 
-       os::setTmpDir(CreateLyXTmpDir(lyxrc.tempdir_path));
+       os::cygwin_path_fix(lyxrc.cygwin_path_fix);
+       if (!lyxrc.path_prefix.empty())
+               prependEnvPath("PATH", lyxrc.path_prefix);
+
+#if !defined (USE_POSIX_PACKAGING)
+       // Add the directory containing the LyX executable to the path
+       // so that LyX can find things like tex2lyx.
+       if (package().build_support().empty())
+               prependEnvPath("PATH", package().binary_dir());
+#endif
+
+       // Having reset the PATH we're now in a position to run configure
+       // if necessary.
+       if (reconfigure)
+               reconfigureUserLyXDir();
+
+       if (fs::exists(lyxrc.document_path) &&
+           fs::is_directory(lyxrc.document_path))
+               package().document_dir() = lyxrc.document_path;
+
+       package().temp_dir() = createLyXTmpDir(lyxrc.tempdir_path);
+       if (package().temp_dir().empty()) {
+               Alert::error(_("Could not create temporary directory"),
+                            bformat(_("Could not create a temporary directory in\n"
+                                      "%1$s. Make sure that this\n"
+                                      "path exists and is writable and try again."),
+                                    lyxrc.tempdir_path));
+               // createLyXTmpDir() tries sufficiently hard to create a
+               // usable temp dir, so the probability to come here is
+               // close to zero. We therefore don't try to overcome this
+               // problem with e.g. asking the user for a new path and
+               // trying again but simply exit.
+               exit(EXIT_FAILURE);
+       }
+
        if (lyxerr.debugging(Debug::INIT)) {
-               lyxerr << "LyX tmp dir: `" << os::getTmpDir() << '\'' << endl;
+               lyxerr << "LyX tmp dir: `" << package().temp_dir() << '\'' << endl;
        }
 
        lyxerr[Debug::INIT] << "Reading lastfiles `"
                            << lyxrc.lastfiles << "'..." << endl;
-       lastfiles.reset(new LastFiles(lyxrc.lastfiles,
-                                     lyxrc.check_lastfiles,
-                                     lyxrc.num_lastfiles));
+       lastfiles_.reset(new LastFiles(lyxrc.lastfiles,
+                                      lyxrc.check_lastfiles,
+                                      lyxrc.num_lastfiles));
 }
 
 
@@ -337,7 +531,9 @@ void LyX::defaultKeyBindings(kb_keymap  * kbmap)
        kbmap->bind("Down", FuncRequest(LFUN_DOWN));
 
        kbmap->bind("Tab", FuncRequest(LFUN_CELL_FORWARD));
-       kbmap->bind("ISO_Left_Tab", FuncRequest(LFUN_CELL_FORWARD));
+       kbmap->bind("C-Tab", FuncRequest(LFUN_CELL_SPLIT));
+       kbmap->bind("~S-ISO_Left_Tab", FuncRequest(LFUN_CELL_BACKWARD));
+       kbmap->bind("~S-BackTab", FuncRequest(LFUN_CELL_BACKWARD));
 
        kbmap->bind("Home", FuncRequest(LFUN_HOME));
        kbmap->bind("End", FuncRequest(LFUN_END));
@@ -350,10 +546,6 @@ void LyX::defaultKeyBindings(kb_keymap  * kbmap)
        kbmap->bind("Delete", FuncRequest(LFUN_DELETE));
        kbmap->bind("BackSpace", FuncRequest(LFUN_BACKSPACE));
 
-       // sub- and superscript -MV
-       kbmap->bind("~S-underscore", FuncRequest(LFUN_SUBSCRIPT));
-       kbmap->bind("~S-asciicircum", FuncRequest(LFUN_SUPERSCRIPT));
-
        // kbmap->bindings to enable the use of the numeric keypad
        // e.g. Num Lock set
        //kbmap->bind("KP_0", FuncRequest(LFUN_SELFINSERT));
@@ -380,14 +572,10 @@ void LyX::defaultKeyBindings(kb_keymap  * kbmap)
        kbmap->bind("KP_End", FuncRequest(LFUN_END));
        kbmap->bind("KP_Prior", FuncRequest(LFUN_PRIOR));
        kbmap->bind("KP_Next", FuncRequest(LFUN_NEXT));
-
-       kbmap->bind("C-Tab", FuncRequest(LFUN_CELL_SPLIT));
-       kbmap->bind("S-Tab", FuncRequest(LFUN_CELL_BACKWARD));
-       kbmap->bind("S-ISO_Left_Tab", FuncRequest(LFUN_CELL_BACKWARD));
 }
 
 
-void LyX::emergencyCleanup()
+void LyX::emergencyCleanup() const
 {
        // what to do about tmpfiles is non-obvious. we would
        // like to delete any we find, but our lyxdir might
@@ -426,44 +614,58 @@ void LyX::deadKeyBindings(kb_keymap * kbmap)
 }
 
 
-void LyX::queryUserLyXDir(bool explicit_userdir)
+bool LyX::queryUserLyXDir(bool explicit_userdir)
 {
-       string const configure_script = AddName(system_lyxdir(), "configure");
+       bool reconfigure = false;
 
        // Does user directory exist?
-       FileInfo fileInfo(user_lyxdir());
-       if (fileInfo.isOK() && fileInfo.isDir()) {
+       if (fs::exists(package().user_support()) &&
+           fs::is_directory(package().user_support())) {
                first_start = false;
-               FileInfo script(configure_script);
-               FileInfo defaults(AddName(user_lyxdir(), "lyxrc.defaults"));
-               if (defaults.isOK() && script.isOK()
-                   && defaults.getModificationTime() < script.getModificationTime()) {
-                       lyxerr << _("LyX: reconfiguring user directory")
-                              << endl;
-                       Path p(user_lyxdir());
-                       ::system(configure_script.c_str());
-                       lyxerr << "LyX: " << _("Done!") << endl;
+               string const configure_script =
+                       AddName(package().system_support(), "configure");
+               string const userDefaults =
+                       AddName(package().user_support(), "lyxrc.defaults");
+               if (fs::exists(configure_script) &&
+                   fs::exists(userDefaults) &&
+                   fs::last_write_time(configure_script)
+                   > fs::last_write_time(userDefaults)) {
+                       reconfigure = true;
                }
-               return;
+               return reconfigure;
        }
 
        first_start = !explicit_userdir;
 
-       lyxerr << bformat(_("LyX: Creating directory %1$s"
-                                 " and running configure..."), user_lyxdir()) << endl;
+       // If the user specified explicitly a directory, ask whether
+       // to create it. If the user says "no", then exit.
+       if (explicit_userdir &&
+           Alert::prompt(
+                   _("Missing user LyX directory"),
+                   bformat(_("You have specified a non-existent user "
+                             "LyX directory, %1$s.\n"
+                             "It is needed to keep your own configuration."),
+                           package().user_support()),
+                   1, 0,
+                   _("&Create directory."),
+                   _("&Exit LyX."))) {
+               lyxerr << _("No user LyX directory. Exiting.") << endl;
+               exit(1);
+       }
+
+       lyxerr << bformat(_("LyX: Creating directory %1$s"),
+                         package().user_support())
+              << endl;
+       reconfigure = true;
 
-       if (!createDirectory(user_lyxdir(), 0755)) {
-               // Failed, let's use $HOME instead.
-               user_lyxdir(GetEnvPath("HOME"));
-               lyxerr << bformat(_("Failed. Will use %1$s instead."),
-                       user_lyxdir()) << endl;
-               return;
+       if (!createDirectory(package().user_support(), 0755)) {
+               // Failed, so let's exit.
+               lyxerr << _("Failed to create directory. Exiting.")
+                      << endl;
+               exit(1);
        }
 
-       // Run configure in user lyx directory
-       Path p(user_lyxdir());
-       ::system(configure_script.c_str());
-       lyxerr << "LyX: " << _("Done!") << endl;
+       return reconfigure;
 }
 
 
@@ -662,7 +864,7 @@ int parse_sysdir(string const & arg, string const &)
                lyxerr << _("Missing directory for -sysdir switch") << endl;
                exit(1);
        }
-       system_lyxdir(arg);
+       cl_system_support = arg;
        return 1;
 }
 
@@ -672,7 +874,7 @@ int parse_userdir(string const & arg, string const &)
                lyxerr << _("Missing directory for -userdir switch") << endl;
                exit(1);
        }
-       user_lyxdir(arg);
+       cl_user_support = arg;
        return 1;
 }
 
@@ -683,9 +885,6 @@ int parse_execute(string const & arg, string const &)
                exit(1);
        }
        batch = arg;
-       // Argh. Setting gui to false segfaults..
-       // FIXME: when ? how ?
-       // is_gui = false;
        return 1;
 }