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src
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lyx_main.C
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1998-04-23
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/* This file is part of
* ======================================================
*
* LyX, The Document Processor
*
* Copyright (C) 1995 Matthias Ettrich
* Copyright (C) 1995-1998 The LyX Team.
*
*======================================================*/
#include <config.h>
// $Id: lyx_main.C,v 1.1.1.1 1998/04/23 16:02:51 larsbj Exp $
#ifdef __GNUG__
#pragma implementation "lyx_main.h"
#pragma implementation "path.h"
#endif
#if !defined(lint) && !defined(WITH_WARNINGS)
static char vcid[] = "$Id: lyx_main.C,v 1.1.1.1 1998/04/23 16:02:51 larsbj Exp $";
#endif /* lint */
#include <stdlib.h>
#include <signal.h>
#include "version.h"
#include "lyx_main.h"
#include "lyx_gui.h"
#include "lyxrc.h"
#include "path.h"
#include "bufferlist.h"
#include "error.h"
#include "FileInfo.h"
#include "lastfiles.h"
#include "intl.h"
#include "lyxserver.h"
#include "layout.h"
extern void LoadLyXFile(LString const &);
LString system_lyxdir;
LString build_lyxdir;
LString system_tempdir;
LString user_lyxdir; // Default $HOME/.lyx
// Should this be kept global? Asger says Yes.
Error lyxerr;
LastFiles *lastfiles;
LyXRC *lyxrc;
// This is the global bufferlist object
BufferList bufferlist;
LyXServer *lyxserver = 0;
// this should be static, but I need it in buffer.C
bool finished = false; // flag, that we are quitting the program
// convenient to have it here.
kb_keymap *toplevel_keymap;
LyX::LyX(int *argc, char *argv[])
{
// Prevent crash with --help
lyxGUI = 0;
lastfiles = 0;
// Here we need to parse the command line. At least
// we need to parse for "-dbg" and "-help"
bool gui = easyParse(argc, argv);
// Global bindings (this must be done as early as possible.) (Lgb)
toplevel_keymap = new kb_keymap;
lyxerr.debug("Initializing lyxrc");
lyxrc = new LyXRC;
// Make the GUI object, and let it take care of the
// command line arguments that concerns it.
lyxerr.debug("Initializing LyXGUI...");
lyxGUI = new LyXGUI(this, argc, argv, gui);
lyxerr.debug("Initializing LyXGUI...done");
// Initialization of LyX (reads lyxrc and more)
lyxerr.debug("Initializing LyX::init...");
init(argc, argv);
lyxerr.debug("Initializing LyX::init...done");
lyxGUI->init();
// Load the files specified in the command line.
// Now the GUI and LyX have taken care of their arguments, so
// the only thing left on the command line should be
// filenames.
if ((*argc)==2)
lyxerr.debug("Opening document...");
else if ((*argc)>2)
lyxerr.debug("Opening documents...");
Buffer *last_loaded = NULL;
for (int argi = (*argc) - 1; argi >= 1; argi--) {
Buffer * loadb = bufferlist.loadLyXFile(argv[argi]);
if (loadb != 0) {
last_loaded = loadb;
}
}
if (last_loaded != NULL) {
lyxerr.debug("Yes we loaded some files.");
lyxGUI->regBuf(last_loaded);
}
// Let the ball begin...
lyxGUI->runTime();
}
// A destructor is always necessary (asierra-970604)
LyX::~LyX()
{
if (lastfiles)
delete lastfiles;
if (lyxGUI)
delete lyxGUI;
}
void error_handler(int err_sig);
void LyX::init(int */*argc*/, char **argv)
{
// Install the signal handlers
struct sigaction act;
act.sa_handler = error_handler;
//act.sa_mask = 0;
act.sa_flags = SA_RESETHAND;
sigaction(SIGHUP, &act, NULL);
sigaction(SIGFPE, &act, NULL);
sigaction(SIGSEGV, &act, NULL);
sigaction(SIGINT, &act, NULL);
sigaction(SIGTERM, &act, NULL);
//
// Determine path of binary
//
LString binpath = argv[0];
binpath.subst('\\','/');
LString binname = OnlyFilename(argv[0]);
// Sorry for system specific code. (SMiyata)
if (binname.suffixIs(".exe")) binname.substring(0,binname.length()-5);
binpath = ExpandPath(binpath); // This expands ./ and ~/
if (!AbsolutePath(binpath)) {
LString binsearchpath = getEnvPath("PATH");
binsearchpath += ";."; // This will make "src/lyx" work always :-)
binpath = FileOpenSearch(binsearchpath, argv[0]);
}
binpath = MakeAbsPath(OnlyPath(binpath));
if (binpath.empty()) {
lyxerr.print(_("Warning: could not determine path of binary."));
lyxerr.print(_("If you have problems, try starting LyX with an absolute path."));
}
lyxerr.debug("Path of binary: " + binpath);
//
// Determine system directory.
//
// Directories are searched in this order:
// 1) -sysdir command line parameter
// 2) LYX_DIR_12 environment variable
// 3) Maybe <path of binary>/TOP_SRCDIR/lib
// 4) <path of binary>/../share/<name of binary>/
// 5) hardcoded lyx_dir
// The directory is checked for the presence of the file
// "chkconfig.ltx", and if that is present, the directory
// is accepted as the system directory.
// If no chkconfig.ltx file is found, a warning is given,
// and the hardcoded lyx_dir is used.
// If we had a command line switch, system_lyxdir is already set
LString searchpath = MakeAbsPath(system_lyxdir) + ';';
// LYX_DIR_12 environment variable
LString lyxdir = getEnvPath("LYX_DIR_12");
if (!lyxdir.empty()) {
lyxerr.debug("LYX_DIR_12: " + lyxdir, Error::INIT);
searchpath += lyxdir + ';';
}
// <path of binary>/TOP_SRCDIR/lib
build_lyxdir = MakeAbsPath("../lib", binpath);
if (!FileSearch(build_lyxdir, "lyxrc.defaults").empty()) {
searchpath += MakeAbsPath(AddPath(TOP_SRCDIR, "lib"),
binpath) + ';';
lyxerr.debug("Checking whether LyX is run in "
"place... yes", Error::INIT);
} else {
lyxerr.debug("Checking whether LyX is run in place... no",
Error::INIT);
build_lyxdir.erase();
}
// Path of binary/../share/name of binary/
searchpath += NormalizePath(binpath + "../share/" +
OnlyFilename(binname)) + ';';
// Hardcoded dir
searchpath += LYX_DIR;
// If debugging, show complete search path
lyxerr.debug("System directory search path: "+searchpath, Error::INIT);
LString const filename = "chkconfig.ltx";
LString temp = FileOpenSearch(searchpath, filename, LString());
system_lyxdir = OnlyPath(temp);
// Reduce "path/../path" stuff out of system directory
system_lyxdir = NormalizePath(system_lyxdir);
bool path_shown = false;
// Warn if environment variable is set, but unusable
if (!lyxdir.empty()) {
if (system_lyxdir != NormalizePath(lyxdir)) {
lyxerr.print(_("LYX_DIR_12 environment variable no good."));
lyxerr.print(_("System directory set to: ")
+ system_lyxdir);
path_shown = true;
}
}
// Warn the user if we couldn't find "chkconfig.ltx"
if (system_lyxdir.empty()) {
lyxerr.print(_("LyX Warning! Couldn't determine system directory."));
lyxerr.print(_("Try the '-sysdir' command line parameter or"));
lyxerr.print(_("set the environment variable LYX_DIR_12 to the "
"LyX system directory"));
lyxerr.print(_("containing the file `chkconfig.ltx'."));
if (!path_shown)
lyxerr.print(_("Using built-in default ")
+ LString(LYX_DIR) + _(" but expect problems."));
else
lyxerr.print(_("Expect problems."));
system_lyxdir = LYX_DIR;
path_shown = true;
}
// Report the system directory if debugging is on
if (!path_shown)
lyxerr.debug("System directory: '" + system_lyxdir + '\'',
Error::INIT);
//
// Determine user lyx-dir
//
user_lyxdir = AddPath(getEnvPath("HOME"), LString(".")+LYX_NAME);
lyxerr.debug("User LyX directory: '"
+ user_lyxdir + "'", Error::INIT);
// Check that user LyX directory is ok.
queryUserLyXDir();
//
// Load the layouts first
//
lyxerr.debug("Reading layouts...", Error::INIT);
LyXSetStyle();
//
// Shine up lyxrc defaults
//
// Default template path: system_dir/templates
if (lyxrc->template_path.empty()){
lyxrc->template_path = AddPath(system_lyxdir, "templates");
}
// Default lastfiles file: $HOME/.lyx/lastfiles
if (lyxrc->lastfiles.empty()){
lyxrc->lastfiles = AddName(user_lyxdir, "lastfiles");
}
// Calculate screen dpi as average of x-DPI and y-DPI:
Screen * scr=(DefaultScreenOfDisplay(fl_get_display()));
lyxrc->dpi = ((HeightOfScreen(scr)* 25.4 / HeightMMOfScreen(scr)) +
(WidthOfScreen(scr)* 25.4 / WidthMMOfScreen(scr))) / 2;
lyxerr.debug(LString("DPI setting detected to be ") +
int(lyxrc->dpi+0.5));
//
// Read configuration files
//
ReadRcFile("lyxrc.defaults");
ReadRcFile("lyxrc");
if (lyxerr.debugging(Error::LYXRC)) {
lyxrc->Print();
}
// Create temp directory
system_tempdir = CreateLyXTmpDir(lyxrc->tempdir_path);
if (lyxerr.debugging(Error::INIT)) {
lyxerr.print("LyX tmp dir: `" + system_tempdir + '\'');
}
// load the lastfiles mini-database
lyxerr.debug("Reading lastfiles `" + lyxrc->lastfiles + "'...",
Error::INIT);
lastfiles = new LastFiles(lyxrc->lastfiles,
lyxrc->check_lastfiles,
lyxrc->num_lastfiles);
// start up the lyxserver. (is this a bit early?) (Lgb)
// 0.12 this will be way to early, we need the GUI to be initialized
// first, so move it for now.
// lyxserver = new LyXServer;
}
// This one is not allowed to use anything on the main form, since that
// one does not exist yet. (Asger)
void LyX::queryUserLyXDir()
{
// Does user directory exist?
FileInfo fileInfo(user_lyxdir);
if (fileInfo.isOK() && fileInfo.isDir()) {
return;
}
// Nope
if (!AskQuestion(_("You don't have a personal LyX directory."),
_("It is needed to keep your own configuration."),
_("Should I try to set it up for you (recommended)?"))) {
lyxerr.print(_("Running without personal LyX directory."));
// No, let's use $HOME instead.
user_lyxdir = getEnvPath("HOME");
return;
}
// Tell the user what is going on
lyxerr.print(_("LyX: Creating directory ") + user_lyxdir + _(" and running configure..."));
// Create directory structure
if (!createDirectory(user_lyxdir, 0755)) {
// Failed, let's use $HOME instead.
user_lyxdir = getEnvPath("HOME");
lyxerr.print(_("Failed. Will use ") + user_lyxdir + _(" instead."));
return;
}
// Run configure in user lyx directory
//PathPush(user_lyxdir);
Path p(user_lyxdir);
system(AddName(system_lyxdir,"configure").c_str());
//PathPop();
lyxerr.print(LString("LyX: ") + _("Done!"));
}
// Read the rc file `name'
void LyX::ReadRcFile(LString const & name)
{
lyxerr.debug("About to read "+name+"...", Error::INIT);
LString lyxrc_path = LibFileSearch(LString(), name);
if (!lyxrc_path.empty()){
lyxerr.debug("Found "+name+" in " + lyxrc_path, Error::INIT);
if (lyxrc->Read(lyxrc_path) < 0) {
WriteAlert(_("LyX Warning!"),
_("Error while reading ")+lyxrc_path+".",
_("Using built-in defaults."));
}
} else
lyxerr.debug("Could not find "+name, Error::INIT);
}
// Give command line help
void commandLineHelp()
{
fprintf(stdout,
_("LyX " LYX_VERSION " of " LYX_RELEASE ".\n"
"Usage: lyx [ command line switches ] [ name.lyx ... ]\n"
"Command line switches (case sensitive):\n"
" -help summarize LyX usage\n"
" -sysdir x try to set system directory to x\n"
" -width x set the width of the main window\n"
" -height y set the height of the main window\n"
" -xpos x set the x position of the main window\n"
" -ypos y set the y position of the main window\n"
" -dbg feature[,feature]...\n"
" select the features to debug.\n"
" Type `lyx -dbg' to see the list of features\n"
" -Reverse swaps foreground & background colors\n"
" -Mono runs LyX in black and white mode\n"
" -FastSelection use a fast routine for drawing selections\n"
"Check the LyX man page for more options.\n"));
}
bool LyX::easyParse(int *argc, char *argv[])
{
bool gui = true;
for(int i=1; i < *argc; i++) {
LString arg = argv[i];
// Check for -dbg int
if (arg == "-dbg") {
if (i+1 < *argc) {
lyxerr.setDebugLevel(argv[i+1]);
// Now, remove these two arguments by shifting
// the following two places down.
(*argc) -= 2;
for (int j=i; j < (*argc); j++)
argv[j] = argv[j+2];
i--; // After shift, check this number again.
} else {
lyxerr.print(_("List of supported debug flags:\n"));
lyxerr.showTags();
exit(0);
}
}
// Check for "-sysdir"
else if (arg == "-sysdir") {
if (i+1 < *argc) {
system_lyxdir = argv[i+1];
// Now, remove these two arguments by shifting
// the following two places down.
(*argc) -= 2;
for (int j=i; j < (*argc); j++)
argv[j] = argv[j+2];
i--; // After shift, check this number again.
} else
lyxerr.print(_("Missing directory for -sysdir switch!"));
// Check for --help or -help
} else if (arg == "--help" || arg == "-help") {
commandLineHelp();
exit(0);
}
// Check for "-nw": No window
else if (arg == "-nw") {
gui = false;
}
}
return gui;
}
void error_handler(int err_sig)
{
switch (err_sig) {
case SIGHUP:
fprintf(stderr, "\nlyx: SIGHUP signal caught\n");
break;
case SIGINT:
// no comments
break;
case SIGFPE:
fprintf(stderr, "\nlyx: SIGFPE signal caught\n");
break;
case SIGSEGV:
fprintf(stderr, "\nlyx: SIGSEGV signal caught\n");
fprintf(stderr,
"Sorry, you have found a bug in LyX."
" If possible, please read 'Known bugs'\n"
"under the Help menu and then send us "
"a full bug report. Thanks!\n");
break;
case SIGTERM:
// no comments
break;
}
// Deinstall the signal handlers
struct sigaction act;
act.sa_handler = SIG_DFL;
//act.sa_mask = 0;
act.sa_flags = 0;
sigaction(SIGHUP, &act, NULL);
sigaction(SIGINT, &act, NULL);
sigaction(SIGFPE, &act, NULL);
sigaction(SIGSEGV, &act, NULL);
sigaction(SIGTERM, &act, NULL);
bufferlist.emergencyWriteAll();
lyxerr.print("Bye.");
if(err_sig!=SIGHUP && (getenv("LYXDEBUG") || err_sig == SIGSEGV))
abort();
exit(0);
}