lyx_mirror/src/lyx_cb.C

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/**
* \file lyx_cb.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Lars Gullik Bj<EFBFBD>nnes
* \author Angus Leeming
* \author John Levon
* \author Andr<EFBFBD> P<EFBFBD>nitz
* \author J<EFBFBD>rgen Vigna
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "lyx_cb.h"
#include "buffer.h"
#include "bufferlist.h"
#include "BufferView.h"
#include "debug.h"
#include "gettext.h"
#include "lastfiles.h"
#include "lyx_main.h"
#include "lyxlayout.h"
#include "lyxrc.h"
#include "lyxtext.h"
#include "paragraph.h"
#include "frontends/Alert.h"
#include "frontends/FileDialog.h"
#include "frontends/lyx_gui.h"
#include "frontends/LyXView.h"
#include "support/FileInfo.h"
#include "support/filetools.h"
#include "support/forkedcall.h"
#include "support/lyxlib.h"
#include "support/os.h"
#include "support/path.h"
#include "support/path_defines.h"
#include "support/systemcall.h"
#include <cerrno>
#include <fstream>
using lyx::support::AddName;
using lyx::support::bformat;
using lyx::support::destroyDir;
using lyx::support::FileInfo;
using lyx::support::ForkedProcess;
using lyx::support::IsLyXFilename;
using lyx::support::LibFileSearch;
using lyx::support::MakeAbsPath;
using lyx::support::MakeDisplayPath;
using lyx::support::OnlyFilename;
using lyx::support::OnlyPath;
using lyx::support::Path;
using lyx::support::removeAutosaveFile;
using lyx::support::rename;
using lyx::support::split;
using lyx::support::system_lyxdir;
using lyx::support::Systemcall;
using lyx::support::tempName;
using lyx::support::unlink;
using lyx::support::user_lyxdir;
namespace os = lyx::support::os;
using std::auto_ptr;
using std::back_inserter;
using std::copy;
using std::endl;
using std::make_pair;
using std::string;
using std::ifstream;
using std::ios;
using std::istream_iterator;
extern BufferList bufferlist;
// this should be static, but I need it in buffer.C
bool quitting; // flag, that we are quitting the program
//
// Menu callbacks
//
bool MenuWrite(Buffer * buffer)
{
if (buffer->save()) {
LyX::ref().lastfiles().newFile(buffer->fileName());
return true;
}
// FIXME: we don't tell the user *WHY* the save failed !!
string const file = MakeDisplayPath(buffer->fileName(), 30);
string text = bformat(_("The document %1$s could not be saved.\n\n"
"Do you want to rename the document and try again?"), file);
int const ret = Alert::prompt(_("Rename and save?"),
text, 0, 1, _("&Rename"), _("&Cancel"));
if (ret == 0)
return WriteAs(buffer);
return false;
}
bool WriteAs(Buffer * buffer, string const & filename)
{
string fname = buffer->fileName();
string const oldname = fname;
if (filename.empty()) {
FileDialog fileDlg(_("Choose a filename to save document as"),
LFUN_WRITEAS,
make_pair(string(_("Documents|#o#O")),
string(lyxrc.document_path)),
make_pair(string(_("Templates|#T#t")),
string(lyxrc.template_path)));
if (!IsLyXFilename(fname))
fname += ".lyx";
FileDialog::Result result =
fileDlg.save(OnlyPath(fname),
_("*.lyx| LyX Documents (*.lyx)"),
OnlyFilename(fname));
if (result.first == FileDialog::Later)
return false;
fname = result.second;
if (fname.empty())
return false;
// Make sure the absolute filename ends with appropriate suffix
fname = MakeAbsPath(fname);
if (!IsLyXFilename(fname))
fname += ".lyx";
} else
fname = filename;
FileInfo const myfile(fname);
if (myfile.isOK()) {
string const file = MakeDisplayPath(fname, 30);
string text = bformat(_("The document %1$s already exists.\n\n"
"Do you want to over-write that document?"), file);
int const ret = Alert::prompt(_("Over-write document?"),
text, 0, 1, _("&Over-write"), _("&Cancel"));
if (ret == 1)
return false;
}
// Ok, change the name of the buffer
buffer->setFileName(fname);
buffer->markDirty();
bool unnamed = buffer->isUnnamed();
buffer->setUnnamed(false);
if (!MenuWrite(buffer)) {
buffer->setFileName(oldname);
buffer->setUnnamed(unnamed);
return false;
}
removeAutosaveFile(oldname);
return true;
}
void QuitLyX()
{
lyxerr[Debug::INFO] << "Running QuitLyX." << endl;
if (lyx_gui::use_gui) {
if (!bufferlist.quitWriteAll())
return;
LyX::cref().lastfiles().writeFile(lyxrc.lastfiles);
}
// Set a flag that we do quitting from the program,
// so no refreshes are necessary.
quitting = true;
// close buffers first
bufferlist.closeAll();
// do any other cleanup procedures now
lyxerr[Debug::INFO] << "Deleting tmp dir " << os::getTmpDir() << endl;
if (destroyDir(os::getTmpDir()) != 0) {
string msg = bformat(_("Could not remove the temporary directory %1$s"),
os::getTmpDir());
Alert::warning(_("Could not remove temporary directory"), msg);
}
lyx_gui::exit();
}
namespace {
class AutoSaveBuffer : public ForkedProcess {
public:
///
AutoSaveBuffer(BufferView & bv, string const & fname)
: bv_(bv), fname_(fname) {}
///
virtual auto_ptr<ForkedProcess> clone() const {
return auto_ptr<ForkedProcess>(new AutoSaveBuffer(*this));
}
///
int start();
private:
///
virtual int generateChild();
///
BufferView & bv_;
string fname_;
};
int AutoSaveBuffer::start()
{
command_ = bformat(_("Auto-saving %1$s"), fname_);
return runNonBlocking();
}
int AutoSaveBuffer::generateChild()
{
// tmp_ret will be located (usually) in /tmp
// will that be a problem?
pid_t const pid = fork(); // If you want to debug the autosave
// you should set pid to -1, and comment out the
// fork.
if (pid == 0 || pid == -1) {
// pid = -1 signifies that lyx was unable
// to fork. But we will do the save
// anyway.
bool failed = false;
string const tmp_ret = tempName(string(), "lyxauto");
if (!tmp_ret.empty()) {
bv_.buffer()->writeFile(tmp_ret);
// assume successful write of tmp_ret
if (!rename(tmp_ret, fname_)) {
failed = true;
// most likely couldn't move between filesystems
// unless write of tmp_ret failed
// so remove tmp file (if it exists)
unlink(tmp_ret);
}
} else {
failed = true;
}
if (failed) {
// failed to write/rename tmp_ret so try writing direct
if (!bv_.buffer()->writeFile(fname_)) {
// It is dangerous to do this in the child,
// but safe in the parent, so...
if (pid == -1)
bv_.owner()->message(_("Autosave failed!"));
}
}
if (pid == 0) { // we are the child so...
_exit(0);
}
}
return pid;
}
} // namespace anon
void AutoSave(BufferView * bv)
// should probably be moved into BufferList (Lgb)
// Perfect target for a thread...
{
if (!bv->available())
return;
if (bv->buffer()->isBakClean() || bv->buffer()->isReadonly()) {
// We don't save now, but we'll try again later
bv->owner()->resetAutosaveTimer();
return;
}
bv->owner()->message(_("Autosaving current document..."));
// create autosave filename
string fname = bv->buffer()->filePath();
fname += '#';
fname += OnlyFilename(bv->buffer()->fileName());
fname += '#';
AutoSaveBuffer autosave(*bv, fname);
autosave.start();
bv->buffer()->markBakClean();
bv->owner()->resetAutosaveTimer();
}
//
// Copyright CHT Software Service GmbH
// Uwe C. Schroeder
//
// create new file with template
// SERVERCMD !
//
void NewFile(BufferView * bv, string const & filename)
{
// Split argument by :
string name;
string tmpname = split(filename, name, ':');
#ifdef __EMX__ // Fix me! lyx_cb.C may not be low level enough to allow this.
if (name.length() == 1
&& isalpha(static_cast<unsigned char>(name[0]))
&& (prefixIs(tmpname, "/") || prefixIs(tmpname, "\\"))) {
name += ':';
name += token(tmpname, ':', 0);
tmpname = split(tmpname, ':');
}
#endif
lyxerr[Debug::INFO] << "Arg is " << filename
<< "\nName is " << name
<< "\nTemplate is " << tmpname << endl;
bv->newFile(name, tmpname);
}
// Insert ascii file (if filename is empty, prompt for one)
void InsertAsciiFile(BufferView * bv, string const & f, bool asParagraph)
{
if (!bv->available())
return;
string const tmpstr = getContentsOfAsciiFile(bv, f, asParagraph);
if (tmpstr.empty())
return;
// clear the selection
if (bv->text == bv->getLyXText())
bv->text->clearSelection();
if (asParagraph)
bv->getLyXText()->insertStringAsParagraphs(tmpstr);
else
bv->getLyXText()->insertStringAsLines(tmpstr);
bv->update();
}
// Insert ascii file (if filename is empty, prompt for one)
string getContentsOfAsciiFile(BufferView * bv, string const & f, bool asParagraph)
{
string fname = f;
if (fname.empty()) {
FileDialog fileDlg(_("Select file to insert"),
(asParagraph) ? LFUN_FILE_INSERT_ASCII_PARA : LFUN_FILE_INSERT_ASCII);
FileDialog::Result result = fileDlg.open(bv->owner()->buffer()->filePath());
if (result.first == FileDialog::Later)
return string();
fname = result.second;
if (fname.empty())
return string();
}
FileInfo fi(fname);
if (!fi.readable()) {
string const error = strerror(errno);
string const file = MakeDisplayPath(fname, 50);
string const text = bformat(_("Could not read the specified document\n"
"%1$s\ndue to the error: %2$s"), file, error);
Alert::error(_("Could not read file"), text);
return string();
}
ifstream ifs(fname.c_str());
if (!ifs) {
string const error = strerror(errno);
string const file = MakeDisplayPath(fname, 50);
string const text = bformat(_("Could not open the specified document\n"
"%1$s\ndue to the error: %2$s"), file, error);
Alert::error(_("Could not open file"), text);
return string();
}
ifs.unsetf(ios::skipws);
istream_iterator<char> ii(ifs);
istream_iterator<char> end;
#if !defined(USE_INCLUDED_STRING) && !defined(STD_STRING_IS_GOOD)
// We use this until the compilers get better...
std::vector<char> tmp;
copy(ii, end, back_inserter(tmp));
string const tmpstr(tmp.begin(), tmp.end());
#else
// This is what we want to use and what we will use once the
// compilers get good enough.
//string tmpstr(ii, end); // yet a reason for using std::string
// alternate approach to get the file into a string:
string tmpstr;
copy(ii, end, back_inserter(tmpstr));
#endif
return tmpstr;
}
string const getPossibleLabel(BufferView const & bv)
{
ParagraphList::iterator pit = bv.getLyXText()->cursorPar();
ParagraphList & plist = bv.getLyXText()->ownerParagraphs();
LyXLayout_ptr layout = pit->layout();
if (layout->latextype == LATEX_PARAGRAPH && pit != plist.begin()) {
ParagraphList::iterator pit2 = boost::prior(pit);
LyXLayout_ptr const & layout2 = pit2->layout();
if (layout2->latextype != LATEX_PARAGRAPH) {
pit = pit2;
layout = layout2;
}
}
string text = layout->latexname().substr(0, 3);
if (layout->latexname() == "theorem")
text = "thm"; // Create a correct prefix for prettyref
text += ':';
if (layout->latextype == LATEX_PARAGRAPH ||
lyxrc.label_init_length < 0)
text.erase();
string par_text = pit->asString(*bv.buffer(), false);
for (int i = 0; i < lyxrc.label_init_length; ++i) {
if (par_text.empty())
break;
string head;
par_text = split(par_text, head, ' ');
// Is it legal to use spaces in labels ?
if (i > 0)
text += '-';
text += head;
}
return text;
}
// This function runs "configure" and then rereads lyx.defaults to
// reconfigure the automatic settings.
void Reconfigure(BufferView * bv)
{
bv->owner()->message(_("Running configure..."));
// Run configure in user lyx directory
Path p(user_lyxdir());
Systemcall one;
one.startscript(Systemcall::Wait,
AddName(system_lyxdir(), "configure"));
p.pop();
bv->owner()->message(_("Reloading configuration..."));
lyxrc.read(LibFileSearch(string(), "lyxrc.defaults"));
Alert::information(_("System reconfigured"),
_("The system has been reconfigured.\n"
"You need to restart LyX to make use of any \n"
"updated document class specifications."));
}