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 "buffer_funcs.h"
#include "cursor.h"
#include "CutAndPaste.h"
#include "debug.h"
#include "gettext.h"
#include "session.h"
#include "LaTeXFeatures.h"
#include "lyx_main.h"
#include "lyxlayout.h"
#include "lyxrc.h"
#include "lyxtext.h"
#include "paragraph.h"
#include "undo.h"
#include "frontends/Alert.h"
#include "frontends/Application.h"
#include "frontends/FileDialog.h"
#include "frontends/LyXView.h"
#include "support/filefilterlist.h"
#include "support/filetools.h"
#include "support/forkedcall.h"
#include "support/fs_extras.h"
#include "support/lyxlib.h"
#include "support/package.h"
#include "support/path.h"
#include "support/systemcall.h"
#if !defined (HAVE_FORK)
# define fork() -1
#endif
#include <boost/shared_ptr.hpp>
#include <boost/filesystem/operations.hpp>
#include <cerrno>
#include <fstream>
namespace lyx {
using support::bformat;
using support::FileFilterList;
using support::FileName;
using support::ForkedProcess;
using support::isLyXFilename;
using support::libFileSearch;
using support::makeAbsPath;
using support::makeDisplayPath;
using support::onlyFilename;
using support::onlyPath;
using support::package;
using support::removeAutosaveFile;
using support::rename;
using support::split;
using support::Systemcall;
using support::tempName;
using support::unlink;
using boost::shared_ptr;
namespace Alert = frontend::Alert;
namespace fs = boost::filesystem;
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;
// 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().session().lastFiles().add(FileName(buffer->fileName()));
return true;
}
// FIXME: we don't tell the user *WHY* the save failed !!
docstring const file = makeDisplayPath(buffer->fileName(), 30);
docstring text = bformat(_("The document %1$s could not be saved.\n\n"
"Do you want to rename the document and try again?"), file);
int const ret = Alert::prompt(_("Rename and save?"),
text, 0, 1, _("&Rename"), _("&Cancel"));
if (ret == 0)
return writeAs(buffer);
return false;
}
bool writeAs(Buffer * buffer, string const & newname)
{
string fname = buffer->fileName();
string const oldname = fname;
if (newname.empty()) {
// FIXME UNICODE
FileDialog fileDlg(_("Choose a filename to save document as"),
LFUN_BUFFER_WRITE_AS,
make_pair(_("Documents|#o#O"), from_utf8(lyxrc.document_path)),
make_pair(_("Templates|#T#t"), from_utf8(lyxrc.template_path)));
if (!isLyXFilename(fname))
fname += ".lyx";
FileFilterList const filter (_("LyX Documents (*.lyx)"));
FileDialog::Result result =
fileDlg.save(from_utf8(onlyPath(fname)),
filter,
from_utf8(onlyFilename(fname)));
if (result.first == FileDialog::Later)
return false;
fname = to_utf8(result.second);
if (fname.empty())
return false;
// Make sure the absolute filename ends with appropriate suffix
fname = makeAbsPath(fname).absFilename();
if (!isLyXFilename(fname))
fname += ".lyx";
} else
fname = newname;
FileName const filename(fname);
if (fs::exists(filename.toFilesystemEncoding())) {
docstring const file = makeDisplayPath(fname, 30);
docstring text = bformat(_("The document %1$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;
}
namespace {
class AutoSaveBuffer : public ForkedProcess {
public:
///
AutoSaveBuffer(BufferView & bv, FileName const & fname)
: bv_(bv), fname_(fname) {}
///
virtual shared_ptr<ForkedProcess> clone() const
{
return shared_ptr<ForkedProcess>(new AutoSaveBuffer(*this));
}
///
int start();
private:
///
virtual int generateChild();
///
BufferView & bv_;
FileName fname_;
};
int AutoSaveBuffer::start()
{
command_ = to_utf8(bformat(_("Auto-saving %1$s"), from_utf8(fname_.absFilename())));
return run(DontWait);
}
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;
FileName const tmp_ret(tempName(FileName(), "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)
// emit message signal.
bv_.buffer()->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->buffer())
return;
if (bv->buffer()->isBakClean() || bv->buffer()->isReadonly()) {
// We don't save now, but we'll try again later
bv->buffer()->resetAutosaveTimers();
return;
}
// emit message signal.
bv->buffer()->message(_("Autosaving current document..."));
// create autosave filename
string fname = bv->buffer()->filePath();
fname += '#';
fname += onlyFilename(bv->buffer()->fileName());
fname += '#';
AutoSaveBuffer autosave(*bv, FileName(fname));
autosave.start();
bv->buffer()->markBakClean();
bv->buffer()->resetAutosaveTimers();
}
//
// 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, ':');
LYXERR(Debug::INFO) << "Arg is " << filename
<< "\nName is " << name
<< "\nTemplate is " << tmpname << endl;
Buffer * const b = newFile(name, tmpname);
if (b)
bv->setBuffer(b);
}
// Insert plain text file (if filename is empty, prompt for one)
void insertPlaintextFile(BufferView * bv, string const & f, bool asParagraph)
{
if (!bv->buffer())
return;
docstring const tmpstr = getContentsOfPlaintextFile(bv, f, asParagraph);
if (tmpstr.empty())
return;
LCursor & cur = bv->cursor();
cap::replaceSelection(cur);
recordUndo(cur);
if (asParagraph)
cur.innerText()->insertStringAsParagraphs(cur, tmpstr);
else
cur.innerText()->insertStringAsLines(cur, tmpstr);
}
docstring const getContentsOfPlaintextFile(BufferView * bv, string const & f,
bool asParagraph)
{
FileName fname(f);
if (fname.empty()) {
FileDialog fileDlg(_("Select file to insert"),
(asParagraph) ? LFUN_FILE_INSERT_PLAINTEXT_PARA : LFUN_FILE_INSERT_PLAINTEXT);
FileDialog::Result result =
fileDlg.open(from_utf8(bv->buffer()->filePath()),
FileFilterList(), docstring());
if (result.first == FileDialog::Later)
return docstring();
fname = makeAbsPath(to_utf8(result.second));
if (fname.empty())
return docstring();
}
if (!fs::is_readable(fname.toFilesystemEncoding())) {
docstring const error = from_ascii(strerror(errno));
docstring const file = makeDisplayPath(fname.absFilename(), 50);
docstring const text = bformat(_("Could not read the specified document\n"
"%1$s\ndue to the error: %2$s"), file, error);
Alert::error(_("Could not read file"), text);
return docstring();
}
ifstream ifs(fname.toFilesystemEncoding().c_str());
if (!ifs) {
docstring const error = from_ascii(strerror(errno));
docstring const file = makeDisplayPath(fname.absFilename(), 50);
docstring const text = bformat(_("Could not open the specified document\n"
"%1$s\ndue to the error: %2$s"), file, error);
Alert::error(_("Could not open file"), text);
return docstring();
}
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
// FIXME UNICODE: We don't know the encoding of the file
return normalize_kc(from_utf8(tmpstr));
}
// This function runs "configure" and then rereads lyx.defaults to
// reconfigure the automatic settings.
void reconfigure(LyXView & lv)
{
// emit message signal.
lv.message(_("Running configure..."));
// Run configure in user lyx directory
support::Path p(package().user_support());
string const configure_command = package().configure_command();
Systemcall one;
one.startscript(Systemcall::Wait, configure_command);
p.pop();
// emit message signal.
lv.message(_("Reloading configuration..."));
lyxrc.read(libFileSearch(string(), "lyxrc.defaults"));
// Re-read packages.lst
LaTeXFeatures::getAvailable();
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."));
}
} // namespace lyx