}
-
-namespace {
-
-class AutoSaveBuffer : public ForkedProcess {
-public:
- ///
- AutoSaveBuffer(Buffer const & buffer, FileName const & fname)
- : buffer_(buffer), fname_(fname) {}
- ///
- virtual shared_ptr<ForkedProcess> clone() const
- {
- return make_shared<AutoSaveBuffer>(*this);
- }
- ///
- int start()
- {
- command_ = to_utf8(bformat(_("Auto-saving %1$s"),
- from_utf8(fname_.absFileName())));
- return run(DontWait);
- }
-private:
- ///
- virtual int generateChild();
- ///
- Buffer const & buffer_;
- FileName fname_;
-};
-
-
-int AutoSaveBuffer::generateChild()
-{
-#if defined(__APPLE__)
- /* FIXME fork() is not usable for autosave on Mac OS X 10.6 (snow leopard)
- * We should use something else like threads.
- *
- * Since I do not know how to determine at run time what is the OS X
- * version, I just disable forking altogether for now (JMarc)
- */
- pid_t const pid = -1;
-#else
- // tmp_ret will be located (usually) in /tmp
- // will that be a problem?
- // Note that this calls ForkedCalls::fork(), so it's
- // ok cross-platform.
- 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)
- return pid;
-#endif
-
- // pid = -1 signifies that lyx was unable
- // to fork. But we will do the save
- // anyway.
- bool failed = false;
- TempFile tempfile("lyxautoXXXXXX.lyx");
- tempfile.setAutoRemove(false);
- FileName const tmp_ret = tempfile.name();
- if (!tmp_ret.empty()) {
- if (!buffer_.writeFile(tmp_ret))
- failed = true;
- else if (!tmp_ret.moveTo(fname_))
- failed = true;
- } else
- failed = true;
-
- if (failed) {
- // failed to write/rename tmp_ret so try writing direct
- if (!buffer_.writeFile(fname_)) {
- // It is dangerous to do this in the child,
- // but safe in the parent, so...
- if (pid == -1) // emit message signal.
- buffer_.message(_("Autosave failed!"));
- }
- }
-
- if (pid == 0) // we are the child so...
- _exit(0);
-
- return pid;
-}
-
-} // namespace
-
-
FileName Buffer::getEmergencyFileName() const
{
return FileName(d->filename.absFileName() + ".emergency");