+
+SystemcallPrivate::SystemcallPrivate(const std::string& of) :
+ process_(new QProcess),
+ out_index_(0),
+ err_index_(0),
+ out_file_(of),
+ process_events_(false)
+{
+ if (!out_file_.empty()) {
+ // Check whether we have to simply throw away the output.
+ if (out_file_ != os::nulldev())
+ process_->setStandardOutputFile(QString::fromLocal8Bit(out_file_.c_str()));
+ }
+
+ connect(process_, SIGNAL(readyReadStandardOutput()), SLOT(stdOut()));
+ connect(process_, SIGNAL(readyReadStandardError()), SLOT(stdErr()));
+ connect(process_, SIGNAL(error(QProcess::ProcessError)), SLOT(processError(QProcess::ProcessError)));
+ connect(process_, SIGNAL(started()), this, SLOT(processStarted()));
+ connect(process_, SIGNAL(finished(int, QProcess::ExitStatus)), SLOT(processFinished(int, QProcess::ExitStatus)));
+}
+
+
+void SystemcallPrivate::startProcess(QString const & cmd, string const & path)
+{
+ cmd_ = cmd;
+ if (process_) {
+ state = SystemcallPrivate::Starting;
+ process_->start(toqstr(latexEnvCmdPrefix(path)) + cmd_);
+ }
+}
+
+
+void SystemcallPrivate::processEvents()
+{
+ if(process_events_) {
+ QCoreApplication::processEvents(/*QEventLoop::ExcludeUserInputEvents*/);
+ }
+}
+
+
+void SystemcallPrivate::waitAndProcessEvents()
+{
+ Sleep::millisec(100);
+ processEvents();
+}
+
+
+bool SystemcallPrivate::waitWhile(State waitwhile, bool process_events, int timeout)
+{
+ if (!process_)
+ return false;
+
+ process_events_ = process_events;
+
+ // Block GUI while waiting,
+ // relay on QProcess' wait functions
+ if (!process_events_) {
+ if (waitwhile == Starting)
+ return process_->waitForStarted(timeout);
+ if (waitwhile == Running)
+ return process_->waitForFinished(timeout);
+ return false;
+ }
+
+ // process events while waiting, no timeout
+ if (timeout == -1) {
+ while (state == waitwhile && state != Error) {
+ waitAndProcessEvents();
+ }
+ return state != Error;
+ }
+
+ // process events while waiting whith timeout
+ QTime timer;
+ timer.start();
+ while (state == waitwhile && state != Error && timer.elapsed() < timeout) {
+ waitAndProcessEvents();
+ }
+ return (state != Error) && (timer.elapsed() < timeout);
+}
+
+
+SystemcallPrivate::~SystemcallPrivate()
+{
+ if (out_index_) {
+ out_data_[out_index_] = '\0';
+ out_index_ = 0;
+ cout << out_data_;
+ }
+ cout.flush();
+ if (err_index_) {
+ err_data_[err_index_] = '\0';
+ err_index_ = 0;
+ cerr << err_data_;
+ }
+ cerr.flush();
+
+ killProcess();
+}
+
+
+void SystemcallPrivate::stdOut()
+{
+ if (process_) {
+ char c;
+ process_->setReadChannel(QProcess::StandardOutput);
+ while (process_->getChar(&c)) {
+ out_data_[out_index_++] = c;
+ if (c == '\n' || out_index_ + 1 == buffer_size_) {
+ out_data_[out_index_] = '\0';
+ out_index_ = 0;
+ ProgressInterface::instance()->appendMessage(QString::fromLocal8Bit(out_data_));
+ cout << out_data_;
+ }
+ }
+ }
+}
+
+
+void SystemcallPrivate::stdErr()
+{
+ if (process_) {
+ char c;
+ process_->setReadChannel(QProcess::StandardError);
+ while (process_->getChar(&c)) {
+ err_data_[err_index_++] = c;
+ if (c == '\n' || err_index_ + 1 == buffer_size_) {
+ err_data_[err_index_] = '\0';
+ err_index_ = 0;
+ ProgressInterface::instance()->appendError(QString::fromLocal8Bit(err_data_));
+ cerr << err_data_;
+ }
+ }
+ }
+}
+
+
+void SystemcallPrivate::processStarted()
+{
+ if (state != Running) {
+ state = Running;
+ ProgressInterface::instance()->processStarted(cmd_);
+ }
+}
+
+
+void SystemcallPrivate::processFinished(int, QProcess::ExitStatus)
+{
+ if (state != Finished) {
+ state = Finished;
+ ProgressInterface::instance()->processFinished(cmd_);
+ }
+}
+
+
+void SystemcallPrivate::processError(QProcess::ProcessError)
+{
+ state = Error;
+ ProgressInterface::instance()->appendError(errorMessage());
+}
+
+
+QString SystemcallPrivate::errorMessage() const
+{
+ if (!process_)
+ return "No QProcess available";
+
+ QString message;
+ switch (process_->error()) {
+ case QProcess::FailedToStart:
+ message = "The process failed to start. Either the invoked program is missing, "
+ "or you may have insufficient permissions to invoke the program.";
+ break;
+ case QProcess::Crashed:
+ message = "The process crashed some time after starting successfully.";
+ break;
+ case QProcess::Timedout:
+ message = "The process timed out. It might be restarted automatically.";
+ break;
+ case QProcess::WriteError:
+ message = "An error occurred when attempting to write to the process-> For example, "
+ "the process may not be running, or it may have closed its input channel.";
+ break;
+ case QProcess::ReadError:
+ message = "An error occurred when attempting to read from the process-> For example, "
+ "the process may not be running.";
+ break;
+ case QProcess::UnknownError:
+ default:
+ message = "An unknown error occured.";
+ break;
+ }
+ return message;
+}
+
+
+QString SystemcallPrivate::exitStatusMessage() const
+{
+ if (!process_)
+ return "No QProcess available";
+
+ QString message;
+ switch (process_->exitStatus()) {
+ case QProcess::NormalExit:
+ message = "The process exited normally.";
+ break;
+ case QProcess::CrashExit:
+ message = "The process crashed.";
+ break;
+ default:
+ message = "Unknown exit state.";
+ break;
+ }
+ return message;
+}
+
+
+int SystemcallPrivate::exitCode()
+{
+ if (!process_)
+ return -1;
+
+ return process_->exitCode();
+}
+
+
+QProcess* SystemcallPrivate::releaseProcess()
+{
+ QProcess* released = process_;
+ process_ = 0;
+ return released;
+}
+
+
+void SystemcallPrivate::killProcess()
+{
+ killProcess(process_);
+}
+
+
+void SystemcallPrivate::killProcess(QProcess * p)
+{
+ if (p) {
+ p->disconnect();
+ p->closeReadChannel(QProcess::StandardOutput);
+ p->closeReadChannel(QProcess::StandardError);
+ p->close();
+ delete p;
+ }
+}
+
+
+
+#include "moc_SystemcallPrivate.cpp"
+#endif
+