added muSR data run header information dump to musredit

src/musredit/PDumpOutputHandler.cpp

@@ -0,0 +1,158 @@
+/****************************************************************************
+
+  PDumpOutputHandler.cpp
+
+  Author: Andreas Suter
+  e-mail: andreas.suter@psi.ch
+
+  $Id$
+
+*****************************************************************************/
+
+/***************************************************************************
+ *   Copyright (C) 2012 by Andreas Suter                                   *
+ *   andreas.suter@psi.ch                                                  *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#include <QTimer>
+
+#include <QtDebug>
+
+#include "PDumpOutputHandler.h"
+
+//----------------------------------------------------------------------------------------------------
+/**
+ * <p>Sets up the dump output handler GUI and starts the actual dump_header command
+ *
+ * \param cmd command string vector. From this the actual dump_header command will be generated and executed.
+ */
+PDumpOutputHandler::PDumpOutputHandler(QVector<QString> &cmd)
+{
+  if (cmd.empty())
+    return;
+
+  // Layout
+  fVbox = new QVBoxLayout( this );
+  fOutput = new QTextEdit();
+  fVbox->addWidget(fOutput);
+  fOutput->setMinimumSize(600, 755);
+  fOutput->setReadOnly(true);
+  connect( fOutput, SIGNAL( destroyed() ), this, SLOT( quitButtonPressed() ) );
+  fQuitButton = new QPushButton( tr("Quit") );
+  fVbox->addWidget(fQuitButton);
+  connect( fQuitButton, SIGNAL( clicked() ), this, SLOT( quitButtonPressed() ) );
+  resize( 600, 800 );
+  fQuitButton->setFocus();
+
+  // QProcess related code
+  fProc = new QProcess( this );
+
+//  fProc->setWorkingDirectory(workingDirectory);
+
+  // Set up the command and arguments.
+  QString program = cmd[0];
+  QStringList arguments;
+  for (int i=1; i<cmd.size(); i++)
+    arguments << cmd[i];
+
+  connect( fProc, SIGNAL( readyReadStandardOutput() ), this, SLOT( readFromStdOut() ) );
+  connect( fProc, SIGNAL( readyReadStandardError() ), this, SLOT( readFromStdErr() ) );
+//  connect( fProc, SIGNAL( finished(int, QProcess::ExitStatus) ),   this, SLOT( processDone(int, QProcess::ExitStatus) ) );
+
+  fProc->start(program, arguments);
+  if ( !fProc->waitForStarted() ) {
+    // error handling
+    QString msg(tr("Could not execute the output command: ")+cmd[0]);
+    QMessageBox::critical( 0,
+                tr("Fatal error"),
+                msg,
+                tr("Quit") );
+    done(0);
+  }
+  fProcPID = fProc->pid();
+}
+
+//----------------------------------------------------------------------------------------------------
+/**
+ * <p>Destructor. Checks if the a dump_header is still running and if yes try to kill it.
+ */
+PDumpOutputHandler::~PDumpOutputHandler()
+{
+  if (fProc->state() == QProcess::Running) {
+    fProc->terminate();
+    if (!fProc->waitForFinished()) {
+      qDebug() << "fProc still running, will call kill." << endl;
+      fProc->kill();
+    }
+    fProc->waitForFinished();
+  }
+  if (fProc->state() == QProcess::Running) {
+    QString cmd = "kill -9 "+ fProcPID;
+    QString msg = "fProc still running even after Qt kill, will try system kill cmd: "+cmd;
+    qDebug() << msg << endl;
+    system(cmd.toLatin1());
+  }
+  if (fProc) {
+    delete fProc;
+    fProc = 0;
+  }
+}
+
+//----------------------------------------------------------------------------------------------------
+/**
+ * <p>Captures the standard output and adds it to the output text edit.
+ */
+void PDumpOutputHandler::readFromStdOut()
+{
+  // Read and process the data.
+  // Bear in mind that the data might be output in chunks.
+  fOutput->append( fProc->readAllStandardOutput() );
+}
+
+//----------------------------------------------------------------------------------------------------
+/**
+ * <p>Captures the standard error and adds it to the output text edit.
+ */
+void PDumpOutputHandler::readFromStdErr()
+{
+  // Read and process the data.
+  // Bear in mind that the data might be output in chunks.
+  fOutput->append( fProc->readAllStandardError() );
+}
+
+//----------------------------------------------------------------------------------------------------
+/**
+ * <p>If the quit button is pressed while the dump_header is still running, try to terminate dump_header, if this
+ * does not work, try to kill dump_header.
+ */
+void PDumpOutputHandler::quitButtonPressed()
+{
+  // if the fitting is still taking place, kill it
+  if (fProc->state() == QProcess::Running) {
+    fProc->terminate();
+    if (!fProc->waitForFinished()) {
+      fProc->kill();
+    }
+  }
+
+  accept();
+}
+
+//----------------------------------------------------------------------------------------------------
+// END
+//----------------------------------------------------------------------------------------------------