1 files changed, 92 insertions, 0 deletions
diff --git a/lib/util/blockingkprocess.h b/lib/util/blockingkprocess.h
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+++ b/lib/util/blockingkprocess.h
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+
+/***************************************************************************
+*   Copyright (C) 2006 by Andras Mantia                                   *
+*   amantia@kde.org                                                       *
+*                                                                         *
+*   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.                                   *
+*                                                                         *
+***************************************************************************/
+
+
+#ifndef BLOCKINGKPROCESS_H
+#define BLOCKINGKPROCESS_H
+
+#include <kprocess.h>
+
+/**
+ *  Blocking version of KProcess, which stores the stdout.
+ *  Differences between start(KProcess::Block, KProcess::StdOut) and this
+ *  class are:
+ *  - the GUI update is not blocked why the external process is running
+ *  - in case of problems there is a timeout (defaults to 60 seconds), after which the 
+ *    process is terminated.
+ *  - the stdout is caught - it the caller request it - and can be read by the caller
+ * @author Andras Mantia <amantia@kde.org>
+*/
+
+class QTimer;
+class BlockingKProcess : public KProcess
+{
+  Q_OBJECT
+  
+public:
+    BlockingKProcess(QObject *parent, const char *name=0);
+    BlockingKProcess();
+
+    virtual ~BlockingKProcess();
+    
+    /**
+     * Start the process. It waits until the process exits or the timeout is hit.
+     * @param runmode @see KProcess, use KProcess::NotifyOnExit to get proper behaviour,
+     * not KProcess::Block
+     * @param comm if Stdout is passed, it catches the output. For the rest @see KProcess
+     * @return true in case of success, false if there are problems to start the process
+     *        or it was killed because of the timeout.
+     */
+    virtual bool start(RunMode runmode=NotifyOnExit, Communication comm=NoCommunication);
+  
+    /**
+     * Get the output of the run process
+     * @return the output
+     */
+    QString stdOut() { return m_stdOut;}
+    /**
+     * Clear the internal stdout buffer. Useful in case the class is reused.
+     */
+    void clearStdOut() { m_stdOut = "";}
+    /**
+     * Get the error output of the run process
+     * @return the output
+     */
+    QString stdErr() { return m_stdErr;}
+    /**
+     * Clear the internal stderr buffer. Useful in case the class is reused.
+     */
+    void clearStdErr() { m_stdErr = "";}
+
+    /**
+     * Sets the timeout
+     * @param timeout seconds after which the process is considered hung and killed. 0 disables the timeout.
+     */
+    void setTimeOut(int timeout) { m_timeoutValue = timeout; }
+    
+private slots:
+    void slotReceivedStdOut(KProcess *proc, char *buffer, int buflen);
+    void slotReceivedStdErr(KProcess *proc, char *buffer, int buflen);
+    void slotProcessExited(KProcess *proc);
+    void slotTimeOut();
+            
+private:
+    void enter_loop();
+        
+    QString m_stdOut;   
+    QString m_stdErr;   
+    bool m_timeout;     
+    int m_timeoutValue;
+    QTimer *m_timer;
+};
+
+#endif