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+/*
+ * Copyright (C) 2008 Rolf Eike Beer <[email protected]>
+ */
+
+/***************************************************************************
+ * *
+ * 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 KLINEBUFFEREDPROCESS_H
+#define KLINEBUFFEREDPROCESS_H
+
+#include "kprocess.h"
+
+class QByteArray;
+//class KLineBufferedProcessPrivate;
+class KLineBufferedProcess;
+class KLineBufferedProcessPrivate
+{
+public:
+ KLineBufferedProcessPrivate(KLineBufferedProcess *parent);
+
+//private slot implementations
+ void _k_receivedStdout();
+ void _k_receivedStderr();
+
+ QByteArray m_stdoutBuffer;
+ QByteArray m_stderrBuffer;
+ int m_newlineInStdout;
+ int m_newlineInStderr;
+ KLineBufferedProcess * const m_parent;
+ const QByteArray m_lineEnd;
+};
+
+/**
+ * Read output of a process split into lines
+ *
+ * This class reads the output of a process and splits it up into lines. This
+ * is especially useful if you try to parse the output of a command line tool.
+ *
+ * \b Usage \n
+ *
+ * The class is created and set up like a KProcess. After this you can do
+ * something like this:
+ *
+ * \code
+ * connect(m_linebufprocess, SIGNAL(lineReadyStandardOutput()), SLOT(dataStdout()));
+ * ...
+ * void myobj::dataStdout()
+ * {
+ * while (m_linebufprocess->hasLineStandardOutput()) {
+ * QByteArray line;
+ * m_linebufprocess->readLineStandardOutput(line);
+ * ...
+ * }
+ * }
+ * \endcode
+ *
+ * Never use the read functionality of KProcess with this class. This class
+ * needs to read all data from the process into an internal buffer first. If
+ * you try to use the read functions of the parent classes you would normally
+ * get no output at all.
+ *
+ * The write functions of the parent classes are not effected. You can use
+ * them exactly the same way as in KProcess.
+ *
+ * @author Rolf Eike Beer
+ */
+class KLineBufferedProcess : public KProcess
+{
+ Q_OBJECT
+ friend class KLineBufferedProcessPrivate;
+
+public:
+ /**
+ * Constructor
+ */
+ explicit KLineBufferedProcess(QObject *parent = 0);
+
+ /**
+ * Destructor
+ */
+ ~KLineBufferedProcess();
+
+ /**
+ * Reads a line of text (excluding '\\n') from stdout.
+ *
+ * Use readLineStdout() in response to a lineReadyStdout() signal or
+ * when hasLineStdout() returns true. You may use it multiple times if
+ * more than one line of data is available. If no complete line is
+ * available the content of line is undefined and the function returns
+ * false.
+ *
+ * @param line is used to store the line that was read.
+ * @return if data was read or not
+ */
+ bool readLineStandardOutput(QByteArray *line);
+
+ /**
+ * Reads a line of text (excluding '\\n') from stderr.
+ *
+ * Use readLineStderr() in response to a lineReadyStderr() signal or
+ * when hasLineStderr() returns true. You may use it multiple times if
+ * more than one line of data is available. If no complete line is
+ * available the content of line is undefined and the function returns
+ * false.
+ *
+ * @param line is used to store the line that was read.
+ * @return if data was read or not
+ */
+ bool readLineStandardError(QByteArray *line);
+
+ /**
+ * Checks if a line is ready on stdout
+ *
+ * @return true if a complete line can be read
+ */
+ bool hasLineStandardOutput() const;
+
+ /**
+ * Checks if a line is ready on stdout
+ *
+ * @return true if a complete line can be read
+ */
+ bool hasLineStandardError() const;
+
+signals:
+ /**
+ * Emitted when there is a line of data available from stdout when there was
+ * previously none.
+ * There may or may not be more than one line available for reading when this
+ * signal is emitted.
+ */
+ void lineReadyStandardOutput();
+
+ /**
+ * Emitted when there is a line of data available from stderr when there was
+ * previously none.
+ * There may or may not be more than one line available for reading when this
+ * signal is emitted.
+ */
+ void lineReadyStandardError();
+
+private:
+ KLineBufferedProcessPrivate* const d;
+
+ Q_PRIVATE_SLOT(d, void _k_receivedStdout())
+ Q_PRIVATE_SLOT(d, void _k_receivedStderr())
+};
+
+#endif // KLINEBUFFEREDPROCESS_H