1 files changed, 253 insertions, 0 deletions
diff --git a/kdecore/network/kbufferedsocket.h b/kdecore/network/kbufferedsocket.h
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index 000000000..b0b99f8d1
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+++ b/kdecore/network/kbufferedsocket.h
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+/*  -*- C++ -*-
+ *  Copyright (C) 2003 Thiago Macieira <thiago@kde.org>
+ *
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining
+ *  a copy of this software and associated documentation files (the
+ *  "Software"), to deal in the Software without restriction, including
+ *  without limitation the rights to use, copy, modify, merge, publish,
+ *  distribute, sublicense, and/or sell copies of the Software, and to
+ *  permit persons to whom the Software is furnished to do so, subject to
+ *  the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included 
+ *  in all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef KBUFFEREDSOCKET_H
+#define KBUFFEREDSOCKET_H
+
+#include <qobject.h>
+#include <qcstring.h>
+#include <qvaluelist.h>
+#include "kstreamsocket.h"
+#include <kdelibs_export.h>
+
+class KIOBufferBase;
+
+namespace KNetwork {
+
+class KBufferedSocketPrivate;
+/** @class KBufferedSocket kbufferedsocket.h kbufferedsocket.h
+ *  @brief Buffered stream sockets.
+ *
+ * This class allows the user to create and operate buffered stream sockets
+ * such as those used in most Internet connections. This class is
+ * also the one that resembles the most to the old @ref QSocket
+ * implementation.
+ *
+ * Objects of this type operate only in non-blocking mode. A call to
+ * setBlocking(true) will result in an error.
+ *
+ * @note Buffered sockets only make sense if you're using them from
+ *       the main (event-loop) thread. This is actually a restriction
+ *       imposed by Qt's QSocketNotifier. If you want to use a socket
+ *       in an auxiliary thread, please use KStreamSocket.
+ *
+ * @see KNetwork::KStreamSocket, KNetwork::KServerSocket
+ * @author Thiago Macieira <thiago@kde.org>
+ */
+class KDECORE_EXPORT KBufferedSocket: public KStreamSocket
+{
+  Q_OBJECT
+public:
+  /**
+   * Default constructor.
+   *
+   * @param node	destination host
+   * @param service	destination service to connect to
+   * @param parent      the parent object for this object
+   * @param name        the internal name for this object
+   */
+  KBufferedSocket(const QString& node = QString::null, const QString& service = QString::null,
+		  QObject* parent = 0L, const char *name = 0L);
+
+  /**
+   * Destructor.
+   */
+  virtual ~KBufferedSocket();
+
+  /**
+   * Be sure to catch new devices.
+   */
+  virtual void setSocketDevice(KSocketDevice* device);
+
+protected:
+  /**
+   * Buffered sockets can only operate in non-blocking mode.
+   */
+  virtual bool setSocketOptions(int opts);
+
+public:
+  /**
+   * Closes the socket for new data, but allow data that had been buffered
+   * for output with @ref writeBlock to be still be written.
+   *
+   * @sa closeNow
+   */
+  virtual void close();
+
+  /**
+   * Make use of the buffers.
+   */
+  virtual Q_LONG bytesAvailable() const;
+
+  /**
+   * Make use of buffers.
+   */
+  virtual Q_LONG waitForMore(int msecs, bool *timeout = 0L);
+
+  /**
+   * Reads data from the socket. Make use of buffers.
+   */
+  virtual Q_LONG readBlock(char *data, Q_ULONG maxlen);
+
+  /**
+   * @overload
+   * Reads data from a socket.
+   *
+   * The @p from parameter is always set to @ref peerAddress()
+   */
+  virtual Q_LONG readBlock(char *data, Q_ULONG maxlen, KSocketAddress& from);
+
+  /**
+   * Peeks data from the socket.
+   */
+  virtual Q_LONG peekBlock(char *data, Q_ULONG maxlen);
+
+  /**
+   * @overload
+   * Peeks data from the socket.
+   *
+   * The @p from parameter is always set to @ref peerAddress()
+   */
+  virtual Q_LONG peekBlock(char *data, Q_ULONG maxlen, KSocketAddress &from);
+
+  /**
+   * Writes data to the socket.
+   */
+  virtual Q_LONG writeBlock(const char *data, Q_ULONG len);
+
+  /**
+   * @overload
+   * Writes data to the socket.
+   *
+   * The @p to parameter is discarded.
+   */
+  virtual Q_LONG writeBlock(const char *data, Q_ULONG len, const KSocketAddress& to);
+
+  /**
+   * Catch changes.
+   */
+  virtual void enableRead(bool enable);
+
+  /**
+   * Catch changes.
+   */
+  virtual void enableWrite(bool enable);
+
+  /**
+   * Sets the use of input buffering.
+   */
+  void setInputBuffering(bool enable);
+
+  /**
+   * Retrieves the input buffer object.
+   */
+  KIOBufferBase* inputBuffer();
+
+  /**
+   * Sets the use of output buffering.
+   */
+  void setOutputBuffering(bool enable);
+
+  /**
+   * Retrieves the output buffer object.
+   */
+  KIOBufferBase* outputBuffer();
+
+  /**
+   * Returns the length of the output buffer.
+   */
+  virtual Q_ULONG bytesToWrite() const;
+
+  /**
+   * Closes the socket and discards any output data that had been buffered
+   * with @ref writeBlock but that had not yet been written.
+   *
+   * @sa close
+   */
+  virtual void closeNow();
+
+  /**
+   * Returns true if a line can be read with @ref readLine
+   */
+  bool canReadLine() const;
+
+  /**
+   * Reads a line of data from the socket buffers.
+   */
+  QCString readLine();
+
+  // KDE4: make virtual, add timeout to match the Qt4 signature
+  //       and move to another class up the hierarchy
+  /**
+   * Blocks until the connection is either established, or completely
+   * failed.
+   */
+  void waitForConnect();
+
+protected:
+  /**
+   * Catch connection to clear the buffers
+   */
+  virtual void stateChanging(SocketState newState);
+
+protected slots:
+  /**
+   * Slot called when there's read activity.
+   */
+  virtual void slotReadActivity();
+
+  /**
+   * Slot called when there's write activity.
+   */
+  virtual void slotWriteActivity();
+
+signals:
+  /**
+   * This signal is emitted whenever data is written.
+   */
+  void bytesWritten(int bytes);
+
+private:
+  KBufferedSocket(const KBufferedSocket&);
+  KBufferedSocket& operator=(const KBufferedSocket&);
+
+  KBufferedSocketPrivate *d;
+
+public:
+  // KDE4: remove this function
+  /**
+   * @deprecated
+   * Closes the socket.
+   *
+   * This function is provided to ease porting from KExtendedSocket,
+   * which required a call to reset() in order to be able to connect again
+   * using the same device. This is not necessary in KBufferedSocket any more.
+   */
+  inline void reset()
+  { closeNow(); }
+};
+
+}				// namespace KNetwork
+
+#endif