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#ifndef KBUFFEREDIO_H
00022
#define KBUFFEREDIO_H
00023
00024
#include <qcstring.h>
00025
#include <qptrlist.h>
00026
#include "kasyncio.h"
00027
00028
class KBufferedIOPrivate;
00056 class KDECORE_EXPORT KBufferedIO:
public KAsyncIO
00057 {
00058 Q_OBJECT
00059
00060
protected:
00061
00062 KBufferedIO();
00063
00064
public:
00068 enum closeModes
00069 {
00070 availRead = 0x01,
00071 dirtyWrite = 0x02,
00072 involuntary = 0x10,
00073 delayed = 0x20,
00074 closedNow = 0x40
00075 };
00076
00081
virtual ~KBufferedIO();
00082
00091
virtual void closeNow() = 0;
00092
00114
virtual bool setBufferSize(
int rsize,
int wsize = -2);
00115
00120
virtual int bytesAvailable() const;
00121
00128 virtual
int waitForMore(
int msec) = 0;
00129
00134 virtual
int bytesToWrite() const;
00135
00144 virtual
bool canReadLine() const;
00145
00146
00147
00148
00149
00150
00151
00152
00165 virtual
int peekBlock(
char *data, uint maxlen) = 0;
00166
00179 virtual
int unreadBlock(const
char *data, uint len);
00180
00181 signals:
00186
void bytesWritten(
int nbytes);
00187
00188
00189
00190
00205
void closed(
int state);
00206
00207 protected:
00212 QPtrList<
QByteArray> inBuf;
00213
00218 QPtrList<
QByteArray> outBuf;
00219
00220
unsigned inBufIndex, outBufIndex;
00221
00232 virtual
unsigned consumeReadBuffer(
unsigned nbytes,
char *destbuffer,
bool discard = true);
00233
00245 virtual
void consumeWriteBuffer(
unsigned nbytes);
00246
00258 virtual
unsigned feedReadBuffer(
unsigned nbytes, const
char *buffer,
bool atBeginning = false);
00259
00268 virtual
unsigned feedWriteBuffer(
unsigned nbytes, const
char *buffer);
00269
00274 virtual
unsigned readBufferSize() const;
00275
00280 virtual
unsigned writeBufferSize() const;
00281
00282 protected:
00283 virtual
void virtual_hook(
int id,
void* data );
00284 private:
00285 KBufferedIOPrivate *d;
00286 };
00287
00288 #endif