class BufferedReader

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acdk::io::BufferedReader Class Reference

#include <BufferedReader.h>

Inheritance diagram for acdk::io::BufferedReader:

List of all members.

Detailed Description

Buffers input from a given Reader API: ACDK

Author:: Roger Rene Kommer (mailto:kommer@artefaktur.com)

Version:

Revision: 1.13

Date:

Date: 2005/04/09 19:26:44

Public Member Functions

BufferedReader (IN(RReader) in, int buffsize=BufferedReader::DEFAULT_BUFFER_SIZE)

virtual void close ()

closes this Reader.

virtual int available ()

returns the number of bytes available in this stream before blocking Some Reader always return 0

virtual jlong seek (SeekPos seekrel, jlong seekpos)

Set stream position in this Reader to given position.

virtual void mark (int readlimit)

virtual bool markSupported ()

virtual void reset ()

if mark is set, set stream to mark point otherwise to begin of this stream.

virtual bool ready ()

virtual jlong skip (jlong num_bytes)

Move forwart into the stream.

virtual int read ()

read a single byte from stream

virtual int read (IN(RbyteArray) buf, int offset=0, int len=-1)

read the len bytes into buffer at offset of the buffer

virtual int read (byte *buffer, int offset, int len)

Protected Attributes

RbyteArray _buffer

int _count

int _pos

int _markpos

int _marklimit

RbyteArray _markbuf

transient int _markbufpos

transient int _markbufcount

transient bool _doing_reset

transient bool _primed

transient bool _eof

Static Protected Attributes

int DEFAULT_BUFFER_SIZE

Private Member Functions

void _fillBuffer ()

Constructor & Destructor Documentation

acdk::io::BufferedReader::BufferedReader ( IN(RReader) in,

int buffsize = BufferedReader::DEFAULT_BUFFER_SIZE

)

Member Function Documentation

void acdk::io::BufferedReader::_fillBuffer ( ) [private]

virtual int acdk::io::BufferedReader::available ( ) [virtual]

returns the number of bytes available in this stream before blocking Some Reader always return 0

Reimplemented from acdk::io::AbstractFilterReader.

virtual void acdk::io::BufferedReader::close ( ) [inline, virtual]

closes this Reader.
Note: Some Reader must be closed explicitaly Note: Reader implementation must be avare from closing a reader more than one
Reimplemented from acdk::io::AbstractFilterReader.

virtual void acdk::io::BufferedReader::mark ( int readlimit ) [virtual]

Reimplemented from acdk::io::AbstractFilterReader.

virtual bool acdk::io::BufferedReader::markSupported ( ) [inline, virtual]

Reimplemented from acdk::io::AbstractFilterReader.

virtual int acdk::io::BufferedReader::read ( byte * buffer,

int offset,

int len

) [inline, virtual]

See also:
other read(RbyteArray, int, int)

Reimplemented from acdk::io::AbstractFilterReader.

virtual int acdk::io::BufferedReader::read ( IN(RbyteArray) buf,

int offset = 0,

int len = -1

) [virtual]

read the len bytes into buffer at offset of the buffer

Parameters:

buffer where to write the bytes

offset offset to write into buffer

len how many bytes to read. if == -1 read into many bytes, that fits into buffer (buffer->length() - offset) ``

Returns:
number of bytes readed. may less than input if EOS is reached

Exceptions:

EOF exception, if trying to read behind EOS

Reimplemented from acdk::io::AbstractFilterReader.

virtual int acdk::io::BufferedReader::read ( ) [virtual]

read a single byte from stream

Returns:
the byte readed or -1 if EOS.

Exceptions:

EOF exception, if trying to read behind EOS

Reimplemented from acdk::io::AbstractFilterReader.

virtual bool acdk::io::BufferedReader::ready ( ) [virtual]

Returns:
true, if at least 1 byte can be readed from stream

Reimplemented from acdk::io::AbstractFilterReader.

virtual void acdk::io::BufferedReader::reset ( ) [virtual]

if mark is set, set stream to mark point otherwise to begin of this stream.

Reimplemented from acdk::io::AbstractFilterReader.

virtual jlong acdk::io::BufferedReader::seek ( SeekPos seekrel,

jlong seekpos

) [inline, virtual]

Set stream position in this Reader to given position.

Returns:
the absolute position in this stream

Reimplemented from acdk::io::AbstractFilterReader.

virtual jlong acdk::io::BufferedReader::skip ( jlong num_bytes ) [virtual]

Move forwart into the stream.

Returns:
how many bytes skipped. May less then input, in case EOS is reached

Reimplemented from acdk::io::AbstractFilterReader.

Member Data Documentation

RbyteArray acdk::io::BufferedReader::_buffer [protected]

int acdk::io::BufferedReader::_count [protected]

transient bool acdk::io::BufferedReader::_doing_reset [protected]

transient bool acdk::io::BufferedReader::_eof [protected]

RbyteArray acdk::io::BufferedReader::_markbuf [protected]

transient int acdk::io::BufferedReader::_markbufcount [protected]

transient int acdk::io::BufferedReader::_markbufpos [protected]

int acdk::io::BufferedReader::_marklimit [protected]

int acdk::io::BufferedReader::_markpos [protected]

int acdk::io::BufferedReader::_pos [protected]

transient bool acdk::io::BufferedReader::_primed [protected]

int acdk::io::BufferedReader::DEFAULT_BUFFER_SIZE [static, protected]