class LineNumberReader

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acdk::io::LineNumberReader Class Reference

#include <LineNumberReader.h>

Inheritance diagram for acdk::io::LineNumberReader:

List of all members.

Detailed Description

A filter reader provides information about line and column of current read position.

See also:: acdk::io::LineNumberCharReader for character based LineNumberReader

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

Version:

Revision: 1.15

Date:

Date: 2005/04/09 19:26:45

Public Member Functions

LineNumberReader (IN(RReader) in, IN(acdk::lang::Object) lock=Nil)

virtual int getLineNumber ()

return the line number of current read position

virtual void setLineNumber (int ln)

virtual void mark (int readlimit)

virtual void reset ()

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

virtual int read ()

read a single byte from stream

virtual int read (IN(RbyteArray) buffer, 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)

int getXPos ()

return the column position

int getBytePos ()

provides information of current readed byte position

Protected Attributes

int _charPos

int _markedCharPos

int _lineNumber

int _markedLineNumber

int _xPos

int _markedXPos

byte _eof

0 not eof, 1 at eof 2 behind eof

Private Member Functions

int _read ()

Constructor & Destructor Documentation

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

IN(acdk::lang::Object) lock = Nil

)

Member Function Documentation

int acdk::io::LineNumberReader::_read ( ) [private]

int acdk::io::LineNumberReader::getBytePos ( ) [inline]

provides information of current readed byte position

virtual int acdk::io::LineNumberReader::getLineNumber ( ) [inline, virtual]

return the line number of current read position

int acdk::io::LineNumberReader::getXPos ( ) [inline]

return the column position

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

Reimplemented from acdk::io::AbstractFilterReader.

virtual int acdk::io::LineNumberReader::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::LineNumberReader::read ( IN(RbyteArray) buffer,

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

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

Reimplemented from acdk::io::AbstractFilterReader.

virtual void acdk::io::LineNumberReader::setLineNumber ( int ln ) [inline, virtual]

Member Data Documentation

int acdk::io::LineNumberReader::_charPos [protected]

byte acdk::io::LineNumberReader::_eof [protected]

0 not eof, 1 at eof 2 behind eof

int acdk::io::LineNumberReader::_lineNumber [protected]

int acdk::io::LineNumberReader::_markedCharPos [protected]

int acdk::io::LineNumberReader::_markedLineNumber [protected]

int acdk::io::LineNumberReader::_markedXPos [protected]

int acdk::io::LineNumberReader::_xPos [protected]