edu.illinois.cs.cogcomp.lbjava.parse

Class LineByLine

java.lang.Object

edu.illinois.cs.cogcomp.lbjava.parse.LineByLine

All Implemented Interfaces:

Parser

public abstract class LineByLine
extends Object
implements Parser

This abstract Parser does not define the next() method, but it does define a constructor that opens the specified file and a readLine() method that fetches the next line of text from that file, taking care of exception handling.

Author:

Nick Rizzolo

Field Summary

Fields

Modifier and Type	Field and Description
protected String	fileName The name of the file to parse.
protected BufferedReader	in Reader for file currently being parsed.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LineByLine() Leaves the member variables uninitialized.
	LineByLine(String file) Creates the parser.

Method Summary

Modifier and Type	Method and Description
void	close() Frees any resources this parser may be holding.
protected String	readLine() Reads a line from the current buffer and returns it.
void	reset() Sets this parser back to the beginning of the raw data.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface edu.illinois.cs.cogcomp.lbjava.parse.Parser

next

Field Detail

in

protected BufferedReader in

Reader for file currently being parsed.

fileName

protected String fileName

The name of the file to parse.

Constructor Detail

LineByLine

protected LineByLine()

Leaves the member variables uninitialized.

LineByLine

public LineByLine(String file)

Creates the parser.

Parameters:

file - The name of the file to parse.

Method Detail

readLine

protected String readLine()

Reads a line from the current buffer and returns it. When there are no more lines in the input file, the stream is closed, and null will be returned by this method thereafter. Returned strings do not contain line termination characters.

Returns:

The next line of text from the input file, or null if no more lines remain.

reset

public void reset()

Sets this parser back to the beginning of the raw data.

Specified by:

reset in interface Parser

close

public void close()

Frees any resources this parser may be holding.

Specified by:

close in interface Parser