verinec.importer.parser.iptables.parser
Class Lexer

java.lang.Object
  verinec.importer.parser.iptables.parser.Lexer

public class Lexer
extends Object

Lexer for a iptables -vnL command output. This class makes the lecical analysis, devides the String into tokens and creates the list of tokens.

Author:

geraldine.antener at unifr.ch

Nested Class Summary

class

Lexer.CountingTokenizer This tokenizer keeps track of the position of the words.

Field Summary

private static String	EOF End of file identifier.
private int	lineCounter Current line in the input data.
private int	pos Current reading position within the line.
private Lexer.CountingTokenizer	reader The content to analyse.
Vector	tokens The list of tokens
private String	word Current word.

Constructor Summary

Lexer(String content)
Create a new lexer and analyser the content.

Method Summary

private void	addList(String word, String type) Add the word and its type to the list of tokens.
private void	analyse()
private String	typeLastToken() Get the type of the last token in the list.

Methods inherited from class java.lang.Object

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

Field Detail

EOF

private static String EOF

End of file identifier.

tokens

public Vector tokens

The list of tokens

reader

private Lexer.CountingTokenizer reader

The content to analyse.

word

private String word

Current word.

lineCounter

private int lineCounter

Current line in the input data.

pos

private int pos

Current reading position within the line. Denotes the end of the last word token.

Constructor Detail

Lexer

public Lexer(String content)

Create a new lexer and analyser the content.

Parameters:

content - The document to analyser.

Method Detail

analyse

private void analyse()

addList

private void addList(String word,
                     String type)

Add the word and its type to the list of tokens.

Parameters:

word - The text from the tokenizer.

type - The type identifier.

typeLastToken

private String typeLastToken()

Get the type of the last token in the list.

Returns:

Type name of the last token in the list.