wyvern.kernel.commands.filters
Class UniqFilter

java.lang.Object
  wyvern.kernel.commands.filters.UniqFilter

All Implemented Interfaces:

CommandFilter

public class UniqFilter

extends java.lang.Object

implements CommandFilter

Discards duplicate lines from the output. Usage:

• -d: only prints duplicated lines
• -i: ignores differences in case when comparing
• -u: only prints unique lines

Version:

1.0, Jun 16, 2003

Author:

Steve Yegge

Constructor Summary

UniqFilter()

Method Summary

java.util.ArrayList	filter(java.util.ArrayList lines) Filters the lines.
static void	main(java.lang.String[] args) Tests the filter.
void	parseArguments(java.lang.String verb, java.lang.String args) Parses the arguments to "uniq".
java.lang.String	toString() Returns String representation of this filter.

Methods inherited from class java.lang.Object

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

Constructor Detail

UniqFilter

public UniqFilter()

Method Detail

parseArguments

public void parseArguments(java.lang.String verb,
                           java.lang.String args)

Parses the arguments to "uniq".

Specified by:

parseArguments in interface CommandFilter

Parameters:

verb - the command verb ("uniq").

args - the argument string passed to the command, not including the command verb. Null if no arguments were passed to the filter.

filter

public java.util.ArrayList filter(java.util.ArrayList lines)

Filters the lines.

Specified by:

filter in interface CommandFilter

Parameters:

lines - the event output, broken into lines.

Returns:

a subset of the lines, matched against the argument string.

toString

public java.lang.String toString()

Returns String representation of this filter.

main

public static void main(java.lang.String[] args)

Tests the filter.