junitutils
Class Diff

java.lang.Object
  junitutils.Diff

public class Diff

extends java.lang.Object

Class for calculating a (somewhat) detailed comparison of two strings.

Version:

$Revision: 1.6 $

Author:

Curtis Clifton

Field Summary

private boolean	_areDifferent This is set to true if the oldText and newText are not the same
private static java.lang.String	DELIM This string holds line delimiters
private java.lang.String	differences This output String holds the description of the differences between the old and new text.
private static java.lang.String	NEW_CH This string is used to mark lines of new text
private static java.lang.String	NEWLINE This is the system new line character
private java.lang.String	newText This is the supplied new text, to be compared against the old text
private static java.lang.String	OLD_CH This string is used to mark lines of old text
private java.lang.String	oldText This is the supplied old text, to be compared against the new text

Constructor Summary

Diff(java.lang.String oldTextLabel, java.lang.String oldText, java.lang.String newTextLabel, java.lang.String newText)
Calculate a difference between the given strings.

Method Summary

boolean	areDifferent() Returns true if strings on which this was constructed are different.
private void	calculate(java.lang.String oldTextLabel, java.lang.String newTextLabel) Sets the values of _areDifferent and differences according to a comparison between oldText and newText
private void	calculateDiffs(java.lang.StringBuffer differencesSB)
java.lang.String	result() Returns the differences between the given strings.
private java.lang.String[]	splitByLine(java.lang.String text)

Methods inherited from class java.lang.Object

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

Field Detail

oldText

private java.lang.String oldText

This is the supplied old text, to be compared against the new text

newText

private java.lang.String newText

This is the supplied new text, to be compared against the old text

_areDifferent

private boolean _areDifferent

This is set to true if the oldText and newText are not the same

differences

private java.lang.String differences

This output String holds the description of the differences between the old and new text.

DELIM

private static final java.lang.String DELIM

This string holds line delimiters

See Also:

Constant Field Values

NEWLINE

private static final java.lang.String NEWLINE

This is the system new line character

OLD_CH

private static final java.lang.String OLD_CH

This string is used to mark lines of old text

See Also:

Constant Field Values

NEW_CH

private static final java.lang.String NEW_CH

This string is used to mark lines of new text

See Also:

Constant Field Values

Constructor Detail

Diff

public Diff(java.lang.String oldTextLabel,
            java.lang.String oldText,
            java.lang.String newTextLabel,
            java.lang.String newText)

Calculate a difference between the given strings.

Parameters:

oldTextLabel - a label for the oldText parameter

oldText - a value to be compared

newTextLabel - a label for the newText parameter

newText - a value to be compared

Method Detail

calculate

private void calculate(java.lang.String oldTextLabel,
                       java.lang.String newTextLabel)

Sets the values of _areDifferent and differences according to a comparison between oldText and newText

Parameters:

oldTextLabel - a label for the oldText parameter

newTextLabel - a label for the newText parameter

calculateDiffs

private void calculateDiffs(java.lang.StringBuffer differencesSB)

splitByLine

private java.lang.String[] splitByLine(java.lang.String text)

areDifferent

public boolean areDifferent()

Returns true if strings on which this was constructed are different.

result

public java.lang.String result()

Returns the differences between the given strings.