org.jhotdraw.samples.teddy.regex

Class Matcher

java.lang.Object

org.jhotdraw.samples.teddy.regex.Matcher

public class Matcher
extends java.lang.Object

Searches for an occurence of a case (in)sensitive text on a document. This is a rather slow implementation that does not use advanced techniques such as Boyer-Moore.

Constructor Summary

Constructors

Constructor and Description
Matcher(javax.swing.text.Document document, java.lang.String findString) Creates a new instance of Matcher which performs a case sensitive search.
Matcher(javax.swing.text.Document document, java.lang.String findString, boolean matchCase, MatchType matchType) Creates a new instance of Matcher

Method Summary

Modifier and Type	Method and Description
int	findNext() Attempts to find the next subsequence of the input sequence that matches the pattern.
int	findNext(int startIndex) Resets this matcher and then attempts to find the next subsequence of the input sequence that matches the pattern, starting at the specified index.
int	findPrevious() Attempts to find the previous subsequence of the input sequence that matches the pattern.
int	findPrevious(int startIndex) Resets this matcher and then attempts to find the previous subsequence of the input sequence that matches the pattern, starting at the specified index.
java.lang.String	getFindString()
MatchType	getMatchType()
boolean	isMatchCase()
void	reset() Resets the startIndex of the matcher to 0.
void	setStartIndex(int newValue) Sets the start index for the findNext(), findPrevious() methods.

Methods inherited from class java.lang.Object

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

Constructor Detail

Matcher

public Matcher(javax.swing.text.Document document,
               java.lang.String findString)

Creates a new instance of Matcher which performs a case sensitive search.

Parameters:

document - The document to be examined

findString - The string to be searched.

Matcher

public Matcher(javax.swing.text.Document document,
               java.lang.String findString,
               boolean matchCase,
               MatchType matchType)

Creates a new instance of Matcher

Parameters:

document - The document to be examined

findString - The string to be searched.

matchCase - Set to true for case sensitive search.

matchType - Sets the match type.

Method Detail

getFindString

public java.lang.String getFindString()

isMatchCase

public boolean isMatchCase()

getMatchType

public MatchType getMatchType()

setStartIndex

public void setStartIndex(int newValue)

Sets the start index for the findNext(), findPrevious() methods.

findNext

public int findNext(int startIndex)

Resets this matcher and then attempts to find the next subsequence of the input sequence that matches the pattern, starting at the specified index.

Parameters:

startIndex - the index from which to start the search.

Returns:

the index of the first occurrence of the search string, starting at the specified offset, or -1 if no occurrence was found.

findNext

public int findNext()

Attempts to find the next subsequence of the input sequence that matches the pattern.

This method starts at the beginning of the input sequence or, if a previous invocation of the method was successful and the matcher has not since been reset, at the first character not matched by the previous match.

Returns:

the index of the first occurrence of the search string, starting at the specified offset, or -1 if no occurrence was found.

findPrevious

public int findPrevious(int startIndex)

Resets this matcher and then attempts to find the previous subsequence of the input sequence that matches the pattern, starting at the specified index.

Parameters:

startIndex - the index from which to start the search.

Returns:

the index of the first occurrence of the search string, starting at the specified offset, or -1 if no occurrence was found.

findPrevious

public int findPrevious()

Attempts to find the previous subsequence of the input sequence that matches the pattern.

This method starts at the beginning of the input sequence or, if a previous invocation of the method was successful and the matcher has not since been reset, at the first character not matched by the previous match.

Returns:

the index of the first occurrence of the search string, starting at the specified offset, or -1 if no occurrence was found.

reset

public void reset()

Resets the startIndex of the matcher to 0.