ij.util

Class WildcardMatch

java.lang.Object

ij.util.WildcardMatch

public class WildcardMatch
extends Object

This class allows for simple wildcard pattern matching. Possible patterns allow to match single characters ('?') or any count of characters ('*').

Wildcard characters can be escaped (default: by an '\').

This class always matches for the whole word.

Examples:

 WildcardMatch wm = new WildcardMatch();
 System.out.println(wm.match("CfgOptions.class", "C*.class"));    // true
 System.out.println(wm.match("CfgOptions.class", "?gOpti*c?as?"));  // false
 System.out.println(wm.match("CfgOptions.class", "??gOpti*c?ass")); // true
 System.out.println(wm.match("What's this?",       "What\*\?"));          // true
 System.out.println(wm.match("What's this?",       "What*?"));            // true
 System.out.println(wm.match("A \\ backslash", "\*\\\?back*"));   // true
 

Constructor Summary

Constructors

Constructor and Description
WildcardMatch()
WildcardMatch(char singleChar, char multipleChars)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	getCaseSensitive() Returns the current state of case sensitivity.
char	getEscapeChar() Returns the character used to escape the wildcard functionality of a wildcard character.
char	getMultipleWildcardChar() Returns the character used to specify any amount of characters.
char	getSingleWildcardChar() Returns the character used to specify exactly one character.
boolean	match(String s, String pattern) Matches a string against a pattern with wildcards.
void	setCaseSensitive(boolean caseSensitive) Makes pattern matching case insensitive.
void	setEscapeChar(char escapeChar) Sets the new character to be used as an escape character, overriding the the default of '\'.
void	setWildcardChars(char singleChar, char multipleChars) Sets new characters to be used as wildcard characters, overriding the the default of '?' for any single character match and '*' for any amount of characters, including 0 characters.

Methods inherited from class java.lang.Object

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

Constructor Detail

WildcardMatch

public WildcardMatch()

WildcardMatch

public WildcardMatch(char singleChar,
             char multipleChars)

Method Detail

setWildcardChars

public void setWildcardChars(char singleChar,
                    char multipleChars)

Sets new characters to be used as wildcard characters, overriding the the default of '?' for any single character match and '*' for any amount of characters, including 0 characters.

Parameters:

singleChar - The char used to match exactly ONE character.

multipleChars - The char used to match any amount of characters including o characters.

setEscapeChar

public void setEscapeChar(char escapeChar)

Sets the new character to be used as an escape character, overriding the the default of '\'.

Parameters:

escapeChar - The char used to match escape wildcard characters.

getSingleWildcardChar

public char getSingleWildcardChar()

Returns the character used to specify exactly one character.

Returns:

Wildcard character matching any single character.

getMultipleWildcardChar

public char getMultipleWildcardChar()

Returns the character used to specify any amount of characters.

Returns:

Wildcard character matching any count of characters.

getEscapeChar

public char getEscapeChar()

Returns the character used to escape the wildcard functionality of a wildcard character. If two escape characters are used in sequence, they mean the escape character itself. It defaults to '\'.

Returns:

Escape character.

setCaseSensitive

public void setCaseSensitive(boolean caseSensitive)

Makes pattern matching case insensitive.

Parameters:

caseSensitive - false for case insensitivity. Default is case sensitive match.

getCaseSensitive

public boolean getCaseSensitive()

Returns the current state of case sensitivity.

Returns:

true for case sensitive pattern matching, false otherwise.

match

public boolean match(String s,
            String pattern)

Matches a string against a pattern with wildcards. Two wildcard types are supported: single character match (defaults to '?') and ANY character match ('*'), matching any count of characters including 0. Wildcard characters may be escaped by an escape character, which defaults to '\'.

Parameters:

s - The string, in which the search should be performed.

pattern - The search pattern string including wildcards.

Returns:

true, if string 's' matches 'pattern'.