org.clapper.util.io

Class RegexFileFilter

java.lang.Object

org.clapper.util.io.RegexFileFilter

All Implemented Interfaces:

java.io.FileFilter

public class RegexFileFilter
extends java.lang.Object
implements java.io.FileFilter

RegexFileFilter implements a java.io.FileFilter class that matches files using a regular expression. Multiple regular expression filters can be combined using AndFileFilter and/or OrFileFilter objects.

A RegexFileFilter can be configured to operate on just the simple file name, or on the file's path.

RegexFileFilter uses the java.util.regex regular expression classes.

See Also:

AndFileFilter, OrFileFilter, NotFileFilter, RegexFilenameFilter

Constructor Summary

Constructors

Constructor and Description
RegexFileFilter(java.lang.String regex, FileFilterMatchType matchType) Construct a new RegexFileFilter using the specified pattern.
RegexFileFilter(java.lang.String regex, int regexFlags, FileFilterMatchType matchType) Construct a new RegexFileFilter using the specified pattern.

Method Summary

Modifier and Type	Method and Description
boolean	accept(java.io.File file) Determine whether a file is to be accepted or not, based on the regular expressions in the reject and accept lists.

Methods inherited from class java.lang.Object

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

Constructor Detail

RegexFileFilter

public RegexFileFilter(java.lang.String regex,
                       FileFilterMatchType matchType)
                throws java.util.regex.PatternSyntaxException

Construct a new RegexFileFilter using the specified pattern.

Parameters:

regex - the regular expression to add

matchType - FileFilterMatchType.FILENAME to match just the filename, FileFilterMatchType.PATH to match the path (via java.io.File.getPath())

Throws:

java.util.regex.PatternSyntaxException - bad regular expression

RegexFileFilter

public RegexFileFilter(java.lang.String regex,
                       int regexFlags,
                       FileFilterMatchType matchType)
                throws java.util.regex.PatternSyntaxException

Construct a new RegexFileFilter using the specified pattern.

Parameters:

regex - the regular expression to add

regexFlags - regular expression compilation flags (e.g., Pattern.CASE_INSENSITIVE). See the Javadocs for java.util.regex for legal values.

matchType - FileFilterMatchType.FILENAME to match just the filename, FileFilterMatchType.PATH to match the path (via java.io.File.getPath())

Throws:

java.util.regex.PatternSyntaxException - bad regular expression

Method Detail

accept

public boolean accept(java.io.File file)

Determine whether a file is to be accepted or not, based on the regular expressions in the reject and accept lists.

Specified by:

accept in interface java.io.FileFilter

Parameters:

file - The file to test. If the match type is FileFilterMatchType.FILENAME, then the value of file.getPath() is compared to the regular expression. If the match type is FileFilterMatchType.PATH, then the value of file.getName() is compared to the regular expression.

Returns:

true if the file matches, false if it doesn't