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Posted to issues@commons.apache.org by "Gary D. Gregory (JIRA)" <ji...@apache.org> on 2012/05/16 18:07:02 UTC
[jira] [Resolved] (VFS-400) Add a FileSelector based on regular
expressions
[ https://issues.apache.org/jira/browse/VFS-400?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gary D. Gregory resolved VFS-400.
---------------------------------
Resolution: Fixed
Fix Version/s: 2.1
Implemented as org.apache.commons.vfs2.PatternFileSelector.
> Add a FileSelector based on regular expressions
> -----------------------------------------------
>
> Key: VFS-400
> URL: https://issues.apache.org/jira/browse/VFS-400
> Project: Commons VFS
> Issue Type: New Feature
> Affects Versions: 2.1
> Reporter: Rikard Oxenstrand
> Priority: Minor
> Fix For: 2.1
>
> Attachments: FileRegexSelector.java.patch
>
>
> In the long todo list there was a post about adding a file selector based on regular expressions. I had need for that for a specific project so I built a simple class that seems to work. I'm kind of new to open source contribution though so I'm not sure if i should just commit it to trunk. Here is the code:
> {code:title=FileRegexSelector.java|borderStyle=solid}
> /*
> * Licensed to the Apache Software Foundation (ASF) under one or more
> * contributor license agreements. See the NOTICE file distributed with
> * this work for additional information regarding copyright ownership.
> * The ASF licenses this file to You under the Apache License, Version 2.0
> * (the "License"); you may not use this file except in compliance with
> * the License. You may obtain a copy of the License at
> *
> * http://www.apache.org/licenses/LICENSE-2.0
> *
> * Unless required by applicable law or agreed to in writing, software
> * distributed under the License is distributed on an "AS IS" BASIS,
> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
> * See the License for the specific language governing permissions and
> * limitations under the License.
> */
> package org.apache.commons.vfs2;
> import java.util.regex.Matcher;
> import java.util.regex.Pattern;
> /**
> * A {@link FileSelector} that selects based on regular expressions matched against base filename.
> *
> * @since 2.1
> */
> public class FileRegexSelector implements FileSelector
> {
> /**
> * The extensions to select.
> */
> private Pattern pattern = null;
> /**
> * Creates a new selector for the given extensions.
> *
> * @param extensions
> * The extensions to be included by this selector.
> */
> public FileRegexSelector(String regex)
> {
> this.pattern = Pattern.compile(regex);
> }
> /**
> * Determines if a file or folder should be selected.
> * @param fileInfo
> * The file selection information.
> * @return true if the file should be selected, false otherwise.
> */
> public boolean includeFile(final FileSelectInfo fileInfo)
> {
> if (this.pattern == null)
> {
> return false;
> }
> Matcher matcher = this.pattern.matcher(fileInfo.getFile().getName().getBaseName());
> return matcher.matches();
> }
> /**
> * Determines whether a folder should be traversed.
> *
> * @param fileInfo
> * The file selection information.
> * @return true if descendents should be traversed, fase otherwise.
> */
> public boolean traverseDescendents(final FileSelectInfo fileInfo)
> {
> return true;
> }
> }
> {code}
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