/*
* Copyright (c) 2007, Romain Guy
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of the TimingFramework project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.clothocore.tool.pluginmanager.io;
import java.io.FileFilter;
import java.io.File;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
/**
* @author Romain Guy
*/
public class UnixGlobFileFilter implements FileFilter {
private Pattern pattern;
public UnixGlobFileFilter(String filter) {
pattern = Pattern.compile(globToRegex(filter));
}
public boolean accept(File file) {
String path = file.getName();
Matcher matcher = pattern.matcher(path);
return matcher.matches();
}
private String globToRegex(String glob) {
char c = '\0';
boolean escape = false;
boolean enclosed = false;
StringBuffer buffer = new StringBuffer(glob.length());
for (int i = 0; i < glob.length(); i++) {
c = glob.charAt(i);
if (escape) {
buffer.append('\\');
buffer.append(c);
escape = false;
continue;
}
switch (c) {
case '*':
buffer.append('.').append('*');
break;
case '?':
buffer.append('.');
break;
case '\\':
escape = true;
break;
case '.':
buffer.append('\\').append('.');
break;
case '{':
buffer.append('(');
enclosed = true;
break;
case '}':
buffer.append(')');
enclosed = false;
break;
case ',':
if (enclosed)
buffer.append('|');
else
buffer.append(',');
break;
default:
buffer.append(c);
}
}
return buffer.toString();
}
}