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/*
* Copyright 2000-2009 JetBrains s.r.o.
*
* Licensed 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 com.intellij.ui.classFilter;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.util.xmlb.annotations.Attribute;
import com.intellij.util.xmlb.annotations.Tag;
import com.intellij.util.xmlb.annotations.Transient;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
@Tag("class-filter")
public class ClassFilter implements Cloneable {
private static final Logger LOG = Logger.getInstance("#com.intellij.ui.classFilter.ClassFilter");
public static final ClassFilter[] EMPTY_ARRAY = new ClassFilter[0];
@Attribute("pattern")
public String PATTERN = "";
@Attribute("enabled")
public boolean ENABLED = true;
private Matcher myMatcher; // to speedup matching
public ClassFilter() {
}
public ClassFilter(String pattern) {
PATTERN = pattern;
ENABLED = true;
}
@Transient
public String getPattern() {
return PATTERN;
}
@Transient
public boolean isEnabled() {
return ENABLED;
}
public void setPattern(String pattern) {
if (pattern != null && !pattern.equals(PATTERN)) {
PATTERN = pattern;
myMatcher = null;
}
}
public void setEnabled(boolean value) {
ENABLED = value;
}
public String toString() {
return getPattern();
}
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof ClassFilter)) return false;
ClassFilter classFilter = (ClassFilter)o;
if (isEnabled() != classFilter.isEnabled()) return false;
if (!getPattern().equals(classFilter.getPattern())) return false;
return true;
}
public int hashCode() {
int result;
result = PATTERN.hashCode();
result = 29 * result + (ENABLED ? 1 : 0);
return result;
}
@Override
public ClassFilter clone() {
try {
return (ClassFilter) super.clone();
} catch (CloneNotSupportedException e) {
LOG.error(e);
return null;
}
}
public boolean matches(String name) {
return getMatcher(name).matches();
}
private Matcher getMatcher(final String name) {
if (myMatcher == null) {
// need to quote dots and dollars
final String regex = getPattern().replaceAll("\\.", "\\\\.").replaceAll("\\$", "\\\\\\$").replaceAll("\\*", ".*");
final Pattern pattern = Pattern.compile(regex);
myMatcher = pattern.matcher("");
}
myMatcher.reset(name);
return myMatcher;
}
}
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