/*
* Copyright 2001-2002,2004 The Apache Software Foundation
*
* 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 org.apache.tools.ant.taskdefs.optional.sitraka;
import java.util.Vector;
import org.apache.tools.ant.util.regexp.RegexpMatcher;
import org.apache.tools.ant.util.regexp.RegexpMatcherFactory;
/**
* Filters information from coverage, somewhat similar to a <tt>FileSet</tt>.
*
* @author <a href="mailto:sbailliez@imediation.com">Stephane Bailliez</a>
*/
public class ReportFilters {
/** user defined filters */
protected Vector filters = new Vector();
/** cached matcher for each filter */
protected Vector matchers = null;
public ReportFilters() {
}
public void addInclude(Include incl) {
filters.addElement(incl);
}
public void addExclude(Exclude excl) {
filters.addElement(excl);
}
public int size() {
return filters.size();
}
/**
* Check whether a given <classname><method>() is accepted by the list
* of filters or not.
* @param methodname the full method name in the format <classname><method>()
*/
public boolean accept(String methodname) {
// I'm deferring matcher instantiations at runtime to avoid computing
// the filters at parsing time
if (matchers == null) {
createMatchers();
}
boolean result = false;
// assert filters.size() == matchers.size()
final int size = filters.size();
for (int i = 0; i < size; i++) {
FilterElement filter = (FilterElement) filters.elementAt(i);
RegexpMatcher matcher = (RegexpMatcher) matchers.elementAt(i);
if (filter instanceof Include) {
result = result || matcher.matches(methodname);
} else if (filter instanceof Exclude) {
result = result && !matcher.matches(methodname);
} else {
//not possible
throw new IllegalArgumentException("Invalid filter element: "
+ filter.getClass().getName());
}
}
return result;
}
/** should be called only once to cache matchers */
protected void createMatchers() {
RegexpMatcherFactory factory = new RegexpMatcherFactory();
final int size = filters.size();
matchers = new Vector();
for (int i = 0; i < size; i++) {
FilterElement filter = (FilterElement) filters.elementAt(i);
RegexpMatcher matcher = factory.newRegexpMatcher();
String pattern = filter.getAsPattern();
matcher.setPattern(pattern);
matchers.addElement(matcher);
}
}
/** default abstract filter element class */
public abstract static class FilterElement {
protected String clazz = "*"; // default is all classes
protected String method = "*"; // default is all methods
public void setClass(String value) {
clazz = value;
}
public void setMethod(String value) {
method = value;
}
public String getAsPattern() {
StringBuffer buf = new StringBuffer(toString());
StringUtil.replace(buf, ".", "\\.");
StringUtil.replace(buf, "*", ".*");
StringUtil.replace(buf, "(", "\\(");
StringUtil.replace(buf, ")", "\\)");
return buf.toString();
}
public String toString() {
return clazz + "." + method + "()";
}
}
/** concrete include class */
public static class Include extends FilterElement {
}
/** concrete exclude class */
public static class Exclude extends FilterElement {
}
}