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/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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.android.anttargetprint;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
public class BuildXmlHandler extends DefaultHandler {
private Map<String, String> mTargets = new HashMap<String, String>();
private int mLevel = 0;
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes)
throws SAXException {
mLevel++;
if (mLevel == 2 && "target".equals(qName)) {
String name = attributes.getValue("name");
String depends = attributes.getValue("depends");
if (name != null) {
if (depends == null) {
depends = "";
}
mTargets.put(name, depends);
}
}
super.startElement(uri, localName, qName, attributes);
}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
mLevel--;
super.endElement(uri, localName, qName);
}
Map<String, List<String>> processTargets() {
HashMap<String, List<String>> result = new HashMap<String, List<String>>();
for (Entry<String, String> entry : mTargets.entrySet()) {
process(entry.getKey(), entry.getValue(), result);
}
return result;
}
private List<String> process(String targetName, String targetDepends,
Map<String, List<String>> resultMap) {
// first check if this was already processed.
List<String> resultList = resultMap.get(targetName);
if (resultList != null) {
return resultList;
}
resultList = new ArrayList<String>();
if (targetDepends.length() > 0) {
String[] dependencies = targetDepends.split(",");
for (String dependency : dependencies) {
String dependencyTrim = dependency.trim();
// get all the dependencies for this targets.
List<String> dependencyList = resultMap.get(dependencyTrim);
if (dependencyList == null) {
dependencyList = process(dependencyTrim, mTargets.get(dependencyTrim),
resultMap);
}
// add those to the new result list
resultList.addAll(dependencyList);
// and add this dependency as well
resultList.add(dependencyTrim);
}
}
resultMap.put(targetName, resultList);
return resultList;
}
}
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