/*
* Copyright (c) 2009-2013 Panxiaobo
*
* 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 pxb.android.axml;
import static pxb.android.axml.AxmlParser.END_FILE;
import static pxb.android.axml.AxmlParser.END_NS;
import static pxb.android.axml.AxmlParser.END_TAG;
import static pxb.android.axml.AxmlParser.START_NS;
import static pxb.android.axml.AxmlParser.START_TAG;
import static pxb.android.axml.AxmlParser.TEXT;
import java.io.IOException;
import java.util.Stack;
/**
* a class to read android axml
*
* @author <a href="mailto:pxb1988@gmail.com">Panxiaobo</a>
*/
public class AxmlReader {
public static final NodeVisitor EMPTY_VISITOR = new NodeVisitor() {
@Override
public NodeVisitor child(String ns, String name) {
return this;
}
};
final AxmlParser parser;
public AxmlReader(byte[] data) {
super();
this.parser = new AxmlParser(data);
}
public void accept(final AxmlVisitor av) throws IOException {
Stack<NodeVisitor> nvs = new Stack<NodeVisitor>();
NodeVisitor tos = av;
while (true) {
int type = parser.next();
switch (type) {
case START_TAG:
nvs.push(tos);
tos = tos.child(parser.getNamespaceUri(), parser.getName());
if (tos != null) {
if (tos != EMPTY_VISITOR) {
tos.line(parser.getLineNumber());
for (int i = 0; i < parser.getAttrCount(); i++) {
tos.attr(parser.getAttrNs(i), parser.getAttrName(i), parser.getAttrResId(i),
parser.getAttrType(i), parser.getAttrValue(i));
}
}
} else {
tos = EMPTY_VISITOR;
}
break;
case END_TAG:
tos.end();
tos = nvs.pop();
break;
case START_NS:
av.ns(parser.getNamespacePrefix(), parser.getNamespaceUri(), parser.getLineNumber());
break;
case END_NS:
break;
case TEXT:
tos.text(parser.getLineNumber(), parser.getText());
break;
case END_FILE:
return;
}
}
}
}