/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.harmony.tools.appletviewer;
import java.io.DataInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import javax.swing.text.ChangedCharSetException;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.html.HTML;
import javax.swing.text.html.parser.DTD;
import javax.swing.text.html.parser.TagElement;
class HTMLParser {
private final ParserImpl parser;
HTMLParser() throws IOException {
DTD dtd = DTD.getDTD("reader");
dtd.read(new DataInputStream(dtd.getClass().getResourceAsStream("html32.bdtd")));//transitional401.bdtd")));
parser = new ParserImpl(dtd);
}
synchronized Object []parse(String urls[], int start) throws IOException {
ArrayList<AppletInfo> list = new ArrayList<AppletInfo>(urls.length-start);
for (int i = start; i < urls.length; i++) {
parser.parse(urls[i], list);
}
return list.toArray();
}
private class ParserImpl extends javax.swing.text.html.parser.Parser {
private URL documentBase;
private ArrayList<AppletInfo> list;
private AppletInfo appletInfo = null;
private HTML.Tag startElement = null;
public ParserImpl(DTD dtd) {
super(dtd);
}
public void parse(String url, ArrayList<AppletInfo> list) throws IOException {
try {
this.documentBase = new URL(url);
} catch (MalformedURLException _) {
File f = new File(url);
this.documentBase = f.toURL();
}
this.list = list;
// Open the stream
InputStreamReader isr = null;
try{
isr = new InputStreamReader(documentBase.openStream());
} catch(IOException e){
System.err.println("I/O exception while reading: " + e.getMessage());
System.exit(-1);
}
parse(isr);
}
@Override
protected void handleStartTag(TagElement tag) {
if (tag == null)
return;
HTML.Tag htmlTag = tag.getHTMLTag();
if (htmlTag == HTML.Tag.APPLET || htmlTag == HTML.Tag.OBJECT) {
if (startElement != null) {
throw new RuntimeException(htmlTag+" inside "+startElement);
}
startElement = htmlTag;
appletInfo = new AppletInfo();
appletInfo.setTag(htmlTag.toString());
list.add(appletInfo);
appletInfo.setDocumentBase(documentBase);
SimpleAttributeSet attributes = getAttributes();
appletInfo.setParameter("WIDTH", (String)attributes.getAttribute(HTML.Attribute.WIDTH));
appletInfo.setParameter("HEIGHT", (String)attributes.getAttribute(HTML.Attribute.HEIGHT));
appletInfo.setParameter("CODE", (String)attributes.getAttribute(HTML.Attribute.CODE));
appletInfo.setParameter("ARCHIVE", (String)attributes.getAttribute(HTML.Attribute.ARCHIVE));
if (htmlTag != HTML.Tag.OBJECT) {
appletInfo.setParameter("CODEBASE", (String)attributes.getAttribute(HTML.Attribute.CODEBASE));
}
}
}
@Override
protected void handleEndTag(TagElement tag) {
if (tag != null && tag.getHTMLTag() == startElement)
startElement = null;
}
@Override
protected void handleEmptyTag(TagElement tag) throws ChangedCharSetException {
HTML.Tag htmlTag = tag.getHTMLTag();
if (appletInfo != null && htmlTag == HTML.Tag.PARAM) {
SimpleAttributeSet attributes = getAttributes();
appletInfo.setParameter((String)attributes.getAttribute(HTML.Attribute.NAME),
(String)attributes.getAttribute(HTML.Attribute.VALUE));
}
}
}
}