/******************************************************************
*
* CyberXML for Java
*
* Copyright (C) Satoshi Konno 2002
*
* File: Parser.java
*
* Revision;
*
* 11/26/2003
* - first revision.
* 03/30/2005
* - Change parse(String) to use StringBufferInputStream instead of URL.
* 11/11/2009
* - Changed Parser::parser() to use ByteArrayInputStream instead of StringBufferInputStream because of bugs in Android v1.6.
*
******************************************************************/
package org.cybergarage.xml;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.ByteArrayInputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import org.cybergarage.http.HTTP;
import org.cybergarage.http.HTTPRequest;
import org.cybergarage.http.HTTPResponse;
public abstract class Parser
{
////////////////////////////////////////////////
// Constructor
////////////////////////////////////////////////
public Parser()
{
}
////////////////////////////////////////////////
// parse
////////////////////////////////////////////////
public abstract Node parse(InputStream inStream) throws ParserException;
////////////////////////////////////////////////
// parse (URL)
////////////////////////////////////////////////
public Node parse(URL locationURL) throws ParserException
{
String host = locationURL.getHost();
int port = locationURL.getPort();
// Thanks for Hao Hu
if (port == -1)
port = 80;
String uri = locationURL.getPath();
try {
HttpURLConnection urlCon = (HttpURLConnection)locationURL.openConnection();
urlCon.setRequestMethod("GET");
urlCon.setRequestProperty(HTTP.CONTENT_LENGTH,"0");
if (host != null)
urlCon.setRequestProperty(HTTP.HOST, host);
InputStream urlIn = urlCon.getInputStream();
Node rootElem = parse(urlIn);
urlIn.close();
urlCon.disconnect();
return rootElem;
} catch (Exception e) {
//throw new ParserException(e);
}
HTTPRequest httpReq = new HTTPRequest();
httpReq.setMethod(HTTP.GET);
httpReq.setURI(uri);
HTTPResponse httpRes = httpReq.post(host, port);
if (httpRes.isSuccessful() == false)
throw new ParserException("HTTP comunication failed: no answer from peer." +
"Unable to retrive resoure -> "+locationURL.toString());
String content = new String(httpRes.getContent());
ByteArrayInputStream strBuf = new ByteArrayInputStream(content.getBytes());
return parse(strBuf);
}
////////////////////////////////////////////////
// parse (File)
////////////////////////////////////////////////
public Node parse(File descriptionFile) throws ParserException
{
try {
InputStream fileIn = new FileInputStream(descriptionFile);
Node root = parse(fileIn);
fileIn.close();
return root;
} catch (Exception e) {
throw new ParserException(e);
}
}
////////////////////////////////////////////////
// parse (Memory)
////////////////////////////////////////////////
public Node parse(String descr) throws ParserException
{
try {
InputStream decrIn = new ByteArrayInputStream(descr.getBytes());
Node root = parse(decrIn);
return root;
} catch (Exception e) {
throw new ParserException(e);
}
}
}