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/*******************************************************************************
* Copyright (c) 2003 - 2005 University Of British Columbia and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* University Of British Columbia - initial API and implementation
*******************************************************************************/
package org.eclipse.mylar.bugzilla.core.internal;
import java.io.IOException;
import java.io.Reader;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.List;
import javax.security.auth.login.LoginException;
import org.eclipse.mylar.bugzilla.core.internal.HtmlStreamTokenizer.Token;
/**
* @author Shawn Minto
*
* This class is used to parse the available products to log a bug for
*/
public class ProductParser
{
/** Tokenizer used on the stream */
private HtmlStreamTokenizer tokenizer;
public ProductParser(Reader in) {
tokenizer = new HtmlStreamTokenizer(in, null);
}
/**
* Parse the product page for the valid products that a bug can be logged for
* @param in The input stream for the products page
* @return A list of the products that we can enter bugs for
* @throws IOException
* @throws ParseException
*/
public List<String> getProducts() throws IOException, ParseException, LoginException
{
ArrayList<String> products = null;
boolean isTitle = false;
boolean possibleBadLogin = false;
String title = "";
for (HtmlStreamTokenizer.Token token = tokenizer.nextToken(); token.getType() != Token.EOF; token = tokenizer.nextToken()) {
// make sure that bugzilla doesn't want us to login
if(token.getType() == Token.TAG && ((HtmlTag)(token.getValue())).getTagType() == HtmlTag.Type.TITLE && !((HtmlTag)(token.getValue())).isEndTag())
{
isTitle = true;
continue;
}
if(isTitle)
{
// get all of the data in the title tag
if(token.getType() != Token.TAG)
{
title += ((StringBuffer)token.getValue()).toString().toLowerCase() + " ";
continue;
}
else if(token.getType() == Token.TAG && ((HtmlTag)token.getValue()).getTagType() == HtmlTag.Type.TITLE && ((HtmlTag)token.getValue()).isEndTag())
{
// compare the title to see if we think that there is a problem with login
if((title.indexOf("login") != -1 || (title.indexOf("invalid") != -1 && title.indexOf("password") != -1) || title.indexOf("check e-mail") != -1 || title.indexOf("error") != -1))
possibleBadLogin = true;
isTitle = false;
title = "";
}
continue;
}
if (token.getType() == Token.TAG ) {
HtmlTag tag = (HtmlTag) token.getValue();
if (tag.getTagType() == HtmlTag.Type.TR)
{
token = tokenizer.nextToken();
if(token.getType() != Token.EOF && token.getType() == Token.TAG)
{
tag = (HtmlTag)token.getValue();
if(tag.getTagType() != HtmlTag.Type.TH)
continue;
else
{
if(products == null)
products = new ArrayList<String>();
parseProducts(products);
}
}
continue;
}
}
}
// if we have no products and we suspect a login error, assume that it was a login error
if(products == null && possibleBadLogin)
throw new LoginException("Bugzilla login information incorrect");
return products;
}
/**
* Parse the products that we can enter bugs for
* @param products The list of products to add this new product to
* @return
*/
private void parseProducts(List<String> products) throws IOException, ParseException
{
StringBuffer sb = new StringBuffer();
for (HtmlStreamTokenizer.Token token = tokenizer.nextToken(); token.getType() != Token.EOF; token = tokenizer.nextToken())
{
if(token.getType() == Token.TAG)
{
HtmlTag tag = (HtmlTag)token.getValue();
if(tag.getTagType() == HtmlTag.Type.TH && tag.isEndTag())
break;
}
else if(token.getType() == Token.TEXT)
sb.append(token.toString());
}
String prod = HtmlStreamTokenizer.unescape(sb).toString();
if(prod.endsWith(":"))
prod = prod.substring(0, prod.length() - 1);
products.add(prod);
for (HtmlStreamTokenizer.Token token = tokenizer.nextToken(); token.getType() != Token.EOF; token = tokenizer.nextToken())
{
if(token.getType() == Token.TAG)
{
HtmlTag tag = (HtmlTag)token.getValue();
if(tag.getTagType() == HtmlTag.Type.TR && tag.isEndTag())
break;
}
}
}
}
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