| /******************************************************************************* |
| * Copyright (c) 2001, 2004 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| ******************************************************************************/ |
| |
| package org.eclipse.wst.ws.internal.parser.wsil; |
| |
| import java.io.UnsupportedEncodingException; |
| import java.util.Vector; |
| |
| import org.xml.sax.Attributes; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.SAXParseException; |
| import org.xml.sax.helpers.DefaultHandler; |
| |
| public class HTMLHeadHandler extends DefaultHandler |
| { |
| private final char START_TAG = '<'; |
| private final char END_TAG = '>'; |
| private final String HEAD_START_TAG = "<head>"; |
| private final String HEAD_END_TAG = "</head>"; |
| private final String ROOT_START_TAG = "<root>"; |
| private final String ROOT_END_TAG = "</root>"; |
| private final String UTF8 = "UTF-8"; |
| |
| // WSIL tag information. |
| private final String META = "meta"; |
| private final String NAME = "name"; |
| private final String SERVICE_INSPECTION = "serviceInspection"; |
| private final String CONTENT = "content"; |
| |
| // DISCO tag information. |
| private final String LINK = "link"; |
| private final String TYPE = "type"; |
| private final String TEXT_XML = "text/xml"; |
| private final String REL = "rel"; |
| private final String ALTERNATE = "alternate"; |
| private final String HREF = "href"; |
| |
| private String baseURI_; |
| private Vector wsils_; |
| private Vector discos_; |
| |
| public HTMLHeadHandler(String baseURI) |
| { |
| super(); |
| baseURI_ = baseURI; |
| wsils_ = new Vector(); |
| discos_ = new Vector(); |
| } |
| |
| public String[] getWsils() |
| { |
| String[] wsils = new String[wsils_.size()]; |
| wsils_.copyInto(wsils); |
| return wsils; |
| } |
| |
| public String[] getDiscos() |
| { |
| String[] discos = new String[discos_.size()]; |
| discos_.copyInto(discos); |
| return discos; |
| } |
| |
| public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException |
| { |
| String qNameLC = qName.toLowerCase(); |
| if (qNameLC.equals(META)) |
| { |
| String nameValue = attributes.getValue(NAME); |
| if (SERVICE_INSPECTION.equals(nameValue)) |
| { |
| String wsilURI = attributes.getValue(CONTENT); |
| if (baseURI_ != null && wsilURI.indexOf(":/") == -1) |
| { |
| StringBuffer sb = new StringBuffer(); |
| sb.append(baseURI_.substring(0, baseURI_.lastIndexOf("/")+1)); |
| sb.append(wsilURI); |
| wsilURI = sb.toString(); |
| } |
| if (!wsils_.contains(wsilURI)) |
| wsils_.add(wsilURI); |
| } |
| } |
| else if (qNameLC.equals(LINK)) |
| { |
| // See http://msdn.microsoft.com/msdnmag/issues/02/02/xml/default.aspx for more details on DISCO. |
| String type = attributes.getValue(TYPE); |
| String rel = attributes.getValue(REL); |
| String href = attributes.getValue(HREF); |
| if (TEXT_XML.equals(type) && ALTERNATE.equals(rel) && href != null) |
| { |
| String discoURI = href; |
| if (discoURI.indexOf(":/") == -1) |
| { |
| StringBuffer sb = new StringBuffer(); |
| sb.append(baseURI_.substring(0,baseURI_.lastIndexOf("/")+1)); |
| sb.append(discoURI); |
| discoURI = sb.toString(); |
| } |
| if (!discos_.contains(discoURI)) |
| discos_.add(discoURI); |
| } |
| } |
| } |
| |
| public void error(SAXParseException e) throws SAXException |
| { |
| } |
| |
| public void fatalError(SAXParseException e) throws SAXException |
| { |
| } |
| |
| public void warning(SAXParseException e) throws SAXException |
| { |
| } |
| |
| private void harvestTags(StringBuffer target,String document,String tag) |
| { |
| int index = document.indexOf(START_TAG); |
| int documentLength = document.length(); |
| int tagLength = tag.length(); |
| while (index != -1 && (index+1+tagLength)<documentLength) |
| { |
| String str = document.substring(index+1,index+1+tagLength); |
| if (str.toLowerCase().equals(tag)) |
| { |
| str = document.substring(index,document.indexOf(END_TAG,index+1)+1); |
| target.append(str); |
| index += str.length(); |
| } |
| else |
| index++; |
| index = document.indexOf(START_TAG,index); |
| } |
| } |
| |
| public byte[] harvestHeadTags(byte[] b) |
| { |
| String s; |
| try |
| { |
| s = new String(b, UTF8); |
| } |
| catch (UnsupportedEncodingException uee) |
| { |
| s = new String(b); |
| } |
| String head = s.toLowerCase(); |
| int headStartIndex = head.indexOf(HEAD_START_TAG); |
| int headEndIndex = head.indexOf(HEAD_END_TAG); |
| StringBuffer sb = new StringBuffer(); |
| sb.append(ROOT_START_TAG); |
| if (headStartIndex != -1 && headEndIndex != -1) |
| { |
| head = s.substring(headStartIndex, headEndIndex+HEAD_END_TAG.length()); |
| harvestTags(sb,head,META); |
| harvestTags(sb,head,LINK); |
| } |
| sb.append(ROOT_END_TAG); |
| return sb.toString().getBytes(); |
| } |
| } |