org.eclipse.mylyn.monitor.ui/src/org/eclipse/mylyn/internal/monitor/HtmlTag.java - mylyn/org.eclipse.mylyn.commons - Git at Google

 /*******************************************************************************
  * Copyright (c) 2004 - 2006 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.internal.monitor;

 import java.net.URL;
 import java.text.ParseException;
 import java.util.HashMap;
 import java.util.Iterator;
 import javax.swing.text.html.HTML.Tag;

 /**
  * Class representing an HTML (3.2) tag and its attributes.
  */
 public class HtmlTag {
 	/** tag's name */
 	private String tagName;

 	/** tag type enum */
 	private Tag tagType;

 	/** true if the tag is a closing tag */
 	private boolean isEndTag;

 	/** tag's attributes (keys are lowercase attribute names) */
 	private HashMap<String, String> attributes;

 	/** tag's base url */
 	private URL baseUrl;

 	/**
 	 * Basic constructor. The tag is uninitialized.
 	 */
 	public HtmlTag() {
 		tagName = null;
 		tagType = Type.UNKNOWN;
 		isEndTag = false;
 		attributes = new HashMap<String, String>();
 		baseUrl = null;
 	}

 	/**
 	 * Copy constructor.
 	 */
 	@SuppressWarnings("unchecked")
 	public HtmlTag(HtmlTag htmltag) {
 		tagName = null;
 		tagType = Type.UNKNOWN;
 		isEndTag = false;
 		attributes = new HashMap<String, String>();
 		tagName = new String(htmltag.tagName);
 		baseUrl = htmltag.baseUrl;
 		tagType = htmltag.tagType;
 		isEndTag = htmltag.isEndTag;
 		attributes = (HashMap) htmltag.attributes.clone();
 	}

 	/**
 	 * Constructor.
 	 */
 	public HtmlTag(String s) throws ParseException {
 		attributes = new HashMap<String, String>();
 		setTagName(s);
 		baseUrl = null;
 	}

 	/**
 	 * Constructor creating an otherwise empty tag, but with a given base url.
 	 */
 	public HtmlTag(URL url) {
 		tagName = null;
 		tagType = Type.UNKNOWN;
 		isEndTag = false;
 		attributes = new HashMap<String, String>();
 		baseUrl = url;
 	}

 	/**
 	 * Returns the tag's type (linked to the tag's name).
 	 */
 	public Tag getTagType() {
 		return tagType;
 	}

 	/**
 	 * Returns the tag's name (e.g., "HEAD", "P", etc.).
 	 */
 	public String getTagName() {
 		return tagName;
 	}

 	/**
 	 * Sets the tag's name and type, if known.
 	 *
 	 * @throws IllegalArgumentException
 	 *             if the argument is <code>null</code> or empty string
 	 */
 	public void setTagName(String s) throws IllegalArgumentException {
 		if (s == null || s.length() == 0)
 			throw new IllegalArgumentException("Empty tag name");
 		if (s.charAt(0) == '/') {
 			isEndTag = true;
 			s = s.substring(1);
 		}
 		if (s.length() == 0)
 			throw new IllegalArgumentException("Empty tag name");
 		tagName = s;
 		tagType = tags.get(s.toUpperCase());
 		if (tagType == null) {
 			tagType = Type.UNKNOWN;
 		}
 	}

 	/**
 	 * Returns <code>true</code> if the tag is a closing tag.
 	 */
 	public boolean isEndTag() {
 		return isEndTag;
 	}

 	/**
 	 * Returns the value of a tag's attribute as an integer.
 	 */
 	public int getIntAttribute(String s) throws NumberFormatException {
 		return Integer.parseInt(getAttribute(s));
 	}

 	/**
 	 * Returns the value of a tag's attribute, or NULL if it doesn't exist.
 	 */
 	public String getAttribute(String s) {
 		return attributes.get(s);
 	}

 	/**
 	 * Returns <code>true</code> if the tag contains attribute with the given
 	 * name.
 	 */
 	public boolean hasAttribute(String s) {
 		return getAttribute(s) != null;
 	}

 	/**
 	 * Sets the value of a tag's attribute.
 	 */
 	public void setAttribute(String name, String value) {
 		attributes.put(name.toLowerCase(), value);
 	}

 	public StringBuffer getURLs() {
 		StringBuffer sb = new StringBuffer();

 		Iterator<String> attributeNames = attributes.keySet().iterator();
 		Iterator<String> attributeValues = attributes.values().iterator();
 		while (attributeNames.hasNext()) {
 			String attributeName = attributeNames.next();
 			if (attributeName.compareTo("href") == 0 || attributeName.compareTo("src") == 0) {
 				String target = attributeValues.next();
 				if (!target.endsWith(".jpg") && !target.endsWith(".gif") && !target.endsWith(".css")
 						&& !target.endsWith(".js") && !target.startsWith("mailto") && target.lastIndexOf("#") == -1
 						&& target.length() > 0) {

 					for (int i = 0; i < target.length(); i++) {
 						char ch = target.charAt(i);
 						if (!Character.isWhitespace(ch)) {
 							if (i > 0)
 								target = target.substring(i + 1);
 							break;
 						}
 					}
 					target = target.replace('\\', '/');

 					if (target.startsWith("news:") || (target.indexOf("://") != -1 && target.length() >= 7)) {
 						// Absolute URL
 						if (target.substring(0, 7).compareToIgnoreCase("http://") == 0)
 							sb.append(target);
 					} else {
 						// Relative URL

 						String baseDir = baseUrl.getPath();
 						int lastSep = -1;
 						for (int i = 0; i < baseDir.length(); i++) {
 							char ch = baseDir.charAt(i);
 							if (ch == '/')
 								lastSep = i;
 							else if (ch == '?')
 								break;
 						}
 						if (lastSep >= 0)
 							baseDir = baseDir.substring(0, lastSep);
 						while (baseDir.length() > 1 && baseDir.endsWith("/.")) {
 							baseDir = baseDir.substring(0, baseDir.length() - 2);
 						}

 						if (target.startsWith("//")) {
 							sb.append(baseUrl.getProtocol() + ":" + target);
 						} else if (target.startsWith("/")) {
 							sb.append(baseUrl.getProtocol() + "://" + baseUrl.getHost() + target);
 						} else {
 							while (target.startsWith("../")) {
 								if (baseDir.length() > 0) {
 									// can't go above root
 									baseDir = baseDir.substring(0, baseDir.lastIndexOf("/"));
 								}
 								target = target.substring(3);
 							}
 							sb.append(baseUrl.getProtocol() + "://" + baseUrl.getHost() + baseDir + "/" + target);
 						}
 					}
 				}
 			} else {
 				attributeValues.next();
 			}
 		}

 		return sb;
 	}

 	@Override
 	public String toString() {
 		StringBuffer sb = new StringBuffer();
 		sb.append('<');
 		if (isEndTag)
 			sb.append('/');
 		sb.append(tagName);
 		Iterator<String> keys = attributes.keySet().iterator();
 		Iterator<String> values = attributes.values().iterator();
 		while (keys.hasNext()) {
 			String name = keys.next();
 			sb.append(' ');
 			sb.append(name);
 			String value = values.next();
 			if (value.length() > 0) {
 				sb.append("=\"");
 				sb.append(value);
 				sb.append('"');
 			}
 		}
 		sb.append('>');

 		return sb.toString();
 	}

 	/**
 	 * Enum class for tag types.
 	 */
 	public static class Type extends Tag {
 		public static final Tag UNKNOWN = new Tag();

 		// public static final Tag THEAD = new Type("THEAD");
 		// public static final Tag DOCTYPE = new Type("!DOCTYPE");
 		// public static final Tag LABEL = new Type("LABEL");

 		// <interactionEvent>
 		// <kind>PREFERENCE</kind>
 		// <date>2005-07-04 20:11:53.490 PDT</date>
 		// <endDate>2005-07-04 20:11:53.490 PDT</endDate>
 		// <originId>org.eclipse.mylar.ui.auto.fold.isChecked</originId>
 		// <structureKind>null</structureKind>
 		// <structureHandle>null</structureHandle>
 		// <navigation>null</navigation>
 		// <delta>true</delta>
 		// <interestContribution>1.0</interestContribution>
 		// </interactionEvent>

 		public static final Tag INTERACTION_EVENT = new Type("interactionEvent");

 		public static final Tag KIND = new Type("kind");

 		public static final Tag START_DATE = new Type("date");

 		public static final Tag END_DATE = new Type("endDate");

 		public static final Tag ORIGIN_ID = new Type("originId");

 		public static final Tag STRUCTURE_KIND = new Type("structureKind");

 		public static final Tag STRUCTURE_HANDLE = new Type("structureHandle");

 		public static final Tag NAVIGATION = new Type("navigation");

 		public static final Tag DELTA = new Type("delta");

 		public static final Tag INTEREST_CONTRIBUTION = new Type("interestContribution");

 		private Type(String name) {
 			super(name);
 		}
 	}

 	private static HashMap<String, Tag> tags;
 	static {
 		tags = new HashMap<String, Tag>();
 		tags.put(new String(Type.INTERACTION_EVENT.toString()), Type.INTERACTION_EVENT);
 		tags.put(new String(Type.KIND.toString()), Type.KIND);
 		tags.put(new String(Type.START_DATE.toString()), Type.START_DATE);
 		tags.put(new String(Type.END_DATE.toString()), Type.END_DATE);
 		tags.put(new String(Type.ORIGIN_ID.toString()), Type.ORIGIN_ID);
 		tags.put(new String(Type.STRUCTURE_KIND.toString()), Type.STRUCTURE_KIND);
 		tags.put(new String(Type.STRUCTURE_HANDLE.toString()), Type.STRUCTURE_HANDLE);
 		tags.put(new String(Type.NAVIGATION.toString()), Type.NAVIGATION);
 		tags.put(new String(Type.DELTA.toString()), Type.DELTA);
 		tags.put(new String(Type.INTEREST_CONTRIBUTION.toString()), Type.INTEREST_CONTRIBUTION);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2004 - 2006 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.internal.monitor;

	import java.net.URL;
	import java.text.ParseException;
	import java.util.HashMap;
	import java.util.Iterator;
	import javax.swing.text.html.HTML.Tag;

	/**
	* Class representing an HTML (3.2) tag and its attributes.
	*/
	public class HtmlTag {
	/** tag's name */
	private String tagName;

	/** tag type enum */
	private Tag tagType;

	/** true if the tag is a closing tag */
	private boolean isEndTag;

	/** tag's attributes (keys are lowercase attribute names) */
	private HashMap<String, String> attributes;

	/** tag's base url */
	private URL baseUrl;

	/**
	* Basic constructor. The tag is uninitialized.
	*/
	public HtmlTag() {
	tagName = null;
	tagType = Type.UNKNOWN;
	isEndTag = false;
	attributes = new HashMap<String, String>();
	baseUrl = null;
	}

	/**
	* Copy constructor.
	*/
	@SuppressWarnings("unchecked")
	public HtmlTag(HtmlTag htmltag) {
	tagName = null;
	tagType = Type.UNKNOWN;
	isEndTag = false;
	attributes = new HashMap<String, String>();
	tagName = new String(htmltag.tagName);
	baseUrl = htmltag.baseUrl;
	tagType = htmltag.tagType;
	isEndTag = htmltag.isEndTag;
	attributes = (HashMap) htmltag.attributes.clone();
	}

	/**
	* Constructor.
	*/
	public HtmlTag(String s) throws ParseException {
	attributes = new HashMap<String, String>();
	setTagName(s);
	baseUrl = null;
	}

	/**
	* Constructor creating an otherwise empty tag, but with a given base url.
	*/
	public HtmlTag(URL url) {
	tagName = null;
	tagType = Type.UNKNOWN;
	isEndTag = false;
	attributes = new HashMap<String, String>();
	baseUrl = url;
	}

	/**
	* Returns the tag's type (linked to the tag's name).
	*/
	public Tag getTagType() {
	return tagType;
	}

	/**
	* Returns the tag's name (e.g., "HEAD", "P", etc.).
	*/
	public String getTagName() {
	return tagName;
	}

	/**
	* Sets the tag's name and type, if known.
	*
	* @throws IllegalArgumentException
	* if the argument is <code>null</code> or empty string
	*/
	public void setTagName(String s) throws IllegalArgumentException {
	if (s == null \|\| s.length() == 0)
	throw new IllegalArgumentException("Empty tag name");
	if (s.charAt(0) == '/') {
	isEndTag = true;
	s = s.substring(1);
	}
	if (s.length() == 0)
	throw new IllegalArgumentException("Empty tag name");
	tagName = s;
	tagType = tags.get(s.toUpperCase());
	if (tagType == null) {
	tagType = Type.UNKNOWN;
	}
	}

	/**
	* Returns <code>true</code> if the tag is a closing tag.
	*/
	public boolean isEndTag() {
	return isEndTag;
	}

	/**
	* Returns the value of a tag's attribute as an integer.
	*/
	public int getIntAttribute(String s) throws NumberFormatException {
	return Integer.parseInt(getAttribute(s));
	}

	/**
	* Returns the value of a tag's attribute, or NULL if it doesn't exist.
	*/
	public String getAttribute(String s) {
	return attributes.get(s);
	}

	/**
	* Returns <code>true</code> if the tag contains attribute with the given
	* name.
	*/
	public boolean hasAttribute(String s) {
	return getAttribute(s) != null;
	}

	/**
	* Sets the value of a tag's attribute.
	*/
	public void setAttribute(String name, String value) {
	attributes.put(name.toLowerCase(), value);
	}

	public StringBuffer getURLs() {
	StringBuffer sb = new StringBuffer();

	Iterator<String> attributeNames = attributes.keySet().iterator();
	Iterator<String> attributeValues = attributes.values().iterator();
	while (attributeNames.hasNext()) {
	String attributeName = attributeNames.next();
	if (attributeName.compareTo("href") == 0 \|\| attributeName.compareTo("src") == 0) {
	String target = attributeValues.next();
	if (!target.endsWith(".jpg") && !target.endsWith(".gif") && !target.endsWith(".css")
	&& !target.endsWith(".js") && !target.startsWith("mailto") && target.lastIndexOf("#") == -1
	&& target.length() > 0) {

	for (int i = 0; i < target.length(); i++) {
	char ch = target.charAt(i);
	if (!Character.isWhitespace(ch)) {
	if (i > 0)
	target = target.substring(i + 1);
	break;
	}
	}
	target = target.replace('\\', '/');

	if (target.startsWith("news:") \|\| (target.indexOf("://") != -1 && target.length() >= 7)) {
	// Absolute URL
	if (target.substring(0, 7).compareToIgnoreCase("http://") == 0)
	sb.append(target);
	} else {
	// Relative URL

	String baseDir = baseUrl.getPath();
	int lastSep = -1;
	for (int i = 0; i < baseDir.length(); i++) {
	char ch = baseDir.charAt(i);
	if (ch == '/')
	lastSep = i;
	else if (ch == '?')
	break;
	}
	if (lastSep >= 0)
	baseDir = baseDir.substring(0, lastSep);
	while (baseDir.length() > 1 && baseDir.endsWith("/.")) {
	baseDir = baseDir.substring(0, baseDir.length() - 2);
	}

	if (target.startsWith("//")) {
	sb.append(baseUrl.getProtocol() + ":" + target);
	} else if (target.startsWith("/")) {
	sb.append(baseUrl.getProtocol() + "://" + baseUrl.getHost() + target);
	} else {
	while (target.startsWith("../")) {
	if (baseDir.length() > 0) {
	// can't go above root
	baseDir = baseDir.substring(0, baseDir.lastIndexOf("/"));
	}
	target = target.substring(3);
	}
	sb.append(baseUrl.getProtocol() + "://" + baseUrl.getHost() + baseDir + "/" + target);
	}
	}
	}
	} else {
	attributeValues.next();
	}
	}

	return sb;
	}

	@Override
	public String toString() {
	StringBuffer sb = new StringBuffer();
	sb.append('<');
	if (isEndTag)
	sb.append('/');
	sb.append(tagName);
	Iterator<String> keys = attributes.keySet().iterator();
	Iterator<String> values = attributes.values().iterator();
	while (keys.hasNext()) {
	String name = keys.next();
	sb.append(' ');
	sb.append(name);
	String value = values.next();
	if (value.length() > 0) {
	sb.append("=\"");
	sb.append(value);
	sb.append('"');
	}
	}
	sb.append('>');

	return sb.toString();
	}

	/**
	* Enum class for tag types.
	*/
	public static class Type extends Tag {
	public static final Tag UNKNOWN = new Tag();

	// public static final Tag THEAD = new Type("THEAD");
	// public static final Tag DOCTYPE = new Type("!DOCTYPE");
	// public static final Tag LABEL = new Type("LABEL");

	// <interactionEvent>
	// <kind>PREFERENCE</kind>
	// <date>2005-07-04 20:11:53.490 PDT</date>
	// <endDate>2005-07-04 20:11:53.490 PDT</endDate>
	// <originId>org.eclipse.mylar.ui.auto.fold.isChecked</originId>
	// <structureKind>null</structureKind>
	// <structureHandle>null</structureHandle>
	// <navigation>null</navigation>
	// <delta>true</delta>
	// <interestContribution>1.0</interestContribution>
	// </interactionEvent>

	public static final Tag INTERACTION_EVENT = new Type("interactionEvent");

	public static final Tag KIND = new Type("kind");

	public static final Tag START_DATE = new Type("date");

	public static final Tag END_DATE = new Type("endDate");

	public static final Tag ORIGIN_ID = new Type("originId");

	public static final Tag STRUCTURE_KIND = new Type("structureKind");

	public static final Tag STRUCTURE_HANDLE = new Type("structureHandle");

	public static final Tag NAVIGATION = new Type("navigation");

	public static final Tag DELTA = new Type("delta");

	public static final Tag INTEREST_CONTRIBUTION = new Type("interestContribution");

	private Type(String name) {
	super(name);
	}
	}

	private static HashMap<String, Tag> tags;
	static {
	tags = new HashMap<String, Tag>();
	tags.put(new String(Type.INTERACTION_EVENT.toString()), Type.INTERACTION_EVENT);
	tags.put(new String(Type.KIND.toString()), Type.KIND);
	tags.put(new String(Type.START_DATE.toString()), Type.START_DATE);
	tags.put(new String(Type.END_DATE.toString()), Type.END_DATE);
	tags.put(new String(Type.ORIGIN_ID.toString()), Type.ORIGIN_ID);
	tags.put(new String(Type.STRUCTURE_KIND.toString()), Type.STRUCTURE_KIND);
	tags.put(new String(Type.STRUCTURE_HANDLE.toString()), Type.STRUCTURE_HANDLE);
	tags.put(new String(Type.NAVIGATION.toString()), Type.NAVIGATION);
	tags.put(new String(Type.DELTA.toString()), Type.DELTA);
	tags.put(new String(Type.INTEREST_CONTRIBUTION.toString()), Type.INTEREST_CONTRIBUTION);
	}
	}