| /******************************************************************************* |
| * Copyright (c) 2004, 2008 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: |
| * Kentarou FUKUDA - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.actf.visualization.engines.blind.html.internal.util; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.StringReader; |
| import java.net.URL; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| |
| public class DocumentCleaner { |
| |
| // separated from VisualizeEngine |
| |
| public static Set removeCSS(Document result, String baseUrl) { |
| HashSet<String> cssSet = new HashSet<String>(); |
| |
| URL baseURL = null; |
| try { |
| baseURL = new URL(baseUrl); |
| } catch (Exception e1) { |
| //e1.printStackTrace(); |
| //System.out.println("DocCleaner: create base URL: " + baseUrl); |
| } |
| |
| //Remove CSS |
| NodeList linkEl = result.getElementsByTagName("link"); |
| if (linkEl != null) { |
| int xy = linkEl.getLength(); |
| for (int i = xy - 1; i >= 0; i--) { |
| Element x = (Element) linkEl.item(i); |
| if ("text/css".equals(x.getAttribute("type"))) { |
| String hrefS = getHref(x, baseURL); |
| if (!hrefS.equals("")) |
| cssSet.add(hrefS); |
| x.getParentNode().removeChild(x); |
| } |
| } |
| } |
| NodeList styleEl = result.getElementsByTagName("style"); |
| if (styleEl != null) { |
| int xy = styleEl.getLength(); |
| for (int i = xy - 1; i >= 0; i--) { |
| Element x = (Element) styleEl.item(i); |
| if (x.getAttribute("type").equals("text/css")) { |
| NodeList tmpNL = x.getChildNodes(); |
| for (int j = 0; j < tmpNL.getLength(); j++) { |
| Node tmpN = tmpNL.item(j); |
| getImportUrl(tmpN.toString(), baseURL, cssSet); |
| } |
| } |
| x.getParentNode().removeChild(x); |
| } |
| } |
| NodeList bodyNl = result.getElementsByTagName("body"); |
| for (int i = 0; i < bodyNl.getLength(); i++) { |
| Element bodyEl = (Element) bodyNl.item(i); |
| bodyEl.removeAttribute("style"); |
| } |
| return (cssSet); |
| } |
| |
| private static String createFullPath(URL baseURL, String spec) { |
| String result = spec; |
| if (baseURL != null) { |
| try { |
| URL targetUrl = new URL(baseURL, spec); |
| //System.out.println(targetUrl.toString()); |
| result = targetUrl.toString(); |
| } catch (Exception e) { |
| //e.printStackTrace(); |
| } |
| } |
| return (result); |
| } |
| |
| private static String getHref(Element target, URL baseURL) { |
| String result = ""; |
| if (target.hasAttribute("href")) { |
| result = target.getAttribute("href"); |
| result = createFullPath(baseURL, result); |
| } |
| return (result); |
| } |
| |
| private static void getImportUrl(String target, URL baseURL, Set<String> cssSet) { |
| BufferedReader tmpBR = new BufferedReader(new StringReader(target)); |
| String tmpS; |
| int index; |
| try { |
| while ((tmpS = tmpBR.readLine()) != null) { |
| if ((index = tmpS.indexOf("@import")) > -1) { |
| tmpS = tmpS.substring(index + 7); |
| //TODO |
| if ((index = tmpS.indexOf("url(\"")) > -1) { |
| tmpS = tmpS.substring(index + 5); |
| if ((index = tmpS.indexOf("\");")) > -1) { |
| tmpS = tmpS.substring(0, index); |
| tmpS = createFullPath(baseURL, tmpS); |
| cssSet.add(tmpS); |
| } |
| } |
| } |
| } |
| } catch (IOException e) { |
| //e.printStackTrace(); |
| } |
| } |
| |
| public static void removeBase(Document result) { |
| NodeList objectNl = result.getElementsByTagName("base"); |
| int size = objectNl.getLength(); |
| for (int i = size - 1; i >= 0; i--) { |
| Element objectEl = (Element) objectNl.item(i); |
| objectEl.getParentNode().removeChild(objectEl); |
| } |
| } |
| |
| public static void removeApplet(Document result) { |
| NodeList appletNl = result.getElementsByTagName("applet"); |
| int size = appletNl.getLength(); |
| for (int i = size - 1; i >= 0; i--) { |
| Element appletEl = (Element) appletNl.item(i); |
| String id = appletEl.getAttribute("id"); |
| Element divEl = result.createElement("div"); |
| divEl.setAttribute("id", id); |
| //remove param |
| Node curChild = appletEl.getLastChild(); |
| while (curChild != null) { |
| Node next = curChild.getPreviousSibling(); |
| if (!curChild.getNodeName().equals("param")) { |
| if (divEl.hasChildNodes()) { |
| divEl.insertBefore(curChild, divEl.getFirstChild()); |
| } else { |
| divEl.appendChild(curChild); |
| } |
| } |
| curChild = next; |
| } |
| appletEl.getParentNode().insertBefore(divEl, appletEl); |
| appletEl.getParentNode().removeChild(appletEl); |
| } |
| } |
| |
| public static void removeObject(Document result) { |
| NodeList objectNl = result.getElementsByTagName("object"); |
| int size = objectNl.getLength(); |
| for (int i = size - 1; i >= 0; i--) { |
| Element objectEl = (Element) objectNl.item(i); |
| String id = objectEl.getAttribute("id"); |
| Element divEl = result.createElement("div"); |
| divEl.setAttribute("id", id); |
| //remove param |
| |
| Node curChild = objectEl.getLastChild(); |
| while (curChild != null) { |
| Node next = curChild.getPreviousSibling(); |
| if (!curChild.getNodeName().equals("param")) { |
| if (divEl.hasChildNodes()) { |
| divEl.insertBefore(curChild, divEl.getFirstChild()); |
| } else { |
| divEl.appendChild(curChild); |
| } |
| } |
| curChild = next; |
| } |
| |
| objectEl.getParentNode().insertBefore(divEl, objectEl); |
| objectEl.getParentNode().removeChild(objectEl); |
| } |
| } |
| |
| public static void removeEmbed(Document doc) { //remove onload and |
| // onmouseover |
| NodeList nl = doc.getElementsByTagName("embed"); |
| int size = nl.getLength(); |
| for (int i = size - 1; i >= 0; i--) { |
| Element el = (Element) nl.item(i); |
| String id = el.getAttribute("id"); |
| Element newDiv = doc.createElement("div"); |
| newDiv.setAttribute("id", id); |
| |
| Node parent = el.getParentNode(); |
| |
| NodeList noembedL = el.getElementsByTagName("noembed"); |
| Node childNoembed = null; |
| boolean hasNoembed = false; |
| for (int j = 0; j < noembedL.getLength(); j++) { |
| //System.out.println(j + "/" + noembedL.getLength() + " " + hasNoembed); |
| childNoembed = noembedL.item(j); |
| if (el == childNoembed.getParentNode()) { |
| hasNoembed = true; |
| break; |
| } |
| } |
| |
| Node startNode; |
| |
| if (hasNoembed) { |
| NodeList tmpNL = childNoembed.getChildNodes(); |
| for (int k = tmpNL.getLength() - 1; k >= 0; k--) { |
| newDiv.insertBefore(tmpNL.item(k), newDiv.getFirstChild()); |
| } |
| startNode = childNoembed.getNextSibling(); |
| } else { |
| newDiv.appendChild(doc.createTextNode("(Embeded element)")); |
| startNode = el.getFirstChild(); |
| } |
| |
| parent.insertBefore(newDiv, el); |
| while (startNode != null) { |
| Node next = startNode.getNextSibling(); |
| parent.insertBefore(startNode, el); |
| startNode = next; |
| } |
| parent.removeChild(el); |
| } |
| } |
| |
| public static void removeOnMouse(Element element) { |
| String str = element.getAttribute("onmouseover"); |
| if ((str != null) && (str.length() > 0)) { |
| element.removeAttribute("onmouseover"); |
| } |
| str = element.getAttribute("onmouseout"); |
| if ((str != null) && (str.length() > 0)) { |
| element.removeAttribute("onmouseout"); |
| } |
| str = element.getAttribute("onmousemove"); |
| if ((str != null) && (str.length() > 0)) { |
| element.removeAttribute("onmousemove"); |
| } |
| str = element.getAttribute("onclick"); |
| if ((str != null) && (str.length() > 0)) { |
| element.removeAttribute("onclick"); |
| } |
| str = element.getAttribute("onresize"); |
| if ((str != null) && (str.length() > 0)) { |
| element.removeAttribute("onresize"); |
| } |
| |
| } |
| |
| public static void removeOnLoad(Element element) { |
| String str = element.getAttribute("onload"); |
| if ((str != null) && (str.length() > 0)) { |
| element.removeAttribute("onload"); |
| } |
| } |
| |
| public static void removeDisplayNone(Document doc) { |
| NodeList tmpNL = doc.getElementsByTagName("div"); |
| for (int i = 0; i < tmpNL.getLength(); i++) { |
| Element tmpE = (Element) tmpNL.item(i); |
| //System.out.println(tmpE.getAttribute("style")); |
| if (tmpE.getAttribute("style").indexOf("DISPLAY: none") > -1) { |
| Node parent = tmpE.getParentNode(); |
| if (parent != null) { |
| //System.out.println("remove display: none"); |
| parent.removeChild(tmpE); |
| } |
| } |
| } |
| } |
| |
| public static void removeBgcolor(Document doc) { |
| NodeList bodyNl = doc.getElementsByTagName("body"); |
| |
| if (bodyNl.getLength() > 0) { |
| |
| Element bodyEl = (Element) bodyNl.item(0); |
| bodyEl.removeAttribute("bgcolor"); |
| } |
| } |
| |
| public static void removeMeta(Document doc) { |
| NodeList nl = doc.getElementsByTagName("meta"); |
| int size = nl.getLength(); |
| for (int i = 0; i < size; i++) { |
| Element el = (Element) nl.item(i); //item(i)? |
| String http_equiv = el.getAttribute("http-equiv"); |
| if ((http_equiv != null) && (http_equiv.equalsIgnoreCase("refresh")||http_equiv.equalsIgnoreCase("Content-Type"))) { |
| el.removeAttribute("http-equiv"); |
| } |
| } |
| } |
| |
| public static void removeJavaScript(List nodeList, Document doc) { |
| /* |
| * remove onload and onmouseover |
| */ |
| NodeList nl = doc.getElementsByTagName("script"); |
| int size = nl.getLength(); |
| for (int i = size - 1; i >= 0; i--) { |
| try { |
| Element el = (Element) nl.item(i); |
| //if (el.getParentNode().getNodeName().equals("head")) { |
| el.getParentNode().removeChild(el); |
| } catch (Exception e) { |
| // |
| } |
| } |
| |
| nl = doc.getElementsByTagName("body"); |
| size = nl.getLength(); |
| for (int i = 0; i < size; i++) { |
| try { |
| ((Element) nl.item(i)).removeAttribute("onload"); |
| // Added on 2004/03/03 |
| ((Element) nl.item(i)).removeAttribute("onunload"); |
| } catch (Exception e) { |
| // |
| } |
| } |
| size = nodeList.size(); |
| for (int i = 0; i < size; i++) { |
| Node node = ((VisualizationNodeInfo) nodeList.get(i)).getNode(); |
| if (node.getNodeType() == Node.ELEMENT_NODE) { |
| try { |
| Element el = (Element) node; |
| String onload = el.getAttribute("onload"); |
| if (onload.length() > 0) { |
| el.removeAttribute("onload"); |
| } |
| String onmouseover = el.getAttribute("onmouseover"); |
| if (onmouseover.length() > 0) { |
| el.removeAttribute("onmouseover"); |
| } |
| } catch (Exception e) { |
| // |
| } |
| } |
| |
| } |
| } |
| |
| } |
