| /******************************************************************************* |
| * Copyright (c) 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.jsdt.web.core.internal.java; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Iterator; |
| |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.core.runtime.jobs.Job; |
| import org.eclipse.jface.text.DocumentEvent; |
| import org.eclipse.jface.text.IDocumentListener; |
| import org.eclipse.jface.text.Position; |
| import org.eclipse.wst.jsdt.core.IBuffer; |
| import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument; |
| import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion; |
| import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion; |
| import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionCollection; |
| import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionContainer; |
| import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionList; |
| import org.eclipse.wst.xml.core.internal.regions.DOMRegionContext; |
| |
| /** |
| * Translates a JSP document into a HttpServlet. Keeps two way mapping from java |
| * translation to the original JSP source, which can be obtained through |
| * getJava2JspRanges() and getJsp2JavaRanges(). |
| * |
| * @author pavery |
| */ |
| public class JsTranslator extends Job implements IDocumentListener{ |
| |
| private static final boolean DEBUG; |
| private static final boolean DEBUG_SAVE_OUTPUT = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.wst.jsdt.web.core/debug/jsptranslationstodisk")); //$NON-NLS-1$ //$NON-NLS-2$ |
| public static final String ENDL = "\n"; //$NON-NLS-1$ |
| |
| public static final boolean REMOVE_XML_COMMENT = true; |
| public static final String XML_COMMENT_START = "<!--"; //$NON-NLS-1$ |
| public static final String XML_COMMENT_END = "-->"; //$NON-NLS-1$ |
| |
| static { |
| String value = Platform.getDebugOption("org.eclipse.wst.jsdt.web.core/debug/jspjavamapping"); //$NON-NLS-1$ |
| DEBUG = value != null && value.equalsIgnoreCase("true"); //$NON-NLS-1$ |
| } |
| |
| private IStructuredDocumentRegion fCurrentNode; |
| private StringBuffer fScriptText = new StringBuffer(); |
| private IStructuredDocument fStructuredDocument = null; |
| private ArrayList importLocationsInHtml = new ArrayList(); |
| /* use java script by default */ |
| private boolean isGlobalJs = true; |
| private ArrayList rawImports = new ArrayList(); // traslated |
| private ArrayList scriptLocationInHtml = new ArrayList(); |
| private int scriptOffset = 0; |
| private byte[] fLock = new byte[0]; |
| private byte[] finished = new byte[0]; |
| private IBuffer compUnitBuff; |
| private boolean cancelParse = false; |
| private int missingEndTagRegionStart = -1; |
| private static final boolean ADD_SEMICOLON_AT_INLINE=true; |
| |
| |
| |
| private void advanceNextNode() { |
| setCurrentNode(getCurrentNode().getNext()); |
| } |
| |
| private void cleanupXmlQuotes() { |
| if(REMOVE_XML_COMMENT) { |
| int index = -1; |
| int replaceLength = XML_COMMENT_START.length(); |
| while((index = fScriptText.indexOf(XML_COMMENT_START, index)) > -1) { |
| fScriptText.replace(index, index + replaceLength, new String(getPad(replaceLength))); |
| } |
| |
| index = -1; |
| replaceLength = XML_COMMENT_END.length(); |
| while((index = fScriptText.indexOf(XML_COMMENT_END, index)) > -1) { |
| fScriptText.replace(index, index + replaceLength, new String(getPad(replaceLength))); |
| } |
| } |
| } |
| |
| |
| |
| |
| public JsTranslator(IStructuredDocument document, String fileName) { |
| super("JavaScript translation for : " + fileName); //$NON-NLS-1$ |
| fStructuredDocument = document; |
| |
| fStructuredDocument.addDocumentListener(this); |
| setPriority(Job.LONG); |
| setSystem(true); |
| schedule(); |
| reset(); |
| } |
| |
| public JsTranslator(IStructuredDocument document, String fileName, boolean listenForChanges) { |
| super("JavaScript translation for : " + fileName); //$NON-NLS-1$ |
| fStructuredDocument = document; |
| if(listenForChanges) { |
| fStructuredDocument.addDocumentListener(this); |
| setPriority(Job.LONG); |
| setSystem(true); |
| schedule(); |
| } |
| reset(); |
| } |
| |
| public String getJsText() { |
| synchronized(finished) { |
| return fScriptText.toString(); |
| } |
| } |
| |
| final public IStructuredDocumentRegion getCurrentNode() { |
| return fCurrentNode; |
| } |
| |
| public void setBuffer(IBuffer buffer) { |
| compUnitBuff = buffer; |
| synchronized(finished) { |
| compUnitBuff.setContents(fScriptText.toString()); |
| } |
| } |
| |
| public Position[] getHtmlLocations() { |
| synchronized(finished) { |
| return (Position[]) scriptLocationInHtml.toArray(new Position[scriptLocationInHtml.size()]); |
| } |
| } |
| |
| public int getMissingEndTagRegionStart() { |
| return missingEndTagRegionStart; |
| } |
| |
| public Position[] getImportHtmlRanges() { |
| synchronized(finished) { |
| return (Position[]) importLocationsInHtml.toArray(new Position[importLocationsInHtml.size()]); |
| } |
| } |
| |
| private char[] getPad(int numberOfChars) { |
| if(numberOfChars < 0) return new char[0]; |
| final char[] spaceArray = new char[numberOfChars]; |
| Arrays.fill(spaceArray, ' '); |
| return spaceArray; |
| } |
| |
| public String[] getRawImports() { |
| synchronized(finished) { |
| return (String[]) this.rawImports.toArray(new String[rawImports.size()]); |
| } |
| } |
| |
| |
| |
| /** |
| * |
| * @return the status of the translator's progrss monitor, false if the |
| * monitor is null |
| */ |
| private boolean isCanceled() { |
| return cancelParse; |
| } |
| |
| /** |
| * Reinitialize some fields |
| */ |
| private void reset() { |
| synchronized(fLock) { |
| scriptOffset = 0; |
| // reset progress monitor |
| cancelParse = false; |
| fScriptText = new StringBuffer(); |
| fCurrentNode = fStructuredDocument.getFirstStructuredDocumentRegion(); |
| rawImports.clear(); |
| importLocationsInHtml.clear(); |
| scriptLocationInHtml.clear(); |
| missingEndTagRegionStart = -1; |
| } |
| translate(); |
| } |
| |
| |
| |
| private IStructuredDocumentRegion setCurrentNode(IStructuredDocumentRegion currentNode) { |
| synchronized(fLock) { |
| return this.fCurrentNode = currentNode; |
| } |
| } |
| |
| public void translate() { |
| //setCurrentNode(fStructuredDocument.getFirstStructuredDocumentRegion()); |
| synchronized(finished) { |
| while (getCurrentNode() != null && !isCanceled()) { |
| // System.out.println("Translator Looking at Node |
| // type:"+getCurrentNode().getType()+"---------------------------------:"); |
| // System.out.println(new NodeHelper(getCurrentNode())); |
| // i.println("/---------------------------------------------------"); |
| if (getCurrentNode().getType() == DOMRegionContext.XML_TAG_NAME) { |
| NodeHelper nh = new NodeHelper(getCurrentNode()); |
| if ((!nh.isEndTag() || nh.isSelfClosingTag()) && nh.nameEquals("script")) { //$NON-NLS-1$ |
| /* |
| * Handles the following cases: <script |
| * type="javascriptype"> <script language="javascriptype> |
| * <script src='' type=javascriptype> <script src='' |
| * language=javascripttype <script src=''> global js type. |
| * <script> (global js type) |
| */ |
| if (NodeHelper.isInArray(JsDataTypes.JSVALIDDATATYPES, nh.getAttributeValue("type")) || NodeHelper.isInArray(JsDataTypes.JSVALIDDATATYPES, nh.getAttributeValue("language")) || isGlobalJs) { //$NON-NLS-1$ //$NON-NLS-2$ |
| if (nh.containsAttribute(new String[] { "src" })) { //$NON-NLS-1$ |
| // Handle import |
| translateScriptImportNode(getCurrentNode()); |
| } |
| // } else { |
| // handle script section |
| |
| if (getCurrentNode().getNext() != null /*&& getCurrentNode().getNext().getType() == DOMRegionContext.BLOCK_TEXT*/) { |
| translateJSNode(getCurrentNode().getNext()); |
| } |
| } // End search for <script> sections |
| } else if (nh.containsAttribute(JsDataTypes.HTMLATREVENTS)) { |
| /* Check for embeded JS events in any tags */ |
| translateInlineJSNode(getCurrentNode()); |
| } else if (nh.nameEquals("META") && nh.attrEquals("http-equiv", "Content-Script-Type") && nh.containsAttribute(new String[] { "content" })) { //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ |
| // <META http-equiv="Content-Script-Type" content="type"> |
| isGlobalJs = NodeHelper.isInArray(JsDataTypes.JSVALIDDATATYPES, nh.getAttributeValue("content")); //$NON-NLS-1$ |
| } // End big if of JS types |
| } |
| if (getCurrentNode() != null) { |
| advanceNextNode(); |
| } |
| } // end while loop |
| } |
| finishedTranslation(); |
| } |
| |
| private void finishedTranslation() { |
| cleanupXmlQuotes(); |
| if(compUnitBuff!=null) compUnitBuff.setContents(fScriptText.toString()); |
| } |
| |
| public void translateInlineJSNode(IStructuredDocumentRegion container) { |
| // System.out |
| // .println("JSPTranslator.translateInlineJSNode Entered |
| // w/ScriptOffset:" |
| // + scriptOffset); |
| |
| NodeHelper nh = new NodeHelper(container); |
| // System.out.println("inline js node looking at:\n" + nh); |
| /* start a function header.. will amend later */ |
| ITextRegionList t = container.getRegions(); |
| ITextRegion r; |
| Iterator regionIterator = t.iterator(); |
| while (regionIterator.hasNext() && !isCanceled() ) { |
| r = (ITextRegion) regionIterator.next(); |
| if (r.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_NAME) { |
| int start = r.getStart(); |
| int offset = r.getTextEnd(); |
| String tagAttrname = container.getText().substring(start, offset).trim(); |
| /* |
| * Attribute values aren't case sensative, also make sure next |
| * region is attrib value |
| */ |
| if (NodeHelper.isInArray(JsDataTypes.HTMLATREVENTS, tagAttrname)) { |
| if (regionIterator.hasNext()) { |
| regionIterator.next(); |
| } |
| if (regionIterator.hasNext()) { |
| r = ((ITextRegion) regionIterator.next()); |
| } |
| if (r.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE) { |
| int valStartOffset = container.getStartOffset(r); |
| // int valEndOffset = r.getTextEnd(); |
| String rawText = container.getText().substring(r.getStart(), r.getTextEnd()); |
| if (rawText == null || rawText.length() == 0) { |
| return; |
| } |
| /* Strip quotes */ |
| switch (rawText.charAt(0)) { |
| case '\'': |
| case '"': |
| rawText = rawText.substring(1); |
| valStartOffset++; |
| } |
| if (rawText == null || rawText.length() == 0) { |
| return; |
| } |
| switch (rawText.charAt(rawText.length() - 1)) { |
| case '\'': |
| case '"': |
| rawText = rawText.substring(0, rawText.length() - 1); |
| } |
| // Position inScript = new Position(scriptOffset, |
| // rawText.length()); |
| /* Quoted text starts +1 and ends -1 char */ |
| if(ADD_SEMICOLON_AT_INLINE) rawText = rawText + ";"; //$NON-NLS-1$ |
| Position inHtml = new Position(valStartOffset, rawText.length()); |
| scriptLocationInHtml.add(inHtml); |
| /* need to pad the script text with spaces */ |
| char[] spaces = getPad(valStartOffset - scriptOffset); |
| fScriptText.append(spaces); |
| fScriptText.append(rawText); |
| scriptOffset = fScriptText.length(); |
| } |
| } |
| } |
| } |
| } |
| |
| |
| public void translateJSNode(IStructuredDocumentRegion container) { |
| ITextRegionCollection containerRegion = container; |
| Iterator regions = containerRegion.getRegions().iterator(); |
| ITextRegion region = null; |
| |
| if(container==null) return; |
| |
| char[] spaces = getPad(container.getStartOffset() - scriptOffset); |
| fScriptText.append(spaces); |
| scriptOffset = container.getStartOffset(); |
| |
| if(container.getType()!=DOMRegionContext.BLOCK_TEXT && container.getType()!= DOMRegionContext.XML_CDATA_TEXT) { |
| return; |
| } |
| |
| while (regions.hasNext() && !isCanceled()) { |
| region = (ITextRegion) regions.next(); |
| String type = region.getType(); |
| // content assist was not showing up in JSP inside a javascript |
| // region |
| |
| //System.out.println("Region text: " + container.getText().substring(region.getStart(), region.getEnd())); |
| boolean isBlockRegion = region instanceof ITextRegionContainer; |
| /* make sure its not a sub container region, probably JSP */ |
| if (type == DOMRegionContext.BLOCK_TEXT ) { |
| int scriptStart = container.getStartOffset(); |
| int scriptTextEnd = container.getEndOffset() - container.getStartOffset(); |
| String regionText = container.getText().substring(region.getStart(), region.getEnd()); |
| int regionLength = regionText.length(); |
| // /Position inScript = new Position(scriptOffset, |
| // regionLength); |
| Position inHtml = new Position(scriptStart, scriptTextEnd); |
| scriptLocationInHtml.add(inHtml); |
| spaces = getPad(scriptStart - scriptOffset); |
| fScriptText.append(spaces); |
| // fJsToHTMLRanges.put(inScript, inHtml); |
| if(isBlockRegion) { |
| spaces = getPad(regionLength); |
| fScriptText.append(spaces); |
| }else { |
| fScriptText.append(regionText); |
| } |
| |
| |
| scriptOffset = fScriptText.length(); |
| } |
| } |
| |
| IStructuredDocumentRegion endTag = container.getNext(); |
| |
| if(endTag==null) { |
| missingEndTagRegionStart = container.getStartOffset(); |
| }else if(endTag!=null) { |
| NodeHelper nh = new NodeHelper(endTag); |
| String name = nh.getTagName(); |
| |
| if(name==null || !name.trim().equalsIgnoreCase("script") || !nh.isEndTag()) { //$NON-NLS-1$ |
| missingEndTagRegionStart = container.getStartOffset(); |
| } |
| } |
| } |
| |
| public void translateScriptImportNode(IStructuredDocumentRegion region) { |
| NodeHelper nh = new NodeHelper(region); |
| String importName = nh.getAttributeValue("src"); //$NON-NLS-1$ |
| if (importName != null && !importName.equals("")) { //$NON-NLS-1$ |
| rawImports.add(importName); |
| Position inHtml = new Position(region.getStartOffset(), region.getEndOffset()); |
| importLocationsInHtml.add(inHtml); |
| } |
| } |
| |
| |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.text.IDocumentListener#documentAboutToBeChanged(org.eclipse.jface.text.DocumentEvent) |
| */ |
| public void documentAboutToBeChanged(DocumentEvent event) { |
| cancelParse = true; |
| |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.text.IDocumentListener#documentChanged(org.eclipse.jface.text.DocumentEvent) |
| */ |
| public void documentChanged(DocumentEvent event) { |
| reset(); |
| |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.core.runtime.jobs.Job#run(org.eclipse.core.runtime.IProgressMonitor) |
| */ |
| protected IStatus run(IProgressMonitor monitor) { |
| |
| return Status.OK_STATUS; |
| } |
| |
| public void release() { |
| fStructuredDocument.removeDocumentListener(this); |
| } |
| |
| } |
