ant/org.eclipse.ant.ui/Ant Tools Support/org/eclipse/ant/internal/ui/console/AbstractJavacPatternMatcher.java

/*******************************************************************************
 * Copyright (c) 2005 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.ant.internal.ui.console;

import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.eclipse.ant.internal.ui.AntUIPlugin;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.Path;
import org.eclipse.debug.ui.console.FileLink;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.ui.console.IPatternMatchListenerDelegate;
import org.eclipse.ui.console.PatternMatchEvent;
import org.eclipse.ui.console.TextConsole;

public abstract class AbstractJavacPatternMatcher implements IPatternMatchListenerDelegate {

    protected TextConsole fConsole;
    private static Pattern fgLineNumberPattern = Pattern.compile("\\d+"); //$NON-NLS-1$
    private Map fFileNameToIFile= new HashMap();

    /* (non-Javadoc)
     * @see org.eclipse.ui.console.IPatternMatchListenerDelegate#connect(org.eclipse.ui.console.TextConsole)
     */
    public void connect(TextConsole console) {
        fConsole= console;
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.console.IPatternMatchListenerDelegate#disconnect()
     */
    public void disconnect() {
        fConsole = null;
        fFileNameToIFile.clear();
    }
    
    protected IFile getIFile(String filePath) {
        if (filePath == null) {
            return null; 
        }
        IFile file= (IFile) fFileNameToIFile.get(filePath);
        if (file == null) {
            IFile[] files = ResourcesPlugin.getWorkspace().getRoot().findFilesForLocation(new Path(filePath));
            if (files.length > 0) {
                file = files[0];
                fFileNameToIFile.put(filePath, file);
            }
        }
        return file;
    }
    
    protected String getMatchedText(PatternMatchEvent event) {
        int eventOffset= event.getOffset();
        int eventLength= event.getLength();
        IDocument document= fConsole.getDocument();
        String matchedText= null;
        try {
            matchedText= document.get(eventOffset, eventLength);
        } catch (BadLocationException e) {
            AntUIPlugin.log(e);
        }
        return matchedText;
    }
    
    protected int getLineNumber(int eventOffset) {
        IDocument document= fConsole.getDocument();
        try {
            int fileLine = document.getLineOfOffset(eventOffset);
            IRegion region = document.getLineInformation(++fileLine);
            String lineLine = document.get(region.getOffset(), region.getLength());
            Matcher matcher = null;
            synchronized (fgLineNumberPattern) {
                matcher = fgLineNumberPattern.matcher(lineLine);
            }
            if (matcher.find()) {
                String lineString = matcher.group();
                return Integer.parseInt(lineString);
            }
            
        } catch (BadLocationException e) {
            AntUIPlugin.log(e);
        } catch (NumberFormatException e) {
            AntUIPlugin.log(e);
        }
        return -1;
    }
    
    protected void addLink(String filePath, int lineNumber, int offset, int length) {
        IFile file= getIFile(filePath);
        if (file == null) {
            return;
        }
        
        FileLink link = new FileLink(file, null, -1, -1, lineNumber);
        try {
            fConsole.addHyperlink(link, offset, length);
        } catch (BadLocationException e) {
            AntUIPlugin.log(e);
        }
    }
}