| /******************************************************************************* |
| * Copyright (c) 2000, 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.jdt.internal.corext.refactoring.nls; |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IRegion; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| |
| /** |
| * Simple LineReader Helper. Returns lines including "line-break" characters. |
| */ |
| public class SimpleLineReader { |
| |
| private IDocument fInput; |
| private int fCurrLine; |
| |
| public SimpleLineReader(IDocument input) { |
| fInput = input; |
| fCurrLine= 0; |
| } |
| |
| public String readLine() { |
| int nLines= fInput.getNumberOfLines(); |
| if (fCurrLine >= nLines) { |
| return null; |
| } |
| |
| try { |
| IRegion region= fInput.getLineInformation(fCurrLine++); |
| String content= fInput.get(region.getOffset(), region.getLength()); |
| |
| int start= region.getOffset(); |
| |
| boolean continuesOnNext= content.endsWith("\\") && !isCommentOrWhiteSpace(content); //$NON-NLS-1$ |
| |
| while (continuesOnNext && fCurrLine < nLines) { |
| region= fInput.getLineInformation(fCurrLine++); |
| content= fInput.get(region.getOffset(), region.getLength()); |
| continuesOnNext= content.endsWith("\\") && !isCommentOrWhiteSpace(content); //$NON-NLS-1$ |
| } |
| int end; |
| if (fCurrLine < nLines) { |
| end= fInput.getLineOffset(fCurrLine); // beginning of next |
| } else { |
| end= fInput.getLength(); |
| if (end == start) { |
| return null; // nd of file, empty line -> null |
| } |
| } |
| return fInput.get(start, end - start); |
| } catch (BadLocationException e) { |
| // should not happen |
| JavaPlugin.log(e); |
| } |
| return null; |
| } |
| |
| public static boolean isCommentOrWhiteSpace(String line) { |
| line = line.trim(); |
| return (line.length() == 0) || line.charAt(0) == '!' || line.charAt(0) == '#'; |
| } |
| } |