| /******************************************************************************* |
| * Copyright (c) 2000, 2009 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.core; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.compiler.CharOperation; |
| import org.eclipse.jdt.internal.compiler.env.ICompilationUnit; |
| import org.eclipse.jdt.internal.compiler.util.Util; |
| |
| /** |
| * A basic implementation of <code>ICompilationUnit</code> |
| * for use in the <code>SourceMapper</code>. |
| * @see ICompilationUnit |
| */ |
| public class BasicCompilationUnit implements ICompilationUnit { |
| protected char[] contents; |
| |
| // Note that if this compiler ICompilationUnit's content is known in advance, the fileName is not used to retrieve this content. |
| // Instead it is used to keep enough information to recreate the IJavaElement corresponding to this compiler ICompilationUnit. |
| // Thus the fileName can be a path to a .class file, or even a path in a .jar to a .class file. |
| // (e.g. /P/lib/mylib.jar|org/eclipse/test/X.class) |
| protected char[] fileName; |
| |
| protected char[][] packageName; |
| protected char[] mainTypeName; |
| protected String encoding; |
| |
| public BasicCompilationUnit(char[] contents, char[][] packageName, String fileName) { |
| this.contents = contents; |
| this.fileName = fileName.toCharArray(); |
| this.packageName = packageName; |
| } |
| |
| public BasicCompilationUnit(char[] contents, char[][] packageName, String fileName, String encoding) { |
| this(contents, packageName, fileName); |
| this.encoding = encoding; |
| } |
| |
| public BasicCompilationUnit(char[] contents, char[][] packageName, String fileName, IJavaElement javaElement) { |
| this(contents, packageName, fileName); |
| initEncoding(javaElement); |
| } |
| |
| /* |
| * Initialize compilation unit encoding. |
| * If we have a project, then get file name corresponding IFile and retrieve its encoding using |
| * new API for encoding. |
| * In case of a class file, then go through project in order to let the possibility to retrieve |
| * a corresponding source file resource. |
| * If we have a compilation unit, then get encoding from its resource directly... |
| */ |
| private void initEncoding(IJavaElement javaElement) { |
| if (javaElement != null) { |
| try { |
| IJavaProject javaProject = javaElement.getJavaProject(); |
| switch (javaElement.getElementType()) { |
| case IJavaElement.COMPILATION_UNIT: |
| IFile file = (IFile) javaElement.getResource(); |
| if (file != null) { |
| this.encoding = file.getCharset(); |
| break; |
| } |
| // if no file, then get project encoding |
| // $FALL-THROUGH$ |
| default: |
| IProject project = (IProject) javaProject.getResource(); |
| if (project != null) { |
| this.encoding = project.getDefaultCharset(); |
| } |
| break; |
| } |
| } catch (CoreException e1) { |
| this.encoding = null; |
| } |
| } else { |
| this.encoding = null; |
| } |
| } |
| |
| public char[] getContents() { |
| if (this.contents != null) |
| return this.contents; // answer the cached source |
| |
| // otherwise retrieve it |
| try { |
| return Util.getFileCharContent(new File(new String(this.fileName)), this.encoding); |
| } catch (IOException e) { |
| // could not read file: returns an empty array |
| } |
| return CharOperation.NO_CHAR; |
| } |
| /** |
| * @see org.eclipse.jdt.internal.compiler.env.IDependent#getFileName() |
| */ |
| public char[] getFileName() { |
| return this.fileName; |
| } |
| public char[] getMainTypeName() { |
| if (this.mainTypeName == null) { |
| int start = CharOperation.lastIndexOf('/', this.fileName) + 1; |
| if (start == 0 || start < CharOperation.lastIndexOf('\\', this.fileName)) |
| start = CharOperation.lastIndexOf('\\', this.fileName) + 1; |
| int separator = CharOperation.indexOf('|', this.fileName) + 1; |
| if (separator > start) // case of a .class file in a default package in a jar |
| start = separator; |
| |
| int end = CharOperation.lastIndexOf('$', this.fileName); |
| if (end == -1 || !Util.isClassFileName(this.fileName)) { |
| end = CharOperation.lastIndexOf('.', this.fileName); |
| if (end == -1) |
| end = this.fileName.length; |
| } |
| |
| this.mainTypeName = CharOperation.subarray(this.fileName, start, end); |
| } |
| return this.mainTypeName; |
| } |
| public char[][] getPackageName() { |
| return this.packageName; |
| } |
| public String toString(){ |
| return "CompilationUnit: "+new String(this.fileName); //$NON-NLS-1$ |
| } |
| } |