| /******************************************************************************* |
| * Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors |
| * 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: |
| * Marc R. Hoffmann - initial API and implementation |
| * |
| *******************************************************************************/ |
| package org.jacoco.report; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.Reader; |
| |
| /** |
| * Abstract base class for {@link ISourceFileLocator} locator implementations |
| * based on {@link InputStream}s. It handles the encoding and tab width. |
| */ |
| public abstract class InputStreamSourceFileLocator implements |
| ISourceFileLocator { |
| |
| private final String encoding; |
| private final int tabWidth; |
| |
| /** |
| * Creates a new locator with the given specification. |
| * |
| * @param encoding |
| * encoding of the source files, <code>null</code> for platform |
| * default encoding |
| * @param tabWidth |
| * tab width in source files as number of blanks |
| * |
| */ |
| protected InputStreamSourceFileLocator(final String encoding, |
| final int tabWidth) { |
| this.encoding = encoding; |
| this.tabWidth = tabWidth; |
| } |
| |
| public Reader getSourceFile(final String packageName, final String fileName) |
| throws IOException { |
| final InputStream in; |
| if (packageName.length() > 0) { |
| in = getSourceStream(packageName + "/" + fileName); |
| } else { |
| in = getSourceStream(fileName); |
| } |
| |
| if (in == null) { |
| return null; |
| } |
| |
| if (encoding == null) { |
| return new InputStreamReader(in); |
| } else { |
| return new InputStreamReader(in, encoding); |
| } |
| } |
| |
| public int getTabWidth() { |
| return tabWidth; |
| } |
| |
| /** |
| * Tries to locate the given source file and opens its binary content. |
| * |
| * @param path |
| * local path to the resource |
| * @return stream if the file could be located, <code>null</code> otherwise |
| * @throws IOException |
| * in case of problems while opening the stream |
| */ |
| protected abstract InputStream getSourceStream(String path) |
| throws IOException; |
| |
| } |