108 lines
3.7 KiB
Java
108 lines
3.7 KiB
Java
/*
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* Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.InputStream;
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import java.io.IOException;
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import java.util.jar.JarFile;
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import java.util.jar.Manifest;
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import java.util.zip.ZipFile;
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import static java.nio.charset.StandardCharsets.UTF_8;
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/**
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* Helper class.
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*/
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public class Utils {
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static void createFiles(String... filenames) throws IOException {
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for (String filename : filenames) {
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new File(filename).createNewFile();
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}
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}
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static void printNonPrintableCharactersEscaped(byte[] manifest)
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throws IOException {
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// keep byte sequences encoding multi-byte UTF-8 encoded and composite
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// characters together as much as possible before decoding into a String
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ByteArrayOutputStream lineBuf = new ByteArrayOutputStream();
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for (int i = 0; i < manifest.length; i++) {
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switch (manifest[i]) {
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case '\t':
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lineBuf.write("\\t".getBytes(UTF_8));
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break;
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case '\r':
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lineBuf.write("\\r".getBytes(UTF_8));
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if (i + 1 >= manifest.length || manifest[i + 1] != '\n') {
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System.out.println(lineBuf.toString(UTF_8));
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lineBuf.reset();
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}
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break;
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case '\n':
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lineBuf.write("\\n".getBytes(UTF_8));
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System.out.println(lineBuf.toString(UTF_8));
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lineBuf.reset();
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break;
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default:
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lineBuf.write(manifest[i]);
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}
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}
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if (lineBuf.size() > 0) {
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System.out.println(lineBuf.toString(UTF_8));
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}
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}
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static void echoManifest(byte[] manifest, String msg) throws IOException {
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System.out.println("-".repeat(72));
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System.out.println(msg);
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System.out.println("-".repeat(72));
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printNonPrintableCharactersEscaped(manifest);
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System.out.println("-".repeat(72));
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}
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static byte[] readJarManifestBytes(String jarFilename) throws IOException {
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return readJarEntryBytes(jarFilename, JarFile.MANIFEST_NAME);
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}
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static byte[] readJarEntryBytes(String jarFilename, String jarEntryname)
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throws IOException {
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try (
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ZipFile jar = new ZipFile(jarFilename);
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InputStream is = jar.getInputStream(jar.getEntry(jarEntryname));
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) {
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return is.readAllBytes();
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}
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}
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static String escapeStringWithNumbers(String lineBreak) {
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String escaped = "";
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byte[] bytes = lineBreak.getBytes(UTF_8);
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for (int i = 0; i < bytes.length; i++) {
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escaped += bytes[i];
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}
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return escaped;
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}
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}
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