66 lines
2.3 KiB
Java
66 lines
2.3 KiB
Java
package the.bytecode.club.bytecodeviewer.util;
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// Copyright 2017 Robert Grosse
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import java.net.URI;
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import java.nio.file.FileSystem;
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import java.nio.file.FileSystems;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.stream.Stream;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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public class JRTExtractor {
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public static void extractRT(String path) throws Throwable {
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FileSystem fs = FileSystems.getFileSystem(URI.create("jrt:/"));
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try (ZipOutputStream zipStream = new ZipOutputStream(Files.newOutputStream(Paths.get(path)));
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Stream<Path> stream = Files.walk(fs.getPath("/"))) {
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stream.forEach(p -> {
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if (!Files.isRegularFile(p)) {
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return;
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}
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try {
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byte[] data = Files.readAllBytes(p);
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List<String> list = new ArrayList<>();
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p.iterator().forEachRemaining(p2 -> list.add(p2.toString()));
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assert list.remove(0).equals("modules");
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if (!list.get(list.size() - 1).equals("module-info.class")) {
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list.remove(0);
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}
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list.remove(0);
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String outPath = String.join("/", list);
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if (!outPath.endsWith("module-info.class")) {
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ZipEntry ze = new ZipEntry(outPath);
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zipStream.putNextEntry(ze);
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zipStream.write(data);
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}
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} catch (Throwable t) {
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throw new RuntimeException(t);
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}
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});
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}
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}
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}
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