org.sonarsource.nodejs.BundleUtils Maven / Gradle / Ivy
/*
* SonarQube JavaScript Plugin
* Copyright (C) 2011-2019 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonarsource.nodejs;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Objects;
import org.apache.commons.compress.archivers.ArchiveEntry;
import org.apache.commons.compress.archivers.ArchiveInputStream;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
import org.apache.commons.compress.compressors.xz.XZCompressorInputStream;
import org.apache.commons.compress.utils.IOUtils;
public class BundleUtils {
private BundleUtils() {
// do not instantiate - utility class
}
public static void extractFromClasspath(InputStream resource, Path targetPath) throws IOException {
Objects.requireNonNull(resource);
try (InputStream xzi = new XZCompressorInputStream(new BufferedInputStream(resource));
ArchiveInputStream archive = new TarArchiveInputStream(xzi)) {
ArchiveEntry entry;
while ((entry = archive.getNextEntry()) != null) {
if (!archive.canReadEntryData(entry)) {
throw new IllegalStateException("Failed to extract bundle");
}
File entryFile = entryPath(targetPath, entry).toFile();
if (entry.isDirectory()) {
if (!entryFile.isDirectory() && !entryFile.mkdirs()) {
throw new IOException("failed to create directory " + entryFile);
}
} else {
File parent = entryFile.getParentFile();
if (!parent.isDirectory() && !parent.mkdirs()) {
throw new IOException("failed to create directory " + parent);
}
try (OutputStream os = Files.newOutputStream(entryFile.toPath())) {
IOUtils.copy(archive, os);
}
}
}
}
}
private static Path entryPath(Path targetPath, ArchiveEntry entry) {
Path entryPath = targetPath.resolve(entry.getName());
if (!entryPath.startsWith(targetPath)) {
throw new IllegalStateException("Archive entry " + entry.getName() + " is not within " + targetPath);
}
return entryPath;
}
}