117 lines
4.0 KiB
Java
117 lines
4.0 KiB
Java
package com.thebrokenrail.freshcoffee.util;
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import org.apache.commons.compress.archivers.ArchiveEntry;
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import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
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import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.UncheckedIOException;
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import java.net.URL;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipInputStream;
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public class ExtractUtil {
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private static String stripFirstComponent(String file) {
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String path = new File(file).getPath();
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String[] parts = path.split(File.separator);
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List<String> newParts = new ArrayList<>(Arrays.asList(parts).subList(1, parts.length));
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return String.join(File.separator, newParts);
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}
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public static void extract(URL url, File dir) {
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Util.getLogger().info("Downloading/Extracting: " + url.toString());
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try (InputStream stream = url.openConnection().getInputStream()) {
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if (url.getFile().endsWith(".tar.gz")) {
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extractTarGz(stream, dir);
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} else {
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extractZip(stream, dir);
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}
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} catch (IOException e) {
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throw new UncheckedIOException(e);
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}
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}
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private static void log(File file) {
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Util.getLogger().debug("Extracting: " + file.getAbsolutePath());
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}
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private static void extractTarGz(InputStream stream, File dir) throws IOException {
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try (TarArchiveInputStream tar = new TarArchiveInputStream(new GzipCompressorInputStream(stream))) {
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byte[] buffer = new byte[1024];
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ArchiveEntry entry = tar.getNextEntry();
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while (entry != null) {
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String fileName = entry.getName();
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File newFile = new File(dir, stripFirstComponent(fileName));
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if (newFile.getParentFile() != null) {
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//noinspection ResultOfMethodCallIgnored
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newFile.getParentFile().mkdirs();
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}
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log(newFile);
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if (!entry.isDirectory()) {
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FileOutputStream output = new FileOutputStream(newFile);
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int len;
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while ((len = tar.read(buffer)) > 0) {
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output.write(buffer, 0, len);
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}
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output.close();
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//noinspection ResultOfMethodCallIgnored
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newFile.setExecutable(true);
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} else {
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//noinspection ResultOfMethodCallIgnored
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newFile.mkdir();
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}
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entry = tar.getNextEntry();
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}
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}
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}
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private static void extractZip(InputStream stream, File dir) throws IOException {
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try (ZipInputStream zip = new ZipInputStream(stream)) {
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byte[] buffer = new byte[1024];
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ZipEntry entry = zip.getNextEntry();
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while (entry != null) {
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String fileName = entry.getName();
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File newFile = new File(dir, stripFirstComponent(fileName));
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if (newFile.getParentFile() != null) {
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//noinspection ResultOfMethodCallIgnored
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newFile.getParentFile().mkdirs();
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}
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log(newFile);
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if (!entry.isDirectory()) {
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FileOutputStream output = new FileOutputStream(newFile);
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int len;
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while ((len = zip.read(buffer)) > 0) {
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output.write(buffer, 0, len);
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}
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output.close();
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//noinspection ResultOfMethodCallIgnored
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newFile.setExecutable(true);
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} else {
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//noinspection ResultOfMethodCallIgnored
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newFile.mkdir();
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}
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entry = zip.getNextEntry();
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}
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}
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}
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}
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