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80 lines
3.0 KiB
Java
80 lines
3.0 KiB
Java
/*
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* This file is part of Arduino.
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*
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* Copyright 2015 Arduino LLC (http://www.arduino.cc/)
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*
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* Arduino is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* As a special exception, you may use this file as part of a free software
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* library without restriction. Specifically, if other files instantiate
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* templates or use macros or inline functions from this file, or you compile
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* this file and link it with other files to produce an executable, this
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* file does not by itself cause the resulting executable to be covered by
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* the GNU General Public License. This exception does not however
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* invalidate any other reasons why the executable file might be covered by
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* the GNU General Public License.
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*/
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package cc.arduino.contributions;
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import cc.arduino.utils.Progress;
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import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
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import org.apache.commons.compress.compressors.gzip.GzipUtils;
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import org.apache.commons.compress.utils.IOUtils;
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import java.io.*;
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import java.net.URL;
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public class GZippedJsonDownloader {
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private final DownloadableContributionsDownloader downloader;
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private final URL url;
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private final URL gzippedUrl;
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public GZippedJsonDownloader(DownloadableContributionsDownloader downloader, URL url, URL gzippedUrl) {
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this.downloader = downloader;
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this.url = url;
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this.gzippedUrl = gzippedUrl;
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}
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public void download(File tmpFile, Progress progress, String statusText) throws Exception {
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try {
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new JsonDownloader(downloader, gzippedUrl).download(tmpFile, progress, statusText);
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File gzipTmpFile = new File(tmpFile.getParentFile(), GzipUtils.getCompressedFilename(tmpFile.getName()));
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tmpFile.renameTo(gzipTmpFile);
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decompress(gzipTmpFile, tmpFile);
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} catch (Exception e) {
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new JsonDownloader(downloader, url).download(tmpFile, progress, statusText);
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}
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}
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private void decompress(File gzipTmpFile, File tmpFile) throws IOException {
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OutputStream os = null;
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GzipCompressorInputStream gzipIs = null;
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try {
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os = new FileOutputStream(tmpFile);
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gzipIs = new GzipCompressorInputStream(new FileInputStream(gzipTmpFile));
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final byte[] buffer = new byte[4096];
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int n;
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while (-1 != (n = gzipIs.read(buffer))) {
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os.write(buffer, 0, n);
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}
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} finally {
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IOUtils.closeQuietly(os);
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IOUtils.closeQuietly(gzipIs);
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}
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}
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}
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