Example usage for java.util.zip GZIPInputStream read

Introduction

In this page you can find the example usage for java.util.zip GZIPInputStream read.

Prototype

public int read(byte b[]) throws IOException 

Source Link

Document

Reads up to b.length bytes of data from this input stream into an array of bytes.

Usage

From source file:org.asynchttpclient.request.body.multipart.MultipartUploadTest.java

/**
 * Test that the files were sent, based on the response from the servlet
 * // w  w w.java2  s  . c  o m
 * @param expectedContents
 * @param sourceFiles
 * @param r
 * @param deflate
 */
private void testSentFile(List<String> expectedContents, List<File> sourceFiles, Response r,
        List<Boolean> deflate) {
    String content = r.getResponseBody();
    assertNotNull("===>" + content);
    logger.debug(content);

    String[] contentArray = content.split("\\|\\|");
    // TODO: this fail on win32
    assertEquals(contentArray.length, 2);

    String tmpFiles = contentArray[1];
    assertNotNull(tmpFiles);
    assertTrue(tmpFiles.trim().length() > 2);
    tmpFiles = tmpFiles.substring(1, tmpFiles.length() - 1);

    String[] responseFiles = tmpFiles.split(",");
    assertNotNull(responseFiles);
    assertEquals(responseFiles.length, sourceFiles.size());

    logger.debug(Arrays.toString(responseFiles));

    int i = 0;
    for (File sourceFile : sourceFiles) {

        File tmp = null;
        try {

            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            byte[] sourceBytes = null;
            try (FileInputStream instream = new FileInputStream(sourceFile)) {
                byte[] buf = new byte[8092];
                int len = 0;
                while ((len = instream.read(buf)) > 0) {
                    baos.write(buf, 0, len);
                }
                logger.debug("================");
                logger.debug("Length of file: " + baos.toByteArray().length);
                logger.debug("Contents: " + Arrays.toString(baos.toByteArray()));
                logger.debug("================");
                System.out.flush();
                sourceBytes = baos.toByteArray();
            }

            tmp = new File(responseFiles[i].trim());
            logger.debug("==============================");
            logger.debug(tmp.getAbsolutePath());
            logger.debug("==============================");
            System.out.flush();
            assertTrue(tmp.exists());

            byte[] bytes;
            try (FileInputStream instream = new FileInputStream(tmp)) {
                ByteArrayOutputStream baos2 = new ByteArrayOutputStream();
                byte[] buf = new byte[8092];
                int len = 0;
                while ((len = instream.read(buf)) > 0) {
                    baos2.write(buf, 0, len);
                }
                bytes = baos2.toByteArray();
                assertEquals(bytes, sourceBytes);
            }

            if (!deflate.get(i)) {
                String helloString = new String(bytes);
                assertEquals(helloString, expectedContents.get(i));
            } else {
                try (FileInputStream instream = new FileInputStream(tmp)) {
                    ByteArrayOutputStream baos3 = new ByteArrayOutputStream();
                    GZIPInputStream deflater = new GZIPInputStream(instream);
                    try {
                        byte[] buf3 = new byte[8092];
                        int len3 = 0;
                        while ((len3 = deflater.read(buf3)) > 0) {
                            baos3.write(buf3, 0, len3);
                        }
                    } finally {
                        deflater.close();
                    }

                    String helloString = new String(baos3.toByteArray());

                    assertEquals(expectedContents.get(i), helloString);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            fail("Download Exception");
        } finally {
            if (tmp != null)
                FileUtils.deleteQuietly(tmp);
            i++;
        }
    }
}

---

From source file:net.sf.ehcache.constructs.web.PageInfoTest.java

private byte[] ungzip3(final byte[] gzip) throws IOException {
    int size = 0;
    int counter = 0;
    GZIPInputStream gzipInputStream = new GZIPInputStream(new ByteArrayInputStream(gzip));
    int bytesRead = 0;
    byte[] buffer = new byte[500000];
    byte[] tempBuffer = new byte[4096];
    counter = 0;/*from  ww  w.  j a va 2s  .c  om*/
    while (bytesRead != -1) {
        bytesRead = gzipInputStream.read(tempBuffer);
        if (bytesRead != -1) {
            System.arraycopy(tempBuffer, 0, buffer, counter, bytesRead);
            counter += bytesRead;
        }
    }
    gzipInputStream.close();
    size = counter;
    byte[] unzipped = new byte[size];
    System.arraycopy(buffer, 0, unzipped, 0, counter);
    return unzipped;
}

---

From source file:org.nuxeo.client.internals.util.Base64.java

/**
 * Decodes data from Base64 notation, automatically detecting gzip-compressed data and decompressing it.
 *
 * @param s the string to decode/* w w  w .j  a v  a  2 s  .com*/
 * @return the decoded data
 * @since 1.4
 */
public static byte[] decode(String s) {
    byte[] bytes;
    try {
        bytes = s.getBytes(PREFERRED_ENCODING);
    } // end try
    catch (UnsupportedEncodingException uee) {
        bytes = s.getBytes();
    } // end catch
      // </change>

    // Decode
    bytes = decode(bytes, 0, bytes.length);

    // Check to see if it's gzip-compressed
    // GZIP Magic Two-Byte Number: 0x8b1f (35615)
    if (bytes != null && bytes.length >= 4) {

        int head = ((int) bytes[0] & 0xff) | ((bytes[1] << 8) & 0xff00);
        if (java.util.zip.GZIPInputStream.GZIP_MAGIC == head) {
            java.io.ByteArrayInputStream bais = null;
            java.util.zip.GZIPInputStream gzis = null;
            java.io.ByteArrayOutputStream baos = null;
            byte[] buffer = new byte[2048];
            int length = 0;

            try {
                baos = new java.io.ByteArrayOutputStream();
                bais = new java.io.ByteArrayInputStream(bytes);
                gzis = new java.util.zip.GZIPInputStream(bais);

                while ((length = gzis.read(buffer)) >= 0) {
                    baos.write(buffer, 0, length);
                } // end while: reading input

                // No error? Get new bytes.
                bytes = baos.toByteArray();

            } // end try
            catch (java.io.IOException e) {
                // Just return originally-decoded bytes
            } // end catch
            finally {
                IOUtils.closeQuietly(baos);
                IOUtils.closeQuietly(gzis);
                IOUtils.closeQuietly(bais);
            } // end finally

        } // end if: gzipped
    } // end if: bytes.length >= 2

    return bytes;
}

---

From source file:org.ecoinformatics.seek.datasource.EcogridGZippedDataCacheItem.java

/**
 * This method overwrite the super class - EcogridCompressedDataCacheItem.
 * It specifys the gunzip method to uncompress the file. The new ungzip file
 * will be the the cacheitem file name without the file extension. An file
 * location will be the cachedata/unzip/cacheitemname/ If this is tar file
 * too, we will untar it after ungzip it.
 * /*from  w ww . j  a  v  a 2 s. co  m*/
 * @throws Exception
 */
public void unCompressCacheItem() throws Exception {
    if (unCompressedFilePath != null) {
        log.debug("At unCompressCacheItem method in Zip ojbect");
        // read the gzip file and ungzip it
        GZIPInputStream gZipFileReader = new GZIPInputStream(new FileInputStream(getFile()));
        String unGZipFileName = removeFileExtension(getAbsoluteFileName());
        String unGZipFilePath = unCompressedFilePath + File.separator + unGZipFileName;
        log.debug("The unGzip aboslute file path is " + unGZipFilePath);
        File unGzipFile = new File(unGZipFilePath);
        FileOutputStream fileWriter = new FileOutputStream(unGzipFile);
        byte[] array = new byte[3000 * 1024];
        int len;
        while ((len = gZipFileReader.read(array)) >= 0) {
            fileWriter.write(array, 0, len);
        }
        gZipFileReader.close();
        fileWriter.close();
        // if this is a tar file too, will untar it.
        if (getIsTarFile()) {
            if (unCompressedFilePath != null) {
                log.debug("untar the file after ungzip");
                EcogridTarArchivedDataCacheItem.extractTarFile(unGZipFilePath, unCompressedCacheItemDir);
            }
        }
        unCompressedFileList = unCompressedCacheItemDir.list();
    }
}

---

From source file:net.sf.ehcache.constructs.web.PageInfoTest.java

private byte[] ungzip5(final byte[] gzip) throws IOException {
    int size = 0;
    int counter = 0;
    GZIPInputStream gzipInputStream = new GZIPInputStream(new ByteArrayInputStream(gzip));
    int bytesRead = 0;
    byte[] buffer = new byte[32768];
    byte[] tempBuffer = new byte[4096];
    counter = 0;/*from ww  w  . j  av a  2  s . c  o  m*/
    while (bytesRead != -1) {
        bytesRead = gzipInputStream.read(tempBuffer);
        if (bytesRead != -1) {
            if (buffer.length < counter + bytesRead) {
                byte[] newBuffer = new byte[buffer.length + 32768];
                System.arraycopy(buffer, 0, newBuffer, 0, counter);
                buffer = newBuffer;
            }
            System.arraycopy(tempBuffer, 0, buffer, counter, bytesRead);
            counter += bytesRead;
        }
    }
    gzipInputStream.close();
    size = counter;
    byte[] unzipped = new byte[size];
    System.arraycopy(buffer, 0, unzipped, 0, counter);
    return unzipped;
}

---

From source file:org.nuxeo.ecm.platform.forms.layout.io.Base64.java

/**
 * Decodes data from Base64 notation, automatically detecting gzip-compressed data and decompressing it.
 *
 * @param s the string to decode/*from   w  ww. jav  a 2  s  .  c  om*/
 * @return the decoded data
 * @since 1.4
 */
public static byte[] decode(String s) {
    byte[] bytes;
    try {
        bytes = s.getBytes(PREFERRED_ENCODING);
    } // end try
    catch (java.io.UnsupportedEncodingException uee) {
        bytes = s.getBytes();
    } // end catch
      // </change>

    // Decode
    bytes = decode(bytes, 0, bytes.length);

    // Check to see if it's gzip-compressed
    // GZIP Magic Two-Byte Number: 0x8b1f (35615)
    if (bytes != null && bytes.length >= 4) {

        int head = (bytes[0] & 0xff) | ((bytes[1] << 8) & 0xff00);
        if (java.util.zip.GZIPInputStream.GZIP_MAGIC == head) {
            java.io.ByteArrayInputStream bais = null;
            java.util.zip.GZIPInputStream gzis = null;
            java.io.ByteArrayOutputStream baos = null;
            byte[] buffer = new byte[2048];
            int length = 0;

            try {
                baos = new java.io.ByteArrayOutputStream();
                bais = new java.io.ByteArrayInputStream(bytes);
                gzis = new java.util.zip.GZIPInputStream(bais);

                while ((length = gzis.read(buffer)) >= 0) {
                    baos.write(buffer, 0, length);
                } // end while: reading input

                // No error? Get new bytes.
                bytes = baos.toByteArray();

            } // end try
            catch (java.io.IOException e) {
                // Just return originally-decoded bytes
            } // end catch
            finally {
                IOUtils.closeQuietly(baos);
                IOUtils.closeQuietly(gzis);
                IOUtils.closeQuietly(bais);
            } // end finally

        } // end if: gzipped
    } // end if: bytes.length >= 2

    return bytes;
}

---

From source file:org.mule.util.Base64.java

/**
 * Decodes data from Base64 notation, automatically detecting gzip-compressed
 * data and decompressing it./*from  w ww .  ja v  a 2s  .c  o  m*/
 * 
 * @param s the string to decode
 * @return the decoded data
 * @since 1.4
 */
public static byte[] decode(String s) {
    byte[] bytes;
    try {
        bytes = s.getBytes(PREFERRED_ENCODING);
    } // end try
    catch (UnsupportedEncodingException uee) {
        bytes = s.getBytes();
    } // end catch
      // </change>

    // Decode
    bytes = decode(bytes, 0, bytes.length);

    // Check to see if it's gzip-compressed
    // GZIP Magic Two-Byte Number: 0x8b1f (35615)
    if (bytes != null && bytes.length >= 4) {

        int head = (bytes[0] & 0xff) | ((bytes[1] << 8) & 0xff00);
        if (GZIPInputStream.GZIP_MAGIC == head) {
            ByteArrayInputStream bais = null;
            GZIPInputStream gzis = null;
            ByteArrayOutputStream baos = null;
            byte[] buffer = new byte[4096];
            int length = 0;

            try {
                baos = new ByteArrayOutputStream(4096);
                bais = new ByteArrayInputStream(bytes);
                gzis = new GZIPInputStream(bais);

                while ((length = gzis.read(buffer)) >= 0) {
                    baos.write(buffer, 0, length);
                } // end while: reading input

                // No error? Get new bytes.
                bytes = baos.toByteArray();

            } // end try
            catch (IOException e) {
                // Just return originally-decoded bytes
            } // end catch
            finally {
                IOUtils.closeQuietly(baos);
                IOUtils.closeQuietly(gzis);
                IOUtils.closeQuietly(bais);
            } // end finally

        } // end if: gzipped
    } // end if: bytes.length >= 2

    return bytes;
}

---

From source file:org.nuxeo.ecm.automation.client.jaxrs.util.Base64.java

/**
 * Decodes data from Base64 notation, automatically detecting gzip-compressed data and decompressing it.
 *
 * @param s the string to decode// w ww .  j  ava  2 s  .  c om
 * @return the decoded data
 * @since 1.4
 */
public static byte[] decode(String s) {
    byte[] bytes;
    try {
        bytes = s.getBytes(PREFERRED_ENCODING);
    } // end try
    catch (java.io.UnsupportedEncodingException uee) {
        bytes = s.getBytes();
    } // end catch
      // </change>

    // Decode
    bytes = decode(bytes, 0, bytes.length);

    // Check to see if it's gzip-compressed
    // GZIP Magic Two-Byte Number: 0x8b1f (35615)
    if (bytes != null && bytes.length >= 4) {

        int head = ((int) bytes[0] & 0xff) | ((bytes[1] << 8) & 0xff00);
        if (java.util.zip.GZIPInputStream.GZIP_MAGIC == head) {
            java.io.ByteArrayInputStream bais = null;
            java.util.zip.GZIPInputStream gzis = null;
            java.io.ByteArrayOutputStream baos = null;
            byte[] buffer = new byte[2048];
            int length = 0;

            try {
                baos = new java.io.ByteArrayOutputStream();
                bais = new java.io.ByteArrayInputStream(bytes);
                gzis = new java.util.zip.GZIPInputStream(bais);

                while ((length = gzis.read(buffer)) >= 0) {
                    baos.write(buffer, 0, length);
                } // end while: reading input

                // No error? Get new bytes.
                bytes = baos.toByteArray();

            } // end try
            catch (java.io.IOException e) {
                // Just return originally-decoded bytes
            } // end catch
            finally {
                IOUtils.closeQuietly(baos);
                IOUtils.closeQuietly(gzis);
                IOUtils.closeQuietly(bais);
            } // end finally

        } // end if: gzipped
    } // end if: bytes.length >= 2

    return bytes;
}

---

From source file:org.asynchttpclient.async.MultipartUploadTest.java

/**
 * Test that the files were sent, based on the response from the servlet
 * /*from  w  w w  . j  a  v a  2s. c o m*/
 * @param expectedContents
 * @param sourceFiles
 * @param r
 * @param deflate
 */
private void testSentFile(List<String> expectedContents, List<File> sourceFiles, Response r,
        List<Boolean> deflate) {
    String content = null;
    try {
        content = r.getResponseBody();
        assertNotNull("===>" + content);
        logger.debug(content);
    } catch (IOException e) {
        fail("Unable to obtain content");
    }

    String[] contentArray = content.split("\\|\\|");
    // TODO: this fail on win32
    assertEquals(contentArray.length, 2);

    String tmpFiles = contentArray[1];
    assertNotNull(tmpFiles);
    assertTrue(tmpFiles.trim().length() > 2);
    tmpFiles = tmpFiles.substring(1, tmpFiles.length() - 1);

    String[] responseFiles = tmpFiles.split(",");
    assertNotNull(responseFiles);
    assertEquals(responseFiles.length, sourceFiles.size());

    logger.debug(Arrays.toString(responseFiles));

    int i = 0;
    for (File sourceFile : sourceFiles) {

        FileInputStream instream = null;
        File tmp = null;
        try {

            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            byte[] sourceBytes = null;
            try {
                instream = new FileInputStream(sourceFile);
                byte[] buf = new byte[8092];
                int len = 0;
                while ((len = instream.read(buf)) > 0) {
                    baos.write(buf, 0, len);
                }
                logger.debug("================");
                logger.debug("Length of file: " + baos.toByteArray().length);
                logger.debug("Contents: " + Arrays.toString(baos.toByteArray()));
                logger.debug("================");
                System.out.flush();
                sourceBytes = baos.toByteArray();
            } finally {
                IOUtils.closeQuietly(instream);
            }

            tmp = new File(responseFiles[i].trim());
            logger.debug("==============================");
            logger.debug(tmp.getAbsolutePath());
            logger.debug("==============================");
            System.out.flush();
            assertTrue(tmp.exists());

            instream = new FileInputStream(tmp);
            ByteArrayOutputStream baos2 = new ByteArrayOutputStream();
            byte[] buf = new byte[8092];
            int len = 0;
            while ((len = instream.read(buf)) > 0) {
                baos2.write(buf, 0, len);
            }
            IOUtils.closeQuietly(instream);

            assertEquals(baos2.toByteArray(), sourceBytes);

            if (!deflate.get(i)) {

                String helloString = new String(baos2.toByteArray());
                assertEquals(helloString, expectedContents.get(i));
            } else {
                instream = new FileInputStream(tmp);

                ByteArrayOutputStream baos3 = new ByteArrayOutputStream();
                GZIPInputStream deflater = new GZIPInputStream(instream);
                try {
                    byte[] buf3 = new byte[8092];
                    int len3 = 0;
                    while ((len3 = deflater.read(buf3)) > 0) {
                        baos3.write(buf3, 0, len3);
                    }
                } finally {
                    deflater.close();
                }

                String helloString = new String(baos3.toByteArray());

                assertEquals(expectedContents.get(i), helloString);

            }
        } catch (Exception e) {
            e.printStackTrace();
            fail("Download Exception");
        } finally {
            if (tmp != null)
                FileUtils.deleteQuietly(tmp);
            IOUtils.closeQuietly(instream);
            i++;
        }
    }
}

---

From source file:net.fabricmc.loom.task.DownloadTask.java

@TaskAction
public void download() {
    try {//from w  w  w.j a  va 2 s. co  m
        LoomGradleExtension extension = this.getProject().getExtensions().getByType(LoomGradleExtension.class);

        downloadMcJson(extension, getLogger());

        Gson gson = new Gson();
        Version version = gson.fromJson(new FileReader(Constants.MINECRAFT_JSON.get(extension)), Version.class);

        if (!Constants.MINECRAFT_CLIENT_JAR.get(extension).exists() || !Checksum
                .equals(Constants.MINECRAFT_CLIENT_JAR.get(extension), version.downloads.get("client").sha1)) {
            this.getLogger().lifecycle(":downloading client");
            FileUtils.copyURLToFile(new URL(version.downloads.get("client").url),
                    Constants.MINECRAFT_CLIENT_JAR.get(extension));
        }

        if (!Constants.MINECRAFT_SERVER_JAR.get(extension).exists() || !Checksum
                .equals(Constants.MINECRAFT_SERVER_JAR.get(extension), version.downloads.get("server").sha1)) {
            this.getLogger().lifecycle(":downloading server");
            FileUtils.copyURLToFile(new URL(version.downloads.get("server").url),
                    Constants.MINECRAFT_SERVER_JAR.get(extension));
        }

        if (!Constants.POMF_DIR.get(extension).exists()) {
            Constants.POMF_DIR.get(extension).mkdir();
        }

        if (!Constants.MAPPINGS_ZIP.get(extension).exists() && extension.hasPomf()) {
            this.getLogger().lifecycle(":downloading mappings");
            try {
                FileUtils.copyURLToFile(
                        new URL("http://modmuss50.me:8080/job/FabricMC/job/pomf/job/" + extension.version + "/"
                                + extension.pomfVersion + "/artifact/build/libs/pomf-enigma-"
                                + extension.version + "." + extension.pomfVersion + ".zip"),
                        Constants.MAPPINGS_ZIP.get(extension));
            } catch (Exception e) {
                throw new RuntimeException("Failed to download mappings", e);
            }

        }
        if (!extension.hasPomf()) {
            if (Constants.MAPPINGS_DIR_LOCAL.get(extension).exists()) {
                if (Constants.MAPPINGS_TINY_GZ_LOCAL.get(extension).exists()
                        && Constants.MAPPINGS_ZIP_LOCAL.get(extension).exists()) {
                    this.getLogger().lifecycle(":using local mappings!");
                    extension.localMappings = true;

                    //We delete this to make sure they are always re extracted.
                    deleteIfExists(Constants.MAPPINGS_ZIP.get(extension));
                    deleteIfExists(Constants.MAPPINGS_TINY_GZ.get(extension));
                    deleteIfExists(Constants.MAPPINGS_TINY.get(extension));
                    deleteIfExists(Constants.MAPPINGS_DIR.get(extension));

                    Constants.MAPPINGS_TINY_GZ = Constants.MAPPINGS_TINY_GZ_LOCAL;
                    Constants.MAPPINGS_ZIP = Constants.MAPPINGS_ZIP_LOCAL;
                }
            }
        }

        if (!Constants.MAPPINGS_TINY.get(extension).exists() && extension.hasPomf()) {
            if (!Constants.MAPPINGS_TINY_GZ.get(extension).exists() && !extension.localMappings) {
                getLogger().lifecycle(":downloading tiny mappings");
                try {
                    FileUtils.copyURLToFile(
                            new URL("http://modmuss50.me:8080/job/FabricMC/job/pomf/job/" + extension.version
                                    + "/" + extension.pomfVersion + "/artifact/build/libs/pomf-tiny-"
                                    + extension.version + "." + extension.pomfVersion + ".gz"),
                            Constants.MAPPINGS_TINY_GZ.get(extension));
                } catch (Exception e) {
                    throw new RuntimeException("Failed to download mappings", e);
                }
            }
            GZIPInputStream gzipInputStream = new GZIPInputStream(
                    new FileInputStream(Constants.MAPPINGS_TINY_GZ.get(extension)));
            FileOutputStream fileOutputStream = new FileOutputStream(Constants.MAPPINGS_TINY.get(extension));
            int length;
            byte[] buffer = new byte[1024];
            while ((length = gzipInputStream.read(buffer)) > 0) {
                fileOutputStream.write(buffer, 0, length);
            }
            gzipInputStream.close();
            fileOutputStream.close();
        }

        DependencyHandler dependencyHandler = getProject().getDependencies();

        if (getProject().getConfigurations().getByName(Constants.CONFIG_MC_DEPENDENCIES)
                .getState() == Configuration.State.UNRESOLVED) {
            for (Version.Library library : version.libraries) {
                if (library.allowed() && library.getFile(extension) != null) {
                    // By default, they are all available on all sides
                    String configName = Constants.CONFIG_MC_DEPENDENCIES;
                    if (library.name.contains("java3d") || library.name.contains("paulscode")
                            || library.name.contains("lwjgl") || library.name.contains("twitch")
                            || library.name.contains("jinput") || library.name.contains("text2speech")
                            || library.name.contains("objc")) {
                        configName = Constants.CONFIG_MC_DEPENDENCIES_CLIENT;
                    }
                    dependencyHandler.add(configName, library.getArtifactName());
                }
            }
        }

        if (getProject().getConfigurations().getByName(Constants.CONFIG_NATIVES)
                .getState() == Configuration.State.UNRESOLVED) {
            version.libraries.stream().filter(lib -> lib.natives != null)
                    .forEach(lib -> dependencyHandler.add(Constants.CONFIG_NATIVES, lib.getArtifactName()));
        }

        // Force add LaunchWrapper
        dependencyHandler.add(Constants.CONFIG_MC_DEPENDENCIES, "net.minecraft:launchwrapper:1.12");

        Version.AssetIndex assetIndex = version.assetIndex;

        File assets = new File(extension.getFabricUserCache(), "assets-" + extension.version);
        if (!assets.exists()) {
            assets.mkdirs();
        }

        File assetsInfo = new File(assets, "indexes" + File.separator + assetIndex.id + ".json");
        if (!assetsInfo.exists() || !Checksum.equals(assetsInfo, assetIndex.sha1)) {
            this.getLogger().lifecycle(":downloading asset index");
            FileUtils.copyURLToFile(new URL(assetIndex.url), assetsInfo);
        }

        ProgressLogger progressLogger = ProgressLogger.getProgressFactory(getProject(), getClass().getName());
        progressLogger.start("Downloading assets...", "assets");
        AssetIndex index = new Gson().fromJson(new FileReader(assetsInfo), AssetIndex.class);
        Map<String, AssetObject> parent = index.getFileMap();
        final int totalSize = parent.size();
        int position = 0;
        this.getLogger().lifecycle(":downloading assets...");
        for (Map.Entry<String, AssetObject> entry : parent.entrySet()) {
            AssetObject object = entry.getValue();
            String sha1 = object.getHash();
            File file = new File(assets,
                    "objects" + File.separator + sha1.substring(0, 2) + File.separator + sha1);
            if (!file.exists() || !Checksum.equals(file, sha1)) {
                this.getLogger().debug(":downloading asset " + entry.getKey());
                FileUtils.copyURLToFile(new URL(Constants.RESOURCES_BASE + sha1.substring(0, 2) + "/" + sha1),
                        file);
            }
            String assetName = entry.getKey();
            int end = assetName.lastIndexOf("/") + 1;
            if (end > 0) {
                assetName = assetName.substring(end, assetName.length());
            }
            progressLogger.progress(assetName + " - " + position + "/" + totalSize + " ("
                    + (int) ((position / (double) totalSize) * 100) + "%) assets downloaded");
            position++;
        }
        progressLogger.completed();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

---

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