Example usage for java.util.zip ZipInputStream getNextEntry

Introduction

In this page you can find the example usage for java.util.zip ZipInputStream getNextEntry.

Prototype

public ZipEntry getNextEntry() throws IOException 

Source Link

Document

Reads the next ZIP file entry and positions the stream at the beginning of the entry data.

Usage

From source file:io.druid.java.util.common.CompressionUtils.java

/**
 * Decompress an input stream from a file, based on the filename.
 *///w  ww  .j av  a 2s.  co m
public static InputStream decompress(final InputStream in, final String fileName) throws IOException {
    if (fileName.endsWith(GZ_SUFFIX)) {
        return gzipInputStream(in);
    } else if (fileName.endsWith(BZ2_SUFFIX)) {
        return new BZip2CompressorInputStream(in, true);
    } else if (fileName.endsWith(XZ_SUFFIX)) {
        return new XZCompressorInputStream(in, true);
    } else if (fileName.endsWith(ZIP_SUFFIX)) {
        // This reads the first file in the archive.
        final ZipInputStream zipIn = new ZipInputStream(in, StandardCharsets.UTF_8);
        try {
            final ZipEntry nextEntry = zipIn.getNextEntry();
            if (nextEntry == null) {
                zipIn.close();

                // No files in the archive - return an empty stream.
                return new ByteArrayInputStream(new byte[0]);
            }
            return zipIn;
        } catch (IOException e) {
            try {
                zipIn.close();
            } catch (IOException e2) {
                e.addSuppressed(e2);
            }
            throw e;
        }
    } else {
        return in;
    }
}

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From source file:Main.java

public static boolean unzipFile(InputStream fis, String destDir) {
    final byte[] buffer = new byte[4096];
    ZipInputStream zis = null;
    Log.e("Unzip", "destDir = " + destDir);
    try {/*from  w ww .  j a v a  2 s  .  co  m*/
        // make sure the directory is existent
        File dstFile = new File(destDir);
        if (!dstFile.exists()) {
            dstFile.mkdirs();
        } else {
            int fileLenght = dstFile.listFiles().length;
            if (fileLenght >= 2) {
                return true;
            }
        }
        zis = new ZipInputStream(fis);
        ZipEntry entry;

        while ((entry = zis.getNextEntry()) != null) {
            String fileName = entry.getName();

            if (entry.isDirectory()) {
                new File(destDir, fileName).mkdirs();

            } else {
                BufferedOutputStream bos = new BufferedOutputStream(
                        new FileOutputStream(new File(destDir, fileName)));
                int lenRead;

                while ((lenRead = zis.read(buffer)) != -1) {
                    bos.write(buffer, 0, lenRead);
                }

                bos.close();
            }

            zis.closeEntry();
        }

        return true;

    } catch (IOException e) {
        e.printStackTrace();

    } finally {
        if (zis != null) {
            try {
                zis.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return false;
}

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From source file:edu.indiana.d2i.htrc.dataapi.DataAPIWrapper.java

private static void openZipStream(InputStream inputStream, Map<String, Map<String, String>> volPageContents,
        boolean isConcat) throws IOException {
    ZipInputStream zipInputStream = new ZipInputStream(inputStream);
    ZipEntry zipEntry = null;/* w  ww. ja  v  a 2s .c  o  m*/
    String currentVolID = null;

    if (!isConcat) {
        while ((zipEntry = zipInputStream.getNextEntry()) != null) {
            String name = zipEntry.getName();

            /**
             * check whether encounter ERROR.err
             */
            if (ERROR_FNAME.equals(name)) {
                log.error("Encountered ERROR.err file in the zip stream");
                // log the content of ERROR.err file
                log.error("*************** Start of Content of ERROR.err ***************");
                StringBuilder sb = new StringBuilder();
                BufferedReader reader = new BufferedReader(new InputStreamReader(zipInputStream));
                String line = null;
                while ((line = reader.readLine()) != null)
                    sb.append(line + "\n");

                log.error(sb.toString());
                log.error("*************** End of Content of ERROR.err ***************");

                continue;
            }

            if (zipEntry.isDirectory()) {
                // get volume name
                currentVolID = name.split("/")[0];
                volPageContents.put(currentVolID, new HashMap<String, String>());

                if (log.isDebugEnabled())
                    log.debug("Encounter volueme directory : " + currentVolID);

            } else {
                String[] names = name.split("/");

                // each page is a separate entry
                //               assert names.length == 2;
                //               assert names[0].equals(currentVolID);

                // get page(s) content
                StringBuilder sb = new StringBuilder();
                BufferedReader reader = new BufferedReader(
                        new InputStreamReader(zipInputStream, Charset.forName("UTF-8")));
                String line = null;
                while ((line = reader.readLine()) != null)
                    sb.append(line + "\n");

                Map<String, String> contents = volPageContents.get(currentVolID);

                int idx = names[1].indexOf(".txt");
                //               assert idx != -1;

                contents.put(names[1].substring(0, idx), sb.toString());
            }
        }
    } else {
        while ((zipEntry = zipInputStream.getNextEntry()) != null) {
            assert !zipEntry.isDirectory();
            String name = zipEntry.getName();

            /**
             * check whether encounter ERROR.err
             */
            if (ERROR_FNAME.equals(name)) {
                log.error("Encountered ERROR.err file in the zip stream");
                // log the content of ERROR.err file
                log.error("*************** Start of Content of ERROR.err ***************");
                StringBuilder sb = new StringBuilder();
                BufferedReader reader = new BufferedReader(new InputStreamReader(zipInputStream));
                String line = null;
                while ((line = reader.readLine()) != null)
                    sb.append(line + "\n");

                log.error(sb.toString());
                log.error("*************** End of Content of ERROR.err ***************");

                continue;
            }

            int idx = name.indexOf(".txt");
            //            assert idx != -1;
            String cleanedVolId = name.substring(0, idx);

            if (log.isDebugEnabled())
                log.debug("Encounter volueme whole entry : " + cleanedVolId);

            StringBuilder sb = new StringBuilder();
            BufferedReader reader = new BufferedReader(
                    new InputStreamReader(zipInputStream, Charset.forName("UTF-8")));
            String line = null;
            while ((line = reader.readLine()) != null)
                sb.append(line + "\n");

            HashMap<String, String> concatContent = new HashMap<String, String>();
            concatContent.put(DataAPIWrapper.WHOLE_CONTENT, sb.toString());
            volPageContents.put(cleanedVolId, concatContent);
        }
    }
}

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From source file:com.ikon.util.ReportUtils.java

/**
 * Get report parameters/*  ww  w. jav  a  2 s . c o m*/
 */
public static List<FormElement> getReportParameters(long rpId)
        throws ParseException, DatabaseException, IOException {
    log.debug("getReportParameters({})", rpId);
    List<FormElement> params = null;
    ByteArrayInputStream bais = null;
    ZipInputStream zis = null;

    try {
        Report rp = ReportDAO.findByPk(rpId);
        bais = new ByteArrayInputStream(SecureStore.b64Decode(rp.getFileContent()));
        zis = new ZipInputStream(bais);
        ZipEntry zi = null;

        while ((zi = zis.getNextEntry()) != null) {
            if ("params.xml".equals(zi.getName())) {
                params = FormUtils.parseReportParameters(zis);
                break;
            }
        }

        if (params == null) {
            params = new ArrayList<FormElement>();
            log.warn("Report '{}' has no params.xml file", rpId);
        }

        // Activity log
        // UserActivity.log(session.getUserID(), "GET_REPORT_PARAMETERS", rpId+"", null);
    } catch (IOException e) {
        throw e;
    } finally {
        IOUtils.closeQuietly(zis);
        IOUtils.closeQuietly(bais);
    }

    log.debug("getReportParameters: {}", params);
    return params;
}

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From source file:com.openkm.util.ReportUtils.java

/**
 * Get report parameters/*from  w ww. ja v a 2 s  .c  o m*/
 */
public static List<FormElement> getReportParameters(long rpId)
        throws ParseException, DatabaseException, IOException {
    log.debug("getReportParameters({})", rpId);
    long begin = System.currentTimeMillis();
    List<FormElement> params = null;
    ByteArrayInputStream bais = null;
    ZipInputStream zis = null;

    try {
        Report rp = ReportDAO.findByPk(rpId);
        bais = new ByteArrayInputStream(SecureStore.b64Decode(rp.getFileContent()));
        zis = new ZipInputStream(bais);
        ZipEntry zi = null;

        while ((zi = zis.getNextEntry()) != null) {
            if ("params.xml".equals(zi.getName())) {
                params = FormUtils.parseReportParameters(zis);
                break;
            }
        }

        if (params == null) {
            params = new ArrayList<FormElement>();
            log.warn("Report '{}' has no params.xml file", rpId);
        }

        // Activity log
        // UserActivity.log(session.getUserID(), "GET_REPORT_PARAMETERS", rpId+"", null);
    } catch (IOException e) {
        throw e;
    } finally {
        IOUtils.closeQuietly(zis);
        IOUtils.closeQuietly(bais);
    }

    log.trace("getReportParameters.Time: {}", System.currentTimeMillis() - begin);
    log.debug("getReportParameters: {}", params);
    return params;
}

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From source file:com.glaf.core.util.ZipUtils.java

public static byte[] getBytes(ZipInputStream zipInputStream, String name) {
    byte[] bytes = null;
    try {// w w  w.j  a va2  s  . com
        ZipEntry zipEntry = zipInputStream.getNextEntry();
        while (zipEntry != null) {
            String entryName = zipEntry.getName();
            if (entryName.equalsIgnoreCase(name)) {
                bytes = FileUtils.getBytes(zipInputStream);
                if (bytes != null) {
                    break;
                }
            }
            zipEntry = zipInputStream.getNextEntry();
        }
        return bytes;
    } catch (Exception ex) {
        throw new RuntimeException(ex);
    }
}

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From source file:anotadorderelacoes.model.UtilidadesPacotes.java

/**
 * Verifica se um dado arquivo  um classificador e, se sim, qual . Faz
 * isso descompactando o arquivo e procurando pelo arquivo "meta.ars".
 * /*from w w w .  j a  va 2s .  c  o m*/
 * @param arquivo
 * 
 * @return "invalido" se no  um classificador, "svm" ou "j48" caso
 *         contrrio.
 */
public static String verificarClassificador(File arquivo) {

    String classificador = "invalido";

    try {

        ZipInputStream zis = new ZipInputStream(new FileInputStream(arquivo));
        ZipEntry ze;
        byte[] buffer = new byte[4096];

        while ((ze = zis.getNextEntry()) != null) {

            FileOutputStream fos = new FileOutputStream(ze.getName());
            int numBytes;
            while ((numBytes = zis.read(buffer, 0, buffer.length)) != -1)
                fos.write(buffer, 0, numBytes);
            fos.close();
            zis.closeEntry();

            if (ze.getName().equals("meta.ars")) {
                BufferedReader br = new BufferedReader(new FileReader("meta.ars"));
                String linha;
                while ((linha = br.readLine()) != null) {
                    String[] valores = linha.split(":");
                    if (valores[0].equals("classificador"))
                        classificador = valores[1];
                }
                br.close();
            }

            new File(ze.getName()).delete();

        }

    } catch (FileNotFoundException ex) {
        Logger.getLogger("ARS logger").log(Level.SEVERE, null, ex);
    } catch (IOException ex) {
        Logger.getLogger("ARS logger").log(Level.SEVERE, null, ex);
    } catch (NullPointerException ex) {
        //Logger.getLogger( "ARS logger" ).log( Level.SEVERE, null, ex );
        return classificador;
    }

    return classificador;

}

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From source file:com.matze5800.paupdater.Functions.java

public static void addFilesToExistingZip(File zipFile, File[] files) throws IOException {
    File tempFile = new File(Environment.getExternalStorageDirectory() + "/pa_updater", "temp_kernel.zip");
    tempFile.delete();//from  w w w .j  a  va2  s . co  m

    boolean renameOk = zipFile.renameTo(tempFile);
    if (!renameOk) {
        throw new RuntimeException(
                "could not rename the file " + zipFile.getAbsolutePath() + " to " + tempFile.getAbsolutePath());
    }
    byte[] buf = new byte[1024];

    ZipInputStream zin = new ZipInputStream(new FileInputStream(tempFile));
    ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));

    ZipEntry entry = zin.getNextEntry();
    while (entry != null) {
        String name = entry.getName();
        boolean notInFiles = true;
        for (File f : files) {
            if (f.getName().equals(name)) {
                notInFiles = false;
                break;
            }
        }
        if (notInFiles) {

            out.putNextEntry(new ZipEntry(name));

            int len;
            while ((len = zin.read(buf)) > 0) {
                out.write(buf, 0, len);
            }
        }
        entry = zin.getNextEntry();
    }
    zin.close();

    for (int i = 0; i < files.length; i++) {
        InputStream in = new FileInputStream(files[i]);
        out.putNextEntry(new ZipEntry(files[i].getName()));

        int len;
        while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
        out.closeEntry();
        in.close();
    }
    out.close();
    tempFile.delete();
}

---

From source file:net.firejack.platform.core.utils.ArchiveUtils.java

/**
 * @param zipFile//from   www  . j a v a  2  s .  co m
 * @param files
 * @throws java.io.IOException
 */
public static void addFilesToZip(File zipFile, Map<String, File> files) throws IOException {
    // get a temp file
    File tempFile = File.createTempFile(zipFile.getName(), null);
    // delete it, otherwise you cannot rename your existing zip to it.
    FileUtils.deleteQuietly(tempFile);

    boolean renameOk = zipFile.renameTo(tempFile);
    if (!renameOk) {
        throw new RuntimeException(
                "could not rename the file " + zipFile.getAbsolutePath() + " to " + tempFile.getAbsolutePath());
    }

    ZipInputStream zin = new ZipInputStream(new FileInputStream(tempFile));
    ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));

    ZipEntry entry = zin.getNextEntry();
    while (entry != null) {
        String name = entry.getName();
        boolean notInFiles = true;
        for (Map.Entry<String, File> e : files.entrySet()) {
            if (e.getKey().equals(name)) {
                notInFiles = false;
                break;
            }
        }
        if (notInFiles) {
            out.putNextEntry(new ZipEntry(name));
            IOUtils.copy(zin, out);
        }
        entry = zin.getNextEntry();
    }
    // Close the streams
    zin.close();
    // Compress the files
    for (Map.Entry<String, File> e : files.entrySet()) {
        InputStream in = new FileInputStream(e.getValue());
        // Add ZIP entry to output stream.
        out.putNextEntry(new ZipEntry(e.getKey()));
        // Transfer bytes from the file to the ZIP file

        IOUtils.copy(in, out);
        // Complete the entry
        out.closeEntry();
        IOUtils.closeQuietly(in);
    }
    // Complete the ZIP file
    IOUtils.closeQuietly(out);
    FileUtils.deleteQuietly(tempFile);
}

---

From source file:net.firejack.platform.core.utils.ArchiveUtils.java

/**
 * @param zipFile//  ww  w .j  a  va 2s .  c  om
 * @param files
 * @throws java.io.IOException
 */
public static void addStreamsToZip(File zipFile, Map<String, InputStream> files) throws IOException {
    // get a temp file
    File tempFile = File.createTempFile(zipFile.getName(), null);
    // delete it, otherwise you cannot rename your existing zip to it.
    FileUtils.deleteQuietly(tempFile);

    boolean renameOk = zipFile.renameTo(tempFile);
    if (!renameOk) {
        throw new RuntimeException(
                "could not rename the file " + zipFile.getAbsolutePath() + " to " + tempFile.getAbsolutePath());
    }

    ZipInputStream zin = new ZipInputStream(new FileInputStream(tempFile));
    ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));

    ZipEntry entry = zin.getNextEntry();
    while (entry != null) {
        String name = entry.getName();
        boolean notInFiles = true;
        for (Map.Entry<String, InputStream> e : files.entrySet()) {
            if (e.getKey().equals(name)) {
                notInFiles = false;
                break;
            }
        }
        if (notInFiles) {
            out.putNextEntry(new ZipEntry(name));
            IOUtils.copy(zin, out);
        }
        entry = zin.getNextEntry();
    }
    // Close the streams
    zin.close();
    // Compress the files
    for (Map.Entry<String, InputStream> e : files.entrySet()) {
        InputStream in = e.getValue();
        // Add ZIP entry to output stream.
        out.putNextEntry(new ZipEntry(e.getKey()));
        // Transfer bytes from the file to the ZIP file

        IOUtils.copy(in, out);
        // Complete the entry
        out.closeEntry();
        IOUtils.closeQuietly(in);
    }
    // Complete the ZIP file
    IOUtils.closeQuietly(out);
    FileUtils.deleteQuietly(tempFile);
}

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