Example usage for java.io BufferedInputStream read

Introduction

In this page you can find the example usage for java.io BufferedInputStream read.

Prototype

public synchronized int read(byte b[], int off, int len) throws IOException 

Source Link

Document

Reads bytes from this byte-input stream into the specified byte array, starting at the given offset.

Usage

From source file:autohit.common.Utils.java

/**
 *  Copy files.  I can't believe I have to write this.  It will always
 *  overwrite an existing file.//from  ww  w  . java 2 s.  c  o m
 * @param source source file path
 * @param dest destination file path
 * @return string containing errors or messages
 */
public static String copy(String source, String dest) {

    String overwrite = " ";

    BufferedOutputStream bos = null;
    try {

        File destf = new File(dest);
        if (destf.exists()) {
            destf.delete();
            overwrite = " [overwrite] ";
        }

        byte[] buf = new byte[1024];
        int sbuf;

        BufferedInputStream bis = new BufferedInputStream(new FileInputStream(source));
        bos = new BufferedOutputStream(new FileOutputStream(dest));

        sbuf = bis.read(buf, 0, 1024);
        while (sbuf > 0) {
            bos.write(buf, 0, sbuf);
            sbuf = bis.read(buf, 0, 1024);
        }
    } catch (Exception e) {
    }
    try {
        bos.close();
    } catch (Exception e) {
        return "Copy failed for=" + source + Constants.CRUDE_SEPERATOR;
    }
    return "Copied file=" + source + overwrite + Constants.CRUDE_SEPERATOR;
}

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From source file:de.lazyzero.kkMulticopterFlashTool.utils.Zip.java

public static void unzip2folder(File zipFile, File toFolder) throws FileExistsException {
    if (!toFolder.exists()) {
        toFolder.mkdirs();/* www .  j  a v a2 s . c o  m*/
    } else if (toFolder.isFile()) {
        throw new FileExistsException(toFolder.getName());
    }

    try {
        ZipEntry entry;
        @SuppressWarnings("resource")
        ZipFile zipfile = new ZipFile(zipFile);
        Enumeration<? extends ZipEntry> e = zipfile.entries();
        while (e.hasMoreElements()) {
            entry = e.nextElement();

            //            String newDir;
            //            if (entry.getName().indexOf("/") == -1) {
            //               newDir = zipFile.getName().substring(0, zipFile.getName().indexOf("."));
            //            } else {
            //               newDir = entry.getName().substring(0, entry.getName().indexOf("/"));
            //            }
            //            String folder = toFolder + (File.separatorChar+"") + newDir;
            //            System.out.println(folder);
            //            if ((new File(folder).mkdir())) {
            //               System.out.println("Done.");
            //            }
            System.out.println("Extracting: " + entry);
            if (entry.isDirectory()) {
                new File(toFolder + (File.separatorChar + "") + entry.getName()).mkdir();
            } else {
                BufferedInputStream is = new BufferedInputStream(zipfile.getInputStream(entry));
                int count;
                byte data[] = new byte[2048];
                String fileName = toFolder + (File.separatorChar + "") + entry.getName();
                FileOutputStream fos = new FileOutputStream(fileName);
                BufferedOutputStream dest = new BufferedOutputStream(fos, 2048);
                while ((count = is.read(data, 0, 2048)) != -1) {
                    dest.write(data, 0, count);
                }
                dest.flush();
                dest.close();
                is.close();
                System.out.println("extracted to: " + fileName);
            }

        }
    } catch (ZipException e1) {
        zipFile.delete();
        e1.printStackTrace();
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    } finally {

    }

}

---

From source file:Main.java

public static void unzip(String strZipFile) {

    try {//from w w  w.  j  a va  2 s . c o  m
        /*
         * STEP 1 : Create directory with the name of the zip file
         * 
         * For e.g. if we are going to extract c:/demo.zip create c:/demo directory where we can extract all the zip entries
         */
        File fSourceZip = new File(strZipFile);
        String zipPath = strZipFile.substring(0, strZipFile.length() - 4);
        File temp = new File(zipPath);
        temp.mkdir();
        System.out.println(zipPath + " created");

        /*
         * STEP 2 : Extract entries while creating required sub-directories
         */
        ZipFile zipFile = new ZipFile(fSourceZip);
        Enumeration<? extends ZipEntry> e = zipFile.entries();

        while (e.hasMoreElements()) {
            ZipEntry entry = (ZipEntry) e.nextElement();
            File destinationFilePath = new File(zipPath, entry.getName());

            // create directories if required.
            destinationFilePath.getParentFile().mkdirs();

            // if the entry is directory, leave it. Otherwise extract it.
            if (entry.isDirectory()) {
                continue;
            } else {
                // System.out.println("Extracting " + destinationFilePath);

                /*
                 * Get the InputStream for current entry of the zip file using
                 * 
                 * InputStream getInputStream(Entry entry) method.
                 */
                BufferedInputStream bis = new BufferedInputStream(zipFile.getInputStream(entry));

                int b;
                byte buffer[] = new byte[1024];

                /*
                 * read the current entry from the zip file, extract it and write the extracted file.
                 */
                FileOutputStream fos = new FileOutputStream(destinationFilePath);
                BufferedOutputStream bos = new BufferedOutputStream(fos, 1024);

                while ((b = bis.read(buffer, 0, 1024)) != -1) {
                    bos.write(buffer, 0, b);
                }

                // flush the output stream and close it.
                bos.flush();
                bos.close();

                // close the input stream.
                bis.close();
            }

        }
        zipFile.close();
    } catch (IOException ioe) {
        System.out.println("IOError :" + ioe);
    }

}

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From source file:org.dasein.cloud.aws.storage.GlacierMethod.java

private static byte[] computePayloadSHA256Hash(byte[] payload) throws NoSuchAlgorithmException, IOException {
    BufferedInputStream inputStream = new BufferedInputStream(new ByteArrayInputStream(payload));
    MessageDigest messageDigest = MessageDigest.getInstance("SHA-256");
    byte[] buffer = new byte[4096];
    int bytesRead;
    while ((bytesRead = inputStream.read(buffer, 0, buffer.length)) != -1) {
        messageDigest.update(buffer, 0, bytesRead);
    }// www.j a v  a 2  s  . com
    return messageDigest.digest();
}

---

From source file:com.linkedin.pinot.core.startree.StarTreeSerDe.java

/**
 * Utility method to StarTree version./*w  w  w  .  ja  va  2s.  c  om*/
 * Presence of {@ref #MAGIC_MARKER} indicates on-heap format, while its
 * absence indicates on-heap format.
 *
 * @param bufferedInputStream
 * @return
 * @throws IOException
 */
public static StarTreeFormatVersion getStarTreeVersion(BufferedInputStream bufferedInputStream)
        throws IOException {
    byte[] magicBytes = new byte[MAGIC_MARKER_SIZE_IN_BYTES];

    bufferedInputStream.mark(MAGIC_MARKER_SIZE_IN_BYTES);
    bufferedInputStream.read(magicBytes, 0, MAGIC_MARKER_SIZE_IN_BYTES);
    bufferedInputStream.reset();

    LBufferAPI lBuffer = new LBuffer(MAGIC_MARKER_SIZE_IN_BYTES);
    lBuffer.readFrom(magicBytes, 0);
    long magicMarker = lBuffer.getLong(0);

    if (magicMarker == MAGIC_MARKER) {
        return StarTreeFormatVersion.OFF_HEAP;
    } else {
        return StarTreeFormatVersion.ON_HEAP;
    }
}

---

From source file:com.nwn.NwnFileHandler.java

/**
 * Downloads file from given url//from w w  w  .j a v a 2  s .  com
 * @param fileUrl String of url to download
 * @param dest Location on system where file should be downloaded
 * @return True if download success, False if download failed
 */
public static boolean downloadFile(String fileUrl, String dest) {
    try {
        URL url = new URL(fileUrl);
        BufferedInputStream bis = new BufferedInputStream(url.openStream());
        FileOutputStream fis = new FileOutputStream(dest);
        String fileSizeString = url.openConnection().getHeaderField("Content-Length");
        double fileSize = Double.parseDouble(fileSizeString);
        byte[] buffer = new byte[1024];
        int count;
        double bytesDownloaded = 0.0;
        while ((count = bis.read(buffer, 0, 1024)) != -1) {
            bytesDownloaded += count;
            fis.write(buffer, 0, count);

            int downloadStatus = (int) ((bytesDownloaded / fileSize) * 100);

            System.out.println("Downloading " + fileUrl + " to " + dest + " " + downloadStatus + "%");
        }
        fis.close();
        bis.close();
    } catch (MalformedURLException ex) {
        ex.printStackTrace();
        return false;
    } catch (FileNotFoundException ex) {
        ex.printStackTrace();
        return false;
    } catch (IOException ex) {
        ex.printStackTrace();
        return false;
    }

    return true;
}

---

From source file:Main.java

public static void unzip(URL _url, URL _dest, boolean _remove_top) {
    int BUFFER_SZ = 2048;
    File file = new File(_url.getPath());

    String dest = _dest.getPath();
    new File(dest).mkdir();

    try {/* w w  w  .j a v  a2s  . c  om*/
        ZipFile zip = new ZipFile(file);
        Enumeration<? extends ZipEntry> zipFileEntries = zip.entries();

        // Process each entry
        while (zipFileEntries.hasMoreElements()) {
            // grab a zip file entry
            ZipEntry entry = (ZipEntry) zipFileEntries.nextElement();
            String currentEntry = entry.getName();

            if (_remove_top)
                currentEntry = currentEntry.substring(currentEntry.indexOf('/'), currentEntry.length());

            File destFile = new File(dest, currentEntry);
            //destFile = new File(newPath, destFile.getName());
            File destinationParent = destFile.getParentFile();

            // create the parent directory structure if needed
            destinationParent.mkdirs();

            if (!entry.isDirectory()) {
                BufferedInputStream is;
                is = new BufferedInputStream(zip.getInputStream(entry));
                int currentByte;
                // establish buffer for writing file
                byte data[] = new byte[BUFFER_SZ];

                // write the current file to disk
                FileOutputStream fos = new FileOutputStream(destFile);
                BufferedOutputStream dst = new BufferedOutputStream(fos, BUFFER_SZ);

                // read and write until last byte is encountered
                while ((currentByte = is.read(data, 0, BUFFER_SZ)) != -1) {
                    dst.write(data, 0, currentByte);
                }
                dst.flush();
                dst.close();
                is.close();
            }
            /*
            if (currentEntry.endsWith(".zip"))
            {
            // found a zip file, try to open
            extractFolder(destFile.getAbsolutePath());
            }*/
        }
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

---

From source file:Main.java

private static void zipFile(ZipOutputStream zipOutputStream, String sourcePath) throws IOException {

    java.io.File files = new java.io.File(sourcePath);
    java.io.File[] fileList = files.listFiles();

    String entryPath = "";
    BufferedInputStream input = null;
    for (java.io.File file : fileList) {
        if (file.isDirectory()) {
            zipFile(zipOutputStream, file.getPath());
        } else {//  w w w .j av a  2  s  . c o  m
            byte data[] = new byte[BUFFER_SIZE];
            FileInputStream fileInputStream = new FileInputStream(file.getPath());
            input = new BufferedInputStream(fileInputStream, BUFFER_SIZE);
            entryPath = file.getAbsolutePath().replace(parentPath, "");

            ZipEntry entry = new ZipEntry(entryPath);
            zipOutputStream.putNextEntry(entry);

            int count;
            while ((count = input.read(data, 0, BUFFER_SIZE)) != -1) {
                zipOutputStream.write(data, 0, count);
            }
            input.close();
        }
    }

}

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From source file:com.pieframework.runtime.utils.Zipper.java

public static void unzip(String zipFile, String toDir) throws ZipException, IOException {

    int BUFFER = 2048;
    File file = new File(zipFile);

    ZipFile zip = new ZipFile(file);
    String newPath = toDir;// www  .j a  va  2 s.c o  m

    File toDirectory = new File(newPath);
    if (!toDirectory.exists()) {
        toDirectory.mkdir();
    }
    Enumeration zipFileEntries = zip.entries();

    // Process each entry
    while (zipFileEntries.hasMoreElements()) {
        // grab a zip file entry
        ZipEntry entry = (ZipEntry) zipFileEntries.nextElement();

        String currentEntry = entry.getName();
        File destFile = new File(newPath, FilenameUtils.separatorsToSystem(currentEntry));
        //System.out.println(currentEntry);
        File destinationParent = destFile.getParentFile();

        // create the parent directory structure if needed
        destinationParent.mkdirs();
        if (!entry.isDirectory()) {
            BufferedInputStream is = new BufferedInputStream(zip.getInputStream(entry));
            int currentByte;
            // establish buffer for writing file
            byte data[] = new byte[BUFFER];

            // write the current file to disk
            FileOutputStream fos = new FileOutputStream(destFile);
            BufferedOutputStream dest = new BufferedOutputStream(fos, BUFFER);

            // read and write until last byte is encountered
            while ((currentByte = is.read(data, 0, BUFFER)) != -1) {
                dest.write(data, 0, currentByte);
            }
            dest.flush();
            dest.close();
            is.close();
        }
    }
    zip.close();

}

---

From source file:com.byraphaelmedeiros.autosubdown.AutoSubDown.java

private static void downloadTo(Rule rule, String link) {
    LOGGER.log(Level.INFO, "Downloading " + link + "...");

    try {// ww  w. java2 s  .  c o  m
        String extension = FilenameUtils.getExtension(link);
        BufferedInputStream bis = new BufferedInputStream(new URL(link).openStream());
        FileOutputStream fos = new FileOutputStream(
                rule.getDownloadTo() + File.separator + rule.getFileName() + "." + extension);
        BufferedOutputStream bos = new BufferedOutputStream(fos, 1024);

        byte data[] = new byte[1024];
        int x = 0;

        while ((x = bis.read(data, 0, 1024)) >= 0) {
            bos.write(data, 0, x);
        }

        bos.close();
        bis.close();
    } catch (MalformedURLException e) {
        //e.printStackTrace();
        LOGGER.log(Level.WARNING, "Invalid URL! (" + link + ")");
    } catch (IOException e) {
        //e.printStackTrace();
        LOGGER.log(Level.WARNING, "Unable to access the URL (" + link + ").");
    }
}

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