Example usage for java.io FileInputStream read

Introduction

In this page you can find the example usage for java.io FileInputStream 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:com.android.dumprendertree2.FsUtils.java

public static byte[] readDataFromStorage(File file) {
    if (!file.exists()) {
        Log.d(LOG_TAG, "readDataFromStorage(): File does not exist: " + file.getAbsolutePath());
        return null;
    }/*from  ww w.  ja va2 s.com*/

    byte[] bytes = null;
    try {
        FileInputStream fis = null;
        try {
            fis = new FileInputStream(file);
            bytes = new byte[(int) file.length()];
            fis.read(bytes);
        } finally {
            if (fis != null) {
                fis.close();
            }
        }
    } catch (IOException e) {
        Log.e(LOG_TAG, "file.getAbsolutePath=" + file.getAbsolutePath(), e);
    }

    return bytes;
}

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From source file:de.bps.onyx.util.SummaryCheckSumValidator.java

/**
 * Validates the Onyx test result summary pages checksum.
 * //from   ww w .  j av  a  2  s .  c o  m
 * @param file
 *            The file containing the summary HTML
 * @return SummaryChecksumValidatorResult structure. The contained validated
 *         field contains the validation result.
 * 
 * @see SummaryChecksumValidatorResult
 */
public static SummaryChecksumValidatorResult validate(final File file) {
    FileInputStream fis = null;
    final ByteArrayOutputStream baos = new ByteArrayOutputStream((int) file.length());
    try {
        fis = new FileInputStream(file);
        final byte[] buf = new byte[102400];
        int read = 0;
        while ((read = fis.read(buf)) >= 0) {
            baos.write(buf, 0, read);
        }
    } catch (final IOException e) {
        //         log.error("Error reading file to validate: " + file.getAbsolutePath(), e);
        final SummaryChecksumValidatorResult result = new SummaryChecksumValidatorResult();
        result.result = "onyx.summary.validation.result.error.reading.file";
        result.info = file.getAbsolutePath() + " - " + e.getMessage();
        return result;

    } finally {
        try {
            if (fis != null) {
                fis.close();
                fis = null;
            }
        } catch (final Exception e) {
            // ignore
        }
    }

    try {
        baos.flush();
    } catch (final IOException e) {
        // ignore
    }

    final String html = baos.toString();

    try {
        baos.close();
    } catch (final IOException e) {
        // ignore
    }

    return internalValidate(html);
}

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From source file:com.sinpo.xnfc.nfc.Util.java

public static String readFileSdcardFile(String fileName) throws IOException {
    String res = "";
    try {// w  w w.j  a va2s .  c  o m
        FileInputStream fin = new FileInputStream(fileName);

        int length = fin.available();

        byte[] buffer = new byte[length];
        fin.read(buffer);

        res = EncodingUtils.getString(buffer, "UTF-8");

        fin.close();
    }

    catch (Exception e) {
        e.printStackTrace();
    }
    return res;
}

---

From source file:com.intuit.s3encrypt.S3Encrypt.java

public static KeyPair loadKeyPair(String filename, String algorithm)
        throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
    // Read public key from file.
    FileInputStream keyfis = new FileInputStream(filename + ".pub");
    byte[] encodedPublicKey = new byte[keyfis.available()];
    keyfis.read(encodedPublicKey);
    keyfis.close();//ww  w  . j  av a 2s .c  o  m

    // Read private key from file.
    keyfis = new FileInputStream(filename);
    byte[] encodedPrivateKey = new byte[keyfis.available()];
    keyfis.read(encodedPrivateKey);
    keyfis.close();

    // Generate KeyPair from public and private keys.
    KeyFactory keyFactory = KeyFactory.getInstance(algorithm);
    X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(encodedPublicKey);
    PublicKey publicKey = keyFactory.generatePublic(publicKeySpec);

    PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(encodedPrivateKey);
    PrivateKey privateKey = keyFactory.generatePrivate(privateKeySpec);

    return new KeyPair(publicKey, privateKey);

}

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From source file:com.enderville.enderinstaller.util.InstallScript.java

/**
 * Repackages all the files in the tmp directory to the new minecraft.jar
 *
 * @param tmp The temp directory where mods were installed.
 * @param mcjar The location to save the new minecraft.jar.
 * @throws IOException/*from  w  w w .  j  a v a  2s. c  o m*/
 */
public static void repackMCJar(File tmp, File mcjar) throws IOException {
    byte[] dat = new byte[4 * 1024];

    JarOutputStream jarout = new JarOutputStream(FileUtils.openOutputStream(mcjar));

    Queue<File> queue = new LinkedList<File>();
    for (File f : tmp.listFiles()) {
        queue.add(f);
    }

    while (!queue.isEmpty()) {
        File f = queue.poll();
        if (f.isDirectory()) {
            for (File child : f.listFiles()) {
                queue.add(child);
            }
        } else {
            //TODO need a better way to do this
            String name = f.getPath().substring(tmp.getPath().length() + 1);
            //TODO is this formatting really required for jars?
            name = name.replace("\\", "/");
            if (f.isDirectory() && !name.endsWith("/")) {
                name = name + "/";
            }
            JarEntry entry = new JarEntry(name);
            jarout.putNextEntry(entry);

            FileInputStream in = new FileInputStream(f);
            int len = -1;
            while ((len = in.read(dat)) > 0) {
                jarout.write(dat, 0, len);
            }
            in.close();
        }
        jarout.closeEntry();
    }
    jarout.close();

}

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

public static void zip(String zipFile, Map<String, File> flist) {
    byte[] buf = new byte[1024];
    try {// w  w w  .j  a v  a 2  s .  c  o m
        // Create the ZIP file 
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));

        // Compress the files 
        for (String url : flist.keySet()) {
            FileInputStream in = new FileInputStream(flist.get(url).getPath());
            // Add ZIP entry to output stream. Zip entry should be relative
            out.putNextEntry(new ZipEntry(url));
            // Transfer bytes from the file to the ZIP file 
            int len;
            while ((len = in.read(buf)) > 0) {
                out.write(buf, 0, len);
            }
            // Complete the entry 
            out.closeEntry();
            in.close();
        }

        // Complete the ZIP file 
        out.close();
    } catch (Exception e) {
        throw new RuntimeException("Encountered errors zipping file " + zipFile, e);
    }
}

---

From source file:Main.java

public static void compressFile(String inputFilePath, boolean deleteSource) throws IOException {
    byte[] buffer = new byte[1024];
    FileOutputStream fos = null;/*w  w  w  .j a  va 2s  .c o m*/
    GZIPOutputStream gzos = null;
    FileInputStream fis = null;

    try {
        fos = new FileOutputStream(inputFilePath + ".gz");
        gzos = new GZIPOutputStream(fos);

        fis = new FileInputStream(inputFilePath);
        //         String zipEntryName = inputFilePath.substring(inputFilePath.lastIndexOf(File.separator) + 1);         
        //         gzos.putNextEntry(new ZipEntry(zipEntryName));

        int length;
        while ((length = fis.read(buffer)) > 0) {
            gzos.write(buffer, 0, length);
        }
    } finally {
        gzos.close();
        fos.close();
        fis.close();
    }

    if (deleteSource) {
        new File(inputFilePath).delete();
    }
}

---

From source file:de.flapdoodle.embed.process.io.file.Files.java

private static void copyFile(File source, File destination) throws IOException {
    FileInputStream reader = null;
    FileOutputStream writer = null;
    try {// ww w.  j ava 2s . co  m
        reader = new FileInputStream(source);
        writer = new FileOutputStream(destination);

        int read;
        byte[] buf = new byte[BYTE_BUFFER_LENGTH];
        while ((read = reader.read(buf)) != -1) {
            writer.write(buf, 0, read);
        }

    } finally {
        if (reader != null)
            reader.close();
        if (writer != null)
            writer.close();
    }
}

---

From source file:ch.admin.suis.msghandler.util.ZipUtils.java

/**
 * Creates a new unique ZIP file in the destination directory and adds to it
 * the provided collection of files./*w w  w .ja va2  s .  co m*/
 *
 * @param toDir The name of the file created
 * @param files The files to compress
 * @return A Zipped File
 * @throws IOException if the file cannot be created because of a IO error
 */
public static File compress(File toDir, Collection<File> files) throws IOException {
    final File zipFile = File.createTempFile("data", ".zip", toDir);

    // was there an exception?
    boolean exceptionThrown = false;

    try (ZipOutputStream zout = new ZipOutputStream(
            new BufferedOutputStream(new FileOutputStream(zipFile), BUFFER_SIZE))) {

        byte[] data = new byte[BUFFER_SIZE];

        for (File file : files) {
            // create the entry
            zout.putNextEntry(new ZipEntry(file.getName()));

            FileInputStream in = new FileInputStream(file);

            try (FileLock lock = in.getChannel().tryLock(0, Long.MAX_VALUE, true)) {
                isInValid(lock, in);
                int len;

                // write the file to the entry
                while ((len = in.read(data)) > 0) {
                    zout.write(data, 0, len);
                }
                lock.release();
            } finally {
                try {
                    in.close();
                } catch (IOException e) {
                    LOG.error("cannot properly close the opened file " + file.getAbsolutePath(), e);
                }
            }

        }
    } catch (IOException e) {
        LOG.error("error while creating the ZIP file " + zipFile.getAbsolutePath(), e);
        // mark for the finally block
        exceptionThrown = true;
        // rethrow - the finally block is only for the first exception
        throw e;
    } finally {
        // remove the file in case of an exception
        if (exceptionThrown && !zipFile.delete()) {
            LOG.error("cannot delete the file " + zipFile.getAbsolutePath());
        }
    }

    return zipFile;
}

---

From source file:Main.java

public static String compressGzipFile(String filename) {
    if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)) {

        File flockedFilesFolder = new File(
                Environment.getExternalStorageDirectory() + File.separator + "FlockLoad");
        System.out.println("FlockedFileDir: " + flockedFilesFolder);
        String uncompressedFile = flockedFilesFolder.toString() + "/" + filename;
        String compressedFile = flockedFilesFolder.toString() + "/" + "gzip.zip";

        try {/*from  www  .  j  ava 2  s  .  co m*/
            FileInputStream fis = new FileInputStream(uncompressedFile);
            FileOutputStream fos = new FileOutputStream(compressedFile);
            GZIPOutputStream gzipOS = new GZIPOutputStream(fos) {
                {
                    def.setLevel(Deflater.BEST_COMPRESSION);
                }
            };

            byte[] buffer = new byte[1024];
            int len;
            while ((len = fis.read(buffer)) != -1) {
                gzipOS.write(buffer, 0, len);
            }
            //close resources
            gzipOS.close();
            fos.close();
            fis.close();
            return compressedFile;
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return null;

}

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