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:de.nrw.hbz.deepzoomer.fileUtil.FileUtil.java

public static String loadFileIntoString(File file) {
    String fString = null;/* ww w  .  java2s.c om*/
    FileInputStream fis = null;

    try {
        fis = new FileInputStream(file);
        int i = (int) file.length();
        byte[] b = new byte[i];
        fis.read(b);

        ByteArrayOutputStream bfos = new ByteArrayOutputStream();
        bfos.write(b);

        fString = bfos.toString("UTF-8");

    } catch (Exception e) {
        // TODO Auto-generated catch block
        log.error(e);
    } finally {
        if (fis != null) {
            try {
                fis.close();
            } catch (IOException ioExc) {
                log.error(ioExc);
            }
        }

    }

    return fString;
}

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From source file:com.rackspacecloud.client.cloudfiles.sample.FilesCopy.java

public static File zipFile(File f) throws IOException {
    byte[] buf = new byte[1024];
    int len;/*from   ww w.ja va 2  s.  c  o  m*/

    // Create the ZIP file
    String filenameWithZipExt = f.getName() + ZIPEXTENSION;
    File zippedFile = new File(FilenameUtils.concat(SYSTEM_TMP.getAbsolutePath(), filenameWithZipExt));

    ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zippedFile));
    FileInputStream in = new FileInputStream(f);

    // Add ZIP entry to output stream.
    out.putNextEntry(new ZipEntry(f.getName()));

    // Transfer bytes from the file to the ZIP file
    while ((len = in.read(buf)) > 0) {
        out.write(buf, 0, len);
    }

    // Complete the entry
    out.closeEntry();
    out.flush();

    in.close();
    out.close();

    return zippedFile;
}

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From source file:com.mvdb.etl.actions.ActionUtils.java

private static void zipDir(String origDir, File dirObj, ZipOutputStream zos) throws IOException {
    File[] files = dirObj.listFiles();
    byte[] tmpBuf = new byte[1024];

    for (int i = 0; i < files.length; i++) {
        if (files[i].isDirectory()) {
            zipDir(origDir, files[i], zos);
            continue;
        }//w  w w . jav a  2  s.c o m
        String wAbsolutePath = files[i].getAbsolutePath().substring(origDir.length() + 1,
                files[i].getAbsolutePath().length());
        FileInputStream in = new FileInputStream(files[i].getAbsolutePath());
        zos.putNextEntry(new ZipEntry(wAbsolutePath));
        int len;
        while ((len = in.read(tmpBuf)) > 0) {
            zos.write(tmpBuf, 0, len);
        }
        zos.closeEntry();
        in.close();
    }
}

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From source file:net.sf.keystore_explorer.crypto.signing.MidletSigner.java

private static byte[] signJarDigest(File jarFile, RSAPrivateKey privateKey) throws CryptoException {
    // Create a SHA-1 signature for the supplied JAR file

    FileInputStream fis = null;

    try {//from   ww  w . j  a  va 2s.c  o m
        Signature signature = Signature.getInstance(SignatureType.SHA1_RSA.jce());

        signature.initSign(privateKey);
        fis = new FileInputStream(jarFile);

        byte buffer[] = new byte[1024];
        int read = 0;

        while ((read = fis.read(buffer)) != -1) {
            signature.update(buffer, 0, read);
        }

        return signature.sign();
    } catch (IOException ex) {
        throw new CryptoException(res.getString("JarDigestSignatureFailed.exception.message"), ex);
    } catch (GeneralSecurityException ex) {
        throw new CryptoException(res.getString("JarDigestSignatureFailed.exception.message"), ex);
    } finally {
        IOUtils.closeQuietly(fis);
    }
}

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From source file:Main.java

/**
 * Copy a file into a dstPath directory.
 * The output filename can be provided.//from  w  ww  .j  a v a2 s.c om
 * The output file is not overriden if it is already exist.
 * @param context the context
 * @param sourceFile the file source path
 * @param dstDirPath the dst path
 * @param outputFilename optional the output filename
 * @return the downloads file path if the file exists or has been properly saved
 */
public static String saveFileInto(Context context, File sourceFile, String dstDirPath, String outputFilename) {
    // sanity check
    if ((null == sourceFile) || (null == dstDirPath)) {
        return null;
    }

    // defines another name for the external media
    String dstFileName;

    // build a filename is not provided
    if (null == outputFilename) {
        // extract the file extension from the uri
        int dotPos = sourceFile.getName().lastIndexOf(".");

        String fileExt = "";
        if (dotPos > 0) {
            fileExt = sourceFile.getName().substring(dotPos);
        }

        dstFileName = "MatrixConsole_" + System.currentTimeMillis() + fileExt;
    } else {
        dstFileName = outputFilename;
    }

    File dstDir = Environment.getExternalStoragePublicDirectory(dstDirPath);
    if (dstDir != null) {
        dstDir.mkdirs();
    }

    File dstFile = new File(dstDir, dstFileName);

    // Copy source file to destination
    FileInputStream inputStream = null;
    FileOutputStream outputStream = null;
    try {
        // create only the
        if (!dstFile.exists()) {
            dstFile.createNewFile();

            inputStream = new FileInputStream(sourceFile);
            outputStream = new FileOutputStream(dstFile);

            byte[] buffer = new byte[1024 * 10];
            int len;
            while ((len = inputStream.read(buffer)) != -1) {
                outputStream.write(buffer, 0, len);
            }
        }
    } catch (Exception e) {
        dstFile = null;
    } finally {
        // Close resources
        try {
            if (inputStream != null)
                inputStream.close();
            if (outputStream != null)
                outputStream.close();
        } catch (Exception e) {
        }
    }

    if (null != dstFile) {
        return dstFile.getAbsolutePath();
    } else {
        return null;
    }
}

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From source file:com.globalsight.everest.webapp.pagehandler.tm.management.FileUploadHelper.java

/**
 * Renames a file from its originalName to a newName. NOTE:
 * java.io.File.renameTo() has some known bugs that apparently are still
 * unfixed in 1.3 so it cannot be used. <br>
 * This implementation simply copies originalName to newName and then
 * deletes the originalName file.//from  w  w w. ja  v  a  2s  .com
 * 
 * @param p_originalName --
 *            source file name
 * @param p_newName --
 *            destination file name
 */
public static void renameFile(File p_originalName, File p_newName) throws IOException {
    FileInputStream fis = new FileInputStream(p_originalName);
    FileOutputStream fos = new FileOutputStream(p_newName);
    byte buffer[] = new byte[2056];
    boolean keepReading = true;
    int numBytesRead = -1;
    while (keepReading) {
        numBytesRead = fis.read(buffer);
        if (numBytesRead == -1)
            keepReading = false;
        else
            fos.write(buffer, 0, numBytesRead);
    }

    fis.close();
    fos.close();
    p_originalName.delete();
}

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From source file:com.easysoft.build.utils.PatchUtil.java

/**
 * ?SQL/*from www  .j  a  va  2s  .  c  o  m*/
 * @param sqlFile
 * @return
 * @throws java.io.IOException
 */
public static StringBuilder readFile(File file, String encoding) throws IOException {
    if (encoding == null)
        encoding = "UTF-8";
    StringBuilder sb = new StringBuilder();
    if (!file.exists() || !file.isFile())
        return sb;
    final int buffer = 1024;
    byte[] bs = new byte[buffer];
    FileInputStream in = new FileInputStream(file);
    int len = in.read(bs);
    int total = 0;
    while (len != -1) {
        total += len;
        byte[] tmp = new byte[total + buffer];
        System.arraycopy(bs, 0, tmp, 0, total);
        bs = tmp;
        len = in.read(bs, total, buffer);
    }
    sb.append(new String(bs, 0, total, encoding));
    in.close();
    return sb;
}

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From source file:models.Attachment.java

/**
 * Moves a file to the Upload Directory.
 *
 * This method is used to move a file stored in temporary directory by
 * PlayFramework to the Upload Directory managed by Yobi.
 *
 * @param file/*from   ww w  .  j  a va  2 s . c  om*/
 * @return SHA1 hash of the file
 * @throws NoSuchAlgorithmException
 * @throws IOException
 */
private static String moveFileIntoUploadDirectory(File file) throws NoSuchAlgorithmException, IOException {
    // Compute sha1 checksum.
    MessageDigest algorithm = MessageDigest.getInstance("SHA1");
    byte buf[] = new byte[10240];
    FileInputStream fis = new FileInputStream(file);
    for (int size = 0; size >= 0; size = fis.read(buf)) {
        algorithm.update(buf, 0, size);
    }
    Formatter formatter = new Formatter();
    for (byte b : algorithm.digest()) {
        formatter.format("%02x", b);
    }
    String hash = formatter.toString();
    formatter.close();
    fis.close();

    // Store the file.
    // Before do that, create upload directory if it doesn't exist.
    File uploads = new File(uploadDirectory);
    uploads.mkdirs();
    if (!uploads.isDirectory()) {
        throw new NotDirectoryException("'" + file.getAbsolutePath() + "' is not a directory.");
    }
    File attachedFile = new File(uploadDirectory, hash);
    boolean isMoved = file.renameTo(attachedFile);

    if (!isMoved) {
        FileUtils.copyFile(file, attachedFile);
        file.delete();
    }

    // Close all resources.

    return hash;
}

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From source file:Main.java

@Nullable
private static File getFromMediaUriPfd(Context context, ContentResolver resolver, Uri uri) {
    if (uri == null)
        return null;

    FileInputStream input = null;
    FileOutputStream output = null;
    try {/*from ww  w  . ja v a2  s  . co  m*/
        ParcelFileDescriptor pfd = resolver.openFileDescriptor(uri, "r");
        FileDescriptor fd = pfd.getFileDescriptor();
        input = new FileInputStream(fd);

        String tempFilename = getTempFilename(context);
        output = new FileOutputStream(tempFilename);

        int read;
        byte[] bytes = new byte[4096];
        while ((read = input.read(bytes)) != -1) {
            output.write(bytes, 0, read);
        }
        return new File(tempFilename);
    } catch (IOException ignored) {
        // Nothing we can do
    } finally {
        closeSilently(input);
        closeSilently(output);
    }
    return null;
}

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From source file:com.almarsoft.GroundhogReader.lib.FSUtils.java

public static String saveAttachment(String md5, String group, String name) throws IOException {

    String outDir = UsenetConstants.EXTERNALSTORAGE + "/downloads";
    File dirOutDir = new File(outDir);
    if (!dirOutDir.exists())
        dirOutDir.mkdirs();/*from w  w  w .j av  a 2s.c o  m*/

    name = sanitizeFileName(name);

    String origFilePath = UsenetConstants.EXTERNALSTORAGE + "/" + UsenetConstants.APPNAME + "/"
            + UsenetConstants.ATTACHMENTSDIR + "/" + group + "/" + md5;
    String destFilePath = outDir + "/" + name;

    FileInputStream in = new FileInputStream(origFilePath);
    FileOutputStream out = new FileOutputStream(destFilePath);

    // Transfer bytes from in to out
    byte[] buf = new byte[1024];
    int len;
    while ((len = in.read(buf)) > 0) {
        out.write(buf, 0, len);
    }
    in.close();
    out.close();

    return destFilePath;
}

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