com.saperion.util

Class StreamUtil

java.lang.Object

com.saperion.util.StreamUtil

public final class StreamUtil
extends Object

Utility class for copying streams, file channels and append byte arrays.

Method Summary

Methods

Modifier and Type	Method and Description
static byte[]	append(byte[] array1, byte[] array2) Creates a new array from the content of the two given byte arrays.
static void	closeQuietly(Closeable closeable)
static boolean	compare(InputStream content1, InputStream content2) Compares the given input streams (pair-wise byte comparison).
static void	copyInToOut(InputStream in, OutputStream out, ByteBuffer buffer, boolean forceClose) Copies the content from in to out.
static void	copyInToOut(InputStream in, OutputStream out, int bufferSize, boolean forceClose) Copies the content of the given InputStream to the given OutputStream.
static void	copyInToOut(InputStream in, String inputEncoding, OutputStream out, String outputEncoding, int bufferSize, boolean forceClose) Copies the content from in to out.
static byte[]	readBytes(InputStream in, int bufferSize, boolean forceClose) Creates a byte array of the given InputStream and returns it.
static void	transferFrom(ReadableByteChannel in, FileChannel out, int buffer, boolean forceClose) Transfers (copies) the content from in to out.
static void	transferTo(FileChannel in, WritableByteChannel out, int buffer, boolean forceClose) Transforms (copies) the content of the given FileChannel to the given WritableByteChannel.
static long	transferTo(ReadableByteChannel in, WritableByteChannel out, int size, boolean forceClose)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

copyInToOut

public static void copyInToOut(InputStream in,
               String inputEncoding,
               OutputStream out,
               String outputEncoding,
               int bufferSize,
               boolean forceClose)
                        throws IOException

Copies the content from in to out.

Parameters:

in - The source InputStream.

inputEncoding - The encoding of the input stream.

out - The destination OutputStream.

outputEncoding - The encoding of the output stream.

bufferSize - The buffer size.

forceClose - If true, the given streams will be closed after execution.

Throws:

IOException - Throws an IOException if an IO error occurs.

copyInToOut

public static void copyInToOut(InputStream in,
               OutputStream out,
               ByteBuffer buffer,
               boolean forceClose)
                        throws IOException

Copies the content from in to out.

Parameters:

in - The source InputStream.

out - The destination OutputStream.

buffer - The buffer size.

forceClose - If true, the given channels will be closed after execution.

Throws:

IOException - Throws an IOException if an IO error occurs.

transferFrom

public static void transferFrom(ReadableByteChannel in,
                FileChannel out,
                int buffer,
                boolean forceClose)
                         throws IOException

Transfers (copies) the content from in to out.

Parameters:

in - The source ReadableByteChannel.

out - The destination FileChannel.

buffer - The buffer size.

forceClose - If true, the given channels will be closed after execution.

Throws:

IOException - Throws an IOException if an IO error occurs.

transferTo

public static void transferTo(FileChannel in,
              WritableByteChannel out,
              int buffer,
              boolean forceClose)
                       throws IOException

Transforms (copies) the content of the given FileChannel to the given WritableByteChannel.

Parameters:

in - The FileChannel to read byte from.

out - The WritableByteChannel to transform bytes to.

buffer - The buffer size.

forceClose - If true, the given channels will be closed after execution.

Throws:

IOException - Throws an IOException if an IO error occurs.

transferTo

public static long transferTo(ReadableByteChannel in,
              WritableByteChannel out,
              int size,
              boolean forceClose)
                       throws IOException

Throws:

IOException

copyInToOut

public static void copyInToOut(InputStream in,
               OutputStream out,
               int bufferSize,
               boolean forceClose)
                        throws IOException

Copies the content of the given InputStream to the given OutputStream.

Parameters:

in - The InputStream to read the content from.

out - The OutputStream to copy the content to.

bufferSize - The buffer size.

forceClose - If true, the given streams will be closed after execution.

Throws:

IOException - Throws an IOException if an IO error occurs.

append

public static byte[] append(byte[] array1,
            byte[] array2)

Creates a new array from the content of the two given byte arrays.

Parameters:

array1 - The first content array.

array2 - The second content array.

Returns:

The newly created byte array.

readBytes

public static byte[] readBytes(InputStream in,
               int bufferSize,
               boolean forceClose)
                        throws IOException

Creates a byte array of the given InputStream and returns it.

Parameters:

in - The InputSteam in to copy.

bufferSize - The size of the array to be created.

forceClose - It true, all streams will be closed.

Returns:

the created byte array.

Throws:

IOException - Throws an IOException if an IO error occurs.

closeQuietly

public static void closeQuietly(Closeable closeable)

compare

public static boolean compare(InputStream content1,
              InputStream content2)
                       throws IOException

Compares the given input streams (pair-wise byte comparison).

Parameters:

content1 - The first InputStream in question.

content2 - The second InputStream in question.

Returns:

Returns true, if the given stream are equal.

Throws:

IOException - Throws an IOException if an IO error occurs.