Package org.cryptacular.util

Class StreamUtil

java.lang.Object

org.cryptacular.util.StreamUtil

public final class StreamUtil
extends Object

Utility methods for stream handling.

Author:

Middleware Services

Field Summary

Fields

Modifier and Type	Field	Description
static final int	CHUNK_SIZE	Buffer size of chunked operations, e.g.

Method Summary

Modifier and Type	Method	Description
static void	closeReader(Reader reader)	Closes the given reader and swallows exceptions that may arise during the process.
static void	closeStream(InputStream in)	Closes the given stream and swallows exceptions that may arise during the process.
static void	closeStream(OutputStream out)	Closes the given stream and swallows exceptions that may arise during the process.
static void	closeWriter(Writer writer)	Closes the given writer and swallows exceptions that may arise during the process.
static Reader	makeReader(File file)	Creates a reader around the given file that presumably contains character data.
static InputStream	makeStream(File file)	Creates an input stream around the given file.
static void	pipeAll(InputStream in, OutputStream out, ChunkHandler handler)	Pipes an input stream into an output stream with chunked processing.
static byte[]	readAll(File file)	Reads all the data from the given file.
static byte[]	readAll(InputStream input)	Reads all the data from the given input stream.
static byte[]	readAll(InputStream input, int sizeHint)	Reads all the data from the given input stream.
static String	readAll(Reader reader)	Reads all data from the given reader.
static String	readAll(Reader reader, int sizeHint)	Reads all data from the given reader.
static byte[]	readAll(String path)	Reads all the data from the file at the given path.

Methods inherited from class java.lang.Object

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

Field Details

CHUNK_SIZE

public static final int CHUNK_SIZE

Buffer size of chunked operations, e.g. pipeAll(java.io.InputStream, java.io.OutputStream, org.cryptacular.io.ChunkHandler).

See Also:

• Constant Field Values

Method Details

readAll

public static byte[] readAll(String path)
                      throws StreamException

Reads all the data from the file at the given path.

Parameters:

path - Path to file.

Returns:

Byte array of data read from file.

Throws:

StreamException - on stream IO errors.

readAll

public static byte[] readAll(File file)
                      throws StreamException

Reads all the data from the given file.

Parameters:

file - File to read.

Returns:

Byte array of data read from file.

Throws:

StreamException - on stream IO errors.

readAll

public static byte[] readAll(InputStream input)
                      throws StreamException

Reads all the data from the given input stream.

Parameters:

input - Input stream to read.

Returns:

Byte array of data read from stream.

Throws:

StreamException - on stream IO errors.

readAll

public static byte[] readAll(InputStream input,
 int sizeHint)
                      throws StreamException

Reads all the data from the given input stream.

Parameters:

input - Input stream to read.

sizeHint - Estimate of amount of data to be read in bytes.

Returns:

Byte array of data read from stream.

Throws:

StreamException - on stream IO errors.

readAll

public static String readAll(Reader reader)
                      throws StreamException

Reads all data from the given reader.

Parameters:

reader - Reader over character data.

Returns:

Data read from reader.

Throws:

StreamException - on stream IO errors.

readAll

public static String readAll(Reader reader,
 int sizeHint)
                      throws StreamException

Reads all data from the given reader.

Parameters:

reader - Reader over character data.

sizeHint - Estimate of amount of data to be read in number of characters.

Returns:

Data read from reader.

Throws:

StreamException - on stream IO errors.

pipeAll

public static void pipeAll(InputStream in,
 OutputStream out,
 ChunkHandler handler)
                    throws StreamException

Pipes an input stream into an output stream with chunked processing.

Parameters:

in - Input stream providing data to process.

out - Output stream holding processed data.

handler - Arbitrary handler for processing input stream.

Throws:

StreamException - on stream IO errors.

makeStream

public static InputStream makeStream(File file)
                              throws StreamException

Creates an input stream around the given file.

Parameters:

file - Input stream source.

Returns:

Input stream around file.

Throws:

StreamException - on stream IO errors.

makeReader

public static Reader makeReader(File file)
                         throws StreamException

Creates a reader around the given file that presumably contains character data.

Parameters:

file - Reader source.

Returns:

Reader around file.

Throws:

StreamException - on stream IO errors.

closeStream

public static void closeStream(InputStream in)

Closes the given stream and swallows exceptions that may arise during the process.

Parameters:

in - Input stream to close.

closeStream

public static void closeStream(OutputStream out)

Closes the given stream and swallows exceptions that may arise during the process.

Parameters:

out - Output stream to close.

closeReader

public static void closeReader(Reader reader)

Closes the given reader and swallows exceptions that may arise during the process.

Parameters:

reader - Reader to close.

closeWriter

public static void closeWriter(Writer writer)

Closes the given writer and swallows exceptions that may arise during the process.

Parameters:

writer - Writer to close.