Class StreamUtil

java.lang.Object

com.itextpdf.io.util.StreamUtil

public final class StreamUtil
extends Object

This file is a helper class for internal usage only. Be aware that its API and functionality may be changed in future.

Field Summary

Fields

Modifier and Type	Field	Description
private static final byte[]	escB
private static final byte[]	escF
private static final byte[]	escN
private static final byte[]	escR
private static final byte[]	escT
private static final int	TRANSFER_SIZE

Constructor Summary

Constructors

Modifier	Constructor	Description
private	StreamUtil()

Method Summary

Modifier and Type	Method	Description
static void	copyBytes(IRandomAccessSource source, long start, long length, OutputStream output)	Copy bytes from the RandomAccessSource to OutputStream.
static ByteBuffer	createBufferedEscapedString(byte[] bytes)
static ByteBuffer	createBufferedHexedString(byte[] bytes)
static byte[]	createEscapedString(byte[] bytes)	Escapes a byte array according to the PDF conventions.
static byte[]	inputStreamToArray(InputStream stream)	Reads the full content of a stream and returns them in a byte array
static void	readFully(InputStream input, byte[] b, int off, int len)	Reads len bytes from an input stream.
static void	skip(InputStream stream, long size)	This method is an alternative for the InputStream.skip() -method that doesn't seem to work properly for big values of size .
static void	transferBytes(RandomAccessFileOrArray input, OutputStream output)
static void	transferBytes(InputStream input, OutputStream output)
static void	writeEscapedString(OutputStream outputStream, byte[] bytes)	Escapes a byte array according to the PDF conventions.
static void	writeHexedString(OutputStream outputStream, byte[] bytes)

Methods inherited from class Object

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

Field Details

TRANSFER_SIZE

private static final int TRANSFER_SIZE

See Also:

• Constant Field Values

escR

private static final byte[] escR

escN

private static final byte[] escN

escT

private static final byte[] escT

escB

private static final byte[] escB

escF

private static final byte[] escF

Constructor Details

StreamUtil

private StreamUtil()

Method Details

skip

public static void skip(InputStream stream,
 long size)
                 throws IOException

This method is an alternative for the InputStream.skip() -method that doesn't seem to work properly for big values of size .

Parameters:

stream - the InputStream

size - the number of bytes to skip

Throws:

IOException - if an I/O error occurs.

createEscapedString

public static byte[] createEscapedString(byte[] bytes)

Escapes a byte array according to the PDF conventions.

Parameters:

bytes - the byte array to escape

Returns:

an escaped byte array

writeEscapedString

public static void writeEscapedString(OutputStream outputStream,
 byte[] bytes)

Escapes a byte array according to the PDF conventions.

Parameters:

outputStream - the OutputStream an escaped byte array write to.

bytes - the byte array to escape.

writeHexedString

public static void writeHexedString(OutputStream outputStream,
 byte[] bytes)

createBufferedEscapedString

public static ByteBuffer createBufferedEscapedString(byte[] bytes)

createBufferedHexedString

public static ByteBuffer createBufferedHexedString(byte[] bytes)

transferBytes

public static void transferBytes(InputStream input,
 OutputStream output)
                          throws IOException

Throws:

IOException

transferBytes

public static void transferBytes(RandomAccessFileOrArray input,
 OutputStream output)
                          throws IOException

Throws:

IOException

inputStreamToArray

public static byte[] inputStreamToArray(InputStream stream)
                                 throws IOException

Reads the full content of a stream and returns them in a byte array

Parameters:

stream - the stream to read

Returns:

a byte array containing all of the bytes from the stream

Throws:

IOException - if there is a problem reading from the input stream

copyBytes

public static void copyBytes(IRandomAccessSource source,
 long start,
 long length,
 OutputStream output)
                      throws IOException

Copy bytes from the RandomAccessSource to OutputStream.

Parameters:

source - the RandomAccessSource copy from.

start - start position of source copy from.

length - length copy to.

output - the OutputStream copy to.

Throws:

IOException - on error.

readFully

public static void readFully(InputStream input,
 byte[] b,
 int off,
 int len)
                      throws IOException

Reads len bytes from an input stream.

Parameters:

input - the stream to read

b - the buffer into which the data is read.

off - an int specifying the offset into the data.

len - an int specifying the number of bytes to read.

Throws:

IOException - if an I/O error occurs.