com.lowagie.text.pdf

Class RandomAccessFileOrArray

public class RandomAccessFileOrArray extends Object implements DataInput

An implementation of a RandomAccessFile for input only that accepts a file or a byte array as data source.

Author: Paulo Soares (psoares@consiste.pt)

Field Summary
byte[]	arrayIn
int	arrayInPtr
byte	back
String	filename
boolean	isBack
boolean	plainRandomAccess
MappedRandomAccessFile	rf
int	startOffset Holds value of property startOffset.
RandomAccessFile	trf

Constructor Summary
	RandomAccessFileOrArray(String filename)
	RandomAccessFileOrArray(String filename, boolean forceRead, boolean plainRandomAccess)
	RandomAccessFileOrArray(URL url)
	RandomAccessFileOrArray(InputStream is)
	RandomAccessFileOrArray(byte[] arrayIn)
	RandomAccessFileOrArray(RandomAccessFileOrArray file)

Method Summary
void	close()
int	getFilePointer()
ByteBuffer	getNioByteBuffer()
int	getStartOffset() Getter for property startOffset.
protected void	insureOpen()
boolean	isOpen()
static byte[]	InputStreamToArray(InputStream is)
int	length()
void	pushBack(byte b)
int	read()
int	read(byte[] b, int off, int len)
int	read(byte[] b)
boolean	readBoolean()
byte	readByte()
char	readChar()
char	readCharLE() Reads a Unicode character from this stream in little-endian order.
double	readDouble()
double	readDoubleLE()
float	readFloat()
float	readFloatLE()
void	readFully(byte[] b)
void	readFully(byte[] b, int off, int len)
int	readInt()
int	readIntLE() Reads a signed 32-bit integer from this stream in little-endian order.
String	readLine()
long	readLong()
long	readLongLE()
short	readShort()
short	readShortLE() Reads a signed 16-bit number from this stream in little-endian order.
int	readUnsignedByte()
long	readUnsignedInt() Reads an unsigned 32-bit integer from this stream.
long	readUnsignedIntLE()
int	readUnsignedShort()
int	readUnsignedShortLE() Reads an unsigned 16-bit number from this stream in little-endian order.
String	readUTF()
void	reOpen()
void	seek(int pos)
void	seek(long pos)
void	setStartOffset(int startOffset) Setter for property startOffset.
long	skip(long n)
int	skipBytes(int n)

Field Detail

startOffset

private int startOffset

Holds value of property startOffset.

Constructor Detail

RandomAccessFileOrArray

public RandomAccessFileOrArray(String filename)

RandomAccessFileOrArray

public RandomAccessFileOrArray(String filename, boolean forceRead, boolean plainRandomAccess)

RandomAccessFileOrArray

public RandomAccessFileOrArray(InputStream is)

RandomAccessFileOrArray

public RandomAccessFileOrArray(byte[] arrayIn)

RandomAccessFileOrArray

public RandomAccessFileOrArray(RandomAccessFileOrArray file)

Method Detail

getNioByteBuffer

public ByteBuffer getNioByteBuffer()

Since: 2.0.8

getStartOffset

public int getStartOffset()

Getter for property startOffset.

Returns: Value of property startOffset.

InputStreamToArray

public static byte[] InputStreamToArray(InputStream is)

read

public int read(byte[] b, int off, int len)

Reads a Unicode character from this stream in little-endian order. This method reads two bytes from the stream, starting at the current stream pointer. If the bytes read, in order, are b1 and b2, where 0 <= b1, b2 <= 255, then the result is equal to:

     (char)((b2 << 8) | b1)

This method blocks until the two bytes are read, the end of the stream is detected, or an exception is thrown.

Returns: the next two bytes of this stream as a Unicode character.

Throws: EOFException if this stream reaches the end before reading two bytes. IOException if an I/O error occurs.

readDouble

public double readDouble()

readDoubleLE

public final double readDoubleLE()

readFloat

public float readFloat()

readFloatLE

public final float readFloatLE()

readFully

public void readFully(byte[] b)

readFully

public void readFully(byte[] b, int off, int len)

readInt

public int readInt()

readIntLE

public final int readIntLE()

Reads a signed 32-bit integer from this stream in little-endian order. This method reads 4 bytes from the stream, starting at the current stream pointer. If the bytes read, in order, are b1, b2, b3, and b4, where 0 <= b1, b2, b3, b4 <= 255, then the result is equal to:

     (b4 << 24) | (b3 << 16) + (b2 << 8) + b1

This method blocks until the four bytes are read, the end of the stream is detected, or an exception is thrown.

Returns: the next four bytes of this stream, interpreted as an int.

Throws: EOFException if this stream reaches the end before reading four bytes. IOException if an I/O error occurs.

readLine

public String readLine()

readLong

public long readLong()

readLongLE

public final long readLongLE()

readShort

public short readShort()

readShortLE

public final short readShortLE()

Reads a signed 16-bit number from this stream in little-endian order. The method reads two bytes from this stream, starting at the current stream pointer. If the two bytes read, in order, are b1 and b2, where each of the two values is between 0 and 255, inclusive, then the result is equal to:

     (short)((b2 << 8) | b1)

This method blocks until the two bytes are read, the end of the stream is detected, or an exception is thrown.

Returns: the next two bytes of this stream, interpreted as a signed 16-bit number.

Throws: EOFException if this stream reaches the end before reading two bytes. IOException if an I/O error occurs.

readUnsignedByte

public int readUnsignedByte()

readUnsignedInt

public final long readUnsignedInt()

Reads an unsigned 32-bit integer from this stream. This method reads 4 bytes from the stream, starting at the current stream pointer. If the bytes read, in order, are b1, b2, b3, and b4, where 0 <= b1, b2, b3, b4 <= 255, then the result is equal to:

     (b1 << 24) | (b2 << 16) + (b3 << 8) + b4

This method blocks until the four bytes are read, the end of the stream is detected, or an exception is thrown.

Returns: the next four bytes of this stream, interpreted as a long.

Throws: EOFException if this stream reaches the end before reading four bytes. IOException if an I/O error occurs.

readUnsignedIntLE

public final long readUnsignedIntLE()

readUnsignedShort

public int readUnsignedShort()

readUnsignedShortLE

public final int readUnsignedShortLE()

Reads an unsigned 16-bit number from this stream in little-endian order. This method reads two bytes from the stream, starting at the current stream pointer. If the bytes read, in order, are b1 and b2, where 0 <= b1, b2 <= 255, then the result is equal to:

     (b2 << 8) | b1

This method blocks until the two bytes are read, the end of the stream is detected, or an exception is thrown.

Returns: the next two bytes of this stream, interpreted as an unsigned 16-bit integer.

Throws: EOFException if this stream reaches the end before reading two bytes. IOException if an I/O error occurs.

Parameters: startOffset New value of property startOffset.

skip

public long skip(long n)

skipBytes

public int skipBytes(int n)