Package org.apache.fontbox.ttf

Class RAFDataStream

java.lang.Object

org.apache.fontbox.ttf.TTFDataStream

org.apache.fontbox.ttf.RAFDataStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

class RAFDataStream
extends TTFDataStream

An implementation of the TTFDataStream that goes against a RAF.

Field Summary

Fields

Modifier and Type	Field	Description
private static int	BUFFERSIZE
private java.io.RandomAccessFile	raf
private java.io.File	ttfFile

Constructor Summary

Constructors

Constructor	Description
RAFDataStream(java.io.File file, java.lang.String mode)	Constructor.
RAFDataStream(java.lang.String name, java.lang.String mode)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	close()	Close the underlying resources.
long	getCurrentPosition()	Get the current position in the stream.
java.io.InputStream	getOriginalData()	This will get the original data file that was used for this stream.
long	getOriginalDataSize()	This will get the original data size that was used for this stream.
int	read()	Read an unsigned byte.
int	read(byte[] b, int off, int len)
long	readLong()	Read a signed 64-bit integer.
short	readSignedShort()	Read a signed short.
int	readUnsignedShort()	Read an unsigned short.
void	seek(long pos)	Seek into the datasource.

Methods inherited from class org.apache.fontbox.ttf.TTFDataStream

read, read32Fixed, readInternationalDate, readSignedByte, readString, readString, readString, readTag, readUnsignedByte, readUnsignedByteArray, readUnsignedInt, readUnsignedShortArray

Methods inherited from class java.lang.Object

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

Field Detail

raf

private java.io.RandomAccessFile raf

ttfFile

private java.io.File ttfFile

BUFFERSIZE

private static final int BUFFERSIZE

See Also:

Constant Field Values

Constructor Detail

RAFDataStream

RAFDataStream(java.lang.String name,
              java.lang.String mode)
       throws java.io.IOException

Constructor.

Parameters:

name - The raf file.

mode - The mode to open the RAF.

Throws:

java.io.IOException - If there is a problem creating the RAF.

See Also:

RandomAccessFile( String, String )

RAFDataStream

RAFDataStream(java.io.File file,
              java.lang.String mode)
       throws java.io.IOException

Constructor.

Parameters:

file - The raf file.

mode - The mode to open the RAF.

Throws:

java.io.IOException - If there is a problem creating the RAF.

See Also:

RandomAccessFile( File, String )

Method Detail

readSignedShort

public short readSignedShort()
                      throws java.io.IOException

Read a signed short.

Specified by:

readSignedShort in class TTFDataStream

Returns:

An signed short.

Throws:

java.io.IOException - If there is an error reading the data.

See Also:

RandomAccessFile.readShort()

getCurrentPosition

public long getCurrentPosition()
                        throws java.io.IOException

Get the current position in the stream.

Specified by:

getCurrentPosition in class TTFDataStream

Returns:

The current position in the stream.

Throws:

java.io.IOException - If an error occurs while reading the stream.

close

public void close()
           throws java.io.IOException

Close the underlying resources.

Throws:

java.io.IOException - If there is an error closing the resources.

read

public int read()
         throws java.io.IOException

Read an unsigned byte.

Specified by:

read in class TTFDataStream

Returns:

An unsigned byte.

Throws:

java.io.IOException - If there is an error reading the data.

See Also:

RandomAccessFile.read()

readUnsignedShort

public int readUnsignedShort()
                      throws java.io.IOException

Read an unsigned short.

Specified by:

readUnsignedShort in class TTFDataStream

Returns:

An unsigned short.

Throws:

java.io.IOException - If there is an error reading the data.

See Also:

RandomAccessFile.readUnsignedShort()

readLong

public long readLong()
              throws java.io.IOException

Read a signed 64-bit integer.

Specified by:

readLong in class TTFDataStream

Returns:

eight bytes interpreted as a long.

Throws:

java.io.IOException - If there is an error reading the data.

See Also:

RandomAccessFile.readLong()

seek

public void seek(long pos)
          throws java.io.IOException

Seek into the datasource.

Specified by:

seek in class TTFDataStream

Parameters:

pos - The position to seek to.

Throws:

java.io.IOException - If there is an error seeking to that position.

read

public int read(byte[] b,
                int off,
                int len)
         throws java.io.IOException

Specified by:

read in class TTFDataStream

Parameters:

b - The buffer to write to.

off - The offset into the buffer.

len - The length into the buffer.

Returns:

The number of bytes read.

Throws:

java.io.IOException - If there is an error reading from the stream.

See Also:

InputStream.read( byte[], int, int )

getOriginalData

public java.io.InputStream getOriginalData()
                                    throws java.io.IOException

This will get the original data file that was used for this stream.

Specified by:

getOriginalData in class TTFDataStream

Returns:

The data that was read from.

Throws:

java.io.IOException - If there is an issue reading the data.

getOriginalDataSize

public long getOriginalDataSize()

This will get the original data size that was used for this stream.

Specified by:

getOriginalDataSize in class TTFDataStream

Returns:

The size of the original data.