org.apache.fontbox.ttf
Class MemoryTTFDataStream

java.lang.Object
  org.apache.fontbox.ttf.TTFDataStream
      org.apache.fontbox.ttf.MemoryTTFDataStream

public class MemoryTTFDataStream
extends TTFDataStream

An interface into a data stream.

Version:

$Revision: 1.2 $

Author:

Ben Litchfield (ben@benlitchfield.com)

Constructor Summary

MemoryTTFDataStream(java.io.InputStream is)
Constructor from a stream.

Method Summary

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.
int	read() Read an unsigned byte.
int	read(byte[] b, int off, int len)
long	readLong() Read an unsigned byte.
int	readSignedInt() Read a signed integer.
short	readSignedShort() Read an 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, readUnsignedByteArray, readUnsignedInt, readUnsignedShortArray

Methods inherited from class java.lang.Object

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

Constructor Detail

MemoryTTFDataStream

public MemoryTTFDataStream(java.io.InputStream is)
                    throws java.io.IOException

Constructor from a stream.

Parameters:

is - The stream of read from.

Throws:

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

Method Detail

readLong

public long readLong()
              throws java.io.IOException

Read an unsigned byte.

Specified by:

readLong in class TTFDataStream

Returns:

An unsigned byte.

Throws:

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

readSignedInt

public int readSignedInt()
                  throws java.io.IOException

Read a signed integer.

Returns:

A signed integer.

Throws:

java.io.IOException - If there is a problem reading the file.

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.

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.

readSignedShort

public short readSignedShort()
                      throws java.io.IOException

Read an signed short.

Specified by:

readSignedShort in class TTFDataStream

Returns:

An signed short.

Throws:

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

close

public void close()
           throws java.io.IOException

Close the underlying resources.

Specified by:

close in class TTFDataStream

Throws:

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

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, or -1 at the end of the stream

Throws:

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

See Also:

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

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.

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.