Package org.apache.fontbox.ttf

Class MemoryTTFDataStream

java.lang.Object

org.apache.fontbox.ttf.TTFDataStream

org.apache.fontbox.ttf.MemoryTTFDataStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class MemoryTTFDataStream
extends TTFDataStream

An interface into a data stream.

Author:

Ben Litchfield

Constructor Summary

Constructors

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

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.
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, readUnsignedByte, 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 to read from. It will be closed by this method.

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 interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

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.