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## org.pdfbox.ttf
Class MemoryTTFDataStream

    java.lang.Object
      org.pdfbox.ttf.TTFDataStream
          org.pdfbox.ttf.MemoryTTFDataStream

public class MemoryTTFDataStream
extends TTFDataStream

An interface into a data stream.

Version:
  $Revision: 1.1 $
Author:
  Ben Litchfield (ben@csh.rit.edu)

Constructor Summary
`MemoryTTFDataStream(InputStream is)` Constructor from a stream.

Method Summary
`void` | `close()` Close the underlying resources.
`COSStream` | `getCOSStream()` Get a COSStream from this TTFDataStream This permit to pass the data read from an external source to the COSObjects to keep a certain persistence layer between specialized objects like the TTF package and the pdmodel package.
`long` | `getCurrentPosition()` Get the current position in the 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.pdfbox.ttf.TTFDataStream
`read, read32Fixed, readInternationalDate, readSignedByte, readString, readString, 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(InputStream is)
                        throws IOException

  Constructor from a stream.

Parameters:
  `is` - The stream of read from.
Throws:
  `IOException` - If an error occurs while reading from the stream.

Method Detail

### readLong

    public long readLong()
                  throws IOException

  Read an unsigned byte.

  Specified by:
    `readLong` in class `TTFDataStream`
  Returns:
    An unsigned byte.
  Throws:
    `IOException` - If there is an error reading the data.

### readSignedInt

    public int readSignedInt()
                      throws IOException

  Read a signed integer.

  Returns:
    A signed integer.
  Throws:
    `IOException` - If there is a problem reading the file.

### read

    public int read()
             throws IOException

  Read an unsigned byte.

  Specified by:
    `read` in class `TTFDataStream`
  Returns:
    An unsigned byte.
  Throws:
    `IOException` - If there is an error reading the data.

### readUnsignedShort

    public int readUnsignedShort()
                          throws IOException

  Read an unsigned short.

  Specified by:
    `readUnsignedShort` in class `TTFDataStream`
  Returns:
    An unsigned short.
  Throws:
    `IOException` - If there is an error reading the data.

### readSignedShort

    public short readSignedShort()
                          throws IOException

  Read an signed short.

  Specified by:
    `readSignedShort` in class `TTFDataStream`
  Returns:
    An signed short.
  Throws:
    `IOException` - If there is an error reading the data.

### close

    public void close()
               throws IOException

  Close the underlying resources.

  Specified by:
    `close` in class `TTFDataStream`
  Throws:
    `IOException` - If there is an error closing the resources.

### seek

    public void seek(long pos)
              throws IOException

  Seek into the datasource.

  Specified by:
    `seek` in class `TTFDataStream`
  Parameters:
    `pos` - The position to seek to.
  Throws:
    `IOException` - If there is an error seeking to that position.

### read

    public int read(byte[] b,
                    int off,
                    int len)
             throws 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:
    `IOException` - If there is an error reading from the stream.
  See Also:
    `InputStream.read( byte[], int, int )`

### getCurrentPosition

    public long getCurrentPosition()
                            throws IOException

  Get the current position in the stream.

  Specified by:
    `getCurrentPosition` in class `TTFDataStream`
  Returns:
    The current position in the stream.
  Throws:
    `IOException` - If an error occurs while reading the stream.

### getCOSStream

    public COSStream getCOSStream()

  Get a COSStream from this TTFDataStream This permit to pass the data read from an external source to the COSObjects to keep a certain persistence layer between specialized objects like the TTF package and the pdmodel package. Created by Pascal Allain Vertical7 Inc.

  Specified by:
    `getCOSStream` in class `TTFDataStream`
  Returns:
    COSStream describing this stream

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