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## org.apache.fop.fonts.truetype
Class FontFileReader

    java.lang.Object
      org.apache.fop.fonts.truetype.FontFileReader

public class FontFileReader
extends java.lang.Object

Reads a TrueType font file into a byte array and provides file like functions for array access.

Constructor Summary
`FontFileReader(java.io.InputStream in)` Constructor
`FontFileReader(java.lang.String fileName)` Constructor

Method Summary
`byte[]` | `getBytes(int offset, int length)` Return a copy of the internal array
`int` | `getCurrentPos()` Returns current file position.
`int` | `getFileSize()` Returns the size of the file.
`byte` | `read()` Read 1 byte.
`byte` | `readTTFByte()` Read 1 signed byte.
`int` | `readTTFLong()` Read 4 bytes.
`short` | `readTTFShort()` Read 2 bytes signed.
`short` | `readTTFShort(long pos)` Read 2 bytes signed at position pos without changing current position.
`java.lang.String` | `readTTFString()` Read a NUL terminated ISO-8859-1 string.
`java.lang.String` | `readTTFString(int len)` Read an ISO-8859-1 string of len bytes.
`java.lang.String` | `readTTFString(int len, int encodingID)` Read an ISO-8859-1 string of len bytes.
`int` | `readTTFUByte()` Read 1 unsigned byte.
`long` | `readTTFULong()` Read 4 bytes.
`int` | `readTTFUShort()` Read 2 bytes unsigned.
`int` | `readTTFUShort(long pos)` Read 2 bytes unsigned at position pos without changing current position.
`void` | `seekAdd(long add)` Set current file position to offset
`void` | `seekSet(long offset)` Set current file position to offset
`void` | `skip(long add)` Skip a given number of bytes.
`void` | `writeTTFUShort(int pos, int val)` Write a USHort at a given position.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### FontFileReader

    public FontFileReader(java.lang.String fileName)
                   throws java.io.IOException

  Constructor

Parameters:
  `fileName` - filename to read
Throws:
  `java.io.IOException` - In case of an I/O problem

### FontFileReader

    public FontFileReader(java.io.InputStream in)
                   throws java.io.IOException

  Constructor

Parameters:
  `in` - InputStream to read from
Throws:
  `java.io.IOException` - In case of an I/O problem

Method Detail

### seekSet

    public void seekSet(long offset)
                 throws java.io.IOException

  Set current file position to offset

  Parameters:
    `offset` - The new offset to set
  Throws:
    `java.io.IOException` - In case of an I/O problem

### seekAdd

    public void seekAdd(long add)
                 throws java.io.IOException

  Set current file position to offset

  Parameters:
    `add` - The number of bytes to advance
  Throws:
    `java.io.IOException` - In case of an I/O problem

### skip

    public void skip(long add)
              throws java.io.IOException

  Skip a given number of bytes.

  Parameters:
    `add` - The number of bytes to advance
  Throws:
    `java.io.IOException` - In case of an I/O problem

### getCurrentPos

    public int getCurrentPos()

  Returns current file position.

  Returns:
    int The current position.

### getFileSize

    public int getFileSize()

  Returns the size of the file.

  Returns:
    int The filesize

### read

    public byte read()
              throws java.io.IOException

  Read 1 byte.

  Returns:
    One byte
  Throws:
    `java.io.IOException` - If EOF is reached

### readTTFByte

    public final byte readTTFByte()
                           throws java.io.IOException

  Read 1 signed byte.

  Returns:
    One byte
  Throws:
    `java.io.IOException` - If EOF is reached

### readTTFUByte

    public final int readTTFUByte()
                           throws java.io.IOException

  Read 1 unsigned byte.

  Returns:
    One unsigned byte
  Throws:
    `java.io.IOException` - If EOF is reached

### readTTFShort

    public final short readTTFShort()
                             throws java.io.IOException

  Read 2 bytes signed.

  Returns:
    One signed short
  Throws:
    `java.io.IOException` - If EOF is reached

### readTTFUShort

    public final int readTTFUShort()
                            throws java.io.IOException

  Read 2 bytes unsigned.

  Returns:
    One unsigned short
  Throws:
    `java.io.IOException` - If EOF is reached

### writeTTFUShort

    public final void writeTTFUShort(int pos,
                                     int val)
                              throws java.io.IOException

  Write a USHort at a given position.

  Parameters:
    `pos` - The absolute position to write to
    `val` - The value to write
  Throws:
    `java.io.IOException` - If EOF is reached

### readTTFShort

    public final short readTTFShort(long pos)
                             throws java.io.IOException

  Read 2 bytes signed at position pos without changing current position.

  Parameters:
    `pos` - The absolute position to read from
  Returns:
    One signed short
  Throws:
    `java.io.IOException` - If EOF is reached

### readTTFUShort

    public final int readTTFUShort(long pos)
                            throws java.io.IOException

  Read 2 bytes unsigned at position pos without changing current position.

  Parameters:
    `pos` - The absolute position to read from
  Returns:
    One unsigned short
  Throws:
    `java.io.IOException` - If EOF is reached

### readTTFLong

    public final int readTTFLong()
                          throws java.io.IOException

  Read 4 bytes.

  Returns:
    One signed integer
  Throws:
    `java.io.IOException` - If EOF is reached

### readTTFULong

    public final long readTTFULong()
                            throws java.io.IOException

  Read 4 bytes.

  Returns:
    One unsigned integer
  Throws:
    `java.io.IOException` - If EOF is reached

### readTTFString

    public final java.lang.String readTTFString()
                                         throws java.io.IOException

  Read a NUL terminated ISO-8859-1 string.

  Returns:
    A String
  Throws:
    `java.io.IOException` - If EOF is reached

### readTTFString

    public final java.lang.String readTTFString(int len)
                                         throws java.io.IOException

  Read an ISO-8859-1 string of len bytes.

  Parameters:
    `len` - The length of the string to read
  Returns:
    A String
  Throws:
    `java.io.IOException` - If EOF is reached

### readTTFString

    public final java.lang.String readTTFString(int len,
                                                int encodingID)
                                         throws java.io.IOException

  Read an ISO-8859-1 string of len bytes.

  Parameters:
    `len` - The length of the string to read
  Returns:
    A String
  Throws:
    `java.io.IOException` - If EOF is reached

### getBytes

    public byte[] getBytes(int offset,
                           int length)
                    throws java.io.IOException

  Return a copy of the internal array

  Parameters:
    `offset` - The absolute offset to start reading from
    `length` - The number of bytes to read
  Returns:
    An array of bytes
  Throws:
    `java.io.IOException` - if out of bounds

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