com.google.typography.font.sfntly.data

Class FontInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

com.google.typography.font.sfntly.data.FontInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class FontInputStream
extends java.io.FilterInputStream

An input stream for reading font data. The data types used are as listed:

BYTE	8-bit unsigned integer.
CHAR	8-bit signed integer.
USHORT	16-bit unsigned integer.
SHORT	16-bit signed integer.
UINT24	24-bit unsigned integer.
ULONG	32-bit unsigned integer.
LONG	32-bit signed integer.
Fixed	32-bit signed fixed-point number (16.16)
FUNIT	Smallest measurable distance in the em space.
FWORD	16-bit signed integer (SHORT) that describes a quantity in FUnits.
UFWORD	16-bit unsigned integer (USHORT) that describes a quantity in FUnits.
F2DOT14	16-bit signed fixed number with the low 14 bits of fraction (2.14).
LONGDATETIME	Date represented in number of seconds since 12:00 midnight, January 1, 1904. The value is represented as a signed 64-bit integer.

Author:

Stuart Gill

See Also:

FontOutputStream

Constructor Summary

Constructors

Constructor and Description
FontInputStream(java.io.InputStream is) Constructor.
FontInputStream(java.io.InputStream is, int length) Constructor for a bounded font input stream.

Method Summary

Modifier and Type	Method and Description
long	position() Get the current position in the stream in bytes.
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
int	readChar() Read a Char value.
long	readDateTimeAsLong() Read a DateTime value as a long.
int	readFixed() Read a Fixed value.
int	readLong() Read a Long value.
int	readShort() Read a Short value.
int	readUInt24() Read a UInt24 value.
long	readULong() Read a ULong value.
int	readULongAsInt() Read a ULong value as an int.
int	readUShort() Read a UShort value.
long	skip(long n)

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

FontInputStream

public FontInputStream(java.io.InputStream is)

Constructor.

Parameters:

is - input stream to wrap

FontInputStream

public FontInputStream(java.io.InputStream is,
                       int length)

Constructor for a bounded font input stream.

Parameters:

is - input stream to wrap

length - the maximum length of bytes to read

Method Detail

read

public int read()
         throws java.io.IOException

Overrides:

read in class java.io.FilterInputStream

Throws:

java.io.IOException

read

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

Overrides:

read in class java.io.FilterInputStream

Throws:

java.io.IOException

read

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

Overrides:

read in class java.io.FilterInputStream

Throws:

java.io.IOException

position

public long position()

Get the current position in the stream in bytes.

Returns:

the current position in bytes

readChar

public int readChar()
             throws java.io.IOException

Read a Char value.

Returns:

Char value

Throws:

java.io.IOException

readUShort

public int readUShort()
               throws java.io.IOException

Read a UShort value.

Returns:

UShort value

Throws:

java.io.IOException

readShort

public int readShort()
              throws java.io.IOException

Read a Short value.

Returns:

Short value

Throws:

java.io.IOException

readUInt24

public int readUInt24()
               throws java.io.IOException

Read a UInt24 value.

Returns:

UInt24 value

Throws:

java.io.IOException

readULong

public long readULong()
               throws java.io.IOException

Read a ULong value.

Returns:

ULong value

Throws:

java.io.IOException

readULongAsInt

public int readULongAsInt()
                   throws java.io.IOException

Read a ULong value as an int. If the value is not representable as an integer an ArithmeticException is thrown.

Returns:

Ulong value

Throws:

java.io.IOException

java.lang.ArithmeticException

readLong

public int readLong()
             throws java.io.IOException

Read a Long value.

Returns:

Long value

Throws:

java.io.IOException

readFixed

public int readFixed()
              throws java.io.IOException

Read a Fixed value.

Returns:

Fixed value

Throws:

java.io.IOException

readDateTimeAsLong

public long readDateTimeAsLong()
                        throws java.io.IOException

Read a DateTime value as a long.

Returns:

DateTime value.

Throws:

java.io.IOException

skip

public long skip(long n)
          throws java.io.IOException

Overrides:

skip in class java.io.FilterInputStream

Throws:

java.io.IOException