Package org.apache.fop.afp.fonts

Class CharactersetEncoder

java.lang.Object

org.apache.fop.afp.fonts.CharactersetEncoder

Direct Known Subclasses:

CharactersetEncoder.DefaultEncoder, CharactersetEncoder.EbcdicDoubleByteLineDataEncoder

public abstract class CharactersetEncoder
extends java.lang.Object

An abstraction that wraps the encoding mechanism for encoding a Unicode character sequence into a specified format.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	CharactersetEncoder.DefaultEncoder	The default encoder is used for encoding IBM format SBCS (single byte character sets), this the primary format for most Latin character sets.
(package private) static class	CharactersetEncoder.EbcdicDoubleByteLineDataEncoder	The EBCDIC double byte encoder is used for encoding IBM format DBCS (double byte character sets) with an EBCDIC code-page.
static class	CharactersetEncoder.EncodedChars	A container for encoded character bytes

Field Summary

Fields

Modifier and Type	Field	Description
private java.nio.charset.CharsetEncoder	encoder

Constructor Summary

Constructors

Modifier	Constructor	Description
private	CharactersetEncoder(java.lang.String encoding)

Method Summary

Modifier and Type	Method	Description
(package private) boolean	canEncode(char c)	Tells whether or not this encoder can encode the given character.
(package private) CharactersetEncoder.EncodedChars	encode(java.lang.CharSequence chars)	Encodes a character sequence to a byte array.
static CharactersetEncoder.EncodedChars	encodeSBCS(java.lang.CharSequence chars, java.lang.String encoding)	Encodes chars into a format specified by encoding.
(package private) abstract CharactersetEncoder.EncodedChars	getEncodedChars(byte[] byteArray, int length)

Methods inherited from class java.lang.Object

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

Field Detail

encoder

private final java.nio.charset.CharsetEncoder encoder

Constructor Detail

CharactersetEncoder

private CharactersetEncoder(java.lang.String encoding)

Method Detail

canEncode

final boolean canEncode(char c)

Tells whether or not this encoder can encode the given character.

Parameters:

c - the character

Returns:

true if, and only if, this encoder can encode the given character

Throws:

java.lang.IllegalStateException - - If an encoding operation is already in progress

encode

final CharactersetEncoder.EncodedChars encode(java.lang.CharSequence chars)
                                       throws java.nio.charset.CharacterCodingException

Encodes a character sequence to a byte array.

Parameters:

chars - the character sequence

Returns:

the encoded character sequence

Throws:

java.nio.charset.CharacterCodingException - if the encoding operation fails

getEncodedChars

abstract CharactersetEncoder.EncodedChars getEncodedChars(byte[] byteArray,
                                                          int length)

encodeSBCS

public static CharactersetEncoder.EncodedChars encodeSBCS(java.lang.CharSequence chars,
                                                          java.lang.String encoding)
                                                   throws java.nio.charset.CharacterCodingException

Encodes chars into a format specified by encoding.

Parameters:

chars - the character sequence

encoding - the encoding type

Returns:

encoded data

Throws:

java.nio.charset.CharacterCodingException - if encoding fails