Package i2p.susi.webmail.encoding

Class Encoding

java.lang.Object

i2p.susi.webmail.encoding.Encoding

Direct Known Subclasses:

Base64, EightBit, HeaderLine, HTML, QuotedPrintable, SevenBit

public abstract class Encoding
extends Object

Interface to encode/decode content transfer encodings like quoted-printable, base64 etc.

Since:

0.9.33 changed from interface to abstract class

Author:

susi

Field Summary

Fields

Modifier and Type	Field	Description
protected final Log	_log

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Encoding()

Method Summary

Modifier and Type	Method	Description
Buffer	decode(byte[] in)	This implementation just calls decode(in, 0, in.length).
Buffer	decode(byte[] in, int offset, int length)
Buffer	decode(Buffer in)	This implementation just calls decode(in.content, in.offset, in.length).
void	decode(Buffer in, Buffer out)
abstract void	decode(InputStream in, Buffer out)
Buffer	decode(String str)	This implementation just converts the string to a byte array and then calls decode(byte[]).
abstract String	encode(byte[] in)	Encode a byte array to a ASCII or ISO-8859-1 String.
void	encode(InputStream in, Writer out)	Encode an input stream of bytes to a ASCII or ISO-8859-1 String.
String	encode(String str)	Encode a (UTF-8) String to a ASCII or ISO-8859-1 String.
abstract String	getName()

Methods inherited from class java.lang.Object

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

Field Details

_log

protected final Log _log

Constructor Details

Encoding

protected Encoding()

Method Details

getName

public abstract String getName()

encode

public abstract String encode(byte[] in)
                       throws EncodingException

Encode a byte array to a ASCII or ISO-8859-1 String. Output must be SMTP-safe: Line length of 998 or less, using SMTP-safe characters, followed by \r\n, and must not start with a '.' unless escaped by a 2nd dot. For some encodings, max line length is 76.

Parameters:

in -

Returns:

Encoded string.

Throws:

EncodingException

encode

public String encode(String str)
              throws EncodingException

Encode a (UTF-8) String to a ASCII or ISO-8859-1 String. Output must be SMTP-safe: Line length of 998 or less, using SMTP-safe characters, followed by \r\n, and must not start with a '.' unless escaped by a 2nd dot. For some encodings, max line length is 76. This implementation just converts the string to a byte array and then calls encode(byte[]). Most classes will not need to override.

Parameters:

str -

Throws:

EncodingException

Since:

0.9.33 implementation moved from subclasses

See Also:

• encode(byte[])

encode

public void encode(InputStream in,
 Writer out)
            throws IOException

Encode an input stream of bytes to a ASCII or ISO-8859-1 String. Output must be SMTP-safe: Line length of 998 or less, using SMTP-safe characters, followed by \r\n, and must not start with a '.' unless escaped by a 2nd dot. For some encodings, max line length is 76. This implementation just reads the whole stream into memory and then calls encode(byte[]). Subclasses should implement a more memory-efficient method if large inputs are expected.

Throws:

IOException

Since:

0.9.33

decode

public Buffer decode(byte[] in)
              throws DecodingException

This implementation just calls decode(in, 0, in.length). Most classes will not need to override.

Parameters:

in -

Throws:

DecodingException

Since:

0.9.33 implementation moved from subclasses

See Also:

• decode(byte[], int, int)

decode

public Buffer decode(byte[] in,
 int offset,
 int length)
              throws DecodingException

Parameters:

in -

offset -

length -

Returns:

Output buffer containing decoded String.

Throws:

DecodingException

decode

public Buffer decode(String str)
              throws DecodingException

This implementation just converts the string to a byte array and then calls decode(byte[]). Most classes will not need to override.

Parameters:

str -

Returns:

null if str is null

Throws:

DecodingException

Since:

0.9.33 implementation moved from subclasses

See Also:

• decode(byte[], int, int)

decode

public Buffer decode(Buffer in)
              throws IOException

This implementation just calls decode(in.content, in.offset, in.length). Most classes will not need to override.

Parameters:

in -

Throws:

DecodingException

IOException

Since:

0.9.33 implementation moved from subclasses

See Also:

• decode(byte[], int, int)

decode

public void decode(Buffer in,
 Buffer out)
            throws IOException

Parameters:

in -

Throws:

DecodingException

IOException

Since:

0.9.34

See Also:

• decode(byte[], int, int)

decode

public abstract void decode(InputStream in,
 Buffer out)
                     throws IOException

Parameters:

in -

Throws:

DecodingException

IOException

Since:

0.9.34

See Also:

• decode(byte[], int, int)