com.sun.mail.imap.protocol
类 BASE64MailboxEncoder

java.lang.Object
  com.sun.mail.imap.protocol.BASE64MailboxEncoder

public class BASE64MailboxEncoder
extends Object

from RFC2060 5.1.3. Mailbox International Naming Convention By convention, international mailbox names are specified using a modified version of the UTF-7 encoding described in [UTF-7]. The purpose of these modifications is to correct the following problems with UTF-7: 1) UTF-7 uses the "+" character for shifting; this conflicts with the common use of "+" in mailbox names, in particular USENET newsgroup names. 2) UTF-7's encoding is BASE64 which uses the "/" character; this conflicts with the use of "/" as a popular hierarchy delimiter. 3) UTF-7 prohibits the unencoded usage of "\"; this conflicts with the use of "\" as a popular hierarchy delimiter. 4) UTF-7 prohibits the unencoded usage of "~"; this conflicts with the use of "~" in some servers as a home directory indicator. 5) UTF-7 permits multiple alternate forms to represent the same string; in particular, printable US-ASCII chararacters can be represented in encoded form. In modified UTF-7, printable US-ASCII characters except for "&" represent themselves; that is, characters with octet values 0x20-0x25 and 0x27-0x7e. The character "&" (0x26) is represented by the two- octet sequence "&-". All other characters (octet values 0x00-0x1f, 0x7f-0xff, and all Unicode 16-bit octets) are represented in modified BASE64, with a further modification from [UTF-7] that "," is used instead of "/". Modified BASE64 MUST NOT be used to represent any printing US-ASCII character which can represent itself. "&" is used to shift to modified BASE64 and "-" to shift back to US- ASCII. All names start in US-ASCII, and MUST end in US-ASCII (that is, a name that ends with a Unicode 16-bit octet MUST end with a "- "). Crispin Standards Track [Page 15] RFC 2060 IMAP4rev1 December 1996 For example, here is a mailbox name which mixes English, Japanese, and Chinese text: ~peter/mail/&ZeVnLIqe-/&U,BTFw- This class will do the correct Encoding for the IMAP mailboxes

版本：

1.8, 07/05/04

作者：

Christopher Cotton

字段摘要

protected byte[]	buffer
protected int	bufsize
protected Writer	out
protected boolean	started

构造方法摘要

BASE64MailboxEncoder(Writer what)
Create a BASE64 encoder

方法摘要

protected void	encode()
static String	encode(String original)
void	flush()
void	write(int c)

从类 java.lang.Object 继承的方法

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

字段详细信息

buffer

protected byte[] buffer

bufsize

protected int bufsize

started

protected boolean started

out

protected Writer out

构造方法详细信息

BASE64MailboxEncoder

public BASE64MailboxEncoder(Writer what)

Create a BASE64 encoder

方法详细信息

encode

public static String encode(String original)

write

public void write(int c)

flush

public void flush()

encode

protected void encode()
               throws IOException

抛出：

IOException