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package com.sun.mail.imap.protocol;
import java.util.*;
import com.sun.mail.iap.*;
/**
* This class and its inner class represent the response to the
* NAMESPACE command. <p>
*
* See <A HREF="http://www.ietf.org/rfc/rfc2342.txt">RFC 2342</A>.
*
* @author Bill Shannon
*/
public class Namespaces {
/**
* A single namespace entry.
*/
public static class Namespace {
/**
* Prefix string for the namespace.
*/
public String prefix;
/**
* Delimiter between names in this namespace.
*/
public char delimiter;
/**
* Parse a namespace element out of the response.
*/
public Namespace(Response r) throws ProtocolException {
// Namespace_Element = "(" string SP (<"> QUOTED_CHAR <"> / nil)
// *(Namespace_Response_Extension) ")"
if (r.readByte() != '(')
throw new ProtocolException(
"Missing '(' at start of Namespace");
// first, the prefix
prefix = BASE64MailboxDecoder.decode(r.readString());
r.skipSpaces();
// delimiter is a quoted character or NIL
if (r.peekByte() == '"') {
r.readByte();
delimiter = (char)r.readByte();
if (delimiter == '\\')
delimiter = (char)r.readByte();
if (r.readByte() != '"')
throw new ProtocolException(
"Missing '\"' at end of QUOTED_CHAR");
} else {
String s = r.readAtom();
if (s == null)
throw new ProtocolException("Expected NIL, got null");
if (!s.equalsIgnoreCase("NIL"))
throw new ProtocolException("Expected NIL, got " + s);
delimiter = 0;
}
// at end of Namespace data?
if (r.peekByte() != ')') {
// otherwise, must be a Namespace_Response_Extension
// Namespace_Response_Extension = SP string SP
// "(" string *(SP string) ")"
r.skipSpaces();
r.readString();
r.skipSpaces();
r.readStringList();
}
if (r.readByte() != ')')
throw new ProtocolException("Missing ')' at end of Namespace");
}
};
/**
* The personal namespaces.
* May be null.
*/
public Namespace[] personal;
/**
* The namespaces for other users.
* May be null.
*/
public Namespace[] otherUsers;
/**
* The shared namespace.
* May be null.
*/
public Namespace[] shared;
/**
* Parse out all the namespaces.
*/
public Namespaces(Response r) throws ProtocolException {
personal = getNamespaces(r);
otherUsers = getNamespaces(r);
shared = getNamespaces(r);
}
/**
* Parse out one of the three sets of namespaces.
*/
private Namespace[] getNamespaces(Response r) throws ProtocolException {
r.skipSpaces();
// Namespace = nil / "(" 1*( Namespace_Element) ")"
if (r.peekByte() == '(') {
Vector v = new Vector();
r.readByte();
do {
Namespace ns = new Namespace(r);
v.addElement(ns);
} while (r.peekByte() != ')');
r.readByte();
Namespace[] nsa = new Namespace[v.size()];
v.copyInto(nsa);
return nsa;
} else {
String s = r.readAtom();
if (s == null)
throw new ProtocolException("Expected NIL, got null");
if (!s.equalsIgnoreCase("NIL"))
throw new ProtocolException("Expected NIL, got " + s);
return null;
}
}
}