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This project is mavenized version of the gnu.classpath.ext:inetlib jar.
All the code is the same as in the official jar from GNU.
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/*
* Namespaces.java
* Copyright (C) 2004 The Free Software Foundation
*
* This file is part of GNU inetlib, a library.
*
* GNU inetlib is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GNU inetlib is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Linking this library statically or dynamically with other modules is
* making a combined work based on this library. Thus, the terms and
* conditions of the GNU General Public License cover the whole
* combination.
*
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce an
* executable, regardless of the license terms of these independent
* modules, and to copy and distribute the resulting executable under
* terms of your choice, provided that you also meet, for each linked
* independent module, the terms and conditions of the license of that
* module. An independent module is a module which is not derived from
* or based on this library. If you modify this library, you may extend
* this exception to your version of the library, but you are not
* obliged to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
package gnu.inet.imap;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
/**
* A tuple of IMAP namespaces, as defined in RFC 2342.
*
* @author Chris Burdess
*/
public class Namespaces
{
/**
* An individual namespace specification.
*/
public static class Namespace
{
String prefix;
char delimiter;
Map extensions;
/**
* Returns the namespace prefix.
*/
public String getPrefix()
{
return prefix;
}
/**
* Returns the delimiter character for the namespace.
*/
public char getDelimiter()
{
return delimiter;
}
/**
* Returns the dictionary of extension values for the namespace,
* or null if there are no extensions.
*/
public Map getExtensions()
{
return extensions;
}
/**
* Debugging.
*/
public String toString()
{
StringBuffer buf = new StringBuffer();
buf.append('(');
buf.append(quote(prefix));
buf.append(' ');
buf.append(quote(delimiter));
if (extensions != null)
{
buf.append(' ');
for (Iterator i = extensions.entrySet().iterator(); i.hasNext(); )
{
Map.Entry entry = (Map.Entry) i.next();
String key = (String) entry.getKey();
buf.append(quote(key));
buf.append(' ');
buf.append(format(entry.getValue()));
}
}
buf.append(')');
return buf.toString();
}
static String quote(String text)
{
return '"' + text + '"';
}
static String quote(char c)
{
char[] chars = new char[] { '"', c, '"' };
return new String(chars);
}
private String format(Object value)
{
if (value == null)
{
return IMAPConstants.NIL;
}
else if (value instanceof String)
{
return quote((String) value);
}
else
{
List list = (List) value;
int len = list.size();
StringBuffer buf = new StringBuffer();
buf.append('(');
for (int i = 0; i < len; i++)
{
if (i > 0)
{
buf.append(' ');
}
buf.append(format(list.get(i)));
}
buf.append(')');
return buf.toString();
}
}
}
List personal;
List other;
List shared;
Namespaces(String text)
{
List acc = new ArrayList();
int len = text.length();
parse(text, 0, len, acc);
len = acc.size();
if (len > 0)
{
personal = parseNamespaceList(acc.get(0));
if (len > 1)
{
other = parseNamespaceList(acc.get(1));
if (len > 2)
{
shared = parseNamespaceList(acc.get(2));
}
}
}
}
/**
* Returns the list of personal namespaces.
*/
public Namespace[] getPersonal()
{
return toArray(personal);
}
/**
* Returns the list of other users' namespaces.
*/
public Namespace[] getOther()
{
return toArray(other);
}
/**
* Returns the list of shared namespaces.
*/
public Namespace[] getShared()
{
return toArray(shared);
}
private Namespace[] toArray(List namespaceList)
{
if (namespaceList == null)
{
return null;
}
Namespace[] ret = new Namespace[namespaceList.size()];
namespaceList.toArray(ret);
return ret;
}
/**
* Parse the specified text into an S-expression.
*/
static int parse(String text, int start, int len, List acc)
{
StringBuffer buf = new StringBuffer();
boolean inLiteral = false;
for (int i = start; i < len; i++)
{
char c = text.charAt(i);
if (inLiteral)
{
if (c == '"')
{
String literal = buf.toString();
buf.setLength(0);
inLiteral = false;
acc.add(literal);
}
else
{
buf.append(c);
}
}
else
{
switch (c)
{
case ' ':
String token = buf.toString();
if (IMAPConstants.NIL.equals(token))
{
acc.add(null);
}
buf.setLength(0);
break;
case '"':
inLiteral = true;
buf.setLength(0);
break;
case '(':
List sub = new ArrayList();
i = parse(text, i + 1, len, sub);
acc.add(sub);
break;
case ')':
return i;
}
}
}
return len;
}
private List parseNamespaceList(Object ns)
{
if (ns == null)
{
return null;
}
List list = (List) ns;
int len = list.size();
List ret = new ArrayList(len);
for (int i = 0; i < len; i++)
{
ret.add(parseNamespace((List) list.get(i)));
}
return ret;
}
private Namespace parseNamespace(List comps)
{
int len = comps.size();
Namespace ns = new Namespace();
ns.prefix = (String) comps.get(0);
ns.delimiter = ((String) comps.get(1)).charAt(0);
if (len > 2)
{
ns.extensions = new TreeMap();
for (int i = 2; i < len; i += 2)
{
String key = (String) comps.get(i);
Object val = (i == len - 1) ? null : comps.get(i + 1);
ns.extensions.put(key, val);
}
}
return ns;
}
/**
* Debugging.
*/
public String toString()
{
StringBuffer buf = new StringBuffer();
appendNamespaceList(buf, personal);
buf.append(' ');
appendNamespaceList(buf, other);
buf.append(' ');
appendNamespaceList(buf, shared);
return buf.toString();
}
private void appendNamespaceList(StringBuffer buf, List list)
{
if (list == null)
{
buf.append(IMAPConstants.NIL);
}
else
{
int len = list.size();
buf.append('(');
for (int i = 0; i < len; i++)
{
if (i > 0)
{
buf.append(' ');
}
buf.append(list.get(i));
}
buf.append(')');
}
}
}
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