[Classpath-inetlib] POP3Connection.uidl()

[petite_abeille]

Hello,

Here is a little addition to POP3Connection which handles the no-arg 
UIDL command.

It returns a Map of Message Number/UID pairs.

public Map uidl() throws IOException
{
    this.send ( POP3Connection.UIDL );

    if ( this.getResponse () == OK )
    {
        Map     aMap = new LinkedHashMap();

        for ( String aLine = in.readLine(); ".".equals( aLine ) == 
false; aLine = in.readLine() )
        {
            int     anIndex = aLine.indexOf( ' ' );
            String  aNumber = aLine.substring( 0, anIndex );
            String  anUID = aLine.substring( anIndex + 1 );

            try
            {
                aMap.put( Integer.valueOf( aNumber ), anUID );
            }
            catch (NumberFormatException anException)
            {
                Logger.getInstance().log( "pop3", 
anException.getMessage() );
            }
        }

        if ( aMap.isEmpty() == false )
        {
            return aMap;
        }
    }

    return null;
}

Cheers,

PA.