From: Paul Brannan <pbrannan@...>
Date: 2005-04-27T00:32:31+09:00
Subject: Re: net/imap retrieve list of folders

On Tue, Apr 26, 2005 at 03:44:02PM +0900, Robby Russell wrote:
> I am playing with Net::IMAP and trying to figure out how to retrieve the
> list of subscribed folders. In all the examples that I have come across,
> none of them show this. I can find messages in a specific folder, but
> for my app I will need to build a list of folders that the user is
> subscribed to.
> 
> How/can this be done?

Use Net::IMAP#lsub:

irb(main):016:0> imap.subscribe('mail/ruby')
=> #<struct Net::IMAP::TaggedResponse tag="RUBY0011", name="OK", data=#<struct Net::IMAP::ResponseText code=nil, text="SUBSCRIBE completed">, raw_data="RUBY0011 OK SUBSCRIBE completed\r\n">
irb(main):017:0> imap.subscribe('mail/ruby-core')
=> #<struct Net::IMAP::TaggedResponse tag="RUBY0012", name="OK", data=#<struct Net::IMAP::ResponseText code=nil, text="SUBSCRIBE completed">, raw_data="RUBY0012 OK SUBSCRIBE completed\r\n">
irb(main):018:0> imap.subscribe('mail/rubygems')
=> #<struct Net::IMAP::TaggedResponse tag="RUBY0013", name="OK", data=#<struct Net::IMAP::ResponseText code=nil, text="SUBSCRIBE completed">, raw_data="RUBY0013 OK SUBSCRIBE completed\r\n">
irb(main):019:0> imap.lsub('mail', '*')
=> [#<struct Net::IMAP::MailboxList attr=[], delim="/", name="mail/ruby">, #<struct Net::IMAP::MailboxList attr=[], delim="/", name="mail/ruby-core">, #<struct Net::IMAP::MailboxList attr=[], delim="/", name="mail/rubygems">]

You can find the documentation for #list and #lsub in imap.rb.

Paul