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=begin
Feed2Imap - RSS/Atom Aggregator uploading to an IMAP Server
Copyright (c) 2005 Lucas Nussbaum <lucas@lucas-nussbaum.net>
This program 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.
This program 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 program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
=end
require 'feed2imap/sgml-parser.rb'
# this class provides a simple SGML parser that removes HTML tags
class HTML2TextParser < SGMLParser
attr_reader :savedata
def initialize(verbose = false)
@savedata = ''
@pre = false
@href = nil
@links = []
super(verbose)
end
def handle_data(data)
# let's remove all CR
data.gsub!(/\n/, '') if not @pre
@savedata << data
end
def unknown_starttag(tag, attrs)
case tag
when 'p'
@savedata << "\n\n"
when 'br'
@savedata << "\n"
when 'b'
@savedata << '*'
when 'u'
@savedata << '_'
when 'i'
@savedata << '/'
when 'pre'
@savedata << "\n\n"
@pre = true
when 'a'
# find href in args
@href = nil
attrs.each do |a|
if a[0] == 'href'
@href = a[1]
end
end
@links << @href.gsub(/^("|'|)(.*)("|')$/,'\2')
end
end
def close
super
if @links.length > 0
@savedata << "\n\n"
@links.each_index do |i|
@savedata << "[#{i+1}] #{@links[i]}\n"
end
end
end
def unknown_endtag(tag)
case tag
when 'b'
@savedata << '*'
when 'u'
@savedata << '_'
when 'i'
@savedata << '/'
when 'pre'
@savedata << "\n\n"
@pre = false
when 'a'
if @href
@savedata << "[#{@links.length}]"
@href = nil
end
end
end
end
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