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|
#-- vim:sw=2:et
#++
#
# :title: Google and Wikipedia search plugin for rbot
#
# Author:: Tom Gilbert (giblet) <tom@linuxbrit.co.uk>
# Author:: Giuseppe "Oblomov" Bilotta <giuseppe.bilotta@gmail.com>
#
# Copyright:: (C) 2002-2005 Tom Gilbert
# Copyright:: (C) 2006 Tom Gilbert, Giuseppe Bilotta
# Copyright:: (C) 2006-2007 Giuseppe Bilotta
# TODO:: use lr=lang_<code> or whatever is most appropriate to let google know
# it shouldn't use the bot's location to find the preferred language
# TODO:: support localized uncyclopedias -- not easy because they have different names
# for most languages
GOOGLE_SEARCH = "http://www.google.com/search?oe=UTF-8&q="
GOOGLE_WAP_SEARCH = "http://www.google.com/wml/search?hl=en&q="
GOOGLE_WAP_LINK = /<a accesskey="(\d)" href=".*?u=(.*?)">(.*?)<\/a>/im
GOOGLE_CALC_RESULT = %r{<img src=/images/calc_img\.gif(?: width=40 height=30 alt="")?></td><td> </td><td nowrap>(?:<h2 class=r>)?<font size=\+1><b>(.+)</b>(?:</h2>)?</td>}
GOOGLE_DEF_RESULT = %r{<p> (Web definitions for .*?)<br/>(.*?)<br/>(.*?)\s-\s+<a href}
class SearchPlugin < Plugin
Config.register Config::IntegerValue.new('google.hits',
:default => 3,
:desc => "Number of hits to return from Google searches")
Config.register Config::IntegerValue.new('google.first_par',
:default => 0,
:desc => "When set to n > 0, the bot will return the first paragraph from the first n search hits")
Config.register Config::IntegerValue.new('wikipedia.hits',
:default => 3,
:desc => "Number of hits to return from Wikipedia searches")
Config.register Config::IntegerValue.new('wikipedia.first_par',
:default => 1,
:desc => "When set to n > 0, the bot will return the first paragraph from the first n wikipedia search hits")
def help(plugin, topic="")
case topic
when "search", "google"
"#{topic} <string> => search google for <string>"
when "gcalc"
"gcalc <equation> => use the google calculator to find the answer to <equation>"
when "gdef"
"gdef <term(s)> => use the google define mechanism to find a definition of <term(s)>"
when "wp"
"wp [<code>] <string> => search for <string> on Wikipedia. You can select a national <code> to only search the national Wikipedia"
when "unpedia"
"unpedia <string> => search for <string> on Uncyclopedia"
else
"search <string> (or: google <string>) => search google for <string> | wp <string> => search for <string> on Wikipedia | unpedia <string> => search for <string> on Uncyclopedia"
end
end
def google(m, params)
what = params[:words].to_s
searchfor = CGI.escape what
# This method is also called by other methods to restrict searching to some sites
if params[:site]
site = "site:#{params[:site]}+"
else
site = ""
end
# It is also possible to choose a filter to remove constant parts from the titles
# e.g.: "Wikipedia, the free encyclopedia" when doing Wikipedia searches
filter = params[:filter] || ""
url = GOOGLE_WAP_SEARCH + site + searchfor
hits = params[:hits] || @bot.config['google.hits']
first_pars = params[:firstpar] || @bot.config['google.first_par']
single = (hits == 1 and first_pars == 1)
begin
wml = @bot.httputil.get(url)
raise unless wml
rescue => e
m.reply "error googling for #{what}"
return
end
results = wml.scan(GOOGLE_WAP_LINK)
if results.length == 0
m.reply "no results found for #{what}"
return
end
single ||= (results.length==1)
urls = Array.new
results = results[0...hits].map { |res|
n = res[0]
t = Utils.decode_html_entities res[2].gsub(filter, '').strip
u = URI.unescape res[1]
urls.push(u)
single ? u : "#{n}. #{Bold}#{t}#{Bold}: #{u}"
}.join(" | ")
# If we return a single, full result, change the output to a more compact representation
if single
m.reply "Result for %s: %s -- %s" % [what, results, Utils.get_first_pars(urls, first_pars)], :overlong => :truncate
return
end
m.reply "Results for #{what}: #{results}", :split_at => /\s+\|\s+/
return unless first_pars > 0
Utils.get_first_pars urls, first_pars, :message => m
end
def gcalc(m, params)
what = params[:words].to_s
searchfor = CGI.escape(what)
debug "Getting gcalc thing: #{searchfor.inspect}"
url = GOOGLE_SEARCH + searchfor
begin
html = @bot.httputil.get(url)
rescue => e
m.reply "error googlecalcing #{what}"
return
end
debug "#{html.size} bytes of html recieved"
results = html.scan(GOOGLE_CALC_RESULT)
debug "results: #{results.inspect}"
if results.length != 1
m.reply "couldn't calculate #{what}"
return
end
result = results[0][0].ircify_html
debug "replying with: #{result.inspect}"
m.reply "#{result}"
end
def gdef(m, params)
what = params[:words].to_s
searchfor = CGI.escape("define " + what)
debug "Getting gdef thing: #{searchfor.inspect}"
url = GOOGLE_WAP_SEARCH + searchfor
begin
html = @bot.httputil.get(url)
rescue => e
m.reply "error googledefining #{what}"
return
end
debug html
results = html.scan(GOOGLE_DEF_RESULT)
debug "results: #{results.inspect}"
if results.length != 1
m.reply "couldn't find a definition for #{what} on Google"
return
end
head = results[0][0].ircify_html
text = results[0][1].ircify_html
link = results[0][2]
m.reply "#{head} -- #{link}\n#{text}"
end
def wikipedia(m, params)
lang = params[:lang]
site = "#{lang.nil? ? '' : lang + '.'}wikipedia.org"
debug "Looking up things on #{site}"
params[:site] = site
params[:filter] = / - Wikipedia.*$/
params[:hits] = @bot.config['wikipedia.hits']
params[:firstpar] = @bot.config['wikipedia.first_par']
return google(m, params)
end
def unpedia(m, params)
site = "uncyclopedia.org"
debug "Looking up things on #{site}"
params[:site] = site
params[:filter] = / - Uncyclopedia.*$/
params[:hits] = @bot.config['wikipedia.hits']
params[:firstpar] = @bot.config['wikipedia.first_par']
return google(m, params)
end
end
plugin = SearchPlugin.new
plugin.map "search *words", :action => 'google'
plugin.map "google *words", :action => 'google'
plugin.map "gcalc *words", :action => 'gcalc'
plugin.map "gdef *words", :action => 'gdef'
plugin.map "wp :lang *words", :action => 'wikipedia', :requirements => { :lang => /^\w\w\w?$/ }
plugin.map "wp *words", :action => 'wikipedia'
plugin.map "unpedia *words", :action => 'unpedia'
|
