/data/rbot/plugins/search.rb
Ruby | 413 lines | 332 code | 52 blank | 29 comment | 45 complexity | 1d5b6c6866b66e456174cae344b13797 MD5 | raw file
- #-- 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 = "https://www.google.com/search?hl=en&oe=UTF-8&ie=UTF-8&gbv=1&q="
- GOOGLE_WAP_SEARCH = "https://www.google.com/m/search?hl=en&ie=UTF-8&gbv=1&q="
- GOOGLE_WAP_LINK = /<a\s+href="\/url\?(q=[^"]+)"[^>]*>\s*<div[^>]*>(.*?)\s*<\/div>/im
- GOOGLE_CALC_RESULT = />Calculator<\/span>(?:<\/?[^>]+>\s*)+([^<]+)/
- GOOGLE_XPATH_DEF = "//img[@id='flex_text_audio_icon_chunk']/../../../../div[3]//text()"
- DDG_API_SEARCH = "http://api.duckduckgo.com/?format=xml&no_html=1&skip_disambig=1&no_redirect=0&q="
- WOLFRAM_API_SEARCH = "http://api.wolframalpha.com/v2/query?input=%{terms}&appid=%{key}&format=plaintext" +
- "&scantimeout=3.0&podtimeout=4.0&formattimeout=8.0&parsetimeout=5.0" +
- "&excludepodid=SeriesRepresentations:*"
- WOLFRAM_API_KEY = "9RW6XR-QTL2JT7J4W"
- class SearchPlugin < Plugin
- Config.register Config::IntegerValue.new('duckduckgo.hits',
- :default => 3, :validate => Proc.new{|v| v > 0},
- :desc => "Number of hits to return from searches")
- Config.register Config::IntegerValue.new('duckduckgo.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('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 "ddg"
- "Use '#{topic} <string>' to return a search or calculation from " +
- "DuckDuckGo. Use #{topic} define <string> to return a definition."
- 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 "wa"
- "wa <string> => searches WolframAlpha for <string>"
- 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> | ddg <string> to search DuckDuckGo | wp <string> => search for <string> on Wikipedia | wa <string> => search for <string> on WolframAlpha | unpedia <string> => search for <string> on Uncyclopedia"
- end
- end
- def duckduckgo(m, params)
- what = params[:words].to_s
- terms = CGI.escape what
- url = DDG_API_SEARCH + terms
- hits = @bot.config['duckduckgo.hits']
- first_pars = params[:firstpar] || @bot.config['duckduckgo.first_par']
- single = params[:lucky] || (hits == 1 and first_pars == 1)
- begin
- feed = @bot.httputil.get(url)
- raise unless feed
- rescue => e
- m.reply "error duckduckgoing for #{what}"
- return
- end
- xml = REXML::Document.new feed
- heading = xml.elements['//Heading/text()'].to_s
- # answer is returned for calculations
- answer = xml.elements['//Answer/text()'].to_s
- # abstract is returned for definitions etc
- abstract = xml.elements['//AbstractText/text()'].to_s
- abfrom = ""
- unless abstract.empty?
- absrc = xml.elements['//AbstractSource/text()'].to_s
- aburl = xml.elements['//AbstractURL/text()'].to_s
- unless absrc.empty? and aburl.empty?
- abfrom = " --"
- abfrom << " " << absrc unless absrc.empty?
- abfrom << " " << aburl unless aburl.empty?
- end
- end
- # but also definition (yes, you can have both, see e.g. printf)
- definition = xml.elements['//Definition/text()'].to_s
- deffrom = ""
- unless definition.empty?
- defsrc = xml.elements['//Definition/@source/text()'].to_s
- defurl = xml.elements['//Definition/@url/text()'].to_s
- unless defsrc.empty? and defurl.empty?
- deffrom = " --"
- deffrom << " " << defsrc unless defsrc.empty?
- deffrom << " " << defurl unless defurl.empty?
- end
- end
- if heading.empty? and answer.empty? and abstract.empty? and definition.empty?
- m.reply "no results"
- return
- end
- # if we got a one-shot answer (e.g. a calculation, return it)
- unless answer.empty?
- m.reply answer
- return
- end
- # otherwise, return the abstract, followed by as many hits as found
- unless heading.empty? or abstract.empty?
- m.reply "%{bold}%{heading}:%{bold} %{abstract}%{abfrom}" % {
- :bold => Bold, :heading => heading,
- :abstract => abstract, :abfrom => abfrom
- }
- end
- unless heading.empty? or definition.empty?
- m.reply "%{bold}%{heading}:%{bold} %{abstract}%{abfrom}" % {
- :bold => Bold, :heading => heading,
- :abstract => definition, :abfrom => deffrom
- }
- end
- # return zeroclick search results
- links, texts = [], []
- xml.elements.each("//Results/Result/FirstURL") { |element|
- links << element.text
- break if links.size == hits
- }
- return if links.empty?
- xml.elements.each("//Results/Result/Text") { |element|
- texts << " #{element.text}"
- break if links.size == hits
- }
- # TODO see treatment of `single` in google search
- single ||= (links.length == 1)
- pretty = []
- links.each_with_index do |u, i|
- t = texts[i]
- pretty.push("%{n}%{b}%{t}%{b}%{sep}%{u}" % {
- :n => (single ? "" : "#{i}. "),
- :sep => (single ? " -- " : ": "),
- :b => Bold, :t => t, :u => u
- })
- end
- result_string = pretty.join(" | ")
- # If we return a single, full result, change the output to a more compact representation
- if single
- fp = first_pars > 0 ? " -- #{Utils.get_first_pars(@bot, links, first_pars)}" : ""
- m.reply("Result for %{what}: %{string}%{fp}" % {
- :what => what, :string => result_string, :fp => fp
- }, :overlong => :truncate)
- return
- end
- m.reply "Results for #{what}: #{result_string}", :split_at => /\s+\|\s+/
- return unless first_pars > 0
- Utils.get_first_pars(@bot, urls, first_pars, :message => m)
- end
- def google(m, params)
- what = params[:words].to_s
- if what.match(/^define:/)
- return google_define(m, what, params)
- end
- 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']
- hits = 1 if params[:lucky]
- first_pars = params[:firstpar] || @bot.config['google.first_par']
- single = params[:lucky] || (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
- results = results.map {|result|
- url = CGI::parse(Utils.decode_html_entities(result[0]))['q'].first
- title = Utils.decode_html_entities(result[1].gsub(/<\/?[^>]+>/, ''))
- [url, title] unless url.empty? or title.empty?
- }.reject {|item| not item}[0..hits]
- result_string = results.map {|url, title| "#{Bold}#{title}#{NormalText}: #{url}"}
- if params[:lucky]
- m.reply result_string.first
- Utils.get_first_pars(@bot, [results.map {|url, title| url}.first], first_pars, :message => m)
- return
- end
- m.reply "Results for #{what}: #{result_string.join(' | ')}", :split_at => /\s+\|\s+/
- return unless first_pars > 0
- Utils.get_first_pars(@bot, results.map {|url, title| url}, first_pars, :message => m)
- end
- def google_define(m, what, params)
- begin
- wml = @bot.httputil.get(GOOGLE_SEARCH + CGI.escape(what))
- raise unless wml
- rescue => e
- m.reply "error googling for #{what}"
- return
- end
- begin
- related_index = wml.index(/Related phrases:/, 0)
- raise unless related_index
- defs_index = wml.index(/Definitions of <b>/, related_index)
- raise unless defs_index
- defs_end = wml.index(/<input/, defs_index)
- raise unless defs_end
- rescue => e
- m.reply "no results found for #{what}"
- return
- end
- related = wml[related_index...defs_index]
- defs = wml[defs_index...defs_end]
- m.reply defs.ircify_html(:a_href => Underline), :split_at => (Underline + ' ')
- end
- def lucky(m, params)
- params.merge!(:lucky => true)
- google(m, params)
- end
- def gcalc(m, params)
- what = params[:words].to_s
- searchfor = CGI.escape(what)
- debug "Getting gcalc thing: #{searchfor.inspect}"
- url = GOOGLE_WAP_SEARCH + searchfor
- begin
- html = @bot.httputil.get(url)
- rescue => e
- m.reply "error googlecalcing #{what}"
- return
- end
- debug "#{html.size} bytes of html recieved"
- debug html
- candidates = html.match(GOOGLE_CALC_RESULT)
- debug "candidates: #{candidates.inspect}"
- if candidates.nil?
- m.reply "couldn't calculate #{what}"
- return
- end
- result = candidates[1].remove_nonascii
- debug "replying with: #{result.inspect}"
- m.reply result.ircify_html
- 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
- resp = @bot.httputil.get(url, resp: true)
- rescue => e
- m.reply "error googledefining #{what}"
- return
- end
- results = resp.xpath(GOOGLE_XPATH_DEF).map(&:content)
- if results.empty?
- m.reply "couldn't find a definition for #{what} on Google"
- else
- m.reply "#{results.first} -- #{results[1..-1].join(' ')}"
- end
- end
- def wolfram(m, params)
- what = params[:words].to_s
- terms = CGI.escape what
- url = WOLFRAM_API_SEARCH % {
- :terms => terms, :key => WOLFRAM_API_KEY
- }
- begin
- feed = @bot.httputil.get(url)
- raise unless feed
- rescue => e
- m.reply "error asking WolframAlfa about #{what}"
- return
- end
- debug feed
- xml = REXML::Document.new feed
- if xml.elements['/queryresult'].attributes['error'] == "true"
- m.reply xml.elements['/queryresult/error/text()'].to_s
- return
- end
- unless xml.elements['/queryresult'].attributes['success'] == "true"
- m.reply "no data available"
- return
- end
- answer_type, answer = [], []
- xml.elements.each("//pod") { |element|
- answer_type << element.attributes['title']
- answer << element.elements['subpod/plaintext'].text
- }
- # find the first answer that isn't nil,
- # starting on the second pod in the array
- n = 1
- answer[1..-1].each { |a|
- break unless a.nil?
- n += 1
- }
- if answer[n].nil?
- m.reply "no results"
- return
- end
- # strip spaces, pipes, and line breaks
- sep = Bold + ' :: ' + Bold
- chars = [ [/\n/, sep], [/\t/, " "], [/\s+/, " "], ["|", "-"] ]
- chars.each { |c| answer[n].gsub!(c[0], c[1]) }
- m.reply answer_type[n] + sep + answer[n]
- 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 "ddg *words", :action => 'duckduckgo', :threaded => true
- plugin.map "search *words", :action => 'google', :threaded => true
- plugin.map "google *words", :action => 'google', :threaded => true
- plugin.map "lucky *words", :action => 'lucky', :threaded => true
- plugin.map "gcalc *words", :action => 'gcalc', :threaded => true
- plugin.map "gdef *words", :action => 'gdef', :threaded => true
- plugin.map "wa *words", :action => 'wolfram', :threaded => true
- plugin.map "wp :lang *words", :action => 'wikipedia', :requirements => { :lang => /^\w\w\w?$/ }, :threaded => true
- plugin.map "wp *words", :action => 'wikipedia', :threaded => true
- plugin.map "unpedia *words", :action => 'unpedia', :threaded => true