move rbot into lib - still rearranging for packaging/installation

1 files changed, 427 insertions, 0 deletions

diff --git a/lib/rbot/keywords.rb b/lib/rbot/keywords.rb
new file mode 100644
index 00000000..3305af29
--- /dev/null
+++ b/lib/rbot/keywords.rb
@@ -0,0 +1,427 @@
+require 'pp'
+
+module Irc
+
+  # Keyword class
+  #
+  # Encapsulates a keyword ("foo is bar" is a keyword called foo, with type
+  # is, and has a single value of bar).
+  # Keywords can have multiple values, to_s() will choose one at random
+  class Keyword
+    
+    # type of keyword (e.g. "is" or "are")
+    attr_reader :type
+    
+    # type::   type of keyword (e.g "is" or "are")
+    # values:: array of values
+    # 
+    # create a keyword of type +type+ with values +values+
+    def initialize(type, values)
+      @type = type.downcase
+      @values = values
+    end
+
+    # pick a random value for this keyword and return it
+    def to_s
+      if(@values.length > 1)
+        Keyword.unescape(@values[rand(@values.length)])
+      else
+        Keyword.unescape(@values[0])
+      end
+    end
+
+    # describe the keyword (show all values without interpolation)
+    def desc
+      @values.join(" | ")
+    end
+
+    # return the keyword in a stringified form ready for storage
+    def dump
+      @type + "/" + Keyword.unescape(@values.join("<=or=>"))
+    end
+
+    # deserialize the stringified form to an object
+    def Keyword.restore(str)
+      if str =~ /^(\S+?)\/(.*)$/
+        type = $1
+        vals = $2.split("<=or=>")
+        return Keyword.new(type, vals)
+      end
+      return nil
+    end
+
+    # values:: array of values to add
+    # add values to a keyword
+    def <<(values)
+      if(@values.length > 1 || values.length > 1)
+        values.each {|v|
+          @values << v
+        }
+      else
+        @values[0] += " or " + values[0]
+      end
+    end
+
+    # unescape special words/characters in a keyword
+    def Keyword.unescape(str)
+      str.gsub(/\\\|/, "|").gsub(/ \\is /, " is ").gsub(/ \\are /, " are ").gsub(/\\\?(\s*)$/, "?\1")
+    end
+
+    # escape special words/characters in a keyword
+    def Keyword.escape(str)
+      str.gsub(/\|/, "\\|").gsub(/ is /, " \\is ").gsub(/ are /, " \\are ").gsub(/\?(\s*)$/, "\\?\1")
+    end
+  end
+
+  # keywords class. 
+  #
+  # Handles all that stuff like "bot: foo is bar", "bot: foo?"
+  #
+  # Fallback after core and auth have had a look at a message and refused to
+  # handle it, checks for a keyword command or lookup, otherwise the message
+  # is delegated to plugins
+  class Keywords
+    
+    # create a new Keywords instance, associated to bot +bot+
+    def initialize(bot)
+      @bot = bot
+      @statickeywords = Hash.new
+      upgrade_data
+      @keywords = DBTree.new bot, "keyword"
+
+      scan
+      
+      # import old format keywords into DBHash
+      if(File.exist?("#{@bot.botclass}/keywords.rbot"))
+        puts "auto importing old keywords.rbot"
+        IO.foreach("#{@bot.botclass}/keywords.rbot") do |line|
+          if(line =~ /^(.*?)\s*<=(is|are)?=?>\s*(.*)$/)
+            lhs = $1
+            mhs = $2
+            rhs = $3
+            mhs = "is" unless mhs
+            rhs = Keyword.escape rhs
+            values = rhs.split("<=or=>")
+            @keywords[lhs] = Keyword.new(mhs, values).dump
+          end
+        end
+        File.delete("#{@bot.botclass}/keywords.rbot")
+      end
+    end
+    
+    # drop static keywords and reload them from files, picking up any new
+    # keyword files that have been added
+    def rescan
+      @statickeywords = Hash.new
+      scan
+    end
+
+    # load static keywords from files, picking up any new keyword files that
+    # have been added
+    def scan
+      # first scan for old DBHash files, and convert them
+      Dir["#{@bot.botclass}/keywords/*"].each {|f|
+        next unless f =~ /\.db$/
+        puts "upgrading keyword db #{f} (rbot 0.9.5 or prior) database format"
+        newname = f.gsub(/\.db$/, ".kdb")
+        old = BDB::Hash.open f, nil, 
+                             "r+", 0600, "set_pagesize" => 1024,
+                             "set_cachesize" => [0, 32 * 1024, 0]
+        new = BDB::CIBtree.open newname, nil, 
+                                BDB::CREATE | BDB::EXCL | BDB::TRUNCATE,
+                                0600, "set_pagesize" => 1024,
+                                "set_cachesize" => [0, 32 * 1024, 0]
+        old.each {|k,v|
+          new[k] = v
+        }
+        old.close
+        new.close
+        File.delete(f)
+      }
+      
+      # then scan for current DBTree files, and load them
+      Dir["#{@bot.botclass}/keywords/*"].each {|f|
+        next unless f =~ /\.kdb$/
+        hsh = DBTree.new @bot, f, true
+        key = File.basename(f).gsub(/\.kdb$/, "")
+        debug "keywords module: loading DBTree file #{f}, key #{key}"
+        @statickeywords[key] = hsh
+      }
+      
+      # then scan for non DB files, and convert/import them and delete
+      Dir["#{@bot.botclass}/keywords/*"].each {|f|
+        next if f =~ /\.kdb$/
+        next if f =~ /CVS$/
+        puts "auto converting keywords from #{f}"
+        key = File.basename(f)
+        unless @statickeywords.has_key?(key)
+          @statickeywords[key] = DBHash.new @bot, "#{f}.db", true
+        end
+        IO.foreach(f) {|line|
+          if(line =~ /^(.*?)\s*<?=(is|are)?=?>\s*(.*)$/)
+            lhs = $1
+            mhs = $2
+            rhs = $3
+            # support infobot style factfiles, by fixing them up here
+            rhs.gsub!(/\$who/, "<who>")
+            mhs = "is" unless mhs
+            rhs = Keyword.escape rhs
+            values = rhs.split("<=or=>")
+            @statickeywords[key][lhs] = Keyword.new(mhs, values).dump
+          end
+        }
+        File.delete(f)
+        @statickeywords[key].flush
+      }
+    end
+
+    # upgrade data files found in old rbot formats to current
+    def upgrade_data
+      if File.exist?("#{@bot.botclass}/keywords.db")
+        puts "upgrading old keywords (rbot 0.9.5 or prior) database format"
+        old = BDB::Hash.open "#{@bot.botclass}/keywords.db", nil, 
+                             "r+", 0600, "set_pagesize" => 1024,
+                             "set_cachesize" => [0, 32 * 1024, 0]
+        new = BDB::CIBtree.open "#{@bot.botclass}/keyword.db", nil, 
+                                BDB::CREATE | BDB::EXCL | BDB::TRUNCATE,
+                                0600, "set_pagesize" => 1024,
+                                "set_cachesize" => [0, 32 * 1024, 0]
+        old.each {|k,v|
+          new[k] = v
+        }
+        old.close
+        new.close
+        File.delete("#{@bot.botclass}/keywords.db")
+      end
+    end
+
+    # save dynamic keywords to file
+    def save
+      @keywords.flush
+    end
+    def oldsave
+      File.open("#{@bot.botclass}/keywords.rbot", "w") do |file|
+        @keywords.each do |key, value|
+          file.puts "#{key}<=#{value.type}=>#{value.dump}"
+        end
+      end
+    end
+    
+    # lookup keyword +key+, return it or nil
+    def [](key)
+      debug "keywords module: looking up key #{key}"
+      if(@keywords.has_key?(key))
+        return Keyword.restore(@keywords[key])
+      else
+        # key name order for the lookup through these
+        @statickeywords.keys.sort.each {|k|
+          v = @statickeywords[k]
+          if v.has_key?(key)
+            return Keyword.restore(v[key])
+          end
+        }
+      end
+      return nil
+    end
+
+    # does +key+ exist as a keyword?
+    def has_key?(key)
+      if @keywords.has_key?(key) && Keyword.restore(@keywords[key]) != nil
+        return true
+      end
+      @statickeywords.each {|k,v|
+        if v.has_key?(key) && Keyword.restore(v[key]) != nil
+          return true
+        end
+      }
+      return false
+    end
+
+    # m::     PrivMessage containing message info
+    # key::   key being queried
+    # dunno:: optional, if true, reply "dunno" if +key+ not found
+    # 
+    # handle a message asking about a keyword
+    def keyword(m, key, dunno=true)
+       unless(kw = self[key])
+         m.reply @bot.lang.get("dunno") if (dunno)
+         return
+       end
+       response = kw.to_s
+       response.gsub!(/<who>/, m.sourcenick)
+       if(response =~ /^<reply>\s*(.*)/)
+         m.reply "#$1"
+       elsif(response =~ /^<action>\s*(.*)/)
+         @bot.action m.replyto, "#$1"
+       elsif(m.public? && response =~ /^<topic>\s*(.*)/)
+         topic = $1
+         @bot.topic m.target, topic
+       else
+         m.reply "#{key} #{kw.type} #{response}"
+       end
+    end
+
+    
+    # m::      PrivMessage containing message info
+    # target:: channel/nick to tell about the keyword
+    # key::    key being queried
+    # 
+    # handle a message asking the bot to tell someone about a keyword
+    def keyword_tell(m, target, key)
+      unless(kw = self[key])
+        @bot.say m.sourcenick, @bot.lang.get("dunno_about_X") % key
+        return
+      end
+      response = kw.to_s
+      response.gsub!(/<who>/, m.sourcenick)
+      if(response =~ /^<reply>\s*(.*)/)
+        @bot.say target, "#{m.sourcenick} wanted me to tell you: (#{key}) #$1"
+        m.reply "okay, I told #{target}: (#{key}) #$1"
+      elsif(response =~ /^<action>\s*(.*)/)
+        @bot.action target, "#$1 (#{m.sourcenick} wanted me to tell you)"
+        m.reply "okay, I told #{target}: * #$1"
+      else
+        @bot.say target, "#{m.sourcenick} wanted me to tell you that #{key} #{kw.type} #{response}"
+        m.reply "okay, I told #{target} that #{key} #{kw.type} #{response}"
+      end
+    end
+
+    # handle a message which alters a keyword
+    # like "foo is bar", or "no, foo is baz", or "foo is also qux"
+    def keyword_command(sourcenick, target, lhs, mhs, rhs, quiet=false)
+      debug "got keyword command #{lhs}, #{mhs}, #{rhs}"
+      overwrite = false
+      overwrite = true if(lhs.gsub!(/^no,\s*/, ""))
+      also = true if(rhs.gsub!(/^also\s+/, ""))
+      values = rhs.split(/\s+\|\s+/)
+      lhs = Keyword.unescape lhs
+      if(overwrite || also || !has_key?(lhs))
+        if(also && has_key?(lhs))
+          kw = self[lhs]
+          kw << values
+          @keywords[lhs] = kw.dump
+        else
+          @keywords[lhs] = Keyword.new(mhs, values).dump
+        end
+        @bot.okay target if !quiet
+      elsif(has_key?(lhs))
+        kw = self[lhs]
+        @bot.say target, "but #{lhs} #{kw.type} #{kw.desc}" if kw && !quiet
+      end
+    end
+
+    # return help string for Keywords with option topic +topic+
+    def help(topic="")
+      case topic
+        when "overview"
+          return "set: <keyword> is <definition>, overide: no, <keyword> is <definition>, add to definition: <keyword> is also <definition>, random responses: <keyword> is <definition> | <definition> [| ...], plurals: <keyword> are <definition>, escaping: \\is, \\are, \\|, specials: <reply>, <action>, <who>"
+        when "set"
+          return "set => <keyword> is <definition>"
+        when "plurals"
+          return "plurals => <keywords> are <definition>"
+        when "override"
+          return "overide => no, <keyword> is <definition>"
+        when "also"
+          return "also => <keyword> is also <definition>"
+        when "random"
+          return "random responses => <keyword> is <definition> | <definition> [| ...]"
+        when "get"
+          return "asking for keywords => (with addressing) \"<keyword>?\", (without addressing) \"'<keyword>\""
+        when "tell"
+          return "tell <nick> about <keyword> => if <keyword> is known, tell <nick>, via /msg, its definition"
+        when "forget"
+          return "forget <keyword> => forget fact <keyword>"
+        when "keywords"
+          return "keywords => show current keyword counts"
+        when "<reply>"
+          return "<reply> => normal response is \"<keyword> is <definition>\", but if <definition> begins with <reply>, the response will be \"<definition>\""
+        when "<action>"
+          return "<action> => makes keyword respnse \"/me <definition>\""
+        when "<who>"
+          return "<who> => replaced with questioner in reply"
+        when "<topic>"
+          return "<topic> => respond by setting the topic to the rest of the definition"
+        when "search"
+          return "keywords search [--all] [--full] <regexp> => search keywords for <regexp>. If --all is set, search static keywords too, if --full is set, search definitions too."
+        else
+          return "Keyword module (Fact learning and regurgitation) topics: overview, set, plurals, override, also, random, get, tell, forget, keywords, keywords search, <reply>, <action>, <who>, <topic>"
+      end
+    end
+
+    # privmsg handler
+    def privmsg(m)
+      return if m.replied?
+      if(m.address?)
+        if(!(m.message =~ /\\\?\s*$/) && m.message =~ /^(.*\S)\s*\?\s*$/)
+          keyword m, $1 if(@bot.auth.allow?("keyword", m.source, m.replyto))
+        elsif(m.message =~ /^(.*?)\s+(is|are)\s+(.*)$/)
+          keyword_command(m.sourcenick, m.replyto, $1, $2, $3) if(@bot.auth.allow?("keycmd", m.source, m.replyto))
+        elsif (m.message =~ /^tell\s+(\S+)\s+about\s+(.+)$/)
+          keyword_tell(m, $1, $2) if(@bot.auth.allow?("keyword", m.source, m.replyto))
+        elsif (m.message =~ /^forget\s+(.*)$/)
+          key = $1
+          if((@bot.auth.allow?("keycmd", m.source, m.replyto)) && @keywords.has_key?(key))
+            @keywords.delete(key)
+            @bot.okay m.replyto
+          end
+        elsif (m.message =~ /^keywords$/)
+          if(@bot.auth.allow?("keyword", m.source, m.replyto))
+            length = 0
+            @statickeywords.each {|k,v|
+              length += v.length
+            }
+            m.reply "There are currently #{@keywords.length} keywords, #{length} static facts defined."
+          end
+        elsif (m.message =~ /^keywords search\s+(.*)$/)
+          str = $1
+          all = false
+          all = true if str.gsub!(/--all\s+/, "")
+          full = false
+          full = true if str.gsub!(/--full\s+/, "")
+
+          re = Regexp.new(str, Regexp::IGNORECASE)
+          if(@bot.auth.allow?("keyword", m.source, m.replyto))
+            matches = Array.new
+            @keywords.each {|k,v|
+              kw = Keyword.restore(v)
+              if re.match(k) || (full && re.match(kw.desc))
+                matches << [k,kw]
+              end
+            }
+            if all
+              @statickeywords.each {|k,v|
+                v.each {|kk,vv|
+                  kw = Keyword.restore(vv)
+                  if re.match(kk) || (full && re.match(kw.desc))
+                    matches << [kk,kw]
+                  end
+                }
+              }
+            end
+            if matches.length == 1
+              rkw = matches[0]
+              m.reply "#{rkw[0]} #{rkw[1].type} #{rkw[1].desc}"
+            elsif matches.length > 0
+              i = 0
+              matches.each {|rkw|
+                m.reply "[#{i+1}/#{matches.length}] #{rkw[0]} #{rkw[1].type} #{rkw[1].desc}"
+                i += 1
+                break if i == 3
+              }
+            else
+              m.reply "no keywords match #{str}"
+            end
+          end
+        end
+      else
+        # in channel message, not to me
+        if(m.message =~ /^'(.*)$/ || (!@bot.config["keyword.noaddress"] && m.message =~ /^(.*\S)\s*\?\s*$/))
+          keyword m, $1, false if(@bot.auth.allow?("keyword", m.source))
+        elsif(@bot.config["keyword.listen"] == true && (m.message =~ /^(.*?)\s+(is|are)\s+(.*)$/))
+          # TODO MUCH more selective on what's allowed here
+          keyword_command(m.sourcenick, m.replyto, $1, $2, $3, true) if(@bot.auth.allow?("keycmd", m.source))
+        end
+      end
+    end
+  end
+end