Some methods to print pretty method lists

pretty-methods.rb

# Some methods to print pretty method lists



# The simple one is from Jason Vogel
# http://jasonvogel.blogspot.com/2007/01/ruby-code-snippet-methods-list.html

puts object.methods.sort.join("\n").to_s+"\n\n"





# This detailed one is from Conor Hunt
# http://snippets.dzone.com/posts/show/2916

    ANSI_BOLD       = "\033[1m"
    ANSI_RESET      = "\033[0m"
    ANSI_LGRAY    = "\033[0;37m"
    ANSI_GRAY     = "\033[1;30m"

    def pm(obj, *options) # Print methods
      methods = obj.methods
      methods -= Object.methods unless options.include? :more
      filter = options.select {|opt| opt.kind_of? Regexp}.first
      methods = methods.select {|name| name =~ filter} if filter

      data = methods.sort.collect do |name|
        method = obj.method(name)
        if method.arity == 0
          args = "()"
        elsif method.arity > 0
          n = method.arity
          args = "(#{(1..n).collect {|i| "arg#{i}"}.join(", ")})"
        elsif method.arity < 0
          n = -method.arity
          args = "(#{(1..n).collect {|i| "arg#{i}"}.join(", ")}, ...)"
        end
        klass = $1 if method.inspect =~ /Method: (.*?)#/
        [name, args, klass]
      end
      max_name = data.collect {|item| item[0].size}.max
      max_args = data.collect {|item| item[1].size}.max
      data.each do |item| 
        print " #{ANSI_BOLD}#{item[0].rjust(max_name)}#{ANSI_RESET}"
        print "#{ANSI_GRAY}#{item[1].ljust(max_args)}#{ANSI_RESET}"
        print "   #{ANSI_LGRAY}#{item[2]}#{ANSI_RESET}\n"
      end
      data.size
    end