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module Ri
def self.after_included
#using rdoc-2.3.0
require 'rdoc/ri/driver'
end
# @desc Wraps around ri to provide a menu when there are multiple matches.
# Enter * at menu prompt to view all matching methods.
def ri(original_query, regex=nil)
query = original_query.to_s
if query =~ /::|\#|\./
system_ri(query)
else
ri_driver = RDoc::RI::Driver.new(RDoc::RI::Driver.process_args([query]))
if ri_driver.class_cache.key?(query) && original_query.is_a?(Symbol)
ri_driver.display_class(query)
elsif ri_driver.class_cache.key?(query)
ri_driver.display_class(query)
if (class_cache = ri_driver.class_cache[query])
methods = []
class_methods = class_cache["class_methods"].map {|e| e["name"]}
instance_methods = class_cache["instance_methods"].map {|e| e["name"]}
if regex
class_methods = class_methods.grep(/#{regex}/)
instance_methods = instance_methods.grep(/#{regex}/)
end
all_methods = class_methods.each {|e| methods << {:name=>"#{query}.#{e}", :type=>:class}} +
instance_methods.each {|e| methods << {:name=>"#{query}.#{e}", :type=>:instance}}
menu(methods, :fields=>[:name, :type]) do |chosen|
system_ri(*chosen.map {|e| e[:name]})
end
end
else
results = ri_driver.select_methods(/#{query}/)
menu(results, :fields=>['full_name'], :ask=>false) do |chosen|
system_ri(*chosen.map {|e| e['full_name']})
end
end
end
nil
end
private
def system_ri(*queries)
::Hirb::View.capture_and_render { RDoc::RI::Driver.run(queries) }
rescue SystemExit
invalid_method = $!.message[/\S+\s*$/]
# retry query if invalid method detected
system_ri(*queries) if queries.delete(invalid_method) && !queries.empty?
end
end