ruby/lib/irb/command/show_doc.rb
Stan Lo f5801e2bf4 [ruby/irb] Standardize command related names
(https://github.com/ruby/irb/pull/873)

* Replace ExtendCommand with Command and standardize command related names

1. Rename lib/irb/extend-command.rb to lib/irb/command.rb
2. Rename lib/irb/cmd/*.rb to lib/irb/command/*.rb
3. Rename test/irb/test_cmd.rb to test/irb/test_command.rb
4. Rename ExtendCommand to Command

* Alias ExtendCommand to Command and deprecate it

* Rename Command::Nop to Command::Base

* Not deprecate old constants just yet

* Add lib/irb/cmd/nop.rb back

462c1284af
2024-02-16 16:47:36 +00:00

46 lines
1.1 KiB
Ruby

# frozen_string_literal: true
module IRB
module Command
class ShowDoc < Base
class << self
def transform_args(args)
# Return a string literal as is for backward compatibility
if args.empty? || string_literal?(args)
args
else # Otherwise, consider the input as a String for convenience
args.strip.dump
end
end
end
category "Context"
description "Enter the mode to look up RI documents."
def execute(*names)
require 'rdoc/ri/driver'
unless ShowDoc.const_defined?(:Ri)
opts = RDoc::RI::Driver.process_args([])
ShowDoc.const_set(:Ri, RDoc::RI::Driver.new(opts))
end
if names.empty?
Ri.interactive
else
names.each do |name|
begin
Ri.display_name(name.to_s)
rescue RDoc::RI::Error
puts $!.message
end
end
end
nil
rescue LoadError, SystemExit
warn "Can't display document because `rdoc` is not installed."
end
end
end
end