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Contents?: true
Size: 1.54 KB
Versions: 23
Compression:
Stored size: 1.54 KB
Contents
module Rack::App::CLI::DefaultCommands::ListCommands
extend self
PRESERVED_KEYWORDS = %w[help routes irb].freeze
DEFAULT_COMMANDS = {
'routes' => Rack::App::CLI::DefaultCommands::ShowRoutes.description,
'help' => 'list all available command or describe a specific command',
'irb' => Rack::App::CLI::DefaultCommands::IRB.description
}.freeze
class Formatter
def initialize(known_commands)
@rjust = known_commands.keys.push(*PRESERVED_KEYWORDS).map(&:to_s).map(&:length).max + 3
end
def command_suggestion_line_by(name, desc)
[name.to_s.rjust(@rjust), desc].join(' ')
end
def format(collection_hash)
collection_hash.to_a.sort_by{ |k, v| k.to_s }.map do |name, desc|
command_suggestion_line_by(name, desc)
end.join("\n")
end
end
def get_message(known_commands)
collection = {}
add_default_suggestions(collection)
add_user_defined_commands(known_commands, collection)
[
header,
Formatter.new(known_commands).format(collection)
].join("\n")
end
protected
def header
cmd_file_name = File.basename($PROGRAM_NAME)
[
"Usage: #{cmd_file_name} <command> [options] <args>\n\n",
"Some useful #{cmd_file_name} commands are:"
].join("\n")
end
def add_default_suggestions(collection)
collection.merge!(DEFAULT_COMMANDS)
end
def add_user_defined_commands(known_commands, collection)
known_commands.sort_by { |name, _| name.to_s }.each do |name, command|
collection[name] = command.class.description
end
end
end
Version data entries
23 entries across 23 versions & 2 rubygems