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Size: 1.31 KB
Versions: 11
Compression:
Stored size: 1.31 KB
Contents
require 'cl/arg'
class Cl
class Args
include Enumerable
def define(const, name, *args)
opts = args.last.is_a?(Hash) ? args.pop.dup : {}
opts[:description] = args.shift if args.any?
arg = Arg.new(name, opts)
arg.define(const)
self.args << arg
end
def apply(cmd, values, opts)
return values if args.empty? || opts[:help]
values = splat(values) if splat?
validate(values)
args.zip(values).map { |(arg, value)| arg.set(cmd, value) }.flatten(1).compact
end
def each(&block)
args.each(&block)
end
def index(*args, &block)
self.args.index(*args, &block)
end
def args
@args ||= []
end
private
def validate(args)
raise ArgumentError.new(:missing_args, args.size, required) if args.size < required
raise ArgumentError.new(:too_many_args, args.size, allowed) if args.size > allowed && !splat?
end
def allowed
args.size
end
def splat?
any?(&:splat?)
end
def required
select(&:required?).size
end
def splat(values)
args.each.with_index.inject([]) do |group, (arg, ix)|
count = arg && arg.splat? ? [values.size - args.size + ix + 1] : []
group << values.shift(*count)
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems