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Contents
require 'optparse'
module Options
# Returns a list of options unknown to a particular options parser
# For example, if '-a' is a known option but '-b' and '-c' are not,
# unknown_options(parser, ['-a', '-b', '-c']) returns ['-b', '-c'].
# It also preserves arguments, so
# unknown_options(parser, ['-a', '-b', '-c', 'foo bar']) returns
# ['-b', '-c', 'foo bar'].
def self.unknown_options(parser, args)
unknown = []
recursive_parse = Proc.new do |arg_list|
begin
parser.parse!(arg_list)
rescue OptionParser::InvalidOption => e
unknown.concat(e.args)
while !arg_list.empty? && arg_list.first[0] != "-"
unknown << arg_list.shift
end
recursive_parse.call(arg_list)
end
end
recursive_parse.call(args.dup)
unknown
end
# Returns a list of options with unknown options removed
def self.known_options(parser, args)
unknown = unknown_options(parser, args)
args.reject { |arg| unknown.include?(arg) }
end
end
Version data entries
14 entries across 14 versions & 1 rubygems