зеркало из https://github.com/github/ruby.git
1680 строки
44 KiB
Ruby
1680 строки
44 KiB
Ruby
# optparse library, not octopus.
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=begin
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= Summary
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Library for command line option analysis.
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features:
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(1) It is possible <option switch of a short form and a long form> to
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exist together. It is also possible in one to bring the switch of
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a short form together.
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(2) It is possible to write bringing specification and the handler of
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the switch together respectively in one place.
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(3) The argument of the switch is converted into the class which
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automatically specifies it.
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(4) The option summary can be made.
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(5) The option can be added on the way later.
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=end #'#"#`#
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# Not yet (;_;)
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=begin
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== Class tree
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* ((<OptionParser>)) front end
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* ((<OptionParser::Switch>)) each switches
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* ((<OptionParser::List>)) options list
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* ((<OptionParser::ParseError>)) errors on parsing
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* ((<OptionParser::AmbiguousOption>))
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* ((<OptionParser::NeedlessArgument>))
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* ((<OptionParser::MissingArgument>))
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* ((<OptionParser::InvalidOption>))
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* ((<OptionParser::InvalidArgument>))
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* ((<OptionParser::AmbiguousArgument>))
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== Object relations
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+--------------+
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| OptionParser |<>-----+
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+--------------+ | +--------+
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| ,-| Switch |
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on_head -------->+---------------+ / +--------+
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accept/reject -->| List |<|>-
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| |<|>- +----------+
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on ------------->+---------------+ `-| argument |
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: : | class |
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+---------------+ |==========|
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on_tail -------->| | |pattern |
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+---------------+ |----------|
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OptionParser.accept ->| DefaultList | |converter |
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reject |(shared between| +----------+
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| all instances)|
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+---------------+
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=end #'#"#`#
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=begin
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= Classes & Modules
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=end #'#"#`#
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class OptionParser
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RCSID = %w$Id$[1..-1].each {|s| s.freeze}.freeze
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Version = (RCSID[1].split('.').collect {|s| s.to_i}.extend(Comparable).freeze if RCSID[1])
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LastModified = (Time.gm(*RCSID[2, 2].join('-').scan(/\d+/).collect {|s| s.to_i}) if RCSID[2])
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Release = RCSID[2]
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NoArgument = [NO_ARGUMENT = :NONE, nil].freeze
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RequiredArgument = [REQUIRED_ARGUMENT = :REQUIRED, true].freeze
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OptionalArgument = [OPTIONAL_ARGUMENT = :OPTIONAL, false].freeze
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=begin private
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== ((:OptionParser::Completion:))
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Keyword completion module.
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=end #'#"#`#
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module Completion
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=begin private
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--- OptionParser::Completion#complete(key[, pat])
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Searches ((|key|)), or ((|pat|)) with completion if not found.
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:Parameters:
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: ((|key|))
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keyword to search.
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: ((|pat|))
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completion pattern.
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=end #'#"#`#
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def complete(key, pat = nil)
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pat ||= Regexp.new('\A' + Regexp.quote(key).gsub(/\w+(?=.)/, '\&\w*'), true)
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canon, sw, k, v = nil
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each do |k, *v|
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(if Regexp === k
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k === key
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else
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pat === (defined?(k.id2name) ? k.id2name : k)
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end) or next
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v << k if v.empty?
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unless canon
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canon, sw = k, v
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else
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throw :ambiguous, key unless sw == v
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end
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end
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if canon
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block_given? or return key, *sw
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yield(key, *sw)
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end
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end
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=begin private
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--- OptionParser::Completion#convert(opt, *val)
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Extracts the first element from result of
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((<OptionParser::Completion#complete>)).
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=end #'#"#`#
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def convert(opt = nil, val = nil, *)
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val
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end
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end
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=begin private
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== ((:OptionParser::OptionMap:))
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Map from option/keyword string to object with completion.
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=== Superclass
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(({Hash}))
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=== Including modules
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((<OptionParser::Completion>))
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=end #'#"#`#
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class OptionMap < Hash
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include Completion
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end
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=begin
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== ((:OptionParser::Switch:))
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Individual switch class.
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=end #'#"#`#
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class Switch
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attr_reader :pattern, :conv, :short, :long, :arg, :desc, :block
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=begin private
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=== Class methods
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=end
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=begin private
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--- OptionParser::Switch.guess(arg)
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Guesses argument style from ((|arg|)).
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Returns corresponding ((<OptionParser::Switch>)) subclass.
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=end #'#"#`#
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def self.guess(arg)
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case arg
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when ""
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t = self
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when /\A=?\[/
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t = Switch::OptionalArgument
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when /\A\s+\[/
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t = Switch::PlacedArgument
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else
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t = Switch::RequiredArgument
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end
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self >= t or incompatible_argument_styles(arg, t)
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t
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end
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def self.incompatible_argument_styles(arg, t)
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raise ArgumentError, "#{arg}: incompatible argument styles\n #{self}, #{t}"
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end
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def self.pattern
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NilClass
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end
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=begin private
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--- OptionParser::Switch.new
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=end #'#"#`#
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def initialize(pattern = nil, conv = nil,
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short = nil, long = nil, arg = nil,
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desc = ([] if short or long), block = Proc.new)
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@pattern, @conv, @short, @long, @arg, @desc, @block =
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pattern, conv, short, long, arg, desc, block
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end
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=begin
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=== Instance methods
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=end
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=begin private
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--- OptionParser::Switch#parse_arg(arg) {non-serious error handler}
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Parses argument and returns rest of ((|arg|)), and matched portion
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to the argument pattern.
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:Parameters:
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: ((|arg|))
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option argument to be parsed.
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: (({block}))
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yields when the pattern doesn't match sub-string.
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=end #'#"#`#
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def parse_arg(arg)
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pattern or return nil, arg
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unless m = pattern.match(arg)
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yield(InvalidArgument, arg)
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return arg, nil
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end
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if String === m
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m = [s = m]
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else
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m = m.to_a
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s = m[0]
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return nil, m unless String === s
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end
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raise InvalidArgument, arg unless arg.rindex(s, 0)
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return nil, m if s.length == arg.length
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yield(InvalidArgument, arg) # didn't match whole arg
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return arg[s.length..-1], m
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end
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private :parse_arg
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=begin private
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--- OptionParser::Switch#conv_arg(arg, val) {semi-error handler}
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Parses argument, convert and returns ((|arg|)), ((|block|)) and
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result of conversion.
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: Arguments to ((|@conv|))
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substrings matched to ((|@pattern|)), ((|$&|)), ((|$1|)),
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((|$2|)) and so on.
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:Parameters:
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: ((|arg|))
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argument string follows the switch.
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: ((|val|))
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following argument.
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: (({block}))
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(({yields})) at semi-error condition, instead of raises exception.
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=end #'#"#`#
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def conv_arg(arg, val = nil)
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if block
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if conv
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val = conv.call(*val)
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else
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val = *val
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end
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return arg, block, val
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else
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return arg, nil
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end
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end
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private :conv_arg
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=begin private
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--- OptionParser::Switch#summarize(sdone, ldone, width, max, indent)
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Makes summary strings.
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:Parameters:
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: ((|sdone|))
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already summarized short style options keyed hash.
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: ((|ldone|))
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already summarized long style options keyed hash.
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: ((|width|))
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width of left side, option part. in other word, right side,
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description part strings start at ((|width|)) column.
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: ((|max|))
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maximum width of left side, options are filled within ((|max|)) columns.
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: ((|indent|))
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prefix string indents each summarized lines.
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: (({block}))
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to be passed each lines(without newline).
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=end #'#"#`#
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def summarize(sdone = [], ldone = [], width = 1, max = width - 1, indent = "")
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sopts, lopts, s = [], [], nil
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@short.each {|s| sdone.fetch(s) {sopts << s}; sdone[s] = true} if @short
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@long.each {|s| ldone.fetch(s) {lopts << s}; ldone[s] = true} if @long
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return if sopts.empty? and lopts.empty? # completely hidden
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left = [sopts.join(', ')]
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right = desc.dup
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while s = lopts.shift
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l = left[-1].length + s.length
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l += arg.length if left.size == 1 && arg
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l < max or left << ''
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left[-1] << if left[-1].empty? then ' ' * 4 else ', ' end << s
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end
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left[0] << arg if arg
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mlen = left.collect {|s| s.length}.max.to_i
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while mlen > width and l = left.shift
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mlen = left.collect {|s| s.length}.max.to_i if l.length == mlen
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yield(indent + l)
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end
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while (l = left.shift; r = right.shift; l or r)
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l = l.to_s.ljust(width) + ' ' + r if r and !r.empty?
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yield(indent + l)
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end
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self
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end
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=begin private
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== Switch classes
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=end #'#"#`#
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=begin private
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=== ((:OptionParser::Switch::NoArgument:))
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Switch that takes no arguments.
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==== Superclass
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((<OptionParser::Switch>))
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==== Instance methods
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--- OptionParser::Switch::NoArgument#parse
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Raises an exception if any arguments given.
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=end #'#"#`#
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class NoArgument < self
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def parse(arg, argv, &error)
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yield(NeedlessArgument, arg) if arg
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conv_arg(arg)
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end
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def self.incompatible_argument_styles(*)
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end
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def self.pattern
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Object
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end
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end
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=begin private
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=== ((:OptionParser::Switch::RequiredArgument:))
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Switch that takes an argument.
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==== Superclass
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((<OptionParser::Switch>))
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==== Instance methods
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--- OptionParser::Switch::RequiredArgument#parse
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Raises an exception if argument is not present.
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=end #'#"#`#
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class RequiredArgument < self
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def parse(arg, argv, &error)
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unless arg
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raise MissingArgument if argv.empty?
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arg = argv.shift
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end
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conv_arg(*parse_arg(arg, &error))
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end
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end
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=begin private
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=== ((:OptionParser::Switch::OptionalArgument:))
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Switch that can omit argument.
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==== Superclass
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((<OptionParser::Switch>))
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==== Instance methods
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--- OptionParser::Switch::OptionalArgument#parse
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Parses argument if given, or uses default value.
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=end #'#"#`#
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class OptionalArgument < self
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def parse(arg, argv, &error)
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if arg
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conv_arg(*parse_arg(arg, &error))
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else
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conv_arg(arg)
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end
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end
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end
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class PlacedArgument < self
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def parse(arg, argv, &error)
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if !(val = arg) and (argv.empty? or /\A-/ =~ (val = argv[0]))
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return nil, block, nil
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end
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opt = (val = parse_arg(val, &error))[1]
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val = conv_arg(*val)
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if opt
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argv.shift
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else
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val[0] = nil
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end
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val
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end
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end
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end
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=begin
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== ((:OptionParser::List:))
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Simple option list providing mapping from short and/or long option
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string to ((<OptionParser::Switch>)), and mapping from acceptable
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argument to matching pattern and converter pair. Also provides
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summary feature.
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=end #'#"#`#
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class List
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=begin
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=== Class methods
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=end #'#"#`#
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=begin private
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--- OptionParser::List.new
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Just initializes all instance variables.
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=end #'#"#`#
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def initialize
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@atype = {}
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@short = OptionMap.new
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@long = OptionMap.new
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@list = []
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end
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=begin
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=== Instance methods
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=end #'#"#`#
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=begin
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--- OptionParser::List#atype
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Map from acceptable argument types to pattern and converter pairs.
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--- OptionParser::List#short
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Map from short style option switches to actual switch objects.
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--- OptionParser::List#long
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Map from long style option switches to actual switch objects.
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--- OptionParser::List#list
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List of all switches and summary string.
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=end #'#"#`#
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attr_reader :atype, :short, :long, :list
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=begin private
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--- OptionParser::List#accept(type[, pattern]) {...}
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see ((<OptionParser.accept>)).
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--- OptionParser::List#reject(type)
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see ((<OptionParser.reject>)).
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=end #'#"#`#
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def accept(t, pat = /.*/, &block)
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if pat
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pat.respond_to?(:match) or raise TypeError, "has no `match'"
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else
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pat = t if t.respond_to?(:match)
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end
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unless block
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block = pat.method(:convert).to_proc if pat.respond_to?(:convert)
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end
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@atype[t] = [pat, block]
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end
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def reject(t)
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@atype.delete(t)
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end
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=begin private
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--- OptionParser::List#update(sw, sopts, lopts, nlopts = nil)
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Adds ((|sw|)) according to ((|sopts|)), ((|lopts|)) and
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((|nlopts|)).
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:Parameters:
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: ((|sw|))
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((<OptionParser::Switch>)) instance to be added.
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: ((|sopts|))
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short style options list.
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: ((|lopts|))
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long style options list.
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: ((|nlopts|))
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negated long style options list.
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=end #'#"#`#
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def update(sw, sopts, lopts, nsw = nil, nlopts = nil)
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o = nil
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sopts.each {|o| @short[o] = sw} if sopts
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lopts.each {|o| @long[o] = sw} if lopts
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nlopts.each {|o| @long[o] = nsw} if nsw and nlopts
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used = @short.invert.update(@long.invert)
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@list.delete_if {|o| Switch === o and !used[o]}
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end
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private :update
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=begin
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--- OptionParser::List#prepend(switch, short_opts, long_opts, nolong_opts)
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Inserts ((|switch|)) at head of the list, and associates short,
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long and negated long options.
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--- OptionParser::List#append(switch, short_opts, long_opts, nolong_opts)
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Appends ((|switch|)) at tail of the list, and associates short,
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long and negated long options.
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:Parameters:
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: ((|switch|))
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((<OptionParser::Switch>)) instance to be inserted.
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: ((|short_opts|))
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list of short style options.
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: ((|long_opts|))
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list of long style options.
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: ((|nolong_opts|))
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list of long style options with (({"no-"})) prefix.
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=end #'#"#`#
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def prepend(*args)
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update(*args)
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@list.unshift(args[0])
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end
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def append(*args)
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update(*args)
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@list.push(args[0])
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end
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=begin
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--- OptionParser::List#search(id, key) [{block}]
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Searches ((|key|)) in ((|id|)) list.
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:Parameters:
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: ((|id|))
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searching list.
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: ((|k|))
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searching key.
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: (({block}))
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yielded with the found value when succeeded.
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=end #'#"#`#
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def search(id, key)
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if list = __send__(id)
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val = list.fetch(key) {return nil}
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return val unless block_given?
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yield(val)
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end
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end
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=begin
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--- OptionParser::List#complete(id, opt, *pat, &block)
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Searches list ((|id|)) for ((|opt|)) and ((|*pat|)).
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:Parameters:
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: ((|id|))
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searching list.
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: ((|opt|))
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searching key.
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: ((|*pat|))
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optional pattern for completion.
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: (({block}))
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yielded with the found value when succeeded.
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=end #'#"#`#
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def complete(id, opt, *pat, &block)
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__send__(id).complete(opt, *pat, &block)
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end
|
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||
=begin
|
||
--- OptionParser::List#summarize(*args) {...}
|
||
Making summary table, yields the (({block})) with each lines.
|
||
Each elements of (({@list})) should be able to (({summarize})).
|
||
:Parameters:
|
||
: ((|args|))
|
||
passed to elements#summarize through.
|
||
: (({block}))
|
||
to be passed each lines(without newline).
|
||
=end #'#"#`#
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||
def summarize(*args, &block)
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||
list.each do |opt|
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||
if opt.respond_to?(:summarize) # perhaps OptionParser::Switch
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opt.summarize(*args, &block)
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||
elsif opt.empty?
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yield("")
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else
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||
opt.each(&block)
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||
end
|
||
end
|
||
end
|
||
end
|
||
|
||
|
||
=begin private
|
||
== ((:OptionParser::CompletingHash:))
|
||
(({Hash})) with completion search feature.
|
||
=== Superclass
|
||
(({Hash}))
|
||
=== Including modules
|
||
((<OptionParser::Completion>))
|
||
=end #'#"#`#
|
||
class CompletingHash < Hash
|
||
include Completion
|
||
|
||
=begin private
|
||
=== Instance methods
|
||
--- OptionParser::CompletingHash#match(key)
|
||
Completion for hash key.
|
||
=end #'#"#`#
|
||
def match(key)
|
||
return key, *fetch(key) {
|
||
raise AmbiguousArgument, catch(:ambiguous) {return complete(key)}
|
||
}.to_a
|
||
end
|
||
end
|
||
|
||
|
||
=begin
|
||
== ((:OptionParser:))
|
||
The front-end of (({OptionParser})).
|
||
=end #'#"#`#
|
||
|
||
=begin
|
||
=== Constants
|
||
=end #'#"#`#
|
||
|
||
=begin
|
||
--- OptionParser::ArgumentStyle
|
||
Enumeration of acceptable argument styles; possible values are:
|
||
: OptionParser::NO_ARGUMENT
|
||
the switch takes no arguments. ((({:NONE})))
|
||
: OptionParser::REQUIRED_ARGUMENT
|
||
the switch requires an argument. ((({:REQUIRED})))
|
||
: OptionParser::OPTIONAL_ARGUMENT
|
||
the switch requires an optional argument, that is, may take or
|
||
not. ((({:OPTIONAL})))
|
||
|
||
Use like (({--switch=argument}))(long style) or
|
||
(({-Xargument}))(short style). For short style, only portion
|
||
matched to ((<argument pattern>)) is dealed as argument.
|
||
=end #'#"#`#
|
||
ArgumentStyle = {}
|
||
NoArgument.each {|el| ArgumentStyle[el] = Switch::NoArgument}
|
||
RequiredArgument.each {|el| ArgumentStyle[el] = Switch::RequiredArgument}
|
||
OptionalArgument.each {|el| ArgumentStyle[el] = Switch::OptionalArgument}
|
||
ArgumentStyle.freeze
|
||
|
||
=begin private
|
||
--- OptionParser::DefaultList
|
||
Switches common used such as '--', and also provides default
|
||
argument classes
|
||
=end #'#"#`#
|
||
DefaultList = List.new
|
||
DefaultList.short['-'] = Switch::NoArgument.new {}
|
||
DefaultList.long[''] = Switch::NoArgument.new {throw :terminate}
|
||
|
||
=begin undocumented
|
||
=== Default options
|
||
Default options, which never appear in option summary.
|
||
--- --help
|
||
Shows option summary.
|
||
--- --version
|
||
Shows version string if (({::Version})) is defined.
|
||
=end #'#"#`#
|
||
DefaultList.long['help'] = Switch::NoArgument.new do
|
||
puts ARGV.options
|
||
exit
|
||
end
|
||
DefaultList.long['version'] = Switch::OptionalArgument.new do |pkg|
|
||
if pkg
|
||
begin
|
||
require 'optparse/version'
|
||
rescue LoadError
|
||
pkg = nil
|
||
else
|
||
show_version(*pkg.split(/,/))
|
||
end
|
||
end
|
||
unless pkg
|
||
v = ARGV.options.ver and puts v
|
||
end
|
||
exit
|
||
end
|
||
|
||
=begin
|
||
=== Class methods
|
||
=end #'#"#`#
|
||
|
||
=begin
|
||
--- OptionParser.with([banner[, width[, indent]]]) [{...}]
|
||
Initializes new instance, and evaluates the block in context of
|
||
the instance if called as iterator. This behavior is equivalent
|
||
to older (({new})). This is ((*deprecated*)) method.
|
||
|
||
cf. ((<OptionParser.new>))
|
||
:Parameters:
|
||
: ((|banner|))
|
||
banner message.
|
||
: ((|width|))
|
||
summary width.
|
||
: ((|indent|))
|
||
summary indent.
|
||
: (({block}))
|
||
to be evaluated in the new instance context.
|
||
=end #'#"#`#
|
||
def self.with(*args, &block)
|
||
opts = new(*args)
|
||
opts.instance_eval(&block)
|
||
opts
|
||
end
|
||
|
||
=begin
|
||
--- OptionParser.inc(arg[, default])
|
||
--- OptionParser#inc(arg[, default])
|
||
Returns incremented value of ((|default|)) according to ((|arg|)).
|
||
=end
|
||
def self.inc(arg, default = nil)
|
||
case arg
|
||
when Integer
|
||
arg.nonzero?
|
||
when nil
|
||
default.to_i + 1
|
||
end
|
||
end
|
||
def inc(*args)
|
||
self.class.inc(*args)
|
||
end
|
||
|
||
=begin
|
||
--- OptionParser.new([banner[, width[, indent]]]) [{...}]
|
||
Initializes the instance, and yields itself if called as iterator.
|
||
:Parameters:
|
||
: ((|banner|))
|
||
banner message.
|
||
: ((|width|))
|
||
summary width.
|
||
: ((|indent|))
|
||
summary indent.
|
||
: (({block}))
|
||
to be evaluated in the new instance context.
|
||
=end #'#"#`#
|
||
def initialize(banner = nil, width = 32, indent = ' ' * 4)
|
||
@stack = [DefaultList, List.new, List.new]
|
||
@program_name = nil
|
||
@banner = banner
|
||
@summary_width = width
|
||
@summary_indent = indent
|
||
yield self if block_given?
|
||
end
|
||
|
||
=begin
|
||
--- OptionParser.terminate([arg])
|
||
Terminates option parsing. Optional parameter ((|arg|)) would be
|
||
pushed back if given.
|
||
:Parameters:
|
||
: ((|arg|))
|
||
string pushed back to be first non-option argument
|
||
=end #'#"#`#
|
||
def terminate(arg = nil)
|
||
self.class.terminate(arg)
|
||
end
|
||
def self.terminate(arg = nil)
|
||
throw :terminate, arg
|
||
end
|
||
|
||
@stack = [DefaultList]
|
||
def self.top() DefaultList end
|
||
|
||
=begin
|
||
--- OptionParser.accept(t, [pat]) {...}
|
||
--- OptionParser#accept(t, [pat]) {...}
|
||
Directs to accept specified class argument.
|
||
:Parameters:
|
||
: ((|t|))
|
||
argument class specifier, any object including Class.
|
||
: ((|pat|))
|
||
pattern for argument, defaulted to ((|t|)) if it respond to (({match})).
|
||
: (({block}))
|
||
receives argument string and should be convert to desired class.
|
||
=end #'#"#`#
|
||
def accept(*args, &blk) top.accept(*args, &blk) end
|
||
def self.accept(*args, &blk) top.accept(*args, &blk) end
|
||
|
||
=begin
|
||
--- OptionParser.reject(t)
|
||
--- OptionParser#reject(t)
|
||
Directs to reject specified class argument.
|
||
:Parameters:
|
||
: ((|t|))
|
||
argument class specifier, any object including Class.
|
||
=end #'#"#`#
|
||
def reject(*args, &blk) top.reject(*args, &blk) end
|
||
def self.reject(*args, &blk) top.reject(*args, &blk) end
|
||
|
||
|
||
=begin
|
||
=== Instance methods
|
||
=end #'#"#`#
|
||
|
||
=begin
|
||
--- OptionParser#banner
|
||
--- OptionParser#banner=(heading)
|
||
Heading banner preceding summary.
|
||
--- OptionParser#summary_width
|
||
--- OptionParser#summary_width=(width)
|
||
Width for option list portion of summary. Must be (({Numeric})).
|
||
--- OptionParser#summary_indent
|
||
--- OptionParser#summary_indent=(indent)
|
||
Indentation for summary. Must be (({String})) (or have (({+ String}))).
|
||
--- OptionParser#program_name
|
||
--- OptionParser#program_name=(name)
|
||
Program name to be emitted in error message and default banner,
|
||
defaulted to (({$0})).
|
||
=end #'#"#`#
|
||
attr_writer :banner, :program_name
|
||
attr_accessor :summary_width, :summary_indent
|
||
|
||
def banner
|
||
@banner ||= "Usage: #{program_name} [options]"
|
||
end
|
||
|
||
def program_name
|
||
@program_name || File.basename($0, '.*')
|
||
end
|
||
|
||
# for experimental cascading :-)
|
||
alias set_banner banner=
|
||
alias set_program_name program_name=
|
||
alias set_summary_width summary_width=
|
||
alias set_summary_indent summary_indent=
|
||
|
||
=begin
|
||
--- OptionParser#version
|
||
--- OptionParser#version=(ver)
|
||
Version.
|
||
--- OptionParser#release
|
||
--- OptionParser#release=(rel)
|
||
Release code.
|
||
--- OptionParser#ver
|
||
Returns version string from ((<program_name>)), (({version})) and
|
||
(({release})).
|
||
=end #'#"#`#
|
||
attr_writer :version, :release
|
||
|
||
def version
|
||
@version || (defined?(::Version) && ::Version) || (defined?(::VERSION) && ::VERSION)
|
||
end
|
||
|
||
def release
|
||
@release || (defined?(::Release) && ::Release) || (defined?(::RELEASE) && ::RELEASE)
|
||
end
|
||
|
||
def ver
|
||
if v = version
|
||
str = "#{program_name} #{[v].join('.')}"
|
||
str << " (#{v})" if v = release
|
||
str
|
||
end
|
||
end
|
||
|
||
def warn(mesg = $!)
|
||
super(program_name + ': ' + mesg)
|
||
end
|
||
|
||
def abort(mesg = $!)
|
||
super(program_name + ': ' + mesg)
|
||
end
|
||
|
||
=begin
|
||
--- OptionParser#top
|
||
Subject of ((<on>))/((<on_head>)), ((<accept>))/((<reject>)).
|
||
=end #'#"#`#
|
||
def top
|
||
@stack[-1]
|
||
end
|
||
|
||
=begin
|
||
--- OptionParser#base
|
||
Subject of ((<on_tail>)).
|
||
=end #'#"#`#
|
||
def base
|
||
@stack[1]
|
||
end
|
||
|
||
=begin
|
||
--- OptionParser#new
|
||
Pushes a new (({List})).
|
||
=end #'#"#`#
|
||
def new
|
||
@stack.push(List.new)
|
||
if block_given?
|
||
yield self
|
||
else
|
||
self
|
||
end
|
||
end
|
||
|
||
=begin
|
||
--- OptionParser#remove
|
||
Removes the last (({List})).
|
||
=end #'#"#`#
|
||
def remove
|
||
@stack.pop
|
||
end
|
||
|
||
|
||
=begin
|
||
--- OptionParser#summarize(to = [], width = @summary_width, max = width - 1, indent = @summary_indent)
|
||
Puts option summary into ((|to|)), and returns ((|to|)).
|
||
:Parameters:
|
||
: ((|to|))
|
||
output destination, which must have method ((|<<|)). Defaulted to (({[]})).
|
||
: ((|width|))
|
||
width of left side. Defaulted to ((|@summary_width|))
|
||
: ((|max|))
|
||
maximum length allowed for left side. Defaulted to (({((|width|)) - 1}))
|
||
: ((|indent|))
|
||
indentation. Defaulted to ((|@summary_indent|))
|
||
: (({block}))
|
||
yields with each line if called as iterator.
|
||
=end #'#"#`#
|
||
def summarize(to = [], width = @summary_width, max = width - 1, indent = @summary_indent, &blk)
|
||
visit(:summarize, {}, {}, width, max, indent, &(blk || proc {|l| to << l + $/}))
|
||
to
|
||
end
|
||
|
||
=begin
|
||
--- OptionParser#help
|
||
--- OptionParser#to_s
|
||
Returns option summary string.
|
||
=end #'#"#`#
|
||
def help; summarize(banner.to_s.sub(/\n?\z/, "\n")) end
|
||
alias to_s help
|
||
|
||
=begin
|
||
--- OptionParser#to_a
|
||
Returns option summary list.
|
||
=end #'#"#`#
|
||
def to_a; summarize(banner.to_a.dup) end
|
||
|
||
|
||
=begin
|
||
--- OptionParser#switch
|
||
Creates ((<OptionParser::Switch>)).
|
||
:Parameters:
|
||
: ((|*opts|))
|
||
option definition:
|
||
: argument style
|
||
see ((<OptionParser::ArgumentStyle>))
|
||
: argument pattern
|
||
acceptable option argument format, must pre-defined with
|
||
((<OptionParser.accept>)) or ((<OptionParser#accept>)), or
|
||
(({Regexp})). This can appear once or assigned as (({String}))
|
||
if not present, otherwise causes exception (({ArgumentError})).
|
||
|
||
cf. ((<Acceptable argument classes>)).
|
||
: Hash
|
||
: Array
|
||
possible argument values.
|
||
: Proc
|
||
: Method
|
||
alternative way to give the ((*handler*)).
|
||
: "--switch=MANDATORY", "--switch[=OPTIONAL]", "--switch"
|
||
specifies long style switch that takes ((*mandatory*)),
|
||
((*optional*)) and ((*no*)) argument, respectively.
|
||
: "-xMANDATORY", "-x[OPTIONAL]", "-x"
|
||
specifies short style switch that takes ((*mandatory*)),
|
||
((*optional*)) and ((*no*)) argument, respectively.
|
||
: "-[a-z]MANDATORY", "-[a-z][OPTIONAL]", "-[a-z]"
|
||
special form short style switch that matches character
|
||
range(not fullset of regular expression).
|
||
: "=MANDATORY", "=[OPTIONAL]"
|
||
argument style and description.
|
||
: "description", ...
|
||
((*description*)) for this option.
|
||
: (({block}))
|
||
((*handler*)) to convert option argument to arbitrary (({Class})).
|
||
=end #'#"#`#
|
||
=begin private
|
||
--- OptionParser#notwice(obj, prv, msg)
|
||
Checks never given twice an argument.
|
||
((*Called from OptionParser#switch only*))
|
||
:Parameters:
|
||
: ((|obj|))
|
||
new argument.
|
||
: ((|prv|))
|
||
previously specified argument.
|
||
: ((|msg|))
|
||
exception message
|
||
=end #'#"#`#
|
||
def notwice(obj, prv, msg)
|
||
unless !prv or prv == obj
|
||
begin
|
||
raise ArgumentError, "argument #{msg} given twice: #{obj}"
|
||
rescue
|
||
$@[0, 2] = nil
|
||
raise
|
||
end
|
||
end
|
||
obj
|
||
end
|
||
private :notwice
|
||
|
||
def make_switch(*opts, &block)
|
||
short, long, nolong, style, pattern, conv, not_pattern, not_conv, not_style = [], [], []
|
||
ldesc, sdesc, desc, arg = [], [], []
|
||
default_style = Switch::NoArgument
|
||
default_pattern = nil
|
||
klass = nil
|
||
o = nil
|
||
n, q, a = nil
|
||
|
||
opts.each do |o|
|
||
# argument class
|
||
next if search(:atype, o) do |pat, c|
|
||
klass = notwice(o, klass, 'type')
|
||
if not_style and not_style != Switch::NoArgument
|
||
not_pattern, not_conv = pat, c
|
||
else
|
||
default_pattern, conv = pat, c
|
||
end
|
||
end
|
||
|
||
# directly specified pattern(any object possible to match)
|
||
if !(String === o) and o.respond_to?(:match)
|
||
pattern = notwice(o, pattern, 'pattern')
|
||
conv = (pattern.method(:convert).to_proc if pattern.respond_to?(:convert))
|
||
next
|
||
end
|
||
|
||
# anything others
|
||
case o
|
||
when Proc, Method
|
||
block = notwice(o, block, 'block')
|
||
when Array, Hash
|
||
case pattern
|
||
when CompletingHash
|
||
when nil
|
||
pattern = CompletingHash.new
|
||
conv = (pattern.method(:convert).to_proc if pattern.respond_to?(:convert))
|
||
else
|
||
raise ArgumentError, "argument pattern given twice"
|
||
end
|
||
if Array === o
|
||
o.each {|o| pattern[(Array === o ? o[0] : o)] = o}
|
||
else
|
||
pattern.update(o)
|
||
end
|
||
when Module
|
||
raise ArgumentError, "unsupported argument type: #{o}"
|
||
when *ArgumentStyle.keys
|
||
style = notwice(ArgumentStyle[o], style, 'style')
|
||
when /^--no-([^\[\]=\s]*)(.+)?/
|
||
q, a = $1, $2
|
||
o = notwice(a ? Object : TrueClass, klass, 'type')
|
||
not_pattern, not_conv = search(:atype, o) unless not_style
|
||
not_style = (not_style || default_style).guess(arg = a) if a
|
||
default_style = Switch::NoArgument
|
||
default_pattern, conv = search(:atype, FalseClass) unless default_pattern
|
||
ldesc << "--no-#{q}"
|
||
long << 'no-' + (q = q.downcase)
|
||
nolong << q
|
||
when /^--\[no-\]([^\[\]=\s]*)(.+)?/
|
||
q, a = $1, $2
|
||
o = notwice(a ? Object : TrueClass, klass, 'type')
|
||
if a
|
||
default_style = default_style.guess(arg = a)
|
||
default_pattern, conv = search(:atype, o) unless default_pattern
|
||
end
|
||
ldesc << "--#{q}"
|
||
long << (o = q.downcase)
|
||
not_pattern, not_conv = search(:atype, FalseClass) unless not_style
|
||
not_style = Switch::NoArgument
|
||
nolong << 'no-' + o
|
||
when /^--([^\[\]=\s]*)(.+)?/
|
||
q, a = $1, $2
|
||
if a
|
||
o = notwice(NilClass, klass, 'type')
|
||
default_style = default_style.guess(arg = a)
|
||
default_pattern, conv = search(:atype, o) unless default_pattern
|
||
end
|
||
ldesc << "--#{q}"
|
||
long << (o = q.downcase)
|
||
when /^-(\[\^?\]?(?:[^\\\]]|\\.)*\])(.+)?/
|
||
q, a = $1, $2
|
||
o = notwice(Object, klass, 'type')
|
||
if a
|
||
default_style = default_style.guess(arg = a)
|
||
default_pattern, conv = search(:atype, o) unless default_pattern
|
||
end
|
||
sdesc << "-#{q}"
|
||
short << Regexp.new(q)
|
||
when /^-(.)(.+)?/
|
||
q, a = $1, $2
|
||
if a
|
||
o = notwice(NilClass, klass, 'type')
|
||
default_style = default_style.guess(arg = a)
|
||
default_pattern, conv = search(:atype, o) unless default_pattern
|
||
end
|
||
sdesc << "-#{q}"
|
||
short << q
|
||
when /^=/
|
||
style = notwice(default_style.guess(arg = o), style, 'style')
|
||
default_pattern, conv = search(:atype, Object) unless default_pattern
|
||
else
|
||
desc.push(o)
|
||
end
|
||
end
|
||
|
||
default_pattern, conv = search(:atype, default_style.pattern) unless default_pattern
|
||
s = if short.empty? and long.empty?
|
||
raise ArgumentError, "no switch given" if style or pattern or block
|
||
desc
|
||
else
|
||
(style || default_style).new(pattern || default_pattern,
|
||
conv, sdesc, ldesc, arg, desc, block)
|
||
end
|
||
return s, short, long,
|
||
(not_style.new(not_pattern, not_conv, sdesc, ldesc, nil, desc, block) if not_style),
|
||
nolong
|
||
end
|
||
|
||
=begin
|
||
--- OptionParser#on(*opts) [{...}]
|
||
--- OptionParser#def_option(*opts) [{...}]
|
||
--- OptionParser#on_head(*opts) [{...}]
|
||
--- OptionParser#def_head_option(*opts) [{...}]
|
||
--- OptionParser#on_tail(*opts) [{...}]
|
||
--- OptionParser#def_tail_option(*opts) [{...}]
|
||
Defines option switch and handler. (({on_head})), (({def_head_option}))
|
||
and (({on_tail})), (({def_tail_option})) put the switch at head
|
||
and tail of summary, respectively.
|
||
|
||
cf. ((<OptionParser#switch>)).
|
||
=end #'#"#`#
|
||
def define(*opts, &block)
|
||
top.append(*(sw = make_switch(*opts, &block)))
|
||
sw[0]
|
||
end
|
||
def on(*opts, &block)
|
||
define(*opts, &block)
|
||
self
|
||
end
|
||
alias def_option define
|
||
|
||
def define_head(*opts, &block)
|
||
top.prepend(*(sw = make_switch(*opts, &block)))
|
||
sw[0]
|
||
end
|
||
def on_head(*opts, &block)
|
||
define_head(*opts, &block)
|
||
self
|
||
end
|
||
alias def_head_option define_head
|
||
|
||
def define_tail(*opts, &block)
|
||
base.append(*(sw = make_switch(*opts, &block)))
|
||
sw[0]
|
||
end
|
||
def on_tail(*opts, &block)
|
||
define_tail(*opts, &block)
|
||
self
|
||
end
|
||
alias def_tail_option define_tail
|
||
|
||
def separator(string)
|
||
top.append(string, nil, nil)
|
||
end
|
||
|
||
|
||
=begin
|
||
--- OptionParser#order(*argv) [{...}]
|
||
--- OptionParser#order!([argv = ARGV]) [{...}]
|
||
Parses ((|argv|)) in order. When non-option argument encountered,
|
||
yields it if called as iterator, otherwise terminates the parse
|
||
process.
|
||
Returns rest of ((|argv|)) left unparsed.
|
||
|
||
(({order!})) takes argument array itself, and removes switches
|
||
destructively.
|
||
Defaults to parse ((|ARGV|)).
|
||
:Parameters:
|
||
: ((|argv|))
|
||
command line arguments to be parsed.
|
||
: (({block}))
|
||
called with each non-option argument.
|
||
=end #'#"#`#
|
||
def order(*argv, &block)
|
||
argv = argv[0].dup if argv.size == 1 and Array === argv[0]
|
||
order!(argv, &block)
|
||
end
|
||
|
||
def order!(argv = ARGV, &nonopt)
|
||
opt, arg, sw, val, rest = nil
|
||
nonopt ||= proc {|arg| throw :terminate, arg}
|
||
argv.unshift(arg) if arg = catch(:terminate) {
|
||
while arg = argv.shift
|
||
case arg
|
||
# long option
|
||
when /\A--([^=]*)(?:=(.*))?/
|
||
opt, rest = $1, $2
|
||
begin
|
||
sw, = complete(:long, opt)
|
||
rescue ParseError
|
||
raise $!.set_option(arg, true)
|
||
end
|
||
begin
|
||
opt, sw, val = sw.parse(rest, argv) {|*exc| raise(*exc)}
|
||
sw.call(val) if sw
|
||
rescue ParseError
|
||
raise $!.set_option(arg, rest)
|
||
end
|
||
|
||
# short option
|
||
when /\A-(.)((=).*|.+)?/
|
||
opt, has_arg, eq, val, rest = $1, $3, $3, $2, $2
|
||
begin
|
||
unless sw = search(:short, opt)
|
||
begin
|
||
sw, = complete(:short, opt)
|
||
# short option matched.
|
||
val = arg.sub(/\A-/, '')
|
||
has_arg = true
|
||
rescue InvalidOption
|
||
# if no short options match, try completion with long
|
||
# options.
|
||
sw, = complete(:long, opt)
|
||
eq ||= !rest
|
||
end
|
||
end
|
||
rescue ParseError
|
||
raise $!.set_option(arg, true)
|
||
end
|
||
begin
|
||
opt, sw, val = sw.parse(val, argv) {|*exc| raise(*exc) if eq}
|
||
raise InvalidOption, arg if has_arg and !eq and arg == "-#{opt}"
|
||
argv.unshift(opt) if opt and (opt = opt.sub(/\A-*/, '-')) != '-'
|
||
sw.call(val) if sw
|
||
rescue ParseError
|
||
raise $!.set_option(arg, has_arg)
|
||
end
|
||
|
||
# non-option argument
|
||
else
|
||
nonopt.call(arg)
|
||
end
|
||
end
|
||
|
||
nil
|
||
}
|
||
|
||
argv
|
||
end
|
||
|
||
=begin
|
||
--- OptionParser#permute(*argv)
|
||
--- OptionParser#permute!([argv = ARGV])
|
||
Parses ((|argv|)) in permutation mode, and returns list of
|
||
non-option arguments.
|
||
|
||
(({permute!})) takes argument array itself, and removes switches
|
||
destructively.
|
||
Defaults to parse ((|ARGV|)).
|
||
:Parameters:
|
||
: ((|argv|))
|
||
command line arguments to be parsed.
|
||
=end #'#"#`#
|
||
def permute(*argv)
|
||
argv = argv[0].dup if argv.size == 1 and Array === argv[0]
|
||
permute!(argv)
|
||
end
|
||
|
||
def permute!(argv = ARGV)
|
||
nonopts = []
|
||
arg = nil
|
||
order!(argv) {|arg| nonopts << arg}
|
||
argv[0, 0] = nonopts
|
||
argv
|
||
end
|
||
|
||
=begin
|
||
--- OptionParser#parse(*argv)
|
||
--- OptionParser#parse!([argv = ARGV])
|
||
Parses ((|argv|)) in order when environment variable (({POSIXLY_CORRECT}))
|
||
is set, otherwise permutation mode
|
||
|
||
(({parse!})) takes argument array itself, and removes switches
|
||
destructively.
|
||
Defaults to parse ((|ARGV|)).
|
||
:Parameters:
|
||
: ((|argv|))
|
||
command line arguments to be parsed.
|
||
=end #'#"#`#
|
||
def parse(*argv)
|
||
argv = argv[0].dup if argv.size == 1 and Array === argv[0]
|
||
parse!(argv)
|
||
end
|
||
|
||
def parse!(argv = ARGV)
|
||
if ENV.include?('POSIXLY_CORRECT')
|
||
order!(argv)
|
||
else
|
||
permute!(argv)
|
||
end
|
||
end
|
||
|
||
|
||
=begin private
|
||
--- OptionParser#visit(id, *args) {block}
|
||
Traverses (({stack}))s calling method ((|id|)) with ((|*args|)).
|
||
:Parameters:
|
||
: ((|id|))
|
||
called method in each elements of (({stack}))s.
|
||
: ((|*args|))
|
||
passed to ((|id|)).
|
||
: (({block}))
|
||
passed to ((|id|)).
|
||
=end #'#"#`#
|
||
def visit(id, *args, &block)
|
||
el = nil
|
||
@stack.reverse_each do |el|
|
||
el.send(id, *args, &block)
|
||
end
|
||
nil
|
||
end
|
||
private :visit
|
||
|
||
=begin private
|
||
--- OptionParser#search(id, k)
|
||
Searches ((|k|)) in stack for ((|id|)) hash, and returns it or yielded
|
||
value if called as iterator.
|
||
:Parameters:
|
||
: ((|id|))
|
||
searching table.
|
||
: ((|k|))
|
||
searching key.
|
||
: (({block}))
|
||
yielded with the found value when succeeded.
|
||
=end #'#"#`#
|
||
def search(id, k)
|
||
visit(:search, id, k) do |k|
|
||
return k unless block_given?
|
||
return yield(k)
|
||
end
|
||
end
|
||
private :search
|
||
|
||
=begin private
|
||
--- OptionParser#complete(typ, opt, *etc)
|
||
Completes shortened long style option switch, and returns pair of
|
||
canonical switch and switch descriptor((<OptionParser::Switch>)).
|
||
:Parameters:
|
||
: ((|id|))
|
||
searching table.
|
||
: ((|opt|))
|
||
searching key.
|
||
: ((|*pat|))
|
||
optional pattern for completion.
|
||
: (({block}))
|
||
yielded with the found value when succeeded.
|
||
=end #'#"#`#
|
||
def complete(typ, opt, *pat)
|
||
if pat.empty?
|
||
search(typ, opt) {|sw| return [sw, opt]} # exact match or...
|
||
end
|
||
raise AmbiguousOption, catch(:ambiguous) {
|
||
visit(:complete, typ, opt, *pat) {|opt, *sw| return sw}
|
||
raise InvalidOption, opt
|
||
}
|
||
end
|
||
private :complete
|
||
|
||
=begin undocumented
|
||
--- OptionParser#load([filename])
|
||
Loads options from file named as ((|filename|)). Does nothing when
|
||
the file is not present. Returns whether successfuly loaded.
|
||
:Parameters:
|
||
: ((|filename|))
|
||
option file name. defaulted to basename of the program without
|
||
suffix in a directory ((%~/.options%)).
|
||
=end #'#"#`#
|
||
def load(filename = nil)
|
||
begin
|
||
filename ||= File.expand_path(File.basename($0, '.*'), '~/.options')
|
||
rescue
|
||
return false
|
||
end
|
||
begin
|
||
parse(*IO.readlines(filename).each {|s| s.chomp!})
|
||
true
|
||
rescue Errno::ENOENT, Errno::ENOTDIR
|
||
false
|
||
end
|
||
end
|
||
|
||
=begin undocumented
|
||
--- OptionParser#environment([env])
|
||
Parses environment variable ((|env|)) or its uppercase with spliting
|
||
like as shell.
|
||
:Parameters:
|
||
: ((|env|))
|
||
defaulted to basename of the program.
|
||
=end #'#"#`#
|
||
def environment(env = File.basename($0, '.*'))
|
||
env = ENV[env] || ENV[env.upcase] or return
|
||
parse(*Shellwords.shellwords(env))
|
||
end
|
||
|
||
|
||
=begin
|
||
= Acceptable argument classes
|
||
=end #'#"#`#
|
||
|
||
=begin
|
||
: Object
|
||
any string, and no conversion. this is fall-back.
|
||
=end #'#"#`#
|
||
accept(Object) {|s,|s or s.nil?}
|
||
|
||
accept(NilClass) {|s,|s}
|
||
|
||
=begin
|
||
: String
|
||
any none-empty string, and no conversion.
|
||
=end #'#"#`#
|
||
accept(String, /.+/) {|s,*|s}
|
||
|
||
=begin
|
||
: Integer
|
||
Ruby/C-like integer, octal for (({0-7})) sequence, binary for
|
||
(({0b})), hexadecimal for (({0x})), and decimal for others; with
|
||
optional sign prefix. Converts to (({Integer})).
|
||
=end #'#"#`#
|
||
decimal = '\d+(?:_\d+)*'
|
||
binary = 'b[01]+(?:_[01]+)*'
|
||
hex = 'x[\da-f]+(?:_[\da-f]+)*'
|
||
octal = "0(?:[0-7]*(?:_[0-7]+)*|#{binary}|#{hex})"
|
||
integer = "#{octal}|#{decimal}"
|
||
accept(Integer, %r"\A[-+]?(?:#{integer})"io) {|s,| Integer(s) if s}
|
||
|
||
=begin
|
||
: Float
|
||
Float number format, and converts to (({Float})).
|
||
=end #'#"#`#
|
||
float = "(?:#{decimal}(?:\\.(?:#{decimal})?)?|\\.#{decimal})(?:E[-+]?#{decimal})?"
|
||
floatpat = %r"\A[-+]?#{float}"io
|
||
accept(Float, floatpat) {|s,| s.to_f if s}
|
||
|
||
=begin
|
||
: Numeric
|
||
Generic numeric format, and converts to (({Integer})) for integer
|
||
format, (({Float})) for float format.
|
||
=end #'#"#`#
|
||
accept(Numeric, %r"\A[-+]?(?:#{octal}|#{float})"io) {|s,| eval(s) if s}
|
||
|
||
=begin
|
||
: OptionParser::DecimalInteger
|
||
Decimal integer format, to be converted to (({Integer})).
|
||
=end #'#"#`#
|
||
DecimalInteger = /\A[-+]?#{decimal}/io
|
||
accept(DecimalInteger) {|s,| s.to_i if s}
|
||
|
||
=begin
|
||
: OptionParser::OctalInteger
|
||
Ruby/C like octal/hexadecimal/binary integer format, to be converted
|
||
to (({Integer})).
|
||
=end #'#"#`#
|
||
OctalInteger = /\A[-+]?(?:[0-7]+(?:_[0-7]+)*|0(?:#{binary}|#{hex}))/io
|
||
accept(OctalInteger) {|s,| s.oct if s}
|
||
|
||
=begin
|
||
: OptionParser::DecimalNumeric
|
||
Decimal integer/float number format, to be converted to
|
||
(({Integer})) for integer format, (({Float})) for float format.
|
||
=end #'#"#`#
|
||
DecimalNumeric = floatpat # decimal integer is allowed as float also.
|
||
accept(DecimalNumeric) {|s,| eval(s) if s}
|
||
|
||
=begin
|
||
: TrueClass
|
||
Boolean switch, which means whether it is present or not, whether it
|
||
is absent or not with prefix (({no-})), or it takes an argument
|
||
(({yes/no/true/false/+/-})).
|
||
: FalseClass
|
||
Similar to ((<TrueClass>)), but defaulted to (({false})).
|
||
=end #'#"#`#
|
||
yesno = CompletingHash.new
|
||
%w[- no false].each {|el| yesno[el] = false}
|
||
%w[+ yes true].each {|el| yesno[el] = true}
|
||
yesno['nil'] = false # shoud be nil?
|
||
accept(TrueClass, yesno) {|arg, val| val == nil or val}
|
||
accept(FalseClass, yesno) {|arg, val| val != nil and val}
|
||
|
||
=begin
|
||
: Array
|
||
List of strings separated by ","
|
||
=end #'#"#`#
|
||
accept(Array) do |s,|
|
||
if s
|
||
s = s.split(',').collect {|s| s unless s.empty?}
|
||
end
|
||
s
|
||
end
|
||
|
||
|
||
=begin
|
||
= Exceptions
|
||
=end #'#"#`#
|
||
|
||
=begin
|
||
== ((:OptionParser::ParseError:))
|
||
Base class of exceptions from ((<OptionParser>))
|
||
=== Superclass
|
||
(({RuntimeError}))
|
||
=== Constants
|
||
: OptionParser::ParseError::Reason
|
||
Reason caused error.
|
||
=== Instance methods
|
||
--- OptionParser::ParseError#recover(argv)
|
||
Push backs erred argument(s) to ((|argv|)).
|
||
--- OptionParser::ParseError#reason
|
||
Returns error reason. Override this to I18N.
|
||
--- OptionParser::ParseError#inspect
|
||
Returns inspection string.
|
||
--- OptionParser::ParseError#message
|
||
--- OptionParser::ParseError#to_s
|
||
--- OptionParser::ParseError#to_str
|
||
Default stringizing method to emit standard error message.
|
||
=end #'#"#`#
|
||
class ParseError < RuntimeError
|
||
Reason = 'parse error'.freeze
|
||
|
||
def initialize(*args)
|
||
@args = args
|
||
@reason = nil
|
||
end
|
||
|
||
attr_reader :args
|
||
attr_writer :reason
|
||
|
||
def recover(argv)
|
||
argv[0, 0] = @args
|
||
argv
|
||
end
|
||
|
||
def set_option(opt, eq)
|
||
if eq
|
||
@args[0] = opt
|
||
else
|
||
@args.unshift(opt)
|
||
end
|
||
self
|
||
end
|
||
|
||
def reason
|
||
@reason || self.class::Reason
|
||
end
|
||
|
||
def inspect
|
||
"#<#{self.class.to_s}: #{args.join(' ')}>"
|
||
end
|
||
|
||
def message
|
||
reason + ': ' + args.join(' ')
|
||
end
|
||
|
||
alias to_s message
|
||
alias to_str message
|
||
end
|
||
|
||
=begin
|
||
== ((:OptionParser::AmbiguousOption:))
|
||
Raises when encountered ambiguously completable string.
|
||
=== Superclass
|
||
((<OptionParser::ParseError>))
|
||
=end #'#"#`#
|
||
class AmbiguousOption < ParseError
|
||
const_set(:Reason, 'ambiguous option'.freeze)
|
||
end
|
||
|
||
=begin
|
||
== ((:OptionParser::NeedlessArgument:))
|
||
Raises when encountered argument for switch defined as which takes no
|
||
argument.
|
||
=== Superclass
|
||
((<OptionParser::ParseError>))
|
||
=end #'#"#`#
|
||
class NeedlessArgument < ParseError
|
||
const_set(:Reason, 'needles argument'.freeze)
|
||
end
|
||
|
||
=begin
|
||
== ((:OptionParser::MissingArgument:))
|
||
Raises when no argument found for switch defined as which needs
|
||
argument.
|
||
=== Superclass
|
||
((<OptionParser::ParseError>))
|
||
=end #'#"#`#
|
||
class MissingArgument < ParseError
|
||
const_set(:Reason, 'missing argument'.freeze)
|
||
end
|
||
|
||
=begin
|
||
== ((:OptionParser::InvalidOption:))
|
||
Raises when undefined switch.
|
||
=== Superclass
|
||
((<OptionParser::ParseError>))
|
||
=end #'#"#`#
|
||
class InvalidOption < ParseError
|
||
const_set(:Reason, 'invalid option'.freeze)
|
||
end
|
||
|
||
=begin
|
||
== ((:OptionParser::InvalidArgument:))
|
||
Raises when the given argument does not match required format.
|
||
=== Superclass
|
||
((<OptionParser::ParseError>))
|
||
=end #'#"#`#
|
||
class InvalidArgument < ParseError
|
||
const_set(:Reason, 'invalid argument'.freeze)
|
||
end
|
||
|
||
=begin
|
||
== ((:OptionParser::AmbiguousArgument:))
|
||
Raises when the given argument word can't completed uniquely.
|
||
=== Superclass
|
||
((<OptionParser::InvalidArgument>))
|
||
=end #'#"#`#
|
||
class AmbiguousArgument < InvalidArgument
|
||
const_set(:Reason, 'ambiguous argument'.freeze)
|
||
end
|
||
|
||
|
||
=begin
|
||
= Miscellaneous
|
||
=end #'#"#`#
|
||
=begin
|
||
== ((:OptionParser::Arguable:))
|
||
Extends command line arguments array to parse itself.
|
||
=end #'#"#`#
|
||
module Arguable
|
||
=begin
|
||
--- OptionParser::Arguable#options=(opt)
|
||
Sets ((<OptionParser>)) object, when ((|opt|)) is (({false})) or
|
||
(({nil})), methods ((<OptionParser::Arguable#options>)) and
|
||
((<OptionParser::Arguable#options=>)) are undefined. Thus, there
|
||
is no ways to access the ((<OptionParser>)) object via the
|
||
receiver object.
|
||
=end #'#"#`#
|
||
def options=(opt)
|
||
unless @optparse = opt
|
||
class << self
|
||
undef_method(:options)
|
||
undef_method(:options=)
|
||
end
|
||
end
|
||
end
|
||
|
||
=begin
|
||
--- OptionParser::Arguable#options
|
||
Actual ((<OptionParser>)) object, automatically created if not
|
||
yet.
|
||
|
||
If called as iterator, yields with the ((<OptionParser>)) object
|
||
and returns the result of the block. In this case, rescues any
|
||
((<OptionParser::ParseError>)) exceptions in the block, just emits
|
||
error message to ((<STDERR>)) and returns (({nil})).
|
||
|
||
:Parameters:
|
||
: (({block}))
|
||
Yielded with the ((<OptionParser>)) instance.
|
||
|
||
=end #'#"#`#
|
||
def options
|
||
@optparse ||= OptionParser.new
|
||
block_given? or return @optparse
|
||
begin
|
||
yield @optparse
|
||
rescue ParseError
|
||
@optparse.warn $!
|
||
nil
|
||
end
|
||
end
|
||
|
||
=begin
|
||
--- OptionParser::Arguable#order!
|
||
--- OptionParser::Arguable#permute!
|
||
--- OptionParser::Arguable#parse!
|
||
Parses ((|self|)) destructively, and returns ((|self|)) just contains
|
||
rest arguments left without parsed.
|
||
=end #'#"#`#
|
||
def order!(&blk) options.order!(self, &blk) end
|
||
def permute!() options.permute!(self) end
|
||
def parse!() options.parse!(self) end
|
||
|
||
=begin private
|
||
Initializes instance variable.
|
||
=end #'#"#`#
|
||
def self.extend_object(obj)
|
||
super
|
||
obj.instance_eval {@optparse = nil}
|
||
end
|
||
def initialize(*args)
|
||
super
|
||
@optparse = nil
|
||
end
|
||
end
|
||
|
||
=begin
|
||
== OptionParser::Acceptables
|
||
Acceptable argument classes. Now contains (({DecimalInteger})),
|
||
(({OctalInteger})) and (({DecimalNumeric})).
|
||
see ((<Acceptable argument classes>)).
|
||
=end #'#"#`#
|
||
module Acceptables
|
||
const_set(:DecimalInteger, OptionParser::DecimalInteger)
|
||
const_set(:OctalInteger, OptionParser::OctalInteger)
|
||
const_set(:DecimalNumeric, OptionParser::DecimalNumeric)
|
||
end
|
||
end
|
||
|
||
# ARGV is arguable by OptionParser
|
||
ARGV.extend(OptionParser::Arguable)
|
||
|
||
|
||
if $0 == __FILE__
|
||
Version = OptionParser::Version
|
||
ARGV.options {|q|
|
||
q.parse!.empty? or puts "what's #{ARGV.join(' ')}?"
|
||
} or exit 1
|
||
end
|
||
__END__
|
||
=begin example
|
||
= Example
|
||
<<< opttest.rb
|
||
=end #'#"#`#
|