96 lines
2.0 KiB
Ruby
96 lines
2.0 KiB
Ruby
# -*- coding: binary -*-
|
|
# frozen_string_literal: true
|
|
require 'shellwords'
|
|
|
|
module Rex
|
|
module Parser
|
|
###
|
|
#
|
|
# This class parses arguments in a getopt style format, kind of.
|
|
# Unfortunately, the default ruby getopt implementation will only
|
|
# work on ARGV, so we can't use it.
|
|
#
|
|
###
|
|
class Arguments
|
|
#
|
|
# Initializes the format list with an array of formats like:
|
|
#
|
|
# Arguments.new(
|
|
# '-b' => [ false, "some text" ]
|
|
# )
|
|
#
|
|
def initialize(fmt)
|
|
self.fmt = fmt
|
|
self.longest = fmt.keys.max_by(&:length)
|
|
end
|
|
|
|
#
|
|
# Takes a string and converts it into an array of arguments.
|
|
#
|
|
def self.from_s(str)
|
|
Shellwords.shellwords(str)
|
|
end
|
|
|
|
#
|
|
# Parses the supplied arguments into a set of options.
|
|
#
|
|
def parse(args, &_block)
|
|
skip_next = false
|
|
|
|
args.each_with_index do |arg, idx|
|
|
if skip_next
|
|
skip_next = false
|
|
next
|
|
end
|
|
|
|
if arg[0] == '-'
|
|
cfs = arg[0..2]
|
|
|
|
fmt.each_pair do |fmtspec, val|
|
|
next if fmtspec != cfs
|
|
|
|
param = nil
|
|
|
|
if val[0]
|
|
param = args[idx + 1]
|
|
skip_next = true
|
|
end
|
|
|
|
yield fmtspec, idx, param
|
|
end
|
|
else
|
|
yield nil, idx, arg
|
|
end
|
|
end
|
|
end
|
|
|
|
#
|
|
# Returns usage information for this parsing context.
|
|
#
|
|
def usage
|
|
txt = ["\nOPTIONS:\n"]
|
|
|
|
fmt.sort.each do |entry|
|
|
fmtspec, val = entry
|
|
opt = val[0] ? " <opt> " : " "
|
|
txt << " #{fmtspec.ljust(longest.length)}#{opt}#{val[1]}"
|
|
end
|
|
|
|
txt << ""
|
|
txt.join("\n")
|
|
end
|
|
|
|
def include?(search)
|
|
fmt.include?(search)
|
|
end
|
|
|
|
def arg_required?(opt)
|
|
fmt[opt][0] if fmt[opt]
|
|
end
|
|
|
|
attr_accessor :fmt # :nodoc:
|
|
attr_accessor :longest # :nodoc:
|
|
end
|
|
end
|
|
end
|