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Contents
module ApplixHash
module ClassMethods
# #from_argv builds hash from ARGV like argument vector according to
# following examples:
#
# '-f' --> { :f => true }
# '--flag' --> { :flag => true }
# '--flag:false' --> { :flag => false }
# '--flag=false' --> { :flag => 'false' }
# '--option=value' --> { :option => "value" }
# '--int=1' --> { :int => "1" }
# '--float=2.3' --> { :float => "2.3" }
# '--float:2.3' --> { :float => 2.3 }
# '--txt="foo bar"' --> { :txt => "foo bar" }
# '--txt:\'"foo bar"\'' --> { :txt => "foo bar" }
# '--txt:%w{foo bar}' --> { :txt => ["foo", "bar"] }
# '--now:Time.now' --> { :now => #<Date: 3588595/2,0,2299161> }
#
# remaining arguments(non flag/options) are inserted as [:args]. eg:
# Hash.from_argv %w(--foo --bar=loo 123 now)
# becomes
# { :foo => true, :bar => 'loo', :args => ["123", "now"] }
#
def from_argv argv, opts = {}
args, h = argv.clone, {}
while arg = args.first
key, val = ApplixHash.parse(arg)
break unless key
h[key] = val
args.shift
end
#[args, h]
h[:args] = args
h
end
end # ClassMethods
# parse single flag/option into a [key, value] tuple. returns nil on non
# option/flag arguments.
def self.parse(arg)
m = /^(-(\w)|--(\w\w+))(([=:])(.+))?$/.match(arg)
return [nil, arg] unless m # neither option nor flag -> straight arg
key = (m[2] || m[3]).to_sym
value = m[6][/(['"]?)(.*)\1$/,2] rescue true
value = eval(value) if m[5] == ':'
[key, value]
end
end
Hash.extend ApplixHash::ClassMethods
Version data entries
17 entries across 17 versions & 1 rubygems