1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
class Bundler::Thor
class Option < Argument #:nodoc:
attr_reader :aliases, :group, :lazy_default, :hide
VALID_TYPES = [:boolean, :numeric, :hash, :array, :string]
def initialize(name, options = {})
@check_default_type = options[:check_default_type]
options[:required] = false unless options.key?(:required)
super
@lazy_default = options[:lazy_default]
@group = options[:group].to_s.capitalize if options[:group]
@aliases = Array(options[:aliases])
@hide = options[:hide]
end
# This parse quick options given as method_options. It makes several
# assumptions, but you can be more specific using the option method.
#
# parse :foo => "bar"
# #=> Option foo with default value bar
#
# parse [:foo, :baz] => "bar"
# #=> Option foo with default value bar and alias :baz
#
# parse :foo => :required
# #=> Required option foo without default value
#
# parse :foo => 2
# #=> Option foo with default value 2 and type numeric
#
# parse :foo => :numeric
# #=> Option foo without default value and type numeric
#
# parse :foo => true
# #=> Option foo with default value true and type boolean
#
# The valid types are :boolean, :numeric, :hash, :array and :string. If none
# is given a default type is assumed. This default type accepts arguments as
# string (--foo=value) or booleans (just --foo).
#
# By default all options are optional, unless :required is given.
#
def self.parse(key, value)
if key.is_a?(Array)
name, *aliases = key
else
name = key
aliases = []
end
name = name.to_s
default = value
type = case value
when Symbol
default = nil
if VALID_TYPES.include?(value)
value
elsif required = (value == :required) # rubocop:disable AssignmentInCondition
:string
end
when TrueClass, FalseClass
:boolean
when Numeric
:numeric
when Hash, Array, String
value.class.name.downcase.to_sym
end
new(name.to_s, :required => required, :type => type, :default => default, :aliases => aliases)
end
def switch_name
@switch_name ||= dasherized? ? name : dasherize(name)
end
def human_name
@human_name ||= dasherized? ? undasherize(name) : name
end
def usage(padding = 0)
sample = if banner && !banner.to_s.empty?
"#{switch_name}=#{banner}".dup
else
switch_name
end
sample = "[#{sample}]".dup unless required?
if boolean?
sample << ", [#{dasherize('no-' + human_name)}]" unless (name == "force") || name.start_with?("no-")
end
if aliases.empty?
(" " * padding) << sample
else
"#{aliases.join(', ')}, #{sample}"
end
end
VALID_TYPES.each do |type|
class_eval <<-RUBY, __FILE__, __LINE__ + 1
def #{type}?
self.type == #{type.inspect}
end
RUBY
end
protected
def validate!
raise ArgumentError, "An option cannot be boolean and required." if boolean? && required?
validate_default_type! if @check_default_type
end
def validate_default_type!
default_type = case @default
when nil
return
when TrueClass, FalseClass
required? ? :string : :boolean
when Numeric
:numeric
when Symbol
:string
when Hash, Array, String
@default.class.name.downcase.to_sym
end
raise ArgumentError, "Expected #{@type} default value for '#{switch_name}'; got #{@default.inspect} (#{default_type})" unless default_type == @type
end
def dasherized?
name.index("-") == 0
end
def undasherize(str)
str.sub(/^-{1,2}/, "")
end
def dasherize(str)
(str.length > 1 ? "--" : "-") + str.tr("_", "-")
end
end
end
|
