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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
$:.unshift File.expand_path(File.dirname(__FILE__))
require 'thor/base'
require 'thor/group'
require 'thor/actions'
class Thor
class << self
# Sets the default task when thor is executed without an explicit task to be called.
#
# ==== Parameters
# meth<Symbol>:: name of the defaut task
#
def default_task(meth=nil)
case meth
when :none
@default_task = 'help'
when nil
@default_task ||= from_superclass(:default_task, 'help')
else
@default_task = meth.to_s
end
end
# Defines the usage and the description of the next task.
#
# ==== Parameters
# usage<String>
# description<String>
#
def desc(usage, description, options={})
if options[:for]
task = find_and_refresh_task(options[:for])
task.usage = usage if usage
task.description = description if description
else
@usage, @desc = usage, description
end
end
# Maps an input to a task. If you define:
#
# map "-T" => "list"
#
# Running:
#
# thor -T
#
# Will invoke the list task.
#
# ==== Parameters
# Hash[String|Array => Symbol]:: Maps the string or the strings in the array to the given task.
#
def map(mappings=nil)
@map ||= from_superclass(:map, {})
if mappings
mappings.each do |key, value|
if key.respond_to?(:each)
key.each {|subkey| @map[subkey] = value}
else
@map[key] = value
end
end
end
@map
end
# Declares the options for the next task to be declared.
#
# ==== Parameters
# Hash[Symbol => Object]:: The hash key is the name of the option and the value
# is the type of the option. Can be :string, :array, :hash, :boolean, :numeric
# or :required (string). If you give a value, the type of the value is used.
#
def method_options(options=nil)
@method_options ||= {}
build_options(options, @method_options) if options
@method_options
end
# Adds an option to the set of class options. If :for is given as option,
# it allows you to change the options from a previous defined task.
#
# def previous_task
# # magic
# end
#
# method_options :foo => :bar, :for => :previous_task
#
# def next_task
# # magic
# end
#
# ==== Parameters
# name<Symbol>:: The name of the argument.
# options<Hash>:: Described below.
#
# ==== Options
# :desc - Description for the argument.
# :required - If the argument is required or not.
# :default - Default value for this argument. It cannot be required and have default values.
# :aliases - Aliases for this option.
# :type - The type of the argument, can be :string, :hash, :array, :numeric or :boolean.
# :group - The group for this options. Use by class options to output options in different levels.
# :banner - String to show on usage notes.
#
def method_option(name, options={})
scope = if options[:for]
find_and_refresh_task(options[:for]).options
else
method_options
end
build_option(name, options, scope)
end
# Parses the task and options from the given args, instantiate the class
# and invoke the task. This method is used when the arguments must be parsed
# from an array. If you are inside Ruby and want to use a Thor class, you
# can simply initialize it:
#
# script = MyScript.new(args, options, config)
# script.invoke(:task, first_arg, second_arg, third_arg)
#
def start(given_args=ARGV, config={})
super do
meth = normalize_task_name(given_args.shift)
task = all_tasks[meth]
if task
args, opts = Thor::Options.split(given_args)
config.merge!(:task_options => task.options)
else
args, opts = given_args, {}
end
task ||= Thor::Task::Dynamic.new(meth)
trailing = args[Range.new(arguments.size, -1)]
new(args, opts, config).invoke(task, trailing || [])
end
end
# Prints help information. If a task name is given, it shows information
# only about the specific task.
#
# ==== Parameters
# meth<String>:: An optional task name to print usage information about.
#
# ==== Options
# namespace:: When true, shows the namespace in the output before the usage.
# skip_inherited:: When true, does not show tasks from superclass.
#
def help(shell, meth=nil, options={})
meth, options = nil, meth if meth.is_a?(Hash)
if meth
task = all_tasks[meth]
raise UndefinedTaskError, "task '#{meth}' could not be found in namespace '#{self.namespace}'" unless task
shell.say "Usage:"
shell.say " #{banner(task, options[:namespace], false)}"
shell.say
class_options_help(shell, "Class", :Method => task.options.map { |_, o| o })
shell.say task.description
else
list = (options[:short] ? tasks : all_tasks).map do |_, task|
item = [ banner(task, options[:namespace]) ]
item << "# #{task.short_description}" if task.short_description
item << " "
end
options[:ident] ||= 2
if options[:short]
shell.print_list(list, :ident => options[:ident])
else
shell.say "Tasks:"
shell.print_list(list, :ident => options[:ident])
end
Thor::Util.thor_classes_in(self).each do |subclass|
namespace = options[:namespace] == true || subclass.namespace.gsub(/^#{self.namespace}:/, '')
subclass.help(shell, options.merge(:short => true, :namespace => namespace))
end
class_options_help(shell, "Class") unless options[:short]
end
end
protected
# The banner for this class. You can customize it if you are invoking the
# thor class by another ways which is not the Thor::Runner. It receives
# the task that is going to be invoked and a boolean which indicates if
# the namespace should be displayed as arguments.
#
def banner(task, namespace=true, show_options=true)
task.formatted_usage(self, namespace, show_options)
end
def baseclass #:nodoc:
Thor
end
def create_task(meth) #:nodoc:
if @usage && @desc
tasks[meth.to_s] = Thor::Task.new(meth, @desc, @usage, method_options)
@usage, @desc, @method_options = nil
true
elsif self.all_tasks[meth.to_s] || meth.to_sym == :method_missing
true
else
puts "[WARNING] Attempted to create task #{meth.inspect} without usage or description. " <<
"Call desc if you want this method to be available as task or declare it inside a " <<
"no_tasks{} block. Invoked from #{caller[1].inspect}."
false
end
end
def initialize_added #:nodoc:
class_options.merge!(method_options)
@method_options = nil
end
# Receives a task name (can be nil), and try to get a map from it.
# If a map can't be found use the sent name or the default task.
#
def normalize_task_name(meth) #:nodoc:
mapping = map[meth.to_s]
meth = mapping || meth || default_task
meth.to_s.gsub('-','_') # treat foo-bar > foo_bar
end
end
include Thor::Base
map HELP_MAPPINGS => :help
desc "help [TASK]", "Describe available tasks or one specific task"
def help(task=nil)
self.class.help(shell, task, :namespace => task && task.include?(?:))
end
end
|
