Class: MSpecOptions

Inherits:
Object show all
Defined in:
lib/mspec/utils/options.rb

Overview

MSpecOptions provides a parser for command line options. It also provides a composable set of options from which the runner scripts can select for their particular functionality.

Defined Under Namespace

Classes: OptionError, ParseError

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(banner = "", width = 30, config = nil) {|_self| ... } ⇒ MSpecOptions

Returns a new instance of MSpecOptions.

Yields:

  • (_self)

Yield Parameters:

  • _self (MSpecOptions) —

    the object that the method was called on



35
36
37
38
39
40
41
42
43
44
45
46
47
48
 
# File 'lib/mspec/utils/options.rb', line 35

def initialize(banner="", width=30, config=nil)
  @banner   = banner
  @config   = config
  @width    = width
  @options  = []
  @doc      = []
  @extra    = []
  @on_extra = lambda { |x|
    raise ParseError, "Unrecognized option: #{x}" if x[0] == ?-
    @extra << x
  }

  yield self if block_given?
end

Instance Attribute Details

Returns the value of attribute banner.



33
34
35
 
# File 'lib/mspec/utils/options.rb', line 33

def banner
  @banner
end

#config ⇒ Object

Returns the value of attribute config.



33
34
35
 
# File 'lib/mspec/utils/options.rb', line 33

def config
  @config
end

#options ⇒ Object

Returns the value of attribute options.



33
34
35
 
# File 'lib/mspec/utils/options.rb', line 33

def options
  @options
end

#width ⇒ Object

Returns the value of attribute width.



33
34
35
 
# File 'lib/mspec/utils/options.rb', line 33

def width
  @width
end

Instance Method Details

#action_filters ⇒ Object 



426
427
428
429
430
431
432
433
434
435
 
# File 'lib/mspec/utils/options.rb', line 426

def action_filters
  on("-K", "--action-tag", "TAG",
     "Spec descriptions marked with TAG will trigger the specified action") do |o|
    config[:atags] << o
  end
  on("-S", "--action-string", "STR",
     "Spec descriptions matching STR will trigger the specified action") do |o|
    config[:astrings] << o
  end
end

#actions ⇒ Object 



437
438
439
440
441
442
443
444
445
446
 
# File 'lib/mspec/utils/options.rb', line 437

def actions
  on("--spec-debug",
     "Invoke the debugger when a spec description matches (see -K, -S)") do
    config[:debugger] = true
  end
  on("--spec-gdb",
     "Invoke Gdb when a spec description matches (see -K, -S)") do
    config[:gdb] = true
  end
end

#add(short, long, arg, description, block) ⇒ Object

Adds documentation text for an option and adds an MSpecOption instance to the list of registered options.



82
83
84
85
86
87
 
# File 'lib/mspec/utils/options.rb', line 82

def add(short, long, arg, description, block)
  s = short ? short.dup : "  "
  s << (short ? ", " : "  ") if long
  doc "   #{s}#{long} #{arg}".ljust(@width-1) + " #{description}"
  @options << MSpecOption.new(short, long, arg, description, block)
end

#background ⇒ Object 



358
359
360
361
362
363
 
# File 'lib/mspec/utils/options.rb', line 358

def background
  on("--background",
     "Enable guard for specs that may hang in background processes") do
    MSpec.register_mode :background
  end
end

#chdir ⇒ Object 



338
339
340
341
342
343
 
# File 'lib/mspec/utils/options.rb', line 338

def chdir
  on("-C", "--chdir", "DIR",
     "Change the working directory to DIR before running specs") do |d|
    Dir.chdir d
  end
end

#configure(&block) ⇒ Object

The methods below provide groups of options that are composed by the particular runners to provide their functionality



196
197
198
199
 
# File 'lib/mspec/utils/options.rb', line 196

def configure(&block)
  on("-B", "--config", "FILE",
     "Load FILE containing configuration options", &block)
end

#debug ⇒ Object 



448
449
450
451
452
453
 
# File 'lib/mspec/utils/options.rb', line 448

def debug
  on("-d", "--debug",
     "Set MSpec debugging flag for more verbose output") do
    $MSPEC_DEBUG = true
  end
end

#doc(str) ⇒ Object

Adds a string of documentation text inline in the text generated from the options. See #on and #add.



166
167
168
 
# File 'lib/mspec/utils/options.rb', line 166

def doc(str)
  @doc << str
end

#filters ⇒ Object 



303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
 
# File 'lib/mspec/utils/options.rb', line 303

def filters
  on("-e", "--example", "STR",
     "Run examples with descriptions matching STR") do |o|
    config[:includes] << o
  end
  on("-E", "--exclude", "STR",
     "Exclude examples with descriptions matching STR") do |o|
    config[:excludes] << o
  end
  on("-p", "--pattern", "PATTERN",
     "Run examples with descriptions matching PATTERN") do |o|
    config[:patterns] << Regexp.new(o)
  end
  on("-P", "--excl-pattern", "PATTERN",
     "Exclude examples with descriptions matching PATTERN") do |o|
    config[:xpatterns] << Regexp.new(o)
  end
  on("-g", "--tag", "TAG",
     "Run examples with descriptions matching ones tagged with TAG") do |o|
    config[:tags] << o
  end
  on("-G", "--excl-tag", "TAG",
     "Exclude examples with descriptions matching ones tagged with TAG") do |o|
    config[:xtags] << o
  end
  on("-w", "--profile", "FILE",
     "Run examples for methods listed in the profile FILE") do |f|
    config[:profiles] << f
  end
  on("-W", "--excl-profile", "FILE",
     "Exclude examples for methods listed in the profile FILE") do |f|
    config[:xprofiles] << f
  end
end

#formatters ⇒ Object 



255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
 
# File 'lib/mspec/utils/options.rb', line 255

def formatters
  on("-f", "--format", "FORMAT",
     "Formatter for reporting, where FORMAT is one of:") do |o|
    case o
    when 's', 'spec', 'specdoc'
      config[:formatter] = SpecdocFormatter
    when 'h', 'html'
      config[:formatter] = HtmlFormatter
    when 'd', 'dot', 'dotted'
      config[:formatter] = DottedFormatter
    when 'b', 'describe'
      config[:formatter] = DescribeFormatter
    when 'f', 'file'
      config[:formatter] = FileFormatter
    when 'u', 'unit', 'unitdiff'
      config[:formatter] = UnitdiffFormatter
    when 'm', 'summary'
      config[:formatter] = SummaryFormatter
    when 'a', '*', 'spin'
      config[:formatter] = SpinnerFormatter
    when 't', 'method'
      config[:formatter] = MethodFormatter
    when 'y', 'yaml'
      config[:formatter] = YamlFormatter
    else
      puts "Unknown format: #{o}"
      puts @parser
      exit
    end
  end

  doc ""
  doc "       s, spec, specdoc         SpecdocFormatter"
  doc "       h, html,                 HtmlFormatter"
  doc "       d, dot, dotted           DottedFormatter"
  doc "       f, file                  FileFormatter"
  doc "       u, unit, unitdiff        UnitdiffFormatter"
  doc "       m, summary               SummaryFormatter"
  doc "       a, *, spin               SpinnerFormatter"
  doc "       t, method                MethodFormatter"
  doc "       y, yaml                  YamlFormatter\n"

  on("-o", "--output", "FILE",
     "Write formatter output to FILE") do |f|
    config[:output] = f
  end
end

#help(&block) ⇒ Object

Convenience method for providing -h, –help options.



177
178
179
180
 
# File 'lib/mspec/utils/options.rb', line 177

def help(&block)
  help = block || lambda { puts self; exit 1 }
  on "-h", "--help", "Show this message", &help
end

#interrupt ⇒ Object 



406
407
408
409
410
 
# File 'lib/mspec/utils/options.rb', line 406

def interrupt
  on("--int-spec", "Control-C interupts the current spec only") do
    config[:abort] = false
  end
end

#match?(opt) ⇒ Boolean

Searches all registered options to find a match for opt. Returns nil if no registered options match.

Returns:

  • (Boolean) 


91
92
93
 
# File 'lib/mspec/utils/options.rb', line 91

def match?(opt)
  @options.find { |o| o.match? opt }
end

#name ⇒ Object 



201
202
203
204
205
206
 
# File 'lib/mspec/utils/options.rb', line 201

def name
  on("-n", "--name", "RUBY_NAME",
     "Set the value of RUBY_NAME (used to determine the implementation)") do |n|
    Object.const_set :RUBY_NAME, n
  end
end

#on(*args, &block) ⇒ Object

Registers an option. Acceptable formats for arguments are:

on "-a", "description"
on "-a", "--abdc", "description"
on "-a", "ARG", "description"
on "--abdc", "ARG", "description"
on "-a", "--abdc", "ARG", "description"

If an block is passed, it will be invoked when the option is matched. Not passing a block is permitted, but nonsensical.

Raises:



60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
 
# File 'lib/mspec/utils/options.rb', line 60

def on(*args, &block)
  raise OptionError, "option and description are required" if args.size < 2

  description = args.pop
  short, long, argument = nil
  args.each do |arg|
    if arg[0] == ?-
      if arg[1] == ?-
        long = arg
      else
        short = arg
      end
    else
      argument = arg
    end
  end

  add short, long, argument, description, block
end

#on_extra(&block) ⇒ Object

Stores a block that will be called with unrecognized options



183
184
185
 
# File 'lib/mspec/utils/options.rb', line 183

def on_extra(&block)
  @on_extra = block
end

#parse(argv = ARGV) ⇒ Object

Parses an array of command line entries, calling blocks for registered options.



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
 
# File 'lib/mspec/utils/options.rb', line 124

def parse(argv=ARGV)
  argv = Array(argv).dup

  while entry = argv.shift
    # collect everything that is not an option
    if entry[0] != ?- or entry.size < 2
      @on_extra[entry]
      next
    end

    # this is a long option
    if entry[1] == ?-
      opt, arg = entry.split "="
      process argv, entry, opt, arg
      next
    end

    # disambiguate short option group from short option with argument
    opt, arg, rest = split entry, 2

    # process first option
    option = process argv, entry, opt, arg
    next unless option and not option.arg?

    # process the rest of the options
    while rest.size > 0
      opt, arg, rest = split rest, 1
      opt = "-" + opt
      option = process argv, opt, opt, arg
      break if option.arg?
    end
  end

  @extra
rescue ParseError => e
  puts self
  puts e
  exit 1
end

#prefix ⇒ Object 



345
346
347
348
349
 
# File 'lib/mspec/utils/options.rb', line 345

def prefix
  on("--prefix", "STR", "Prepend STR when resolving spec file names") do |p|
    config[:prefix] = p
  end
end

#pretend ⇒ Object 



351
352
353
354
355
356
 
# File 'lib/mspec/utils/options.rb', line 351

def pretend
  on("-Z", "--dry-run",
     "Invoke formatters and other actions, but don't execute the specs") do
    MSpec.register_mode :pretend
  end
end

#process(argv, entry, opt, arg) ⇒ Object

Processes an option. Calles the #on_extra block (or default) for unrecognized options. For registered options, possibly fetches an argument and invokes the option’s block if it is not nil.



98
99
100
101
102
103
104
105
106
107
108
109
110
111
 
# File 'lib/mspec/utils/options.rb', line 98

def process(argv, entry, opt, arg)
  unless option = match?(opt)
    @on_extra[entry]
  else
    if option.arg?
      arg = argv.shift if arg.nil?
      raise ParseError, "No argument provided for #{opt}" unless arg
      option.block[arg] if option.block
    else
      option.block[] if option.block
    end
  end
  option
end

#randomize ⇒ Object 



374
375
376
377
378
379
 
# File 'lib/mspec/utils/options.rb', line 374

def randomize
  on("-H", "--random",
     "Randomize the list of spec files") do
    MSpec.randomize
  end
end

#split(str, n) ⇒ Object

Splits a string at n characters into the opt and the rest. The arg is set to nil if rest is an empty string.



115
116
117
118
119
120
 
# File 'lib/mspec/utils/options.rb', line 115

def split(str, n)
  opt  = str[0, n]
  rest = str[n, str.size]
  arg  = rest == "" ? nil : rest
  return opt, arg, rest
end

#targets ⇒ Object 



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
244
245
246
247
248
249
250
251
252
253
 
# File 'lib/mspec/utils/options.rb', line 208

def targets
  on("-t", "--target", "TARGET",
     "Implementation to run the specs, where TARGET is:") do |t|
    case t
    when 'r', 'ruby'
      config[:target] = 'ruby'
    when 'r19', 'ruby19'
      config[:target] = 'ruby1.9'
    when 'x', 'rubinius'
      config[:target] = './bin/rbx'
    when 'X', 'rbx'
      config[:target] = 'rbx'
    when 'j', 'jruby'
      config[:target] = 'jruby'
    when 'i','ironruby'
      config[:target] = 'ir'
    when 'm','maglev'
      config[:target] = 'maglev-ruby'
    else
      config[:target] = t
    end
  end

  doc ""
  doc "     r or ruby              invokes ruby in PATH"
  doc "     r19, ruby19 or ruby1.9 invokes ruby1.9 in PATH"
  doc "     x or rubinius          invokes ./bin/rbx"
  doc "     X or rbx               invokes rbx in PATH"
  doc "     j or jruby             invokes jruby in PATH"
  doc "     i or ironruby          invokes ir in PATH"
  doc "     m or maglev            invokes maglev-ruby in PATH"
  doc "     full path to EXE       invokes EXE directly\n"

  on("-T", "--target-opt", "OPT",
     "Pass OPT as a flag to the target implementation") do |t|
    config[:flags] << t
  end
  on("-I", "--include", "DIR",
     "Pass DIR through as the -I option to the target") do |d|
    config[:includes] << "-I#{d}"
  end
  on("-r", "--require", "LIBRARY",
     "Pass LIBRARY through as the -r option to the target") do |f|
    config[:requires] << "-r#{f}"
  end
end

#to_s ⇒ Object

Returns a string representation of the options and doc strings.



188
189
190
 
# File 'lib/mspec/utils/options.rb', line 188

def to_s
  @banner + "\n\n" + @doc.join("\n") + "\n"
end

#unguarded ⇒ Object 



365
366
367
368
369
370
371
372
 
# File 'lib/mspec/utils/options.rb', line 365

def unguarded
  on("--unguarded", "Turn off all guards") do
    MSpec.register_mode :unguarded
  end
  on("--no-ruby_bug", "Turn off the ruby_bug guard") do
    MSpec.register_mode :no_ruby_bug
  end
end

#verbose ⇒ Object 



381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
 
# File 'lib/mspec/utils/options.rb', line 381

def verbose
  on("-V", "--verbose", "Output the name of each file processed") do
    obj = Object.new
    def obj.start
      @width = MSpec.retrieve(:files).inject(0) { |max, f| f.size > max ? f.size : max }
    end
    def obj.load
      file = MSpec.retrieve :file
      print "\n#{file.ljust(@width)}"
    end
    MSpec.register :start, obj
    MSpec.register :load, obj
  end

  on("-m", "--marker", "MARKER",
     "Output MARKER for each file processed") do |o|
    obj = Object.new
    obj.instance_variable_set :@marker, o
    def obj.load
      print @marker
    end
    MSpec.register :load, obj
  end
end

#verify ⇒ Object 



412
413
414
415
416
417
418
419
420
421
422
423
424
 
# File 'lib/mspec/utils/options.rb', line 412

def verify
  on("--report-on", "GUARD", "Report specs guarded by GUARD") do |g|
    MSpec.register_mode :report_on
    SpecGuard.guards << g.to_sym
  end
  on("-O", "--report", "Report guarded specs") do
    MSpec.register_mode :report
  end
  on("-Y", "--verify",
     "Verify that guarded specs pass and fail as expected") do
    MSpec.register_mode :verify
  end
end

#version(version, &block) ⇒ Object

Convenience method for providing -v, –version options.



171
172
173
174
 
# File 'lib/mspec/utils/options.rb', line 171

def version(version, &block)
  show = block || lambda { puts "#{File.basename $0} #{version}"; exit }
  on "-v", "--version", "Show version", &show
end