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



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# 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.



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

def banner
  @banner
end

#config ⇒ Object

Returns the value of attribute config.



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

def config
  @config
end

#options ⇒ Object

Returns the value of attribute options.



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

def options
  @options
end

#width ⇒ Object

Returns the value of attribute width.



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

def width
  @width
end

Instance Method Details

#action_filters ⇒ Object 



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# File 'lib/mspec/utils/options.rb', line 385

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 



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# File 'lib/mspec/utils/options.rb', line 396

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.



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# 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

#configure(&block) ⇒ Object

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



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# File 'lib/mspec/utils/options.rb', line 194

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

#doc(str) ⇒ Object

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



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# File 'lib/mspec/utils/options.rb', line 164

def doc(str)
  @doc << str
end

#filters ⇒ Object 



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# File 'lib/mspec/utils/options.rb', line 295

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 



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# File 'lib/mspec/utils/options.rb', line 249

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 '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.



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# File 'lib/mspec/utils/options.rb', line 175

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

#interrupt ⇒ Object 



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# File 'lib/mspec/utils/options.rb', line 369

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) 


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

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

#name ⇒ Object 



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

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:



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# 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



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# File 'lib/mspec/utils/options.rb', line 181

def on_extra(&block)
  @on_extra = block
end

#parse(argv = ARGV) ⇒ Object

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



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# File 'lib/mspec/utils/options.rb', line 122

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

#pretend ⇒ Object 



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# File 'lib/mspec/utils/options.rb', line 330

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.



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# 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
    end
    option.block[arg] if option.block
  end
  option
end

#randomize ⇒ Object 



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# File 'lib/mspec/utils/options.rb', line 337

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.



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# File 'lib/mspec/utils/options.rb', line 113

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

#targets ⇒ Object 



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# File 'lib/mspec/utils/options.rb', line 206

def targets
  on("-t", "--target", "TARGET",
     "Implementation to run the specs, where:") do |t|
    case t
    when 'r', 'ruby'
      config[:target] = 'ruby'
    when 'r19', 'ruby19'
      config[:target] = 'ruby19'
    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'
    else
      config[:target] = t
    end
  end

  doc ""
  doc "     r or ruby     invokes ruby in PATH"
  doc "     r19 or ruby19 invokes ruby19 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\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.



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# File 'lib/mspec/utils/options.rb', line 186

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

#verbose ⇒ Object 



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# File 'lib/mspec/utils/options.rb', line 344

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 



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# File 'lib/mspec/utils/options.rb', line 375

def verify
  on("-Y", "--verify",
     "Verify that guarded specs pass and fail as expected") do
    MSpec.register_mode :verify
  end
  on("-O", "--report", "Report guarded specs") do
    MSpec.register_mode :report
  end
end

#version(version, &block) ⇒ Object

Convenience method for providing -v, –version options.



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# File 'lib/mspec/utils/options.rb', line 169

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