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  • rdoc/options.rb

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RDoc::Options

RDoc::Options handles the parsing and storage of options

Saved Options

You can save some options like the markup format in the .rdoc_options file in your gem. The easiest way to do this is:

rdoc --markup tomdoc --write-options

Which will automatically create the file and fill it with the options you specified.

The following options will not be saved since they interfere with the user’s preferences or with the normal operation of RDoc:

  • --coverage-report

  • --dry-run

  • --encoding

  • --force-update

  • --format

  • --pipe

  • --quiet

  • --template

  • --verbose

Custom Options

Generators can hook into RDoc::Options to add generator-specific command line options.

When --format is encountered in ARGV, RDoc calls ::setup_options on the generator class to add extra options to the option parser. Options for custom generators must occur after --format. rdoc --help will list options for all installed generators.

Example:

class RDoc::Generator::Spellcheck
  RDoc::RDoc.add_generator self

  def self.setup_options rdoc_options
    op = rdoc_options.option_parser

    op.on('--spell-dictionary DICTIONARY',
          RDoc::Options::Path) do |dictionary|
      rdoc_options.spell_dictionary = dictionary
    end
  end
end

Option Validators

OptionParser validators will validate and cast user input values. In addition to the validators that ship with OptionParser (String, Integer, Float, TrueClass, FalseClass, Array, Regexp, Date, Time, URI, etc.), RDoc::Options adds Path, PathArray and Template.

Constants

DEPRECATED

The deprecated options.

Directory

Option validator for OptionParser that matches a directory that exists on the filesystem.

Path

Option validator for OptionParser that matches a file or directory that exists on the filesystem.

PathArray

Option validator for OptionParser that matches a comma-separated list of files or directories that exist on the filesystem.

SPECIAL

RDoc options ignored (or handled specially) by --write-options

Template

Option validator for OptionParser that matches a template directory for an installed generator that lives in "rdoc/generator/template/#{template_name}"

Attributes

charset[RW]

Character-set for HTML output. encoding is preferred over charset

coverage_report[RW]

If true, only report on undocumented files

dry_run[RW]

If true, RDoc will not write any files.

encoding[RW]

The output encoding. All input files will be transcoded to this encoding.

The default encoding is UTF-8. This is set via –encoding.

exclude[RW]

Files matching this pattern will be excluded

files[RW]

The list of files to be processed

force_output[RW]

Create the output even if the output directory does not look like an rdoc output directory

force_update[RW]

Scan newer sources than the flag file if true.

formatter[RW]

Formatter to mark up text with

generator[RW]

Description of the output generator (set with the --format option)

generator_options[RW]

Loaded generator options. Used to prevent –help from loading the same options multiple times.

line_numbers[RW]

Include line numbers in the source code

main_page[RW]

Name of the file, class or module to display in the initial index page (if not specified the first file we encounter is used)

markup[RW]

The default markup format. The default is ‘rdoc’. ‘markdown’, ‘tomdoc’ and ‘rd’ are also built-in.

op_dir[RW]

The name of the output directory

option_parser[RW]

The OptionParser for this instance

page_dir[RW]

Directory where guides, FAQ, and other pages not associated with a class live. You may leave this unset if these are at the root of your project.

pipe[RW]

Is RDoc in pipe mode?

rdoc_include[RW]

Array of directories to search for files to satisfy an :include:

root[RW]

Root of the source documentation will be generated for. Set this when building documentation outside the source directory. Defaults to the current directory.

show_hash[RW]

Include the ‘#’ at the front of hyperlinked instance method names

static_path[RW]

Directory to copy static files from

tab_width[RW]

The number of columns in a tab

template[RW]

Template to be used when generating output

template_dir[RW]

Directory the template lives in

title[RW]

Documentation title

update_output_dir[RW]

Should RDoc update the timestamps in the output dir?

verbosity[RW]

Verbosity, zero means quiet

visibility[RW]

Minimum visibility of a documented method. One of :public, :protected, :private. May be overridden on a per-method basis with the :doc: directive.

webcvs[RW]

URL of web cvs frontend

Public Instance Methods

check_files() click to toggle source

Check that the files on the command line exist

 
               # File rdoc/options.rb, line 405
def check_files
  @files.delete_if do |file|
    if File.exist? file then
      if File.readable? file then
        false
      else
        warn "file '#{file}' not readable"

        true
      end
    else
      warn "file '#{file}' not found"

      true
    end
  end
end
            
check_generator() click to toggle source

Ensure only one generator is loaded

 
               # File rdoc/options.rb, line 426
def check_generator
  if @generator then
    raise OptionParser::InvalidOption,
      "generator already set to #{@generator_name}"
  end
end
            
default_title=(string) click to toggle source

Set the title, but only if not already set. Used to set the title from a source file, so that a title set from the command line will have the priority.

 
               # File rdoc/options.rb, line 438
def default_title=(string)
  @title ||= string
end
            
finish() click to toggle source

Completes any unfinished option setup business such as filtering for existent files, creating a regexp for exclude and setting a default template.

 
               # File rdoc/options.rb, line 465
def finish
  @op_dir ||= 'doc'

  @rdoc_include << "." if @rdoc_include.empty?

  if @exclude.nil? or Regexp === @exclude then
    # done, #finish is being re-run
  elsif @exclude.empty? then
    @exclude = nil
  else
    @exclude = Regexp.new(@exclude.join("|"))
  end

  finish_page_dir

  check_files

  # If no template was specified, use the default template for the output
  # formatter

  unless @template then
    @template     = @generator_name
    @template_dir = template_dir_for @template
  end

  self
end
            
finish_page_dir() click to toggle source

Fixes the #page_dir to be relative to the root_dir and adds the #page_dir to the files list.

 
               # File rdoc/options.rb, line 497
def finish_page_dir
  return unless @page_dir

  @files << @page_dir.to_s

  page_dir = @page_dir.expand_path.relative_path_from @root

  @page_dir = page_dir
end
            
generator_descriptions() click to toggle source

Returns a properly-space list of generators and their descriptions.

 
               # File rdoc/options.rb, line 510
def generator_descriptions
  lengths = []

  generators = RDoc::RDoc::GENERATORS.map do |name, generator|
    lengths << name.length

    description = generator::DESCRIPTION if
      generator.const_defined? :DESCRIPTION

    [name, description]
  end

  longest = lengths.max

  generators.sort.map do |name, description|
    if description then
      "  %-*s - %s" % [longest, name, description]
    else
      "  #{name}"
    end
  end.join "\n"
end
            
parse(argv) click to toggle source

Parses command line options.

 
               # File rdoc/options.rb, line 536
  def parse argv
    ignore_invalid = true

    argv.insert(0, *ENV['RDOCOPT'].split) if ENV['RDOCOPT']

    opts = OptionParser.new do |opt|
      @option_parser = opt
      opt.program_name = File.basename $0
      opt.version = RDoc::VERSION
      opt.release = nil
      opt.summary_indent = ' ' * 4
      opt.banner = <<-EOF
Usage: #{opt.program_name} [options] [names...]

  Files are parsed, and the information they contain collected, before any
  output is produced. This allows cross references between all files to be
  resolved. If a name is a directory, it is traversed. If no names are
  specified, all Ruby files in the current directory (and subdirectories) are
  processed.

  How RDoc generates output depends on the output formatter being used, and on
  the options you give.

  Options can be specified via the RDOCOPT environment variable, which
  functions similar to the RUBYOPT environment variable for ruby.

    $ export RDOCOPT="--show-hash"

  will make rdoc show hashes in method links by default.  Command-line options
  always will override those in RDOCOPT.

  Available formatters:

#{generator_descriptions}

  RDoc understands the following file formats:

      EOF

      parsers = Hash.new { |h,parser| h[parser] = [] }

      RDoc::Parser.parsers.each do |regexp, parser|
        parsers[parser.name.sub('RDoc::Parser::', '')] << regexp.source
      end

      parsers.sort.each do |parser, regexp|
        opt.banner << "  - #{parser}: #{regexp.join ', '}\n"
      end

      opt.banner << "\n  The following options are deprecated:\n\n"

      name_length = DEPRECATED.keys.sort_by { |k| k.length }.last.length

      DEPRECATED.sort_by { |k,| k }.each do |name, reason|
        opt.banner << "    %*1$2$s  %3$s\n" % [-name_length, name, reason]
      end

      opt.accept Template do |template|
        template_dir = template_dir_for template

        unless template_dir then
          $stderr.puts "could not find template #{template}"
          nil
        else
          [template, template_dir]
        end
      end

      opt.accept Directory do |directory|
        directory = File.expand_path directory

        raise OptionParser::InvalidArgument unless File.directory? directory

        directory
      end

      opt.accept Path do |path|
        path = File.expand_path path

        raise OptionParser::InvalidArgument unless File.exist? path

        path
      end

      opt.accept PathArray do |paths,|
        paths = if paths then
                  paths.split(',').map { |d| d unless d.empty? }
                end

        paths.map do |path|
          path = File.expand_path path

          raise OptionParser::InvalidArgument unless File.exist? path

          path
        end
      end

      opt.separator nil
      opt.separator "Parsing options:"
      opt.separator nil

      if Object.const_defined? :Encoding then
        opt.on("--encoding=ENCODING", "-e", Encoding.list.map { |e| e.name },
               "Specifies the output encoding.  All files",
               "read will be converted to this encoding.",
               "The default encoding is UTF-8.",
               "--encoding is preferred over --charset") do |value|
                 @encoding = Encoding.find value
                 @charset = @encoding.name # may not be valid value
               end

        opt.separator nil
      end

      opt.on("--all", "-a",
             "Synonym for --visibility=private.") do |value|
        @visibility = :private
      end

      opt.separator nil

      opt.on("--exclude=PATTERN", "-x", Regexp,
             "Do not process files or directories",
             "matching PATTERN.") do |value|
        @exclude << value
      end

      opt.separator nil

      opt.on("--extension=NEW=OLD", "-E",
             "Treat files ending with .new as if they",
             "ended with .old. Using '-E cgi=rb' will",
             "cause xxx.cgi to be parsed as a Ruby file.") do |value|
        new, old = value.split(/=/, 2)

        unless new and old then
          raise OptionParser::InvalidArgument, "Invalid parameter to '-E'"
        end

        unless RDoc::Parser.alias_extension old, new then
          raise OptionParser::InvalidArgument, "Unknown extension .#{old} to -E"
        end
      end

      opt.separator nil

      opt.on("--[no-]force-update", "-U",
             "Forces rdoc to scan all sources even if",
             "newer than the flag file.") do |value|
        @force_update = value
      end

      opt.separator nil

      opt.on("--pipe", "-p",
             "Convert RDoc on stdin to HTML") do
        @pipe = true
      end

      opt.separator nil

      opt.on("--tab-width=WIDTH", "-w", OptionParser::DecimalInteger,
             "Set the width of tab characters.") do |value|
        @tab_width = value
      end

      opt.separator nil

      opt.on("--visibility=VISIBILITY", "-V", RDoc::VISIBILITIES,
             "Minimum visibility to document a method.",
             "One of 'public', 'protected' (the default)",
             "or 'private'. Can be abbreviated.") do |value|
        @visibility = value
      end

      opt.separator nil

      markup_formats = RDoc::Text::MARKUP_FORMAT.keys.sort

      opt.on("--markup=MARKUP", markup_formats,
             "The markup format for the named files.",
             "The default is rdoc.  Valid values are:",
             markup_formats.join(', ')) do |value|
        @markup = value
      end

      opt.separator nil

      opt.on("--root=ROOT", Directory,
             "Root of the source tree documentation",
             "will be generated for.  Set this when",
             "building documentation outside the",
             "source directory.  Default is the",
             "current directory.") do |root|
        @root = Pathname(root)
      end

      opt.separator nil

      opt.on("--page-dir=DIR", Directory,
             "Directory where guides, your FAQ or",
             "other pages not associated with a class",
             "live.  Set this when you don't store",
             "such files at your project root.",
             "NOTE: Do not use the same file name in",
             "the page dir and the root of your project") do |page_dir|
        @page_dir = Pathname(page_dir)
      end

      opt.separator nil
      opt.separator "Common generator options:"
      opt.separator nil

      opt.on("--force-output", "-O",
             "Forces rdoc to write the output files,",
             "even if the output directory exists",
             "and does not seem to have been created",
             "by rdoc.") do |value|
        @force_output = value
      end

      opt.separator nil

      generator_text = @generators.keys.map { |name| "  #{name}" }.sort

      opt.on("-f", "--fmt=FORMAT", "--format=FORMAT", @generators.keys,
             "Set the output formatter.  One of:", *generator_text) do |value|
        check_generator

        @generator_name = value.downcase
        setup_generator
      end

      opt.separator nil

      opt.on("--include=DIRECTORIES", "-i", PathArray,
             "Set (or add to) the list of directories to",
             "be searched when satisfying :include:",
             "requests. Can be used more than once.") do |value|
        @rdoc_include.concat value.map { |dir| dir.strip }
      end

      opt.separator nil

      opt.on("--[no-]coverage-report=[LEVEL]", "--[no-]dcov", "-C", Integer,
             "Prints a report on undocumented items.",
             "Does not generate files.") do |value|
        value = 0 if value.nil? # Integer converts -C to nil

        @coverage_report = value
        @force_update = true if value
      end

      opt.separator nil

      opt.on("--output=DIR", "--op", "-o",
             "Set the output directory.") do |value|
        @op_dir = value
      end

      opt.separator nil

      opt.on("-d",
             "Deprecated --diagram option.",
             "Prevents firing debug mode",
             "with legacy invocation.") do |value|
      end

      opt.separator nil
      opt.separator 'HTML generator options:'
      opt.separator nil

      opt.on("--charset=CHARSET", "-c",
             "Specifies the output HTML character-set.",
             "Use --encoding instead of --charset if",
             "available.") do |value|
        @charset = value
      end

      opt.separator nil

      opt.on("--hyperlink-all", "-A",
             "Generate hyperlinks for all words that",
             "correspond to known methods, even if they",
             "do not start with '#' or '::' (legacy",
             "behavior).") do |value|
        @hyperlink_all = value
      end

      opt.separator nil

      opt.on("--main=NAME", "-m",
             "NAME will be the initial page displayed.") do |value|
        @main_page = value
      end

      opt.separator nil

      opt.on("--[no-]line-numbers", "-N",
             "Include line numbers in the source code.",
             "By default, only the number of the first",
             "line is displayed, in a leading comment.") do |value|
        @line_numbers = value
      end

      opt.separator nil

      opt.on("--show-hash", "-H",
             "A name of the form #name in a comment is a",
             "possible hyperlink to an instance method",
             "name. When displayed, the '#' is removed",
             "unless this option is specified.") do |value|
        @show_hash = value
      end

      opt.separator nil

      opt.on("--template=NAME", "-T", Template,
             "Set the template used when generating",
             "output. The default depends on the",
             "formatter used.") do |(template, template_dir)|
        @template     = template
        @template_dir = template_dir
      end

      opt.separator nil

      opt.on("--title=TITLE", "-t",
             "Set TITLE as the title for HTML output.") do |value|
        @title = value
      end

      opt.separator nil

      opt.on("--copy-files=PATH", Path,
             "Specify a file or directory to copy static",
             "files from.",
             "If a file is given it will be copied into",
             "the output dir.  If a directory is given the",
             "entire directory will be copied.",
             "You can use this multiple times") do |value|
        @static_path << value
      end

      opt.separator nil

      opt.on("--webcvs=URL", "-W",
             "Specify a URL for linking to a web frontend",
             "to CVS. If the URL contains a '\%s', the",
             "name of the current file will be",
             "substituted; if the URL doesn't contain a",
             "'\%s', the filename will be appended to it.") do |value|
        @webcvs = value
      end

      opt.separator nil
      opt.separator "ri generator options:"
      opt.separator nil

      opt.on("--ri", "-r",
             "Generate output for use by `ri`. The files",
             "are stored in the '.rdoc' directory under",
             "your home directory unless overridden by a",
             "subsequent --op parameter, so no special",
             "privileges are needed.") do |value|
        check_generator

        @generator_name = "ri"
        @op_dir ||= RDoc::RI::Paths::HOMEDIR
        setup_generator
      end

      opt.separator nil

      opt.on("--ri-site", "-R",
             "Generate output for use by `ri`. The files",
             "are stored in a site-wide directory,",
             "making them accessible to others, so",
             "special privileges are needed.") do |value|
        check_generator

        @generator_name = "ri"
        @op_dir = RDoc::RI::Paths::SITEDIR
        setup_generator
      end

      opt.separator nil
      opt.separator "Generic options:"
      opt.separator nil

      opt.on("--write-options",
             "Write .rdoc_options to the current",
             "directory with the given options.  Not all",
             "options will be used.  See RDoc::Options",
             "for details.") do |value|
        @write_options = true
      end

      opt.separator nil

      opt.on("--[no-]dry-run",
             "Don't write any files") do |value|
        @dry_run = value
      end

      opt.separator nil

      opt.on("-D", "--[no-]debug",
             "Displays lots on internal stuff.") do |value|
        $DEBUG_RDOC = value
      end

      opt.separator nil

      opt.on("--[no-]ignore-invalid",
             "Ignore invalid options and continue",
             "(default true).") do |value|
        ignore_invalid = value
      end

      opt.separator nil

      opt.on("--quiet", "-q",
             "Don't show progress as we parse.") do |value|
        @verbosity = 0
      end

      opt.separator nil

      opt.on("--verbose", "-v",
             "Display extra progress as RDoc parses") do |value|
        @verbosity = 2
      end

      opt.separator nil

      opt.on("--help",
             "Display this help") do
        RDoc::RDoc::GENERATORS.each_key do |generator|
          setup_generator generator
        end

        puts opt.help
        exit
      end

      opt.separator nil
    end

    setup_generator 'darkfish' if
      argv.grep(/\A(-f|--fmt|--format|-r|-R|--ri|--ri-site)\b/).empty?

    deprecated = []
    invalid = []

    begin
      opts.parse! argv
    rescue OptionParser::InvalidArgument, OptionParser::InvalidOption => e
      if DEPRECATED[e.args.first] then
        deprecated << e.args.first
      elsif %w[--format --ri -r --ri-site -R].include? e.args.first then
        raise
      else
        invalid << e.args.join(' ')
      end

      retry
    end

    unless @generator then
      @generator = RDoc::Generator::Darkfish
      @generator_name = 'darkfish'
    end

    if @pipe and not argv.empty? then
      @pipe = false
      invalid << '-p (with files)'
    end

    unless quiet then
      deprecated.each do |opt|
        $stderr.puts 'option ' << opt << ' is deprecated: ' << DEPRECATED[opt]
      end

      unless invalid.empty? then
        invalid = "invalid options: #{invalid.join ', '}"

        if ignore_invalid then
          $stderr.puts invalid
          $stderr.puts '(invalid options are ignored)'
        else
          $stderr.puts opts
          $stderr.puts invalid
          exit 1
        end
      end
    end

    @files = argv.dup

    finish

    if @write_options then
      write_options
      exit
    end

    self
  end
            
quiet() click to toggle source

Don’t display progress as we process the files

 
               # File rdoc/options.rb, line 1050
def quiet
  @verbosity.zero?
end
            
quiet=(bool) click to toggle source

Set quietness to bool

 
               # File rdoc/options.rb, line 1057
def quiet= bool
  @verbosity = bool ? 0 : 1
end
            
sanitize_path(path) click to toggle source

Removes directories from path that are outside the current directory

 
               # File rdoc/options.rb, line 1064
def sanitize_path path
  require 'pathname'
  dot = Pathname.new('.').expand_path

  path.reject do |item|
    path = Pathname.new(item).expand_path
    relative = path.relative_path_from(dot).to_s
    relative.start_with? '..'
  end
end
            
setup_generator(generator_name = @generator_name) click to toggle source

Set up an output generator for the named generator_name.

If the found generator responds to :setup_options it will be called with the options instance. This allows generators to add custom options or set default options.

 
               # File rdoc/options.rb, line 1082
def setup_generator generator_name = @generator_name
  @generator = @generators[generator_name]

  unless @generator then
    raise OptionParser::InvalidArgument,
          "Invalid output formatter #{generator_name}"
  end

  return if @generator_options.include? @generator

  @generator_name = generator_name
  @generator_options << @generator

  if @generator.respond_to? :setup_options then
    @option_parser ||= OptionParser.new
    @generator.setup_options self
  end
end
            
template_dir_for(template) click to toggle source

Finds the template dir for template

 
               # File rdoc/options.rb, line 1104
def template_dir_for template
  template_path = File.join 'rdoc', 'generator', 'template', template

  $LOAD_PATH.map do |path|
    File.join File.expand_path(path), template_path
  end.find do |dir|
    File.directory? dir
  end
end
            
warn(message) click to toggle source

Displays a warning using Kernel#warn if we’re being verbose

 
               # File rdoc/options.rb, line 1130
def warn message
  super message if @verbosity > 1
end
            
write_options() click to toggle source

Writes the YAML file .rdoc_options to the current directory containing the parsed options.

 
               # File rdoc/options.rb, line 1138
def write_options
  RDoc.load_yaml

  open '.rdoc_options', 'w' do |io|
    io.set_encoding Encoding::UTF_8 if Object.const_defined? :Encoding

    YAML.dump self, io
  end
end
            

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