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  • rdoc/rdoc.rb
  • rdoc/text.rb
  • rdoc/token_stream.rb

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RDoc::RDoc

This is the driver for generating RDoc output. It handles file parsing and generation of output.

To use this class to generate RDoc output via the API, the recommended way is:

rdoc = RDoc::RDoc.new
options = rdoc.load_options # returns an RDoc::Options instance
# set extra options
rdoc.document options

You can also generate output like the rdoc executable:

rdoc = RDoc::RDoc.new
rdoc.document argv

Where argv is an array of strings, each corresponding to an argument you’d give rdoc on the command line. See <tt>rdoc –help<tt> for details.

Constants

GENERATORS

This is the list of supported output generators

Attributes

exclude[RW]

File pattern to exclude

generator[RW]

Generator instance used for creating output

last_modified[R]

Hash of files and their last modified times.

options[RW]

RDoc options

stats[R]

Accessor for statistics. Available after each call to #parse_files

store[R]

The current documentation store

Public Class Methods

add_generator(klass) click to toggle source

Add klass that can generate output after parsing

 
               # File rdoc/rdoc.rb, line 70
def self.add_generator(klass)
  name = klass.name.sub(/^RDoc::Generator::/, '').downcase
  GENERATORS[name] = klass
end
            
current() click to toggle source

Active RDoc::RDoc instance

 
               # File rdoc/rdoc.rb, line 78
def self.current
  @current
end
            
current=(rdoc) click to toggle source

Sets the active RDoc::RDoc instance

 
               # File rdoc/rdoc.rb, line 85
def self.current= rdoc
  @current = rdoc
end
            
new() click to toggle source

Creates a new RDoc::RDoc instance. Call document to parse files and generate documentation.

 
               # File rdoc/rdoc.rb, line 93
def initialize
  @current       = nil
  @exclude       = nil
  @generator     = nil
  @last_modified = {}
  @old_siginfo   = nil
  @options       = nil
  @stats         = nil
  @store         = nil
end
            

Public Instance Methods

document(options) click to toggle source

Generates documentation or a coverage report depending upon the settings in options.

options can be either an RDoc::Options instance or an array of strings equivalent to the strings that would be passed on the command line like %w[-q -o doc -t My\ Doc\ Title]. document will automatically call RDoc::Options#finish if an options instance was given.

For a list of options, see either RDoc::Options or rdoc --help.

By default, output will be stored in a directory called “doc” below the current directory, so make sure you’re somewhere writable before invoking.

 
               # File rdoc/rdoc.rb, line 456
def document options
  self.store = RDoc::Store.new

  if RDoc::Options === options then
    @options = options
    @options.finish
  else
    @options = load_options
    @options.parse options
  end

  if @options.pipe then
    handle_pipe
    exit
  end

  @exclude = @options.exclude

  unless @options.coverage_report then
    @last_modified = setup_output_dir @options.op_dir, @options.force_update
  end

  @store.encoding = @options.encoding if @options.respond_to? :encoding
  @store.dry_run  = @options.dry_run
  @store.main     = @options.main_page
  @store.title    = @options.title
  @store.path     = @options.op_dir

  @start_time = Time.now

  @store.load_cache

  file_info = parse_files @options.files

  @options.default_title = "RDoc Documentation"

  @store.complete @options.visibility

  @stats.coverage_level = @options.coverage_report

  if @options.coverage_report then
    puts

    puts @stats.report.accept RDoc::Markup::ToRdoc.new
  elsif file_info.empty? then
    $stderr.puts "\nNo newer files." unless @options.quiet
  else
    gen_klass = @options.generator

    @generator = gen_klass.new @store, @options

    generate
  end

  if @stats and (@options.coverage_report or not @options.quiet) then
    puts
    puts @stats.summary.accept RDoc::Markup::ToRdoc.new
  end

  exit @stats.fully_documented? if @options.coverage_report
end
            
error(msg) click to toggle source

Report an error message and exit

 
               # File rdoc/rdoc.rb, line 107
def error(msg)
  raise RDoc::Error, msg
end
            
gather_files(files) click to toggle source

Gathers a set of parseable files from the files and directories listed in files.

 
               # File rdoc/rdoc.rb, line 115
def gather_files files
  files = ["."] if files.empty?

  file_list = normalized_file_list files, true, @exclude

  file_list = file_list.uniq

  file_list = remove_unparseable file_list

  file_list.sort
end
            
generate() click to toggle source

Generates documentation for file_info (from parse_files) into the output dir using the generator selected by the RDoc options

 
               # File rdoc/rdoc.rb, line 523
def generate
  Dir.chdir @options.op_dir do
    unless @options.quiet then
      $stderr.puts "\nGenerating #{@generator.class.name.sub(/^.*::/, '')} format into #{Dir.pwd}..."
    end

    @generator.generate
    update_output_dir '.', @start_time, @last_modified
  end
end
            
handle_pipe() click to toggle source

Turns RDoc from stdin into HTML

 
               # File rdoc/rdoc.rb, line 130
def handle_pipe
  @html = RDoc::Markup::ToHtml.new @options

  parser = RDoc::Text::MARKUP_FORMAT[@options.markup]

  document = parser.parse $stdin.read

  out = @html.convert document

  $stdout.write out
end
            
install_siginfo_handler() click to toggle source

Installs a siginfo handler that prints the current filename.

 
               # File rdoc/rdoc.rb, line 145
def install_siginfo_handler
  return unless Signal.list.include? 'INFO'

  @old_siginfo = trap 'INFO' do
    puts @current if @current
  end
end
            
list_files_in_directory(dir) click to toggle source

Return a list of the files to be processed in a directory. We know that this directory doesn’t have a .document file, so we’re looking for real files. However we may well contain subdirectories which must be tested for .document files.

 
               # File rdoc/rdoc.rb, line 329
def list_files_in_directory dir
  files = Dir.glob File.join(dir, "*")

  normalized_file_list files, false, @options.exclude
end
            
load_options() click to toggle source

Loads options from .rdoc_options if the file exists, otherwise creates a new RDoc::Options instance.

 
               # File rdoc/rdoc.rb, line 157
def load_options
  options_file = File.expand_path '.rdoc_options'
  return RDoc::Options.new unless File.exist? options_file

  RDoc.load_yaml

  parse_error = if Object.const_defined? :Psych then
                  Psych::SyntaxError
                else
                  ArgumentError
                end

  begin
    options = YAML.load_file '.rdoc_options'
  rescue *parse_error
  end

  raise RDoc::Error, "#{options_file} is not a valid rdoc options file" unless
    RDoc::Options === options

  options
end
            
normalized_file_list(relative_files, force_doc = false, exclude_pattern = nil) click to toggle source

Given a list of files and directories, create a list of all the Ruby files they contain.

If force_doc is true we always add the given files, if false, only add files that we guarantee we can parse. It is true when looking at files given on the command line, false when recursing through subdirectories.

The effect of this is that if you want a file with a non-standard extension parsed, you must name it explicitly.

 
               # File rdoc/rdoc.rb, line 287
def normalized_file_list(relative_files, force_doc = false,
                         exclude_pattern = nil)
  file_list = []

  relative_files.each do |rel_file_name|
    next if rel_file_name.end_with? 'created.rid'
    next if exclude_pattern && exclude_pattern =~ rel_file_name
    stat = File.stat rel_file_name rescue next

    case type = stat.ftype
    when "file" then
      next if last_modified = @last_modified[rel_file_name] and
              stat.mtime.to_i <= last_modified.to_i

      if force_doc or RDoc::Parser.can_parse(rel_file_name) then
        file_list << rel_file_name.sub(/^\.\//, '')
        @last_modified[rel_file_name] = stat.mtime
      end
    when "directory" then
      next if rel_file_name == "CVS" || rel_file_name == ".svn"

      dot_doc = File.join rel_file_name, RDoc::DOT_DOC_FILENAME

      if File.file? dot_doc then
        file_list << parse_dot_doc_file(rel_file_name, dot_doc)
      else
        file_list << list_files_in_directory(rel_file_name)
      end
    else
      warn "rdoc can't parse the #{type} #{rel_file_name}"
    end
  end

  file_list.flatten
end
            
output_flag_file(op_dir) click to toggle source

Return the path name of the flag file in an output directory.

 
               # File rdoc/rdoc.rb, line 252
def output_flag_file(op_dir)
  File.join op_dir, "created.rid"
end
            
parse_dot_doc_file(in_dir, filename) click to toggle source

The .document file contains a list of file and directory name patterns, representing candidates for documentation. It may also contain comments (starting with ‘#’)

 
               # File rdoc/rdoc.rb, line 261
def parse_dot_doc_file in_dir, filename
  # read and strip comments
  patterns = File.read(filename).gsub(/#.*/, '')

  result = []

  patterns.split.each do |patt|
    candidates = Dir.glob(File.join(in_dir, patt))
    result.concat normalized_file_list(candidates)
  end

  result
end
            
parse_file(filename) click to toggle source

Parses filename and returns an RDoc::TopLevel

 
               # File rdoc/rdoc.rb, line 338
  def parse_file filename
    if defined?(Encoding) then
      encoding = @options.encoding
      filename = filename.encode encoding
    end

    @stats.add_file filename

    return if RDoc::Parser.binary? filename

    content = RDoc::Encoding.read_file filename, encoding

    return unless content

    filename_path = Pathname(filename).expand_path
    relative_path = filename_path.relative_path_from @options.root

    if @options.page_dir and
       relative_path.to_s.start_with? @options.page_dir.to_s then
      relative_path =
        relative_path.relative_path_from @options.page_dir
    end

    top_level = @store.add_file filename, relative_path.to_s

    parser = RDoc::Parser.for top_level, filename, content, @options, @stats

    return unless parser

    parser.scan

    # restart documentation for the classes & modules found
    top_level.classes_or_modules.each do |cm|
      cm.done_documenting = false
    end

    top_level

  rescue Errno::EACCES => e
    $stderr.puts <<-EOF
Unable to read #{filename}, #{e.message}

Please check the permissions for this file.  Perhaps you do not have access to
it or perhaps the original author's permissions are to restrictive.  If the
this is not your library please report a bug to the author.
    EOF
  rescue => e
    $stderr.puts <<-EOF
Before reporting this, could you check that the file you're documenting
has proper syntax:

  #{Gem.ruby} -c #{filename}

RDoc is not a full Ruby parser and will fail when fed invalid ruby programs.

The internal error was:

\t(#{e.class}) #{e.message}

    EOF

    $stderr.puts e.backtrace.join("\n\t") if $DEBUG_RDOC

    raise e
    nil
  end
            
parse_files(files) click to toggle source

Parse each file on the command line, recursively entering directories.

 
               # File rdoc/rdoc.rb, line 408
def parse_files files
  file_list = gather_files files
  @stats = RDoc::Stats.new @store, file_list.length, @options.verbosity

  return [] if file_list.empty?

  file_info = []

  @stats.begin_adding

  file_info = file_list.map do |filename|
    @current = filename
    parse_file filename
  end.compact

  @stats.done_adding

  file_info
end
            
remove_siginfo_handler() click to toggle source

Removes a siginfo handler and replaces the previous

 
               # File rdoc/rdoc.rb, line 537
def remove_siginfo_handler
  return unless Signal.list.key? 'INFO'

  handler = @old_siginfo || 'DEFAULT'

  trap 'INFO', handler
end
            
remove_unparseable(files) click to toggle source

Removes file extensions known to be unparseable from files and TAGS files for emacs and vim.

 
               # File rdoc/rdoc.rb, line 432
def remove_unparseable files
  files.reject do |file|
    file =~ /\.(?:class|eps|erb|scpt\.txt|ttf|yml)$/ or
      (file =~ /tags$/ and
       open(file, 'rb') { |io|
         io.read(100) =~ /\A(\f\n[^,]+,\d+$|!_TAG_)/
       })
  end
end
            
setup_output_dir(dir, force) click to toggle source

Create an output dir if it doesn’t exist. If it does exist, but doesn’t contain the flag file created.rid then we refuse to use it, as we may clobber some manually generated documentation

 
               # File rdoc/rdoc.rb, line 185
  def setup_output_dir(dir, force)
    flag_file = output_flag_file dir

    last = {}

    if @options.dry_run then
      # do nothing
    elsif File.exist? dir then
      error "#{dir} exists and is not a directory" unless File.directory? dir

      begin
        open flag_file do |io|
          unless force then
            Time.parse io.gets

            io.each do |line|
              file, time = line.split "\t", 2
              time = Time.parse(time) rescue next
              last[file] = time
            end
          end
        end
      rescue SystemCallError, TypeError
        error <<-ERROR

Directory #{dir} already exists, but it looks like it isn't an RDoc directory.

Because RDoc doesn't want to risk destroying any of your existing files,
you'll need to specify a different output directory name (using the --op <dir>
option)

        ERROR
      end unless @options.force_output
    else
      FileUtils.mkdir_p dir
      FileUtils.touch flag_file
    end

    last
  end
            
store=(store) click to toggle source

Sets the current documentation tree to store and sets the store’s rdoc driver to this instance.

 
               # File rdoc/rdoc.rb, line 230
def store= store
  @store = store
  @store.rdoc = self
end
            
update_output_dir(op_dir, time, last = {}) click to toggle source

Update the flag file in an output directory.

 
               # File rdoc/rdoc.rb, line 238
def update_output_dir(op_dir, time, last = {})
  return if @options.dry_run or not @options.update_output_dir

  open output_flag_file(op_dir), "w" do |f|
    f.puts time.rfc2822
    last.each do |n, t|
      f.puts "#{n}\t#{t.rfc2822}"
    end
  end
end
            

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