# class RDoc::Task

`RDoc::Task` creates the following rake tasks to generate and clean up `RDoc` output:

rdoc

  Main task for this `RDoc` task.

clobber_rdoc

  Delete all the rdoc files. This target is automatically added to the main clobber target.

rerdoc

  Rebuild the rdoc files from scratch, even if they are not out of date.

rdoc:coverage

  Print `RDoc` coverage report for all rdoc files.

Simple Example:

    require 'rdoc/task'

    RDoc::Task.new do |rdoc|
      rdoc.main = "README.rdoc"
      rdoc.rdoc_files.include("README.rdoc", "lib/**/*.rb")
    end

The `rdoc` object passed to the block is an `RDoc::Task` object. See the attributes list for the `RDoc::Task` class for available customization options.

## Specifying different task names¶ ↑

You may wish to give the task a different name, such as if you are generating two sets of documentation. For instance, if you want to have a development set of documentation including private methods:

    require 'rdoc/task'

    RDoc::Task.new :rdoc_dev do |rdoc|
      rdoc.main = "README.rdoc"
      rdoc.rdoc_files.include("README.rdoc", "lib/**/*.rb")
      rdoc.options << "--all"
    end

The tasks would then be named :rdoc_dev, :clobber_rdoc_dev, and :rerdoc_dev.

If you wish to have completely different task names, then pass a `Hash` as first argument. With the `:rdoc`, `:clobber_rdoc` and `:rerdoc` options, you can customize the task names to your liking.

For example:

    require 'rdoc/task'

    RDoc::Task.new(:rdoc => "rdoc", :clobber_rdoc => "rdoc:clean",
                   :rerdoc => "rdoc:force")

This will create the tasks `:rdoc`, `:rdoc:clean`, `:rdoc:force`, and `:rdoc:coverage`.

### Attributes

external [RW]

Whether to run the rdoc process as an external shell (default is false)

generator [RW]

Name of format generator (`--format`) used by rdoc. (defaults to rdoc’s default)

main [RW]

Name of file to be used as the main, top level file of the `RDoc`. (default is none)

markup [RW]

The markup format; one of: `rdoc` (the default), `markdown`, `rd`, `tomdoc`. See Markup Formats.

name [RW]

Name of the main, top level task. (default is :rdoc)

options [RW]

Additional list of options to be passed rdoc. (default is [])

rdoc_dir [RW]

Name of directory to receive the html output files. (default is “html”)

rdoc_files [RW]

List of files to be included in the rdoc generation. (default is [])

template [RW]

Name of template to be used by rdoc. (defaults to rdoc’s default)

title [RW]

Title of `RDoc` documentation. (defaults to rdoc’s default)

### Public Class Methods

new (name = :rdoc) { |self| ... }
Source

    # File lib/rdoc/task.rb, line 157
    def initialize name = :rdoc # :yield: self
      defaults

      check_names name

      @name = name

      yield self if block_given?

      define
    end

Create an `RDoc` task with the given name. See the `RDoc::Task` class overview for documentation.

### Public Instance Methods

before_running_rdoc (&block)
Source

    # File lib/rdoc/task.rb, line 287
    def before_running_rdoc(&block)
      @before_running_rdoc = block
    end

The block passed to this method will be called just before running the `RDoc` generator. It is allowed to modify `RDoc::Task` attributes inside the block.

check_names (names)
Source

    # File lib/rdoc/task.rb, line 173
    def check_names names
      return unless Hash === names

      invalid_options =
        names.keys.map { |k| k.to_sym } - [:rdoc, :clobber_rdoc, :rerdoc]

      unless invalid_options.empty? then
        raise ArgumentError, "invalid options: #{invalid_options.join ', '}"
      end
    end

Ensures that `names` only includes names for the :rdoc, :clobber_rdoc and :rerdoc. If other names are given an `ArgumentError` is raised.

clobber_task_description ()
Source

    # File lib/rdoc/task.rb, line 187
    def clobber_task_description
      "Remove RDoc HTML files"
    end

`Task` description for the clobber rdoc task or its renamed equivalent

coverage_task_description ()
Source

    # File lib/rdoc/task.rb, line 308
    def coverage_task_description
      "Print RDoc coverage report"
    end

`Task` description for the coverage task or its renamed description

defaults ()
Source

    # File lib/rdoc/task.rb, line 194
    def defaults
      @name = :rdoc
      @rdoc_files = Rake::FileList.new
      @rdoc_dir = 'html'
      @main = nil
      @title = nil
      @template = nil
      @generator = nil
      @options = []
    end

Sets default task values

define ()
Source

    # File lib/rdoc/task.rb, line 223
    def define
      desc rdoc_task_description
      task rdoc_task_name

      desc rerdoc_task_description
      task rerdoc_task_name => [clobber_task_name, rdoc_task_name]

      desc clobber_task_description
      task clobber_task_name do
        rm_r @rdoc_dir rescue nil
      end

      task :clobber => [clobber_task_name]

      directory @rdoc_dir

      rdoc_target_deps = [
        @rdoc_files,
        Rake.application.rakefile
      ].flatten.compact

      task rdoc_task_name => [rdoc_target]
      file rdoc_target => rdoc_target_deps do
        @before_running_rdoc.call if @before_running_rdoc
        args = option_list + @rdoc_files

        $stderr.puts "rdoc #{args.join ' '}" if Rake.application.options.trace
        RDoc::RDoc.new.document args
      end

      namespace rdoc_task_name do
        desc coverage_task_description
        task coverage_task_name do
          @before_running_rdoc.call if @before_running_rdoc
          opts = option_list << "-C"
          args = opts + @rdoc_files

          $stderr.puts "rdoc #{args.join ' '}" if Rake.application.options.trace
          RDoc::RDoc.new.document args
        end
      end

      self
    end

Create the tasks defined by this task lib.

option_list ()
Source

    # File lib/rdoc/task.rb, line 271
    def option_list
      result = @options.dup
      result << "-o"       << @rdoc_dir
      result << "--main"   << main      if main
      result << "--markup" << markup    if markup
      result << "--title"  << title     if title
      result << "-T"       << template  if template
      result << '-f'       << generator if generator
      result
    end

List of options that will be supplied to `RDoc`

rdoc_task_description ()
Source

    # File lib/rdoc/task.rb, line 294
    def rdoc_task_description
      'Build RDoc HTML files'
    end

`Task` description for the rdoc task or its renamed equivalent

rerdoc_task_description ()
Source

    # File lib/rdoc/task.rb, line 301
    def rerdoc_task_description
      "Rebuild RDoc HTML files"
    end

`Task` description for the rerdoc task or its renamed description

### Private Instance Methods

clobber_task_name ()
Source

    # File lib/rdoc/task.rb, line 325
    def clobber_task_name
      case name
      when Hash then (name[:clobber_rdoc] || "clobber_rdoc").to_s
      else           "clobber_#{name}"
      end
    end

coverage_task_name ()
Source

    # File lib/rdoc/task.rb, line 339
    def coverage_task_name
      "coverage"
    end

rdoc_target ()
Source

    # File lib/rdoc/task.rb, line 314
    def rdoc_target
      "#{rdoc_dir}/created.rid"
    end

rdoc_task_name ()
Source

    # File lib/rdoc/task.rb, line 318
    def rdoc_task_name
      case name
      when Hash then (name[:rdoc] || "rdoc").to_s
      else           name.to_s
      end
    end

rerdoc_task_name ()
Source

    # File lib/rdoc/task.rb, line 332
    def rerdoc_task_name
      case name
      when Hash then (name[:rerdoc] || "rerdoc").to_s
      else           "re#{name}"
      end
    end