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Showing content from https://docs.ruby-lang.org/en/3.1/RDoc/Task.html below:

class RDoc::Task - RDoc Documentation

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Rebuild the rdoc files from scratch, even if they are not out of date.

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.

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.doc"
  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 and :rdoc:force.

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]

Comment markup format. rdoc, rd and tomdoc are supported. (default is ‘rdoc’)

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)

new(name = :rdoc) { |self| ... } click to toggle source

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

def initialize name = :rdoc 
  defaults

  check_names name

  @name = name

  yield self if block_given?

  define
end

before_running_rdoc(&block) click to toggle source

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.

def before_running_rdoc(&block)
  @before_running_rdoc = block
end

check_names(names) click to toggle source

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

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

clobber_task_description() click to toggle source

Task description for the clobber rdoc task or its renamed equivalent

def clobber_task_description
  "Remove RDoc HTML files"
end

defaults() click to toggle source

Sets default task values

def defaults
  @name = :rdoc
  @rdoc_files = Rake::FileList.new
  @rdoc_dir = 'html'
  @main = nil
  @title = nil
  @template = nil
  @generator = nil
  @options = []
end

define() click to toggle source

Create the tasks defined by this task lib.

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

  self
end

option_list() click to toggle source

List of options that will be supplied to RDoc

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

rdoc_task_description() click to toggle source

Task description for the rdoc task or its renamed equivalent

def rdoc_task_description
  'Build RDoc HTML files'
end

rerdoc_task_description() click to toggle source

Task description for the rerdoc task or its renamed description

def rerdoc_task_description
  "Rebuild RDoc HTML files"
end

clobber_task_name() click to toggle source

def clobber_task_name
  case name
  when Hash then (name[:clobber_rdoc] || "clobber_rdoc").to_s
  else           "clobber_#{name}"
  end
end

rdoc_target() click to toggle source

def rdoc_target
  "#{rdoc_dir}/created.rid"
end

rdoc_task_name() click to toggle source

def rdoc_task_name
  case name
  when Hash then (name[:rdoc] || "rdoc").to_s
  else           name.to_s
  end
end

rerdoc_task_name() click to toggle source

def rerdoc_task_name
  case name
  when Hash then (name[:rerdoc] || "rerdoc").to_s
  else           "re#{name}"
  end
end

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