class RDoc::Generator::Darkfish

Darkfish RDoc HTML Generator

$Id: darkfish.rb 52 2009-01-07 02:08:11Z deveiant $

Author/s¶ ↑

Michael Granger (ged@FaerieMUD.org)

Contributors¶ ↑

Mahlon E. Smith (mahlon@martini.nu)
Eric Hodel (drbrain@segment7.net)

License¶ ↑

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of the author/s, nor the names of the project’s contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Attributions¶ ↑

Darkfish uses the Silk Icons set by Mark James.

Constants

DESCRIPTION: Description of this generator
GENERATOR_DIR: Path to this file’s parent directory. Used to find templates and other resources.
SVNID_PATTERN: %q$Id: darkfish.rb 52 2009-01-07 02:08:11Z deveiant $“
VERSION: Release Version

Attributes

asset_rel_path[RW]

The relative path to style sheets and javascript. By default this is set the same as the rel_prefix.

base_dir[R]

The path to generate files into, combined with --op from the options for a full path.

classes[R]

Classes and modules to be used by this generator, not necessarily displayed. See also modsort

dry_run[RW]

No files will be written when dry_run is true.

file_output[RW]

When false the generate methods return a String instead of writing to a file. The default is true.

files[R]

Files to be displayed by this generator

json_index[R]

The JSON index generator for this Darkfish generator

methods[R]

Methods to be displayed by this generator

modsort[R]

Sorted list of classes and modules to be displayed by this generator

outputdir[R]

The output directory

store[R]

The RDoc::Store that is the source of the generated content

Public Class Methods

new(store, options) click to toggle source

Initialize a few instance variables before we start

# File rdoc/generator/darkfish.rb, line 159
def initialize store, options
  @store   = store
  @options = options

  @asset_rel_path = ''
  @base_dir       = Pathname.pwd.expand_path
  @dry_run        = @options.dry_run
  @file_output    = true
  @template_dir   = Pathname.new options.template_dir
  @template_cache = {}

  @classes = nil
  @context = nil
  @files   = nil
  @methods = nil
  @modsort = nil

  @json_index = RDoc::Generator::JsonIndex.new self, options
end

Public Instance Methods

assemble_template(body_file) click to toggle source

Creates a template from its components and the body_file.

For backwards compatibility, if body_file contains “<html” the body is used directly.

# File rdoc/generator/darkfish.rb, line 675
  def assemble_template body_file
    body = body_file.read
    return body if body =~ /<html/

    head_file = @template_dir + '_head.rhtml'

    <<-TEMPLATE
<!DOCTYPE html>

<html>
<head>
#{head_file.read}

#{body}
    TEMPLATE
  end

class_dir() click to toggle source

Directory where generated class HTML files live relative to the output dir.

# File rdoc/generator/darkfish.rb, line 191
def class_dir
  nil
end

copy_static() click to toggle source

Copies static files from the static_path into the output directory

# File rdoc/generator/darkfish.rb, line 265
def copy_static
  return if @options.static_path.empty?

  fu_options = { :verbose => $DEBUG_RDOC, :noop => @dry_run }

  @options.static_path.each do |path|
    unless File.directory? path then
      FileUtils.install path, @outputdir, **fu_options.merge(:mode => 0644)
      next
    end

    Dir.chdir path do
      Dir[File.join('**', '*')].each do |entry|
        dest_file = @outputdir + entry

        if File.directory? entry then
          FileUtils.mkdir_p entry, **fu_options
        else
          FileUtils.install entry, dest_file, **fu_options.merge(:mode => 0644)
        end
      end
    end
  end
end

debug_msg(*msg) click to toggle source

Output progress information if debugging is enabled

# File rdoc/generator/darkfish.rb, line 182
def debug_msg *msg
  return unless $DEBUG_RDOC
  $stderr.puts(*msg)
end

excerpt(content) click to toggle source

Returns an excerpt of the content for usage in meta description tags

# File rdoc/generator/darkfish.rb, line 784
def excerpt(content)
  text = case content
  when RDoc::Comment
    content.text
  when RDoc::Markup::Document
    # This case is for page files that are not markdown nor rdoc
    # We convert them to markdown for now as it's easier to extract the text
    formatter = RDoc::Markup::ToMarkdown.new
    formatter.start_accepting
    formatter.accept_document(content)
    formatter.end_accepting
  else
    content
  end

  # Match from a capital letter to the first period, discarding any links, so
  # that we don't end up matching badges in the README
  first_paragraph_match = text.match(/[A-Z][^\.:\/]+\./)
  return text[0...150].gsub(/\n/, " ").squeeze(" ") unless first_paragraph_match

  extracted_text = first_paragraph_match[0]
  second_paragraph = first_paragraph_match.post_match.match(/[A-Z][^\.:\/]+\./)
  extracted_text << " " << second_paragraph[0] if second_paragraph

  extracted_text[0...150].gsub(/\n/, " ").squeeze(" ")
end

file_dir() click to toggle source

Directory where generated class HTML files live relative to the output dir.

# File rdoc/generator/darkfish.rb, line 199
def file_dir
  nil
end

gen_sub_directories() click to toggle source

Create the directories the generated docs will live in if they don’t already exist.

# File rdoc/generator/darkfish.rb, line 207
def gen_sub_directories
  @outputdir.mkpath
end

generate() click to toggle source

Build the initial indices and output objects based on an array of TopLevel objects containing the extracted information.

# File rdoc/generator/darkfish.rb, line 241
def generate
  setup

  write_style_sheet
  generate_index
  generate_class_files
  generate_file_files
  generate_table_of_contents
  @json_index.generate
  @json_index.generate_gzipped

  copy_static

rescue => e
  debug_msg "%s: %s\n  %s" % [
    e.class.name, e.message, e.backtrace.join("\n  ")
  ]

  raise
end

generate_ancestor_list(ancestors, klass) click to toggle source

# File rdoc/generator/darkfish.rb, line 811
def generate_ancestor_list(ancestors, klass)
  return '' if ancestors.empty?

  ancestor = ancestors.shift
  content = +'<ul><li>'

  if ancestor.is_a?(RDoc::NormalClass)
    content << "<a href=\"#{klass.aref_to ancestor.path}\">#{ancestor.full_name}</a>"
  else
    content << ancestor.to_s
  end

  # Recursively call the method for the remaining ancestors
  content << generate_ancestor_list(ancestors, klass)

  content << '</li></ul>'
end

generate_class(klass, template_file = nil) click to toggle source

Generates a class file for klass

# File rdoc/generator/darkfish.rb, line 337
def generate_class klass, template_file = nil
  setup

  current = klass

  template_file ||= @template_dir + 'class.rhtml'

  debug_msg "  working on %s (%s)" % [klass.full_name, klass.path]
  out_file   = @outputdir + klass.path
  rel_prefix = @outputdir.relative_path_from out_file.dirname
  search_index_rel_prefix = rel_prefix
  search_index_rel_prefix += @asset_rel_path if @file_output

  asset_rel_prefix = rel_prefix + @asset_rel_path
  svninfo          = get_svninfo(current)

  @title = "#{klass.type} #{klass.full_name} - #{@options.title}"

  debug_msg "  rendering #{out_file}"
  render_template template_file, out_file do |io|
    here = binding
    # suppress 1.9.3 warning
    here.local_variable_set(:asset_rel_prefix, asset_rel_prefix)
    here.local_variable_set(:svninfo, svninfo)
    here
  end
end

generate_class_files() click to toggle source

Generate a documentation file for each class and module

# File rdoc/generator/darkfish.rb, line 368
def generate_class_files
  setup

  template_file = @template_dir + 'class.rhtml'
  template_file = @template_dir + 'classpage.rhtml' unless
    template_file.exist?
  return unless template_file.exist?
  debug_msg "Generating class documentation in #{@outputdir}"

  current = nil

  @classes.each do |klass|
    current = klass

    generate_class klass, template_file
  end
rescue => e
  error = RDoc::Error.new \
    "error generating #{current.path}: #{e.message} (#{e.class})"
  error.set_backtrace e.backtrace

  raise error
end

generate_file_files() click to toggle source

Generate a documentation file for each file

# File rdoc/generator/darkfish.rb, line 395
def generate_file_files
  setup

  page_file     = @template_dir + 'page.rhtml'
  fileinfo_file = @template_dir + 'fileinfo.rhtml'

  # for legacy templates
  filepage_file = @template_dir + 'filepage.rhtml' unless
    page_file.exist? or fileinfo_file.exist?

  return unless
    page_file.exist? or fileinfo_file.exist? or filepage_file.exist?

  debug_msg "Generating file documentation in #{@outputdir}"

  out_file = nil
  current = nil

  @files.each do |file|
    current = file

    if file.text? and page_file.exist? then
      generate_page file
      next
    end

    template_file = nil
    out_file = @outputdir + file.path
    debug_msg "  working on %s (%s)" % [file.full_name, out_file]
    rel_prefix = @outputdir.relative_path_from out_file.dirname
    search_index_rel_prefix = rel_prefix
    search_index_rel_prefix += @asset_rel_path if @file_output

    asset_rel_prefix = rel_prefix + @asset_rel_path

    unless filepage_file then
      if file.text? then
        next unless page_file.exist?
        template_file = page_file
        @title = file.page_name
      else
        next unless fileinfo_file.exist?
        template_file = fileinfo_file
        @title = "File: #{file.base_name}"
      end
    end

    @title += " - #{@options.title}"
    template_file ||= filepage_file

    render_template template_file, out_file do |io|
      here = binding
      # suppress 1.9.3 warning
      here.local_variable_set(:asset_rel_prefix, asset_rel_prefix)
      here.local_variable_set(:current, current)
      here
    end
  end
rescue => e
  error =
    RDoc::Error.new "error generating #{out_file}: #{e.message} (#{e.class})"
  error.set_backtrace e.backtrace

  raise error
end

generate_index() click to toggle source

Generate an index page which lists all the classes which are documented.

# File rdoc/generator/darkfish.rb, line 303
def generate_index
  setup

  template_file = @template_dir + 'index.rhtml'
  return unless template_file.exist?

  debug_msg "Rendering the index page..."

  out_file = @base_dir + @options.op_dir + 'index.html'
  rel_prefix = @outputdir.relative_path_from out_file.dirname
  search_index_rel_prefix = rel_prefix
  search_index_rel_prefix += @asset_rel_path if @file_output

  asset_rel_prefix = rel_prefix + @asset_rel_path

  @title = @options.title

  render_template template_file, out_file do |io|
    here = binding
    # suppress 1.9.3 warning
    here.local_variable_set(:asset_rel_prefix, asset_rel_prefix)
    here
  end
rescue => e
  error = RDoc::Error.new \
    "error generating index.html: #{e.message} (#{e.class})"
  error.set_backtrace e.backtrace

  raise error
end

generate_page(file) click to toggle source

Generate a page file for file

# File rdoc/generator/darkfish.rb, line 464
def generate_page file
  setup

  template_file = @template_dir + 'page.rhtml'

  out_file = @outputdir + file.path
  debug_msg "  working on %s (%s)" % [file.full_name, out_file]
  rel_prefix = @outputdir.relative_path_from out_file.dirname
  search_index_rel_prefix = rel_prefix
  search_index_rel_prefix += @asset_rel_path if @file_output

  current          = file
  asset_rel_prefix = rel_prefix + @asset_rel_path

  @title = "#{file.page_name} - #{@options.title}"

  debug_msg "  rendering #{out_file}"
  render_template template_file, out_file do |io|
    here = binding
    # suppress 1.9.3 warning
    here.local_variable_set(:current, current)
    here.local_variable_set(:asset_rel_prefix, asset_rel_prefix)
    here
  end
end

generate_servlet_not_found(message) click to toggle source

Generates the 404 page for the RDoc servlet

# File rdoc/generator/darkfish.rb, line 493
def generate_servlet_not_found message
  setup

  template_file = @template_dir + 'servlet_not_found.rhtml'
  return unless template_file.exist?

  debug_msg "Rendering the servlet 404 Not Found page..."

  rel_prefix = rel_prefix = ''
  search_index_rel_prefix = rel_prefix
  search_index_rel_prefix += @asset_rel_path if @file_output

  asset_rel_prefix = ''

  @title = 'Not Found'

  render_template template_file do |io|
    here = binding
    # suppress 1.9.3 warning
    here.local_variable_set(:asset_rel_prefix, asset_rel_prefix)
    here
  end
rescue => e
  error = RDoc::Error.new \
    "error generating servlet_not_found: #{e.message} (#{e.class})"
  error.set_backtrace e.backtrace

  raise error
end

generate_servlet_root(installed) click to toggle source

Generates the servlet root page for the RDoc servlet

# File rdoc/generator/darkfish.rb, line 526
def generate_servlet_root installed
  setup

  template_file = @template_dir + 'servlet_root.rhtml'
  return unless template_file.exist?

  debug_msg 'Rendering the servlet root page...'

  rel_prefix = '.'
  asset_rel_prefix = rel_prefix
  search_index_rel_prefix = asset_rel_prefix
  search_index_rel_prefix += @asset_rel_path if @file_output

  @title = 'Local RDoc Documentation'

  render_template template_file do |io| binding end
rescue => e
  error = RDoc::Error.new \
    "error generating servlet_root: #{e.message} (#{e.class})"
  error.set_backtrace e.backtrace

  raise error
end

generate_table_of_contents() click to toggle source

Generate an index page which lists all the classes which are documented.

# File rdoc/generator/darkfish.rb, line 553
def generate_table_of_contents
  setup

  template_file = @template_dir + 'table_of_contents.rhtml'
  return unless template_file.exist?

  debug_msg "Rendering the Table of Contents..."

  out_file = @outputdir + 'table_of_contents.html'
  rel_prefix = @outputdir.relative_path_from out_file.dirname
  search_index_rel_prefix = rel_prefix
  search_index_rel_prefix += @asset_rel_path if @file_output

  asset_rel_prefix = rel_prefix + @asset_rel_path

  @title = "Table of Contents - #{@options.title}"

  render_template template_file, out_file do |io|
    here = binding
    # suppress 1.9.3 warning
    here.local_variable_set(:asset_rel_prefix, asset_rel_prefix)
    here
  end
rescue => e
  error = RDoc::Error.new \
    "error generating table_of_contents.html: #{e.message} (#{e.class})"
  error.set_backtrace e.backtrace

  raise error
end

get_sorted_module_list(classes) click to toggle source

Return a list of the documented modules sorted by salience first, then by name.

# File rdoc/generator/darkfish.rb, line 294
def get_sorted_module_list classes
  classes.select do |klass|
    klass.display?
  end.sort
end

get_svninfo(klass) click to toggle source

Try to extract Subversion information out of the first constant whose value looks like a subversion Id tag. If no matching constant is found, and empty hash is returned.

# File rdoc/generator/darkfish.rb, line 652
def get_svninfo klass
  constants = klass.constants or return {}

  constants.find { |c| c.value =~ SVNID_PATTERN } or return {}

  filename, rev, date, time, committer = $~.captures
  commitdate = Time.parse "#{date} #{time}"

  return {
    :filename    => filename,
    :rev         => Integer(rev),
    :commitdate  => commitdate,
    :commitdelta => time_delta_string(Time.now - commitdate),
    :committer   => committer,
  }
end

render(file_name) click to toggle source

Renders the ERb contained in file_name relative to the template directory and returns the result based on the current context.

# File rdoc/generator/darkfish.rb, line 696
def render file_name
  template_file = @template_dir + file_name

  template = template_for template_file, false, RDoc::ERBPartial

  template.filename = template_file.to_s

  template.result @context
end

render_template(template_file, out_file = nil) { |io| ... } click to toggle source

Load and render the erb template in the given template_file and write it out to out_file.

Both template_file and out_file should be Pathname-like objects.

An io will be yielded which must be captured by binding in the caller.

# File rdoc/generator/darkfish.rb, line 714
def render_template template_file, out_file = nil # :yield: io
  io_output = out_file && !@dry_run && @file_output
  erb_klass = io_output ? RDoc::ERBIO : ERB

  template = template_for template_file, true, erb_klass

  if io_output then
    debug_msg "Outputting to %s" % [out_file.expand_path]

    out_file.dirname.mkpath
    out_file.open 'w', 0644 do |io|
      io.set_encoding @options.encoding

      @context = yield io

      template_result template, @context, template_file
    end
  else
    @context = yield nil

    output = template_result template, @context, template_file

    debug_msg "  would have written %d characters to %s" % [
      output.length, out_file.expand_path
    ] if @dry_run

    output
  end
end

setup() click to toggle source

Prepares for generation of output from the current directory

# File rdoc/generator/darkfish.rb, line 604
def setup
  return if instance_variable_defined? :@outputdir

  @outputdir = Pathname.new(@options.op_dir).expand_path @base_dir

  return unless @store

  @classes = @store.all_classes_and_modules.sort
  @files   = @store.all_files.sort
  @methods = @classes.flat_map { |m| m.method_list }.sort
  @modsort = get_sorted_module_list @classes
end

template_for(file, page = true, klass = ERB) click to toggle source

Retrieves a cache template for file, if present, or fills the cache.

# File rdoc/generator/darkfish.rb, line 761
def template_for file, page = true, klass = ERB
  template = @template_cache[file]

  return template if template

  if page then
    template = assemble_template file
    erbout = 'io'
  else
    template = file.read
    template = template.encode @options.encoding

    file_var = File.basename(file).sub(/\..*/, '')

    erbout = "_erbout_#{file_var}"
  end

  template = klass.new template, trim_mode: '-', eoutvar: erbout
  @template_cache[file] = template
  template
end

template_result(template, context, template_file) click to toggle source

Creates the result for template with context. If an error is raised a Pathname template_file will indicate the file where the error occurred.

# File rdoc/generator/darkfish.rb, line 748
def template_result template, context, template_file
  template.filename = template_file.to_s
  template.result context
rescue NoMethodError => e
  raise RDoc::Error, "Error while evaluating %s: %s" % [
    template_file.expand_path,
    e.message,
  ], e.backtrace
end

time_delta_string(seconds) click to toggle source

Return a string describing the amount of time in the given number of seconds in terms a human can understand easily.

# File rdoc/generator/darkfish.rb, line 621
def time_delta_string seconds
  return 'less than a minute'          if seconds < 60
  return "#{seconds / 60} minute#{seconds / 60 == 1 ? '' : 's'}" if
                                          seconds < 3000     # 50 minutes
  return 'about one hour'              if seconds < 5400     # 90 minutes
  return "#{seconds / 3600} hours"     if seconds < 64800    # 18 hours
  return 'one day'                     if seconds < 86400    #  1 day
  return 'about one day'               if seconds < 172800   #  2 days
  return "#{seconds / 86400} days"     if seconds < 604800   #  1 week
  return 'about one week'              if seconds < 1209600  #  2 week
  return "#{seconds / 604800} weeks"   if seconds < 7257600  #  3 months
  return "#{seconds / 2419200} months" if seconds < 31536000 #  1 year
  return "#{seconds / 31536000} years"
end

write_style_sheet() click to toggle source

Copy over the stylesheet into the appropriate place in the output directory.

# File rdoc/generator/darkfish.rb, line 215
def write_style_sheet
  debug_msg "Copying static files"
  options = { :verbose => $DEBUG_RDOC, :noop => @dry_run }

  BUILTIN_STYLE_ITEMS.each do |item|
    install_rdoc_static_file @template_dir + item, "./#{item}", options
  end

  unless @options.template_stylesheets.empty?
    FileUtils.cp @options.template_stylesheets, '.', **options
  end

  Dir[(@template_dir + "{js,images}/**/*").to_s].each do |path|
    next if File.directory? path
    next if File.basename(path) =~ /^\./

    dst = Pathname.new(path).relative_path_from @template_dir

    install_rdoc_static_file @template_dir + path, dst, options
  end
end