# 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¶ ↑

Copyright © 2007, 2008, Michael Granger. All rights reserved.

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 lib/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 lib/rdoc/generator/darkfish.rb, line 648
      def assemble_template body_file
        body = body_file.read
        return body if body =~ /<html/

        head_file = @template_dir + '_head.rhtml'
        footer_file = @template_dir + '_footer.rhtml'

        <<-TEMPLATE
    <!DOCTYPE html>

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

    #{body}

    #{footer_file.read}
        TEMPLATE
      end

class_dir() click to toggle source

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

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

file_dir() click to toggle source

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

    # File lib/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 lib/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 lib/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_class(klass, template_file = nil) click to toggle source

Generates a class file for `klass`

    # File lib/rdoc/generator/darkfish.rb, line 333
    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

      # suppress 1.9.3 warning
      asset_rel_prefix = asset_rel_prefix = rel_prefix + @asset_rel_path
      svninfo          = 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| binding end
    end

generate_class_files() click to toggle source

Generate a documentation file for each class and module

    # File lib/rdoc/generator/darkfish.rb, line 359
    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 lib/rdoc/generator/darkfish.rb, line 386
    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

        # suppress 1.9.3 warning
        asset_rel_prefix = 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| binding 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 lib/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

      # suppress 1.9.3 warning
      asset_rel_prefix = asset_rel_prefix = rel_prefix + @asset_rel_path

      @title = @options.title

      render_template template_file, out_file do |io| binding 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 lib/rdoc/generator/darkfish.rb, line 450
    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

      # suppress 1.9.3 warning
      current          = current          = file
      asset_rel_prefix = 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| binding end
    end

generate_servlet_not_found(message) click to toggle source

Generates the 404 page for the RDoc servlet

    # File lib/rdoc/generator/darkfish.rb, line 474
    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

      # suppress 1.9.3 warning
      asset_rel_prefix = asset_rel_prefix = ''

      @title = 'Not Found'

      render_template template_file do |io| binding 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 lib/rdoc/generator/darkfish.rb, line 503
    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 lib/rdoc/generator/darkfish.rb, line 530
    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

      # suppress 1.9.3 warning
      asset_rel_prefix = asset_rel_prefix = rel_prefix + @asset_rel_path

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

      render_template template_file, out_file do |io| binding 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 lib/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 lib/rdoc/generator/darkfish.rb, line 625
    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 lib/rdoc/generator/darkfish.rb, line 672
    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 lib/rdoc/generator/darkfish.rb, line 690
    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 lib/rdoc/generator/darkfish.rb, line 577
    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.map { |m| m.method_list }.flatten.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 lib/rdoc/generator/darkfish.rb, line 737
    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, nil, '<>', 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 lib/rdoc/generator/darkfish.rb, line 724
    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 lib/rdoc/generator/darkfish.rb, line 594
    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 lib/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

      @options.template_stylesheets.each do |stylesheet|
        FileUtils.cp stylesheet, '.', 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