Class: RDoc::Markup::ToHtml

### Home Classes Methods

### In Files

- lib/rdoc/markup/to_html.rb

### Parent

RDoc::Markup::Formatter

### Sections

- Special Handling
- Utilities
- Visitor

### Methods

- ::new
- #accept_blank_line
- #accept_block_quote
- #accept_heading
- #accept_list_end
- #accept_list_item_end
- #accept_list_item_start
- #accept_list_start
- #accept_paragraph
- #accept_raw
- #accept_rule
- #accept_verbatim
- #convert_string
- #end_accepting
- #gen_url
- #handle_special_HARD_BREAK
- #handle_special_HYPERLINK
- #handle_special_RDOCLINK
- #handle_special_TIDYLINK
- #html_list_name
- #init_tags
- #list_end_for
- #list_item_start
- #parseable?
- #start_accepting
- #to_html

### Included Modules

- RDoc::Text

### Files

- CVE-2013-0256.rdoc
- DEVELOPERS.rdoc
- LICENSE.rdoc
- Manifest.txt
- README.rdoc
- RI.rdoc
- Rakefile
- TODO.rdoc

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No matching classes.

# RDoc::Markup::ToHtml

Outputs RDoc markup as HTML.

### Public Class Methods

new(options, markup = nil) click to toggle source

Creates a new formatter that will output HTML

    # File lib/rdoc/markup/to_html.rb, line 44
    def initialize options, markup = nil
      super

      @code_object = nil
      @from_path = ''
      @in_list_entry = nil
      @list = nil
      @th = nil
      @hard_break = "<br>\n"

      # external links
      @markup.add_special(/(?:link:|https?:|mailto:|ftp:|irc:|www\.)\S+\w/,
                          :HYPERLINK)

      add_special_RDOCLINK
      add_special_TIDYLINK

      init_tags
    end

## Special Handling ↑ top

These methods handle special markup added by RDoc::Markup#add_special.

### Public Instance Methods

handle_special_HARD_BREAK(special) click to toggle source

`special` is a `<br>`

    # File lib/rdoc/markup/to_html.rb, line 71
    def handle_special_HARD_BREAK special
      '<br>'
    end

handle_special_HYPERLINK(special) click to toggle source

`special` is a potential link. The following schemes are handled:

`mailto:` | Inserted as-is.
`http:` | Links are checked to see if they reference an image. If so, that image gets inserted using an `<img>` tag. Otherwise a conventional `<a href>` is used.
`link:` | Reference to a local file relative to the output directory.

    # File lib/rdoc/markup/to_html.rb, line 87
    def handle_special_HYPERLINK(special)
      url = special.text

      gen_url url, url
    end

handle_special_RDOCLINK(special) click to toggle source

`special` is an rdoc-schemed link that will be converted into a hyperlink.

For the `rdoc-ref` scheme the named reference will be returned without creating a link.

For the `rdoc-label` scheme the footnote and label prefixes are stripped when creating a link. All other contents will be linked verbatim.

    # File lib/rdoc/markup/to_html.rb, line 102
    def handle_special_RDOCLINK special
      url = special.text

      case url
      when /\Ardoc-ref:/
        $'
      when /\Ardoc-label:/
        text = $'

        text = case text
               when /\Alabel-/    then $'
               when /\Afootmark-/ then "^#{$'}"
               when /\Afoottext-/ then "*#{$'}"
               else                    text
               end

        gen_url url, text
      else
        url =~ /\Ardoc-[a-z]+:/

        $'
      end
    end

handle_special_TIDYLINK(special) click to toggle source

This `special` is a link where the label is different from the URL `label[url]` or `{long label}[url]`

    # File lib/rdoc/markup/to_html.rb, line 130
    def handle_special_TIDYLINK(special)
      text = special.text

      return text unless text =~ /\{(.*?)\}\[(.*?)\]/ or text =~ /(\S+)\[(.*?)\]/

      label = $1
      url   = $2
      gen_url url, label
    end

## Utilities ↑ top

### Constants

LIST_TYPE_TO_HTML

  Maps RDoc::Markup::Parser::LIST_TOKENS types to HTML tags

### Attributes

code_object[RW]

The RDoc::CodeObject HTML is being generated for. This is used to generate namespaced URI fragments

from_path[RW]

Path to this document for relative links

### Public Instance Methods

convert_string(text) click to toggle source

CGI-escapes `text`

    # File lib/rdoc/markup/to_html.rb, line 298
    def convert_string(text)
      CGI.escapeHTML text
    end

gen_url(url, text) click to toggle source

Generate a link to `url` with content `text`. Handles the special cases for img: and link: described under handle_special_HYPERLINK

    # File lib/rdoc/markup/to_html.rb, line 306
    def gen_url url, text
      scheme, url, id = parse_url url

      if ]http https link].include?(scheme) and
         url =~ /\.(gif|png|jpg|jpeg|bmp)$/ then
        "<img src=\"#{url}\" />"
      else
        "<a#{id} href=\"#{url}\">#{text.sub(%r{^#{scheme}:/*}i, '')}</a>"
      end
    end

html_list_name(list_type, open_tag) click to toggle source

Determines the HTML list element for `list_type` and `open_tag`

    # File lib/rdoc/markup/to_html.rb, line 320
    def html_list_name(list_type, open_tag)
      tags = LIST_TYPE_TO_HTML[list_type]
      raise RDoc::Error, "Invalid list type: #{list_type.inspect}" unless tags
      tags[open_tag ? 0 : 1]
    end

init_tags() click to toggle source

Maps attributes to HTML tags

    # File lib/rdoc/markup/to_html.rb, line 329
    def init_tags
      add_tag :BOLD, "<strong>", "</strong>"
      add_tag :TT,   "<code>",   "</code>"
      add_tag :EM,   "<em>",     "</em>"
    end

list_end_for(list_type) click to toggle source

Returns the HTML end-tag for `list_type`

    # File lib/rdoc/markup/to_html.rb, line 355
    def list_end_for(list_type)
      case list_type
      when :BULLET, :LALPHA, :NUMBER, :UALPHA then
        "</li>"
      when :LABEL, :NOTE then
        "</dd>"
      else
        raise RDoc::Error, "Invalid list type: #{list_type.inspect}"
      end
    end

list_item_start(list_item, list_type) click to toggle source

Returns the HTML tag for `list_type`, possible using a label from `list_item`

    # File lib/rdoc/markup/to_html.rb, line 339
    def list_item_start(list_item, list_type)
      case list_type
      when :BULLET, :LALPHA, :NUMBER, :UALPHA then
        "<li>"
      when :LABEL, :NOTE then
        Array(list_item.label).map do |label|
          "<dt>#{to_html label}\n"
        end.join << "<dd>"
      else
        raise RDoc::Error, "Invalid list type: #{list_type.inspect}"
      end
    end

parseable?(text) click to toggle source

Returns true if Ripper is available it can create a sexp from `text`

    # File lib/rdoc/markup/to_html.rb, line 369
    def parseable? text
      text =~ /\b(def|class|module|require) |=>|\{\s?\||do \|/ and
        text !~ /<%|%>/
    end

to_html(item) click to toggle source

Converts `item` to HTML using RDoc::Text#to_html

    # File lib/rdoc/markup/to_html.rb, line 377
    def to_html item
      super convert_flow @am.flow item
    end

## Visitor ↑ top

These methods implement the HTML visitor.

### Public Instance Methods

accept_blank_line(blank_line) click to toggle source

Adds `blank_line` to the output

    # File lib/rdoc/markup/to_html.rb, line 262
    def accept_blank_line(blank_line)
      # @res << annotate("<p />") << "\n"
    end

accept_block_quote(block_quote) click to toggle source

Adds `block_quote` to the output

    # File lib/rdoc/markup/to_html.rb, line 163
    def accept_block_quote block_quote
      @res << "\n<blockquote>"

      block_quote.parts.each do |part|
        part.accept self
      end

      @res << "</blockquote>\n"
    end

accept_heading(heading) click to toggle source

Adds `heading` to the output. The headings greater than 6 are trimmed to level 6.

    # File lib/rdoc/markup/to_html.rb, line 270
    def accept_heading heading
      level = [6, heading.level].min

      label = heading.aref
      label = [@code_object.aref, label].compact.join '-' if
        @code_object and @code_object.respond_to? :aref

      @res << "\n<h#{level} id=\"#{label}\">"
      @res << to_html(heading.text)
      unless @options.pipe then
        @res << "<span><a href=\"##{label}\">&para;</a>"
        @res << " <a href=\"#documentation\">&uarr;</a></span>"
      end
      @res << "</h#{level}>\n"
    end

accept_list_end(list) click to toggle source

Finishes consumption of `list`

    # File lib/rdoc/markup/to_html.rb, line 233
    def accept_list_end(list)
      @list.pop
      if tag = @in_list_entry.pop
        @res << tag
      end
      @res << html_list_name(list.type, false) << "\n"
    end

accept_list_item_end(list_item) click to toggle source

Finishes consumption of `list_item`

    # File lib/rdoc/markup/to_html.rb, line 255
    def accept_list_item_end(list_item)
      @in_list_entry[-1] = list_end_for(@list.last)
    end

accept_list_item_start(list_item) click to toggle source

Prepares the visitor for consuming `list_item`

    # File lib/rdoc/markup/to_html.rb, line 244
    def accept_list_item_start(list_item)
      if tag = @in_list_entry.last
        @res << tag
      end

      @res << list_item_start(list_item, @list.last)
    end

accept_list_start(list) click to toggle source

Prepares the visitor for consuming `list`

    # File lib/rdoc/markup/to_html.rb, line 224
    def accept_list_start(list)
      @list << list.type
      @res << html_list_name(list.type, true)
      @in_list_entry.push false
    end

accept_paragraph(paragraph) click to toggle source

Adds `paragraph` to the output

    # File lib/rdoc/markup/to_html.rb, line 176
    def accept_paragraph paragraph
      @res << "\n<p>"
      text = paragraph.text @hard_break
      text = text.gsub(/\r?\n/, ' ')
      @res << wrap(to_html(text))
      @res << "</p>\n"
    end

accept_raw(raw) click to toggle source

Adds `raw` to the output

    # File lib/rdoc/markup/to_html.rb, line 289
    def accept_raw raw
      @res << raw.parts.join("\n")
    end

accept_rule(rule) click to toggle source

Adds `rule` to the output

    # File lib/rdoc/markup/to_html.rb, line 215
    def accept_rule(rule)
      size = rule.weight
      size = 10 if size > 10
      @res << "<hr style=\"height: #{size}px\">\n"
    end

accept_verbatim(verbatim) click to toggle source

Adds `verbatim` to the output

    # File lib/rdoc/markup/to_html.rb, line 187
    def accept_verbatim verbatim
      text = verbatim.text.rstrip

      klass = nil

      content = if verbatim.ruby? or parseable? text then
                  begin
                    tokens = RDoc::RubyLex.tokenize text, @options
                    klass  = ' class="ruby"'

                    RDoc::TokenStream.to_html tokens
                  rescue RDoc::RubyLex::Error
                    CGI.escapeHTML text
                  end
                else
                  CGI.escapeHTML text
                end

      if @options.pipe then
        @res << "\n<pre><code>#{CGI.escapeHTML text}</code></pre>\n"
      else
        @res << "\n<pre#{klass}>#{content}</pre>\n"
      end
    end

end_accepting() click to toggle source

Returns the generated output

    # File lib/rdoc/markup/to_html.rb, line 156
    def end_accepting
      @res.join
    end

start_accepting() click to toggle source

Prepares the visitor for HTML generation

    # File lib/rdoc/markup/to_html.rb, line 147
    def start_accepting
      @res = []
      @in_list_entry = []
      @list = []
    end

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