Module: YARD::Templates::Helpers::HtmlHelper

Includes:
HtmlSyntaxHighlightHelper, MarkupHelper
Defined in:
lib/yard/templates/helpers/html_helper.rb

Overview

The helper module for HTML templates.

Constant Summary collapse

SimpleMarkupHtml = 
RDoc::Markup::ToHtml.new rescue SM::ToHtml.new

Constants included from MarkupHelper

MarkupHelper::MARKUP_EXTENSIONS, MarkupHelper::MARKUP_FILE_SHEBANG, MarkupHelper::MARKUP_PROVIDERS

Escaping Template Data collapse

Converting Markup to HTML collapse

Syntax Highlighting Source Code collapse

Linking Objects and URLs collapse

URL Helpers collapse

Formatting Objects and Attributes collapse

Getting the Character Encoding collapse

Methods included from HtmlSyntaxHighlightHelper

#html_syntax_highlight_ruby

Instance Method Details

#anchor_for(object) ⇒ String

Returns the anchor for a specific object.

Parameters:

Returns:

  • (String) —

    the anchor for a specific object



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# File 'lib/yard/templates/helpers/html_helper.rb', line 252

def anchor_for(object)
  case object
  when CodeObjects::MethodObject
    "#{object.name}-#{object.scope}_#{object.type}"
  when CodeObjects::ClassVariableObject
    "#{object.name.to_s.gsub('@@', '')}-#{object.type}"
  when CodeObjects::Base
    "#{object.name}-#{object.type}"
  when CodeObjects::Proxy
    object.path
  else
    object.to_s
  end
end

#charset ⇒ String

Returns the current character set. The default value can be overridden by setting the LANG environment variable or by overriding this method. In Ruby 1.9 you can also modify this value by setting Encoding.default_external.

Returns:

  • (String) —

    the current character set

Since:

  • 0.5.4



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# File 'lib/yard/templates/helpers/html_helper.rb', line 434

def charset
  return 'utf-8' unless RUBY19 || lang = ENV['LANG']
  if RUBY19
    lang = Encoding.default_external.name.downcase
  else
    lang = lang.downcase.split('.').last
  end
  case lang
  when "ascii-8bit", "us-ascii", "ascii-7bit"; 'iso-8859-1'
  else; lang
  end
end

#fix_dash_dash(text) ⇒ Object

TODO:

Refactor into own SimpleMarkup subclass

Don’t allow – to turn into — element. The chances of this being some –option is far more likely than the typographical meaning.



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# File 'lib/yard/templates/helpers/html_helper.rb', line 131

def fix_dash_dash(text)
  text.gsub(/—(?=\S)/, '--')
end

#fix_typewriter(text) ⇒ Object

TODO:

Refactor into own SimpleMarkup subclass

Fixes RDoc behaviour with ++ only supporting alphanumeric text.



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# File 'lib/yard/templates/helpers/html_helper.rb', line 115

def fix_typewriter(text)
  text.gsub(/\+(?! )([^\n\+]{1,900})(?! )\+/) do
    type_text, pre_text, no_match = $1, $`, $&
    pre_match = pre_text.scan(%r(</?(?:pre|tt|code).*?>))
    if pre_match.last.nil? || pre_match.last.include?('/')
      '<tt>' + h(type_text) + '</tt>'
    else
      no_match
    end
  end
end

#format_object_name_list(objects) ⇒ String

Formats a list of objects and links them

Returns:

  • (String) —

    a formatted list of objects



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# File 'lib/yard/templates/helpers/html_helper.rb', line 325

def format_object_name_list(objects)
  objects.sort_by {|o| o.name.to_s.downcase }.map do |o| 
    "<span class='name'>" + linkify(o, o.name) + "</span>" 
  end.join(", ")
end

#format_types(typelist, brackets = true) ⇒ String

Formats a list of types from a tag.

Parameters:

  • typelist (Array<String>, FalseClass) —

    the list of types to be formatted.

  • brackets (Boolean) (defaults to: true) —

    omits the surrounding brackets if brackets is set to false.

Returns:

  • (String) —

    the list of types formatted as [Type1, Type2, …] with the types linked to their respective descriptions.



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# File 'lib/yard/templates/helpers/html_helper.rb', line 343

def format_types(typelist, brackets = true)
  return unless typelist.is_a?(Array)
  list = typelist.map do |type| 
    type = type.gsub(/([<>])/) { h($1) }
    type = type.gsub(/([\w:]+)/) { $1 == "lt" || $1 == "gt" ? $1 : linkify($1, $1) }
    "<tt>" + type + "</tt>"
  end
  list.empty? ? "" : (brackets ? "(#{list.join(", ")})" : list.join(", "))
end

#h(text) ⇒ String

Escapes HTML entities

Parameters:

  • text (String) —

    the text to escape

Returns:

  • (String) —

    the HTML with escaped entities



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# File 'lib/yard/templates/helpers/html_helper.rb', line 18

def h(text)
  CGI.escapeHTML(text.to_s)
end

#html_markup_html(text) ⇒ String

Converts HTML to HTML

Parameters:

  • text (String) —

    input html

Returns:

Since:

  • 0.6.0



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# File 'lib/yard/templates/helpers/html_helper.rb', line 103

def html_markup_html(text)
  text
end

#html_markup_markdown(text) ⇒ String

Converts Markdown to HTML

Parameters:

  • text (String) —

    input Markdown text

Returns:

Since:

  • 0.6.0



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# File 'lib/yard/templates/helpers/html_helper.rb', line 62

def html_markup_markdown(text)
  # TODO: other libraries might be more complex
  markup_class(:markdown).new(text).to_html
end

#html_markup_rdoc(text) ⇒ String

Converts RDoc formatting (SimpleMarkup) to HTML

Parameters:

  • text (String) —

    the input RDoc formatted text

Returns:

Since:

  • 0.6.0



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# File 'lib/yard/templates/helpers/html_helper.rb', line 81

def html_markup_rdoc(text)
  begin
    SimpleMarkupHtml.instance_variable_set("@from_path", url_for(object))
    html = MarkupHelper::SimpleMarkup.convert(text, SimpleMarkupHtml)
  end

  html = fix_dash_dash(html)
  html = fix_typewriter(html)
end

#html_markup_text(text) ⇒ String

Converts plaintext to HTML

Parameters:

  • text (String) —

    the input text

Returns:

  • (String) —

    the output HTML

Since:

  • 0.6.0



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# File 'lib/yard/templates/helpers/html_helper.rb', line 95

def html_markup_text(text)
  "<pre>" + text + "</pre>"
end

#html_markup_textile(text) ⇒ String

Converts Textile to HTML

Parameters:

  • text (String) —

    the input Textile text

Returns:

Since:

  • 0.6.0



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# File 'lib/yard/templates/helpers/html_helper.rb', line 71

def html_markup_textile(text)
  doc = markup_class(:textile).new(text)
  doc.hard_breaks = false if doc.respond_to?(:hard_breaks=)
  doc.to_html
end

#html_syntax_highlight(source, type = nil) ⇒ String

Note:

To support a specific language type, implement the method html_syntax_highlight_TYPE in this class.

Syntax highlights source in language type.

Parameters:

  • source (String) —

    the source code to highlight

  • type (Symbol) (defaults to: nil) —

    the language type (:ruby, :plain, etc). Use :plain for no syntax highlighting.

Returns:

  • (String) —

    the highlighted source



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# File 'lib/yard/templates/helpers/html_helper.rb', line 146

def html_syntax_highlight(source, type = nil)
  return "" unless source
  return h(source) if options[:no_highlight]

  type ||= object.source_type || :ruby

  # handle !!!LANG prefix to send to html_syntax_highlight_LANG
  if source =~ /\A(?:[ \t]*\r?\n)?[ \t]*!!!([\w.+-]+)[ \t]*\r?\n/
    type, source = $1, $'
    source = $'
  end
  
  meth = "html_syntax_highlight_#{type}"
  respond_to?(meth) ? send(meth, source) : h(source)
end

#html_syntax_highlight_plain(source) ⇒ String

Returns unhighlighted source.

Returns:

  • (String) —

    unhighlighted source



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# File 'lib/yard/templates/helpers/html_helper.rb', line 163

def html_syntax_highlight_plain(source)
  h(source)
end

#htmlify(text, markup = options[:markup]) ⇒ String

Turns text into HTML using markup style formatting.

Parameters:

  • text (String) —

    the text to format

  • markup (Symbol) (defaults to: options[:markup]) —

    examples are :markdown, :textile, :rdoc. To add a custom markup type, see MarkupHelper

Returns:



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# File 'lib/yard/templates/helpers/html_helper.rb', line 38

def htmlify(text, markup = options[:markup])
  markup_meth = "html_markup_#{markup}"
  return text unless respond_to?(markup_meth)
  return "" unless text
  return text unless markup
  load_markup_provider(markup)
  html = send(markup_meth, text)
  if html.respond_to?(:encode)
    html = html.force_encoding(text.encoding) # for libs that mess with encoding
    html = html.encode(:invalid => :replace, :replace => '?')
  end
  html = resolve_links(html)
  html = html.gsub(/<pre>(?:\s*<code>)?(.+?)(?:<\/code>\s*)?<\/pre>/m) do
    str = $1
    str = html_syntax_highlight(CGI.unescapeHTML(str)) unless options[:no_highlight]
    %Q{<pre class="code">#{str}</pre>}
  end
  html
end

#htmlify_line(*args) ⇒ String

Returns HTMLified text as a single line (paragraphs removed).

Returns:

  • (String) —

    HTMLified text as a single line (paragraphs removed)



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# File 'lib/yard/templates/helpers/html_helper.rb', line 108

def htmlify_line(*args)
  "<div class='inline'>" + htmlify(*args) + "</div>"
end

#link_file(filename, title = nil, anchor = nil) ⇒ String

Links to an extra file

Parameters:

  • filename (String) —

    the filename to link to

  • title (String) (defaults to: nil) —

    the title of the link

  • anchor (String) (defaults to: nil) —

    optional anchor

Returns:

  • (String) —

    the link to the file

Since:

  • 0.5.5



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# File 'lib/yard/templates/helpers/html_helper.rb', line 207

def link_file(filename, title = nil, anchor = nil)
  link_url(url_for_file(filename, anchor), title)
end

#link_include_object(obj) ⇒ Object

Includes an object’s docstring into output.

Since:

  • 0.6.0



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# File 'lib/yard/templates/helpers/html_helper.rb', line 212

def link_include_object(obj)
  htmlify(obj.docstring)
end

#link_object(obj, otitle = nil, anchor = nil, relative = true) ⇒ String

Links to an object with an optional title

Parameters:

Returns:

  • (String) —

    the linked object



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# File 'lib/yard/templates/helpers/html_helper.rb', line 217

def link_object(obj, otitle = nil, anchor = nil, relative = true)
  return otitle if obj.nil?
  obj = Registry.resolve(object, obj, true, true) if obj.is_a?(String)
  if !otitle && obj.root?
    title = "Top Level Namespace"
  elsif otitle
    title = otitle.to_s
  elsif object.is_a?(CodeObjects::Base)
    title = h(object.relative_path(obj))
  else
    title = h(obj.to_s)
  end
  return title unless serializer
  return title if obj.is_a?(CodeObjects::Proxy)
        
  link = url_for(obj, anchor, relative)
  link = link ? link_url(link, title, :title => "#{obj.path} (#{obj.type})") : title
  "<span class='object_link'>" + link + "</span>"
end

#link_url(url, title = nil, params = {}) ⇒ String

Links to a URL

Parameters:

  • url (String) —

    the URL to link to

  • title (String) (defaults to: nil) —

    the optional title to display the link as

  • params (Hash) (defaults to: {}) —

    optional parameters for the link

Returns:



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# File 'lib/yard/templates/helpers/html_helper.rb', line 238

def link_url(url, title = nil, params = {})
  title ||= url
  params = SymbolHash.new(false).update(
    :href => url,
    :title  => h(title)
  ).update(params)
  params[:target] ||= '_parent' if url =~ /^(\w+):\/\//
  "<a #{tag_attrs(params)}>#{title}</a>"
end

#resolve_links(text) ⇒ String

Resolves any text in the form of {Name} to the object specified by Name. Also supports link titles in the form {Name title}.

Examples:

Linking to an instance method

resolve_links("{MyClass#method}") # => "<a href='...'>MyClass#method</a>"

Linking to a class with a title

resolve_links("{A::B::C the C class}") # => "<a href='...'>the c class</a>"

Parameters:

  • text (String) —

    the text to resolve links in

Returns:

  • (String) —

    HTML with linkified references



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# File 'lib/yard/templates/helpers/html_helper.rb', line 178

def resolve_links(text)
  code_tags = 0
  text.gsub(/<(\/)?(pre|code|tt)|\{(\S+?)(?:\s(.*?\S))?\}(?=[\W<]|.+<\/|$)/) do |str|
    closed, tag, name, title, match = $1, $2, $3, $4, $&
    if tag
      code_tags += (closed ? -1 : 1)
      next str
    end
    next str unless code_tags == 0
    
    next(match) if name[0,1] == '|'
    if object.is_a?(String)
      object
    else
      link = linkify(name, title)
      if link == name || link == title
        match = /(.+)?(\{#{Regexp.quote name}(?:\s.*?)?\})(.+)?/.match(text)
        file = (@file ? @file : object.file) || '(unknown)'
        line = (@file ? 1 : (object.docstring.line_range ? object.docstring.line_range.first : 1)) + (match ? $`.count("\n") : 0)
        log.warn "In file `#{file}':#{line}: Cannot resolve link to #{name} from text" + (match ? ":" : ".")
        log.warn((match[1] ? '...' : '') + match[2].gsub("\n","") + (match[3] ? '...' : '')) if match
      end
      
      link
    end
  end
end

#signature(meth, link = true, show_extras = true, full_attr_name = true) ⇒ String

Formats the signature of method meth.

Parameters:

  • meth (CodeObjects::MethodObject) —

    the method object to list the signature of

  • link (Boolean) (defaults to: true) —

    whether to link the method signature to the details view

  • show_extras (Boolean) (defaults to: true) —

    whether to show extra meta-data (visibility, attribute info)

  • full_attr_name (Boolean) (defaults to: true) —

    whether to show the full attribute name (“name=” instead of “name”)

Returns:

  • (String) —

    the formatted method signature



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# File 'lib/yard/templates/helpers/html_helper.rb', line 393

def signature(meth, link = true, show_extras = true, full_attr_name = true)
  meth = convert_method_to_overload(meth)
  
  type = signature_types(meth, link)
  scope = meth.scope == :class ? "+" : "-"
  name = full_attr_name ? meth.name : meth.name.to_s.gsub(/^(\w+)=$/, '\1')
  blk = format_block(meth)
  args = !full_attr_name && meth.writer? ? "" : format_args(meth)
  extras = []
  extras_text = ''
  if show_extras
    if rw = meth.attr_info
      attname = [rw[:read] ? 'read' : nil, rw[:write] ? 'write' : nil].compact
      attname = attname.size == 1 ? attname.join('') + 'only' : nil
      extras << attname if attname
    end
    extras << meth.visibility if meth.visibility != :public
    extras_text = ' <span class="extras">(' + extras.join(", ") + ')</span>' unless extras.empty?
  end
  title = "%s %s<strong>%s</strong>%s %s" % [scope, type, h(name), args, blk]
  if link
    if meth.is_a?(YARD::CodeObjects::MethodObject)
      link_title = "#{h meth.name(true)} (#{meth.scope} #{meth.type})"
    else
      link_title = "#{h name} (#{meth.type})"
    end
    link_url(url_for(meth), title, :title => link_title) + extras_text
  else
    title + extras_text
  end
end

#signature_types(meth, link = true) ⇒ String

Get the return types for a method signature.

Parameters:

Returns:

  • (String) —

    the signature types

Since:

  • 0.5.3



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# File 'lib/yard/templates/helpers/html_helper.rb', line 359

def signature_types(meth, link = true)
  meth = convert_method_to_overload(meth)

  type = options[:default_return] || ""
  if meth.tag(:return) && meth.tag(:return).types
    types = meth.tags(:return).map {|t| t.types ? t.types : [] }.flatten.uniq
    first = link ? h(types.first) : format_types([types.first], false)
    if types.size == 2 && types.last == 'nil'
      type = first + '<sup>?</sup>'
    elsif types.size == 2 && types.last =~ /^(Array)?<#{Regexp.quote types.first}>$/
      type = first + '<sup>+</sup>'
    elsif types.size > 2
      type = [first, '...'].join(', ')
    elsif types == ['void'] && options[:hide_void_return]
      type = ""
    else
      type = link ? h(types.join(", ")) : format_types(types, false)
    end
  elsif !type.empty?
    type = link ? h(type) : format_types([type], false)
  end
  type = "(#{type}) " unless type.empty?
  type
end

#url_for(obj, anchor = nil, relative = true) ⇒ String

Returns the URL for an object.

Parameters:

  • obj (String, CodeObjects::Base) —

    the object (or object path) to link to

  • anchor (String) (defaults to: nil) —

    the anchor to link to

  • relative (Boolean) (defaults to: true) —

    use a relative or absolute link

Returns:

  • (String) —

    the URL location of the object



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# File 'lib/yard/templates/helpers/html_helper.rb', line 273

def url_for(obj, anchor = nil, relative = true)
  link = nil
  return link unless serializer
  
  if obj.is_a?(CodeObjects::Base) && !obj.is_a?(CodeObjects::NamespaceObject)
    # If the obj is not a namespace obj make it the anchor.
    anchor, obj = obj, obj.namespace
  end
  
  objpath = serializer.serialized_path(obj)
  return link unless objpath

  if relative
    fromobj = object
    if object.is_a?(CodeObjects::Base) && 
        !object.is_a?(CodeObjects::NamespaceObject)
      fromobj = fromobj.namespace
    end

    from = serializer.serialized_path(fromobj)
    link = File.relative_path(from, objpath)
  else
    link = objpath
  end

  link + (anchor ? '#' + urlencode(anchor_for(anchor)) : '')
end

#url_for_file(filename, anchor = nil) ⇒ String

Returns the URL for a specific file

Parameters:

  • filename (String) —

    the filename to link to

  • anchor (String) (defaults to: nil) —

    optional anchor

Returns:

  • (String) —

    the URL pointing to the file



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# File 'lib/yard/templates/helpers/html_helper.rb', line 306

def url_for_file(filename, anchor = nil)
  fromobj = object
  if CodeObjects::Base === fromobj && !fromobj.is_a?(CodeObjects::NamespaceObject)
    fromobj = fromobj.namespace
  end
  from = serializer.serialized_path(fromobj)
  if filename == options[:readme]
    filename = 'index'
  else
    filename = 'file.' + File.basename(filename).gsub(/\.[^.]+$/, '')
  end
  link = File.relative_path(from, filename)
  link + '.html' + (anchor ? '#' + urlencode(anchor) : '')
end

#urlencode(text) ⇒ String

Escapes a URL

Parameters:

Returns:

  • (String) —

    the escaped URL



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# File 'lib/yard/templates/helpers/html_helper.rb', line 26

def urlencode(text)
  CGI.escape(text.to_s)
end