Class: HrefTag::ExternalHref

Inherits:
Liquid::Tag
  • Object
show all
Defined in:
href.rb

Instance Method Summary collapse

Constructor Details

#initialize(tag_name, command_line, tokens) ⇒ void

Constructor.

Parameters:

  • tag_name (String) —

    is the name of the tag, which we already know.

  • command_line (Hash, String, Liquid::Tag::Parser) —

    the arguments from the web page.

  • tokens (Liquid::ParseContext) —

    tokenized command line



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# File 'href.rb', line 54

def initialize(tag_name, command_line, tokens)
  super

  @follow = " rel='nofollow'"
  @match = false
  @target = " target='_blank'"

  tokens = command_line.strip.split(" ")

  followIndex = tokens.index("follow")
  if followIndex then
    tokens.delete_at(followIndex)
    @follow = ""
  end

  targetIndex = tokens.index("notarget")
  if targetIndex then
    tokens.delete_at(targetIndex)
    @target = ""
  end

  matchIndex = tokens.index("match")
  if matchIndex then
    tokens.delete_at(matchIndex)
    @follow = ""
    @match = true
    @target = ""
  end

  @link = tokens.shift

  @text = tokens.join(" ").strip
  if @text.empty? then 
    @text = "<code>" + @link + "</code>" 
    @link = "https://" + @link
  end

  unless @link.start_with? "http"
    @follow = ""
    @target = ""
  end
end

Instance Method Details

#match(context) ⇒ Object 



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# File 'href.rb', line 97

def match(context)
  site = context.registers[:site]
  config = site.config['href']
  die_if_nomatch = !config.nil? && config['nomatch'] && config['nomatch']=='fatal'

  path, fragment = @link.split('#')

  # puts "@link=#{@link}"
  # puts "site.posts[0].url = #{site.posts.docs[0].url}"
  # puts "site.posts[0].path = #{site.posts.docs[0].path}"
  posts = site.posts.docs.select { |x| x.url.include?(path) }
  case posts.length
  when 0
    if die_if_nomatch then
      abort "href error: No url matches '#{@link}'"
    else
      @link = "#"
      @text = "<i>#{@link} is not available</i>"
    end
  when 1
    @link = "#{@link}\##{fragment}" if fragment
  else
    abort "Error: More than one url matched: #{ matches.join(", ")}"
  end
end

#render(context) ⇒ String

Method prescribed by the Jekyll plugin lifecycle.

Returns:

  • (String) 


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# File 'href.rb', line 134

def render(context)
  if (@match) then match(context) end
  link = replaceVars(context, @link)  # puts "@link=#{@link}; link=#{link}"

  "<a href='#{link}'#{@target}#{@follow}>#{@text}</a>"
end

#replaceVars(context, link) ⇒ Object 



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# File 'href.rb', line 123

def replaceVars(context, link)
  variables = context.registers[:site].config['plugin-vars']
  variables.each do |name, value|
    #puts "#{name}=#{value}"
    link = link.gsub("{{#{name}}}", value)
  end
  link
end