Class: Jekyll::NavTree

Inherits:
Liquid::Tag
  • Object
show all
Defined in:
lib/jekyll-navigation-tree.rb

Instance Method Summary collapse

Constructor Details

#initialize(tag_name, path, tokens) ⇒ NavTree

Returns a new instance of NavTree.



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# File 'lib/jekyll-navigation-tree.rb', line 19

def initialize(tag_name, path, tokens)
  super
  @path = path
end

Instance Method Details

#files_first_traverse(prefix, node = {}) ⇒ Object 



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# File 'lib/jekyll-navigation-tree.rb', line 108

def files_first_traverse(prefix, node = {})
output = ""
output += "#{prefix}<ul>"
node_list = node.sort

# node_list:

# [["/about", {}],
#  ["/assets", {"/assets/main.css"=>{}}],
#  ["/feed.xml", {}],
#  ["/imprint", {}],
#  ["/mixing",
#   {"/mixing/defaults.html"=>{},
#    "/mixing/shure-beta-58a.html"=>{},
#    "/mixing/shure-ulx.html"=>{},
#    "/mixing/t-bone-free-solo-pt-823-mhz.html"=>{}}],
#  ["/rezepte",
#   {"/rezepte/fleisch"=>
#     {"/rezepte/fleisch/amerikanisches-rindersteak.html"=>{},
#      "/rezepte/fleisch/chili-con-carne.html"=>{},
#      "/rezepte/fleisch/fleischpfanzerl.html"=>{},

node_list.each do |base, subtree|
    # base: "/about"
    name = base[1..-1]
    # name: "about"
    if name.index('.html')
      name = @dirs[name]["title"] || name
    # e. g.: "tech/websites/lrz/index.html" => is "tech/websites/lrz/"
    # in @dirs hash.
    elsif @dirs.has_key? name + "/"
      name = @dirs[name + "/"]["title"] || name
    end

    output += "#{prefix}	 <li><a href=\"#{base}\">#{name}</a></li>" if subtree.empty?
end

node_list.each do |base, subtree|
  next if subtree.empty?
    name = base[1..-1]
    # name: "tech/commands"
    if @dirs.has_key? name + '/'
      href = base
      name = @dirs[name + '/']['title'] || name
    elsif name.index('/')
      name = name[name.rindex('/')+1..-1] || name
    end

    if href
      name_link = "<a href=\"#{base}\">#{name}</a>"
    else
      name_link = "<div class=\"subtree-name\">#{name}</div>"
    end

    output += "#{prefix}	<li>#{name_link}"
    output += files_first_traverse(prefix + '	 ', subtree)
    output+= "</li>"

  end

  output += "#{prefix} </ul>"
  output
end

#render(context) ⇒ Object 



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# File 'lib/jekyll-navigation-tree.rb', line 24

def render(context)
  site = context.registers[:site]

  @page_url = context.environments.first["page"]["url"]
  # @page_url: "/tech/"

  @dirs = {}
  tree = {}

  site.pages.each do |page|
    ap page
    if ! page.data.has_key? "nav_tree" || page.data["nav_tree"] == true
      #  page: #<Jekyll:Page @name="Motorola-Moto-E-2nd-Gen-XT1524-4G-LTE.md">
      path = page.url
      # path: /tech/hardware/Motorola-Moto-E-2nd-Gen-XT1524-4G-LTE.html
      path = path.index('/') == 0 ? path[1..-1] : path

      # page.data:

      # {
      #        "layout" => "page",
      #         "title" => "About",
      #     "permalink" => "/about/"
      # }
      @dirs[path] = page.data
    end
  end

  # @dirs:

  # {
  #   "tech/hardware/Motorola-Moto-E-2nd-Gen-XT1524-4G-LTE.html"=>{
  #     "title"=>"Motorola Moto E 2nd Gen XT1524 4G LTE"
  #   },
  #  "about/ "=> {
  #    "layout"=>"page",
  #    "title"=>"About",
  #    "permalink"=>"/about/"
  #   },
  #   "tech/commands/adb.html"=>{
  #     "title"=>"adb (Android Debug Bridge)"
  #   },
  #   "tech/websites/lrz-seite-2003/"=>{
  #     "title"=>"LRZ-Seite (2003)"
  #   },
  # }

  @dirs.each do |path, data|
    current = tree
    path.split("/").inject("") do |sub_path, dir|
      sub_path = File.join(sub_path, dir)

      current[sub_path] ||= {}
      current = current[sub_path]
      sub_path
    end
  end

  puts "generating nav tree for #{@page_url}"

  # tree:
  # {"/tech"=>
  #   {"/tech/hardware"=>
  #     {"/tech/hardware/Motorola-Moto-E-2nd-Gen-XT1524-4G-LTE.html"=>{},
  #      "/tech/hardware/banana-pi-pro.html"=>{},
  #      "/tech/hardware/brother-hl-5350dn.html"=>{},
  if @path == nil || @path == ""
    base_path = @page_url.chomp('/')
  else
    base_path = @path.strip.chomp('/')
  end

  if base_path == ""
    sub_tree = tree
  else
    if base_path.index('/') != 0
      base_path = '/' + base_path
    end
    sub_tree = tree[base_path]
  end

  files_first_traverse("", sub_tree)
end