Class: Jekyll::Post

Inherits:
Object
  • Object
show all
Includes:
Comparable, Convertible
Defined in:
lib/jekyll/post.rb

Constant Summary collapse

MATCHER = 
/^(.+\/)*(\d+-\d+-\d+(?:_\d+-\d+)?)-(.*)(\.[^.]+)$/

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Convertible

#content_type, #do_layout, #read_yaml, #render_haml_in_context, #to_s, #transform

Constructor Details

#initialize(site, source, dir, name) ⇒ Post

Initialize this Post instance. site is the Site base is the String path to the dir containing the post file name is the String filename of the post file categories is an Array of Strings for the categories for this post tags is an Array of Strings for the tags for this post

Returns 



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# File 'lib/jekyll/post.rb', line 38

def initialize(site, source, dir, name)
  @site = site
  @base = File.join(source, dir, '_posts')
  @name = name

  self.categories = dir.split('/').reject { |x| x.empty? }

  parts = name.split('/')
  self.topics = parts.size > 1 ? parts[0..-2] : []

  self.process(name)
  self.data = self.site.post_defaults.dup
  self.read_yaml(@base, name)

  extract_title_from_first_header_or_slug

  if self.data.has_key?('published') && self.data['published'] == false
    self.published = false
  else
    self.published = true
  end

  if self.categories.empty?
    if self.data.has_key?('category')
      self.categories << self.data['category']
    elsif self.data.has_key?('categories')
      # Look for categories in the YAML-header, either specified as
      # an array or a string.
      if self.data['categories'].kind_of? String
        self.categories = self.data['categories'].split
      else
        self.categories = self.data['categories']
      end
    end
  end

  self.tags = self.data['tags'] || []
end

Class Attribute Details

.lsi ⇒ Object

Returns the value of attribute lsi.



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# File 'lib/jekyll/post.rb', line 8

def lsi
  @lsi
end

Instance Attribute Details

#categories ⇒ Object 



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# File 'lib/jekyll/post.rb', line 26

def categories
  @categories ||= []
end

#content ⇒ Object

Returns the value of attribute content.



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# File 'lib/jekyll/post.rb', line 23

def content
  @content
end

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/jekyll/post.rb', line 23

def data
  @data
end

#date ⇒ Object

The post date and time

Returns 



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# File 'lib/jekyll/post.rb', line 172

def date
  @date
end

#ext ⇒ Object

Returns the value of attribute ext.



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# File 'lib/jekyll/post.rb', line 23

def ext
  @ext
end

#output ⇒ Object

Returns the value of attribute output.



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# File 'lib/jekyll/post.rb', line 23

def output
  @output
end

#published ⇒ Object

Returns the value of attribute published.



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# File 'lib/jekyll/post.rb', line 23

def published
  @published
end

#site ⇒ Object

Returns the value of attribute site.



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# File 'lib/jekyll/post.rb', line 23

def site
  @site
end

#slug ⇒ Object

Returns the value of attribute slug.



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# File 'lib/jekyll/post.rb', line 23

def slug
  @slug
end

#tags ⇒ Object

Returns the value of attribute tags.



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# File 'lib/jekyll/post.rb', line 23

def tags
  @tags
end

#topics ⇒ Object

Returns the value of attribute topics.



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# File 'lib/jekyll/post.rb', line 23

def topics
  @topics
end

Class Method Details

.valid?(name) ⇒ Boolean

Post name validator. Post filenames must be like:

2008-11-05-my-awesome-post.textile

or:

2008-11-05_12-45-my-awesome-post.textile

Returns

Returns:

  • (Boolean) 


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# File 'lib/jekyll/post.rb', line 19

def self.valid?(name)
  name =~ MATCHER
end

Instance Method Details

#<=>(other) ⇒ Object

Spaceship is based on Post#date

Returns -1, 0, 1



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# File 'lib/jekyll/post.rb', line 80

def <=>(other)
  self.date <=> other.date
end

#dir ⇒ Object

The generated directory into which the post will be placed upon generation. This is derived from the permalink or, if permalink is absent, set to the default date e.g. "/2008/11/05/" if the permalink style is :date, otherwise nothing

Returns 



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# File 'lib/jekyll/post.rb', line 102

def dir
  File.dirname(generated_path)
end

#extract_title_from_first_header_or_slug ⇒ Object

Attempt to extract title from topmost header or slug.

Returns 



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# File 'lib/jekyll/post.rb', line 251

def extract_title_from_first_header_or_slug
  # Done before the transformation to HTML, or it won't go into <title>s.
  self.data["title"] ||=
    case content_type
    when 'textile'
      self.content[/\A\s*h\d\.\s*(.+)/, 1]               # h1. Header
    when 'markdown'
      self.content[/\A\s*#+\s*(.+)\s*#*$/, 1] ||         # "# Header"
      self.content[/\A\s*(\S.*)\r?\n\s*(-+|=+)\s*$/, 1]  # "Header\n====="
    end
  self.data["title"] ||= self.slug.split('-').select {|w| w.capitalize! || w }.join(' ')
end

#generated_path ⇒ Object

The generated relative path of this post e.g. /2008/11/05/my-awesome-post.html

Returns 



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# File 'lib/jekyll/post.rb', line 132

def generated_path
  return permalink if permalink

  @generated_path ||= {
    "year"       => date.strftime("%Y"),
    "month"      => date.strftime("%m"),
    "day"        => date.strftime("%d"),
    "title"      => slug,
    "categories" => categories.sort.join('/')
  }.inject(template) { |result, token|
    result.gsub(/:#{token.first}/, token.last)
  }.gsub("//", "/")
end

#id ⇒ Object

The UID for this post (useful in feeds) e.g. /2008/11/05/my-awesome-post

Returns 



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# File 'lib/jekyll/post.rb', line 158

def id
  File.join(self.dir, self.slug)
end

#inspect ⇒ Object 



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# File 'lib/jekyll/post.rb', line 281

def inspect
  "<Post: #{self.id}>"
end

#next ⇒ Object 



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# File 'lib/jekyll/post.rb', line 285

def next
  pos = self.site.posts.index(self)

  if pos && pos < self.site.posts.length-1
    self.site.posts[pos+1]
  else
    nil
  end
end

#path ⇒ Object

The path to the post file.

Returns 



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# File 'lib/jekyll/post.rb', line 186

def path
  File.expand_path(File.join(@base, @name))
end

#permalink ⇒ Object

The full path and filename of the post. Defined in the YAML of the post body (Optional)

Returns 



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# File 'lib/jekyll/post.rb', line 111

def permalink
  self.data && self.data['permalink']
end

#previous ⇒ Object 



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# File 'lib/jekyll/post.rb', line 295

def previous
  pos = self.site.posts.index(self)
  if pos && pos > 0
    self.site.posts[pos-1]
  else
    nil
  end
end

#process(name) ⇒ Object

Extract information from the post filename name is the String filename of the post file

Returns nothing



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# File 'lib/jekyll/post.rb', line 88

def process(name)
  m, cats, date, slug, ext = *name.match(MATCHER)
  date = date.sub(/_(\d+)-(\d+)\Z/, ' \1:\2')  # Make optional time part parsable.
  self.date = Time.parse(date)
  self.slug = slug
  self.ext = ext
end

#related_posts(posts) ⇒ Object

Calculate related posts.

Returns []



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# File 'lib/jekyll/post.rb', line 193

def related_posts(posts)
  return [] unless posts.size > 1

  if self.site.lsi
    self.class.lsi ||= begin
      puts "Running the classifier... this could take a while."
      lsi = Classifier::LSI.new
      posts.each { |x| $stdout.print(".");$stdout.flush;lsi.add_item(x) }
      puts ""
      lsi
    end

    related = self.class.lsi.find_related(self.content, 11)
    related - [self]
  else
    (posts - [self])[0..9]
  end
end

#render(layouts, site_payload) ⇒ Object

Add any necessary layouts to this post layouts is a Hash of => "layout" site_payload is the site payload hash

Returns nothing



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# File 'lib/jekyll/post.rb', line 217

def render(layouts, site_payload)
  # construct payload
  payload =
  {
    "site" => { "related_posts" => related_posts(site_payload["site"]["posts"]) },
    "page" => self.to_liquid
  }
  payload = payload.deep_merge(site_payload)

  do_layout(payload, layouts)
end

#template ⇒ Object 



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# File 'lib/jekyll/post.rb', line 115

def template
  case self.site.permalink_style
  when :pretty
    "/:categories/:year/:month/:day/:title"
  when :none
    "/:categories/:title.html"
  when :date
    "/:categories/:year/:month/:day/:title.html"
  else
    self.site.permalink_style.to_s
  end
end

#title ⇒ Object

The post title

Returns 



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# File 'lib/jekyll/post.rb', line 165

def title
  self.data && self.data["title"]
end

#to_liquid ⇒ Object

Convert this post into a Hash for use in Liquid templates.

Returns 



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# File 'lib/jekyll/post.rb', line 267

def to_liquid
  { "title" => self.title,
    "url" => self.url,
    "date" => self.date,
    "id" => self.id,
    "path" => self.path,
    "topics" => self.topics,
    "categories" => self.categories,
    "tags" => self.tags,
    "next" => self.next,
    "previous" => self.previous,
    "content" => self.content }.deep_merge(self.data)
end

#url ⇒ Object

The generated relative url of this post e.g. /2008/11/05/my-awesome-post

Returns 



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# File 'lib/jekyll/post.rb', line 150

def url
  site.config['multiviews'] ? generated_path.sub(/\.html$/, '') : generated_path
end

#write(dest) ⇒ Object

Write the generated post file to the destination directory. dest is the String path to the destination dir

Returns nothing



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# File 'lib/jekyll/post.rb', line 233

def write(dest)
  FileUtils.mkdir_p(File.join(dest, dir))

  path = File.join(dest, self.generated_path)

  if template[/\.html$/].nil?
    FileUtils.mkdir_p(path)
    path = File.join(path, "index.html")
  end

  File.open(path, 'w') do |f|
    f.write(self.output)
  end
end