Class: Jekyll::Document

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/jekyll/document.rb

Constant Summary collapse

YAML_FRONT_MATTER_REGEXP = 
/\A(---\s*\n.*?\n?)^((---|\.\.\.)\s*$\n?)/m
DATELESS_FILENAME_MATCHER = 
/^(.+\/)*(.*)(\.[^.]+)$/
DATE_FILENAME_MATCHER = 
/^(.+\/)*(\d+-\d+-\d+)-(.*)(\.[^.]+)$/

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path, relations = {}) ⇒ Document

Create a new Document.

path - the path to the file relations - a hash with keys :site and :collection, the values of which

are the Jekyll::Site and Jekyll::Collection to which this
Document belong.

Returns nothing.



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# File 'lib/jekyll/document.rb', line 22

def initialize(path, relations = {})
  @site = relations[:site]
  @path = path
  @extname = File.extname(path)
  @collection = relations[:collection]
  @has_yaml_header = nil

  if draft?
    categories_from_path("_drafts")
  else
    categories_from_path(collection.relative_directory)
  end

  data.default_proc = proc do |_, key|
    site.frontmatter_defaults.find(relative_path, collection.label, key)
  end

  trigger_hooks(:post_init)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &blck) ⇒ Object

Override of method_missing to check in @data for the key.



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# File 'lib/jekyll/document.rb', line 427

def method_missing(method, *args, &blck)
  if data.key?(method.to_s)
    Jekyll.logger.warn "Deprecation:", "Document##{method} is now a key in the #data hash."
    Jekyll.logger.warn "", "Called by #{caller.first}."
    data[method.to_s]
  else
    super
  end
end

Instance Attribute Details

#collection ⇒ Object (readonly)

Returns the value of attribute collection.



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# File 'lib/jekyll/document.rb', line 7

def collection
  @collection
end

#content ⇒ Object

Returns the value of attribute content.



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

def content
  @content
end

#extname ⇒ Object (readonly)

Returns the value of attribute extname.



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# File 'lib/jekyll/document.rb', line 7

def extname
  @extname
end

#output ⇒ Object

Returns the value of attribute output.



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

def output
  @output
end

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/jekyll/document.rb', line 7

def path
  @path
end

#site ⇒ Object (readonly)

Returns the value of attribute site.



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# File 'lib/jekyll/document.rb', line 7

def site
  @site
end

Instance Method Details

#<=>(other) ⇒ Object

Compare this document against another document. Comparison is a comparison between the 2 paths of the documents.

Returns -1, 0, +1 or nil depending on whether this doc’s path is less than,

equal or greater than the other doc's path. See String#<=> for more details.



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# File 'lib/jekyll/document.rb', line 355

def <=>(other)
  return nil unless other.respond_to?(:data)
  cmp = data['date'] <=> other.data['date']
  cmp = path <=> other.path if cmp.nil? || cmp == 0
  cmp
end

#[](key) ⇒ Object 



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# File 'lib/jekyll/document.rb', line 208

def [](key)
  data[key]
end

#asset_file? ⇒ Boolean

Determine whether the document is an asset file. Asset files include CoffeeScript files and Sass/SCSS files.

Returns true if the extname belongs to the set of extensions

that asset files use.

Returns:

  • (Boolean) 


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# File 'lib/jekyll/document.rb', line 140

def asset_file?
  sass_file? || coffeescript_file?
end

#basename ⇒ Object

The base filename of the document.

Returns the base filename of the document.



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# File 'lib/jekyll/document.rb', line 108

def basename
  @basename ||= File.basename(path)
end

#basename_without_ext ⇒ Object

The base filename of the document, without the file extname.

Returns the basename without the file extname.



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# File 'lib/jekyll/document.rb', line 101

def basename_without_ext
  @basename_without_ext ||= File.basename(path, '.*')
end

#categories_from_path(special_dir) ⇒ Object

Add superdirectories of the special_dir to categories. In the case of es/_posts, ‘es’ is added as a category. In the case of _posts/es, ‘es’ is NOT added as a category.

Returns nothing.



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# File 'lib/jekyll/document.rb', line 307

def categories_from_path(special_dir)
  superdirs = relative_path.sub(/#{special_dir}(.*)/, '').split(File::SEPARATOR).reject do |c|
    c.empty? || c.eql?(special_dir) || c.eql?(basename)
  end
  merge_data!({ 'categories' => superdirs }, source: "file path")
end

#cleaned_relative_path ⇒ Object

Produces a “cleaned” relative path. The “cleaned” relative path is the relative path without the extname

and with the collection's directory removed as well.

This method is useful when building the URL of the document.

Examples:

When relative_path is "_methods/site/generate.md":
  cleaned_relative_path
  # => "/site/generate"

Returns the cleaned relative path of the document.



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# File 'lib/jekyll/document.rb', line 123

def cleaned_relative_path
  @cleaned_relative_path ||=
    relative_path[0..-extname.length - 1].sub(collection.relative_directory, "")
end

#coffeescript_file? ⇒ Boolean

Determine whether the document is a CoffeeScript file.

Returns true if extname == .coffee, false otherwise.

Returns:

  • (Boolean) 


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# File 'lib/jekyll/document.rb', line 154

def coffeescript_file?
  '.coffee'.eql?(extname)
end

#data ⇒ Object

Fetch the Document’s data.

Returns a Hash containing the data. An empty hash is returned if

no data was read.



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# File 'lib/jekyll/document.rb', line 46

def data
  @data ||= {}
end

#date ⇒ Object 



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# File 'lib/jekyll/document.rb', line 70

def date
  data['date'] ||= site.time
end

#destination(base_directory) ⇒ Object

The full path to the output file.

base_directory - the base path of the output directory

Returns the full path to the output file of this document.



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

def destination(base_directory)
  dest = site.in_dest_dir(base_directory)
  path = site.in_dest_dir(dest, URL.unescape_path(url))
  path = File.join(path, "index.html") if url.end_with?("/")
  path << output_ext unless path.end_with? output_ext
  path
end

#draft? ⇒ Boolean

Returns whether the document is a draft. This is only the case if the document is in the ‘posts’ collection but in a different directory than ‘_posts’.

Returns whether the document is a draft.

Returns:

  • (Boolean) 


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# File 'lib/jekyll/document.rb', line 79

def draft?
  data['draft'] ||= relative_path.index(collection.relative_directory).nil? && collection.label == "posts"
end

#excerpt_separator ⇒ Object

The Document excerpt_separator, from the YAML Front-Matter or site default excerpt_separator value

Returns the document excerpt_separator



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# File 'lib/jekyll/document.rb', line 375

def excerpt_separator
  (data['excerpt_separator'] || site.config['excerpt_separator']).to_s
end

#generate_excerpt? ⇒ Boolean

Whether to generate an excerpt

Returns true if the excerpt separator is configured.

Returns:

  • (Boolean) 


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# File 'lib/jekyll/document.rb', line 382

def generate_excerpt?
  !excerpt_separator.empty?
end

#id ⇒ Object 



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# File 'lib/jekyll/document.rb', line 409

def id
  @id ||= File.join(File.dirname(url), (data['slug'] || basename_without_ext).to_s)
end

#inspect ⇒ Object

The inspect string for this document. Includes the relative path and the collection label.

Returns the inspect string for this document.



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# File 'lib/jekyll/document.rb', line 339

def inspect
  "#<Jekyll::Document #{relative_path} collection=#{collection.label}>"
end

#merge_data!(other, source: "YAML front matter") ⇒ Object

Merge some data in with this document’s data.

Returns the merged data.



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# File 'lib/jekyll/document.rb', line 53

def merge_data!(other, source: "YAML front matter")
  if other.key?('categories') && !other['categories'].nil?
    if other['categories'].is_a?(String)
      other['categories'] = other['categories'].split(" ").map(&:strip)
    end
    other['categories'] = (data['categories'] || []) | other['categories']
  end
  Utils.deep_merge_hashes!(data, other)
  if data.key?('date') && !data['date'].is_a?(Time)
    data['date'] = Utils.parse_date(
      data['date'].to_s,
      "Document '#{relative_path}' does not have a valid date in the #{source}."
    )
  end
  data
end

#next_doc ⇒ Object 



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# File 'lib/jekyll/document.rb', line 386

def next_doc
  pos = collection.docs.index { |post| post.equal?(self) }
  if pos && pos < collection.docs.length - 1
    collection.docs[pos + 1]
  else
    nil
  end
end

#output_ext ⇒ Object

The output extension of the document.

Returns the output extension



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# File 'lib/jekyll/document.rb', line 94

def output_ext
  Jekyll::Renderer.new(site, self).output_ext
end

#permalink ⇒ Object

The permalink for this Document. Permalink is set via the data Hash.

Returns the permalink or nil if no permalink was set in the data.



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

def permalink
  data && data.is_a?(Hash) && data['permalink']
end

#place_in_layout? ⇒ Boolean

Determine whether the file should be placed into layouts.

Returns false if the document is either an asset file or a yaml file,

true otherwise.

Returns:

  • (Boolean) 


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# File 'lib/jekyll/document.rb', line 170

def place_in_layout?
  !(asset_file? || yaml_file?)
end

#populate_categories ⇒ Object 



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# File 'lib/jekyll/document.rb', line 314

def populate_categories
  merge_data!({
    'categories' => (
      Array(data['categories']) + Utils.pluralized_array_from_hash(data, 'category', 'categories')
    ).map(&:to_s).flatten.uniq
  })
end

#populate_tags ⇒ Object 



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# File 'lib/jekyll/document.rb', line 322

def populate_tags
  merge_data!({
    "tags" => Utils.pluralized_array_from_hash(data, "tag", "tags").flatten
  })
end

#post_read ⇒ Object 



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

def post_read
  if relative_path =~ DATE_FILENAME_MATCHER
    date, slug, ext = $2, $3, $4
    if !data['date'] || data['date'].to_i == site.time.to_i
      merge_data!({"date" => date}, source: "filename")
    end
  elsif relative_path =~ DATELESS_FILENAME_MATCHER
    slug, ext = $2, $3
  end

  # Try to ensure the user gets a title.
  data["title"] ||= Utils.titleize_slug(slug)
  # Only overwrite slug & ext if they aren't specified.
  data['slug'] ||= slug
  data['ext']  ||= ext

  populate_categories
  populate_tags
  generate_excerpt
end

#previous_doc ⇒ Object 



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# File 'lib/jekyll/document.rb', line 395

def previous_doc
  pos = collection.docs.index { |post| post.equal?(self) }
  if pos && pos > 0
    collection.docs[pos - 1]
  else
    nil
  end
end

#published? ⇒ Boolean

Whether the file is published or not, as indicated in YAML front-matter

Returns true if the ‘published’ key is specified in the YAML front-matter and not ‘false`.

Returns:

  • (Boolean) 


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# File 'lib/jekyll/document.rb', line 243

def published?
  !(data.key?('published') && data['published'] == false)
end

#read(opts = {}) ⇒ Object

Read in the file and assign the content and data based on the file contents. Merge the frontmatter of the file with the frontmatter default values

Returns nothing.



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# File 'lib/jekyll/document.rb', line 252

def read(opts = {})
  Jekyll.logger.debug "Reading:", relative_path

  if yaml_file?
    @data = SafeYAML.load_file(path)
  else
    begin
      defaults = @site.frontmatter_defaults.all(url, collection.label.to_sym)
      merge_data!(defaults, source: "front matter defaults") unless defaults.empty?

      self.content = File.read(path, Utils.merged_file_read_opts(site, opts))
      if content =~ YAML_FRONT_MATTER_REGEXP
        self.content = $POSTMATCH
        data_file = SafeYAML.load(Regexp.last_match(1))
        merge_data!(data_file, source: "YAML front matter") if data_file
      end

      post_read
    rescue SyntaxError => e
      Jekyll.logger.error "Error:", "YAML Exception reading #{path}: #{e.message}"
    rescue Exception => e
      if e.is_a? Jekyll::Errors::FatalException
        raise e
      end
      Jekyll.logger.error "Error:", "could not read file #{path}: #{e.message}"
    end
  end
end

#related_posts ⇒ Object

Calculate related posts.

Returns an Array of related Posts.



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# File 'lib/jekyll/document.rb', line 416

def related_posts
  Jekyll::RelatedPosts.new(self).build
end

#relative_path ⇒ Object

The path to the document, relative to the site source.

Returns a String path which represents the relative path

from the site source to this document



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# File 'lib/jekyll/document.rb', line 87

def relative_path
  @relative_path ||= Pathname.new(path).relative_path_from(Pathname.new(site.source)).to_s
end

#render_with_liquid? ⇒ Boolean

Determine whether the file should be rendered with Liquid.

Returns false if the document is either an asset file or a yaml file,

true otherwise.

Returns:

  • (Boolean) 


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# File 'lib/jekyll/document.rb', line 162

def render_with_liquid?
  !(coffeescript_file? || yaml_file?)
end

#respond_to?(method, include_private = false) ⇒ Boolean

Override of normal respond_to? to match method_missing’s logic for looking in @data.

Returns:

  • (Boolean) 


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# File 'lib/jekyll/document.rb', line 422

def respond_to?(method, include_private = false)
  data.key?(method.to_s) || super
end

#sass_file? ⇒ Boolean

Determine whether the document is a Sass file.

Returns true if extname == .sass or .scss, false otherwise.

Returns:

  • (Boolean) 


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# File 'lib/jekyll/document.rb', line 147

def sass_file?
  %w(.sass .scss).include?(extname)
end

#to_liquid ⇒ Object

Create a Liquid-understandable version of this Document.

Returns a Hash representing this Document’s data.



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# File 'lib/jekyll/document.rb', line 331

def to_liquid
  @to_liquid ||= Drops::DocumentDrop.new(self)
end

#to_s ⇒ Object

The string representation for this document.

Returns the content of the document



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# File 'lib/jekyll/document.rb', line 346

def to_s
  output || content || 'NO CONTENT'
end

#trigger_hooks(hook_name, *args) ⇒ Object 



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# File 'lib/jekyll/document.rb', line 404

def trigger_hooks(hook_name, *args)
  Jekyll::Hooks.trigger collection.label.to_sym, hook_name, self, *args if collection
  Jekyll::Hooks.trigger :documents, hook_name, self, *args
end

#url ⇒ Object

The computed URL for the document. See ‘Jekyll::URL#to_s` for more details.

Returns the computed URL for the document.



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# File 'lib/jekyll/document.rb', line 200

def url
  @url = URL.new({
    :template => url_template,
    :placeholders => url_placeholders,
    :permalink => permalink
  }).to_s
end

#url_placeholders ⇒ Object

Construct a Hash of key-value pairs which contain a mapping between

a key in the URL template and the corresponding value for this document.

Returns the Hash of key-value pairs for replacement in the URL.



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# File 'lib/jekyll/document.rb', line 185

def url_placeholders
  @url_placeholders ||= Drops::UrlDrop.new(self)
end

#url_template ⇒ Object

The URL template where the document would be accessible.

Returns the URL template for the document.



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# File 'lib/jekyll/document.rb', line 177

def url_template
  collection.url_template
end

#write(dest) ⇒ Object

Write the generated Document file to the destination directory.

dest - The String path to the destination dir.

Returns nothing.



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# File 'lib/jekyll/document.rb', line 230

def write(dest)
  path = destination(dest)
  FileUtils.mkdir_p(File.dirname(path))
  File.open(path, 'wb') do |f|
    f.write(output)
  end

  trigger_hooks(:post_write)
end

#write? ⇒ Boolean

Determine whether this document should be written. Based on the Collection to which it belongs.

True if the document has a collection and if that collection’s #write?

method returns true, otherwise false.

Returns:

  • (Boolean) 


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# File 'lib/jekyll/document.rb', line 367

def write?
  collection && collection.write?
end

#yaml_file? ⇒ Boolean

Determine whether the document is a YAML file.

Returns true if the extname is either .yml or .yaml, false otherwise.

Returns:

  • (Boolean) 


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# File 'lib/jekyll/document.rb', line 131

def yaml_file?
  %w(.yaml .yml).include?(extname)
end