Represents a compileable item in a site. It has content and attributes, as well as an identifier (which starts and ends with a slash). It can also store the modification time to speed up compilation.
A string that uniquely identifies an item in a site.
Identifiers start and end with a slash. They are comparable to paths on the filesystem, with the difference that file system paths usually do not have a trailing slash. The item hierarchy (parent and children of items) is determined by the item identifier.
The root page (the home page) has the identifier “/”, which means that it is the ancestor of all other items.
@return [String] This item’s identifier
@return [Nanoc::Item, nil] The parent item of this item. This can be
nil even for non-root items.
Creates a new item with the given content or filename, attributes and identifier.
@param [String] raw_content_or_raw_filename The uncompiled item content
(if it is a textual item) or the path to the filename containing the content (if it is a binary item).
@param [Hash] attributes A hash containing this item’s attributes.
@param [String] identifier This item’s identifier.
@param [Time, Hash] params Extra parameters. For backwards
compatibility, this can be a Time instance indicating the time when this item was last modified (mtime).
@option params [Time, nil] :mtime (nil) The time when this item was last
modified. Deprecated; pass the modification time as the `:mtime` attribute instead.
@option params [Symbol, nil] :binary (true) Whether or not this item is
binary
# File lib/nanoc/base/source_data/item.rb, line 69 def initialize(raw_content_or_raw_filename, attributes, identifier, params = nil) # Parse params params ||= {} params = { :mtime => params } if params.is_a?(Time) params[:binary] = false unless params.key?(:binary) if raw_content_or_raw_filename.nil? raise "attempted to create an item with no content/filename (identifier #{identifier})" end # Get type and raw content or raw filename @is_binary = params[:binary] if @is_binary @raw_filename = raw_content_or_raw_filename else @raw_filename = attributes[:content_filename] @raw_content = raw_content_or_raw_filename end # Get rest of params @attributes = attributes.symbolize_keys_recursively @identifier = identifier.cleaned_identifier.freeze # Set mtime @attributes.merge!(:mtime => params[:mtime]) if params[:mtime] @parent = nil @children = [] @reps = [] end
# File lib/nanoc/base/source_data/item.rb, line 261 def ==(other) self.eql?(other) end
Requests the attribute with the given key.
@param [Symbol] key The name of the attribute to fetch
@return [Object] The value of the requested attribute
# File lib/nanoc/base/source_data/item.rb, line 169 def [](key) Nanoc::NotificationCenter.post(:visit_started, self) Nanoc::NotificationCenter.post(:visit_ended, self) # Get captured content (hax) # TODO [in nanoc 4.0] remove me if key.to_s =~ /^content_for_(.*)$/ @@_content_for_warning_issued ||= false @@_Nanoc_Helpers_Capturing_included ||= false # Warn unless @@_content_for_warning_issued warn 'WARNING: Accessing captured content should happen using the #content_for method defined in the Capturing helper instead of using item[:content_for_something]. The latter way of accessing captured content will be removed in nanoc 4.0.' @@_content_for_warning_issued = true end # Include capturing helper if necessary unless @@_Nanoc_Helpers_Capturing_included self.class.send(:include, ::Nanoc::Helpers::Capturing) @@_Nanoc_Helpers_Capturing_included = true end # Get content return content_for(self, $1.to_sym) end @attributes[key] end
Sets the attribute with the given key to the given value.
@param [Symbol] key The name of the attribute to set
@param [Object] value The value of the attribute to set
# File lib/nanoc/base/source_data/item.rb, line 203 def []=(key, value) @attributes[key] = value end
@return [Boolean] True if the item is binary; false if it is not
# File lib/nanoc/base/source_data/item.rb, line 208 def binary? !!@is_binary end
@return [String] The checksum for this object. If its contents change,
the checksum will change as well.
# File lib/nanoc/base/source_data/item.rb, line 248 def checksum Nanoc::Checksummer.calc(self) end
Returns the compiled content from a given representation and a given snapshot. This is a convenience method that makes fetching compiled content easier.
@option params [String] :rep (:default) The name of the representation
from which the compiled content should be fetched. By default, the compiled content will be fetched from the default representation.
@option params [String] :snapshot The name of the snapshot from which to
fetch the compiled content. By default, the returned compiled content will be the content compiled right before the first layout call (if any).
@return [String] The compiled content of the given rep (or the default
rep if no rep is specified) at the given snapshot (or the default snapshot if no snapshot is specified)
# File lib/nanoc/base/source_data/item.rb, line 128 def compiled_content(params = {}) # Get rep rep_name = params[:rep] || :default rep = reps.find { |r| r.name == rep_name } if rep.nil? raise Nanoc::Errors::Generic, "No rep named #{rep_name.inspect} was found." end # Get rep's content rep.compiled_content(params) end
# File lib/nanoc/base/source_data/item.rb, line 257 def eql?(other) self.class == other.class && identifier == other.identifier end
@api private
# File lib/nanoc/base/source_data/item.rb, line 284 def forced_outdated=(bool) @forced_outdated = bool end
@api private
# File lib/nanoc/base/source_data/item.rb, line 289 def forced_outdated? @forced_outdated || false end
Prevents all further modifications to its attributes.
@return [void]
# File lib/nanoc/base/source_data/item.rb, line 234 def freeze attributes.freeze_recursively children.freeze identifier.freeze raw_filename.freeze if raw_filename raw_content.freeze if raw_content end
# File lib/nanoc/base/source_data/item.rb, line 253 def hash self.class.hash ^ identifier.hash end
# File lib/nanoc/base/source_data/item.rb, line 242 def inspect "<#{self.class} identifier=\"#{identifier}\" binary?=#{self.binary?}>" end
# File lib/nanoc/base/source_data/item.rb, line 265 def marshal_dump [ @is_binary, @raw_filename, @raw_content, @attributes, @identifier ] end
# File lib/nanoc/base/source_data/item.rb, line 275 def marshal_load(source) @is_binary, @raw_filename, @raw_content, @attributes, @identifier = *source end
@deprecated Access the modification time using `item` instead.
# File lib/nanoc/base/source_data/item.rb, line 294 def mtime self[:mtime] end
Returns the path from a given representation. This is a convenience method that makes fetching the path of a rep easier.
@option params [String] :rep (:default) The name of the representation
from which the path should be fetched. By default, the path will be fetched from the default representation.
@return [String] The path of the given rep ( or the default rep if no
rep is specified)
# File lib/nanoc/base/source_data/item.rb, line 150 def path(params = {}) rep_name = params[:rep] || :default # Get rep rep = reps.find { |r| r.name == rep_name } if rep.nil? raise Nanoc::Errors::Generic, "No rep named #{rep_name.inspect} was found." end # Get rep's path rep.path end
Returns an object that can be used for uniquely identifying objects.
@api private
@return [Object] An unique reference to this object
# File lib/nanoc/base/source_data/item.rb, line 227 def reference [ type, identifier ] end
Returns the rep with the given name.
@param [Symbol] rep_name The name of the representation to return
@return [Nanoc::ItemRep] The representation with the given name
# File lib/nanoc/base/source_data/item.rb, line 106 def rep_named(rep_name) @reps.find { |r| r.name == rep_name } end
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