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generated_page.rb
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generated_page.rb
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# frozen_string_literal: true
module Bridgetown
class GeneratedPage
include LayoutPlaceable
include LiquidRenderable
include Localizable
include Publishable
include Transformable
attr_writer :dir
attr_accessor :site, :paginator, :name, :ext, :basename,
:data, :content, :output, :original_resource
# @return [Boolean]
attr_reader :fast_refresh_order
alias_method :extname, :ext
# A set of extensions that are considered HTML or HTML-like so we
# should not alter them
HTML_EXTENSIONS = %w(
.html
.xhtml
.htm
).freeze
# Initialize a new GeneratedPage.
#
# site - The Site object.
# base - The String path to the source.
# dir - The String path between the source and the file.
# name - The String filename of the file.
# from_plugin - true if the Page file is located in a Gem-based plugin folder
# rubocop:disable Metrics/ParameterLists
def initialize(site, base, dir, name, from_plugin: false)
@site = site
@base = base
@dir = dir
@name = name
@ext = File.extname(name)
@basename = File.basename(name, ".*")
@path = from_plugin ? File.join(base, dir, name) : site.in_source_dir(base, dir, name)
process
self.data ||= HashWithDotAccess::Hash.new
Bridgetown::Hooks.trigger :generated_pages, :post_init, self
end
# rubocop:enable Metrics/ParameterLists
# Returns the contents as a String.
def to_s
output || content || ""
end
# Accessor for data properties by Liquid
#
# @param property [String] name of the property to retrieve
#
# @return [Object]
def [](property)
data[property]
end
# @return [Array<Bridgetown::Slot>]
def slots
@slots ||= []
end
# The generated directory into which the page will be placed
# upon generation. This is derived from the permalink or, if
# permalink is absent, will be '/'
#
# @return [String]
def dir
if url.end_with?("/")
url
else
url_dir = File.dirname(url)
url_dir.end_with?("/") ? url_dir : "#{url_dir}/"
end
end
# Liquid representation of current page
#
# @return [Bridgetown::Drops::GeneratedPageDrop]
def to_liquid
@liquid_drop ||= Drops::GeneratedPageDrop.new(self)
end
# The full path and filename of the post. Defined in the YAML of the post
# body
def permalink
data&.permalink
end
def add_permalink_suffix(template, permalink_style)
template = template.dup
case permalink_style
when :pretty, :simple
template << "/"
else
template << "/" if permalink_style.to_s.end_with?("/")
template << ":output_ext" if permalink_style.to_s.end_with?(".*")
end
template
end
# The template of the permalink.
#
# @return [String]
def template
if !html?
"/:dir/:basename:output_ext"
elsif index?
"/:dir/"
else
add_permalink_suffix("/:dir/:basename", site.permalink_style)
end
end
# The generated relative url of this page. e.g. /about.html.
#
# @return [String]
def url
return @url if @url
tmpl = permalink || template
placeholders = { dir: @dir, basename:, output_ext: }
results = placeholders.inject(tmpl) do |result, token|
break result if result.index(":").nil?
if token.last.nil?
# Remove leading "/" to avoid generating urls with `//`
result.gsub("/:#{token.first}", "")
else
result.gsub(":#{token.first}", token.last)
end
end.then { Addressable::URI.normalize_component _1 }
@url = "/#{results.sub("#", "%23")}".gsub("..", "/").gsub("./", "").squeeze("/")
end
alias_method :relative_url, :url
# Layout associated with this resource
# This will output a warning if the layout can't be found.
#
# @return [Bridgetown::Layout]
def layout
return @layout if @layout
return if no_layout?
@layout = site.layouts[data.layout].tap do |layout|
unless layout
Bridgetown.logger.warn "Generated Page:", "Layout '#{data.layout}' " \
"requested via #{relative_path} does not exist."
end
end
end
# Overide this in subclasses for custom initialization behavior
def process
# no-op by default
end
# The path to the source file
def path
# TODO: is this trip really necessary?!
data.fetch("path") { relative_path }
end
# The path to the page source file, relative to the site source
def relative_path
@relative_path ||= File.join(*[@dir, @name].map(&:to_s).reject(&:empty?)).delete_prefix("/")
end
# The output extension of the page.
#
# @return [String]
def output_ext
@output_ext ||= permalink_ext || converter_output_ext
end
def permalink_ext
page_permalink = permalink
if page_permalink &&
!page_permalink.end_with?("/")
permalink_ext = File.extname(page_permalink)
permalink_ext unless permalink_ext.empty?
end
end
def converter_output_ext
if output_exts.size == 1
output_exts.last
else
output_exts[-2]
end
end
def output_exts
@output_exts ||= converters.filter_map do |c|
c.output_ext(extname)
end
end
# @return [Array<Bridgetown::Converter>]
def converters
@converters ||= site.matched_converters_for_convertible(self)
end
def transform! # rubocop:todo Metrics
Bridgetown.logger.debug "Transforming:", relative_path
internal_error = nil
Signalize.effect do
if !@fast_refresh_order && @previously_transformed_content
self.content = @previously_transformed_content
mark_for_fast_refresh! if site.config.fast_refresh && write?
next
end
trigger_hooks :pre_render
@previously_transformed_content ||= content
self.content = transform_content(self)
place_in_layout? ? place_into_layouts : self.output = content.dup
trigger_hooks :post_render
rescue StandardError, SyntaxError => e
internal_error = e
end
raise internal_error if internal_error
self
end
def place_into_layouts
Bridgetown.logger.debug "Placing in Layouts:", relative_path
rendered_output = content.dup
site.validated_layouts_for(self, data.layout).each do |layout|
rendered_output = transform_with_layout(layout, rendered_output, self)
end
self.output = rendered_output
end
# Obtain destination path.
#
# @param dest [String] path to the destination dir
#
# @return [String]
def destination(dest)
path = site.in_dest_dir(dest, Utils.unencode_uri(url))
path = File.join(path, "index") if url.end_with?("/")
path << output_ext unless path.end_with? output_ext
path
end
# Write the generated page file to the destination directory.
#
# @param dest [String] path to the destination dir
def write(dest)
path = destination(dest)
FileUtils.mkdir_p(File.dirname(path))
Bridgetown.logger.debug "Writing:", path
File.write(path, output, mode: "wb")
unmark_for_fast_refresh!
Bridgetown::Hooks.trigger :generated_pages, :post_write, self
end
# Returns the object as a debug String.
def inspect
"#<#{self.class} #{relative_path}>"
end
# Returns the Boolean of whether this Page is HTML or not.
def html?
HTML_EXTENSIONS.include?(output_ext)
end
# Returns the Boolean of whether this Page is an index file or not.
def index?
basename == "index"
end
def trigger_hooks(hook_name, *args)
Bridgetown::Hooks.trigger :generated_pages, hook_name, self, *args
end
def type
:generated_pages
end
def write?
true
end
def mark_for_fast_refresh!
@fast_refresh_order = site.fast_refresh_ordering
site.fast_refresh_ordering += 1
end
def unmark_for_fast_refresh!
@fast_refresh_order = nil
original_resource&.unmark_for_fast_refresh!
end
end
end