module ActionView #:nodoc:
class Template
class Path
attr_reader :path, :paths
delegate :hash, :inspect, :to => :path
def initialize(path)
raise ArgumentError, "path already is a Path class" if path.is_a?(Path)
@path = path.freeze
end
def to_s
if defined?(RAILS_ROOT)
path.to_s.sub(/^#{Regexp.escape(File.expand_path(RAILS_ROOT))}\//, '')
else
path.to_s
end
end
def to_str
path.to_str
end
def ==(path)
to_str == path.to_str
end
def eql?(path)
to_str == path.to_str
end
# Returns a ActionView::Template object for the given path string. The
# input path should be relative to the view path directory,
# +hello/index.html.erb+. This method also has a special exception to
# match partial file names without a handler extension. So
# +hello/index.html+ will match the first template it finds with a
# known template extension, +hello/index.html.erb+. Template extensions
# should not be confused with format extensions +html+, +js+, +xml+,
# etc. A format must be supplied to match a formated file. +hello/index+
# will never match +hello/index.html.erb+.
def [](path)
templates_in_path do |template|
if template.accessible_paths.include?(path)
return template
end
end
nil
end
private
def templates_in_path
(Dir.glob("#{@path}/**/*/**") | Dir.glob("#{@path}/**")).each do |file|
yield create_template(file) unless File.directory?(file)
end
end
def create_template(file)
Template.new(file.split("#{self}/").last, self)
end
end
class EagerPath < Path
def initialize(path)
super
@paths = {}
templates_in_path do |template|
template.load!
template.accessible_paths.each do |path|
@paths[path] = template
end
end
@paths.freeze
end
def [](path)
@paths[path]
end
end
extend TemplateHandlers
extend ActiveSupport::Memoizable
include Renderable
# Templates that are exempt from layouts
@@exempt_from_layout = Set.new([/\.rjs$/])
# Don't render layouts for templates with the given extensions.
def self.exempt_from_layout(*extensions)
regexps = extensions.collect do |extension|
extension.is_a?(Regexp) ? extension : /\.#{Regexp.escape(extension.to_s)}$/
end
@@exempt_from_layout.merge(regexps)
end
attr_accessor :filename, :load_path, :base_path
attr_accessor :locale, :name, :format, :extension
delegate :to_s, :to => :path
def initialize(template_path, load_paths = [])
template_path = template_path.dup
@load_path, @filename = find_full_path(template_path, load_paths)
@base_path, @name, @locale, @format, @extension = split(template_path)
@base_path.to_s.gsub!(/\/$/, '') # Push to split method
# Extend with partial super powers
extend RenderablePartial if @name =~ /^_/
end
def accessible_paths
paths = []
paths << path
paths << path_without_extension
if multipart?
formats = format.split(".")
paths << "#{path_without_format_and_extension}.#{formats.first}"
paths << "#{path_without_format_and_extension}.#{formats.second}"
end
paths
end
def format_and_extension
(extensions = [format, extension].compact.join(".")).blank? ? nil : extensions
end
memoize :format_and_extension
def multipart?
format && format.include?('.')
end
def content_type
format.gsub('.', '/')
end
def mime_type
Mime::Type.lookup_by_extension(format) if format
end
memoize :mime_type
def path
[base_path, [name, locale, format, extension].compact.join('.')].compact.join('/')
end
memoize :path
def path_without_extension
[base_path, [name, locale, format].compact.join('.')].compact.join('/')
end
memoize :path_without_extension
def path_without_format_and_extension
[base_path, [name, locale].compact.join('.')].compact.join('/')
end
memoize :path_without_format_and_extension
def relative_path
path = File.expand_path(filename)
path.sub!(/^#{Regexp.escape(File.expand_path(RAILS_ROOT))}\//, '') if defined?(RAILS_ROOT)
path
end
memoize :relative_path
def exempt_from_layout?
@@exempt_from_layout.any? { |exempted| path =~ exempted }
end
def mtime
File.mtime(filename)
end
memoize :mtime
def source
File.read(filename)
end
memoize :source
def method_segment
relative_path.to_s.gsub(/([^a-zA-Z0-9_])/) { $1.ord }
end
memoize :method_segment
def render_template(view, local_assigns = {})
render(view, local_assigns)
rescue Exception => e
raise e unless filename
if TemplateError === e
e.sub_template_of(self)
raise e
else
raise TemplateError.new(self, view.assigns, e)
end
end
def stale?
File.mtime(filename) > mtime
end
def recompile?
!@cached
end
def load!
@cached = true
freeze
end
private
def valid_extension?(extension)
!Template.registered_template_handler(extension).nil?
end
def valid_locale?(locale)
I18n.available_locales.include?(locale.to_sym)
end
def find_full_path(path, load_paths)
load_paths = Array(load_paths) + [nil]
load_paths.each do |load_path|
file = load_path ? "#{load_path.to_str}/#{path}" : path
return load_path, file if File.file?(file)
end
raise MissingTemplate.new(load_paths, path)
end
# Returns file split into an array
# [base_path, name, locale, format, extension]
def split(file)
if m = file.match(/^(.*\/)?([^\.]+)\.(.*)$/)
base_path = m[1]
name = m[2]
extensions = m[3]
else
return
end
locale = nil
format = nil
extension = nil
if m = extensions.match(/^(\w+)?\.?(\w+)?\.?(\w+)?\.?/)
if valid_locale?(m[1]) && m[2] && valid_extension?(m[3]) # All three
locale = m[1]
format = m[2]
extension = m[3]
elsif m[1] && m[2] && valid_extension?(m[3]) # Multipart formats
format = "#{m[1]}.#{m[2]}"
extension = m[3]
elsif valid_locale?(m[1]) && valid_extension?(m[2]) # locale and extension
locale = m[1]
extension = m[2]
elsif valid_extension?(m[2]) # format and extension
format = m[1]
extension = m[2]
elsif valid_extension?(m[1]) # Just extension
extension = m[1]
else # No extension
format = m[1]
end
end
[base_path, name, locale, format, extension]
end
end
end
