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haml--haml/lib/haml/template.rb
2010-03-29 20:01:16 -07:00

86 lines
2.9 KiB
Ruby

require 'haml/engine'
module Haml
# The class that keeps track of the global options for Haml within Rails.
module Template
extend self
@options = {}
# The options hash for Haml when used within Rails.
# See {file:HAML_REFERENCE.md#haml_options the Haml options documentation}.
#
# @return [{Symbol => Object}]
attr_accessor :options
# Enables integration with the Rails 2.2.5+ XSS protection,
# if it's available and enabled.
#
# @return [Boolean] Whether the XSS integration was enabled.
def try_enabling_xss_integration
return false unless ActionView::Base.respond_to?(:xss_safe?) && ActionView::Base.xss_safe?
Haml::Template.options[:escape_html] = true
Haml::Util.module_eval {def rails_xss_safe?; true; end}
require 'haml/helpers/xss_mods'
Haml::Helpers.send(:include, Haml::Helpers::XssMods)
Haml::Precompiler.module_eval do
def precompiled_method_return_value_with_haml_xss
"::Haml::Util.html_safe(#{precompiled_method_return_value_without_haml_xss})"
end
alias_method :precompiled_method_return_value_without_haml_xss, :precompiled_method_return_value
alias_method :precompiled_method_return_value, :precompiled_method_return_value_with_haml_xss
end
true
end
end
end
if Haml::Util.rails_env == "production"
Haml::Template.options[:ugly] = true
end
# Decide how we want to load Haml into Rails.
# Patching was necessary for versions <= 2.0.1,
# but we can make it a normal handler for higher versions.
if defined?(ActionView::TemplateHandler) ||
(defined?(ActionView::Template) && defined?(ActionView::Template::Handler))
require 'haml/template/plugin'
else
require 'haml/template/patch'
end
# Enable XSS integration. Use Rails' after_initialize method if possible
# so that integration will be checked after the rails_xss plugin is loaded
# (for Rails 2.3.* where it's not enabled by default).
if defined?(Rails.configuration.after_initialize)
Rails.configuration.after_initialize {Haml::Template.try_enabling_xss_integration}
else
Haml::Template.try_enabling_xss_integration
end
if Haml::Util.rails_root
# Update init.rb to the current version
# if it's out of date.
#
# We can probably remove this as of v1.9,
# because the new init file is sufficiently flexible
# to not need updating.
rails_init_file = File.join(Haml::Util.rails_root, 'vendor', 'plugins', 'haml', 'init.rb')
haml_init_file = Haml::Util.scope('init.rb')
begin
if File.exists?(rails_init_file)
require 'fileutils'
FileUtils.cp(haml_init_file, rails_init_file) unless FileUtils.cmp(rails_init_file, haml_init_file)
end
rescue SystemCallError
Haml::Util.haml_warn <<END
HAML WARNING:
#{rails_init_file} is out of date and couldn't be automatically updated.
Please run `haml --rails #{File.expand_path(Haml::Util.rails_root)}' to update it.
END
end
end