Class | Erubis::Engine |
In: |
erubis/engine.rb
|
Parent: | Object |
(abstract) abstract engine class. subclass must include evaluator and converter module.
load file, write cache file, and return engine object. this method create code cache file automatically. cachefile name can be specified with properties[:cachename], or filname + ‘cache’ is used as default.
# File erubis/engine.rb, line 48 def self.load_file(filename, properties={}) cachename = properties[:cachename] || (filename + '.cache') properties[:filename] = filename if test(?f, cachename) && File.mtime(filename) <= File.mtime(cachename) engine = self.new(nil, properties) engine.src = File.read(cachename) else input = File.open(filename, 'rb') {|f| f.read } engine = self.new(input, properties) File.open(cachename, 'wb') do |f| f.flock(File::LOCK_EX) f.write(engine.src) f.flush() end end engine.src.untaint # ok? return engine end
convert input string and set it to @src
# File erubis/engine.rb, line 37 def convert!(input) @src = convert(input) end
helper method to convert and evaluate input text with context object. context may be Binding, Hash, or Object.
# File erubis/engine.rb, line 72 def process(input, context=nil, filename=nil) code = convert(input) filename ||= '(erubis)' if context.is_a?(Binding) return eval(code, context, filename) else context = Context.new(context) if context.is_a?(Hash) return context.instance_eval(code, filename) end end
helper method evaluate Proc object with contect object. context may be Binding, Hash, or Object.
# File erubis/engine.rb, line 88 def process_proc(proc_obj, context=nil, filename=nil) if context.is_a?(Binding) filename ||= '(erubis)' return eval(proc_obj, context, filename) else context = Context.new(context) if context.is_a?(Hash) return context.instance_eval(&proc_obj) end end