JezK
Edit File: tiny.rb
## ## $Release: 2.7.0 $ ## copyright(c) 2006-2011 kuwata-lab.com all rights reserved. ## module Erubis ## ## tiny and the simplest implementation of eRuby ## ## ex. ## eruby = TinyEruby.new(File.read('example.rhtml')) ## print eruby.src # print ruby code ## print eruby.result(binding()) # eval ruby code with Binding object ## print eruby.evalute(context) # eval ruby code with context object ## class TinyEruby def initialize(input=nil) @src = convert(input) if input end attr_reader :src EMBEDDED_PATTERN = /<%(=+|\#)?(.*?)-?%>/m def convert(input) src = "_buf = '';" # preamble pos = 0 input.scan(EMBEDDED_PATTERN) do |indicator, code| m = Regexp.last_match text = input[pos...m.begin(0)] pos = m.end(0) #src << " _buf << '" << escape_text(text) << "';" text.gsub!(/['\\]/, '\\\\\&') src << " _buf << '" << text << "';" unless text.empty? if !indicator # <% %> src << code << ";" elsif indicator == '#' # <%# %> src << ("\n" * code.count("\n")) else # <%= %> src << " _buf << (" << code << ").to_s;" end end #rest = $' || input # ruby1.8 rest = pos == 0 ? input : input[pos..-1] # ruby1.9 #src << " _buf << '" << escape_text(rest) << "';" rest.gsub!(/['\\]/, '\\\\\&') src << " _buf << '" << rest << "';" unless rest.empty? src << "\n_buf.to_s\n" # postamble return src end #def escape_text(text) # return text.gsub!(/['\\]/, '\\\\\&') || text #end def result(_binding=TOPLEVEL_BINDING) eval @src, _binding end def evaluate(_context=Object.new) if _context.is_a?(Hash) _obj = Object.new _context.each do |k, v| _obj.instance_variable_set("@#{k}", v) end _context = _obj end _context.instance_eval @src end end module PI end class PI::TinyEruby def initialize(input=nil, options={}) @escape = options[:escape] || 'Erubis::XmlHelper.escape_xml' @src = convert(input) if input end attr_reader :src EMBEDDED_PATTERN = /(^[ \t]*)?<\?rb(\s.*?)\?>([ \t]*\r?\n)?|@(!+)?\{(.*?)\}@/m def convert(input) src = "_buf = '';" # preamble pos = 0 input.scan(EMBEDDED_PATTERN) do |lspace, stmt, rspace, indicator, expr| match = Regexp.last_match len = match.begin(0) - pos text = input[pos, len] pos = match.end(0) #src << " _buf << '" << escape_text(text) << "';" text.gsub!(/['\\]/, '\\\\\&') src << " _buf << '" << text << "';" unless text.empty? if stmt # <?rb ... ?> if lspace && rspace src << "#{lspace}#{stmt}#{rspace}" else src << " _buf << '" << lspace << "';" if lspace src << stmt << ";" src << " _buf << '" << rspace << "';" if rspace end else # ${...}, $!{...} if !indicator src << " _buf << " << @escape << "(" << expr << ");" elsif indicator == '!' src << " _buf << (" << expr << ").to_s;" end end end #rest = $' || input # ruby1.8 rest = pos == 0 ? input : input[pos..-1] # ruby1.9 #src << " _buf << '" << escape_text(rest) << "';" rest.gsub!(/['\\]/, '\\\\\&') src << " _buf << '" << rest << "';" unless rest.empty? src << "\n_buf.to_s\n" # postamble return src end #def escape_text(text) # return text.gsub!(/['\\]/, '\\\\\&') || text #end def result(_binding=TOPLEVEL_BINDING) eval @src, _binding end def evaluate(_context=Object.new) if _context.is_a?(Hash) _obj = Object.new _context.each do |k, v| _obj.instance_variable_set("@#{k}", v) end _context = _obj end _context.instance_eval @src end end end