require "erubi" module ActionView class Template module Handlers class ERB class Erubi < ::Erubi::Engine # :nodoc: all def initialize(input, properties = {}) @newline_pending = 0 # Dup properties so that we don't modify argument properties = Hash[properties] properties[:preamble] = "@output_buffer = output_buffer || ActionView::OutputBuffer.new;" properties[:postamble] = "@output_buffer.to_s" properties[:bufvar] = "@output_buffer" properties[:escapefunc] = "" super end def evaluate(action_view_erb_handler_context) pr = eval("proc { #{@src} }", binding, @filename || "(erubi)") action_view_erb_handler_context.instance_eval(&pr) end private def add_text(text) return if text.empty? if text == "\n" @newline_pending += 1 else src << "@output_buffer.safe_append='" src << "\n" * @newline_pending if @newline_pending > 0 src << text.gsub(/['\\]/, '\\\\\&') src << "'.freeze;" @newline_pending = 0 end end BLOCK_EXPR = /\s*((\s+|\))do|\{)(\s*\|[^|]*\|)?\s*\Z/ def add_expression(indicator, code) flush_newline_if_pending(src) if (indicator == "==") || @escape src << "@output_buffer.safe_expr_append=" else src << "@output_buffer.append=" end if BLOCK_EXPR.match?(code) src << " " << code else src << "(" << code << ");" end end def add_code(code) flush_newline_if_pending(src) super end def add_postamble(_) flush_newline_if_pending(src) super end def flush_newline_if_pending(src) if @newline_pending > 0 src << "@output_buffer.safe_append='#{"\n" * @newline_pending}'.freeze;" @newline_pending = 0 end end end end end end end