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# frozen_string_literal: true
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] = ""
properties[:postamble] = "@output_buffer.to_s"
properties[:bufvar] = "@output_buffer"
properties[:escapefunc] = ""
super
end
def evaluate(action_view_erb_handler_context)
src = @src
view = Class.new(ActionView::Base) {
include action_view_erb_handler_context._routes.url_helpers
class_eval("define_method(:_template) { |local_assigns, output_buffer| #{src} }", @filename || "(erubi)", 0)
}.empty
view.run(:_template, nil, {}, ActionView::OutputBuffer.new)
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
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