Class | Erubis::TinyEruby |
In: |
lib/erubis/tiny.rb
|
Parent: | Object |
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
EMBEDDED_PATTERN | = | /<%(=+|\#)?(.*?)-?%>/m |
src | [R] |
# File lib/erubis/tiny.rb, line 20 20: def initialize(input=nil) 21: @src = convert(input) if input 22: end
# File lib/erubis/tiny.rb, line 27 27: def convert(input) 28: src = "_buf = '';" # preamble 29: pos = 0 30: input.scan(EMBEDDED_PATTERN) do |indicator, code| 31: match = Regexp.last_match 32: len = match.begin(0) - pos 33: text = input[pos, len] 34: pos = match.end(0) 35: #src << " _buf << '" << escape_text(text) << "';" 36: text.gsub!(/['\\]/, '\\\\\&') 37: src << " _buf << '" << text << "';" unless text.empty? 38: if !indicator # <% %> 39: src << code << ";" 40: elsif indicator == '#' # <%# %> 41: src << ("\n" * code.count("\n")) 42: else # <%= %> 43: src << " _buf << (" << code << ").to_s;" 44: end 45: end 46: #rest = $' || input # ruby1.8 47: rest = pos == 0 ? input : input[pos..-1] # ruby1.9 48: #src << " _buf << '" << escape_text(rest) << "';" 49: rest.gsub!(/['\\]/, '\\\\\&') 50: src << " _buf << '" << rest << "';" unless rest.empty? 51: src << "\n_buf.to_s\n" # postamble 52: return src 53: end
# File lib/erubis/tiny.rb, line 63 63: def evaluate(_context=Object.new) 64: if _context.is_a?(Hash) 65: _obj = Object.new 66: _context.each do |k, v| _obj.instance_variable_set("@#{k}", v) end 67: _context = _obj 68: end 69: _context.instance_eval @src 70: end