Method: Exception.source_extract

Defined in:
lib/nitro/compiler/errors.rb

.source_extract(step, indent = 0) ⇒ Object

Extract the source arround the error line.



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# File 'lib/nitro/compiler/errors.rb', line 42

def source_extract(step, indent = 0)
  begin
    file, no = file_and_line_no(step)        
    source = File.read(file)

    if file =~ /\.xhtml$/
      source = Compiler.new(Nitro::Controller).transform_template(:action, source)
      no -= 2
    end

    source = source.split("\n")
    start = (no-1) - SOURCE_RADIUS
    finish = (no-1) + SOURCE_RADIUS
    start = 0 if start < 0
    finish = source.size if finish > source.size
  
    number = start
    extract = source[start..finish].collect do |line| 
      number += 1
      line = line.gsub(/; @out #{Nitro::TemplateMixin::START_DELIM}/, ' ?>').gsub(/#{Nitro::TemplateMixin::END_DELIM}/, '<?r ')
      "#{' ' * indent}#{number}: #{line}"
    end  

    return extract.join("\n")
  rescue Object => ex
    ''
  end
end