Class: ORB::RailsDerp

Inherits:
Object
  • Object
show all
Defined in:
lib/orb/rails_derp.rb

Constant Summary collapse

ENCODING_FLAG = 
'#.*coding[:=]\s*(\S+)[ \t]*'
ENCODING_TAG = 
Regexp.new("\\A(<%#{ENCODING_FLAG}-?%>)[ \\t]*")

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.call(template, source = nil) ⇒ Object 



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# File 'lib/orb/rails_derp.rb', line 7

def call(template, source = nil)
  new.call(template, source)
end

Instance Method Details

#call(template, source) ⇒ Object 



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# File 'lib/orb/rails_derp.rb', line 54

def call(template, source)
  # First, convert to BINARY, so in case the encoding is
  # wrong, we can still find an encoding tag
  # (<%# encoding %>) inside the String using a regular
  # expression
  template_source = source.b

  erb = template_source.gsub(ENCODING_TAG, "")
  encoding = ::Regexp.last_match(2)

  erb.force_encoding valid_encoding(source.dup, encoding)

  # Always make sure we return a String in the default_internal
  erb.encode!

  # Strip trailing newlines from the template if enabled
  erb.chomp! if strip_trailing_newlines

  options = {
    escape: (self.class.escape_ignore_list.include? template.type),
    trim: (self.class.erb_trim_mode == "-")
  }

  if ActionView::Base.annotate_rendered_view_with_filenames && template.format == :html
    options[:preamble] = "@output_buffer.safe_append='<!-- BEGIN #{template.short_identifier} -->';"
    options[:postamble] = "@output_buffer.safe_append='<!-- END #{template.short_identifier} -->';@output_buffer"
  end

  ActionView::Template::Handlers::ERB::Erubi.new(erb, options).src
end

#translate_location(spot, backtrace_location, source) ⇒ Object

Translate an error location returned by ErrorHighlight to the correct source location inside the template.



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# File 'lib/orb/rails_derp.rb', line 30

def translate_location(spot, backtrace_location, source)
  Rails.logger.debug "in translate_location"
  Rails.logger.debug ""
  Rails.logger.debug spot
  Rails.logger.debug ""
  Rails.logger.debug backtrace_location
  Rails.logger.debug ""
  Rails.logger.debug source

  # Tokenize the source line
  tokens = ORB::Utils::ERB.tokenize(source.lines[backtrace_location.lineno - 1])
  new_first_column = find_offset(spot[:snippet], tokens, spot[:first_column])
  lineno_delta = spot[:first_lineno] - backtrace_location.lineno
  spot[:first_lineno] -= lineno_delta
  spot[:last_lineno] -= lineno_delta

  column_delta = spot[:first_column] - new_first_column
  spot[:first_column] -= column_delta
  spot[:last_column] -= column_delta
  spot[:script_lines] = source.lines

  spot
end