module Erubis::HeaderFooterEnhancer

experimental

allow header and footer in eRuby script

ex.

====================
## without header and footer
$ cat ex1.eruby
<% def list_items(list) %>
<%   for item in list %>
<li><%= item %></li>
<%   end %>
<% end %>

$ erubis -s ex1.eruby
_buf = []; def list_items(list)
;   for item in list
; _buf << '<li>'; _buf << ( item ).to_s; _buf << '</li>
';   end
; end
;
_buf.join

## with header and footer
$ cat ex2.eruby
<!--#header:
def list_items(list)
 #-->
<%  for item in list %>
<li><%= item %></li>
<%  end %>
<!--#footer:
end
 #-->

$ erubis -s -c HeaderFooterEruby ex4.eruby

def list_items(list)
 _buf = []; _buf << '
';  for item in list
; _buf << '<li>'; _buf << ( item ).to_s; _buf << '</li>
';  end
; _buf << '
';
_buf.join
end

====================

this is language-independent.

Constants

Attributes

header[RW]

Public Instance Methods

add_text(src, text) click to toggle source
Calls superclass method
# File lib/erubis/enhancer.rb, line 585
def add_text(src, text)
  m = nil
  text.scan(HEADER_FOOTER_PATTERN) do |txt, lspace, word, content, rspace|
    m = Regexp.last_match
    flag_trim = @trim && lspace && rspace
    super(src, txt)
    content = "#{lspace}#{content}#{rspace}" if flag_trim
    super(src, lspace) if !flag_trim && lspace
    instance_variable_set("@#{word}", content)
    super(src, rspace) if !flag_trim && rspace
  end
  #rest = $' || text                    # ruby1.8
  rest = m ? text[m.end(0)..-1] : text  # ruby1.9
  super(src, rest)
end
convert(input) click to toggle source
Calls superclass method
# File lib/erubis/enhancer.rb, line 603
def convert(input)
  source = super
  return @src = "#{@header}#{source}#{@footer}"
end