Class: Nagoro::Pipe::Instruction

Inherits:
Base
  • Object
show all
Defined in:
lib/nagoro/pipe/instruction.rb

Overview

Instruction handles <??> instructions.

It is based on a simple interpolation with String#% and one argument, the content of the instruction.

If you want to add new instruction-formats, just add it to the Nagoro::Pipe::Instruction::INSTRUCTIONS Hash or use Nagoro::Pipe::Instruction::[] for convinience.

The name of the instruction is matched with ===, so you can use regular expressions as keys as well.

Syntax and results of available instructions:

<?js alert('Hello, World!'); ?>
# <script type="text/javascript"> alert('Hello, World!'); </script>

<?js:src /js/jquery.js ?>
# <script type="text/javascript" src="/js/jquery.js"></script>

<?css body{ color: #f00; } ?>
# <style type="text/css"> body{ color: #f00; } </style>

<?css:src /css/coderay.css ?>
# <style type="text/css" src="/css/coderay.css"></style>

How to add new instructions:

Nagoro::Pipe::Instruction['pre'] = '<pre>%s</pre>'
Nagoro::Pipe::Instruction[/strip/] = '#{%(%s).strip}'

Constant Summary collapse

INSTRUCTIONS = 
{
  'js'      => '<script type="text/javascript"> %s </script>',
  'js:src'  => '<script type="text/javascript" src="%s"></script>',
  'css'     => '<style type="text/css"> %s </style>',
  'css:src' => '<style type="text/css" src="%s"></style>',
}
DEFAULT = 
"<?%s %s ?>"

Constants inherited from Base

Base::EMPTY_TAG

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#append, #doctype, #initialize, #result, #tag_end, #tag_start, #tag_with, #text

Constructor Details

This class inherits a constructor from Nagoro::Pipe::Base

Class Method Details

.[](key) ⇒ Object 



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# File 'lib/nagoro/pipe/instruction.rb', line 58

def [](key)
  INSTRUCTIONS[key]
end

.[]=(key, value) ⇒ Object 



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# File 'lib/nagoro/pipe/instruction.rb', line 54

def []=(key, value)
  INSTRUCTIONS[key] = value
end

Instance Method Details

#instruction(name, instruction) ⇒ Object 



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# File 'lib/nagoro/pipe/instruction.rb', line 43

def instruction(name, instruction)
  instruction.to_s.strip!

  if custom = INSTRUCTIONS[name]
    @body << custom % instruction
  else
    @body << DEFAULT % [name, instruction]
  end
end