Class: Collectd::DSL

Inherits:
Object
  • Object
show all
Defined in:
lib/collectd-dsl.rb

Constant Summary collapse

VERSION = 
"0.3.5"

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(&block) ⇒ DSL

Returns a new instance of DSL.



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# File 'lib/collectd-dsl.rb', line 5

def initialize(&block)
  @directives = []
  @indent = 0
  instance_eval(&block) if block_given?
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_name, *args) ⇒ Object 



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# File 'lib/collectd-dsl.rb', line 27

def method_missing method_name, *args
  mapped_args = args.map do |a|
    if a.class == String 
      "\"" + a.to_s + "\""
    else
      a.to_s
    end
  end.join(" ")
    
  mapped_args = (" " + mapped_args) unless mapped_args.empty?

  camel_method_name = snake_to_camel method_name.to_s
  if block_given?
     @directives << indent("<#{camel_method_name}#{mapped_args}>")
    @indent += 1
    yield # rely on the outer scope
    @indent -= 1
    @directives << indent("</#{camel_method_name}>")
  else
    @directives << indent("#{camel_method_name}#{mapped_args}")
  end
end

Class Method Details

.parse(&block) ⇒ Object 



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# File 'lib/collectd-dsl.rb', line 15

def self.parse(&block)
  DSL.new(&block).dump if block_given?
end

Instance Method Details

#dump ⇒ Object 



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# File 'lib/collectd-dsl.rb', line 11

def dump
  @directives.join("\n") + "\n"
end

#indent(str) ⇒ Object 



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# File 'lib/collectd-dsl.rb', line 19

def indent str
  ("\t" * @indent) + str
end

#snake_to_camel(method_name) ⇒ Object 



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# File 'lib/collectd-dsl.rb', line 23

def snake_to_camel method_name
  method_name.split("_").map{|w| w.capitalize }.join("")
end