Method: Cfruby::Cfp_MapOptions#map

Defined in:
lib/libcfenjin/cfp_mapoptions.rb

#map(action, attribs) ⇒ Object

Attributes are mapped including default values. The first options found in the map is returned. If an option is not on the MAP an exception is raised. Mind: options handled by the Cfruby parser itself are deleted beforehand (see cfrubyruntime.rb) by a call to pop_options.

Each option that is legal should be in the list. The translated value is pointed to. The second parameter is the default value - which can be a method that is called instead to figure out the right value. Examples:

Just translate the value of mode m=444 ‘mode’ => [ :mode ] Pass the default value of mode if not given ‘mode’ => [ :mode, 0644 ] Call the translator method on m=444, passing the value as a parameter ‘mode’ => [ :mode, translate_mode ]



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# File 'lib/libcfenjin/cfp_mapoptions.rb', line 160

def map action,attribs
  ret_options = {}
  argslist = expand_synonyms(attribs) # keeps track of found items
  # argslist contains Cfruby style options list, e.g. 
  #   {"mode"=>0644, "owner"=>"user", "group"=>"users"}
  #
  # with this list walk the whole map
  MAP[action].each do | maps |
    maps.each do | option, a |
      name = synonym(option)
      value = synonym(argslist[name])
      parname = a[0]
      default = a[1]
      # p [name,value,default,a]
      isproc = (default and default.kind_of? Proc)
        if isproc
        # it is an in place method, so let it handle the request
        ret_options.merge! default.call(name,value)
        argslist.delete(name)
        else  
          if value != nil
            # ---- a value was passed (e.g. mode=0644)
          # Use the actual value
          ret_options[parname] = value
            argslist.delete(name)
        elsif default != nil
            # ---- no value passed, but a default value is available
            ret_options[parname] = default
            argslist.delete(name)
          else
            # ---- No value and no default! Just means this is a legal and
            # unused parameter
            next
          end
        end
    end
  end
  if argslist.size > 0
    raise UnknownParameterError,"Unresolved options for action '#{action}': <#{argslist.keys.join(',')}>"
  end
  # p [ret_options]
  ret_options
end