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Contents
require 'albacore/paths'
module Albacore
# a small DSL to mix into your configuration classes
module ConfigDSL
# creates a new attr_writer for the symbols passed,
# such that a write to that method will normalise the paths
# of the written value: you can pass an optional callback
def attr_path *syms, &block
given = block_given?
syms.each do |sym|
# this is the callback method when the value is set
self.send(:define_method, :"__on_#{sym}") do |val|
instance_exec(val, &block) if given
end
# this is the setter, it also calls the callback method
# defined above.
self.class_eval(
%{def #{sym}= val
@#{sym} = ::Albacore::Paths.normalise_slashes val
__on_#{sym} @#{sym}
end})
end
end
# read/write attribute with rewriting of set values to
# match the system's paths
def attr_path_accessor *syms, &block
given = block_given?
syms.each do |sym|
# this is the callback method when the value is set
self.send(:define_method, :"__on_#{sym}") do |val|
instance_exec(val, &block) if given
end
# this is the setter and getter. The setter also calls
# the callback method defined above.
self.class_eval(
%{def #{sym}= val
@#{sym} = ::Albacore::Paths.normalise_slashes val
__on_#{sym} @#{sym}
end})
self.class_eval(
%{def #{sym}
@#{sym}
end})
end
end
end
end
Version data entries
49 entries across 49 versions & 1 rubygems