class ConfigStruct

the Configstruct object inherits from OpenStruct and adds some features:

set default values
redirects output and input IO to custom streams
writes file on disk as yaml

Public Class Methods

new(options = nil, input = STDIN, output = STDOUT, unless_set = false) click to toggle source

creates new object

Calls superclass method

# File lib/configstruct.rb, line 12
def initialize(options = nil, input = STDIN, output = STDOUT, unless_set = false)
  super(options)
  @input = input
  @output = output
  @unless_set = unless_set
  set_defaults
  prepare_dirs
  addvalues
end

Public Instance Methods

addvalues() click to toggle source

adds value in the configuration hash

# File lib/configstruct.rb, line 34
def addvalues
  setup unless File.exist? self.basefile
  YAML.load_file(self.basefile).each do |k, v|
    unless @unless_set && defined? self[v]
      new_ostruct_member(k)
      send("#{k}=", v)
    end
  end
end

default(var, value) click to toggle source

attributes value if it is nil

# File lib/configstruct.rb, line 50
def default(var, value)
  send(var).nil? && send("#{var}=", value)
end

gets(*args) click to toggle source

redirect gets fromm the initialized input

# File lib/configstruct.rb, line 77
def gets(*args)
  @input.gets *args
end

prepare_dirs() click to toggle source

creates dir where to store config if it does not exist

# File lib/configstruct.rb, line 29
def prepare_dirs
  FileUtils.mkdir_p self.basedir unless Dir.exist? self.basedir
end

print(*string) click to toggle source

redirect print to the initialized output

# File lib/configstruct.rb, line 67
def print(*string)
  @output.print *string
end

printf(string, *args) click to toggle source

redirect printf to the initialized output

# File lib/configstruct.rb, line 72
def printf(string, *args)
  @output.printf string, *args
end

puts(*string) click to toggle source

redirect puts to the initialized output

# File lib/configstruct.rb, line 62
def puts(*string)
  @output.puts *string
end

set_defaults() click to toggle source

sets defaults value for initializer

# File lib/configstruct.rb, line 23
def set_defaults
  default :basedir, '/tmp'
  default :basefile, File.join(self.basedir, 'config.yml')
end

setup() click to toggle source

creates a blank config file with empty values

# File lib/configstruct.rb, line 45
def setup
  write Hash.new
end

write(values) click to toggle source

writes config faile on disk as yaml

# File lib/configstruct.rb, line 55
def write(values)
  File.open(self.basefile, 'w') do |f|
    f.write YAML.dump(values)
  end
end