77 lines
1.4 KiB
Plaintext
77 lines
1.4 KiB
Plaintext
# << Usage >>
|
|
|
|
# you can feed this README to irb and see the result
|
|
# $ irb README
|
|
|
|
# IMPORTANT NOTICE:
|
|
# be careful with big *fixnum* (plain int) values in configs
|
|
# int is 32 bit, but ruby fixnum is only 31!
|
|
# For example, 2100000000 will be read as -47483648.
|
|
|
|
require 'rconfig'
|
|
c = Config.new
|
|
|
|
c.read!('test.cfg')
|
|
# => IOError
|
|
c.read('test.cfg')
|
|
# => false
|
|
|
|
p c['some_var']
|
|
# => SettingNotFoundError
|
|
# note: Config#lookup is alias for Config#[]
|
|
|
|
c.append 'fixnum', Config::Fixnum.new(150)
|
|
# #<Config::Fixnum...>
|
|
|
|
f1 = Config::Fixnum.new(1)
|
|
c.append 'another_fixnum', f1
|
|
|
|
f2 = Config::Fixnum.new(256)
|
|
c.append 'next_fixnum', f2
|
|
|
|
p c.size
|
|
# => 3
|
|
|
|
c.delete(f1) # by element
|
|
c.delete(0) # by index
|
|
c.delete('next_fixnum') # by name
|
|
# note: (at now) you cannot delete nested elements by Config#delete
|
|
# you can do c['nested.element'].parent.delete(c['nested.element'])
|
|
|
|
p c.size
|
|
# => 0
|
|
|
|
l = Config::List.new
|
|
c.append 'the_list', l
|
|
|
|
l.append Config::String.new("abcdef")
|
|
l << Config::Float.new(3.14)
|
|
# note: Config::List#append and Config::Array#append both have
|
|
# aliases Config::[Aggregate]#<<
|
|
|
|
p l.name
|
|
# => "the_list"
|
|
|
|
p l.index
|
|
# => 0
|
|
|
|
p l.root?
|
|
# => false
|
|
|
|
p l.size
|
|
# => 3
|
|
|
|
l[0].format = Config::FORMAT_HEX
|
|
|
|
p l[1].value
|
|
# => 3.14
|
|
|
|
l[1].value = 2.71828
|
|
|
|
c.write 'test.cfg'
|
|
|
|
# you will get test.cfg with following contents:
|
|
#
|
|
# the_list = ( "abcdef", 2.71828, 0x2A );
|
|
#
|