1 module Puppet::Parser::Functions
3 newfunction(:validate_slength, :doc => <<-'ENDHEREDOC') do |args|
4 Validate that the first argument is a string (or an array of strings), and
5 less/equal to than the length of the second argument. An optional third
6 parameter can be given the minimum length. It fails if the first
7 argument is not a string or array of strings, and if arg 2 and arg 3 are
8 not convertable to a number.
10 The following values will pass:
12 validate_slength("discombobulate",17)
13 validate_slength(["discombobulate","moo"],17)
14 validate_slength(["discombobulate","moo"],17,3)
16 The following valueis will not:
18 validate_slength("discombobulate",1)
19 validate_slength(["discombobulate","thermometer"],5)
20 validate_slength(["discombobulate","moo"],17,10)
24 function_deprecation([:validate_slength, 'This method is deprecated, please use the stdlib validate_legacy function, with String[]. There is further documentation for validate_legacy function in the README.'])
26 raise Puppet::ParseError, "validate_slength(): Wrong number of arguments (#{args.length}; must be 2 or 3)" unless args.length == 2 or args.length == 3
28 input, max_length, min_length = *args
31 max_length = Integer(max_length)
32 raise ArgumentError if max_length <= 0
33 rescue ArgumentError, TypeError
34 raise Puppet::ParseError, "validate_slength(): Expected second argument to be a positive Numeric, got #{max_length}:#{max_length.class}"
39 min_length = Integer(min_length)
40 raise ArgumentError if min_length < 0
41 rescue ArgumentError, TypeError
42 raise Puppet::ParseError, "validate_slength(): Expected third argument to be unset or a positive Numeric, got #{min_length}:#{min_length.class}"
48 raise Puppet::ParseError, "validate_slength(): Expected second argument to be equal to or larger than third argument" unless max_length >= min_length
50 validator = lambda do |str|
51 unless str.length <= max_length and str.length >= min_length
52 raise Puppet::ParseError, "validate_slength(): Expected length of #{input.inspect} to be between #{min_length} and #{max_length}, was #{input.length}"
60 input.each_with_index do |arg, pos|
64 raise Puppet::ParseError, "validate_slength(): Expected element at array position #{pos} to be a String, got #{arg.class}"
68 raise Puppet::ParseError, "validate_slength(): Expected first argument to be a String or Array, got #{input.class}"