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# File 'lib/puppet/parser/functions/validate_slength.rb', line 7
newfunction(:validate_slength, doc: <<-DOC
@summary
Validate that the first argument is a string (or an array of strings), and less/equal to than the length of the second argument.
An optional third parameter can be given the minimum length. It fails if the first argument is not a string or array of strings,
and if arg 2 and arg 3 are not convertable to a number.
@return
validate that the first argument is a string (or an array of strings), and less/equal to than the length of the second argument. Fail compilation if any of the checks fail.
@example **Usage**
The following values will pass:
validate_slength("discombobulate",17)
validate_slength(["discombobulate","moo"],17)
validate_slength(["discombobulate","moo"],17,3)
The following valueis will not:
validate_slength("discombobulate",1)
validate_slength(["discombobulate","thermometer"],5)
validate_slength(["discombobulate","moo"],17,10)
DOC
) do |args|
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.'])
raise Puppet::ParseError, "validate_slength(): Wrong number of arguments (#{args.length}; must be 2 or 3)" unless args.length == 2 || args.length == 3
input, max_length, min_length = *args
begin
max_length = Integer(max_length)
raise ArgumentError if max_length <= 0
rescue ArgumentError, TypeError
raise Puppet::ParseError, "validate_slength(): Expected second argument to be a positive Numeric, got #{max_length}:#{max_length.class}"
end
if min_length
begin
min_length = Integer(min_length)
raise ArgumentError if min_length < 0
rescue ArgumentError, TypeError
raise Puppet::ParseError, "validate_slength(): Expected third argument to be unset or a positive Numeric, got #{min_length}:#{min_length.class}"
end
else
min_length = 0
end
raise Puppet::ParseError, 'validate_slength(): Expected second argument to be equal to or larger than third argument' unless max_length >= min_length
validator = ->(str) do
unless str.length <= max_length && str.length >= min_length
raise Puppet::ParseError, "validate_slength(): Expected length of #{input.inspect} to be between #{min_length} and #{max_length}, was #{input.length}"
end
end
case input
when String
validator.call(input)
when Array
input.each_with_index do |arg, pos|
raise Puppet::ParseError, "validate_slength(): Expected element at array position #{pos} to be a String, got #{arg.class}" unless arg.is_a? String
validator.call(arg)
end
else
raise Puppet::ParseError, "validate_slength(): Expected first argument to be a String or Array, got #{input.class}"
end
end
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