1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
# frozen_string_literal: true
#
# join_keys_to_values.rb
#
module Puppet::Parser::Functions
newfunction(:join_keys_to_values, type: :rvalue, doc: <<-DOC
@summary
This function joins each key of a hash to that key's corresponding value with a
separator.
Keys are cast to strings. If values are arrays, multiple keys
are added for each element. The return value is an array in
which each element is one joined key/value pair.
@example Example Usage:
join_keys_to_values({'a'=>1,'b'=>2}, " is ") # Results in: ["a is 1","b is 2"]
join_keys_to_values({'a'=>1,'b'=>[2,3]}, " is ") # Results in: ["a is 1","b is 2","b is 3"]
@return [Hash]
The joined hash
> **Note:** Since Puppet 5.0.0 - for more detailed control over the formatting (including indentations and
line breaks, delimiters around arrays and hash entries, between key/values in hash entries, and individual
formatting of values in the array) - see the `new` function for `String` and its formatting
options for `Array` and `Hash`.
DOC
) do |arguments|
# Validate the number of arguments.
raise(Puppet::ParseError, "join_keys_to_values(): Takes exactly two arguments, but #{arguments.size} given.") if arguments.size != 2
# Validate the first argument.
hash = arguments[0]
raise(TypeError, "join_keys_to_values(): The first argument must be a hash, but a #{hash.class} was given.") unless hash.is_a?(Hash)
# Validate the second argument.
separator = arguments[1]
raise(TypeError, "join_keys_to_values(): The second argument must be a string, but a #{separator.class} was given.") unless separator.is_a?(String)
# Join the keys to their values.
hash.map { |k, v|
if v.is_a?(Array)
v.map { |va| String(k) + separator + String(va) }
elsif String(v) == 'undef'
String(k)
else
String(k) + separator + String(v)
end
}.flatten
end
end
# vim: set ts=2 sw=2 et :
|
