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comparison modules/stdlib/lib/puppet/parser/functions/merge.rb @ 0:956e484adc12

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Initial public release of Puppet configs
author IBBoard <dev@ibboard.co.uk>
date Sat, 16 Aug 2014 19:47:38 +0000
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children addb0ea390a1
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-1:000000000000 0:956e484adc12
1 module Puppet::Parser::Functions
2 newfunction(:merge, :type => :rvalue, :doc => <<-'ENDHEREDOC') do |args|
3 Merges two or more hashes together and returns the resulting hash.
4
5 For example:
6
7 $hash1 = {'one' => 1, 'two', => 2}
8 $hash2 = {'two' => 'dos', 'three', => 'tres'}
9 $merged_hash = merge($hash1, $hash2)
10 # The resulting hash is equivalent to:
11 # $merged_hash = {'one' => 1, 'two' => 'dos', 'three' => 'tres'}
12
13 When there is a duplicate key, the key in the rightmost hash will "win."
14
15 ENDHEREDOC
16
17 if args.length < 2
18 raise Puppet::ParseError, ("merge(): wrong number of arguments (#{args.length}; must be at least 2)")
19 end
20
21 # The hash we accumulate into
22 accumulator = Hash.new
23 # Merge into the accumulator hash
24 args.each do |arg|
25 unless arg.is_a?(Hash)
26 raise Puppet::ParseError, "merge: unexpected argument type #{arg.class}, only expects hash arguments"
27 end
28 accumulator.merge!(arg)
29 end
30 # Return the fully merged hash
31 accumulator
32 end
33 end