Mercurial > repos > other > Puppet
view modules/stdlib/lib/puppet/parser/functions/merge.rb @ 272:c42fb28cff86
Update to a newer Python module
This also pulls in an EPEL module (which we don't use) and a newer
stdlib version.
author | IBBoard <dev@ibboard.co.uk> |
---|---|
date | Fri, 03 Jan 2020 19:56:04 +0000 |
parents | addb0ea390a1 |
children | d9352a684e62 |
line wrap: on
line source
# # merge.rb # module Puppet::Parser::Functions newfunction(:merge, :type => :rvalue, :doc => <<-'DOC') do |args| Merges two or more hashes together and returns the resulting hash. For example: $hash1 = {'one' => 1, 'two', => 2} $hash2 = {'two' => 'dos', 'three', => 'tres'} $merged_hash = merge($hash1, $hash2) # The resulting hash is equivalent to: # $merged_hash = {'one' => 1, 'two' => 'dos', 'three' => 'tres'} When there is a duplicate key, the key in the rightmost hash will "win." DOC if args.length < 2 raise Puppet::ParseError, "merge(): wrong number of arguments (#{args.length}; must be at least 2)" end # The hash we accumulate into accumulator = {} # Merge into the accumulator hash args.each do |arg| next if arg.is_a?(String) && arg.empty? # empty string is synonym for puppet's undef unless arg.is_a?(Hash) raise Puppet::ParseError, "merge: unexpected argument type #{arg.class}, only expects hash arguments" end accumulator.merge!(arg) end # Return the fully merged hash accumulator end end