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author | fatmcgav <gavin.williams@weareact.com> | 2013-02-12 15:07:18 +0000 |
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committer | Jeff McCune <jeff@puppetlabs.com> | 2013-02-12 10:00:09 -0800 |
commit | 3cef5d9e3323115c896e76f9e217cac061ab156f (patch) | |
tree | 750b902e6ecf98bbd088001c40b9884db7ed2ae8 /lib/puppet/parser/functions | |
parent | 8dd82d318a05c5e35bd2d8853fce8b8bf1b2c2d0 (diff) | |
download | puppet-stdlib-3cef5d9e3323115c896e76f9e217cac061ab156f.tar.gz puppet-stdlib-3cef5d9e3323115c896e76f9e217cac061ab156f.tar.bz2 |
(#19201) Add concat function to join two arrays
Without this patch applied there is no easy way to append one array to
another. This is a problem because it is often desirable to join two
arrays without flattening the contents into a single, one dimensional
array.
This patch addresses the problem by adding a `concat()` function which
takes two arguments. The arguments will be concatenated together and a
new array returned to the caller.
Reviewed-by: Jeff McCune <jeff@puppetlabs.com>
Diffstat (limited to 'lib/puppet/parser/functions')
-rw-r--r-- | lib/puppet/parser/functions/concat.rb | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/concat.rb b/lib/puppet/parser/functions/concat.rb new file mode 100644 index 0000000..c86aa00 --- /dev/null +++ b/lib/puppet/parser/functions/concat.rb @@ -0,0 +1,37 @@ +# +# concat.rb +# + +module Puppet::Parser::Functions + newfunction(:concat, :type => :rvalue, :doc => <<-EOS +Appends the contents of array 2 onto array 1. + +*Example:* + + concat(['1','2','3'],['4','5','6']) + +Would result in: + + ['1','2','3','4','5','6'] + EOS + ) do |arguments| + + # Check that 2 arguments have been given ... + raise(Puppet::ParseError, "concat(): Wrong number of arguments " + + "given (#{arguments.size} for 2)") if arguments.size != 2 + + a = arguments[0] + b = arguments[1] + + # Check that both args are arrays. + unless a.is_a?(Array) and b.is_a?(Array) + raise(Puppet::ParseError, 'concat(): Requires array to work with') + end + + result = a.concat(b) + + return result + end +end + +# vim: set ts=2 sw=2 et : |