diff options
author | Micah <micah@leap.se> | 2016-05-24 10:19:33 -0400 |
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committer | Micah <micah@leap.se> | 2016-05-24 10:19:33 -0400 |
commit | 1da5dc55ee48fcd437f5b5df00a5b2f3991ec9f1 (patch) | |
tree | 1794e812d83facd93b3007c42632c63ddf1eb2fc /lib/puppet/parser/functions/prefix.rb |
Squashed 'puppet/modules/stdlib/' content from commit 7112363
git-subtree-dir: puppet/modules/stdlib
git-subtree-split: 71123634744b9fe2ec7d6a3e38e9789fd84801e3
Diffstat (limited to 'lib/puppet/parser/functions/prefix.rb')
-rw-r--r-- | lib/puppet/parser/functions/prefix.rb | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/prefix.rb b/lib/puppet/parser/functions/prefix.rb new file mode 100644 index 00000000..d02286af --- /dev/null +++ b/lib/puppet/parser/functions/prefix.rb @@ -0,0 +1,45 @@ +# +# prefix.rb +# + +module Puppet::Parser::Functions + newfunction(:prefix, :type => :rvalue, :doc => <<-EOS +This function applies a prefix to all elements in an array. + +*Examples:* + + prefix(['a','b','c'], 'p') + +Will return: ['pa','pb','pc'] + EOS + ) do |arguments| + + # Technically we support two arguments but only first is mandatory ... + raise(Puppet::ParseError, "prefix(): Wrong number of arguments " + + "given (#{arguments.size} for 1)") if arguments.size < 1 + + array = arguments[0] + + unless array.is_a?(Array) + raise Puppet::ParseError, "prefix(): expected first argument to be an Array, got #{array.inspect}" + end + + prefix = arguments[1] if arguments[1] + + if prefix + unless prefix.is_a?(String) + raise Puppet::ParseError, "prefix(): expected second argument to be a String, got #{prefix.inspect}" + end + end + + # Turn everything into string same as join would do ... + result = array.collect do |i| + i = i.to_s + prefix ? prefix + i : i + end + + return result + end +end + +# vim: set ts=2 sw=2 et : |