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-rw-r--r--lib/puppet/parser/functions/join.rb41
1 files changed, 41 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/join.rb b/lib/puppet/parser/functions/join.rb
new file mode 100644
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+++ b/lib/puppet/parser/functions/join.rb
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+#
+# join.rb
+#
+
+module Puppet::Parser::Functions
+ newfunction(:join, :type => :rvalue, :doc => <<-EOS
+This function joins an array into a string using a seperator.
+
+*Examples:*
+
+ join(['a','b','c'], ",")
+
+Would result in: "a,b,c"
+ EOS
+ ) do |arguments|
+
+ # Technically we support two arguments but only first is mandatory ...
+ raise(Puppet::ParseError, "join(): Wrong number of arguments " +
+ "given (#{arguments.size} for 1)") if arguments.size < 1
+
+ array = arguments[0]
+
+ unless array.is_a?(Array)
+ raise(Puppet::ParseError, 'join(): Requires array to work with')
+ end
+
+ suffix = arguments[1] if arguments[1]
+
+ if suffix
+ unless suffix.is_a?(String)
+ raise(Puppet::ParseError, 'join(): Requires string to work with')
+ end
+ end
+
+ result = suffix ? array.join(suffix) : array.join
+
+ return result
+ end
+end
+
+# vim: set ts=2 sw=2 et :