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
index 0000000..005a46e
--- /dev/null
+++ b/lib/puppet/parser/functions/join.rb
@@ -0,0 +1,41 @@
+#
+# 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 :