Update stdlib

[mirror/dsa-puppet.git] / 3rdparty / modules / stdlib / lib / puppet / parser / functions / clamp.rb

diff --git a/3rdparty/modules/stdlib/lib/puppet/parser/functions/clamp.rb b/3rdparty/modules/stdlib/lib/puppet/parser/functions/clamp.rb
new file mode 100644 (file)
index 0000000..c4503fe
--- /dev/null
+++ b/3rdparty/modules/stdlib/lib/puppet/parser/functions/clamp.rb
@@ -0,0 +1,29 @@
+#
+# clamp.rb
+#
+
+module Puppet::Parser::Functions
+  newfunction(:clamp, :type => :rvalue, :arity => -2, :doc => <<-EOS
+    Clamps value to a range.
+    EOS
+  ) do |args|
+
+    args.flatten!
+
+    raise(Puppet::ParseError, 'clamp(): Wrong number of arguments, need three to clamp') if args.size != 3
+
+    # check values out
+    args.each do |value|
+      case [value.class]
+        when [String]
+          raise(Puppet::ParseError, "clamp(): Required explicit numeric (#{value}:String)") unless value =~ /^\d+$/
+        when [Hash]
+          raise(Puppet::ParseError, "clamp(): The Hash type is not allowed (#{value})")
+      end
+    end
+
+    # convert to numeric each element
+    # then sort them and get a middle value
+    args.map{ |n| n.to_i }.sort[1]
+  end
+end