1 files changed, 43 insertions, 0 deletions
diff --git a/puppet/modules/stdlib/lib/puppet/parser/functions/num2bool.rb b/puppet/modules/stdlib/lib/puppet/parser/functions/num2bool.rb
new file mode 100644
index 00000000..af0e6ed7
--- /dev/null
+++ b/puppet/modules/stdlib/lib/puppet/parser/functions/num2bool.rb
@@ -0,0 +1,43 @@
+#
+# num2bool.rb
+#
+
+module Puppet::Parser::Functions
+  newfunction(:num2bool, :type => :rvalue, :doc => <<-EOS
+This function converts a number or a string representation of a number into a
+true boolean. Zero or anything non-numeric becomes false. Numbers higher then 0
+become true.
+    EOS
+  ) do |arguments|
+
+    raise(Puppet::ParseError, "num2bool(): Wrong number of arguments " +
+      "given (#{arguments.size} for 1)") if arguments.size != 1
+
+    number = arguments[0]
+
+    case number
+    when Numeric
+      # Yay, it's a number
+    when String
+      begin
+        number = Float(number)
+      rescue ArgumentError => ex
+        raise(Puppet::ParseError, "num2bool(): '#{number}' does not look like a number: #{ex.message}")
+      end
+    else
+      begin
+        number = number.to_s
+      rescue NoMethodError => ex
+        raise(Puppet::ParseError, "num2bool(): Unable to parse argument: #{ex.message}")
+      end
+    end
+
+    # Truncate Floats
+    number = number.to_i
+
+    # Return true for any positive number and false otherwise
+    return number > 0
+  end
+end
+
+# vim: set ts=2 sw=2 et :