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-rw-r--r--lib/puppet/parser/functions/size.rb48
1 files changed, 48 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/size.rb b/lib/puppet/parser/functions/size.rb
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+++ b/lib/puppet/parser/functions/size.rb
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+#
+# size.rb
+#
+
+# TODO(Krzysztof Wilczynski): Support for hashes would be nice too ...
+
+module Puppet::Parser::Functions
+ newfunction(:size, :type => :rvalue, :doc => <<-EOS
+Returns the number of elements in a string or array.
+ EOS
+ ) do |arguments|
+
+ raise(Puppet::ParseError, "size(): Wrong number of arguments " +
+ "given (#{arguments.size} for 1)") if arguments.size < 1
+
+ item = arguments[0]
+
+ if item.is_a?(String)
+
+ begin
+ #
+ # Check whether your item is a numeric value or not ...
+ # This will take care about positive and/or negative numbers
+ # for both integer and floating-point values ...
+ #
+ # Please note that Puppet has no notion of hexadecimal
+ # nor octal numbers for its DSL at this point in time ...
+ #
+ Float(item)
+
+ raise(Puppet::ParseError, 'size(): Requires either ' +
+ 'string or array to work with')
+
+ rescue ArgumentError
+ result = item.size
+ end
+
+ elsif item.is_a?(Array)
+ result = item.size
+ else
+ raise(Puppet::ParseError, 'size(): Unknown type given')
+ end
+
+ return result
+ end
+end
+
+# vim: set ts=2 sw=2 et :