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-rw-r--r--lib/puppet/parser/functions/hash.rb41
1 files changed, 41 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/hash.rb b/lib/puppet/parser/functions/hash.rb
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+++ b/lib/puppet/parser/functions/hash.rb
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+#
+# hash.rb
+#
+
+module Puppet::Parser::Functions
+ newfunction(:hash, :type => :rvalue, :doc => <<-EOS
+This function converts and array into a hash.
+
+*Examples:*
+
+ hash(['a',1,'b',2,'c',3])
+
+Would return: {'a'=>1,'b'=>2,'c'=>3}
+ EOS
+ ) do |arguments|
+
+ raise(Puppet::ParseError, "hash(): Wrong number of arguments " +
+ "given (#{arguments.size} for 1)") if arguments.size < 1
+
+ array = arguments[0]
+
+ unless array.is_a?(Array)
+ raise(Puppet::ParseError, 'hash(): Requires array to work with')
+ end
+
+ result = {}
+
+ begin
+ # This is to make it compatible with older version of Ruby ...
+ array = array.flatten
+ result = Hash[*array]
+ rescue Exception
+ raise(Puppet::ParseError, 'hash(): Unable to compute ' +
+ 'hash from array given')
+ end
+
+ return result
+ end
+end
+
+# vim: set ts=2 sw=2 et :