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@@ -0,0 +1,48 @@
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+#
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+#
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+# Licensed to the Apache Software Foundation (ASF) under one
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+# or more contributor license agreements. See the NOTICE file
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+# distributed with this work for additional information
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+# regarding copyright ownership. The ASF licenses this file
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+# to you under the Apache License, Version 2.0 (the
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+# "License"); you may not use this file except in compliance
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+# with the License. You may obtain a copy of the License at
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+#
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+# http://www.apache.org/licenses/LICENSE-2.0
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+#
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+# Unless required by applicable law or agreed to in writing,
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+# software distributed under the License is distributed on an
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+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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+# KIND, either express or implied. See the License for the
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+# specific language governing permissions and limitations
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+# under the License.
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+#
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+#
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+
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+module Puppet::Parser::Functions
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+ newfunction(:hdp_to_lowercase, :type => :rvalue, :doc => <<-EOS
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+Converts the case of a string or all strings in an array to lower case.
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+ EOS
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+ ) do |arguments|
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+
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+ raise(Puppet::ParseError, "downcase(): Wrong number of arguments " +
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+ "given (#{arguments.size} for 1)") if arguments.size < 1
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+
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+ value = arguments[0]
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+ klass = value.class
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+
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+ unless [Array, String].include?(klass)
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+ raise(Puppet::ParseError, 'downcase(): Requires either ' +
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+ 'array or string to work with')
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+ end
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+
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+ if value.is_a?(Array)
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+ # Numbers in Puppet are often string-encoded which is troublesome ...
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+ result = value.collect { |i| i.is_a?(String) ? i.downcase : i }
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+ else
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+ result = value.downcase
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+ end
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+
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+ return result
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+ end
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+end
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Siddharth Wagle