48 lines
1.3 KiB
Ruby
48 lines
1.3 KiB
Ruby
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#
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# join.rb
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#
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module Puppet::Parser::Functions
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newfunction(:join_keys_to_values, :type => :rvalue, :doc => <<-EOS
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This function joins each key of a hash to that key's corresponding value with a
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separator. Keys and values are cast to strings. The return value is an array in
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which each element is one joined key/value pair.
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*Examples:*
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join_keys_to_values({'a'=>1,'b'=>2}, " is ")
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Would result in: ["a is 1","b is 2"]
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EOS
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) do |arguments|
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# Validate the number of arguments.
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if arguments.size != 2
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raise(Puppet::ParseError, "join_keys_to_values(): Takes exactly two " +
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"arguments, but #{arguments.size} given.")
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end
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# Validate the first argument.
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hash = arguments[0]
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if not hash.is_a?(Hash)
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raise(TypeError, "join_keys_to_values(): The first argument must be a " +
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"hash, but a #{hash.class} was given.")
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end
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# Validate the second argument.
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separator = arguments[1]
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if not separator.is_a?(String)
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raise(TypeError, "join_keys_to_values(): The second argument must be a " +
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"string, but a #{separator.class} was given.")
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end
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# Join the keys to their values.
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hash.map do |k,v|
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String(k) + separator + String(v)
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end
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end
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end
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# vim: set ts=2 sw=2 et :
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