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#
# camelcase.rb
#

module Puppet::Parser::Functions
newfunction(:camelcase, :type => :rvalue, :doc => <<-EOS
Converts the case of a string or all strings in an array to camel case.
EOS
) do |arguments|

raise(Puppet::ParseError, "camelcase(): Wrong number of arguments " +
"given (#{arguments.size} for 1)") if arguments.size < 1

value = arguments[0]
klass = value.class

unless [Array, String].include?(klass)
raise(Puppet::ParseError, 'camelcase(): Requires either ' +
'array or string to work with')
end

if value.is_a?(Array)
# Numbers in Puppet are often string-encoded which is troublesome ...
result = value.collect { |i| i.is_a?(String) ? i.split('_').map{|e| e.capitalize}.join : i }
else
result = value.split('_').map{|e| e.capitalize}.join
end

return result
end
end

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