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#
# delete_regex.rb
#
module Puppet::Parser::Functions
newfunction(:delete_regex, :type => :rvalue, :doc => <<-EOS
deletes all instances of a given element that match a regular expression
from an array or key from a hash. Multiple regular expressions are assumed
to be matched as an OR.
*Examples:*
delete_regex(['a','b','c','b'], 'b')
Would return: ['a','c']
delete_regex(['a','b','c','b'], ['b', 'c'])
Would return: ['a']
delete_regex({'a'=>1,'b'=>2,'c'=>3}, 'b')
Would return: {'a'=>1,'c'=>3}
delete_regex({'a'=>1,'b'=>2,'c'=>3}, '^a$')
Would return: {'b'=>2,'c'=>3}
EOS
) do |arguments|
raise(Puppet::ParseError, "delete_regex(): Wrong number of arguments "+
"given #{arguments.size} for 2") unless arguments.size == 2
collection = arguments[0].dup
Array(arguments[1]).each do |item|
case collection
when Array, Hash, String
collection.reject! { |coll_item| (coll_item =~ %r{\b#{item}\b}) }
else
raise(TypeError, "delete_regex(): First argument must be an Array, " +
"Hash, or String. Given an argument of class #{collection.class}.")
end
end
collection
end
end
# vim: set ts=2 sw=2 et :
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