/usr/share/puppet/modules.available/puppetlabs-stdlib/lib/puppet/parser/functions/delete.rb is in puppet-module-puppetlabs-stdlib 4.14.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# delete.rb
#
module Puppet::Parser::Functions
newfunction(:delete, :type => :rvalue, :doc => <<-EOS
Deletes all instances of a given element from an array, substring from a
string, or key from a hash.
*Examples:*
delete(['a','b','c','b'], 'b')
Would return: ['a','c']
delete({'a'=>1,'b'=>2,'c'=>3}, 'b')
Would return: {'a'=>1,'c'=>3}
delete({'a'=>1,'b'=>2,'c'=>3}, ['b','c'])
Would return: {'a'=>1}
delete('abracadabra', 'bra')
Would return: 'acada'
EOS
) do |arguments|
raise(Puppet::ParseError, "delete(): 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
collection.delete item
when String
collection.gsub! item, ''
else
raise(TypeError, "delete(): First argument must be an Array, " +
"String, or Hash. Given an argument of class #{collection.class}.")
end
end
collection
end
end
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