diff options
Diffstat (limited to 'lib/puppet')
-rw-r--r-- | lib/puppet/parser/functions/delete.rb | 30 | ||||
-rw-r--r-- | lib/puppet/parser/functions/pick.rb | 29 |
2 files changed, 50 insertions, 9 deletions
diff --git a/lib/puppet/parser/functions/delete.rb b/lib/puppet/parser/functions/delete.rb index ab8f75b..f814344 100644 --- a/lib/puppet/parser/functions/delete.rb +++ b/lib/puppet/parser/functions/delete.rb @@ -3,31 +3,43 @@ # # TODO(Krzysztof Wilczynski): We need to add support for regular expression ... -# TODO(Krzysztof Wilczynski): Support for strings and hashes too ... module Puppet::Parser::Functions newfunction(:delete, :type => :rvalue, :doc => <<-EOS -Deletes a selected element from an array. +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') + delete(['a','b','c','b'], 'b') + Would return: ['a','c'] -Would return: ['a','c'] + delete({'a'=>1,'b'=>2,'c'=>3}, 'b') + Would return: {'a'=>1,'c'=>3} + + delete('abracadabra', 'bra') + Would return: 'acada' EOS ) do |arguments| if (arguments.size != 2) then raise(Puppet::ParseError, "delete(): Wrong number of arguments "+ - "given #{arguments.size} for 2") + "given #{arguments.size} for 2.") end - a = arguments[0] + collection = arguments[0] item = arguments[1] - a.delete(item) - a - + 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 + collection end end diff --git a/lib/puppet/parser/functions/pick.rb b/lib/puppet/parser/functions/pick.rb new file mode 100644 index 0000000..cbc0300 --- /dev/null +++ b/lib/puppet/parser/functions/pick.rb @@ -0,0 +1,29 @@ +module Puppet::Parser::Functions + newfunction(:pick, :type => :rvalue, :doc => <<-EOS + +This function is similar to a coalesce function in SQL in that it will return +the first value in a list of values that is not undefined or an empty string +(two things in Puppet that will return a boolean false value). Typically, +this function is used to check for a value in the Puppet Dashboard/Enterprise +Console, and failover to a default value like the following: + + $real_jenkins_version = pick($::jenkins_version, '1.449') + +The value of $real_jenkins_version will first look for a top-scope variable +called 'jenkins_version' (note that parameters set in the Puppet Dashboard/ +Enterprise Console are brought into Puppet as top-scope variables), and, +failing that, will use a default value of 1.449. + +EOS +) do |args| + args = args.compact + args.delete(:undef) + args.delete(:undefined) + args.delete("") + if args[0].to_s.empty? then + fail "Must provide non empty value." + else + return args[0] + end + end +end |