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-rw-r--r--lib/puppet/parser/functions/grep.rb33
1 files changed, 33 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/grep.rb b/lib/puppet/parser/functions/grep.rb
new file mode 100644
index 0000000..ceba9ec
--- /dev/null
+++ b/lib/puppet/parser/functions/grep.rb
@@ -0,0 +1,33 @@
+#
+# grep.rb
+#
+
+module Puppet::Parser::Functions
+ newfunction(:grep, :type => :rvalue, :doc => <<-EOS
+This function searches through an array and returns any elements that match
+the provided regular expression.
+
+*Examples:*
+
+ grep(['aaa','bbb','ccc','aaaddd'], 'aaa')
+
+Would return:
+
+ ['aaa','aaaddd']
+ EOS
+ ) do |arguments|
+
+ if (arguments.size != 2) then
+ raise(Puppet::ParseError, "grep(): Wrong number of arguments "+
+ "given #{arguments.size} for 2")
+ end
+
+ a = arguments[0]
+ pattern = Regexp.new(arguments[1])
+
+ a.grep(pattern)
+
+ end
+end
+
+# vim: set ts=2 sw=2 et :