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-rw-r--r--lib/puppet/parser/functions/validate_re.rb35
1 files changed, 35 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/validate_re.rb b/lib/puppet/parser/functions/validate_re.rb
new file mode 100644
index 0000000..583f26a
--- /dev/null
+++ b/lib/puppet/parser/functions/validate_re.rb
@@ -0,0 +1,35 @@
+module Puppet::Parser::Functions
+
+ newfunction(:validate_re, :doc => <<-'ENDHEREDOC') do |args|
+ Perform simple validation of a string against a regular expression. The second
+ argument of the function should be a string regular expression (without the //'s)
+ or an array of regular expressions. If none of the regular expressions in the array
+ match the string passed in, then an exception will be raised.
+
+ Example:
+
+ These strings validate against the regular expressions
+
+ validate_re('one', '^one$')
+ validate_re('one', [ '^one', '^two' ])
+
+ These strings do NOT validate
+
+ validate_re('one', [ '^two', '^three' ])
+
+ Jeff McCune <jeff@puppetlabs.com>
+
+ ENDHEREDOC
+ if args.length != 2 then
+ raise Puppet::ParseError, ("validate_re(): wrong number of arguments (#{args.length}; must be 2)")
+ end
+
+ msg = "validate_re(): #{args[0].inspect} does not match #{args[1].inspect}"
+
+ raise Puppet::ParseError, (msg) unless args[1].any? do |re_str|
+ args[0] =~ Regexp.compile(re_str)
+ end
+
+ end
+
+end