diff options
author | Xavier Noria <fxn@hashref.com> | 2009-06-13 12:46:09 +0200 |
---|---|---|
committer | Jeremy Kemper <jeremy@bitsweat.net> | 2009-06-13 15:01:14 -0700 |
commit | b56169c26240db1b1cff3c6f65a34b7516a9fc15 (patch) | |
tree | 8f1d6ff26fd993afedbead7c1a4bd79ced5844a9 /activesupport/lib/active_support/core_ext/regexp.rb | |
parent | 9eeb5fed2ff8e781e56202f62b125bfadc486999 (diff) | |
download | rails-b56169c26240db1b1cff3c6f65a34b7516a9fc15.tar.gz rails-b56169c26240db1b1cff3c6f65a34b7516a9fc15.tar.bz2 rails-b56169c26240db1b1cff3c6f65a34b7516a9fc15.zip |
moves reopening of core classes to add generic stuff from Action Pack to AS/core_ext and adds tests
[#2798 state:committed]
Signed-off-by: Jeremy Kemper <jeremy@bitsweat.net>
Diffstat (limited to 'activesupport/lib/active_support/core_ext/regexp.rb')
-rw-r--r-- | activesupport/lib/active_support/core_ext/regexp.rb | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/regexp.rb b/activesupport/lib/active_support/core_ext/regexp.rb new file mode 100644 index 0000000000..1a04c70d87 --- /dev/null +++ b/activesupport/lib/active_support/core_ext/regexp.rb @@ -0,0 +1,25 @@ +class Regexp #:nodoc: + def number_of_captures + Regexp.new("|#{source}").match('').captures.length + end + + def multiline? + options & MULTILINE == MULTILINE + end + + class << self + def optionalize(pattern) + case unoptionalize(pattern) + when /\A(.|\(.*\))\Z/ then "#{pattern}?" + else "(?:#{pattern})?" + end + end + + def unoptionalize(pattern) + [/\A\(\?:(.*)\)\?\Z/, /\A(.|\(.*\))\?\Z/].each do |regexp| + return $1 if regexp =~ pattern + end + return pattern + end + end +end |