diff options
Diffstat (limited to 'lib/gitlab/untrusted_regexp.rb')
| -rw-r--r-- | lib/gitlab/untrusted_regexp.rb | 35 |
1 files changed, 4 insertions, 31 deletions
diff --git a/lib/gitlab/untrusted_regexp.rb b/lib/gitlab/untrusted_regexp.rb index ba1137313d8..14126b6ec06 100644 --- a/lib/gitlab/untrusted_regexp.rb +++ b/lib/gitlab/untrusted_regexp.rb @@ -35,6 +35,10 @@ module Gitlab matches end + def match?(text) + text.present? && scan(text).present? + end + def replace(text, rewrite) RE2.Replace(text, regexp, rewrite) end @@ -43,37 +47,6 @@ module Gitlab self.source == other.source end - # Handles regular expressions with the preferred RE2 library where possible - # via UntustedRegex. Falls back to Ruby's built-in regular expression library - # when the syntax would be invalid in RE2. - # - # One difference between these is `(?m)` multi-line mode. Ruby regex enables - # this by default, but also handles `^` and `$` differently. - # See: https://www.regular-expressions.info/modifiers.html - def self.with_fallback(pattern, multiline: false) - UntrustedRegexp.new(pattern, multiline: multiline) - rescue RegexpError - Regexp.new(pattern) - end - - def self.valid?(pattern) - !!self.fabricate(pattern) - rescue RegexpError - false - end - - def self.fabricate(pattern) - matches = pattern.match(%r{^/(?<regexp>.+)/(?<flags>[ismU]*)$}) - - raise RegexpError, 'Invalid regular expression!' if matches.nil? - - expression = matches[:regexp] - flags = matches[:flags] - expression.prepend("(?#{flags})") if flags.present? - - self.new(expression, multiline: false) - end - private attr_reader :regexp |