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author | Gonçalo Silva <goncalossilva@gmail.com> | 2010-06-30 23:01:30 +0100 |
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committer | Gonçalo Silva <goncalossilva@gmail.com> | 2010-06-30 23:01:30 +0100 |
commit | d2c633ba0bfb7baacdee89a46d7d036d24c68817 (patch) | |
tree | 8f0974852b51597652e6ae73da26f3eb80fe878b /actionpack/lib/action_dispatch/vendor/rack-mount-0.6.6.pre/rack/mount/regexp_with_named_groups.rb | |
parent | 92c0f17d6d2a958d3a6285b0e5408e9e0e7122e1 (diff) | |
parent | c63cf7bf0db708fe46a929cf57649ab5a92034af (diff) | |
download | rails-d2c633ba0bfb7baacdee89a46d7d036d24c68817.tar.gz rails-d2c633ba0bfb7baacdee89a46d7d036d24c68817.tar.bz2 rails-d2c633ba0bfb7baacdee89a46d7d036d24c68817.zip |
Merge branch 'master' of http://github.com/rails/rails
Diffstat (limited to 'actionpack/lib/action_dispatch/vendor/rack-mount-0.6.6.pre/rack/mount/regexp_with_named_groups.rb')
-rw-r--r-- | actionpack/lib/action_dispatch/vendor/rack-mount-0.6.6.pre/rack/mount/regexp_with_named_groups.rb | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/vendor/rack-mount-0.6.6.pre/rack/mount/regexp_with_named_groups.rb b/actionpack/lib/action_dispatch/vendor/rack-mount-0.6.6.pre/rack/mount/regexp_with_named_groups.rb new file mode 100644 index 0000000000..c11292b2a2 --- /dev/null +++ b/actionpack/lib/action_dispatch/vendor/rack-mount-0.6.6.pre/rack/mount/regexp_with_named_groups.rb @@ -0,0 +1,69 @@ +module Rack::Mount + if Regin.regexp_supports_named_captures? + RegexpWithNamedGroups = Regexp + else + require 'strscan' + + # A wrapper that adds shim named capture support to older + # versions of Ruby. + # + # Because the named capture syntax causes a parse error, an + # alternate syntax is used to indicate named captures. + # + # Ruby 1.9+ named capture syntax: + # + # /(?<foo>[a-z]+)/ + # + # Ruby 1.8 shim syntax: + # + # /(?:<foo>[a-z]+)/ + class RegexpWithNamedGroups < Regexp + def self.new(regexp) #:nodoc: + if regexp.is_a?(RegexpWithNamedGroups) + regexp + else + super + end + end + + # Wraps Regexp with named capture support. + def initialize(regexp) + regexp = Regexp.compile(regexp) unless regexp.is_a?(Regexp) + source, options = regexp.source, regexp.options + @names, scanner = [], StringScanner.new(source) + + while scanner.skip_until(/\(/) + if scanner.scan(/\?:<([^>]+)>/) + @names << scanner[1] + elsif scanner.scan(/\?(i?m?x?\-?i?m?x?)?:/) + # ignore noncapture + else + @names << nil + end + end + source.gsub!(/\?:<([^>]+)>/, '') + + @names = [] unless @names.any? + @names.freeze + + super(source, options) + end + + def names + @names.dup + end + + def named_captures + named_captures = {} + names.each_with_index { |n, i| + named_captures[n] = [i+1] if n + } + named_captures + end + + def eql?(other) + super && @names.eql?(other.names) + end + end + end +end |