fix feature name splitting to split on last colon

1 files changed, 16 insertions, 0 deletions

diff --git a/util/tokenize_piece.hh b/util/tokenize_piece.hh
index 413bda0b9..7234ed0c6 100644
--- a/util/tokenize_piece.hh
+++ b/util/tokenize_piece.hh
@@ -87,6 +87,22 @@ class AnyCharacter {
       return StringPiece(std::find_first_of(in.data(), in.data() + in.size(), chars_.data(), chars_.data() + chars_.size()), 1);
     }
 
+    StringPiece FindLast(const StringPiece &in) const {
+      return StringPiece(std::find_end(in.data(), in.data() + in.size(), chars_.data(), chars_.data() + chars_.size()), 1);
+    }
+
+  private:
+    StringPiece chars_;
+};
+
+class AnyCharacterLast {
+  public:
+    explicit AnyCharacterLast(const StringPiece &chars) : chars_(chars) {}
+
+    StringPiece Find(const StringPiece &in) const {
+      return StringPiece(std::find_end(in.data(), in.data() + in.size(), chars_.data(), chars_.data() + chars_.size()), 1);
+    }
+
   private:
     StringPiece chars_;
 };