1 files changed, 10 insertions, 0 deletions
diff --git a/src/strutil.cc b/src/strutil.cc
index adee769..a22f4b4 100644
--- a/src/strutil.cc
+++ b/src/strutil.cc
@@ -208,4 +208,14 @@ std::string rtrim(std::string const& str) {
   return str.substr(0, end);
 }
 
+std::string to_lower_ascii(std::string_view str) {
+  std::string ret(str);
+  for (auto& c : ret) {
+    if (c >= 'A' && c <= 'Z') {
+      c |= 0x20;
+    }
+  }
+  return ret;
+}
+
 }  // namespace str