1 files changed, 22 insertions, 0 deletions
diff --git a/library/cpp/case_insensitive_string/case_insensitive_string.cpp b/library/cpp/case_insensitive_string/case_insensitive_string.cpp
new file mode 100644
index 00000000000..16c0f5ff7a2
--- /dev/null
+++ b/library/cpp/case_insensitive_string/case_insensitive_string.cpp
@@ -0,0 +1,22 @@
+#include "case_insensitive_string.h"
+
+#include <library/cpp/digest/murmur/murmur.h>
+
+size_t THash<TCaseInsensitiveStringBuf>::operator()(TCaseInsensitiveStringBuf str) const noexcept {
+    TMurmurHash2A<size_t> hash;
+    for (size_t i = 0; i < str.size(); ++i) {
+        char lower = std::tolower(str[i]);
+        hash.Update(&lower, 1);
+    }
+    return hash.Value();
+}
+
+template <>
+void Out<TCaseInsensitiveString>(IOutputStream& o, const TCaseInsensitiveString& p) {
+    o.Write(p.data(), p.size());
+}
+
+template <>
+void Out<TCaseInsensitiveStringBuf>(IOutputStream& o, const TCaseInsensitiveStringBuf& p) {
+    o.Write(p.data(), p.size());
+}