Adding zenservice code

1 files changed, 50 insertions, 0 deletions

diff --git a/zencore/xxhash.cpp b/zencore/xxhash.cpp
new file mode 100644
index 000000000..a20ee10bd
--- /dev/null
+++ b/zencore/xxhash.cpp
@@ -0,0 +1,50 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#include <zencore/xxhash.h>
+
+#include <zencore/string.h>
+
+#include <doctest/doctest.h>
+#include <gsl/gsl-lite.hpp>
+
+namespace zen {
+
+XXH3_128 XXH3_128::Zero;  // Initialized to all zeros
+
+XXH3_128
+XXH3_128::FromHexString(const char* InString)
+{
+	return FromHexString({InString, sizeof(XXH3_128::Hash) * 2});
+}
+
+XXH3_128
+XXH3_128::FromHexString(std::string_view InString)
+{
+	ZEN_ASSERT(InString.size() == 2 * sizeof(XXH3_128::Hash));
+
+	XXH3_128 Xx;
+	ParseHexBytes(InString.data(), InString.size(), Xx.Hash);
+	return Xx;
+}
+
+const char*
+XXH3_128::ToHexString(char* OutString /* 40 characters + NUL terminator */) const
+{
+	ToHexBytes(Hash, sizeof(XXH3_128), OutString);
+	OutString[2 * sizeof(XXH3_128)] = '\0';
+
+	return OutString;
+}
+
+StringBuilderBase&
+XXH3_128::ToHexString(StringBuilderBase& OutBuilder) const
+{
+	String_t str;
+	ToHexString(str);
+
+	OutBuilder.AppendRange(str, &str[StringLength]);
+
+	return OutBuilder;
+}
+
+}  // namespace zen