chore: migrate to gitea

vendor/go.opentelemetry.io/otel/attribute/internal/xxhash/xxhash.go

@@ -0,0 +1,64 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+// Package xxhash provides a wrapper around the xxhash library for attribute hashing.
+package xxhash // import "go.opentelemetry.io/otel/attribute/internal/xxhash"
+
+import (
+	"encoding/binary"
+	"math"
+
+	"github.com/cespare/xxhash/v2"
+)
+
+// Hash wraps xxhash.Digest to provide an API friendly for hashing attribute values.
+type Hash struct {
+	d *xxhash.Digest
+}
+
+// New returns a new initialized xxHash64 hasher.
+func New() Hash {
+	return Hash{d: xxhash.New()}
+}
+
+func (h Hash) Uint64(val uint64) Hash {
+	var buf [8]byte
+	binary.LittleEndian.PutUint64(buf[:], val)
+	// errors from Write are always nil for xxhash
+	// if it returns an err then panic
+	_, err := h.d.Write(buf[:])
+	if err != nil {
+		panic("xxhash write of uint64 failed: " + err.Error())
+	}
+	return h
+}
+
+func (h Hash) Bool(val bool) Hash { // nolint:revive // This is a hashing function.
+	if val {
+		return h.Uint64(1)
+	}
+	return h.Uint64(0)
+}
+
+func (h Hash) Float64(val float64) Hash {
+	return h.Uint64(math.Float64bits(val))
+}
+
+func (h Hash) Int64(val int64) Hash {
+	return h.Uint64(uint64(val)) // nolint:gosec // Overflow doesn't matter since we are hashing.
+}
+
+func (h Hash) String(val string) Hash {
+	// errors from WriteString are always nil for xxhash
+	// if it returns an err then panic
+	_, err := h.d.WriteString(val)
+	if err != nil {
+		panic("xxhash write of string failed: " + err.Error())
+	}
+	return h
+}
+
+// Sum64 returns the current hash value.
+func (h Hash) Sum64() uint64 {
+	return h.d.Sum64()
+}