init: 自 zomaintain/backend/rdplib 平移独立成库; module path 从上游 github.com/nakagami/grdp 改为 git.zeroonesoft.cn/golib/rdplib

core/log.go

@@ -0,0 +1,20 @@
+package core
+
+import (
+	"encoding/hex"
+	"log/slog"
+)
+
+// Hex wraps a byte slice as a slog.LogValuer that lazily encodes the bytes
+// as a hexadecimal string only when the slog handler actually formats it.
+//
+// Use Hex(buf) instead of hex.EncodeToString(buf) inside slog.Debug calls on
+// hot paths: when the logger's level filter discards the record (the common
+// case in production), the encode and the per-call string allocation are
+// skipped entirely.
+type Hex []byte
+
+// LogValue implements slog.LogValuer.
+func (h Hex) LogValue() slog.Value {
+	return slog.StringValue(hex.EncodeToString(h))
+}