--- /dev/null
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package export
+
+import (
+ "io"
+
+ "golang.org/x/tools/internal/event/core"
+ "golang.org/x/tools/internal/event/keys"
+ "golang.org/x/tools/internal/event/label"
+)
+
+type Printer struct {
+ buffer [128]byte
+}
+
+func (p *Printer) WriteEvent(w io.Writer, ev core.Event, lm label.Map) {
+ buf := p.buffer[:0]
+ if !ev.At().IsZero() {
+ w.Write(ev.At().AppendFormat(buf, "2006/01/02 15:04:05 "))
+ }
+ msg := keys.Msg.Get(lm)
+ io.WriteString(w, msg)
+ if err := keys.Err.Get(lm); err != nil {
+ if msg != "" {
+ io.WriteString(w, ": ")
+ }
+ io.WriteString(w, err.Error())
+ }
+ for index := 0; ev.Valid(index); index++ {
+ l := ev.Label(index)
+ if !l.Valid() || l.Key() == keys.Msg || l.Key() == keys.Err {
+ continue
+ }
+ io.WriteString(w, "\n\t")
+ io.WriteString(w, l.Key().Name())
+ io.WriteString(w, "=")
+ l.Key().Format(w, buf, l)
+ }
+ io.WriteString(w, "\n")
+}