1 files changed, 81 insertions, 0 deletions
diff --git a/vendor/go.mau.fi/util/exzerolog/writer.go b/vendor/go.mau.fi/util/exzerolog/writer.go
new file mode 100644
index 0000000..c570985
--- /dev/null
+++ b/vendor/go.mau.fi/util/exzerolog/writer.go
@@ -0,0 +1,81 @@
+// Copyright (c) 2023 Tulir Asokan
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package exzerolog
+
+import (
+	"bytes"
+	"sync"
+
+	"github.com/rs/zerolog"
+)
+
+// LogWriter wraps a zerolog.Logger and provides an io.Writer with buffering so each written line is logged separately.
+type LogWriter struct {
+	log   zerolog.Logger
+	level zerolog.Level
+	field string
+	mu    sync.Mutex
+	buf   bytes.Buffer
+}
+
+func NewLogWriter(log zerolog.Logger) *LogWriter {
+	zerolog.Nop()
+	return &LogWriter{
+		log:   log,
+		level: zerolog.DebugLevel,
+		field: zerolog.MessageFieldName,
+	}
+}
+
+func (lw *LogWriter) WithLevel(level zerolog.Level) *LogWriter {
+	return &LogWriter{
+		log:   lw.log,
+		level: level,
+		field: lw.field,
+	}
+}
+
+func (lw *LogWriter) WithField(field string) *LogWriter {
+	return &LogWriter{
+		log:   lw.log,
+		level: lw.level,
+		field: field,
+	}
+}
+
+func (lw *LogWriter) writeLine(data []byte) {
+	if len(data) == 0 {
+		return
+	}
+	if data[len(data)-1] == '\n' {
+		data = data[:len(data)-1]
+	}
+	if lw.buf.Len() > 0 {
+		lw.buf.Write(data)
+		data = lw.buf.Bytes()
+		lw.buf.Reset()
+	}
+	lw.log.WithLevel(lw.level).Bytes(lw.field, data).Send()
+}
+
+func (lw *LogWriter) Write(data []byte) (n int, err error) {
+	lw.mu.Lock()
+	defer lw.mu.Unlock()
+	newline := bytes.IndexByte(data, '\n')
+	if newline == len(data)-1 {
+		lw.writeLine(data)
+	} else if newline < 0 {
+		lw.buf.Write(data)
+	} else {
+		lines := bytes.Split(data, []byte{'\n'})
+		for _, line := range lines[:len(lines)-1] {
+			lw.writeLine(line)
+		}
+		lw.buf.Write(lines[len(lines)-1])
+	}
+	return len(data), nil
+}