Added bufferlogger

bufferlogger.go

@@ -0,0 +1,44 @@
+package slog
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+	"sync"
+)
+
+type BufferLogger struct {
+	w      io.Writer
+	m      sync.Mutex
+	b      bytes.Buffer
+	silent bool
+}
+
+func (b *BufferLogger) Write(p []byte) (n int, err error) {
+	b.m.Lock()
+	defer b.m.Unlock()
+
+	return b.w.Write(p)
+}
+
+func (b *BufferLogger) FlushAll() {
+	b.m.Lock()
+	defer b.m.Unlock()
+
+	w := b.w.(*bufio.Writer)
+	w.Flush()
+	if !b.silent {
+		fmt.Print(string(b.b.Bytes()))
+	}
+	b.b.Truncate(0)
+	b.w = bufio.NewWriter(&b.b)
+}
+
+func NewBufferLogger(silent bool) io.Writer {
+	ret := &BufferLogger{}
+	ret.w = bufio.NewWriter(&ret.b)
+	ret.silent = silent
+
+	return ret
+}