83 lines
1.8 KiB
Go
83 lines
1.8 KiB
Go
package hclog
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import (
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"bytes"
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"io"
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)
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type writer struct {
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b bytes.Buffer
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w io.Writer
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color ColorOption
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}
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func newWriter(w io.Writer, color ColorOption) *writer {
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return &writer{w: w, color: color}
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}
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func (w *writer) Flush(level Level) (err error) {
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var unwritten = w.b.Bytes()
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if w.color != ColorOff {
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color := _levelToColor[level]
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unwritten = []byte(color.Sprintf("%s", unwritten))
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}
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if lw, ok := w.w.(LevelWriter); ok {
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_, err = lw.LevelWrite(level, unwritten)
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} else {
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_, err = w.w.Write(unwritten)
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}
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w.b.Reset()
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return err
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}
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func (w *writer) Write(p []byte) (int, error) {
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return w.b.Write(p)
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}
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func (w *writer) WriteByte(c byte) error {
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return w.b.WriteByte(c)
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}
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func (w *writer) WriteString(s string) (int, error) {
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return w.b.WriteString(s)
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}
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// LevelWriter is the interface that wraps the LevelWrite method.
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type LevelWriter interface {
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LevelWrite(level Level, p []byte) (n int, err error)
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}
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// LeveledWriter writes all log messages to the standard writer,
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// except for log levels that are defined in the overrides map.
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type LeveledWriter struct {
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standard io.Writer
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overrides map[Level]io.Writer
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}
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// NewLeveledWriter returns an initialized LeveledWriter.
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//
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// standard will be used as the default writer for all log levels,
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// except for log levels that are defined in the overrides map.
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func NewLeveledWriter(standard io.Writer, overrides map[Level]io.Writer) *LeveledWriter {
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return &LeveledWriter{
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standard: standard,
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overrides: overrides,
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}
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}
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// Write implements io.Writer.
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func (lw *LeveledWriter) Write(p []byte) (int, error) {
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return lw.standard.Write(p)
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}
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// LevelWrite implements LevelWriter.
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func (lw *LeveledWriter) LevelWrite(level Level, p []byte) (int, error) {
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w, ok := lw.overrides[level]
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if !ok {
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w = lw.standard
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}
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return w.Write(p)
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}
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