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multi.go
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package log
import (
"fmt"
"io"
)
type Multi []Logger
func NewMulti(ll ...Logger) *Multi {
return (*Multi)(&ll)
}
func (m *Multi) Add(ll ...Logger) {
for _, l := range ll {
if l != nil {
*m = append(*m, l)
}
}
}
func (m Multi) Write(b []byte) (int, error) {
ws := make([]io.Writer, 0, len(m))
for _, l := range m {
ws = append(ws, l)
}
return io.MultiWriter(ws...).Write(b)
}
func (m Multi) Log(msg ...interface{}) {
for _, l := range m {
l.Log(msg...)
}
}
func (m Multi) Logf(msg string, args ...interface{}) {
for _, l := range m {
l.Logf(msg, args...)
}
}
func (m Multi) Error(err error) {
for _, l := range m {
l.Error(err)
}
}
func (m Multi) Errorf(msg string, args ...interface{}) {
for _, l := range m {
l.Errorf(msg, args...)
}
}
func (m Multi) Panic(msg interface{}) {
for _, l := range m {
func() {
defer recover() //Anywhere else this would be evil
l.Panic(msg)
}()
}
panic(msg)
}
func (m Multi) Panicf(msg string, args ...interface{}) {
for _, l := range m {
func() {
defer recover() //Anywhere else this would be evil
l.Panicf(msg, args...)
}()
}
panic(fmt.Sprintf(msg, args...))
}