1 // Copyright 2011 The Go Authors.  All rights reserved.

     2 // Use of this source code is governed by a BSD-style

     3 // license that can be found in the LICENSE file.

     4 

     5 // Control over logging from the XMPP library.

     6 

     7 package xmpp

     8 

     9 var (

    10 	// If any of these are non-nil when NewClient() is called,

    11 	// they will be used to log messages of the indicated

    12 	// severity.

    13 	Warn  Logger = &noLog{}

    14 	Info  Logger = &noLog{}

    15 	Debug Logger = &noLog{}

    16 )

    17 

    18 // Anything implementing Logger can receive log messages from the XMPP

    19 // library. The default implementation doesn't log anything; it

    20 // efficiently discards all messages.

    21 type Logger interface {

    22 	Log(v ...interface{})

    23 	Logf(fmt string, v ...interface{})

    24 }

    25 

    26 type noLog struct {

    27 	flags  int

    28 	prefix string

    29 }

    30 

    31 var _ Logger = &noLog{}

    32 

    33 func (l *noLog) Log(v ...interface{}) {

    34 }

    35 

    36 func (l *noLog) Logf(fmt string, v ...interface{}) {

    37 }