1// Copyright (c) 2013-2016 The btcsuite developers
2// Use of this source code is governed by an ISC
3// license that can be found in the LICENSE file.
4
5package mempool
6
7import (
8	"github.com/btcsuite/btclog"
9)
10
11// log is a logger that is initialized with no output filters.  This
12// means the package will not perform any logging by default until the caller
13// requests it.
14var log btclog.Logger
15
16// The default amount of logging is none.
17func init() {
18	DisableLog()
19}
20
21// DisableLog disables all library log output.  Logging output is disabled
22// by default until either UseLogger or SetLogWriter are called.
23func DisableLog() {
24	log = btclog.Disabled
25}
26
27// UseLogger uses a specified Logger to output package logging info.
28// This should be used in preference to SetLogWriter if the caller is also
29// using btclog.
30func UseLogger(logger btclog.Logger) {
31	log = logger
32}
33
34// pickNoun returns the singular or plural form of a noun depending
35// on the count n.
36func pickNoun(n int, singular, plural string) string {
37	if n == 1 {
38		return singular
39	}
40	return plural
41}
42