Decimate prefixlog

License: MIT
Signed-off-by: rht <rhtbot@gmail.com>

util/prefixlog/prefixlog.go

-package eventlog
-
-import (
-	"strings"
-
-	"github.com/ipfs/go-ipfs/util"
-)
-
-// StandardLogger provides API compatibility with standard printf loggers
-// eg. go-logging
-type StandardLogger interface {
-	Critical(args ...interface{})
-	Criticalf(format string, args ...interface{})
-	Debug(args ...interface{})
-	Debugf(format string, args ...interface{})
-	Error(args ...interface{})
-	Errorf(format string, args ...interface{})
-	Fatal(args ...interface{})
-	Fatalf(format string, args ...interface{})
-	Info(args ...interface{})
-	Infof(format string, args ...interface{})
-	Notice(args ...interface{})
-	Noticef(format string, args ...interface{})
-	Panic(args ...interface{})
-	Panicf(format string, args ...interface{})
-	Warning(args ...interface{})
-	Warningf(format string, args ...interface{})
-}
-
-// StandardLogger provides API compatibility with standard printf loggers
-// eg. go-logging
-type PrefixLogger interface {
-	StandardLogger
-
-	Format() string
-	Args() []interface{}
-
-	Prefix(fmt string, args ...interface{}) PrefixLogger
-}
-
-// Logger retrieves an event logger by name
-func Logger(system string) PrefixLogger {
-
-	// TODO if we would like to adjust log levels at run-time. Store this event
-	// logger in a map (just like the util.Logger impl)
-
-	logger := util.Logger(system)
-	return Prefix(logger, "")
-}
-
-func Prefix(l StandardLogger, format string, args ...interface{}) PrefixLogger {
-	return &prefixLogger{logger: l, format: format, args: args}
-}
-
-type prefixLogger struct {
-	logger StandardLogger
-	format string
-	args   []interface{}
-}
-
-func (pl *prefixLogger) Format() string {
-	return pl.format
-}
-
-func (pl *prefixLogger) Args() []interface{} {
-	return pl.args
-}
-
-func (pl *prefixLogger) Prefix(fmt string, args ...interface{}) PrefixLogger {
-	return Prefix(pl, fmt, args...)
-}
-
-func (pl *prefixLogger) prepend(fmt string, args []interface{}) (string, []interface{}) {
-	together := make([]interface{}, 0, len(pl.args)+len(args))
-	together = append(together, pl.args...)
-	together = append(together, args...)
-	if len(pl.format) > 0 {
-		fmt = pl.format + " " + fmt
-	}
-	return fmt, together
-}
-
-func valfmtn(count int) string {
-	s := strings.Repeat("%v ", count)
-	s = s[:len(s)-1] // remove last space
-	return s
-}
-
-type logFunc func(args ...interface{})
-type logFuncf func(fmt string, args ...interface{})
-
-func (pl *prefixLogger) logFunc(f logFuncf, args ...interface{}) {
-	// need to actually use the format version, with extra fmt strings appended
-	fmt := valfmtn(len(args))
-	pl.logFuncf(f, fmt, args...)
-}
-
-func (pl *prefixLogger) logFuncf(f logFuncf, format string, args ...interface{}) {
-	format, args = pl.prepend(format, args)
-	f(format, args...)
-}
-
-func (pl *prefixLogger) Critical(args ...interface{}) {
-	pl.logFunc(pl.logger.Criticalf, args...)
-}
-func (pl *prefixLogger) Debug(args ...interface{}) {
-	pl.logFunc(pl.logger.Debugf, args...)
-}
-func (pl *prefixLogger) Error(args ...interface{}) {
-	pl.logFunc(pl.logger.Errorf, args...)
-}
-func (pl *prefixLogger) Fatal(args ...interface{}) {
-	pl.logFunc(pl.logger.Fatalf, args...)
-}
-func (pl *prefixLogger) Info(args ...interface{}) {
-	pl.logFunc(pl.logger.Infof, args...)
-}
-func (pl *prefixLogger) Notice(args ...interface{}) {
-	pl.logFunc(pl.logger.Noticef, args...)
-}
-func (pl *prefixLogger) Panic(args ...interface{}) {
-	pl.logFunc(pl.logger.Panicf, args...)
-}
-func (pl *prefixLogger) Warning(args ...interface{}) {
-	pl.logFunc(pl.logger.Warningf, args...)
-}
-
-func (pl *prefixLogger) Criticalf(format string, args ...interface{}) {
-	pl.logFuncf(pl.logger.Criticalf, format, args...)
-}
-func (pl *prefixLogger) Debugf(format string, args ...interface{}) {
-	pl.logFuncf(pl.logger.Debugf, format, args...)
-}
-func (pl *prefixLogger) Errorf(format string, args ...interface{}) {
-	pl.logFuncf(pl.logger.Errorf, format, args...)
-}
-func (pl *prefixLogger) Fatalf(format string, args ...interface{}) {
-	pl.logFuncf(pl.logger.Fatalf, format, args...)
-}
-func (pl *prefixLogger) Infof(format string, args ...interface{}) {
-	pl.logFuncf(pl.logger.Infof, format, args...)
-}
-func (pl *prefixLogger) Noticef(format string, args ...interface{}) {
-	pl.logFuncf(pl.logger.Noticef, format, args...)
-}
-func (pl *prefixLogger) Panicf(format string, args ...interface{}) {
-	pl.logFuncf(pl.logger.Panicf, format, args...)
-}
-func (pl *prefixLogger) Warningf(format string, args ...interface{}) {
-	pl.logFuncf(pl.logger.Warningf, format, args...)
-}