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package toggledlog
import (
"encoding/json"
"fmt"
"log"
"os"
)
const (
ProgramName = "gocryptfs"
wpanicMsg = "-wpanic turns this warning into a panic: "
)
func JSONDump(obj interface{}) string {
b, err := json.MarshalIndent(obj, "", "\t")
if err != nil {
return err.Error()
} else {
return string(b)
}
}
// toggledLogger - a Logger than can be enabled and disabled
type toggledLogger struct {
// Enable or disable output
Enabled bool
// Panic after logging a message, useful in regression tests
Wpanic bool
*log.Logger
}
func (l *toggledLogger) Printf(format string, v ...interface{}) {
if !l.Enabled {
return
}
l.Logger.Printf(format, v...)
if l.Wpanic {
l.Logger.Panic(wpanicMsg + fmt.Sprintf(format, v...))
}
}
func (l *toggledLogger) Println(v ...interface{}) {
if !l.Enabled {
return
}
l.Logger.Println(v...)
if l.Wpanic {
l.Logger.Panic(wpanicMsg + fmt.Sprintln(v...))
}
}
// As defined by http://elinux.org/Debugging_by_printing#Log_Levels
// Debug messages
var Debug *toggledLogger
// Informational message e.g. startup information
var Info *toggledLogger
// A warning, meaning nothing serious by itself but might indicate problems
var Warn *toggledLogger
func init() {
Debug = &toggledLogger{false, false, log.New(os.Stdout, "", 0)}
Info = &toggledLogger{true, false, log.New(os.Stdout, "", 0)}
Warn = &toggledLogger{true, false, log.New(os.Stderr, "", 0)}
}
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