libgocryptfs/internal/toggledlog/log.go
Jakob Unterwurzacher 0c80cca674 toggledlog: convert remaing naked fmt.Print*
Several fatal errors were just printed to stdout, which
meant they were invisible when running the test suite.

Fix this by introducing toggledlog.Fatal and convert as
follows:

Fatal errors     -> toggledlog.Fatal
Warnings         -> toggledlog.Warn
Password prompts -> fmt.Fprintf
2016-06-05 14:32:07 +02:00

73 lines
1.6 KiB
Go

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...))
}
}
// Debug messages
// Can be enabled by passing "-d"
var Debug *toggledLogger
// Informational message
// Can be disabled by passing "-q"
var Info *toggledLogger
// A warning, meaning nothing serious by itself but might indicate problems.
// Passing "-wpanic" will make this function panic after printing the message.
var Warn *toggledLogger
// Fatal error, we are about to exit
var Fatal *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)}
Fatal = &toggledLogger{true, false, log.New(os.Stderr, "", 0)}
}