42 lines
1.4 KiB
Go
42 lines
1.4 KiB
Go
|
package hd44780
|
||
|
|
|
||
|
|
import (
|
||
|
|
"os"
|
||
|
|
|
||
|
|
"github.com/op/go-logging"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Comment INFO and uncomment DEBUG if you want detail debug output in library.
|
||
|
|
var log *logging.Logger = buildLogger("hd44780",
|
||
|
|
// logging.DEBUG,
|
||
|
|
logging.INFO,
|
||
|
|
)
|
||
|
|
|
||
|
|
var terminalBackend logging.LeveledBackend = nil
|
||
|
|
|
||
|
|
func buildLogger(module string, level logging.Level) *logging.Logger {
|
||
|
|
// Set the backends to be used.
|
||
|
|
if terminalBackend == nil {
|
||
|
|
// Everything except the message has a custom color
|
||
|
|
// which is dependent on the log level. Many fields have a custom output
|
||
|
|
// formatting too, eg. the time returns the hour down to the milli second.
|
||
|
|
var format = logging.MustStringFormatter(
|
||
|
|
"%{time:2006-01-02T15:04:05.000} [%{module}] " +
|
||
|
|
"%{color}%{level:.4s}%{color:reset} %{message}",
|
||
|
|
)
|
||
|
|
// Create backend for os.Stderr.
|
||
|
|
var backend logging.Backend = logging.NewLogBackend(os.Stderr, "", 0)
|
||
|
|
|
||
|
|
// For messages written to backend we want to add some additional
|
||
|
|
// information to the output, including the used log level and the name of
|
||
|
|
// the function.
|
||
|
|
var backendFormatter logging.Backend = logging.NewBackendFormatter(backend, format)
|
||
|
|
var backendLeveled logging.LeveledBackend = logging.AddModuleLevel(backendFormatter)
|
||
|
|
terminalBackend = backendLeveled
|
||
|
|
logging.SetBackend(terminalBackend)
|
||
|
|
}
|
||
|
|
log := logging.MustGetLogger(module)
|
||
|
|
terminalBackend.SetLevel(level, module)
|
||
|
|
return log
|
||
|
|
}
|