forked from yuin/sesame
/
logger.go
44 lines (34 loc) · 909 Bytes
/
logger.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
package sesame
import (
"fmt"
"os"
)
// LogLevel is a level of the logging.
type LogLevel int
const (
// LogLevelDebug is a debug level log.
LogLevelDebug LogLevel = -4
// LogLevelInfo is an info level log.
LogLevelInfo LogLevel = 0
// LogLevelWarn is a warning level log.
LogLevelWarn LogLevel = 4
// LogLevelError is an error level log.
LogLevelError LogLevel = 8
)
// Log is a function for the logging.
type Log func(level LogLevel, format string, args ...any)
// StdLog is a [Log] that writes to stdout and stderr.
func StdLog(level LogLevel, format string, args ...any) {
out := os.Stdout
if level >= LogLevelWarn {
out = os.Stderr
}
if level >= LogEnabledFor {
fmt.Fprintf(out, format, args...)
fmt.Fprint(out, "\n")
}
}
// LogFunc is a [Log] used in this package.
var LogFunc Log = StdLog
// LogEnabledFor is a threshold for the logging.
var LogEnabledFor = LogLevelInfo