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logger.go
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logger.go
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package orange
import "fmt"
import "runtime"
import "strings"
import "time"
const (
Gray = uint8(iota + 90)
Red
Green
Yellow
Blue
Magenta
//NRed = uint8(31) // Normal
EndColor = "\033[0m"
INFO = "INFO"
TRAC = "TRAC"
ERRO = "ERRO"
WARN = "WARN"
SUCC = "SUCC"
)
// ColorLog colors log and print to stdout.
// See color rules in function 'ColorLogS'.
func colorLog(format string, a ...interface{}) {
fmt.Print(colorLogS(format, a...))
}
// ColorLogS colors log and return colored content.
// Log format: <level> <content [highlight][path]> [ error ].
// Level: TRAC -> blue; ERRO -> red; WARN -> Magenta; SUCC -> green; others -> default.
// Content: default; path: yellow; error -> red.
// Level has to be surrounded by "[" and "]".
// Highlights have to be surrounded by "# " and " #"(space), "#" will be deleted.
// Paths have to be surrounded by "( " and " )"(space).
// Errors have to be surrounded by "[ " and " ]"(space).
// Note: it hasn't support windows yet, contribute is welcome.
func colorLogS(format string, a ...interface{}) string {
log := fmt.Sprintf(format, a...)
var clog string
if runtime.GOOS != "windows" {
// Level.
i := strings.Index(log, "]")
if log[0] == '[' && i > -1 {
clog += "[" + getColorLevel(log[1:i]) + "]"
}
log = log[i+1:]
// Error.
log = strings.Replace(log, "[ ", fmt.Sprintf("[\033[%dm", Red), -1)
log = strings.Replace(log, " ]", EndColor+"]", -1)
// Path.
log = strings.Replace(log, "( ", fmt.Sprintf("(\033[%dm", Yellow), -1)
log = strings.Replace(log, " )", EndColor+")", -1)
// Highlights.
log = strings.Replace(log, "# ", fmt.Sprintf("\033[%dm", Gray), -1)
log = strings.Replace(log, " #", EndColor, -1)
log = clog + log
} else {
// Level.
i := strings.Index(log, "]")
if log[0] == '[' && i > -1 {
clog += "[" + log[1:i] + "]"
}
log = log[i+1:]
// Error.
log = strings.Replace(log, "[ ", "[", -1)
log = strings.Replace(log, " ]", "]", -1)
// Path.
log = strings.Replace(log, "( ", "(", -1)
log = strings.Replace(log, " )", ")", -1)
// Highlights.
log = strings.Replace(log, "# ", "", -1)
log = strings.Replace(log, " #", "", -1)
log = clog + log
}
return time.Now().Format("2006/01/02 15:04:05 ") + log
}
// getColorLevel returns colored level string by given level.
func getColorLevel(level string) string {
level = strings.ToUpper(level)
switch level {
case INFO:
return fmt.Sprintf("\033[%dm%s\033[0m", Blue, level)
case TRAC:
return fmt.Sprintf("\033[%dm%s\033[0m", Blue, level)
case ERRO:
return fmt.Sprintf("\033[%dm%s\033[0m", Red, level)
case WARN:
return fmt.Sprintf("\033[%dm%s\033[0m", Magenta, level)
case SUCC:
return fmt.Sprintf("\033[%dm%s\033[0m", Green, level)
default:
return level
}
return level
}