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task/internal/logger/logger.go

107 lines
2.3 KiB
Go

package logger
import (
"io"
"os"
"strconv"
"github.com/fatih/color"
)
type (
Color func() PrintFunc
PrintFunc func(io.Writer, string, ...any)
)
func Default() PrintFunc {
return color.New(envColor("TASK_COLOR_RESET", color.Reset)).FprintfFunc()
}
func Blue() PrintFunc {
return color.New(envColor("TASK_COLOR_BLUE", color.FgBlue)).FprintfFunc()
}
func Green() PrintFunc {
return color.New(envColor("TASK_COLOR_GREEN", color.FgGreen)).FprintfFunc()
}
func Cyan() PrintFunc {
return color.New(envColor("TASK_COLOR_CYAN", color.FgCyan)).FprintfFunc()
}
func Yellow() PrintFunc {
return color.New(envColor("TASK_COLOR_YELLOW", color.FgYellow)).FprintfFunc()
}
func Magenta() PrintFunc {
return color.New(envColor("TASK_COLOR_MAGENTA", color.FgMagenta)).FprintfFunc()
}
func Red() PrintFunc {
return color.New(envColor("TASK_COLOR_RED", color.FgRed)).FprintfFunc()
}
func envColor(env string, defaultColor color.Attribute) color.Attribute {
if os.Getenv("FORCE_COLOR") != "" {
color.NoColor = false
}
override, err := strconv.Atoi(os.Getenv(env))
if err == nil {
return color.Attribute(override)
}
return defaultColor
}
// Logger is just a wrapper that prints stuff to STDOUT or STDERR,
// with optional color.
type Logger struct {
Stdout io.Writer
Stderr io.Writer
Verbose bool
Color bool
}
// Outf prints stuff to STDOUT.
func (l *Logger) Outf(color Color, s string, args ...any) {
l.FOutf(l.Stdout, color, s, args...)
}
// FOutf prints stuff to the given writer.
func (l *Logger) FOutf(w io.Writer, color Color, s string, args ...any) {
if len(args) == 0 {
s, args = "%s", []any{s}
}
if !l.Color {
color = Default
}
print := color()
print(w, s, args...)
}
// VerboseOutf prints stuff to STDOUT if verbose mode is enabled.
func (l *Logger) VerboseOutf(color Color, s string, args ...any) {
if l.Verbose {
l.Outf(color, s, args...)
}
}
// Errf prints stuff to STDERR.
func (l *Logger) Errf(color Color, s string, args ...any) {
if len(args) == 0 {
s, args = "%s", []any{s}
}
if !l.Color {
color = Default
}
print := color()
print(l.Stderr, s, args...)
}
// VerboseErrf prints stuff to STDERR if verbose mode is enabled.
func (l *Logger) VerboseErrf(color Color, s string, args ...any) {
if l.Verbose {
l.Errf(color, s, args...)
}
}