61 lines
1.2 KiB
Go
61 lines
1.2 KiB
Go
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package logger
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import (
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"fmt"
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"github.com/mgutz/ansi"
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)
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type Logger interface {
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Trace(f string, args ...interface{})
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Debug(f string, args ...interface{})
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Info(f string, args ...interface{})
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Warn(f string, args ...interface{})
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}
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type NullLogger struct{}
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func (n NullLogger) Trace(f string, args ...interface{}) {}
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func (n NullLogger) Debug(f string, args ...interface{}) {}
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func (n NullLogger) Info(f string, args ...interface{}) {}
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func (n NullLogger) Warn(f string, args ...interface{}) {}
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type ColorLogger struct {
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VeryVerbose bool
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Verbose bool
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Prefix string
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Color bool
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}
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func (c ColorLogger) Trace(f string, args ...interface{}) {
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if !c.VeryVerbose {
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return
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}
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c.output("blue", f, args...)
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}
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func (c ColorLogger) Debug(f string, args ...interface{}) {
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if !c.Verbose {
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return
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}
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c.output("green", f, args...)
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}
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func (c ColorLogger) Info(f string, args ...interface{}) {
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c.output("green", f, args...)
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}
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func (c ColorLogger) Warn(f string, args ...interface{}) {
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c.output("red", f, args...)
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}
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func (c ColorLogger) output(color, f string, args ...interface{}) {
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if c.Color && color != "" {
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f = ansi.Color(f, color)
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}
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fmt.Printf(fmt.Sprintf("%s%s\n", c.Prefix, f), args...)
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}
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