unipdf/common/logging.go
2016-07-29 17:23:43 +00:00

71 lines
1.6 KiB
Go

/*
* This file is subject to the terms and conditions defined in
* file 'LICENSE.md', which is part of this source code package.
*/
package common
import (
"fmt"
)
type Logger interface {
Error(format string, args ...interface{})
Warning(format string, args ...interface{})
Notice(format string, args ...interface{})
Info(format string, args ...interface{})
Debug(format string, args ...interface{})
}
// Dummy Logger does nothing.
type DummyLogger struct{}
func (this DummyLogger) Error(format string, args ...interface{}) {
}
func (this DummyLogger) Warning(format string, args ...interface{}) {
}
func (this DummyLogger) Notice(format string, args ...interface{}) {
}
func (this DummyLogger) Info(format string, args ...interface{}) {
}
func (this DummyLogger) Debug(format string, args ...interface{}) {
}
// Simple Console Logger that the tests use.
type ConsoleLogger struct{}
func (this ConsoleLogger) Error(format string, args ...interface{}) {
prefix := "[ERROR] "
fmt.Printf(prefix+format+"\n", args...)
}
func (this ConsoleLogger) Warning(format string, args ...interface{}) {
prefix := "[WARNING] "
fmt.Printf(prefix+format+"\n", args...)
}
func (this ConsoleLogger) Notice(format string, args ...interface{}) {
prefix := "[NOTICE] "
fmt.Printf(prefix+format+"\n", args...)
}
func (this ConsoleLogger) Info(format string, args ...interface{}) {
prefix := "[INFO] "
fmt.Printf(prefix+format+"\n", args...)
}
func (this ConsoleLogger) Debug(format string, args ...interface{}) {
prefix := "[DEBUG] "
fmt.Printf(prefix+format+"\n", args...)
}
var Log Logger = DummyLogger{}
func SetLogger(logger Logger) {
Log = logger
}