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package internal
import (
"flag"
"io"
"log"
"os"
)
func init() {
flag.BoolVar(&debugMode, "debug", false, "true")
}
var debugMode = false
var infoMode = true
var debugFlags = log.Lshortfile | log.LstdFlags
// DebugMode returns true if debugMode is set, false otherwise
func DebugMode() bool {
return debugMode
}
// SetDebugMode sets the debug mode
func SetDebugMode(debug bool) {
debugMode = debug
}
// InfoLog returns true if logging to info level is enabled, false otherwise
func InfoLog() bool {
return infoMode
}
// SetInfoLog sets whether the info log should be enabled
func SetInfoLog(info bool) {
infoMode = info
}
// WithDebugLogging enables debug logging for the given function fn
func WithDebugLogging(fn func()) {
debugMode = true
fn()
debugMode = false
}
// Debug is a logger which logs when debugMode is enabled. If disabled, it executes a noop
var Debug = newConditionalLogger(os.Stderr, "go-hbci: ", debugFlags, &debugMode)
// Info is a logger which logs when infoMode is enabled. If disabled, it executes a noop
var Info = newConditionalLogger(os.Stderr, "go-hbci: ", log.LstdFlags, &infoMode)
func newConditionalLogger(w io.Writer, prefix string, flag int, condition *bool) *log.Logger {
condWriter := newConditionalWriter(w, condition)
return log.New(condWriter, prefix, flag)
}
func newConditionalWriter(w io.Writer, condition *bool) io.Writer {
return &conditionalWriter{Writer: w, condition: condition}
}
type conditionalWriter struct {
condition *bool
io.Writer
}
func (c *conditionalWriter) Write(p []byte) (n int, err error) {
if *c.condition {
return c.Writer.Write(p)
}
return 0, nil
}
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