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signal.go
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signal.go
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package gdpr
import (
"strconv"
"github.com/prebid/prebid-server/v2/errortypes"
)
type Signal int
const (
SignalAmbiguous Signal = -1
SignalNo Signal = 0
SignalYes Signal = 1
)
var gdprSignalError = &errortypes.BadInput{Message: "GDPR signal should be integer 0 or 1"}
// StrSignalParse returns a parsed GDPR signal or a parse error.
func StrSignalParse(signal string) (Signal, error) {
if signal == "" {
return SignalAmbiguous, nil
}
i, err := strconv.Atoi(signal)
if err != nil {
return SignalAmbiguous, gdprSignalError
}
return IntSignalParse(i)
}
// IntSignalParse checks parameter i is not out of bounds and returns a GDPR signal error
func IntSignalParse(i int) (Signal, error) {
if i != 0 && i != 1 {
return SignalAmbiguous, gdprSignalError
}
return Signal(i), nil
}
// SignalNormalize normalizes a GDPR signal to ensure it's always either SignalYes or SignalNo.
func SignalNormalize(signal Signal, gdprDefaultValue string) Signal {
if signal != SignalAmbiguous {
return signal
}
if gdprDefaultValue == "0" {
return SignalNo
}
return SignalYes
}