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package signed
import "lindenii.org/go/furgit/object/id"
// signatureHeaderNames maps each object format
// to the commit and tag signature header name
// that carries its signature,
// such as "gpgsig" for SHA-1
// and "gpgsig-sha256" for SHA-256.
//
//nolint:gochecknoglobals
var signatureHeaderNames = map[id.ObjectFormat]string{
id.ObjectFormatSHA1: "gpgsig",
id.ObjectFormatSHA256: "gpgsig-sha256",
}
//nolint:gochecknoglobals
var objectFormatBySignatureHeaderName = map[string]id.ObjectFormat{}
func init() { //nolint:gochecknoinits
for objectFormat, name := range signatureHeaderNames {
objectFormatBySignatureHeaderName[name] = objectFormat
}
}
// SignatureHeaderName returns the signature header name for objectFormat,
// such as "gpgsig" for SHA-1
// or "gpgsig-sha256" for SHA-256.
func SignatureHeaderName(objectFormat id.ObjectFormat) (string, bool) {
name, ok := signatureHeaderNames[objectFormat]
return name, ok
}
// ParseSignatureHeaderName parses one canonical signature header name
// such as "gpgsig" or "gpgsig-sha256"
// into its object format.
func ParseSignatureHeaderName(name string) (id.ObjectFormat, bool) {
objectFormat, ok := objectFormatBySignatureHeaderName[name]
return objectFormat, ok
}
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