rename variable

Signed-off-by: Lixia (Sylvia) Lei <[email protected]>

registry/remote/auth/client.go

@@ -59,7 +59,7 @@ var defaultClientID = "oras-go"
 //
 // [EmptyCredential] is a valid return value and should not be considered as
 // an error.
-type CredentialFunc func(ctx context.Context, target string) (Credential, error)
+type CredentialFunc func(ctx context.Context, hostport string) (Credential, error)
 
 // StaticCredential specifies static credentials for the given host.
 func StaticCredential(registry string, cred Credential) CredentialFunc {
@@ -69,8 +69,8 @@ func StaticCredential(registry string, cred Credential) CredentialFunc {
 		// reference: https://github.com/moby/moby/blob/v24.0.0-beta.2/registry/config.go#L25-L48
 		registry = "registry-1.docker.io"
 	}
-	return func(_ context.Context, target string) (Credential, error) {
-		if target == registry {
+	return func(_ context.Context, hostport string) (Credential, error) {
+		if hostport == registry {
 			return cred, nil
 		}
 		return EmptyCredential, nil

registry/remote/credentials/registry.go

@@ -70,12 +70,12 @@ func Logout(ctx context.Context, store Store, registryName string) error {
 
 // Credential returns a Credential() function that can be used by auth.Client.
 func Credential(store Store) auth.CredentialFunc {
-	return func(ctx context.Context, reg string) (auth.Credential, error) {
-		reg = ServerAddressFromHostname(reg)
-		if reg == "" {
+	return func(ctx context.Context, hostport string) (auth.Credential, error) {
+		hostport = ServerAddressFromHostname(hostport)
+		if hostport == "" {
 			return auth.EmptyCredential, nil
 		}
-		return store.Get(ctx, reg)
+		return store.Get(ctx, hostport)
 	}
 }