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// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package migration

import "fmt"

// ErrNotSupported represents status if a downloader do not supported something.
type ErrNotSupported struct {
	Entity string
}

// IsErrNotSupported checks if an error is an ErrNotSupported
func IsErrNotSupported(err error) bool {
	_, ok := err.(ErrNotSupported)
	return ok
}

// Error return error message
func (err ErrNotSupported) Error() string {
	if len(err.Entity) != 0 {
		return fmt.Sprintf("'%s' not supported", err.Entity)
	}
	return "not supported"
}