// Copyright 2016 CoreOS, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package types

import (
	"path"

	"github.com/coreos/ignition/v2/config/shared/errors"
	"github.com/coreos/ignition/v2/config/util"
)

func validatePath(p string) error {
	if p == "" {
		return errors.ErrNoPath
	}
	if !path.IsAbs(p) {
		return errors.ErrPathRelative
	}
	if path.Clean(p) != p {
		return errors.ErrDirtyPath
	}
	return nil
}

func validatePathNilOK(p *string) error {
	if util.NilOrEmpty(p) {
		return nil
	}
	return validatePath(*p)
}
