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parent_dir.go
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/
parent_dir.go
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// Copyright 2024 Google LLC
//
// 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 internal
import "path/filepath"
// ParentDir returns the parent dir up to n dirs deep.
// If the path is below n dirs, the function returns path.
// This function assumes no leading `/` or drive letter.
func ParentDir(path string, n int) string {
for i, c := range path {
if c == filepath.Separator {
n--
if n == 0 {
return path[:i]
}
}
}
return path
}