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// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package pathutil
import (
"path/filepath"
"strings"
)
// InDir checks whether path is in the file tree rooted at dir.
// It checks only the lexical form of the file names.
// It does not consider symbolic links.
//
// Copied from go/src/cmd/go/internal/search/search.go.
func InDir(dir, path string) bool {
pv := strings.ToUpper(filepath.VolumeName(path))
dv := strings.ToUpper(filepath.VolumeName(dir))
path = path[len(pv):]
dir = dir[len(dv):]
switch {
default:
return false
case pv != dv:
return false
case len(path) == len(dir):
if path == dir {
return true
}
return false
case dir == "":
return path != ""
case len(path) > len(dir):
if dir[len(dir)-1] == filepath.Separator {
if path[:len(dir)] == dir {
return path[len(dir):] != ""
}
return false
}
if path[len(dir)] == filepath.Separator && path[:len(dir)] == dir {
if len(path) == len(dir)+1 {
return true
}
return path[len(dir)+1:] != ""
}
return false
}
}
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