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gopls/internal/lsp/source: extract InDir to a new pathutil package
Change-Id: Ib977563e100a536c7721a1cf5690f2f639e5f741 Reviewed-on: https://go-review.googlesource.com/c/tools/+/543918 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Alan Donovan <adonovan@google.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| // 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 | ||
| } | ||
| } |