| // Copyright 2022 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 stdlib contains functionality relevant to the Go Standard Library. |
| package stdlib |
| |
| import ( |
| "strings" |
| |
| "golang.org/x/mod/module" |
| ) |
| |
| const ModulePath = "std" |
| |
| // Contains reports whether the given import path could be part of the Go |
| // standard library, by reporting whether the first component lacks a '.'. |
| func Contains(path string) bool { |
| if err := module.CheckImportPath(path); err != nil { |
| return false |
| } |
| if i := strings.IndexByte(path, '/'); i != -1 { |
| path = path[:i] |
| } |
| return !strings.Contains(path, ".") |
| } |