blob: e57a4d59534d87c4d55693498bb6033b3f4cf4aa [file] [log] [blame]
// 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, ".")
}