blob: 8b4b9a3112cf7e69e41f41429c85e4989416797a [file] [log] [blame]
// Copyright 2021 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 fetchdatasource
import (
// NewGOPATHModuleGetter returns a module getter that uses the GOPATH
// environment variable to find the module with the given import path.
func NewGOPATHModuleGetter(importPath string) (_ fetch.ModuleGetter, err error) {
defer derrors.Wrap(&err, "NewGOPATHModuleGetter(%q)", importPath)
dir := getFullPath(importPath)
if dir == "" {
return nil, fmt.Errorf("path %s doesn't exist: %w", importPath, derrors.NotFound)
return fetch.NewDirectoryModuleGetter(importPath, dir)
// getFullPath takes an import path, tests it relative to each GOPATH, and returns
// a full path to the module. If the given import path doesn't exist in any GOPATH,
// an empty string is returned.
func getFullPath(modulePath string) string {
gopaths := filepath.SplitList(os.Getenv("GOPATH"))
for _, gopath := range gopaths {
path := filepath.Join(gopath, "src", modulePath)
info, err := os.Stat(path)
if err == nil && info.IsDir() {
return path
return ""