blob: 1a180ca1fb4e026100a9572c81c9b3022525cfb1 [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 internal
import (
"path"
"golang.org/x/mod/module"
"golang.org/x/pkgsite/internal/stdlib"
)
var vcsHostsWithThreeElementRepoName = map[string]bool{
"bitbucket.org": true,
"gitea.com": true,
"gitee.com": true,
"github.com": true,
"gitlab.com": true,
}
// CandidateModulePaths returns the potential module paths that could contain
// the fullPath, from longest to shortest. It returns nil if no valid module
// paths can be constructed.
func CandidateModulePaths(fullPath string) []string {
if stdlib.Contains(fullPath) {
if err := module.CheckImportPath(fullPath); err != nil {
return nil
}
return []string{"std"}
}
var r []string
for p := fullPath; p != "." && p != "/"; p = path.Dir(p) {
if err := module.CheckImportPath(p); err != nil {
continue
}
r = append(r, p)
}
if len(r) == 0 {
return nil
}
if !vcsHostsWithThreeElementRepoName[r[len(r)-1]] {
return r
}
if len(r) < 3 {
return nil
}
return r[:len(r)-2]
}