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package code
import (
"errors"
"path/filepath"
"sync"
"golang.org/x/tools/go/packages"
)
var pathForDirCache = sync.Map{}
// ImportPathFromDir takes an *absolute* path and returns a golang import path for the package, and returns an error if it isn't on the gopath
func ImportPathForDir(dir string) string {
if v, ok := pathForDirCache.Load(dir); ok {
return v.(string)
}
p, _ := packages.Load(&packages.Config{
Dir: dir,
}, ".")
// If the dir dosent exist yet, keep walking up the directory tree trying to find a match
if len(p) != 1 {
parent, err := filepath.Abs(filepath.Join(dir, ".."))
if err != nil {
panic(err)
}
// Walked all the way to the root and didnt find anything :'(
if parent == dir {
return ""
}
return ImportPathForDir(parent) + "/" + filepath.Base(dir)
}
pathForDirCache.Store(dir, p[0].PkgPath)
return p[0].PkgPath
}
var nameForPackageCache = sync.Map{}
func NameForPackage(importPath string) string {
if importPath == "" {
panic(errors.New("import path can not be empty"))
}
if v, ok := nameForPackageCache.Load(importPath); ok {
return v.(string)
}
importPath = QualifyPackagePath(importPath)
p, _ := packages.Load(nil, importPath)
if len(p) != 1 || p[0].Name == "" {
return SanitizePackageName(filepath.Base(importPath))
}
nameForPackageCache.Store(importPath, p[0].Name)
return p[0].Name
}
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