cache.go

// CachePath returns the path to a cached dependency's sources.
func CachePath(importPath string) {

	if importPath == "" {
		msg.Die("Missing import path")
	}

	cache.SystemLock()

	base := "."
	// Ensure GOPATH
	EnsureGopath()
	EnsureVendorDir()
	EnsureConfig()

	// Load lockfile
	lock, err := cfg.ReadLockFile(filepath.Join(base, gpath.LockFile))
	if err != nil {
		msg.Die("Could not load lockfile.")
	}

	var importedLock *cfg.Lock
	for _, l := range lock.Imports {
		if strings.EqualFold(importPath, l.Name) {
			importedLock = l
			break
		}
	}

	if importedLock == nil {
		msg.Die("Could not locate import path")
	}

	repoURL := importedLock.Repository
	if repoURL == "" {
		repoURL = fmt.Sprintf("https://%s", importedLock.Name)
	}

	cacheKey, err := cache.Key(repoURL)
	if err != nil {
		msg.Die("Could not find cache for import path", err)
	}
	if cacheKey == "" {
		msg.Die("Could not find cache for import path")
	}

	msg.Puts(path.Join(cache.Location(), "src", cacheKey))
}