Golang Dependency.UpdateAsVendored方法代码示例

// VcsUpdate updates to a particular checkout based on the VCS setting.
func VcsUpdate(dep *cfg.Dependency, dest, home string, cache, cacheGopath, useGopath, force, updateVendored bool) error {

	// If the dependency has already been pinned we can skip it. This is a
	// faster path so we don't need to resolve it again.
	if dep.Pin != "" {
		msg.Debug("Dependency %s has already been pinned. Fetching updates skipped.", dep.Name)
		return nil
	}

	msg.Info("Fetching updates for %s.\n", dep.Name)

	if filterArchOs(dep) {
		msg.Info("%s is not used for %s/%s.\n", dep.Name, runtime.GOOS, runtime.GOARCH)
		return nil
	}

	// If destination doesn't exist we need to perform an initial checkout.
	if _, err := os.Stat(dest); os.IsNotExist(err) {
		if err = VcsGet(dep, dest, home, cache, cacheGopath, useGopath); err != nil {
			msg.Warn("Unable to checkout %s\n", dep.Name)
			return err
		}
	} else {
		// At this point we have a directory for the package.

		// When the directory is not empty and has no VCS directory it's
		// a vendored files situation.
		empty, err := gpath.IsDirectoryEmpty(dest)
		if err != nil {
			return err
		}
		_, err = v.DetectVcsFromFS(dest)
		if updateVendored == false && empty == false && err == v.ErrCannotDetectVCS {
			msg.Warn("%s appears to be a vendored package. Unable to update. Consider the '--update-vendored' flag.\n", dep.Name)
		} else {

			if updateVendored == true && empty == false && err == v.ErrCannotDetectVCS {
				// A vendored package, no repo, and updating the vendored packages
				// has been opted into.
				msg.Info("%s is a vendored package. Updating.", dep.Name)
				err = os.RemoveAll(dest)
				if err != nil {
					msg.Error("Unable to update vendored dependency %s.\n", dep.Name)
					return err
				} else {
					dep.UpdateAsVendored = true
				}

				if err = VcsGet(dep, dest, home, cache, cacheGopath, useGopath); err != nil {
					msg.Warn("Unable to checkout %s\n", dep.Name)
					return err
				}

				return nil
			}

			repo, err := dep.GetRepo(dest)

			// Tried to checkout a repo to a path that does not work. Either the
			// type or endpoint has changed. Force is being passed in so the old
			// location can be removed and replaced with the new one.
			// Warning, any changes in the old location will be deleted.
			// TODO: Put dirty checking in on the existing local checkout.
			if (err == v.ErrWrongVCS || err == v.ErrWrongRemote) && force == true {
				var newRemote string
				if len(dep.Repository) > 0 {
					newRemote = dep.Repository
				} else {
					newRemote = "https://" + dep.Name
				}

				msg.Warn("Replacing %s with contents from %s\n", dep.Name, newRemote)
				rerr := os.RemoveAll(dest)
				if rerr != nil {
					return rerr
				}
				if err = VcsGet(dep, dest, home, cache, cacheGopath, useGopath); err != nil {
					msg.Warn("Unable to checkout %s\n", dep.Name)
					return err
				}
			} else if err != nil {
				return err
			} else if repo.IsDirty() {
				return fmt.Errorf("%s contains uncommited changes. Skipping update", dep.Name)
			} else {

				// Check if the current version is a tag or commit id. If it is
				// and that version is already checked out we can skip updating
				// which is faster than going out to the Internet to perform
				// an update.
				if dep.Reference != "" {
					version, err := repo.Version()
					if err != nil {
						return err
					}
					ib, err := isBranch(dep.Reference, repo)
					if err != nil {
						return err
					}
//.........这里部分代码省略.........