go: infra/libs/* now live in luci-go.

go/src/infra/libs/errors/multierror.go

-// Copyright 2015 The Chromium 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 errors
-
-import (
-        "fmt"
-)
-
-// MultiError is a simple `error` implementation which represents multiple
-// `error` objects in one.
-type MultiError []error
-
-// MultiErrorFromErrors takes an error-channel, blocks on it, and returns
-// a MultiError for any errors pushed to it over the channel, or nil if
-// all the errors were nil.
-func MultiErrorFromErrors(ch <-chan error) error {
-        if ch == nil {
-                return nil
-        }
-        ret := MultiError(nil)
-        for e := range ch {
-                if e == nil {
-                        continue
-                }
-                ret = append(ret, e)
-        }
-        if len(ret) == 0 {
-                return nil
-        }
-        return ret
-}
-
-func (m MultiError) Error() string {
-        return fmt.Sprintf("%+q", []error(m))
-}