| // Copyright 2015 The LUCI Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // Package support provides Info-related support functionality. It is designed |
| // to be used by implementing packages. |
| package support |
| |
| import ( |
| "fmt" |
| "regexp" |
| ) |
| |
| // validNamespace matches valid namespace names. |
| var validNamespace = regexp.MustCompile(`^[0-9A-Za-z._-]{0,100}$`) |
| |
| // ValidNamespace will return an error if the supplied string is not a valid |
| // namespace. |
| func ValidNamespace(ns string) error { |
| if validNamespace.MatchString(ns) { |
| return nil |
| } |
| return fmt.Errorf("appengine: namespace %q does not match /%s/", ns, validNamespace) |
| } |