// Copyright 2016 Google LLC // // 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. //go:generate ./update_version.sh // Package version contains version information for Google Cloud Client // Libraries for Go, as reported in request headers. package version import ( "runtime" "strings" "unicode" ) // Repo is the current version of the client libraries in this // repo. It should be a date in YYYYMMDD format. const Repo = "20200727" // Go returns the Go runtime version. The returned string // has no whitespace. func Go() string { return goVersion } var goVersion = goVer(runtime.Version()) const develPrefix = "devel +" func goVer(s string) string { if strings.HasPrefix(s, develPrefix) { s = s[len(develPrefix):] if p := strings.IndexFunc(s, unicode.IsSpace); p >= 0 { s = s[:p] } return s } if strings.HasPrefix(s, "go1") { s = s[2:] var prerelease string if p := strings.IndexFunc(s, notSemverRune); p >= 0 { s, prerelease = s[:p], s[p:] } if strings.HasSuffix(s, ".") { s += "0" } else if strings.Count(s, ".") < 2 { s += ".0" } if prerelease != "" { s += "-" + prerelease } return s } return "" } func notSemverRune(r rune) bool { return !strings.ContainsRune("0123456789.", r) }