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// 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 = "20200331"
// 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)
}
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