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71 lines
1.7 KiB
71 lines
1.7 KiB
// Copyright 2016 Google Inc. All Rights Reserved. |
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// |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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//go:generate ./update_version.sh |
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// Package version contains version information for Google Cloud Client |
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// Libraries for Go, as reported in request headers. |
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package version |
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import ( |
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"runtime" |
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"strings" |
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"unicode" |
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) |
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// Repo is the current version of the client libraries in this |
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// repo. It should be a date in YYYYMMDD format. |
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const Repo = "20180226" |
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// Go returns the Go runtime version. The returned string |
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// has no whitespace. |
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func Go() string { |
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return goVersion |
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} |
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var goVersion = goVer(runtime.Version()) |
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const develPrefix = "devel +" |
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func goVer(s string) string { |
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if strings.HasPrefix(s, develPrefix) { |
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s = s[len(develPrefix):] |
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if p := strings.IndexFunc(s, unicode.IsSpace); p >= 0 { |
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s = s[:p] |
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} |
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return s |
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} |
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if strings.HasPrefix(s, "go1") { |
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s = s[2:] |
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var prerelease string |
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if p := strings.IndexFunc(s, notSemverRune); p >= 0 { |
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s, prerelease = s[:p], s[p:] |
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} |
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if strings.HasSuffix(s, ".") { |
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s += "0" |
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} else if strings.Count(s, ".") < 2 { |
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s += ".0" |
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} |
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if prerelease != "" { |
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s += "-" + prerelease |
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} |
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return s |
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} |
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return "" |
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} |
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func notSemverRune(r rune) bool { |
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return strings.IndexRune("0123456789.", r) < 0 |
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}
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