mirror of
https://github.com/lightninglabs/loop
synced 2024-11-04 06:00:21 +00:00
67 lines
2.1 KiB
Go
67 lines
2.1 KiB
Go
package loop
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// Copyright (c) 2013-2017 The btcsuite developers
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// Copyright (c) 2015-2016 The Decred developers
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// Heavily inspired by https://github.com/btcsuite/btcd/blob/master/version.go
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// Copyright (C) 2015-2019 The Lightning Network Developers
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import (
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"bytes"
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"fmt"
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"strings"
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)
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// Commit stores the current commit hash of this build, this should be set
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// using the -ldflags during compilation.
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var Commit string
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// semanticAlphabet
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const semanticAlphabet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-"
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// These constants define the application version and follow the semantic
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// versioning 2.0.0 spec (http://semver.org/).
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const (
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appMajor uint = 0
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appMinor uint = 4
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appPatch uint = 1
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// appPreRelease MUST only contain characters from semanticAlphabet per
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// the semantic versioning spec.
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appPreRelease = "beta"
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)
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// Version returns the application version as a properly formed string per the
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// semantic versioning 2.0.0 spec (http://semver.org/).
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func Version() string {
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// Start with the major, minor, and patch versions.
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version := fmt.Sprintf("%d.%d.%d", appMajor, appMinor, appPatch)
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// Append pre-release version if there is one. The hyphen called for
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// by the semantic versioning spec is automatically appended and should
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// not be contained in the pre-release string. The pre-release version
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// is not appended if it contains invalid characters.
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preRelease := normalizeVerString(appPreRelease)
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if preRelease != "" {
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version = fmt.Sprintf("%s-%s", version, preRelease)
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}
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// Append commit hash of current build to version.
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version = fmt.Sprintf("%s commit=%s", version, Commit)
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return version
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}
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// normalizeVerString returns the passed string stripped of all characters
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// which are not valid according to the semantic versioning guidelines for
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// pre-release version and build metadata strings. In particular they MUST
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// only contain characters in semanticAlphabet.
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func normalizeVerString(str string) string {
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var result bytes.Buffer
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for _, r := range str {
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if strings.ContainsRune(semanticAlphabet, r) {
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result.WriteRune(r)
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}
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}
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return result.String()
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}
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