01fd2927fe
The semver spec allow the build portion to contain multiple identifiers separated by periods, however, the current code is stripping periods.
96 lines
3.3 KiB
Go
96 lines
3.3 KiB
Go
// Copyright (c) 2013-2014 The btcsuite developers
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// Copyright (c) 2015-2017 The Decred developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package main
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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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const (
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// semanticAlphabet defines the allowed characters for the pre-release
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// portion of a semantic version string.
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semanticAlphabet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-"
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// semanticBuildAlphabet defines the allowed characters for the build
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// portion of a semantic version string.
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semanticBuildAlphabet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-."
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)
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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 = 1
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appMinor uint = 1
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appPatch uint = 2
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// appPreRelease MUST only contain characters from semanticAlphabet
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// per the semantic versioning spec.
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appPreRelease = ""
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)
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// appBuild is defined as a variable so it can be overridden during the build
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// process with '-ldflags "-X main.appBuild=foo' if needed. It MUST only
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// contain characters from semanticBuildAlphabet per the semantic versioning
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// spec.
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var appBuild = "dev"
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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 := normalizePreRelString(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 build metadata if there is any. The plus 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 build metadata string. The build metadata
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// string is not appended if it contains invalid characters.
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build := normalizeBuildString(appBuild)
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if build != "" {
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version = fmt.Sprintf("%s+%s", version, build)
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}
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return version
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}
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// normalizeSemString returns the passed string stripped of all characters
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// which are not valid according to the provided semantic versioning alphabet.
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func normalizeSemString(str, alphabet 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(alphabet, 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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// normalizePreRelString 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 strings. In particular they MUST only contain characters in
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// semanticAlphabet.
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func normalizePreRelString(str string) string {
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return normalizeSemString(str, semanticAlphabet)
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}
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// normalizeBuildString returns the passed string stripped of all characters
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// which are not valid according to the semantic versioning guidelines for build
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// metadata strings. In particular they MUST only contain characters in
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// semanticBuildAlphabet.
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func normalizeBuildString(str string) string {
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return normalizeSemString(str, semanticBuildAlphabet)
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}
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