76 lines
2.5 KiB
Go
76 lines
2.5 KiB
Go
|
// Copyright (c) 2013 The btcsuite developers
|
||
|
|
// Use of this source code is governed by an ISC
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"fmt"
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
// semanticAlphabet
|
||
|
|
const semanticAlphabet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-"
|
||
|
|
|
||
|
|
// These constants define the application version and follow the semantic
|
||
|
|
// versioning 2.0.0 spec (http://semver.org/).
|
||
|
|
const (
|
||
|
|
appMajor uint = 0
|
||
|
|
appMinor uint = 12
|
||
|
|
appPatch uint = 0
|
||
|
|
|
||
|
|
// appPreRelease MUST only contain characters from semanticAlphabet
|
||
|
|
// per the semantic versioning spec.
|
||
|
|
appPreRelease = "beta"
|
||
|
|
)
|
||
|
|
|
||
|
|
// appBuild is defined as a variable so it can be overridden during the build
|
||
|
|
// process with '-ldflags "-X main.appBuild foo' if needed. It MUST only
|
||
|
|
// contain characters from semanticAlphabet per the semantic versioning spec.
|
||
|
|
var appBuild string
|
||
|
|
|
||
|
|
// version returns the application version as a properly formed string per the
|
||
|
|
// semantic versioning 2.0.0 spec (http://semver.org/).
|
||
|
|
func version() string {
|
||
|
|
// Start with the major, minor, and patch versions.
|
||
|
|
version := fmt.Sprintf("%d.%d.%d", appMajor, appMinor, appPatch)
|
||
|
|
|
||
|
|
// Append pre-release version if there is one. The hyphen called for
|
||
|
|
// by the semantic versioning spec is automatically appended and should
|
||
|
|
// not be contained in the pre-release string. The pre-release version
|
||
|
|
// is not appended if it contains invalid characters.
|
||
|
|
preRelease := normalizeVerString(appPreRelease)
|
||
|
|
if preRelease != "" {
|
||
|
|
version = fmt.Sprintf("%s-%s", version, preRelease)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Append build metadata if there is any. The plus called for
|
||
|
|
// by the semantic versioning spec is automatically appended and should
|
||
|
|
// not be contained in the build metadata string. The build metadata
|
||
|
|
// string is not appended if it contains invalid characters.
|
||
|
|
build := normalizeVerString(appBuild)
|
||
|
|
if build != "" {
|
||
|
|
version = fmt.Sprintf("%s+%s", version, build)
|
||
|
|
}
|
||
|
|
|
||
|
|
return version
|
||
|
|
}
|
||
|
|
|
||
|
|
// normalizeVerString returns the passed string stripped of all characters which
|
||
|
|
// are not valid according to the semantic versioning guidelines for pre-release
|
||
|
|
// version and build metadata strings. In particular they MUST only contain
|
||
|
|
// characters in semanticAlphabet.
|
||
|
|
func normalizeVerString(str string) string {
|
||
|
|
var result bytes.Buffer
|
||
|
|
for _, r := range str {
|
||
|
|
if strings.ContainsRune(semanticAlphabet, r) {
|
||
|
|
// Ignoring the error here since it can only fail if
|
||
|
|
// the the system is out of memory and there are much
|
||
|
|
// bigger issues at that point.
|
||
|
|
_, _ = result.WriteRune(r)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return result.String()
|
||
|
|
}
|