source: code/trunk/version.go@ 19

package suwako

import (
        "fmt"
        "runtime/debug"
        "strings"
)

const (
        defaultVersion = "0.0.0"
        defaultCommit  = "HEAD"
        defaultBuild   = "0000-01-01:00:00+00:00"
)

var (
        // Version is the tagged release version in the form <major>.<minor>.<patch>
        // following semantic versioning and is overwritten by the build system.
        Version = defaultVersion

        // Commit is the commit sha of the build (normally from Git) and is overwritten
        // by the build system.
        Commit = defaultCommit

        // Build is the date and time of the build as an RFC3339 formatted string
        // and is overwritten by the build system.
        Build = defaultBuild
)

// FullVersion display the full version and build
func FullVersion() string {
        var sb strings.Builder

        isDefault := Version == defaultVersion && Commit == defaultCommit && Build == defaultBuild

        if !isDefault {
                sb.WriteString(fmt.Sprintf("%s@%s %s", Version, Commit, Build))
        }

        if info, ok := debug.ReadBuildInfo(); ok {
                if isDefault {
                        sb.WriteString(fmt.Sprintf(" %s", info.Main.Version))
                }
                sb.WriteString(fmt.Sprintf(" %s", info.GoVersion))
                if info.Main.Sum != "" {
                        sb.WriteString(fmt.Sprintf(" %s", info.Main.Sum))
                }
        }

        return sb.String()
}