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info.go
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info.go
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package version
import (
"bytes"
"fmt"
"runtime"
"strings"
"text/template"
)
// Build information. Populated at build-time.
var (
Version string
Revision string
Branch string
BuildUser string
BuildDate string
GoVersion = runtime.Version()
)
// versionInfoTmpl contains the template used by Info.
var versionInfoTmpl = `
{{.program}}, version {{.version}} (branch: {{.branch}}, revision: {{.revision}})
build user: {{.buildUser}}
build date: {{.buildDate}}
go version: {{.goVersion}}
`
// Print returns version information.
func Print(program string) string {
m := map[string]string{
"program": program,
"version": Version,
"revision": Revision,
"branch": Branch,
"buildUser": BuildUser,
"buildDate": BuildDate,
"goVersion": GoVersion,
}
t := template.Must(template.New("version").Parse(versionInfoTmpl))
var buf bytes.Buffer
if err := t.ExecuteTemplate(&buf, "version", m); err != nil {
panic(err)
}
return strings.TrimSpace(buf.String())
}
// Info returns version, branch and revision information.
func Info() string {
return fmt.Sprintf("(version=%s, branch=%s, revision=%s)", Version, Branch, Revision)
}
// BuildContext returns goVersion, buildUser and buildDate information.
func BuildContext() string {
return fmt.Sprintf("(go=%s, user=%s, date=%s)", GoVersion, BuildUser, BuildDate)
}