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build.go
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build.go
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package cli
import (
"fmt"
"os"
"strings"
)
const devVersion = "0.5.1"
type BuildInfo struct {
Version string
Date string
}
func (e BuildInfo) empty() bool {
return e == BuildInfo{}
}
var globalBuildInfo BuildInfo
func SetBuildInfo(info BuildInfo) {
globalBuildInfo = info
}
func buildInfo() BuildInfo {
info := globalBuildInfo
if info.empty() {
return defaultBuildInfo()
}
return info
}
func buildStamp() string {
info := buildInfo()
version := info.Version
date := info.Date
timeIndex := strings.Index(date, "T")
if timeIndex != -1 {
date = date[0:timeIndex]
}
return fmt.Sprintf("v%s, built %s", version, date)
}
// Returns a build datestamp in the format 2018-08-30
func defaultBuildDate() string {
// TODO(nick): Add a mechanism to encode the datestamp in the binary with
// ldflags. This currently only works if you are building your own
// binaries. It won't work once we're distributing pre-built binaries.
path, err := os.Executable()
if err != nil {
return "[unknown]"
}
info, err := os.Stat(path)
if err != nil {
return "[unknown]"
}
modTime := info.ModTime()
return modTime.Format("2006-01-02")
}
// Returns a build datestamp in the format 2018-08-30
func defaultBuildInfo() BuildInfo {
return BuildInfo{
Date: defaultBuildDate(),
Version: fmt.Sprintf("%s-dev", devVersion),
}
}