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package program
import (
"fmt"
"os"
"runtime"
"github.com/elves/elvish/buildinfo"
daemonsvc "github.com/elves/elvish/daemon"
"github.com/elves/elvish/program/daemon"
)
// ShowHelp shows help message.
type ShowHelp struct {
flag *flagSet
}
func (s ShowHelp) Main([]string) int {
usage(os.Stdout, s.flag)
return 0
}
type ShowCorrectUsage struct {
message string
flag *flagSet
}
func (s ShowCorrectUsage) Main([]string) int {
usage(os.Stderr, s.flag)
return 2
}
// ShowVersion shows the version.
type ShowVersion struct{}
func (ShowVersion) Main([]string) int {
fmt.Println(buildinfo.Version)
return 0
}
// ShowBuildInfo shows build information.
type ShowBuildInfo struct {
JSON bool
}
func (info ShowBuildInfo) Main([]string) int {
if info.JSON {
fmt.Printf(`{"version": %s,`, quoteJSON(buildinfo.Version))
fmt.Printf(` "goversion": %s,`, quoteJSON(runtime.Version()))
fmt.Printf(` "goroot": %s,`, quoteJSON(buildinfo.GoRoot))
fmt.Printf(` "gopath": %s}`, quoteJSON(buildinfo.GoPath))
fmt.Println()
} else {
fmt.Println("Version:", buildinfo.Version)
fmt.Println("Go version:", runtime.Version())
fmt.Println("GOROOT at build time:", buildinfo.GoRoot)
fmt.Println("GOPATH at build time:", buildinfo.GoPath)
}
return 0
}
// Daemon runs the daemon subprogram.
type Daemon struct {
inner *daemon.Daemon
}
func (d Daemon) Main([]string) int {
err := d.inner.Main(daemonsvc.Serve)
if err != nil {
logger.Println("daemon error:", err)
return 2
}
return 0
}
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