/
main.go
84 lines (72 loc) · 1.62 KB
/
main.go
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package main
import (
"errors"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"runtime"
"github.com/k0kubun/pp"
flag "github.com/spf13/pflag"
"github.com/nakabonne/ali/gui"
)
var (
flagSet = flag.NewFlagSet("ali", flag.ContinueOnError)
usage = func() {
fmt.Fprintln(os.Stderr, "usage: ali [<flag> ...]")
flagSet.PrintDefaults()
}
// Automatically populated by goreleaser during build
version = "unversioned"
commit = "?"
date = "?"
)
type cli struct {
debug bool
version bool
stdout io.Writer
stderr io.Writer
}
func main() {
c := &cli{
stdout: os.Stdout,
stderr: os.Stderr,
}
flagSet.BoolVarP(&c.version, "version", "v", false, "print the current version")
flagSet.BoolVar(&c.debug, "debug", false, "run in debug mode")
flagSet.Usage = usage
if err := flagSet.Parse(os.Args[1:]); err != nil {
if !errors.Is(err, flag.ErrHelp) {
fmt.Fprintln(c.stderr, err)
}
return
}
os.Exit(c.run())
}
func (c *cli) run() int {
if c.version {
fmt.Fprintf(c.stderr, "version=%s, commit=%s, buildDate=%s, os=%s, arch=%s\n", version, commit, date, runtime.GOOS, runtime.GOARCH)
return 0
}
setDebug(nil, c.debug)
if err := gui.Run(); err != nil {
fmt.Fprintf(c.stderr, "failed to start application: %s", err.Error())
return 1
}
return 0
}
// Makes a new file under the working directory only when debug use.
func setDebug(w io.Writer, debug bool) {
if !debug {
pp.SetDefaultOutput(ioutil.Discard)
}
if w == nil {
var err error
w, err = os.OpenFile(filepath.Join(".", "ali-debug.log"), os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
if err != nil {
panic(err)
}
}
pp.SetDefaultOutput(w)
}