93 lines
1.7 KiB
Go
93 lines
1.7 KiB
Go
package cli
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import (
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"errors"
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"fmt"
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"io"
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"os"
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"os/signal"
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"syscall"
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ufcli "github.com/urfave/cli/v2"
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)
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type PrintHelpErr struct {
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Err error
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Ctx *ufcli.Context
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}
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func (e *PrintHelpErr) Error() string {
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return e.Err.Error()
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}
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func (e *PrintHelpErr) Unwrap() error {
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return e.Err
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}
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func (e *PrintHelpErr) Is(o error) bool {
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_, ok := o.(*PrintHelpErr)
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return ok
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}
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func ShowHelp(cctx *ufcli.Context, err error) error {
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return &PrintHelpErr{Err: err, Ctx: cctx}
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}
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func IncorrectNumArgs(cctx *ufcli.Context) error {
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return ShowHelp(cctx, fmt.Errorf("incorrect number of arguments, got %d", cctx.NArg()))
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}
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func RunApp(app *ufcli.App) {
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c := make(chan os.Signal, 1)
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signal.Notify(c, syscall.SIGTERM, syscall.SIGINT)
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go func() {
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<-c
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os.Exit(1)
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}()
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if err := app.Run(os.Args); err != nil {
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if os.Getenv("LOTUS_DEV") != "" {
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log.Warnf("%+v", err)
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} else {
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fmt.Fprintf(os.Stderr, "ERROR: %s\n\n", err) // nolint:errcheck
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}
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var phe *PrintHelpErr
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if errors.As(err, &phe) {
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_ = ufcli.ShowCommandHelp(phe.Ctx, phe.Ctx.Command.Name)
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}
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os.Exit(1)
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}
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}
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type AppFmt struct {
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app *ufcli.App
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Stdin io.Reader
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}
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func NewAppFmt(a *ufcli.App) *AppFmt {
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var stdin io.Reader
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istdin, ok := a.Metadata["stdin"]
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if ok {
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stdin = istdin.(io.Reader)
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} else {
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stdin = os.Stdin
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}
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return &AppFmt{app: a, Stdin: stdin}
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}
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func (a *AppFmt) Print(args ...interface{}) {
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_, _ = fmt.Fprint(a.app.Writer, args...)
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}
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func (a *AppFmt) Println(args ...interface{}) {
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_, _ = fmt.Fprintln(a.app.Writer, args...)
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}
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func (a *AppFmt) Printf(fmtstr string, args ...interface{}) {
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_, _ = fmt.Fprintf(a.app.Writer, fmtstr, args...)
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}
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func (a *AppFmt) Scan(args ...interface{}) (int, error) {
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return fmt.Fscan(a.Stdin, args...)
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}
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