lotus/cli/helper.go

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package cli
import (
"fmt"
"os"
"github.com/urfave/cli/v2"
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"golang.org/x/xerrors"
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)
type PrintHelpErr struct {
Err error
Ctx *cli.Context
}
func (e *PrintHelpErr) Error() string {
return e.Err.Error()
}
func (e *PrintHelpErr) Unwrap() error {
return e.Err
}
func (e *PrintHelpErr) Is(o error) bool {
_, ok := o.(*PrintHelpErr)
return ok
}
func ShowHelp(cctx *cli.Context, err error) error {
return &PrintHelpErr{Err: err, Ctx: cctx}
}
func RunApp(app *cli.App) {
if err := app.Run(os.Args); err != nil {
if os.Getenv("LOTUS_DEV") != "" {
log.Warnf("%+v", err)
} else {
fmt.Printf("ERROR: %s\n\n", err)
}
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var phe *PrintHelpErr
if xerrors.As(err, &phe) {
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cli.ShowCommandHelp(phe.Ctx, phe.Ctx.Command.Name)
}
os.Exit(1)
}
}