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package cmd
import (
"fmt"
"io"
"github.com/muesli/termenv"
)
type CLIError struct {
cause error
printers []Printer
}
func extractCLIError(err error) (CLIError, bool) {
if cliErr, ok := err.(*CLIError); ok {
return *cliErr, true
}
return CLIError{
cause: err,
}, false
}
func NewCLIError(cause error, printers ...Printer) error {
return &CLIError{
cause: cause,
printers: printers,
}
}
func (e CLIError) Error() string {
return e.cause.Error()
}
func (e CLIError) PrintDetails(w io.Writer) {
errPrinter := ColoredBox("error", e.cause.Error())
// Prepend the error printer
e.printers = append([]Printer{errPrinter}, e.printers...)
for _, printer := range e.printers {
w.Write([]byte("\n"))
printer.Print(w)
}
w.Write([]byte("\n"))
}
func (cli CLI) PrintErr(err error) {
if err == nil {
return
}
e, _ := extractCLIError(err)
e.PrintDetails(cli.Stderr)
}
func (cli CLI) PrintWarn(err error) {
if err == nil {
return
}
output := termenv.NewOutput(cli.Stderr)
prefix := output.String("warning:").Background(termenv.ANSIYellow).Foreground(termenv.ANSIBrightWhite).String()
message := output.String(err.Error()).Foreground(termenv.ANSIYellow).String()
fmt.Fprintf(cli.Stderr, "\n%s %s\n\n", prefix, message)
}
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