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58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
package commands
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import (
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"bufio"
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"context"
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"fmt"
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"io"
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"os"
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"runtime"
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"strings"
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"github.com/docker/cli/cli/streams"
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)
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func prompt(ctx context.Context, ins io.Reader, out io.Writer, msg string) (bool, error) {
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done := make(chan struct{})
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var ok bool
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go func() {
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ok = promptForConfirmation(ins, out, msg)
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close(done)
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}()
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select {
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case <-ctx.Done():
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return false, context.Cause(ctx)
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case <-done:
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return ok, nil
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}
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}
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// promptForConfirmation requests and checks confirmation from user.
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// This will display the provided message followed by ' [y/N] '. If
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// the user input 'y' or 'Y' it returns true other false. If no
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// message is provided "Are you sure you want to proceed? [y/N] "
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// will be used instead.
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//
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// Copied from github.com/docker/cli since the upstream version changed
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// recently with an incompatible change.
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//
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// See https://github.com/docker/buildx/pull/2359#discussion_r1544736494
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// for discussion on the issue.
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func promptForConfirmation(ins io.Reader, outs io.Writer, message string) bool {
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if message == "" {
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message = "Are you sure you want to proceed?"
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}
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message += " [y/N] "
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_, _ = fmt.Fprint(outs, message)
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// On Windows, force the use of the regular OS stdin stream.
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if runtime.GOOS == "windows" {
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ins = streams.NewIn(os.Stdin)
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}
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reader := bufio.NewReader(ins)
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answer, _, _ := reader.ReadLine()
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return strings.ToLower(string(answer)) == "y"
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}
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