mirror of https://github.com/docker/compose.git
102 lines
2.4 KiB
Go
102 lines
2.4 KiB
Go
/*
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Copyright 2020 Docker Compose CLI authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package prompt
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import (
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"fmt"
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"io"
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"github.com/AlecAivazis/survey/v2"
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"github.com/docker/cli/cli/streams"
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"github.com/docker/compose/v2/pkg/utils"
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)
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//go:generate mockgen -destination=./prompt_mock.go -self_package "github.com/docker/compose/v2/pkg/prompt" -package=prompt . UI
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// UI - prompt user input
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type UI interface {
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Confirm(message string, defaultValue bool) (bool, error)
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}
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func NewPrompt(stdin *streams.In, stdout *streams.Out) UI {
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if stdin.IsTerminal() {
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return User{stdin: streamsFileReader{stdin}, stdout: streamsFileWriter{stdout}}
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}
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return Pipe{stdin: stdin, stdout: stdout}
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}
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// User - in a terminal
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type User struct {
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stdout streamsFileWriter
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stdin streamsFileReader
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}
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// adapt streams.Out to terminal.FileWriter
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type streamsFileWriter struct {
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stream *streams.Out
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}
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func (s streamsFileWriter) Write(p []byte) (n int, err error) {
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return s.stream.Write(p)
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}
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func (s streamsFileWriter) Fd() uintptr {
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return s.stream.FD()
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}
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// adapt streams.In to terminal.FileReader
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type streamsFileReader struct {
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stream *streams.In
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}
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func (s streamsFileReader) Read(p []byte) (n int, err error) {
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return s.stream.Read(p)
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}
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func (s streamsFileReader) Fd() uintptr {
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return s.stream.FD()
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}
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// Confirm asks for yes or no input
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func (u User) Confirm(message string, defaultValue bool) (bool, error) {
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qs := &survey.Confirm{
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Message: message,
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Default: defaultValue,
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}
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var b bool
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err := survey.AskOne(qs, &b, func(options *survey.AskOptions) error {
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options.Stdio.In = u.stdin
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options.Stdio.Out = u.stdout
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return nil
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})
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return b, err
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}
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// Pipe - aggregates prompt methods
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type Pipe struct {
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stdout io.Writer
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stdin io.Reader
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}
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// Confirm asks for yes or no input
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func (u Pipe) Confirm(message string, defaultValue bool) (bool, error) {
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fmt.Fprint(u.stdout, message)
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var answer string
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fmt.Scanln(&answer)
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return utils.StringToBool(answer), nil
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}
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