mirror of https://gitea.com/gitea/tea.git
154 lines
3.6 KiB
Go
154 lines
3.6 KiB
Go
package survey
|
|
|
|
import (
|
|
"fmt"
|
|
"regexp"
|
|
)
|
|
|
|
// Confirm is a regular text input that accept yes/no answers. Response type is a bool.
|
|
type Confirm struct {
|
|
Renderer
|
|
Message string
|
|
Default bool
|
|
Help string
|
|
}
|
|
|
|
// data available to the templates when processing
|
|
type ConfirmTemplateData struct {
|
|
Confirm
|
|
Answer string
|
|
ShowHelp bool
|
|
Config *PromptConfig
|
|
}
|
|
|
|
// Templates with Color formatting. See Documentation: https://github.com/mgutz/ansi#style-format
|
|
var ConfirmQuestionTemplate = `
|
|
{{- if .ShowHelp }}{{- color .Config.Icons.Help.Format }}{{ .Config.Icons.Help.Text }} {{ .Help }}{{color "reset"}}{{"\n"}}{{end}}
|
|
{{- color .Config.Icons.Question.Format }}{{ .Config.Icons.Question.Text }} {{color "reset"}}
|
|
{{- color "default+hb"}}{{ .Message }} {{color "reset"}}
|
|
{{- if .Answer}}
|
|
{{- color "cyan"}}{{.Answer}}{{color "reset"}}{{"\n"}}
|
|
{{- else }}
|
|
{{- if and .Help (not .ShowHelp)}}{{color "cyan"}}[{{ .Config.HelpInput }} for help]{{color "reset"}} {{end}}
|
|
{{- color "white"}}{{if .Default}}(Y/n) {{else}}(y/N) {{end}}{{color "reset"}}
|
|
{{- end}}`
|
|
|
|
// the regex for answers
|
|
var (
|
|
yesRx = regexp.MustCompile("^(?i:y(?:es)?)$")
|
|
noRx = regexp.MustCompile("^(?i:n(?:o)?)$")
|
|
)
|
|
|
|
func yesNo(t bool) string {
|
|
if t {
|
|
return "Yes"
|
|
}
|
|
return "No"
|
|
}
|
|
|
|
func (c *Confirm) getBool(showHelp bool, config *PromptConfig) (bool, error) {
|
|
cursor := c.NewCursor()
|
|
rr := c.NewRuneReader()
|
|
rr.SetTermMode()
|
|
defer rr.RestoreTermMode()
|
|
|
|
// start waiting for input
|
|
for {
|
|
line, err := rr.ReadLine(0)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
// move back up a line to compensate for the \n echoed from terminal
|
|
cursor.PreviousLine(1)
|
|
val := string(line)
|
|
|
|
// get the answer that matches the
|
|
var answer bool
|
|
switch {
|
|
case yesRx.Match([]byte(val)):
|
|
answer = true
|
|
case noRx.Match([]byte(val)):
|
|
answer = false
|
|
case val == "":
|
|
answer = c.Default
|
|
case val == config.HelpInput && c.Help != "":
|
|
err := c.Render(
|
|
ConfirmQuestionTemplate,
|
|
ConfirmTemplateData{
|
|
Confirm: *c,
|
|
ShowHelp: true,
|
|
Config: config,
|
|
},
|
|
)
|
|
if err != nil {
|
|
// use the default value and bubble up
|
|
return c.Default, err
|
|
}
|
|
showHelp = true
|
|
continue
|
|
default:
|
|
// we didnt get a valid answer, so print error and prompt again
|
|
if err := c.Error(config, fmt.Errorf("%q is not a valid answer, please try again.", val)); err != nil {
|
|
return c.Default, err
|
|
}
|
|
err := c.Render(
|
|
ConfirmQuestionTemplate,
|
|
ConfirmTemplateData{
|
|
Confirm: *c,
|
|
ShowHelp: showHelp,
|
|
Config: config,
|
|
},
|
|
)
|
|
if err != nil {
|
|
// use the default value and bubble up
|
|
return c.Default, err
|
|
}
|
|
continue
|
|
}
|
|
return answer, nil
|
|
}
|
|
// should not get here
|
|
return c.Default, nil
|
|
}
|
|
|
|
/*
|
|
Prompt prompts the user with a simple text field and expects a reply followed
|
|
by a carriage return.
|
|
|
|
likesPie := false
|
|
prompt := &survey.Confirm{ Message: "What is your name?" }
|
|
survey.AskOne(prompt, &likesPie)
|
|
*/
|
|
func (c *Confirm) Prompt(config *PromptConfig) (interface{}, error) {
|
|
// render the question template
|
|
err := c.Render(
|
|
ConfirmQuestionTemplate,
|
|
ConfirmTemplateData{
|
|
Confirm: *c,
|
|
Config: config,
|
|
},
|
|
)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
// get input and return
|
|
return c.getBool(false, config)
|
|
}
|
|
|
|
// Cleanup overwrite the line with the finalized formatted version
|
|
func (c *Confirm) Cleanup(config *PromptConfig, val interface{}) error {
|
|
// if the value was previously true
|
|
ans := yesNo(val.(bool))
|
|
|
|
// render the template
|
|
return c.Render(
|
|
ConfirmQuestionTemplate,
|
|
ConfirmTemplateData{
|
|
Confirm: *c,
|
|
Answer: ans,
|
|
Config: config,
|
|
},
|
|
)
|
|
}
|