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package survey
import (
"fmt"
"strings"
"github.com/AlecAivazis/survey/v2/core"
"github.com/AlecAivazis/survey/v2/terminal"
)
/*
Password is like a normal Input but the text shows up as *'s and there is no default. Response
type is a string.
password := ""
prompt := &survey.Password{ Message: "Please type your password" }
survey.AskOne(prompt, &password)
*/
type Password struct {
Renderer
Message string
Help string
}
type PasswordTemplateData struct {
Password
ShowHelp bool
Config *PromptConfig
}
// PasswordQuestionTemplate is a template with color formatting. See Documentation: https://github.com/mgutz/ansi#style-format
var PasswordQuestionTemplate = `
{{- 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 and .Help (not .ShowHelp)}}{{color "cyan"}}[{{ .Config.HelpInput }} for help]{{color "reset"}} {{end}}`
func (p *Password) Prompt(config *PromptConfig) (interface{}, error) {
// render the question template
userOut, _, err := core.RunTemplate(
PasswordQuestionTemplate,
PasswordTemplateData{
Password: *p,
Config: config,
},
)
if err != nil {
return "", err
}
if _, err := fmt.Fprint(terminal.NewAnsiStdout(p.Stdio().Out), userOut); err != nil {
return "", err
}
rr := p.NewRuneReader()
_ = rr.SetTermMode()
defer func() {
_ = rr.RestoreTermMode()
}()
// no help msg? Just return any response
if p.Help == "" {
line, err := rr.ReadLine(config.HideCharacter)
return string(line), err
}
cursor := p.NewCursor()
var line []rune
// process answers looking for help prompt answer
for {
line, err = rr.ReadLine(config.HideCharacter)
if err != nil {
return string(line), err
}
if string(line) == config.HelpInput {
// terminal will echo the \n so we need to jump back up one row
cursor.PreviousLine(1)
err = p.Render(
PasswordQuestionTemplate,
PasswordTemplateData{
Password: *p,
ShowHelp: true,
Config: config,
},
)
if err != nil {
return "", err
}
continue
}
break
}
lineStr := string(line)
p.AppendRenderedText(strings.Repeat(string(config.HideCharacter), len(lineStr)))
return lineStr, err
}
// Cleanup hides the string with a fixed number of characters.
func (prompt *Password) Cleanup(config *PromptConfig, val interface{}) error {
return nil
}
|
