98 lines
2.3 KiB
Go
98 lines
2.3 KiB
Go
package survey
|
|
|
|
import (
|
|
"gopkg.in/AlecAivazis/survey.v1/core"
|
|
)
|
|
|
|
/*
|
|
Input is a regular text input that prints each character the user types on the screen
|
|
and accepts the input with the enter key. Response type is a string.
|
|
|
|
name := ""
|
|
prompt := &survey.Input{ Message: "What is your name?" }
|
|
survey.AskOne(prompt, &name, nil)
|
|
*/
|
|
type Input struct {
|
|
core.Renderer
|
|
Message string
|
|
Default string
|
|
Help string
|
|
}
|
|
|
|
// data available to the templates when processing
|
|
type InputTemplateData struct {
|
|
Input
|
|
Answer string
|
|
ShowAnswer bool
|
|
ShowHelp bool
|
|
}
|
|
|
|
// Templates with Color formatting. See Documentation: https://github.com/mgutz/ansi#style-format
|
|
var InputQuestionTemplate = `
|
|
{{- if .ShowHelp }}{{- color "cyan"}}{{ HelpIcon }} {{ .Help }}{{color "reset"}}{{"\n"}}{{end}}
|
|
{{- color "green+hb"}}{{ QuestionIcon }} {{color "reset"}}
|
|
{{- color "default+hb"}}{{ .Message }} {{color "reset"}}
|
|
{{- if .ShowAnswer}}
|
|
{{- color "cyan"}}{{.Answer}}{{color "reset"}}{{"\n"}}
|
|
{{- else }}
|
|
{{- if and .Help (not .ShowHelp)}}{{color "cyan"}}[{{ HelpInputRune }} for help]{{color "reset"}} {{end}}
|
|
{{- if .Default}}{{color "white"}}({{.Default}}) {{color "reset"}}{{end}}
|
|
{{- end}}`
|
|
|
|
func (i *Input) Prompt() (interface{}, error) {
|
|
// render the template
|
|
err := i.Render(
|
|
InputQuestionTemplate,
|
|
InputTemplateData{Input: *i},
|
|
)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
// start reading runes from the standard in
|
|
rr := i.NewRuneReader()
|
|
rr.SetTermMode()
|
|
defer rr.RestoreTermMode()
|
|
|
|
cursor := i.NewCursor()
|
|
|
|
line := []rune{}
|
|
// get the next line
|
|
for {
|
|
line, err = rr.ReadLine(0)
|
|
if err != nil {
|
|
return string(line), err
|
|
}
|
|
// terminal will echo the \n so we need to jump back up one row
|
|
cursor.PreviousLine(1)
|
|
|
|
if string(line) == string(core.HelpInputRune) && i.Help != "" {
|
|
err = i.Render(
|
|
InputQuestionTemplate,
|
|
InputTemplateData{Input: *i, ShowHelp: true},
|
|
)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
continue
|
|
}
|
|
break
|
|
}
|
|
|
|
// if the line is empty
|
|
if line == nil || len(line) == 0 {
|
|
// use the default value
|
|
return i.Default, err
|
|
}
|
|
|
|
// we're done
|
|
return string(line), err
|
|
}
|
|
|
|
func (i *Input) Cleanup(val interface{}) error {
|
|
return i.Render(
|
|
InputQuestionTemplate,
|
|
InputTemplateData{Input: *i, Answer: val.(string), ShowAnswer: true},
|
|
)
|
|
}
|