You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
112 lines
2.5 KiB
112 lines
2.5 KiB
package survey
|
|
|
|
import (
|
|
"strings"
|
|
|
|
"git.yaojiankang.top/hupeh/gcz/survey/terminal"
|
|
)
|
|
|
|
type Multiline struct {
|
|
Renderer
|
|
Message string
|
|
Default string
|
|
Help string
|
|
}
|
|
|
|
// data available to the templates when processing
|
|
type MultilineTemplateData struct {
|
|
Multiline
|
|
Answer string
|
|
ShowAnswer bool
|
|
ShowHelp bool
|
|
Config *PromptConfig
|
|
}
|
|
|
|
// Templates with Color formatting. See Documentation: https://github.com/mgutz/ansi#style-format
|
|
var MultilineQuestionTemplate = `
|
|
{{- 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 .ShowAnswer}}
|
|
{{- "\n"}}{{color "cyan"}}{{.Answer}}{{color "reset"}}
|
|
{{- if .Answer }}{{ "\n" }}{{ end }}
|
|
{{- else }}
|
|
{{- if .Default}}{{color "white"}}({{.Default}}) {{color "reset"}}{{end}}
|
|
{{- color "cyan"}}[Enter 2 empty lines to finish]{{color "reset"}}
|
|
{{- end}}`
|
|
|
|
func (i *Multiline) Prompt(config *PromptConfig) (interface{}, error) {
|
|
// render the template
|
|
err := i.Render(
|
|
MultilineQuestionTemplate,
|
|
MultilineTemplateData{
|
|
Multiline: *i,
|
|
Config: config,
|
|
},
|
|
)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
// start reading runes from the standard in
|
|
rr := i.NewRuneReader()
|
|
_ = rr.SetTermMode()
|
|
defer func() {
|
|
_ = rr.RestoreTermMode()
|
|
}()
|
|
|
|
cursor := i.NewCursor()
|
|
|
|
multiline := make([]string, 0)
|
|
|
|
emptyOnce := false
|
|
// get the next line
|
|
for {
|
|
var line []rune
|
|
line, err = rr.ReadLine(0)
|
|
if err != nil {
|
|
return string(line), err
|
|
}
|
|
|
|
if string(line) == "" {
|
|
if emptyOnce {
|
|
numLines := len(multiline) + 2
|
|
cursor.PreviousLine(numLines)
|
|
for j := 0; j < numLines; j++ {
|
|
terminal.EraseLine(i.Stdio().Out, terminal.ERASE_LINE_ALL)
|
|
cursor.NextLine(1)
|
|
}
|
|
cursor.PreviousLine(numLines)
|
|
break
|
|
}
|
|
emptyOnce = true
|
|
} else {
|
|
emptyOnce = false
|
|
}
|
|
multiline = append(multiline, string(line))
|
|
}
|
|
|
|
val := strings.Join(multiline, "\n")
|
|
val = strings.TrimSpace(val)
|
|
|
|
// if the line is empty
|
|
if len(val) == 0 {
|
|
// use the default value
|
|
return i.Default, err
|
|
}
|
|
|
|
i.AppendRenderedText(val)
|
|
return val, err
|
|
}
|
|
|
|
func (i *Multiline) Cleanup(config *PromptConfig, val interface{}) error {
|
|
return i.Render(
|
|
MultilineQuestionTemplate,
|
|
MultilineTemplateData{
|
|
Multiline: *i,
|
|
Answer: val.(string),
|
|
ShowAnswer: true,
|
|
Config: config,
|
|
},
|
|
)
|
|
}
|
|
|