init

vendor/github.com/AlecAivazis/survey/multiline.go

@@ -0,0 +1,103 @@
+package survey
+
+import (
+	"fmt"
+	"strings"
+
+	"gopkg.in/AlecAivazis/survey.v1/core"
+	"gopkg.in/AlecAivazis/survey.v1/terminal"
+)
+
+type Multiline struct {
+	core.Renderer
+	Message string
+	Default string
+	Help    string
+}
+
+// data available to the templates when processing
+type MultilineTemplateData struct {
+	Multiline
+	Answer     string
+	ShowAnswer bool
+	ShowHelp   bool
+}
+
+// Templates with Color formatting. See Documentation: https://github.com/mgutz/ansi#style-format
+var MultilineQuestionTemplate = `
+{{- if .ShowHelp }}{{- color "cyan"}}{{ HelpIcon }} {{ .Help }}{{color "reset"}}{{"\n"}}{{end}}
+{{- color "green+hb"}}{{ QuestionIcon }} {{color "reset"}}
+{{- color "default+hb"}}{{ .Message }} {{color "reset"}}
+{{- if .ShowAnswer}}
+  {{- "\n"}}{{color "cyan"}}{{.Answer}}{{color "reset"}}{{"\n"}}
+{{- else }}
+  {{- if .Default}}{{color "white"}}({{.Default}}) {{color "reset"}}{{end}}
+  {{- color "cyan"}}[Enter 2 empty lines to finish]{{color "reset"}}
+{{- end}}`
+
+func (i *Multiline) Prompt() (interface{}, error) {
+	// render the template
+	err := i.Render(
+		MultilineQuestionTemplate,
+		MultilineTemplateData{Multiline: *i},
+	)
+	if err != nil {
+		return "", err
+	}
+	fmt.Println()
+
+	// start reading runes from the standard in
+	rr := i.NewRuneReader()
+	rr.SetTermMode()
+	defer rr.RestoreTermMode()
+
+	cursor := i.NewCursor()
+
+	multiline := make([]string, 0)
+
+	emptyOnce := false
+	// get the next line
+	for {
+		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
+	}
+
+	// we're done
+	return val, err
+}
+
+func (i *Multiline) Cleanup(val interface{}) error {
+	return i.Render(
+		MultilineQuestionTemplate,
+		MultilineTemplateData{Multiline: *i, Answer: val.(string), ShowAnswer: true},
+	)
+}