short-name aliasing

Add support for short-name aliasing.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

vendor/github.com/manifoldco/promptui/codes.go

@@ -0,0 +1,120 @@
+package promptui
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"text/template"
+)
+
+const esc = "\033["
+
+type attribute int
+
+// The possible state of text inside the application, either Bold, faint, italic or underline.
+//
+// These constants are called through the use of the Styler function.
+const (
+	reset attribute = iota
+
+	FGBold
+	FGFaint
+	FGItalic
+	FGUnderline
+)
+
+// The possible colors of text inside the application.
+//
+// These constants are called through the use of the Styler function.
+const (
+	FGBlack attribute = iota + 30
+	FGRed
+	FGGreen
+	FGYellow
+	FGBlue
+	FGMagenta
+	FGCyan
+	FGWhite
+)
+
+// The possible background colors of text inside the application.
+//
+// These constants are called through the use of the Styler function.
+const (
+	BGBlack attribute = iota + 40
+	BGRed
+	BGGreen
+	BGYellow
+	BGBlue
+	BGMagenta
+	BGCyan
+	BGWhite
+)
+
+// ResetCode is the character code used to reset the terminal formatting
+var ResetCode = fmt.Sprintf("%s%dm", esc, reset)
+
+const (
+	hideCursor = esc + "?25l"
+	showCursor = esc + "?25h"
+	clearLine  = esc + "2K"
+)
+
+// FuncMap defines template helpers for the output. It can be extended as a regular map.
+//
+// The functions inside the map link the state, color and background colors strings detected in templates to a Styler
+// function that applies the given style using the corresponding constant.
+var FuncMap = template.FuncMap{
+	"black":     Styler(FGBlack),
+	"red":       Styler(FGRed),
+	"green":     Styler(FGGreen),
+	"yellow":    Styler(FGYellow),
+	"blue":      Styler(FGBlue),
+	"magenta":   Styler(FGMagenta),
+	"cyan":      Styler(FGCyan),
+	"white":     Styler(FGWhite),
+	"bgBlack":   Styler(BGBlack),
+	"bgRed":     Styler(BGRed),
+	"bgGreen":   Styler(BGGreen),
+	"bgYellow":  Styler(BGYellow),
+	"bgBlue":    Styler(BGBlue),
+	"bgMagenta": Styler(BGMagenta),
+	"bgCyan":    Styler(BGCyan),
+	"bgWhite":   Styler(BGWhite),
+	"bold":      Styler(FGBold),
+	"faint":     Styler(FGFaint),
+	"italic":    Styler(FGItalic),
+	"underline": Styler(FGUnderline),
+}
+
+func upLine(n uint) string {
+	return movementCode(n, 'A')
+}
+
+func movementCode(n uint, code rune) string {
+	return esc + strconv.FormatUint(uint64(n), 10) + string(code)
+}
+
+// Styler is a function that accepts multiple possible styling transforms from the state,
+// color and background colors constants and transforms them into a templated string
+// to apply those styles in the CLI.
+//
+// The returned styling function accepts a string that will be extended with
+// the wrapping function's styling attributes.
+func Styler(attrs ...attribute) func(interface{}) string {
+	attrstrs := make([]string, len(attrs))
+	for i, v := range attrs {
+		attrstrs[i] = strconv.Itoa(int(v))
+	}
+
+	seq := strings.Join(attrstrs, ";")
+
+	return func(v interface{}) string {
+		end := ""
+		s, ok := v.(string)
+		if !ok || !strings.HasSuffix(s, ResetCode) {
+			end = ResetCode
+		}
+		return fmt.Sprintf("%s%sm%v%s", esc, seq, v, end)
+	}
+}