doorgo/door/box.go

package door

import "strings"

type BoxStyle struct {
	top_left     string
	top_right    string
	top          string
	side         string
	bottom_left  string
	bottom_right string
	middle_left  string
	middle_right string
}

var boxes = [4]BoxStyle{
	/*
		┌──┐
		│  │
		├──┤
		└──┘
	*/
	BoxStyle{"\xda", "\xbf", "\xc4", "\xb3", "\xc0", "\xd9", "\xc3", "\xb4"},
	/*
		╔══╗
		║  ║
		╠══╣
		╚══╝
	*/
	BoxStyle{"\xc9", "\xbb", "\xcd", "\xba", "\xc8", "\xbc", "\xcc", "\xb9"},
	/*
		╒══╕
		│  │
		╞══╡
		╘══╛
	*/
	BoxStyle{"\xd6", "\xb8", "\xcd", "\xb3", "\xd4", "\xbe", "\xc6", "\xb5"},
	/*
		╓──╖
		║  ║
		╟──╢
		╙──╜
	*/
	BoxStyle{"\xd6", "\xb7", "\xc4", "\xba", "\xd3", "\xbd", "\xc7", "\xb6"}}

var unicode_boxes = []BoxStyle{
	BoxStyle{"\u250c", "\u2510", "\u2500", "\u2502", "\u2514", "\u2518", "\u251c", "\u2524"},
	BoxStyle{"\u2554", "\u2557", "\u2550", "\u2551", "\u255a", "\u255d", "\u2560", "\u2563"},
	BoxStyle{"\u2553", "\u2556", "\u2500", "\u2551", "\u2559", "\u255c", "\u255f", "\u2562"},
	BoxStyle{"\u2552", "\u2555", "\u2550", "\u2502", "\u2558", "\u255b", "\u255e", "\u2561"},
}

type Box struct {
	Width int
	Style int
}

func (b *Box) Top() string {
	var style *BoxStyle
	if Unicode {
		style = &unicode_boxes[b.Style]
	} else {
		style = &boxes[b.Style]
	}
	return style.top_left + strings.Repeat(style.top, b.Width) + style.top_right
}

func (b *Box) Row(text string) string {
	var style *BoxStyle
	if Unicode {
		style = &unicode_boxes[b.Style]
	} else {
		style = &boxes[b.Style]
	}
	return style.side + text + style.side
}

func (b *Box) Middle() string {
	var style *BoxStyle
	if Unicode {
		style = &unicode_boxes[b.Style]
	} else {
		style = &boxes[b.Style]
	}
	return style.middle_left + strings.Repeat(style.top, b.Width) + style.middle_right
}

func (b *Box) Bottom() string {
	var style *BoxStyle
	if Unicode {
		style = &unicode_boxes[b.Style]
	} else {
		style = &boxes[b.Style]
	}
	return style.bottom_left + strings.Repeat(style.top, b.Width) + style.bottom_right
}