控制台文本格式化工具

cmd-text-format.js

var colors = ['black', 'red', 'green', 'yellow', 'blue', 'magenta', 'cyan', 'white']

function F(text) {
	this.text = text
	this.attr = 0
	this._color = 0
	this._bgColor = 0
}

F.prototype.toString = function() {
	var chars = ''
	if (this.attr > 0) {
		chars += this.attr
	}
	if (this._color > 0) {
		chars = chars ? chars + ';' + this._color : this._color
	}
	if (this._bgColor > 0) {
		chars = chars ? chars + ';' + this._bgColor : this._bgColor
	}
	if (chars) {
		return `\x1b[${chars}m${this.text}\x1b[0m`
	} else {
		return this.text
	}
}

F.prototype.bold = function() {
	this.attr = 1
	return this
}

F.prototype.underscore = function() {
	this.attr = 4
	return this
}

F.prototype.blink = function() {
	this.attr = 5
	return this
}

F.prototype.reverse = function() {
	this.attr = 7
	return this
}

F.prototype.hidden = function() {
	this.attr = 8
	return this
}

F.prototype.color = function(color) {
	var i = colors.indexOf(color)
	if (i === -1) this._color = 0
	else this._color = 30 + i
	return this
}

F.prototype.bgColor = function(color) {
	var i = colors.indexOf(color)
	if (i === -1) this._bgColor = 0
	else this._bgColor = 40 + i
	return this
}

module.exports = F