Node.js 之 cli-color

来自 https://www.npmjs.com/package/cli-color

简介

Colors, formatting and other tools for the console

改变控制台输出文本的颜色、文本格式化。

安装

如果安装速度慢可以使用npm淘宝镜像。

$ npm install cli-color

使用

var clc = require('cli-color');// 输出红色文本console.log(clc.red('Text in red'));// 白色背景的红色文字，并且带有下划线console.log(clc.red.bgWhite.underline('Underlined red text on white background.'));// 混合使用带样式的文本和普通文本console.log(clc.red('red') + ' plain ' + clc.blue('blue'));// 可以嵌套console.log(clc.red('red ' + clc.blue('blue') + ' red'));

一种优雅的使用方法

var error = clc.red.bold;var warn = clc.yellow;var notice = clc.blue;console.log(error('Error!'));console.log(warn('Warning'));console.log(notice('Notice'));

样式

• bold
• italic
• underline
• blink
• inverse
• strike

颜色

参考 https://www.npmjs.com/package/cli-color

重置

当前应用的所有控制台显示被清空。

process.stdout.write(clc.reset);

清除

process.stdout.write(clc.erase.screen);process.stdout.write(clc.erase.screenLeft);process.stdout.write(clc.erase.screenRight);process.stdout.write(clc.erase.line);process.stdout.write(clc.erase.lineRight);process.stdout.write(clc.erase.lineLeft);

移动插入符位置

// Move cursors two columns and two rows backprocess.stdout.write(clc.move(-2, -2));// Move cursor to first row and first column in terminal windowprocess.stdout.write(clc.move.to(0, 0));// 向上移动两行process.stdout.write(clc.move.up(2));// 向下移动两行process.stdout.write(clc.move.down(2));// 向右移动两列process.stdout.write(clc.move.right(2));// 向左移动两列process.stdout.write(clc.move.left(2));// 向下移动两行，如果为负值则向上移动process.stdout.write(clc.move.lines(2));

获得控制台窗口宽度高度（字符数）

clc.widnowSize.widthclc.windowSize.height

其他功能

clc.slice

var clc = require('cli-color')var str = clc.bold('foo') + 'bar' + clc.red('elo');var sliced = clc.slice(str, 1, 7); // Same as: clc.bold('oo') + 'bar' + clc.red('e')

clc.strip

var ansiStrip = require('cli-color/strip');var plain = ansiStrip(formatted);

clc.getStrippedLength

var clc = require('cli-color');var str = clc.bold('foo') + 'bar' + clc.red('elo');clc.getStrippedLength(str); // 9 

clc.art

var text = '.........\n' +    '. Hello .\n' +    '.........\n';var style = { ".": clc.yellowBright("X") };process.stdout.write(clc.art(text, style));

throbber 动态风火轮

类似npm安装某个包时的动态图示。

var setupThrobber = require('cli-color/throbber');var throbber = setupThrobber(function (str) {  process.stdout.write(str);}, 200);throbber.start();// at any time you can stop/start throbber throbber.stop();