复制

以 node 复制文件

var fs = require('fs');
var path = require('path');

function copy(obj) {
    fs.readFile(obj.origin, 'utf-8', function(err, data) {
        if (err) {
            console.error(err);
        } else {
            fs.writeFile(obj.target, data, 'utf-8', function(err) {
                if (err) {
                    console.error(err);
                } else {
                    console.log('\x1B[32m%s\x1B[39m', '复制成功--------' + obj.name);
                }
            });
        }
    });
}

function resolve(dir) {
    return path.join(__dirname, '..', dir)
}

var qurConfig = {
    name: 'require.config.js',
    origin: resolve('/src/public/js/request.config.js'),
    target: resolve('/knowledge/static/js/request.config.js')
};

copy(qurConfig);

 

以上只是一个复制文件的，经过学习，下面做了个复制文件夹的

const EventEmitter = require('events');
const fs = require('fs');

const myEvents = new EventEmitter();

myEvents.on('test', () => {
    creatDir('../nodelearn/', '../github/', copy);
});

myEvents.emit('test');



function copy(f, t) {
    fs.readdir(f, (err, files) => {
        if (err) {
            throw err;
            return;
        }
        files.forEach((file) => {
            var _f = f + '/' + file;
            var _t = t + '/' + file;
            fs.stat(_f, (err, stats) => {
                if (err) {
                    throw err;
                    return;
                }
                if (stats.isFile()) {
                    var readStream = fs.createReadStream(_f);
                    var writeStream = fs.createWriteStream(_t);
                    readStream.pipe(writeStream);
                } else if (stats.isDirectory()) {
                    creatDir(_f, _t, copy);
                }
            });
        });
    })
}

function creatDir(_f, _t, callback) {
    fs.access(_t, fs.constants.R_OK | fs.constants.W_OK, (err) => {
        if (err) {
            fs.mkdir(_t, () => {
                callback(_f, _t);
            });
        } else {
            callback(_f, _t);
        }
    })
}