Node.JS 数据输入流

Question

是否有输入流扩展，以便我可以像以前那样调用方法

例如

stdin.readData(function (err, buffer) { // err if an error event was created, buffer if this is just data, null to both if the end of the stream was reached.
    // Added bonuses would be other methods I am used to in Java
    // - readLine
    // - readFully
    // - readStringUtf8
    // - readInt, readDouble, readBoolean, etc.
})

后端将监听 data、end 和 error 事件并自动缓冲它们，并在我调用 readData 时让它们可用。

Answer 1

这个功能并不难实现。您所要做的就是获取 ReadableStream 原型(prototype)并实现.read方法

未经测试的代码:

var ReadableStream = Object.getPrototypeOf(process.stdin);

ReadableStream.read = function(cb) {
    this.on('data', function(buf) {
        cb(null, buf);
    });

    this.on('error', function(err) {
        cb(err, null);    
    });

    this.on('end', function() {
        cb(null, null);
    });

    this.on('close', function() {
        cb(new Error("Stream closed"), null);
    });
};