万能的适应各种编码而且正确的拼接Buffer对象的方法是什么呢?我们从Node.js在github上的源码中找出这样一段正确读取文件,并连接buffer对象的方法:
var buffers = []; var nread = 0; readStream.on('data', function (chunk) { buffers.push(chunk); nread += chunk.length; }); readStream.on('end', function () { var buffer = null; switch(buffers.length) { case 0: buffer = new Buffer(0); break; case 1: buffer = buffers[0]; break; default: buffer = new Buffer(nread); for (var i = 0, pos = 0, l = buffers.length; i < l; i++) { var chunk = buffers[i]; chunk.copy(buffer, pos); pos += chunk.length; } break; } });