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keksAccountGUI/node_modulesOLD/thread-loader/dist/readBuffer.js
2019-08-11 20:48:02 +02:00

44 lines
No EOL
964 B
JavaScript

'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = readBuffer;
function readBuffer(pipe, length, callback) {
if (length === 0) {
callback(null, Buffer.alloc(0));
return;
}
let remainingLength = length;
const buffers = [];
const readChunk = () => {
const onChunk = arg => {
let chunk = arg;
let overflow;
if (chunk.length > remainingLength) {
overflow = chunk.slice(remainingLength);
chunk = chunk.slice(0, remainingLength);
remainingLength = 0;
} else {
remainingLength -= chunk.length;
}
buffers.push(chunk);
if (remainingLength === 0) {
pipe.removeListener('data', onChunk);
pipe.pause();
if (overflow) {
pipe.unshift(overflow);
}
callback(null, Buffer.concat(buffers, length));
}
};
pipe.on('data', onChunk);
pipe.resume();
};
readChunk();
}