I have a an array containing buffer data as below
[{ Buffer_Data: <Buffer b5 eb 2d> },{ Buffer_Data: <Buffer b5 eb 2d> },{ Buffer_Data: <Buffer b5 eb 2d> },{ Buffer_Data: <Buffer b5 eb 2d> }]
I want double quotes to be added to both key and values and the result should be as below.
[{ "Buffer_Data": "<Buffer b5 eb 2d>" },{ "Buffer_Data": "<Buffer b5 eb 2d>" },{ "Buffer_Data": "<Buffer b5 eb 2d>" },{ "Buffer_Data": "<Buffer b5 eb 2d>" }]
I have tried JSON.stringify but it is giving me the buffer data in invalid format. How can I convert this to array with double quotes. Please help
Here is my code
stream = fs.createReadStream('files/uploaded_files/' + req.body.fileName);
var bufferdata = [];
stream.on('data', async function (chunk) {
var obj = {};
obj.Buffer_Data = Buffer.from(chunk.toString('binary'), 'base64');
bufferdata.push(obj)
});
stream.on('end', async function(){
var new_buffer_data = JSON.stringify(bufferdata) // This is giving invalid value
})
Code I tried
stream = fs.createReadStream('files/uploaded_files/' + req.body.fileName);
var bufferdata = [];
stream.on('data', async function (chunk) {
var bytes = chunk.map(str => parseInt(str, 16));
const buf = Buffer.from(bytes);
var obj = {};
obj.Buffer_Data = buf;
buffer.push(obj)
});
stream.on('end', async function(){
const stringified = JSON.stringify(buffer.map(obj => ({Buffer_Data: stringifyBuffer(obj.Buffer_Data)})));
console.log(stringified);
})
You can stringify the array of objects with Buffer data in the format that you specified using this method:
./so-71389714.mjs:
import {Buffer} from 'buffer';
function stringifyBuffer (buf) {
let result = '<Buffer';
for (const byte of buf) {
result += ` ${byte.toString(16)}`;
}
result += '>';
return result;
}
const bytes = ['b5', 'eb', '2d'].map(str => parseInt(str, 16));
const buf = Buffer.from(bytes);
const obj = {Buffer_Data: buf};
// This is the array in your question
const array = [obj, obj, obj, obj];
const stringified = JSON.stringify(array.map(obj => ({Buffer_Data: stringifyBuffer(obj.Buffer_Data)})));
console.log(stringified);
$ node so-71389714.mjs
[{"Buffer_Data":"<Buffer b5 eb 2d>"},{"Buffer_Data":"<Buffer b5 eb 2d>"},{"Buffer_Data":"<Buffer b5 eb 2d>"},{"Buffer_Data":"<Buffer b5 eb 2d>"}]