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/* eslint-disable no-underscore-dangle */
'use strict';
const { Transform } = require('stream');
const querystring = require('querystring');
// This is a buffering parser, not quite as nice as the multipart one.
// If I find time I'll rewrite this to be fully streaming as well
class QuerystringParser extends Transform {
constructor(options = {}) {
super({ readableObjectMode: true });
this.globalOptions = { ...options };
this.buffer = '';
this.bufferLength = 0;
}
_transform(buffer, encoding, callback) {
this.buffer += buffer.toString('ascii');
this.bufferLength = this.buffer.length;
callback();
}
_flush(callback) {
const fields = querystring.parse(this.buffer, '&', '=');
// eslint-disable-next-line no-restricted-syntax, guard-for-in
for (const key in fields) {
this.push({
key,
value: fields[key],
});
}
this.buffer = '';
callback();
}
}
module.exports = QuerystringParser;