Zabbix web.page.get chunked response preprocessor

zabbix-agent-http-processor.js

/*
Copyright © 2022 xWTF
This work is free. You can redistribute it and/or modify it under the
terms of the Do What The Fuck You Want To Public License, Version 2,
as published by Sam Hocevar. See the COPYING file or http://www.wtfpl.net/ 
for more details.
*/

// Usage: Create a Javascript preprocessor and copy paste function body into it
function preprocessor() {
    value = value.split('\r\n\r\n');
    var header = value.splice(0, 1)[0];
    value = value.join('\r\n\r\n');

    if (header.indexOf('chunked') == -1) {
        return value;
    }
    var result = '', index = 0;
    while(true) {
        var i = value.indexOf('\r\n', index);
        if (i == -1) {
            break;
        }
        var len = parseInt(value.substring(index, index + i), 16);
        if (len == 0 || isNaN(len)) {
            break;
        }
        index = i + 2;

        result += value.substring(index, index + len);
        index += len + 2;
    };
    return result;
}