@swordev/php-unserialize/lib/index.js

PHP unserialize function

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.unserialize = void 0;
function readUntil(array, keywords) {
    var value = "";
    while (array.offset < array.length &&
        keywords.indexOf(array[array.offset]) === -1) {
        value += array[array.offset];
        array.offset += 1;
    }
    if (array.offset < array.length)
        array.offset += 1;
    return value;
}
function readString(array) {
    readUntil(array, ":");
    readUntil(array, '"');
    var string = readUntil(array, '"');
    readUntil(array, ";");
    return string;
}
function readNumber(array, keyword) {
    if (keyword === void 0) { keyword = ";"; }
    var numberString = readUntil(array, keyword);
    var number = Number(numberString);
    if (Number.isNaN(number))
        throw new Error("Parse error: \"" + numberString + "\" is not a number.");
    return number;
}
function readBoolean(array) {
    var booleanString = readUntil(array, ";");
    if (booleanString !== "0" && booleanString !== "1")
        throw new Error("Parse error: \"" + booleanString + "\" is not a boolean number.");
    var boolean = !!+booleanString;
    return boolean;
}
// eslint-disable-next-line @typescript-eslint/no-unused-vars
function readNull(array) {
    return null;
}
function readArray(array) {
    var length = readNumber(array, ":");
    var resultArray = [];
    // Shift out first bracket.
    readUntil(array, "{");
    for (var i = 0; i < length; i++) {
        var key = readValue(array);
        var value = readValue(array);
        resultArray[key] = value;
    }
    readUntil(array, "}");
    return resultArray;
}
function readName(array) {
    readUntil(array, ":");
    readUntil(array, '"');
    var name = readUntil(array, '"');
    readUntil(array, ":");
    return name;
}
function readObject(array) {
    var resultObjectName = readName(array);
    var resultObject = {};
    var insideResultObject = (resultObject[resultObjectName] = {});
    var length = readNumber(array, ":");
    readUntil(array, "{");
    for (var i = 0; i < length; i++) {
        var key = readValue(array);
        var value = readValue(array);
        insideResultObject[key] = value;
    }
    readUntil(array, "}");
    return resultObject;
}
function readClass(array) {
    var resultClassName = readName(array);
    var resultClass = {};
    var insideResultClass = (resultClass[resultClassName] = []);
    var length = readNumber(array, ":");
    readUntil(array, "{");
    for (var i = 0; i < length; i++) {
        var value = readValue(array);
        insideResultClass.push(value);
    }
    readUntil(array, "}");
    return resultClass;
}
function readValue(array) {
    var type = readUntil(array, ":;");
    switch (type.toLowerCase()) {
        case "s": // s:len<string>:"<string>";
            return readString(array);
        case "i": // i:<integer>;
        case "d": // d:<float>;
        case "r": // r:<integer>;
            return readNumber(array);
        case "a": // a:len<array>:{<key>;<val>.....}
            return readArray(array);
        case "o": // o:len<object_class_name>:<object_class_name>:len<object>:{<key>;<val>....}
            return readObject(array);
        case "c": // c:len<class_name>:"<class_name>":len<val>:{<val>}
            return readClass(array);
        case "b": // b:<digit>;  digit is either 1 or 0
            return readBoolean(array);
        case "n": // n; null
            return readNull(array);
        default:
            throw new Error("Unknown type: \"" + type + "\" at offset " + array.offset);
    }
}
function read(array) {
    var key = readUntil(array, "|");
    var value = readValue(array);
    var result = {};
    result[key] = value;
    return result;
}
// eslint-disable-next-line @typescript-eslint/no-explicit-any
function unserialize(text) {
    var result = {};
    var array = Array.from(text);
    array.offset = 0;
    do {
        try {
            Object.assign(result, read(array));
        }
        catch (err) {
            err.message +=
                ', Left text: "' + array.slice(array.offset).join("") + '"';
            throw err;
        }
    } while (array.offset < array.length);
    return result;
}
exports.unserialize = unserialize;