node-apk/build/lib/source.js

A library to parse Android application manifest and signature

"use strict";
/*
 * Copyright (c) 2019 XdevL. All rights reserved.
 *
 * This work is licensed under the terms of the MIT license.
 * For a copy, see <https://opensource.org/licenses/MIT>.
 */
Object.defineProperty(exports, "__esModule", { value: true });
var stream_1 = require("stream");
var Source = /** @class */ (function () {
    function Source(buffer) {
        this.cursor = 0;
        this.buffer = buffer;
    }
    Source.prototype.readUByte = function () {
        return this.buffer.readUInt8(this.getCursorAndMove(1));
    };
    Source.prototype.readUShort = function () {
        return this.buffer.readUInt16LE(this.getCursorAndMove(2));
    };
    Source.prototype.readUInt = function () {
        return this.buffer.readUInt32LE(this.getCursorAndMove(4));
    };
    Source.prototype.readInt = function () {
        return this.buffer.readInt32LE(this.getCursorAndMove(4));
    };
    Source.prototype.readUtf8String = function (size) {
        return this.buffer.toString("utf8", this.getCursorAndMove(size), this.cursor);
    };
    Source.prototype.readUtf16String = function (size) {
        return this.buffer.toString("ucs2", this.getCursorAndMove(size), this.cursor);
    };
    Source.prototype.source = function (size) {
        return new Source(this.buffer.slice(this.getCursorAndMove(size), this.cursor));
    };
    Source.prototype.getCursorAndMove = function (offset) {
        this.cursor += offset;
        return this.cursor - offset;
    };
    Source.prototype.moveAt = function (position) {
        this.getCursorAndMove(position - this.cursor);
    };
    Source.prototype.stream = function (size) {
        var readable = new stream_1.Readable();
        readable._read = function () { return undefined; };
        readable.push(this.buffer.slice(this.cursor, this.cursor + size));
        readable.push(null);
        return readable;
    };
    return Source;
}());
exports.default = Source;