// jshint ignore: start
// jscs:disable

modules.define(
    'unzip',
    [],
    function (
        provide
    ) {

    var zip;
    var ERR_BAD_FORMAT = "File format is not recognized.";
    var ERR_ENCRYPTED = "File contains encrypted entry.";
    var ERR_ZIP64 = "File is using Zip64 (4gb+ file size).";
    var ERR_READ = "Error while reading zip file.";
    var ERR_WRITE = "Error while writing zip file.";
    var ERR_WRITE_DATA = "Error while writing file data.";
    var ERR_READ_DATA = "Error while reading file data.";
    var ERR_DUPLICATED_NAME = "File already exists.";
    var CHUNK_SIZE = 512 * 1024;

    var INFLATE_JS = "inflate.js";
    var DEFLATE_JS = "deflate.js";

    var TEXT_PLAIN = "text/plain";

    var MESSAGE_EVENT = "message";

    var appendABViewSupported;
    try {
        appendABViewSupported = new Blob([new DataView(new ArrayBuffer(0))]).size === 0;
    } catch (e) {}

    function Crc32() {
        var crc = -1,
            that = this;
        that.append = function (data) {
            var offset, table = that.table;
            for (offset = 0; offset < data.length; offset++)
            crc = (crc >>> 8) ^ table[(crc ^ data[offset]) & 0xFF];
        };
        that.get = function () {
            return~crc;
        };
    }
    Crc32.prototype.table = (function () {
        var i, j, t, table = [];
        for (i = 0; i < 256; i++) {
            t = i;
            for (j = 0; j < 8; j++)
            if (t & 1) t = (t >>> 1) ^ 0xEDB88320;
            else t = t >>> 1;
            table[i] = t;
        }
        return table;
    })();

    function blobSlice(blob, index, length) {
        if (blob.slice) return blob.slice(index, index + length);
        else if (blob.webkitSlice) return blob.webkitSlice(index, index + length);
        else if (blob.mozSlice) return blob.mozSlice(index, index + length);
        else if (blob.msSlice) return blob.msSlice(index, index + length);
    }

    function getDataHelper(byteLength, bytes) {
        var dataBuffer, dataArray;
        dataBuffer = new ArrayBuffer(byteLength);
        dataArray = new Uint8Array(dataBuffer);
        if (bytes) dataArray.set(bytes, 0);
        return {
            buffer: dataBuffer,
            array: dataArray,
            view: new DataView(dataBuffer)
        };
    }

    // Readers
    function Reader() {}

    function TextReader(text) {
        var that = this,
            blobReader;

        function init(callback, onerror) {
            var blob = new Blob([text], {
                type: TEXT_PLAIN
            });
            blobReader = new BlobReader(blob);
            blobReader.init(function () {
                that.size = blobReader.size;
                callback();
            }, onerror);
        }

        function readUint8Array(index, length, callback, onerror) {
            blobReader.readUint8Array(index, length, callback, onerror);
        }

        that.size = 0;
        that.init = init;
        that.readUint8Array = readUint8Array;
    }
    TextReader.prototype = new Reader();
    TextReader.prototype.constructor = TextReader;

    function Data64URIReader(dataURI) {
        var that = this,
            dataStart;

        function init(callback) {
            var dataEnd = dataURI.length;
            while (dataURI.charAt(dataEnd - 1) == "=")
            dataEnd--;
            dataStart = dataURI.indexOf(",") + 1;
            that.size = Math.floor((dataEnd - dataStart) * 0.75);
            callback();
        }

        function readUint8Array(index, length, callback) {
            var i, data = getDataHelper(length);
            var start = Math.floor(index / 3) * 4;
            var end = Math.ceil((index + length) / 3) * 4;
            var bytes = window.atob(dataURI.substring(start + dataStart, end + dataStart));
            var delta = index - Math.floor(start / 4) * 3;
            for (i = delta; i < delta + length; i++)
            data.array[i - delta] = bytes.charCodeAt(i);
            callback(data.array);
        }

        that.size = 0;
        that.init = init;
        that.readUint8Array = readUint8Array;
    }
    Data64URIReader.prototype = new Reader();
    Data64URIReader.prototype.constructor = Data64URIReader;

    function BlobReader(blob) {
        var that = this;

        function init(callback) {
            this.size = blob.size;
            callback();
        }

        function readUint8Array(index, length, callback, onerror) {
            var reader = new FileReader();
            reader.onload = function (e) {
                callback(new Uint8Array(e.target.result));
            };
            reader.onerror = onerror;
            reader.readAsArrayBuffer(blobSlice(blob, index, length));
        }

        that.size = 0;
        that.init = init;
        that.readUint8Array = readUint8Array;
    }
    BlobReader.prototype = new Reader();
    BlobReader.prototype.constructor = BlobReader;

    // Writers

    function Writer() {}
    Writer.prototype.getData = function (callback) {
        callback(this.data);
    };

    function TextWriter(encoding) {
        var that = this,
            blob;

        function init(callback) {
            blob = new Blob([], {
                type: TEXT_PLAIN
            });
            callback();
        }

        function writeUint8Array(array, callback) {
            blob = new Blob([blob, appendABViewSupported ? array : array.buffer], {
                type: TEXT_PLAIN
            });
            callback();
        }

        function getData(callback, onerror) {
            var reader = new FileReader();
            reader.onload = function (e) {
                callback(e.target.result);
            };
            reader.onerror = onerror;
            reader.readAsText(blob, encoding);
        }

        that.init = init;
        that.writeUint8Array = writeUint8Array;
        that.getData = getData;
    }
    TextWriter.prototype = new Writer();
    TextWriter.prototype.constructor = TextWriter;

    function Data64URIWriter(contentType) {
        var that = this,
            data = "",
            pending = "";

        function init(callback) {
            data += "data:" + (contentType || "") + ";base64,";
            callback();
        }

        function writeUint8Array(array, callback) {
            var i, delta = pending.length,
                dataString = pending;
            pending = "";
            for (i = 0; i < (Math.floor((delta + array.length) / 3) * 3) - delta; i++)
            dataString += String.fromCharCode(array[i]);
            for (; i < array.length; i++)
            pending += String.fromCharCode(array[i]);
            if (dataString.length > 2) data += window.btoa(dataString);
            else pending = dataString;
            callback();
        }

        function getData(callback) {
            callback(data + window.btoa(pending));
        }

        that.init = init;
        that.writeUint8Array = writeUint8Array;
        that.getData = getData;
    }
    Data64URIWriter.prototype = new Writer();
    Data64URIWriter.prototype.constructor = Data64URIWriter;

    function BlobWriter(contentType) {
        var blob, that = this;

        function init(callback) {
            blob = new Blob([], {
                type: contentType
            });
            callback();
        }

        function writeUint8Array(array, callback) {
            blob = new Blob([blob, appendABViewSupported ? array : array.buffer], {
                type: contentType
            });
            callback();
        }

        function getData(callback) {
            callback(blob);
        }

        that.init = init;
        that.writeUint8Array = writeUint8Array;
        that.getData = getData;
    }
    BlobWriter.prototype = new Writer();
    BlobWriter.prototype.constructor = BlobWriter;

    // inflate/deflate core functions

    function launchWorkerProcess(worker, reader, writer, offset, size, onappend, onprogress, onend, onreaderror, onwriteerror) {
        var chunkIndex = 0,
            index, outputSize;

        function onflush() {
            worker.removeEventListener(MESSAGE_EVENT, onmessage, false);
            onend(outputSize);
        }

        function onmessage(event) {
            var message = event.data,
                data = message.data;

            if (message.onappend) {
                outputSize += data.length;
                writer.writeUint8Array(data, function () {
                    onappend(false, data);
                    step();
                }, onwriteerror);
            }
            if (message.onflush) if (data) {
                outputSize += data.length;
                writer.writeUint8Array(data, function () {
                    onappend(false, data);
                    onflush();
                }, onwriteerror);
            } else onflush();
            if (message.progress && onprogress) onprogress(index + message.current, size);
        }

        function step() {
            index = chunkIndex * CHUNK_SIZE;
            if (index < size) reader.readUint8Array(offset + index, Math.min(CHUNK_SIZE, size - index), function (array) {
                worker.postMessage({
                    append: true,
                    data: array
                });
                chunkIndex++;
                if (onprogress) onprogress(index, size);
                onappend(true, array);
            }, onreaderror);
            else worker.postMessage({
                flush: true
            });
        }

        outputSize = 0;
        worker.addEventListener(MESSAGE_EVENT, onmessage, false);
        step();
    }

    function launchProcess(process, reader, writer, offset, size, onappend, onprogress, onend, onreaderror, onwriteerror) {
        var chunkIndex = 0,
            index, outputSize = 0;

        function step() {
            var outputData;
            index = chunkIndex * CHUNK_SIZE;
            if (index < size) reader.readUint8Array(offset + index, Math.min(CHUNK_SIZE, size - index), function (inputData) {
                var outputData = process.append(inputData, function () {
                    if (onprogress) onprogress(offset + index, size);
                });
                outputSize += outputData.length;
                onappend(true, inputData);
                writer.writeUint8Array(outputData, function () {
                    onappend(false, outputData);
                    chunkIndex++;
                    setTimeout(step, 1);
                }, onwriteerror);
                if (onprogress) onprogress(index, size);
            }, onreaderror);
            else {
                outputData = process.flush();
                if (outputData) {
                    outputSize += outputData.length;
                    writer.writeUint8Array(outputData, function () {
                        onappend(false, outputData);
                        onend(outputSize);
                    }, onwriteerror);
                } else onend(outputSize);
            }
        }

        step();
    }

    function inflate(reader, writer, offset, size, computeCrc32, onend, onprogress, onreaderror, onwriteerror) {
        var worker, crc32 = new Crc32();

        function oninflateappend(sending, array) {
            if (computeCrc32 && !sending) crc32.append(array);
        }

        function oninflateend(outputSize) {
            onend(outputSize, crc32.get());
        }

        if (zip.useWebWorkers) {
            worker = new Worker(zip.workerScriptsPath + INFLATE_JS);
            launchWorkerProcess(worker, reader, writer, offset, size, oninflateappend, onprogress, oninflateend, onreaderror, onwriteerror);
        } else launchProcess(new zip.Inflater(), reader, writer, offset, size, oninflateappend, onprogress, oninflateend, onreaderror, onwriteerror);
        return worker;
    }

    function deflate(reader, writer, level, onend, onprogress, onreaderror, onwriteerror) {
        var worker, crc32 = new Crc32();

        function ondeflateappend(sending, array) {
            if (sending) crc32.append(array);
        }

        function ondeflateend(outputSize) {
            onend(outputSize, crc32.get());
        }

        function onmessage() {
            worker.removeEventListener(MESSAGE_EVENT, onmessage, false);
            launchWorkerProcess(worker, reader, writer, 0, reader.size, ondeflateappend, onprogress, ondeflateend, onreaderror, onwriteerror);
        }

        if (zip.useWebWorkers) {
            worker = new Worker(zip.workerScriptsPath + DEFLATE_JS);
            worker.addEventListener(MESSAGE_EVENT, onmessage, false);
            worker.postMessage({
                init: true,
                level: level
            });
        } else launchProcess(new zip.Deflater(), reader, writer, 0, reader.size, ondeflateappend, onprogress, ondeflateend, onreaderror, onwriteerror);
        return worker;
    }

    function copy(reader, writer, offset, size, computeCrc32, onend, onprogress, onreaderror, onwriteerror) {
        var chunkIndex = 0,
            crc32 = new Crc32();

        function step() {
            var index = chunkIndex * CHUNK_SIZE;
            if (index < size) reader.readUint8Array(offset + index, Math.min(CHUNK_SIZE, size - index), function (array) {
                if (computeCrc32) crc32.append(array);
                if (onprogress) onprogress(index, size, array);
                writer.writeUint8Array(array, function () {
                    chunkIndex++;
                    step();
                }, onwriteerror);
            }, onreaderror);
            else onend(size, crc32.get());
        }

        step();
    }

    // ZipReader

    function decodeASCII(str) {
        var i, out = "",
            charCode, extendedASCII = ['Ç', 'ü', 'é', 'â', 'ä', 'à', 'å', 'ç', 'ê', 'ë',
                'è', 'ï', 'î', 'ì', 'Ä', 'Å', 'É', 'æ', 'Æ', 'ô', 'ö', 'ò', 'û', 'ù',
                'ÿ', 'Ö', 'Ü', 'ø', '£', 'Ø', '×', 'ƒ', 'á', 'í', 'ó', 'ú', 'ñ', 'Ñ',
                'ª', 'º', '¿', '®', '¬', '½', '¼', '¡', '«', '»', '_', '_', '_', '¦', '¦',
                'Á', 'Â', 'À', '©', '¦', '¦', '+', '+', '¢', '¥', '+', '+', '-', '-', '+', '-', '+', 'ã',
                'Ã', '+', '+', '-', '-', '¦', '-', '+', '¤', 'ð', 'Ð', 'Ê', 'Ë', 'È', 'i', 'Í', 'Î',
                'Ï', '+', '+', '_', '_', '¦', 'Ì', '_', 'Ó', 'ß', 'Ô', 'Ò', 'õ', 'Õ', 'µ', 'þ',
                'Þ', 'Ú', 'Û', 'Ù', 'ý', 'Ý', '¯', '´', '­', '±', '_', '¾', '¶', '§',
                '÷', '¸', '°', '¨', '·', '¹', '³', '²', '_', ' '];
        for (i = 0; i < str.length; i++) {
            charCode = str.charCodeAt(i) & 0xFF;
            if (charCode > 127) out += extendedASCII[charCode - 128];
            else out += String.fromCharCode(charCode);
        }
        return out;
    }

    function decodeUTF8(string) {
        return decodeURIComponent(escape(string));
    }

    function getString(bytes) {
        var i, str = "";
        for (i = 0; i < bytes.length; i++)
        str += String.fromCharCode(bytes[i]);
        return str;
    }

    function getDate(timeRaw) {
        var date = (timeRaw & 0xffff0000) >> 16,
            time = timeRaw & 0x0000ffff;
        try {
            return new Date(1980 + ((date & 0xFE00) >> 9), ((date & 0x01E0) >> 5) - 1, date & 0x001F, (time & 0xF800) >> 11, (time & 0x07E0) >> 5, (time & 0x001F) * 2, 0);
        } catch (e) {}
    }

    function readCommonHeader(entry, data, index, centralDirectory, onerror) {
        entry.version = data.view.getUint16(index, true);
        entry.bitFlag = data.view.getUint16(index + 2, true);
        entry.compressionMethod = data.view.getUint16(index + 4, true);
        entry.lastModDateRaw = data.view.getUint32(index + 6, true);
        entry.lastModDate = getDate(entry.lastModDateRaw);
        if ((entry.bitFlag & 0x01) === 0x01) {
            onerror(ERR_ENCRYPTED);
            return;
        }
        if (centralDirectory || (entry.bitFlag & 0x0008) != 0x0008) {
            entry.crc32 = data.view.getUint32(index + 10, true);
            entry.compressedSize = data.view.getUint32(index + 14, true);
            entry.uncompressedSize = data.view.getUint32(index + 18, true);
        }
        if (entry.compressedSize === 0xFFFFFFFF || entry.uncompressedSize === 0xFFFFFFFF) {
            onerror(ERR_ZIP64);
            return;
        }
        entry.filenameLength = data.view.getUint16(index + 22, true);
        entry.extraFieldLength = data.view.getUint16(index + 24, true);
    }

    function createZipReader(reader, onerror) {
        function Entry() {}

        Entry.prototype.getData = function (writer, onend, onprogress, checkCrc32) {
            var that = this,
                worker;

            function terminate(callback, param) {
                if (worker) worker.terminate();
                worker = null;
                if (callback) callback(param);
            }

            function testCrc32(crc32) {
                var dataCrc32 = getDataHelper(4);
                dataCrc32.view.setUint32(0, crc32);
                return that.crc32 == dataCrc32.view.getUint32(0);
            }

            function getWriterData(uncompressedSize, crc32) {
                if (checkCrc32 && !testCrc32(crc32)) onreaderror();
                else writer.getData(function (data) {
                    terminate(onend, data);
                });
            }

            function onreaderror() {
                terminate(onerror, ERR_READ_DATA);
            }

            function onwriteerror() {
                terminate(onerror, ERR_WRITE_DATA);
            }

            reader.readUint8Array(that.offset, 30, function (bytes) {
                var data = getDataHelper(bytes.length, bytes),
                    dataOffset;
                if (data.view.getUint32(0) != 0x504b0304) {
                    onerror(ERR_BAD_FORMAT);
                    return;
                }
                readCommonHeader(that, data, 4, false, onerror);
                dataOffset = that.offset + 30 + that.filenameLength + that.extraFieldLength;
                writer.init(function () {
                    if (that.compressionMethod === 0) copy(reader, writer, dataOffset, that.compressedSize, checkCrc32, getWriterData, onprogress, onreaderror, onwriteerror);
                    else worker = inflate(reader, writer, dataOffset, that.compressedSize, checkCrc32, getWriterData, onprogress, onreaderror, onwriteerror);
                }, onwriteerror);
            }, onreaderror);
        };

        function seekEOCDR(offset, entriesCallback) {
            reader.readUint8Array(reader.size - offset, offset, function (bytes) {
                var dataView = getDataHelper(bytes.length, bytes).view;
                if (dataView.getUint32(0) != 0x504b0506) {
                    seekEOCDR(offset + 1, entriesCallback);
                } else {
                    entriesCallback(dataView);
                }
            }, function () {
                onerror(ERR_READ);
            });
        }

        return {
            getEntries: function (callback) {
                if (reader.size < 22) {
                    onerror(ERR_BAD_FORMAT);
                    return;
                }
                // look for End of central directory record
                seekEOCDR(22, function (dataView) {
                    var datalength, fileslength;
                    datalength = dataView.getUint32(16, true);
                    fileslength = dataView.getUint16(8, true);
                    reader.readUint8Array(datalength, reader.size - datalength, function (bytes) {
                        var i, index = 0,
                            entries = [],
                            entry, filename, comment, data = getDataHelper(bytes.length, bytes);
                        for (i = 0; i < fileslength; i++) {
                            entry = new Entry();
                            if (data.view.getUint32(index) != 0x504b0102) {
                                onerror(ERR_BAD_FORMAT);
                                return;
                            }
                            readCommonHeader(entry, data, index + 6, true, onerror);
                            entry.commentLength = data.view.getUint16(index + 32, true);
                            entry.directory = ((data.view.getUint8(index + 38) & 0x10) == 0x10);
                            entry.offset = data.view.getUint32(index + 42, true);
                            filename = getString(data.array.subarray(index + 46, index + 46 + entry.filenameLength));
                            entry.filename = ((entry.bitFlag & 0x0800) === 0x0800) ? decodeUTF8(filename) : decodeASCII(filename);
                            if (!entry.directory && entry.filename.charAt(entry.filename.length - 1) == "/") entry.directory = true;
                            comment = getString(data.array.subarray(index + 46 + entry.filenameLength + entry.extraFieldLength, index + 46 + entry.filenameLength + entry.extraFieldLength + entry.commentLength));
                            entry.comment = ((entry.bitFlag & 0x0800) === 0x0800) ? decodeUTF8(comment) : decodeASCII(comment);
                            entries.push(entry);
                            index += 46 + entry.filenameLength + entry.extraFieldLength + entry.commentLength;
                        }
                        callback(entries);
                    }, function () {
                        onerror(ERR_READ);
                    });
                });
            },
            close: function (callback) {
                if (callback) callback();
            }
        };
    }

    // ZipWriter

    function encodeUTF8(string) {
        return unescape(encodeURIComponent(string));
    }

    function getBytes(str) {
        var i, array = [];
        for (i = 0; i < str.length; i++)
        array.push(str.charCodeAt(i));
        return array;
    }

    function createZipWriter(writer, onerror, dontDeflate) {
        var worker, files = {}, filenames = [],
            datalength = 0;

        function terminate(callback, message) {
            if (worker) worker.terminate();
            worker = null;
            if (callback) callback(message);
        }

        function onwriteerror() {
            terminate(onerror, ERR_WRITE);
        }

        function onreaderror() {
            terminate(onerror, ERR_READ_DATA);
        }

        return {
            add: function (name, reader, onend, onprogress, options) {
                var header, filename, date;

                function writeHeader(callback) {
                    var data;
                    date = options.lastModDate || new Date();
                    header = getDataHelper(26);
                    files[name] = {
                        headerArray: header.array,
                        directory: options.directory,
                        filename: filename,
                        offset: datalength,
                        comment: getBytes(encodeUTF8(options.comment || ""))
                    };
                    header.view.setUint32(0, 0x14000808);
                    if (options.version) header.view.setUint8(0, options.version);
                    if (!dontDeflate && options.level !== 0 && !options.directory) header.view.setUint16(4, 0x0800);
                    header.view.setUint16(6, (((date.getHours() << 6) | date.getMinutes()) << 5) | date.getSeconds() / 2, true);
                    header.view.setUint16(8, ((((date.getFullYear() - 1980) << 4) | (date.getMonth() + 1)) << 5) | date.getDate(), true);
                    header.view.setUint16(22, filename.length, true);
                    data = getDataHelper(30 + filename.length);
                    data.view.setUint32(0, 0x504b0304);
                    data.array.set(header.array, 4);
                    data.array.set(filename, 30);
                    datalength += data.array.length;
                    writer.writeUint8Array(data.array, callback, onwriteerror);
                }

                function writeFooter(compressedLength, crc32) {
                    var footer = getDataHelper(16);
                    datalength += compressedLength || 0;
                    footer.view.setUint32(0, 0x504b0708);
                    if (typeof crc32 != "undefined") {
                        header.view.setUint32(10, crc32, true);
                        footer.view.setUint32(4, crc32, true);
                    }
                    if (reader) {
                        footer.view.setUint32(8, compressedLength, true);
                        header.view.setUint32(14, compressedLength, true);
                        footer.view.setUint32(12, reader.size, true);
                        header.view.setUint32(18, reader.size, true);
                    }
                    writer.writeUint8Array(footer.array, function () {
                        datalength += 16;
                        terminate(onend);
                    }, onwriteerror);
                }

                function writeFile() {
                    options = options || {};
                    name = name.trim();
                    if (options.directory && name.charAt(name.length - 1) != "/") name += "/";
                    if (files.hasOwnProperty(name)) {
                        onerror(ERR_DUPLICATED_NAME);
                        return;
                    }
                    filename = getBytes(encodeUTF8(name));
                    filenames.push(name);
                    writeHeader(function () {
                        if (reader) if (dontDeflate || options.level === 0) copy(reader, writer, 0, reader.size, true, writeFooter, onprogress, onreaderror, onwriteerror);
                        else worker = deflate(reader, writer, options.level, writeFooter, onprogress, onreaderror, onwriteerror);
                        else writeFooter();
                    }, onwriteerror);
                }

                if (reader) reader.init(writeFile, onreaderror);
                else writeFile();
            },
            close: function (callback) {
                var data, length = 0,
                    index = 0,
                    indexFilename, file;
                for (indexFilename = 0; indexFilename < filenames.length; indexFilename++) {
                    file = files[filenames[indexFilename]];
                    length += 46 + file.filename.length + file.comment.length;
                }
                data = getDataHelper(length + 22);
                for (indexFilename = 0; indexFilename < filenames.length; indexFilename++) {
                    file = files[filenames[indexFilename]];
                    data.view.setUint32(index, 0x504b0102);
                    data.view.setUint16(index + 4, 0x1400);
                    data.array.set(file.headerArray, index + 6);
                    data.view.setUint16(index + 32, file.comment.length, true);
                    if (file.directory) data.view.setUint8(index + 38, 0x10);
                    data.view.setUint32(index + 42, file.offset, true);
                    data.array.set(file.filename, index + 46);
                    data.array.set(file.comment, index + 46 + file.filename.length);
                    index += 46 + file.filename.length + file.comment.length;
                }
                data.view.setUint32(index, 0x504b0506);
                data.view.setUint16(index + 8, filenames.length, true);
                data.view.setUint16(index + 10, filenames.length, true);
                data.view.setUint32(index + 12, length, true);
                data.view.setUint32(index + 16, datalength, true);
                writer.writeUint8Array(data.array, function () {
                    terminate(function () {
                        writer.getData(callback);
                    });
                }, onwriteerror);
            }
        };
    }

    zip = {
        Reader: Reader,
        Writer: Writer,
        BlobReader: BlobReader,
        Data64URIReader: Data64URIReader,
        TextReader: TextReader,
        BlobWriter: BlobWriter,
        Data64URIWriter: Data64URIWriter,
        TextWriter: TextWriter,
        createReader: function (reader, callback, onerror) {
            reader.init(function () {
                callback(createZipReader(reader, onerror));
            }, onerror);
        },
        createWriter: function (writer, callback, onerror, dontDeflate) {
            writer.init(function () {
                callback(createZipWriter(writer, onerror, dontDeflate));
            }, onerror);
        },
        workerScriptsPath: "",
        useWebWorkers: true
    };
    /*
     Copyright (c) 2013 Gildas Lormeau. All rights reserved.

     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions are met:

     1. Redistributions of source code must retain the above copyright notice,
     this list of conditions and the following disclaimer.

     2. Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in
     the documentation and/or other materials provided with the distribution.

     3. The names of the authors may not be used to endorse or promote products
     derived from this software without specific prior written permission.

     THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
     FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
     INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
     OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     */

    (function () {

        var ERR_HTTP_RANGE = "HTTP Range not supported.";

        var Reader = zip.Reader;
        var Writer = zip.Writer;

        var ZipDirectoryEntry;

        var appendABViewSupported;
        try {
            appendABViewSupported = new Blob([new DataView(new ArrayBuffer(0))]).size === 0;
        } catch (e) {}

        function HttpReader(url) {
            var that = this;

            function getData(callback, onerror) {
                var request;
                if (!that.data) {
                    request = new XMLHttpRequest();
                    request.addEventListener("load", function (data) {
                        // При 500-ка не срабатывает error - триггерим руками
                        if (data.target.status >= 500) {
                            onerror();
                            return;
                        }

                        if (!that.size) that.size = Number(request.getResponseHeader("Content-Length"));
                        that.data = new Uint8Array(request.response);
                        callback();
                    }, false);
                    request.addEventListener("error", onerror, false);
                    request.open("GET", url);
                    request.responseType = "arraybuffer";
                    request.send();
                } else callback();
            }

            function init(callback, onerror) {
                var request = new XMLHttpRequest();
                request.addEventListener("load", function (data) {
                    // При 500-ка не срабатывает error - триггерим руками
                    if (data.target.status >= 500) {
                        onerror();
                        return;
                    }

                    that.size = Number(request.getResponseHeader("Content-Length"));
                    callback();
                }, false);
                request.addEventListener("error", onerror, false);
                request.open("HEAD", url);
                request.send();
            }

            function readUint8Array(index, length, callback, onerror) {
                getData(function () {
                    callback(new Uint8Array(that.data.subarray(index, index + length)));
                }, onerror);
            }

            that.size = 0;
            that.init = init;
            that.readUint8Array = readUint8Array;
        }
        HttpReader.prototype = new Reader();
        HttpReader.prototype.constructor = HttpReader;

        function HttpRangeReader(url) {
            var that = this;

            function init(callback, onerror) {
                var request = new XMLHttpRequest();
                request.addEventListener("load", function () {
                    that.size = Number(request.getResponseHeader("Content-Length"));
                    if (request.getResponseHeader("Accept-Ranges") == "bytes") callback();
                    else onerror(ERR_HTTP_RANGE);
                }, false);
                request.addEventListener("error", onerror, false);
                request.open("HEAD", url);
                request.send();
            }

            function readArrayBuffer(index, length, callback, onerror) {
                var request = new XMLHttpRequest();
                request.open("GET", url);
                request.responseType = "arraybuffer";
                request.setRequestHeader("Range", "bytes=" + index + "-" + (index + length - 1));
                request.addEventListener("load", function () {
                    callback(request.response);
                }, false);
                request.addEventListener("error", onerror, false);
                request.send();
            }

            function readUint8Array(index, length, callback, onerror) {
                readArrayBuffer(index, length, function (arraybuffer) {
                    callback(new Uint8Array(arraybuffer));
                }, onerror);
            }

            that.size = 0;
            that.init = init;
            that.readUint8Array = readUint8Array;
        }
        HttpRangeReader.prototype = new Reader();
        HttpRangeReader.prototype.constructor = HttpRangeReader;

        function ArrayBufferReader(arrayBuffer) {
            var that = this;

            function init(callback, onerror) {
                that.size = arrayBuffer.byteLength;
                callback();
            }

            function readUint8Array(index, length, callback, onerror) {
                callback(new Uint8Array(arrayBuffer.slice(index, index + length)));
            }

            that.size = 0;
            that.init = init;
            that.readUint8Array = readUint8Array;
        }
        ArrayBufferReader.prototype = new Reader();
        ArrayBufferReader.prototype.constructor = ArrayBufferReader;

        function ArrayBufferWriter() {
            var array, that = this;

            function init(callback, onerror) {
                array = new Uint8Array();
                callback();
            }

            function writeUint8Array(arr, callback, onerror) {
                var tmpArray = new Uint8Array(array.length + arr.length);
                tmpArray.set(array);
                tmpArray.set(arr, array.length);
                array = tmpArray;
                callback();
            }

            function getData(callback) {
                callback(array.buffer);
            }

            that.init = init;
            that.writeUint8Array = writeUint8Array;
            that.getData = getData;
        }
        ArrayBufferWriter.prototype = new Writer();
        ArrayBufferWriter.prototype.constructor = ArrayBufferWriter;

        function FileWriter(fileEntry, contentType) {
            var writer, that = this;

            function init(callback, onerror) {
                fileEntry.createWriter(function (fileWriter) {
                    writer = fileWriter;
                    callback();
                }, onerror);
            }

            function writeUint8Array(array, callback, onerror) {
                var blob = new Blob([appendABViewSupported ? array : array.buffer], {
                    type: contentType
                });
                writer.onwrite = function () {
                    writer.onwrite = null;
                    callback();
                };
                writer.onerror = onerror;
                writer.write(blob);
            }

            function getData(callback) {
                fileEntry.file(callback);
            }

            that.init = init;
            that.writeUint8Array = writeUint8Array;
            that.getData = getData;
        }
        FileWriter.prototype = new Writer();
        FileWriter.prototype.constructor = FileWriter;

        zip.FileWriter = FileWriter;
        zip.HttpReader = HttpReader;
        zip.HttpRangeReader = HttpRangeReader;
        zip.ArrayBufferReader = ArrayBufferReader;
        zip.ArrayBufferWriter = ArrayBufferWriter;

        if (zip.fs) {
            ZipDirectoryEntry = zip.fs.ZipDirectoryEntry;
            ZipDirectoryEntry.prototype.addHttpContent = function (name, URL, useRangeHeader) {
                function addChild(parent, name, params, directory) {
                    if (parent.directory) return directory ? new ZipDirectoryEntry(parent.fs, name, params, parent) : new zip.fs.ZipFileEntry(parent.fs, name, params, parent);
                    else throw "Parent entry is not a directory.";
                }

                return addChild(this, name, {
                    data: URL,
                    Reader: useRangeHeader ? HttpRangeReader : HttpReader
                });
            };
            ZipDirectoryEntry.prototype.importHttpContent = function (URL, useRangeHeader, onend, onerror) {
                this.importZip(useRangeHeader ? new HttpRangeReader(URL) : new HttpReader(URL), onend, onerror);
            };
            zip.fs.FS.prototype.importHttpContent = function (URL, useRangeHeader, onend, onerror) {
                this.entries = [];
                this.root = new ZipDirectoryEntry(this);
                this.root.importHttpContent(URL, useRangeHeader, onend, onerror);
            };
        }

    })();

    provide(zip);
});
