Quellcode-Bibliothek

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Datei: zTracer.inline.hpp Sprache: C

Original von: Isabelle^©

/*!

JSZip v3.1.5 - A JavaScript class for generating and reading zip files
<http://stuartk.com/jszip>

(c) 2009-2016 Stuart Knightley <stuart [at] stuartk.com>
Dual licenced under the MIT license or GPLv3. See https://raw.github.com/Stuk/jszip/master/LICENSE.markdown.

JSZip uses the library pako released under the MIT license :
https://github.com/nodeca/pako/blob/master/LICENSE
*/

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.JSZip = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
'use strict';
var utils = require('./utils');
var support = require('./support');
// private property
var _keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";

// public method for encoding
exports.encode = function(input) {
    var output = [];
    var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
    var i = 0, len = input.length, remainingBytes = len;

    var isArray = utils.getTypeOf(input) !== "string";
    while (i < input.length) {
        remainingBytes = len - i;

        if (!isArray) {
            chr1 = input.charCodeAt(i++);
            chr2 = i < len ? input.charCodeAt(i++) : 0;
            chr3 = i < len ? input.charCodeAt(i++) : 0;
        } else {
            chr1 = input[i++];
            chr2 = i < len ? input[i++] : 0;
            chr3 = i < len ? input[i++] : 0;
        }

        enc1 = chr1 >> 2;
        enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
        enc3 = remainingBytes > 1 ? (((chr2 & 15) << 2) | (chr3 >> 6)) : 64;
        enc4 = remainingBytes > 2 ? (chr3 & 63) : 64;

        output.push(_keyStr.charAt(enc1) + _keyStr.charAt(enc2) + _keyStr.charAt(enc3) + _keyStr.charAt(enc4));

    }

    return output.join("");
};

// public method for decoding
exports.decode = function(input) {
    var chr1, chr2, chr3;
    var enc1, enc2, enc3, enc4;
    var i = 0, resultIndex = 0;

    var dataUrlPrefix = "data:";

    if (input.substr(0, dataUrlPrefix.length) === dataUrlPrefix) {
        // This is a common error: people give a data url
        // (data:image/png;base64,iVBOR...) with a {base64: true} and
        // wonders why things don't work.
        // We can detect that the string input looks like a data url but we
        // *can't* be sure it is one: removing everything up to the comma would
        // be too dangerous.
        throw new Error("Invalid base64 input, it looks like a data url.");
    }

    input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

    var totalLength = input.length * 3 / 4;
    if(input.charAt(input.length - 1) === _keyStr.charAt(64)) {
        totalLength--;
    }
    if(input.charAt(input.length - 2) === _keyStr.charAt(64)) {
        totalLength--;
    }
    if (totalLength % 1 !== 0) {
        // totalLength is not an integer, the length does not match a valid
        // base64 content. That can happen if:
        // - the input is not a base64 content
        // - the input is *almost* a base64 content, with a extra chars at the
        //   beginning or at the end
        // - the input uses a base64 variant (base64url for example)
        throw new Error("Invalid base64 input, bad content length.");
    }
    var output;
    if (support.uint8array) {
        output = new Uint8Array(totalLength|0);
    } else {
        output = new Array(totalLength|0);
    }

    while (i < input.length) {

        enc1 = _keyStr.indexOf(input.charAt(i++));
        enc2 = _keyStr.indexOf(input.charAt(i++));
        enc3 = _keyStr.indexOf(input.charAt(i++));
        enc4 = _keyStr.indexOf(input.charAt(i++));

        chr1 = (enc1 << 2) | (enc2 >> 4);
        chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
        chr3 = ((enc3 & 3) << 6) | enc4;

        output[resultIndex++] = chr1;

        if (enc3 !== 64) {
            output[resultIndex++] = chr2;
        }
        if (enc4 !== 64) {
            output[resultIndex++] = chr3;
        }

    }

    return output;
};

},{"./support":30,"./utils":32}],2:[function(require,module,exports){
'use strict';

var external = require("./external");
var DataWorker = require('./stream/DataWorker');
var DataLengthProbe = require('./stream/DataLengthProbe');
var Crc32Probe = require('./stream/Crc32Probe');
var DataLengthProbe = require('./stream/DataLengthProbe');

/**
* Represent a compressed object, with everything needed to decompress it.
* @constructor
* @param {number} compressedSize the size of the data compressed.
* @param {number} uncompressedSize the size of the data after decompression.
* @param {number} crc32 the crc32 of the decompressed file.
* @param {object} compression the type of compression, see lib/compressions.js.
* @param {String|ArrayBuffer|Uint8Array|Buffer} data the compressed data.
*/
function CompressedObject(compressedSize, uncompressedSize, crc32, compression, data) {
    this.compressedSize = compressedSize;
    this.uncompressedSize = uncompressedSize;
    this.crc32 = crc32;
    this.compression = compression;
    this.compressedContent = data;
}

CompressedObject.prototype = {
    /**
     * Create a worker to get the uncompressed content.
     * @return {GenericWorker} the worker.
     */
    getContentWorker : function () {
        var worker = new DataWorker(external.Promise.resolve(this.compressedContent))
        .pipe(this.compression.uncompressWorker())
        .pipe(new DataLengthProbe("data_length"));

        var that = this;
        worker.on("end", function () {
            if(this.streamInfo['data_length'] !== that.uncompressedSize) {
                throw new Error("Bug : uncompressed data size mismatch");
            }
        });
        return worker;
    },
    /**
     * Create a worker to get the compressed content.
     * @return {GenericWorker} the worker.
     */
    getCompressedWorker : function () {
        return new DataWorker(external.Promise.resolve(this.compressedContent))
        .withStreamInfo("compressedSize", this.compressedSize)
        .withStreamInfo("uncompressedSize", this.uncompressedSize)
        .withStreamInfo("crc32", this.crc32)
        .withStreamInfo("compression", this.compression)
        ;
    }
};

/**
* Chain the given worker with other workers to compress the content with the
* given compresion.
* @param {GenericWorker} uncompressedWorker the worker to pipe.
* @param {Object} compression the compression object.
* @param {Object} compressionOptions the options to use when compressing.
* @return {GenericWorker} the new worker compressing the content.
*/
CompressedObject.createWorkerFrom = function (uncompressedWorker, compression, compressionOptions) {
    return uncompressedWorker
    .pipe(new Crc32Probe())
    .pipe(new DataLengthProbe("uncompressedSize"))
    .pipe(compression.compressWorker(compressionOptions))
    .pipe(new DataLengthProbe("compressedSize"))
    .withStreamInfo("compression", compression);
};

module.exports = CompressedObject;

},{"./external":6,"./stream/Crc32Probe":25,"./stream/DataLengthProbe":26,"./stream/DataWorker":27}],3:[function(require,module,exports){
'use strict';

var GenericWorker = require("./stream/GenericWorker");

exports.STORE = {
    magic: "\x00\x00",
    compressWorker : function (compressionOptions) {
        return new GenericWorker("STORE compression");
    },
    uncompressWorker : function () {
        return new GenericWorker("STORE decompression");
    }
};
exports.DEFLATE = require('./flate');

},{"./flate":7,"./stream/GenericWorker":28}],4:[function(require,module,exports){
'use strict';

var utils = require('./utils');

/**
* The following functions come from pako, from pako/lib/zlib/crc32.js
* released under the MIT license, see pako https://github.com/nodeca/pako/
*/

// Use ordinary array, since untyped makes no boost here
function makeTable() {
    var c, table = [];

    for(var n =0; n < 256; n++){
        c = n;
        for(var k =0; k < 8; k++){
            c = ((c&1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
        }
        table[n] = c;
    }

    return table;
}

// Create table on load. Just 255 signed longs. Not a problem.
var crcTable = makeTable();

function crc32(crc, buf, len, pos) {
    var t = crcTable, end = pos + len;

    crc = crc ^ (-1);

    for (var i = pos; i < end; i++ ) {
        crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
    }

    return (crc ^ (-1)); // >>> 0;
}

// That's all for the pako functions.

/**
* Compute the crc32 of a string.
* This is almost the same as the function crc32, but for strings. Using the
* same function for the two use cases leads to horrible performances.
* @param {Number} crc the starting value of the crc.
* @param {String} str the string to use.
* @param {Number} len the length of the string.
* @param {Number} pos the starting position for the crc32 computation.
* @return {Number} the computed crc32.
*/
function crc32str(crc, str, len, pos) {
    var t = crcTable, end = pos + len;

    crc = crc ^ (-1);

    for (var i = pos; i < end; i++ ) {
        crc = (crc >>> 8) ^ t[(crc ^ str.charCodeAt(i)) & 0xFF];
    }

    return (crc ^ (-1)); // >>> 0;
}

module.exports = function crc32wrapper(input, crc) {
    if (typeof input === "undefined" || !input.length) {
        return 0;
    }

    var isArray = utils.getTypeOf(input) !== "string";

    if(isArray) {
        return crc32(crc|0, input, input.length, 0);
    } else {
        return crc32str(crc|0, input, input.length, 0);
    }
};

},{"./utils":32}],5:[function(require,module,exports){
'use strict';
exports.base64 = false;
exports.binary = false;
exports.dir = false;
exports.createFolders = true;
exports.date = null;
exports.compression = null;
exports.compressionOptions = null;
exports.comment = null;
exports.unixPermissions = null;
exports.dosPermissions = null;

},{}],6:[function(require,module,exports){
/* global Promise */
'use strict';

// load the global object first:
// - it should be better integrated in the system (unhandledRejection in node)
// - the environment may have a custom Promise implementation (see zone.js)
var ES6Promise = null;
if (typeof Promise !== "undefined") {
    ES6Promise = Promise;
} else {
    ES6Promise = require("lie");
}

/**
* Let the user use/change some implementations.
*/
module.exports = {
    Promise: ES6Promise
};

},{"lie":58}],7:[function(require,module,exports){
'use strict';
var USE_TYPEDARRAY = (typeof Uint8Array !== 'undefined') && (typeof Uint16Array !== 'undefined') && (typeof Uint32Array !== 'undefined');

var pako = require("pako");
var utils = require("./utils");
var GenericWorker = require("./stream/GenericWorker");

var ARRAY_TYPE = USE_TYPEDARRAY ? "uint8array" : "array";

exports.magic = "\x08\x00";

/**
* Create a worker that uses pako to inflate/deflate.
* @constructor
* @param {String} action the name of the pako function to call : either "Deflate" or "Inflate".
* @param {Object} options the options to use when (de)compressing.
*/
function FlateWorker(action, options) {
    GenericWorker.call(this, "FlateWorker/" + action);

    this._pako = null;
    this._pakoAction = action;
    this._pakoOptions = options;
    // the `meta` object from the last chunk received
    // this allow this worker to pass around metadata
    this.meta = {};
}

utils.inherits(FlateWorker, GenericWorker);

/**
* @see GenericWorker.processChunk
*/
FlateWorker.prototype.processChunk = function (chunk) {
    this.meta = chunk.meta;
    if (this._pako === null) {
        this._createPako();
    }
    this._pako.push(utils.transformTo(ARRAY_TYPE, chunk.data), false);
};

/**
* @see GenericWorker.flush
*/
FlateWorker.prototype.flush = function () {
    GenericWorker.prototype.flush.call(this);
    if (this._pako === null) {
        this._createPako();
    }
    this._pako.push([], true);
};
/**
* @see GenericWorker.cleanUp
*/
FlateWorker.prototype.cleanUp = function () {
    GenericWorker.prototype.cleanUp.call(this);
    this._pako = null;
};

/**
* Create the _pako object.
* TODO: lazy-loading this object isn't the best solution but it's the
* quickest. The best solution is to lazy-load the worker list. See also the
* issue #446.
*/
FlateWorker.prototype._createPako = function () {
    this._pako = new pako[this._pakoAction]({
        raw: true,
        level: this._pakoOptions.level || -1 // default compression
    });
    var self = this;
    this._pako.onData = function(data) {
        self.push({
            data : data,
            meta : self.meta
        });
    };
};

exports.compressWorker = function (compressionOptions) {
    return new FlateWorker("Deflate", compressionOptions);
};
exports.uncompressWorker = function () {
    return new FlateWorker("Inflate", {});
};

},{"./stream/GenericWorker":28,"./utils":32,"pako":59}],8:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var GenericWorker = require('../stream/GenericWorker');
var utf8 = require('../utf8');
var crc32 = require('../crc32');
var signature = require('../signature');

/**
* Transform an integer into a string in hexadecimal.
* @private
* @param {number} dec the number to convert.
* @param {number} bytes the number of bytes to generate.
* @returns {string} the result.
*/
var decToHex = function(dec, bytes) {
    var hex = "", i;
    for (i = 0; i < bytes; i++) {
        hex += String.fromCharCode(dec & 0xff);
        dec = dec >>> 8;
    }
    return hex;
};

/**
* Generate the UNIX part of the external file attributes.
* @param {Object} unixPermissions the unix permissions or null.
* @param {Boolean} isDir true if the entry is a directory, false otherwise.
* @return {Number} a 32 bit integer.
*
* adapted from http://unix.stackexchange.com/questions/14705/the-zip-formats-external-file-attribute :
*
* TTTTsstrwxrwxrwx0000000000ADVSHR
* ^^^^____________________________ file type, see zipinfo.c (UNX_*)
*     ^^^_________________________ setuid, setgid, sticky
*        ^^^^^^^^^________________ permissions
*                 ^^^^^^^^^^______ not used ?
*                           ^^^^^^ DOS attribute bits : Archive, Directory, Volume label, System file, Hidden, Read only
*/
var generateUnixExternalFileAttr = function (unixPermissions, isDir) {

    var result = unixPermissions;
    if (!unixPermissions) {
        // I can't use octal values in strict mode, hence the hexa.
        //  040775 => 0x41fd
        // 0100664 => 0x81b4
        result = isDir ? 0x41fd : 0x81b4;
    }
    return (result & 0xFFFF) << 16;
};

/**
* Generate the DOS part of the external file attributes.
* @param {Object} dosPermissions the dos permissions or null.
* @param {Boolean} isDir true if the entry is a directory, false otherwise.
* @return {Number} a 32 bit integer.
*
* Bit 0     Read-Only
* Bit 1     Hidden
* Bit 2     System
* Bit 3     Volume Label
* Bit 4     Directory
* Bit 5     Archive
*/
var generateDosExternalFileAttr = function (dosPermissions, isDir) {

    // the dir flag is already set for compatibility
    return (dosPermissions || 0)  & 0x3F;
};

/**
* Generate the various parts used in the construction of the final zip file.
* @param {Object} streamInfo the hash with informations about the compressed file.
* @param {Boolean} streamedContent is the content streamed ?
* @param {Boolean} streamingEnded is the stream finished ?
* @param {number} offset the current offset from the start of the zip file.
* @param {String} platform let's pretend we are this platform (change platform dependents fields)
* @param {Function} encodeFileName the function to encode the file name / comment.
* @return {Object} the zip parts.
*/
var generateZipParts = function(streamInfo, streamedContent, streamingEnded, offset, platform, encodeFileName) {
    var file = streamInfo['file'],
    compression = streamInfo['compression'],
    useCustomEncoding = encodeFileName !== utf8.utf8encode,
    encodedFileName = utils.transformTo("string", encodeFileName(file.name)),
    utfEncodedFileName = utils.transformTo("string", utf8.utf8encode(file.name)),
    comment = file.comment,
    encodedComment = utils.transformTo("string", encodeFileName(comment)),
    utfEncodedComment = utils.transformTo("string", utf8.utf8encode(comment)),
    useUTF8ForFileName = utfEncodedFileName.length !== file.name.length,
    useUTF8ForComment = utfEncodedComment.length !== comment.length,
    dosTime,
    dosDate,
    extraFields = "",
    unicodePathExtraField = "",
    unicodeCommentExtraField = "",
    dir = file.dir,
    date = file.date;

    var dataInfo = {
        crc32 : 0,
        compressedSize : 0,
        uncompressedSize : 0
    };

    // if the content is streamed, the sizes/crc32 are only available AFTER
    // the end of the stream.
    if (!streamedContent || streamingEnded) {
        dataInfo.crc32 = streamInfo['crc32'];
        dataInfo.compressedSize = streamInfo['compressedSize'];
        dataInfo.uncompressedSize = streamInfo['uncompressedSize'];
    }

    var bitflag = 0;
    if (streamedContent) {
        // Bit 3: the sizes/crc32 are set to zero in the local header.
        // The correct values are put in the data descriptor immediately
        // following the compressed data.
        bitflag |= 0x0008;
    }
    if (!useCustomEncoding && (useUTF8ForFileName || useUTF8ForComment)) {
        // Bit 11: Language encoding flag (EFS).
        bitflag |= 0x0800;
    }

    var extFileAttr = 0;
    var versionMadeBy = 0;
    if (dir) {
        // dos or unix, we set the dos dir flag
        extFileAttr |= 0x00010;
    }
    if(platform === "UNIX") {
        versionMadeBy = 0x031E; // UNIX, version 3.0
        extFileAttr |= generateUnixExternalFileAttr(file.unixPermissions, dir);
    } else { // DOS or other, fallback to DOS
        versionMadeBy = 0x0014; // DOS, version 2.0
        extFileAttr |= generateDosExternalFileAttr(file.dosPermissions, dir);
    }

    // date
    // @see http://www.delorie.com/djgpp/doc/rbinter/it/52/13.html
    // @see http://www.delorie.com/djgpp/doc/rbinter/it/65/16.html
    // @see http://www.delorie.com/djgpp/doc/rbinter/it/66/16.html

    dosTime = date.getUTCHours();
    dosTime = dosTime << 6;
    dosTime = dosTime | date.getUTCMinutes();
    dosTime = dosTime << 5;
    dosTime = dosTime | date.getUTCSeconds() / 2;

    dosDate = date.getUTCFullYear() - 1980;
    dosDate = dosDate << 4;
    dosDate = dosDate | (date.getUTCMonth() + 1);
    dosDate = dosDate << 5;
    dosDate = dosDate | date.getUTCDate();

    if (useUTF8ForFileName) {
        // set the unicode path extra field. unzip needs at least one extra
        // field to correctly handle unicode path, so using the path is as good
        // as any other information. This could improve the situation with
        // other archive managers too.
        // This field is usually used without the utf8 flag, with a non
        // unicode path in the header (winrar, winzip). This helps (a bit)
        // with the messy Windows' default compressed folders feature but
        // breaks on p7zip which doesn't seek the unicode path extra field.
        // So for now, UTF-8 everywhere !
        unicodePathExtraField =
            // Version
            decToHex(1, 1) +
            // NameCRC32
            decToHex(crc32(encodedFileName), 4) +
            // UnicodeName
            utfEncodedFileName;

        extraFields +=
            // Info-ZIP Unicode Path Extra Field
            "\x75\x70" +
            // size
            decToHex(unicodePathExtraField.length, 2) +
            // content
            unicodePathExtraField;
    }

    if(useUTF8ForComment) {

        unicodeCommentExtraField =
            // Version
            decToHex(1, 1) +
            // CommentCRC32
            decToHex(crc32(encodedComment), 4) +
            // UnicodeName
            utfEncodedComment;

        extraFields +=
            // Info-ZIP Unicode Path Extra Field
            "\x75\x63" +
            // size
            decToHex(unicodeCommentExtraField.length, 2) +
            // content
            unicodeCommentExtraField;
    }

    var header = "";

    // version needed to extract
    header += "\x0A\x00";
    // general purpose bit flag
    header += decToHex(bitflag, 2);
    // compression method
    header += compression.magic;
    // last mod file time
    header += decToHex(dosTime, 2);
    // last mod file date
    header += decToHex(dosDate, 2);
    // crc-32
    header += decToHex(dataInfo.crc32, 4);
    // compressed size
    header += decToHex(dataInfo.compressedSize, 4);
    // uncompressed size
    header += decToHex(dataInfo.uncompressedSize, 4);
    // file name length
    header += decToHex(encodedFileName.length, 2);
    // extra field length
    header += decToHex(extraFields.length, 2);

    var fileRecord = signature.LOCAL_FILE_HEADER + header + encodedFileName + extraFields;

    var dirRecord = signature.CENTRAL_FILE_HEADER +
        // version made by (00: DOS)
        decToHex(versionMadeBy, 2) +
        // file header (common to file and central directory)
        header +
        // file comment length
        decToHex(encodedComment.length, 2) +
        // disk number start
        "\x00\x00" +
        // internal file attributes TODO
        "\x00\x00" +
        // external file attributes
        decToHex(extFileAttr, 4) +
        // relative offset of local header
        decToHex(offset, 4) +
        // file name
        encodedFileName +
        // extra field
        extraFields +
        // file comment
        encodedComment;

    return {
        fileRecord: fileRecord,
        dirRecord: dirRecord
    };
};

/**
* Generate the EOCD record.
* @param {Number} entriesCount the number of entries in the zip file.
* @param {Number} centralDirLength the length (in bytes) of the central dir.
* @param {Number} localDirLength the length (in bytes) of the local dir.
* @param {String} comment the zip file comment as a binary string.
* @param {Function} encodeFileName the function to encode the comment.
* @return {String} the EOCD record.
*/
var generateCentralDirectoryEnd = function (entriesCount, centralDirLength, localDirLength, comment, encodeFileName) {
    var dirEnd = "";
    var encodedComment = utils.transformTo("string", encodeFileName(comment));

    // end of central dir signature
    dirEnd = signature.CENTRAL_DIRECTORY_END +
        // number of this disk
        "\x00\x00" +
        // number of the disk with the start of the central directory
        "\x00\x00" +
        // total number of entries in the central directory on this disk
        decToHex(entriesCount, 2) +
        // total number of entries in the central directory
        decToHex(entriesCount, 2) +
        // size of the central directory   4 bytes
        decToHex(centralDirLength, 4) +
        // offset of start of central directory with respect to the starting disk number
        decToHex(localDirLength, 4) +
        // .ZIP file comment length
        decToHex(encodedComment.length, 2) +
        // .ZIP file comment
        encodedComment;

    return dirEnd;
};

/**
* Generate data descriptors for a file entry.
* @param {Object} streamInfo the hash generated by a worker, containing informations
* on the file entry.
* @return {String} the data descriptors.
*/
var generateDataDescriptors = function (streamInfo) {
    var descriptor = "";
    descriptor = signature.DATA_DESCRIPTOR +
        // crc-32                          4 bytes
        decToHex(streamInfo['crc32'], 4) +
        // compressed size                 4 bytes
        decToHex(streamInfo['compressedSize'], 4) +
        // uncompressed size               4 bytes
        decToHex(streamInfo['uncompressedSize'], 4);

    return descriptor;
};

/**
* A worker to concatenate other workers to create a zip file.
* @param {Boolean} streamFiles `true` to stream the content of the files,
* `false` to accumulate it.
* @param {String} comment the comment to use.
* @param {String} platform the platform to use, "UNIX" or "DOS".
* @param {Function} encodeFileName the function to encode file names and comments.
*/
function ZipFileWorker(streamFiles, comment, platform, encodeFileName) {
    GenericWorker.call(this, "ZipFileWorker");
    // The number of bytes written so far. This doesn't count accumulated chunks.
    this.bytesWritten = 0;
    // The comment of the zip file
    this.zipComment = comment;
    // The platform "generating" the zip file.
    this.zipPlatform = platform;
    // the function to encode file names and comments.
    this.encodeFileName = encodeFileName;
    // Should we stream the content of the files ?
    this.streamFiles = streamFiles;
    // If `streamFiles` is false, we will need to accumulate the content of the
    // files to calculate sizes / crc32 (and write them *before* the content).
    // This boolean indicates if we are accumulating chunks (it will change a lot
    // during the lifetime of this worker).
    this.accumulate = false;
    // The buffer receiving chunks when accumulating content.
    this.contentBuffer = [];
    // The list of generated directory records.
    this.dirRecords = [];
    // The offset (in bytes) from the beginning of the zip file for the current source.
    this.currentSourceOffset = 0;
    // The total number of entries in this zip file.
    this.entriesCount = 0;
    // the name of the file currently being added, null when handling the end of the zip file.
    // Used for the emited metadata.
    this.currentFile = null;

    this._sources = [];
}
utils.inherits(ZipFileWorker, GenericWorker);

/**
* @see GenericWorker.push
*/
ZipFileWorker.prototype.push = function (chunk) {

    var currentFilePercent = chunk.meta.percent || 0;
    var entriesCount = this.entriesCount;
    var remainingFiles = this._sources.length;

    if(this.accumulate) {
        this.contentBuffer.push(chunk);
    } else {
        this.bytesWritten += chunk.data.length;

        GenericWorker.prototype.push.call(this, {
            data : chunk.data,
            meta : {
                currentFile : this.currentFile,
                percent : entriesCount ? (currentFilePercent + 100 * (entriesCount - remainingFiles - 1)) / entriesCount : 100
            }
        });
    }
};

/**
* The worker started a new source (an other worker).
* @param {Object} streamInfo the streamInfo object from the new source.
*/
ZipFileWorker.prototype.openedSource = function (streamInfo) {
    this.currentSourceOffset = this.bytesWritten;
    this.currentFile = streamInfo['file'].name;

    var streamedContent = this.streamFiles && !streamInfo['file'].dir;

    // don't stream folders (because they don't have any content)
    if(streamedContent) {
        var record = generateZipParts(streamInfo, streamedContent, false, this.currentSourceOffset, this.zipPlatform, this.encodeFileName);
        this.push({
            data : record.fileRecord,
            meta : {percent:0}
        });
    } else {
        // we need to wait for the whole file before pushing anything
        this.accumulate = true;
    }
};

/**
* The worker finished a source (an other worker).
* @param {Object} streamInfo the streamInfo object from the finished source.
*/
ZipFileWorker.prototype.closedSource = function (streamInfo) {
    this.accumulate = false;
    var streamedContent = this.streamFiles && !streamInfo['file'].dir;
    var record = generateZipParts(streamInfo, streamedContent, true, this.currentSourceOffset, this.zipPlatform, this.encodeFileName);

    this.dirRecords.push(record.dirRecord);
    if(streamedContent) {
        // after the streamed file, we put data descriptors
        this.push({
            data : generateDataDescriptors(streamInfo),
            meta : {percent:100}
        });
    } else {
        // the content wasn't streamed, we need to push everything now
        // first the file record, then the content
        this.push({
            data : record.fileRecord,
            meta : {percent:0}
        });
        while(this.contentBuffer.length) {
            this.push(this.contentBuffer.shift());
        }
    }
    this.currentFile = null;
};

/**
* @see GenericWorker.flush
*/
ZipFileWorker.prototype.flush = function () {

    var localDirLength = this.bytesWritten;
    for(var i = 0; i < this.dirRecords.length; i++) {
        this.push({
            data : this.dirRecords[i],
            meta : {percent:100}
        });
    }
    var centralDirLength = this.bytesWritten - localDirLength;

    var dirEnd = generateCentralDirectoryEnd(this.dirRecords.length, centralDirLength, localDirLength, this.zipComment, this.encodeFileName);

    this.push({
        data : dirEnd,
        meta : {percent:100}
    });
};

/**
* Prepare the next source to be read.
*/
ZipFileWorker.prototype.prepareNextSource = function () {
    this.previous = this._sources.shift();
    this.openedSource(this.previous.streamInfo);
    if (this.isPaused) {
        this.previous.pause();
    } else {
        this.previous.resume();
    }
};

/**
* @see GenericWorker.registerPrevious
*/
ZipFileWorker.prototype.registerPrevious = function (previous) {
    this._sources.push(previous);
    var self = this;

    previous.on('data', function (chunk) {
        self.processChunk(chunk);
    });
    previous.on('end', function () {
        self.closedSource(self.previous.streamInfo);
        if(self._sources.length) {
            self.prepareNextSource();
        } else {
            self.end();
        }
    });
    previous.on('error', function (e) {
        self.error(e);
    });
    return this;
};

/**
* @see GenericWorker.resume
*/
ZipFileWorker.prototype.resume = function () {
    if(!GenericWorker.prototype.resume.call(this)) {
        return false;
    }

    if (!this.previous && this._sources.length) {
        this.prepareNextSource();
        return true;
    }
    if (!this.previous && !this._sources.length && !this.generatedError) {
        this.end();
        return true;
    }
};

/**
* @see GenericWorker.error
*/
ZipFileWorker.prototype.error = function (e) {
    var sources = this._sources;
    if(!GenericWorker.prototype.error.call(this, e)) {
        return false;
    }
    for(var i = 0; i < sources.length; i++) {
        try {
            sources[i].error(e);
        } catch(e) {
            // the `error` exploded, nothing to do
        }
    }
    return true;
};

/**
* @see GenericWorker.lock
*/
ZipFileWorker.prototype.lock = function () {
    GenericWorker.prototype.lock.call(this);
    var sources = this._sources;
    for(var i = 0; i < sources.length; i++) {
        sources[i].lock();
    }
};

module.exports = ZipFileWorker;

},{"../crc32":4,"../signature":23,"../stream/GenericWorker":28,"../utf8":31,"../utils":32}],9:[function(require,module,exports){
'use strict';

var compressions = require('../compressions');
var ZipFileWorker = require('./ZipFileWorker');

/**
* Find the compression to use.
* @param {String} fileCompression the compression defined at the file level, if any.
* @param {String} zipCompression the compression defined at the load() level.
* @return {Object} the compression object to use.
*/
var getCompression = function (fileCompression, zipCompression) {

    var compressionName = fileCompression || zipCompression;
    var compression = compressions[compressionName];
    if (!compression) {
        throw new Error(compressionName + " is not a valid compression method !");
    }
    return compression;
};

/**
* Create a worker to generate a zip file.
* @param {JSZip} zip the JSZip instance at the right root level.
* @param {Object} options to generate the zip file.
* @param {String} comment the comment to use.
*/
exports.generateWorker = function (zip, options, comment) {

    var zipFileWorker = new ZipFileWorker(options.streamFiles, comment, options.platform, options.encodeFileName);
    var entriesCount = 0;
    try {

        zip.forEach(function (relativePath, file) {
            entriesCount++;
            var compression = getCompression(file.options.compression, options.compression);
            var compressionOptions = file.options.compressionOptions || options.compressionOptions || {};
            var dir = file.dir, date = file.date;

            file._compressWorker(compression, compressionOptions)
            .withStreamInfo("file", {
                name : relativePath,
                dir : dir,
                date : date,
                comment : file.comment || "",
                unixPermissions : file.unixPermissions,
                dosPermissions : file.dosPermissions
            })
            .pipe(zipFileWorker);
        });
        zipFileWorker.entriesCount = entriesCount;
    } catch (e) {
        zipFileWorker.error(e);
    }

    return zipFileWorker;
};

},{"../compressions":3,"./ZipFileWorker":8}],10:[function(require,module,exports){
'use strict';

/**
* Representation a of zip file in js
* @constructor
*/
function JSZip() {
    // if this constructor is used without `new`, it adds `new` before itself:
    if(!(this instanceof JSZip)) {
        return new JSZip();
    }

    if(arguments.length) {
        throw new Error("The constructor with parameters has been removed in JSZip 3.0, please check the upgrade guide.");
    }

    // object containing the files :
    // {
    //   "folder/" : {...},
    //   "folder/data.txt" : {...}
    // }
    this.files = {};

    this.comment = null;

    // Where we are in the hierarchy
    this.root = "";
    this.clone = function() {
        var newObj = new JSZip();
        for (var i in this) {
            if (typeof this[i] !== "function") {
                newObj[i] = this[i];
            }
        }
        return newObj;
    };
}
JSZip.prototype = require('./object');
JSZip.prototype.loadAsync = require('./load');
JSZip.support = require('./support');
JSZip.defaults = require('./defaults');

// TODO find a better way to handle this version,
// a require('package.json').version doesn't work with webpack, see #327
JSZip.version = "3.1.5";

JSZip.loadAsync = function (content, options) {
    return new JSZip().loadAsync(content, options);
};

JSZip.external = require("./external");
module.exports = JSZip;

},{"./defaults":5,"./external":6,"./load":11,"./object":15,"./support":30}],11:[function(require,module,exports){
'use strict';
var utils = require('./utils');
var external = require("./external");
var utf8 = require('./utf8');
var utils = require('./utils');
var ZipEntries = require('./zipEntries');
var Crc32Probe = require('./stream/Crc32Probe');
var nodejsUtils = require("./nodejsUtils");

/**
* Check the CRC32 of an entry.
* @param {ZipEntry} zipEntry the zip entry to check.
* @return {Promise} the result.
*/
function checkEntryCRC32(zipEntry) {
    return new external.Promise(function (resolve, reject) {
        var worker = zipEntry.decompressed.getContentWorker().pipe(new Crc32Probe());
        worker.on("error", function (e) {
            reject(e);
        })
        .on("end", function () {
            if (worker.streamInfo.crc32 !== zipEntry.decompressed.crc32) {
                reject(new Error("Corrupted zip : CRC32 mismatch"));
            } else {
                resolve();
            }
        })
        .resume();
    });
}

module.exports = function(data, options) {
    var zip = this;
    options = utils.extend(options || {}, {
        base64: false,
        checkCRC32: false,
        optimizedBinaryString: false,
        createFolders: false,
        decodeFileName: utf8.utf8decode
    });

    if (nodejsUtils.isNode && nodejsUtils.isStream(data)) {
        return external.Promise.reject(new Error("JSZip can't accept a stream when loading a zip file."));
    }

    return utils.prepareContent("the loaded zip file", data, true, options.optimizedBinaryString, options.base64)
    .then(function(data) {
        var zipEntries = new ZipEntries(options);
        zipEntries.load(data);
        return zipEntries;
    }).then(function checkCRC32(zipEntries) {
        var promises = [external.Promise.resolve(zipEntries)];
        var files = zipEntries.files;
        if (options.checkCRC32) {
            for (var i = 0; i < files.length; i++) {
                promises.push(checkEntryCRC32(files[i]));
            }
        }
        return external.Promise.all(promises);
    }).then(function addFiles(results) {
        var zipEntries = results.shift();
        var files = zipEntries.files;
        for (var i = 0; i < files.length; i++) {
            var input = files[i];
            zip.file(input.fileNameStr, input.decompressed, {
                binary: true,
                optimizedBinaryString: true,
                date: input.date,
                dir: input.dir,
                comment : input.fileCommentStr.length ? input.fileCommentStr : null,
                unixPermissions : input.unixPermissions,
                dosPermissions : input.dosPermissions,
                createFolders: options.createFolders
            });
        }
        if (zipEntries.zipComment.length) {
            zip.comment = zipEntries.zipComment;
        }

        return zip;
    });
};

},{"./external":6,"./nodejsUtils":14,"./stream/Crc32Probe":25,"./utf8":31,"./utils":32,"./zipEntries":33}],12:[function(require,module,exports){
"use strict";

var utils = require('../utils');
var GenericWorker = require('../stream/GenericWorker');

/**
* A worker that use a nodejs stream as source.
* @constructor
* @param {String} filename the name of the file entry for this stream.
* @param {Readable} stream the nodejs stream.
*/
function NodejsStreamInputAdapter(filename, stream) {
    GenericWorker.call(this, "Nodejs stream input adapter for " + filename);
    this._upstreamEnded = false;
    this._bindStream(stream);
}

utils.inherits(NodejsStreamInputAdapter, GenericWorker);

/**
* Prepare the stream and bind the callbacks on it.
* Do this ASAP on node 0.10 ! A lazy binding doesn't always work.
* @param {Stream} stream the nodejs stream to use.
*/
NodejsStreamInputAdapter.prototype._bindStream = function (stream) {
    var self = this;
    this._stream = stream;
    stream.pause();
    stream
    .on("data", function (chunk) {
        self.push({
            data: chunk,
            meta : {
                percent : 0
            }
        });
    })
    .on("error", function (e) {
        if(self.isPaused) {
            this.generatedError = e;
        } else {
            self.error(e);
        }
    })
    .on("end", function () {
        if(self.isPaused) {
            self._upstreamEnded = true;
        } else {
            self.end();
        }
    });
};
NodejsStreamInputAdapter.prototype.pause = function () {
    if(!GenericWorker.prototype.pause.call(this)) {
        return false;
    }
    this._stream.pause();
    return true;
};
NodejsStreamInputAdapter.prototype.resume = function () {
    if(!GenericWorker.prototype.resume.call(this)) {
        return false;
    }

    if(this._upstreamEnded) {
        this.end();
    } else {
        this._stream.resume();
    }

    return true;
};

module.exports = NodejsStreamInputAdapter;

},{"../stream/GenericWorker":28,"../utils":32}],13:[function(require,module,exports){
'use strict';

var Readable = require('readable-stream').Readable;

var utils = require('../utils');
utils.inherits(NodejsStreamOutputAdapter, Readable);

/**
* A nodejs stream using a worker as source.
* @see the SourceWrapper in http://nodejs.org/api/stream.html
* @constructor
* @param {StreamHelper} helper the helper wrapping the worker
* @param {Object} options the nodejs stream options
* @param {Function} updateCb the update callback.
*/
function NodejsStreamOutputAdapter(helper, options, updateCb) {
    Readable.call(this, options);
    this._helper = helper;

    var self = this;
    helper.on("data", function (data, meta) {
        if (!self.push(data)) {
            self._helper.pause();
        }
        if(updateCb) {
            updateCb(meta);
        }
    })
    .on("error", function(e) {
        self.emit('error', e);
    })
    .on("end", function () {
        self.push(null);
    });
}

NodejsStreamOutputAdapter.prototype._read = function() {
    this._helper.resume();
};

module.exports = NodejsStreamOutputAdapter;

},{"../utils":32,"readable-stream":16}],14:[function(require,module,exports){
'use strict';

module.exports = {
    /**
     * True if this is running in Nodejs, will be undefined in a browser.
     * In a browser, browserify won't include this file and the whole module
     * will be resolved an empty object.
     */
    isNode : typeof Buffer !== "undefined",
    /**
     * Create a new nodejs Buffer from an existing content.
     * @param {Object} data the data to pass to the constructor.
     * @param {String} encoding the encoding to use.
     * @return {Buffer} a new Buffer.
     */
    newBufferFrom: function(data, encoding) {
        // XXX We can't use `Buffer.from` which comes from `Uint8Array.from`
        // in nodejs v4 (< v.4.5). It's not the expected implementation (and
        // has a different signature).
        // see https://github.com/nodejs/node/issues/8053
        // A condition on nodejs' version won't solve the issue as we don't
        // control the Buffer polyfills that may or may not be used.
        return new Buffer(data, encoding);
    },
    /**
     * Create a new nodejs Buffer with the specified size.
     * @param {Integer} size the size of the buffer.
     * @return {Buffer} a new Buffer.
     */
    allocBuffer: function (size) {
        if (Buffer.alloc) {
            return Buffer.alloc(size);
        } else {
            return new Buffer(size);
        }
    },
    /**
     * Find out if an object is a Buffer.
     * @param {Object} b the object to test.
     * @return {Boolean} true if the object is a Buffer, false otherwise.
     */
    isBuffer : function(b){
        return Buffer.isBuffer(b);
    },

    isStream : function (obj) {
        return obj &&
            typeof obj.on === "function" &&
            typeof obj.pause === "function" &&
            typeof obj.resume === "function";
    }
};

},{}],15:[function(require,module,exports){
'use strict';
var utf8 = require('./utf8');
var utils = require('./utils');
var GenericWorker = require('./stream/GenericWorker');
var StreamHelper = require('./stream/StreamHelper');
var defaults = require('./defaults');
var CompressedObject = require('./compressedObject');
var ZipObject = require('./zipObject');
var generate = require("./generate");
var nodejsUtils = require("./nodejsUtils");
var NodejsStreamInputAdapter = require("./nodejs/NodejsStreamInputAdapter");

/**
* Add a file in the current folder.
* @private
* @param {string} name the name of the file
* @param {String|ArrayBuffer|Uint8Array|Buffer} data the data of the file
* @param {Object} originalOptions the options of the file
* @return {Object} the new file.
*/
var fileAdd = function(name, data, originalOptions) {
    // be sure sub folders exist
    var dataType = utils.getTypeOf(data),
        parent;

    /*
     * Correct options.
     */

    var o = utils.extend(originalOptions || {}, defaults);
    o.date = o.date || new Date();
    if (o.compression !== null) {
        o.compression = o.compression.toUpperCase();
    }

    if (typeof o.unixPermissions === "string") {
        o.unixPermissions = parseInt(o.unixPermissions, 8);
    }

    // UNX_IFDIR  0040000 see zipinfo.c
    if (o.unixPermissions && (o.unixPermissions & 0x4000)) {
        o.dir = true;
    }
    // Bit 4    Directory
    if (o.dosPermissions && (o.dosPermissions & 0x0010)) {
        o.dir = true;
    }

    if (o.dir) {
        name = forceTrailingSlash(name);
    }
    if (o.createFolders && (parent = parentFolder(name))) {
        folderAdd.call(this, parent, true);
    }

    var isUnicodeString = dataType === "string" && o.binary === false && o.base64 === false;
    if (!originalOptions || typeof originalOptions.binary === "undefined") {
        o.binary = !isUnicodeString;
    }

    var isCompressedEmpty = (data instanceof CompressedObject) && data.uncompressedSize === 0;

    if (isCompressedEmpty || o.dir || !data || data.length === 0) {
        o.base64 = false;
        o.binary = true;
        data = "";
        o.compression = "STORE";
        dataType = "string";
    }

    /*
     * Convert content to fit.
     */

    var zipObjectContent = null;
    if (data instanceof CompressedObject || data instanceof GenericWorker) {
        zipObjectContent = data;
    } else if (nodejsUtils.isNode && nodejsUtils.isStream(data)) {
        zipObjectContent = new NodejsStreamInputAdapter(name, data);
    } else {
        zipObjectContent = utils.prepareContent(name, data, o.binary, o.optimizedBinaryString, o.base64);
    }

    var object = new ZipObject(name, zipObjectContent, o);
    this.files[name] = object;
    /*
    TODO: we can't throw an exception because we have async promises
    (we can have a promise of a Date() for example) but returning a
    promise is useless because file(name, data) returns the JSZip
    object for chaining. Should we break that to allow the user
    to catch the error ?

    return external.Promise.resolve(zipObjectContent)
    .then(function () {
        return object;
    });
    */
};

/**
* Find the parent folder of the path.
* @private
* @param {string} path the path to use
* @return {string} the parent folder, or ""
*/
var parentFolder = function (path) {
    if (path.slice(-1) === '/') {
        path = path.substring(0, path.length - 1);
    }
    var lastSlash = path.lastIndexOf('/');
    return (lastSlash > 0) ? path.substring(0, lastSlash) : "";
};

/**
* Returns the path with a slash at the end.
* @private
* @param {String} path the path to check.
* @return {String} the path with a trailing slash.
*/
var forceTrailingSlash = function(path) {
    // Check the name ends with a /
    if (path.slice(-1) !== "/") {
        path += "/"; // IE doesn't like substr(-1)
    }
    return path;
};

/**
* Add a (sub) folder in the current folder.
* @private
* @param {string} name the folder's name
* @param {boolean=} [createFolders] If true, automatically create sub
*  folders. Defaults to false.
* @return {Object} the new folder.
*/
var folderAdd = function(name, createFolders) {
    createFolders = (typeof createFolders !== 'undefined') ? createFolders : defaults.createFolders;

    name = forceTrailingSlash(name);

    // Does this folder already exist?
    if (!this.files[name]) {
        fileAdd.call(this, name, null, {
            dir: true,
            createFolders: createFolders
        });
    }
    return this.files[name];
};

/**
* Cross-window, cross-Node-context regular expression detection
* @param  {Object}  object Anything
* @return {Boolean}        true if the object is a regular expression,
* false otherwise
*/
function isRegExp(object) {
    return Object.prototype.toString.call(object) === "[object RegExp]";
}

// return the actual prototype of JSZip
var out = {
    /**
     * @see loadAsync
     */
    load: function() {
        throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.");
    },

    /**
     * Call a callback function for each entry at this folder level.
     * @param {Function} cb the callback function:
     * function (relativePath, file) {...}
     * It takes 2 arguments : the relative path and the file.
     */
    forEach: function(cb) {
        var filename, relativePath, file;
        for (filename in this.files) {
            if (!this.files.hasOwnProperty(filename)) {
                continue;
            }
            file = this.files[filename];
            relativePath = filename.slice(this.root.length, filename.length);
            if (relativePath && filename.slice(0, this.root.length) === this.root) { // the file is in the current root
                cb(relativePath, file); // TODO reverse the parameters ? need to be clean AND consistent with the filter search fn...
            }
        }
    },

    /**
     * Filter nested files/folders with the specified function.
     * @param {Function} search the predicate to use :
     * function (relativePath, file) {...}
     * It takes 2 arguments : the relative path and the file.
     * @return {Array} An array of matching elements.
     */
    filter: function(search) {
        var result = [];
        this.forEach(function (relativePath, entry) {
            if (search(relativePath, entry)) { // the file matches the function
                result.push(entry);
            }

        });
        return result;
    },

    /**
     * Add a file to the zip file, or search a file.
     * @param   {string|RegExp} name The name of the file to add (if data is defined),
     * the name of the file to find (if no data) or a regex to match files.
     * @param   {String|ArrayBuffer|Uint8Array|Buffer} data  The file data, either raw or base64 encoded
     * @param   {Object} o     File options
     * @return  {JSZip|Object|Array} this JSZip object (when adding a file),
     * a file (when searching by string) or an array of files (when searching by regex).
     */
    file: function(name, data, o) {
        if (arguments.length === 1) {
            if (isRegExp(name)) {
                var regexp = name;
                return this.filter(function(relativePath, file) {
                    return !file.dir && regexp.test(relativePath);
                });
            }
            else { // text
                var obj = this.files[this.root + name];
                if (obj && !obj.dir) {
                    return obj;
                } else {
                    return null;
                }
            }
        }
        else { // more than one argument : we have data !
            name = this.root + name;
            fileAdd.call(this, name, data, o);
        }
        return this;
    },

    /**
     * Add a directory to the zip file, or search.
     * @param   {String|RegExp} arg The name of the directory to add, or a regex to search folders.
     * @return  {JSZip} an object with the new directory as the root, or an array containing matching folders.
     */
    folder: function(arg) {
        if (!arg) {
            return this;
        }

        if (isRegExp(arg)) {
            return this.filter(function(relativePath, file) {
                return file.dir && arg.test(relativePath);
            });
        }

        // else, name is a new folder
        var name = this.root + arg;
        var newFolder = folderAdd.call(this, name);

        // Allow chaining by returning a new object with this folder as the root
        var ret = this.clone();
        ret.root = newFolder.name;
        return ret;
    },

    /**
     * Delete a file, or a directory and all sub-files, from the zip
     * @param {string} name the name of the file to delete
     * @return {JSZip} this JSZip object
     */
    remove: function(name) {
        name = this.root + name;
        var file = this.files[name];
        if (!file) {
            // Look for any folders
            if (name.slice(-1) !== "/") {
                name += "/";
            }
            file = this.files[name];
        }

        if (file && !file.dir) {
            // file
            delete this.files[name];
        } else {
            // maybe a folder, delete recursively
            var kids = this.filter(function(relativePath, file) {
                return file.name.slice(0, name.length) === name;
            });
            for (var i = 0; i < kids.length; i++) {
                delete this.files[kids[i].name];
            }
        }

        return this;
    },

    /**
     * Generate the complete zip file
     * @param {Object} options the options to generate the zip file :
     * - compression, "STORE" by default.
     * - type, "base64" by default. Values are : string, base64, uint8array, arraybuffer, blob.
     * @return {String|Uint8Array|ArrayBuffer|Buffer|Blob} the zip file
     */
    generate: function(options) {
        throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.");
    },

    /**
     * Generate the complete zip file as an internal stream.
     * @param {Object} options the options to generate the zip file :
     * - compression, "STORE" by default.
     * - type, "base64" by default. Values are : string, base64, uint8array, arraybuffer, blob.
     * @return {StreamHelper} the streamed zip file.
     */
    generateInternalStream: function(options) {
      var worker, opts = {};
      try {
          opts = utils.extend(options || {}, {
              streamFiles: false,
              compression: "STORE",
              compressionOptions : null,
              type: "",
              platform: "DOS",
              comment: null,
              mimeType: 'application/zip',
              encodeFileName: utf8.utf8encode
          });

          opts.type = opts.type.toLowerCase();
          opts.compression = opts.compression.toUpperCase();

          // "binarystring" is prefered but the internals use "string".
          if(opts.type === "binarystring") {
            opts.type = "string";
          }

          if (!opts.type) {
            throw new Error("No output type specified.");
          }

          utils.checkSupport(opts.type);

          // accept nodejs `process.platform`
          if(
              opts.platform === 'darwin' ||
              opts.platform === 'freebsd' ||
              opts.platform === 'linux' ||
              opts.platform === 'sunos'
          ) {
              opts.platform = "UNIX";
          }
          if (opts.platform === 'win32') {
              opts.platform = "DOS";
          }

          var comment = opts.comment || this.comment || "";
          worker = generate.generateWorker(this, opts, comment);
      } catch (e) {
        worker = new GenericWorker("error");
        worker.error(e);
      }
      return new StreamHelper(worker, opts.type || "string", opts.mimeType);
    },
    /**
     * Generate the complete zip file asynchronously.
     * @see generateInternalStream
     */
    generateAsync: function(options, onUpdate) {
        return this.generateInternalStream(options).accumulate(onUpdate);
    },
    /**
     * Generate the complete zip file asynchronously.
     * @see generateInternalStream
     */
    generateNodeStream: function(options, onUpdate) {
        options = options || {};
        if (!options.type) {
            options.type = "nodebuffer";
        }
        return this.generateInternalStream(options).toNodejsStream(onUpdate);
    }
};
module.exports = out;

},{"./compressedObject":2,"./defaults":5,"./generate":9,"./nodejs/NodejsStreamInputAdapter":12,"./nodejsUtils":14,"./stream/GenericWorker":28,"./stream/StreamHelper":29,"./utf8":31,"./utils":32,"./zipObject":35}],16:[function(require,module,exports){
/*
* This file is used by module bundlers (browserify/webpack/etc) when
* including a stream implementation. We use "readable-stream" to get a
* consistent behavior between nodejs versions but bundlers often have a shim
* for "stream". Using this shim greatly improve the compatibility and greatly
* reduce the final size of the bundle (only one stream implementation, not
* two).
*/
module.exports = require("stream");

},{"stream":undefined}],17:[function(require,module,exports){
'use strict';
var DataReader = require('./DataReader');
var utils = require('../utils');

function ArrayReader(data) {
    DataReader.call(this, data);
for(var i = 0; i < this.data.length; i++) {
  data[i] = data[i] & 0xFF;
}
}
utils.inherits(ArrayReader, DataReader);
/**
* @see DataReader.byteAt
*/
ArrayReader.prototype.byteAt = function(i) {
    return this.data[this.zero + i];
};
/**
* @see DataReader.lastIndexOfSignature
*/
ArrayReader.prototype.lastIndexOfSignature = function(sig) {
    var sig0 = sig.charCodeAt(0),
        sig1 = sig.charCodeAt(1),
        sig2 = sig.charCodeAt(2),
        sig3 = sig.charCodeAt(3);
    for (var i = this.length - 4; i >= 0; --i) {
        if (this.data[i] === sig0 && this.data[i + 1] === sig1 && this.data[i + 2] === sig2 && this.data[i + 3] === sig3) {
            return i - this.zero;
        }
    }

    return -1;
};
/**
* @see DataReader.readAndCheckSignature
*/
ArrayReader.prototype.readAndCheckSignature = function (sig) {
    var sig0 = sig.charCodeAt(0),
        sig1 = sig.charCodeAt(1),
        sig2 = sig.charCodeAt(2),
        sig3 = sig.charCodeAt(3),
        data = this.readData(4);
    return sig0 === data[0] && sig1 === data[1] && sig2 === data[2] && sig3 === data[3];
};
/**
* @see DataReader.readData
*/
ArrayReader.prototype.readData = function(size) {
    this.checkOffset(size);
    if(size === 0) {
        return [];
    }
    var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);
    this.index += size;
    return result;
};
module.exports = ArrayReader;

},{"../utils":32,"./DataReader":18}],18:[function(require,module,exports){
'use strict';
var utils = require('../utils');

function DataReader(data) {
    this.data = data; // type : see implementation
    this.length = data.length;
    this.index = 0;
    this.zero = 0;
}
DataReader.prototype = {
    /**
     * Check that the offset will not go too far.
     * @param {string} offset the additional offset to check.
     * @throws {Error} an Error if the offset is out of bounds.
     */
    checkOffset: function(offset) {
        this.checkIndex(this.index + offset);
    },
    /**
     * Check that the specified index will not be too far.
     * @param {string} newIndex the index to check.
     * @throws {Error} an Error if the index is out of bounds.
     */
    checkIndex: function(newIndex) {
        if (this.length < this.zero + newIndex || newIndex < 0) {
            throw new Error("End of data reached (data length = " + this.length + ", asked index = " + (newIndex) + "). Corrupted zip ?");
        }
    },
    /**
     * Change the index.
     * @param {number} newIndex The new index.
     * @throws {Error} if the new index is out of the data.
     */
    setIndex: function(newIndex) {
        this.checkIndex(newIndex);
        this.index = newIndex;
    },
    /**
     * Skip the next n bytes.
     * @param {number} n the number of bytes to skip.
     * @throws {Error} if the new index is out of the data.
     */
    skip: function(n) {
        this.setIndex(this.index + n);
    },
    /**
     * Get the byte at the specified index.
     * @param {number} i the index to use.
     * @return {number} a byte.
     */
    byteAt: function(i) {
        // see implementations
    },
    /**
     * Get the next number with a given byte size.
     * @param {number} size the number of bytes to read.
     * @return {number} the corresponding number.
     */
    readInt: function(size) {
        var result = 0,
            i;
        this.checkOffset(size);
        for (i = this.index + size - 1; i >= this.index; i--) {
            result = (result << 8) + this.byteAt(i);
        }
        this.index += size;
        return result;
    },
    /**
     * Get the next string with a given byte size.
     * @param {number} size the number of bytes to read.
     * @return {string} the corresponding string.
     */
    readString: function(size) {
        return utils.transformTo("string", this.readData(size));
    },
    /**
     * Get raw data without conversion, <size> bytes.
     * @param {number} size the number of bytes to read.
     * @return {Object} the raw data, implementation specific.
     */
    readData: function(size) {
        // see implementations
    },
    /**
     * Find the last occurence of a zip signature (4 bytes).
     * @param {string} sig the signature to find.
     * @return {number} the index of the last occurence, -1 if not found.
     */
    lastIndexOfSignature: function(sig) {
        // see implementations
    },
    /**
     * Read the signature (4 bytes) at the current position and compare it with sig.
     * @param {string} sig the expected signature
     * @return {boolean} true if the signature matches, false otherwise.
     */
    readAndCheckSignature: function(sig) {
        // see implementations
    },
    /**
     * Get the next date.
     * @return {Date} the date.
     */
    readDate: function() {
        var dostime = this.readInt(4);
        return new Date(Date.UTC(
        ((dostime >> 25) & 0x7f) + 1980, // year
        ((dostime >> 21) & 0x0f) - 1, // month
        (dostime >> 16) & 0x1f, // day
        (dostime >> 11) & 0x1f, // hour
        (dostime >> 5) & 0x3f, // minute
        (dostime & 0x1f) << 1)); // second
    }
};
module.exports = DataReader;

},{"../utils":32}],19:[function(require,module,exports){
'use strict';
var Uint8ArrayReader = require('./Uint8ArrayReader');
var utils = require('../utils');

function NodeBufferReader(data) {
    Uint8ArrayReader.call(this, data);
}
utils.inherits(NodeBufferReader, Uint8ArrayReader);

/**
* @see DataReader.readData
*/
NodeBufferReader.prototype.readData = function(size) {
    this.checkOffset(size);
    var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);
    this.index += size;
    return result;
};
module.exports = NodeBufferReader;

},{"../utils":32,"./Uint8ArrayReader":21}],20:[function(require,module,exports){
'use strict';
var DataReader = require('./DataReader');
var utils = require('../utils');

function StringReader(data) {
    DataReader.call(this, data);
}
utils.inherits(StringReader, DataReader);
/**
* @see DataReader.byteAt
*/
StringReader.prototype.byteAt = function(i) {
    return this.data.charCodeAt(this.zero + i);
};
/**
* @see DataReader.lastIndexOfSignature
*/
StringReader.prototype.lastIndexOfSignature = function(sig) {
    return this.data.lastIndexOf(sig) - this.zero;
};
/**
* @see DataReader.readAndCheckSignature
*/
StringReader.prototype.readAndCheckSignature = function (sig) {
    var data = this.readData(4);
    return sig === data;
};
/**
* @see DataReader.readData
*/
StringReader.prototype.readData = function(size) {
    this.checkOffset(size);
    // this will work because the constructor applied the "& 0xff" mask.
    var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);
    this.index += size;
    return result;
};
module.exports = StringReader;

},{"../utils":32,"./DataReader":18}],21:[function(require,module,exports){
'use strict';
var ArrayReader = require('./ArrayReader');
var utils = require('../utils');

function Uint8ArrayReader(data) {
    ArrayReader.call(this, data);
}
utils.inherits(Uint8ArrayReader, ArrayReader);
/**
* @see DataReader.readData
*/
Uint8ArrayReader.prototype.readData = function(size) {
    this.checkOffset(size);
    if(size === 0) {
        // in IE10, when using subarray(idx, idx), we get the array [0x00] instead of [].
        return new Uint8Array(0);
    }
    var result = this.data.subarray(this.zero + this.index, this.zero + this.index + size);
    this.index += size;
    return result;
};
module.exports = Uint8ArrayReader;

},{"../utils":32,"./ArrayReader":17}],22:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var support = require('../support');
var ArrayReader = require('./ArrayReader');
var StringReader = require('./StringReader');
var NodeBufferReader = require('./NodeBufferReader');
var Uint8ArrayReader = require('./Uint8ArrayReader');

/**
* Create a reader adapted to the data.
* @param {String|ArrayBuffer|Uint8Array|Buffer} data the data to read.
* @return {DataReader} the data reader.
*/
module.exports = function (data) {
    var type = utils.getTypeOf(data);
    utils.checkSupport(type);
    if (type === "string" && !support.uint8array) {
        return new StringReader(data);
    }
    if (type === "nodebuffer") {
        return new NodeBufferReader(data);
    }
    if (support.uint8array) {
        return new Uint8ArrayReader(utils.transformTo("uint8array", data));
    }
    return new ArrayReader(utils.transformTo("array", data));
};

},{"../support":30,"../utils":32,"./ArrayReader":17,"./NodeBufferReader":19,"./StringReader":20,"./Uint8ArrayReader":21}],23:[function(require,module,exports){
'use strict';
exports.LOCAL_FILE_HEADER = "PK\x03\x04";
exports.CENTRAL_FILE_HEADER = "PK\x01\x02";
exports.CENTRAL_DIRECTORY_END = "PK\x05\x06";
exports.ZIP64_CENTRAL_DIRECTORY_LOCATOR = "PK\x06\x07";
exports.ZIP64_CENTRAL_DIRECTORY_END = "PK\x06\x06";
exports.DATA_DESCRIPTOR = "PK\x07\x08";

},{}],24:[function(require,module,exports){
'use strict';

var GenericWorker = require('./GenericWorker');
var utils = require('../utils');

/**
--> --------------------

--> maximum size reached

--> --------------------

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