info@54: /**
info@54: 
info@54: JSZip - A Javascript class for generating and reading zip files
info@54: <http://stuartk.com/jszip>
info@54: 
info@54: (c) 2009-2012 Stuart Knightley <stuart [at] stuartk.com>
info@54: Dual licenced under the MIT license or GPLv3. See LICENSE.markdown.
info@54: 
info@54: Usage:
info@54:    zip = new JSZip();
info@54:    zip.file("hello.txt", "Hello, World!").file("tempfile", "nothing");
info@54:    zip.folder("images").file("smile.gif", base64Data, {base64: true});
info@54:    zip.file("Xmas.txt", "Ho ho ho !", {date : new Date("December 25, 2007 00:00:01")});
info@54:    zip.remove("tempfile");
info@54: 
info@54:    base64zip = zip.generate();
info@54: 
info@54: **/
info@54: // We use strict, but it should not be placed outside of a function because
info@54: // the environment is shared inside the browser.
info@54: // "use strict";
info@54: 
info@54: /**
info@54:  * Representation a of zip file in js
info@54:  * @constructor
info@54:  * @param {String=|ArrayBuffer=|Uint8Array=|Buffer=} data the data to load, if any (optional).
info@54:  * @param {Object=} options the options for creating this objects (optional).
info@54:  */
info@54: var JSZip = function(data, options) {
info@54:    // object containing the files :
info@54:    // {
info@54:    //   "folder/" : {...},
info@54:    //   "folder/data.txt" : {...}
info@54:    // }
info@54:    this.files = {};
info@54: 
info@54:    // Where we are in the hierarchy
info@54:    this.root = "";
info@54: 
info@54:    if (data) {
info@54:       this.load(data, options);
info@54:    }
info@54: };
info@54: 
info@54: JSZip.signature = {
info@54:    LOCAL_FILE_HEADER : "\x50\x4b\x03\x04",
info@54:    CENTRAL_FILE_HEADER : "\x50\x4b\x01\x02",
info@54:    CENTRAL_DIRECTORY_END : "\x50\x4b\x05\x06",
info@54:    ZIP64_CENTRAL_DIRECTORY_LOCATOR : "\x50\x4b\x06\x07",
info@54:    ZIP64_CENTRAL_DIRECTORY_END : "\x50\x4b\x06\x06",
info@54:    DATA_DESCRIPTOR : "\x50\x4b\x07\x08"
info@54: };
info@54: 
info@54: // Default properties for a new file
info@54: JSZip.defaults = {
info@54:    base64: false,
info@54:    binary: false,
info@54:    dir: false,
info@54:    date: null,
info@54:    compression: null
info@54: };
info@54: 
info@54: /*
info@54:  * List features that require a modern browser, and if the current browser support them.
info@54:  */
info@54: JSZip.support = {
info@54:    // contains true if JSZip can read/generate ArrayBuffer, false otherwise.
info@54:    arraybuffer : (function(){
info@54:       return typeof ArrayBuffer !== "undefined" && typeof Uint8Array !== "undefined";
info@54:    })(),
info@54:    // contains true if JSZip can read/generate nodejs Buffer, false otherwise.
info@54:    nodebuffer : (function(){
info@54:       return typeof Buffer !== "undefined";
info@54:    })(),
info@54:    // contains true if JSZip can read/generate Uint8Array, false otherwise.
info@54:    uint8array : (function(){
info@54:       return typeof Uint8Array !== "undefined";
info@54:    })(),
info@54:    // contains true if JSZip can read/generate Blob, false otherwise.
info@54:    blob : (function(){
info@54:       // the spec started with BlobBuilder then replaced it with a construtor for Blob.
info@54:       // Result : we have browsers that :
info@54:       // * know the BlobBuilder (but with prefix)
info@54:       // * know the Blob constructor
info@54:       // * know about Blob but not about how to build them
info@54:       // About the "=== 0" test : if given the wrong type, it may be converted to a string.
info@54:       // Instead of an empty content, we will get "[object Uint8Array]" for example.
info@54:       if (typeof ArrayBuffer === "undefined") {
info@54:          return false;
info@54:       }
info@54:       var buffer = new ArrayBuffer(0);
info@54:       try {
info@54:          return new Blob([buffer], { type: "application/zip" }).size === 0;
info@54:       }
info@54:       catch(e) {}
info@54: 
info@54:       try {
info@54:          var BlobBuilder = window.BlobBuilder || window.WebKitBlobBuilder || window.MozBlobBuilder || window.MSBlobBuilder;
info@54:          var builder = new BlobBuilder();
info@54:          builder.append(buffer);
info@54:          return builder.getBlob('application/zip').size === 0;
info@54:       }
info@54:       catch(e) {}
info@54: 
info@54:       return false;
info@54:    })()
info@54: };
info@54: 
info@54: JSZip.prototype = (function () {
info@54:    var textEncoder, textDecoder;
info@54:    if (
info@54:       JSZip.support.uint8array &&
info@54:       typeof TextEncoder === "function" &&
info@54:       typeof TextDecoder === "function"
info@54:    ) {
info@54:       textEncoder = new TextEncoder("utf-8");
info@54:       textDecoder = new TextDecoder("utf-8");
info@54:    }
info@54: 
info@54:    /**
info@54:     * Returns the raw data of a ZipObject, decompress the content if necessary.
info@54:     * @param {ZipObject} file the file to use.
info@54:     * @return {String|ArrayBuffer|Uint8Array|Buffer} the data.
info@54:     */
info@54:    var getRawData = function (file) {
info@54:       if (file._data instanceof JSZip.CompressedObject) {
info@54:          file._data = file._data.getContent();
info@54:          file.options.binary = true;
info@54:          file.options.base64 = false;
info@54: 
info@54:          if (JSZip.utils.getTypeOf(file._data) === "uint8array") {
info@54:             var copy = file._data;
info@54:             // when reading an arraybuffer, the CompressedObject mechanism will keep it and subarray() a Uint8Array.
info@54:             // if we request a file in the same format, we might get the same Uint8Array or its ArrayBuffer (the original zip file).
info@54:             file._data = new Uint8Array(copy.length);
info@54:             // with an empty Uint8Array, Opera fails with a "Offset larger than array size"
info@54:             if (copy.length !== 0) {
info@54:                file._data.set(copy, 0);
info@54:             }
info@54:          }
info@54:       }
info@54:       return file._data;
info@54:    };
info@54: 
info@54:    /**
info@54:     * Returns the data of a ZipObject in a binary form. If the content is an unicode string, encode it.
info@54:     * @param {ZipObject} file the file to use.
info@54:     * @return {String|ArrayBuffer|Uint8Array|Buffer} the data.
info@54:     */
info@54:    var getBinaryData = function (file) {
info@54:       var result = getRawData(file), type = JSZip.utils.getTypeOf(result);
info@54:       if (type === "string") {
info@54:          if (!file.options.binary) {
info@54:             // unicode text !
info@54:             // unicode string => binary string is a painful process, check if we can avoid it.
info@54:             if (textEncoder) {
info@54:                return textEncoder.encode(result);
info@54:             }
info@54:             if (JSZip.support.nodebuffer) {
info@54:                return new Buffer(result, "utf-8");
info@54:             }
info@54:          }
info@54:          return file.asBinary();
info@54:       }
info@54:       return result;
info@54:    };
info@54: 
info@54:    /**
info@54:     * Transform this._data into a string.
info@54:     * @param {function} filter a function String -> String, applied if not null on the result.
info@54:     * @return {String} the string representing this._data.
info@54:     */
info@54:    var dataToString = function (asUTF8) {
info@54:       var result = getRawData(this);
info@54:       if (result === null || typeof result === "undefined") {
info@54:          return "";
info@54:       }
info@54:       // if the data is a base64 string, we decode it before checking the encoding !
info@54:       if (this.options.base64) {
info@54:          result = JSZip.base64.decode(result);
info@54:       }
info@54:       if (asUTF8 && this.options.binary) {
info@54:          // JSZip.prototype.utf8decode supports arrays as input
info@54:          // skip to array => string step, utf8decode will do it.
info@54:          result = JSZip.prototype.utf8decode(result);
info@54:       } else {
info@54:          // no utf8 transformation, do the array => string step.
info@54:          result = JSZip.utils.transformTo("string", result);
info@54:       }
info@54: 
info@54:       if (!asUTF8 && !this.options.binary) {
info@54:          result = JSZip.prototype.utf8encode(result);
info@54:       }
info@54:       return result;
info@54:    };
info@54:    /**
info@54:     * A simple object representing a file in the zip file.
info@54:     * @constructor
info@54:     * @param {string} name the name of the file
info@54:     * @param {String|ArrayBuffer|Uint8Array|Buffer} data the data
info@54:     * @param {Object} options the options of the file
info@54:     */
info@54:    var ZipObject = function (name, data, options) {
info@54:       this.name = name;
info@54:       this._data = data;
info@54:       this.options = options;
info@54:    };
info@54: 
info@54:    ZipObject.prototype = {
info@54:       /**
info@54:        * Return the content as UTF8 string.
info@54:        * @return {string} the UTF8 string.
info@54:        */
info@54:       asText : function () {
info@54:          return dataToString.call(this, true);
info@54:       },
info@54:       /**
info@54:        * Returns the binary content.
info@54:        * @return {string} the content as binary.
info@54:        */
info@54:       asBinary : function () {
info@54:          return dataToString.call(this, false);
info@54:       },
info@54:       /**
info@54:        * Returns the content as a nodejs Buffer.
info@54:        * @return {Buffer} the content as a Buffer.
info@54:        */
info@54:       asNodeBuffer : function () {
info@54:          var result = getBinaryData(this);
info@54:          return JSZip.utils.transformTo("nodebuffer", result);
info@54:       },
info@54:       /**
info@54:        * Returns the content as an Uint8Array.
info@54:        * @return {Uint8Array} the content as an Uint8Array.
info@54:        */
info@54:       asUint8Array : function () {
info@54:          var result = getBinaryData(this);
info@54:          return JSZip.utils.transformTo("uint8array", result);
info@54:       },
info@54:       /**
info@54:        * Returns the content as an ArrayBuffer.
info@54:        * @return {ArrayBuffer} the content as an ArrayBufer.
info@54:        */
info@54:       asArrayBuffer : function () {
info@54:          return this.asUint8Array().buffer;
info@54:       }
info@54:    };
info@54: 
info@54:    /**
info@54:     * Transform an integer into a string in hexadecimal.
info@54:     * @private
info@54:     * @param {number} dec the number to convert.
info@54:     * @param {number} bytes the number of bytes to generate.
info@54:     * @returns {string} the result.
info@54:     */
info@54:    var decToHex = function(dec, bytes) {
info@54:       var hex = "", i;
info@54:       for(i = 0; i < bytes; i++) {
info@54:          hex += String.fromCharCode(dec&0xff);
info@54:          dec=dec>>>8;
info@54:       }
info@54:       return hex;
info@54:    };
info@54: 
info@54:    /**
info@54:     * Merge the objects passed as parameters into a new one.
info@54:     * @private
info@54:     * @param {...Object} var_args All objects to merge.
info@54:     * @return {Object} a new object with the data of the others.
info@54:     */
info@54:    var extend = function () {
info@54:       var result = {}, i, attr;
info@54:       for (i = 0; i < arguments.length; i++) { // arguments is not enumerable in some browsers
info@54:          for (attr in arguments[i]) {
info@54:             if (arguments[i].hasOwnProperty(attr) && typeof result[attr] === "undefined") {
info@54:                result[attr] = arguments[i][attr];
info@54:             }
info@54:          }
info@54:       }
info@54:       return result;
info@54:    };
info@54: 
info@54:    /**
info@54:     * Transforms the (incomplete) options from the user into the complete
info@54:     * set of options to create a file.
info@54:     * @private
info@54:     * @param {Object} o the options from the user.
info@54:     * @return {Object} the complete set of options.
info@54:     */
info@54:    var prepareFileAttrs = function (o) {
info@54:       o = o || {};
info@54:       /*jshint -W041 */
info@54:       if (o.base64 === true && o.binary == null) {
info@54:          o.binary = true;
info@54:       }
info@54:       /*jshint +W041 */
info@54:       o = extend(o, JSZip.defaults);
info@54:       o.date = o.date || new Date();
info@54:       if (o.compression !== null) o.compression = o.compression.toUpperCase();
info@54: 
info@54:       return o;
info@54:    };
info@54: 
info@54:    /**
info@54:     * Add a file in the current folder.
info@54:     * @private
info@54:     * @param {string} name the name of the file
info@54:     * @param {String|ArrayBuffer|Uint8Array|Buffer} data the data of the file
info@54:     * @param {Object} o the options of the file
info@54:     * @return {Object} the new file.
info@54:     */
info@54:    var fileAdd = function (name, data, o) {
info@54:       // be sure sub folders exist
info@54:       var parent = parentFolder(name), dataType = JSZip.utils.getTypeOf(data);
info@54:       if (parent) {
info@54:          folderAdd.call(this, parent);
info@54:       }
info@54: 
info@54:       o = prepareFileAttrs(o);
info@54: 
info@54:       if (o.dir || data === null || typeof data === "undefined") {
info@54:          o.base64 = false;
info@54:          o.binary = false;
info@54:          data = null;
info@54:       } else if (dataType === "string") {
info@54:          if (o.binary && !o.base64) {
info@54:             // optimizedBinaryString == true means that the file has already been filtered with a 0xFF mask
info@54:             if (o.optimizedBinaryString !== true) {
info@54:                // this is a string, not in a base64 format.
info@54:                // Be sure that this is a correct "binary string"
info@54:                data = JSZip.utils.string2binary(data);
info@54:             }
info@54:          }
info@54:       } else { // arraybuffer, uint8array, ...
info@54:          o.base64 = false;
info@54:          o.binary = true;
info@54: 
info@54:          if (!dataType && !(data instanceof JSZip.CompressedObject)) {
info@54:             throw new Error("The data of '" + name + "' is in an unsupported format !");
info@54:          }
info@54: 
info@54:          // special case : it's way easier to work with Uint8Array than with ArrayBuffer
info@54:          if (dataType === "arraybuffer") {
info@54:             data = JSZip.utils.transformTo("uint8array", data);
info@54:          }
info@54:       }
info@54: 
info@54:       var object = new ZipObject(name, data, o);
info@54:       this.files[name] = object;
info@54:       return object;
info@54:    };
info@54: 
info@54: 
info@54:    /**
info@54:     * Find the parent folder of the path.
info@54:     * @private
info@54:     * @param {string} path the path to use
info@54:     * @return {string} the parent folder, or ""
info@54:     */
info@54:    var parentFolder = function (path) {
info@54:       if (path.slice(-1) == '/') {
info@54:          path = path.substring(0, path.length - 1);
info@54:       }
info@54:       var lastSlash = path.lastIndexOf('/');
info@54:       return (lastSlash > 0) ? path.substring(0, lastSlash) : "";
info@54:    };
info@54: 
info@54:    /**
info@54:     * Add a (sub) folder in the current folder.
info@54:     * @private
info@54:     * @param {string} name the folder's name
info@54:     * @return {Object} the new folder.
info@54:     */
info@54:    var folderAdd = function (name) {
info@54:       // Check the name ends with a /
info@54:       if (name.slice(-1) != "/") {
info@54:          name += "/"; // IE doesn't like substr(-1)
info@54:       }
info@54: 
info@54:       // Does this folder already exist?
info@54:       if (!this.files[name]) {
info@54:          fileAdd.call(this, name, null, {dir:true});
info@54:       }
info@54:       return this.files[name];
info@54:    };
info@54: 
info@54:    /**
info@54:     * Generate a JSZip.CompressedObject for a given zipOject.
info@54:     * @param {ZipObject} file the object to read.
info@54:     * @param {JSZip.compression} compression the compression to use.
info@54:     * @return {JSZip.CompressedObject} the compressed result.
info@54:     */
info@54:    var generateCompressedObjectFrom = function (file, compression) {
info@54:       var result = new JSZip.CompressedObject(), content;
info@54: 
info@54:       // the data has not been decompressed, we might reuse things !
info@54:       if (file._data instanceof JSZip.CompressedObject) {
info@54:          result.uncompressedSize = file._data.uncompressedSize;
info@54:          result.crc32 = file._data.crc32;
info@54: 
info@54:          if (result.uncompressedSize === 0 || file.options.dir) {
info@54:             compression = JSZip.compressions['STORE'];
info@54:             result.compressedContent = "";
info@54:             result.crc32 = 0;
info@54:          } else if (file._data.compressionMethod === compression.magic) {
info@54:             result.compressedContent = file._data.getCompressedContent();
info@54:          } else {
info@54:             content = file._data.getContent();
info@54:             // need to decompress / recompress
info@54:             result.compressedContent = compression.compress(JSZip.utils.transformTo(compression.compressInputType, content));
info@54:          }
info@54:       } else {
info@54:          // have uncompressed data
info@54:          content = getBinaryData(file);
info@54:          if (!content || content.length === 0 || file.options.dir) {
info@54:             compression = JSZip.compressions['STORE'];
info@54:             content = "";
info@54:          }
info@54:          result.uncompressedSize = content.length;
info@54:          result.crc32 = this.crc32(content);
info@54:          result.compressedContent = compression.compress(JSZip.utils.transformTo(compression.compressInputType, content));
info@54:       }
info@54: 
info@54:       result.compressedSize = result.compressedContent.length;
info@54:       result.compressionMethod = compression.magic;
info@54: 
info@54:       return result;
info@54:    };
info@54: 
info@54:    /**
info@54:     * Generate the various parts used in the construction of the final zip file.
info@54:     * @param {string} name the file name.
info@54:     * @param {ZipObject} file the file content.
info@54:     * @param {JSZip.CompressedObject} compressedObject the compressed object.
info@54:     * @param {number} offset the current offset from the start of the zip file.
info@54:     * @return {object} the zip parts.
info@54:     */
info@54:    var generateZipParts = function(name, file, compressedObject, offset) {
info@54:       var data = compressedObject.compressedContent,
info@54:           utfEncodedFileName = this.utf8encode(file.name),
info@54:           useUTF8 = utfEncodedFileName !== file.name,
info@54:           o       = file.options,
info@54:           dosTime,
info@54:           dosDate;
info@54: 
info@54:       // date
info@54:       // @see http://www.delorie.com/djgpp/doc/rbinter/it/52/13.html
info@54:       // @see http://www.delorie.com/djgpp/doc/rbinter/it/65/16.html
info@54:       // @see http://www.delorie.com/djgpp/doc/rbinter/it/66/16.html
info@54: 
info@54:       dosTime = o.date.getHours();
info@54:       dosTime = dosTime << 6;
info@54:       dosTime = dosTime | o.date.getMinutes();
info@54:       dosTime = dosTime << 5;
info@54:       dosTime = dosTime | o.date.getSeconds() / 2;
info@54: 
info@54:       dosDate = o.date.getFullYear() - 1980;
info@54:       dosDate = dosDate << 4;
info@54:       dosDate = dosDate | (o.date.getMonth() + 1);
info@54:       dosDate = dosDate << 5;
info@54:       dosDate = dosDate | o.date.getDate();
info@54: 
info@54: 
info@54:       var header = "";
info@54: 
info@54:       // version needed to extract
info@54:       header += "\x0A\x00";
info@54:       // general purpose bit flag
info@54:       // set bit 11 if utf8
info@54:       header += useUTF8 ? "\x00\x08" : "\x00\x00";
info@54:       // compression method
info@54:       header += compressedObject.compressionMethod;
info@54:       // last mod file time
info@54:       header += decToHex(dosTime, 2);
info@54:       // last mod file date
info@54:       header += decToHex(dosDate, 2);
info@54:       // crc-32
info@54:       header += decToHex(compressedObject.crc32, 4);
info@54:       // compressed size
info@54:       header += decToHex(compressedObject.compressedSize, 4);
info@54:       // uncompressed size
info@54:       header += decToHex(compressedObject.uncompressedSize, 4);
info@54:       // file name length
info@54:       header += decToHex(utfEncodedFileName.length, 2);
info@54:       // extra field length
info@54:       header += "\x00\x00";
info@54: 
info@54: 
info@54:       var fileRecord = JSZip.signature.LOCAL_FILE_HEADER + header + utfEncodedFileName;
info@54: 
info@54:       var dirRecord = JSZip.signature.CENTRAL_FILE_HEADER +
info@54:       // version made by (00: DOS)
info@54:       "\x14\x00" +
info@54:       // file header (common to file and central directory)
info@54:       header +
info@54:       // file comment length
info@54:       "\x00\x00" +
info@54:       // disk number start
info@54:       "\x00\x00" +
info@54:       // internal file attributes TODO
info@54:       "\x00\x00" +
info@54:       // external file attributes
info@54:       (file.options.dir===true?"\x10\x00\x00\x00":"\x00\x00\x00\x00")+
info@54:       // relative offset of local header
info@54:       decToHex(offset, 4) +
info@54:       // file name
info@54:       utfEncodedFileName;
info@54: 
info@54: 
info@54:       return {
info@54:          fileRecord : fileRecord,
info@54:          dirRecord : dirRecord,
info@54:          compressedObject : compressedObject
info@54:       };
info@54:    };
info@54: 
info@54:    /**
info@54:     * An object to write any content to a string.
info@54:     * @constructor
info@54:     */
info@54:    var StringWriter = function () {
info@54:       this.data = [];
info@54:    };
info@54:    StringWriter.prototype = {
info@54:       /**
info@54:        * Append any content to the current string.
info@54:        * @param {Object} input the content to add.
info@54:        */
info@54:       append : function (input) {
info@54:          input = JSZip.utils.transformTo("string", input);
info@54:          this.data.push(input);
info@54:       },
info@54:       /**
info@54:        * Finalize the construction an return the result.
info@54:        * @return {string} the generated string.
info@54:        */
info@54:       finalize : function () {
info@54:          return this.data.join("");
info@54:       }
info@54:    };
info@54:    /**
info@54:     * An object to write any content to an Uint8Array.
info@54:     * @constructor
info@54:     * @param {number} length The length of the array.
info@54:     */
info@54:    var Uint8ArrayWriter = function (length) {
info@54:       this.data = new Uint8Array(length);
info@54:       this.index = 0;
info@54:    };
info@54:    Uint8ArrayWriter.prototype = {
info@54:       /**
info@54:        * Append any content to the current array.
info@54:        * @param {Object} input the content to add.
info@54:        */
info@54:       append : function (input) {
info@54:          if (input.length !== 0) {
info@54:             // with an empty Uint8Array, Opera fails with a "Offset larger than array size"
info@54:             input = JSZip.utils.transformTo("uint8array", input);
info@54:             this.data.set(input, this.index);
info@54:             this.index += input.length;
info@54:          }
info@54:       },
info@54:       /**
info@54:        * Finalize the construction an return the result.
info@54:        * @return {Uint8Array} the generated array.
info@54:        */
info@54:       finalize : function () {
info@54:          return this.data;
info@54:       }
info@54:    };
info@54: 
info@54:    // return the actual prototype of JSZip
info@54:    return {
info@54:       /**
info@54:        * Read an existing zip and merge the data in the current JSZip object.
info@54:        * The implementation is in jszip-load.js, don't forget to include it.
info@54:        * @param {String|ArrayBuffer|Uint8Array|Buffer} stream  The stream to load
info@54:        * @param {Object} options Options for loading the stream.
info@54:        *  options.base64 : is the stream in base64 ? default : false
info@54:        * @return {JSZip} the current JSZip object
info@54:        */
info@54:       load : function (stream, options) {
info@54:          throw new Error("Load method is not defined. Is the file jszip-load.js included ?");
info@54:       },
info@54: 
info@54:       /**
info@54:        * Filter nested files/folders with the specified function.
info@54:        * @param {Function} search the predicate to use :
info@54:        * function (relativePath, file) {...}
info@54:        * It takes 2 arguments : the relative path and the file.
info@54:        * @return {Array} An array of matching elements.
info@54:        */
info@54:       filter : function (search) {
info@54:          var result = [], filename, relativePath, file, fileClone;
info@54:          for (filename in this.files) {
info@54:             if ( !this.files.hasOwnProperty(filename) ) { continue; }
info@54:             file = this.files[filename];
info@54:             // return a new object, don't let the user mess with our internal objects :)
info@54:             fileClone = new ZipObject(file.name, file._data, extend(file.options));
info@54:             relativePath = filename.slice(this.root.length, filename.length);
info@54:             if (filename.slice(0, this.root.length) === this.root && // the file is in the current root
info@54:                 search(relativePath, fileClone)) { // and the file matches the function
info@54:                result.push(fileClone);
info@54:             }
info@54:          }
info@54:          return result;
info@54:       },
info@54: 
info@54:       /**
info@54:        * Add a file to the zip file, or search a file.
info@54:        * @param   {string|RegExp} name The name of the file to add (if data is defined),
info@54:        * the name of the file to find (if no data) or a regex to match files.
info@54:        * @param   {String|ArrayBuffer|Uint8Array|Buffer} data  The file data, either raw or base64 encoded
info@54:        * @param   {Object} o     File options
info@54:        * @return  {JSZip|Object|Array} this JSZip object (when adding a file),
info@54:        * a file (when searching by string) or an array of files (when searching by regex).
info@54:        */
info@54:       file : function(name, data, o) {
info@54:          if (arguments.length === 1) {
info@54:             if (JSZip.utils.isRegExp(name)) {
info@54:                var regexp = name;
info@54:                return this.filter(function(relativePath, file) {
info@54:                   return !file.options.dir && regexp.test(relativePath);
info@54:                });
info@54:             } else { // text
info@54:                return this.filter(function (relativePath, file) {
info@54:                   return !file.options.dir && relativePath === name;
info@54:                })[0]||null;
info@54:             }
info@54:          } else { // more than one argument : we have data !
info@54:             name = this.root+name;
info@54:             fileAdd.call(this, name, data, o);
info@54:          }
info@54:          return this;
info@54:       },
info@54: 
info@54:       /**
info@54:        * Add a directory to the zip file, or search.
info@54:        * @param   {String|RegExp} arg The name of the directory to add, or a regex to search folders.
info@54:        * @return  {JSZip} an object with the new directory as the root, or an array containing matching folders.
info@54:        */
info@54:       folder : function(arg) {
info@54:          if (!arg) {
info@54:             return this;
info@54:          }
info@54: 
info@54:          if (JSZip.utils.isRegExp(arg)) {
info@54:             return this.filter(function(relativePath, file) {
info@54:                return file.options.dir && arg.test(relativePath);
info@54:             });
info@54:          }
info@54: 
info@54:          // else, name is a new folder
info@54:          var name = this.root + arg;
info@54:          var newFolder = folderAdd.call(this, name);
info@54: 
info@54:          // Allow chaining by returning a new object with this folder as the root
info@54:          var ret = this.clone();
info@54:          ret.root = newFolder.name;
info@54:          return ret;
info@54:       },
info@54: 
info@54:       /**
info@54:        * Delete a file, or a directory and all sub-files, from the zip
info@54:        * @param {string} name the name of the file to delete
info@54:        * @return {JSZip} this JSZip object
info@54:        */
info@54:       remove : function(name) {
info@54:          name = this.root + name;
info@54:          var file = this.files[name];
info@54:          if (!file) {
info@54:             // Look for any folders
info@54:             if (name.slice(-1) != "/") {
info@54:                name += "/";
info@54:             }
info@54:             file = this.files[name];
info@54:          }
info@54: 
info@54:          if (file) {
info@54:             if (!file.options.dir) {
info@54:                // file
info@54:                delete this.files[name];
info@54:             } else {
info@54:                // folder
info@54:                var kids = this.filter(function (relativePath, file) {
info@54:                   return file.name.slice(0, name.length) === name;
info@54:                });
info@54:                for (var i = 0; i < kids.length; i++) {
info@54:                   delete this.files[kids[i].name];
info@54:                }
info@54:             }
info@54:          }
info@54: 
info@54:          return this;
info@54:       },
info@54: 
info@54:       /**
info@54:        * Generate the complete zip file
info@54:        * @param {Object} options the options to generate the zip file :
info@54:        * - base64, (deprecated, use type instead) true to generate base64.
info@54:        * - compression, "STORE" by default.
info@54:        * - type, "base64" by default. Values are : string, base64, uint8array, arraybuffer, blob.
info@54:        * @return {String|Uint8Array|ArrayBuffer|Buffer|Blob} the zip file
info@54:        */
info@54:       generate : function(options) {
info@54:          options = extend(options || {}, {
info@54:             base64 : true,
info@54:             compression : "STORE",
info@54:             type : "base64"
info@54:          });
info@54: 
info@54:          JSZip.utils.checkSupport(options.type);
info@54: 
info@54:          var zipData = [], localDirLength = 0, centralDirLength = 0, writer, i;
info@54: 
info@54: 
info@54:          // first, generate all the zip parts.
info@54:          for (var name in this.files) {
info@54:             if ( !this.files.hasOwnProperty(name) ) { continue; }
info@54:             var file = this.files[name];
info@54: 
info@54:             var compressionName = file.options.compression || options.compression.toUpperCase();
info@54:             var compression = JSZip.compressions[compressionName];
info@54:             if (!compression) {
info@54:                throw new Error(compressionName + " is not a valid compression method !");
info@54:             }
info@54: 
info@54:             var compressedObject = generateCompressedObjectFrom.call(this, file, compression);
info@54: 
info@54:             var zipPart = generateZipParts.call(this, name, file, compressedObject, localDirLength);
info@54:             localDirLength += zipPart.fileRecord.length + compressedObject.compressedSize;
info@54:             centralDirLength += zipPart.dirRecord.length;
info@54:             zipData.push(zipPart);
info@54:          }
info@54: 
info@54:          var dirEnd = "";
info@54: 
info@54:          // end of central dir signature
info@54:          dirEnd = JSZip.signature.CENTRAL_DIRECTORY_END +
info@54:          // number of this disk
info@54:          "\x00\x00" +
info@54:          // number of the disk with the start of the central directory
info@54:          "\x00\x00" +
info@54:          // total number of entries in the central directory on this disk
info@54:          decToHex(zipData.length, 2) +
info@54:          // total number of entries in the central directory
info@54:          decToHex(zipData.length, 2) +
info@54:          // size of the central directory   4 bytes
info@54:          decToHex(centralDirLength, 4) +
info@54:          // offset of start of central directory with respect to the starting disk number
info@54:          decToHex(localDirLength, 4) +
info@54:          // .ZIP file comment length
info@54:          "\x00\x00";
info@54: 
info@54: 
info@54:          // we have all the parts (and the total length)
info@54:          // time to create a writer !
info@54:          switch(options.type.toLowerCase()) {
info@54:             case "uint8array" :
info@54:             case "arraybuffer" :
info@54:             case "blob" :
info@54:             case "nodebuffer" :
info@54:                writer = new Uint8ArrayWriter(localDirLength + centralDirLength + dirEnd.length);
info@54:                break;
info@54:             // case "base64" :
info@54:             // case "string" :
info@54:             default :
info@54:                writer = new StringWriter(localDirLength + centralDirLength + dirEnd.length);
info@54:                break;
info@54:          }
info@54: 
info@54:          for (i = 0; i < zipData.length; i++) {
info@54:             writer.append(zipData[i].fileRecord);
info@54:             writer.append(zipData[i].compressedObject.compressedContent);
info@54:          }
info@54:          for (i = 0; i < zipData.length; i++) {
info@54:             writer.append(zipData[i].dirRecord);
info@54:          }
info@54: 
info@54:          writer.append(dirEnd);
info@54: 
info@54:          var zip = writer.finalize();
info@54: 
info@54: 
info@54: 
info@54:          switch(options.type.toLowerCase()) {
info@54:             // case "zip is an Uint8Array"
info@54:             case "uint8array" :
info@54:             case "arraybuffer" :
info@54:             case "nodebuffer" :
info@54:                return JSZip.utils.transformTo(options.type.toLowerCase(), zip);
info@54:             case "blob" :
info@54:                return JSZip.utils.arrayBuffer2Blob(JSZip.utils.transformTo("arraybuffer", zip));
info@54: 
info@54:             // case "zip is a string"
info@54:             case "base64" :
info@54:                return (options.base64) ? JSZip.base64.encode(zip) : zip;
info@54:             default : // case "string" :
info@54:                return zip;
info@54:          }
info@54:       },
info@54: 
info@54:       /**
info@54:        *
info@54:        *  Javascript crc32
info@54:        *  http://www.webtoolkit.info/
info@54:        *
info@54:        */
info@54:       crc32 : function crc32(input, crc) {
info@54:          if (typeof input === "undefined" || !input.length) {
info@54:             return 0;
info@54:          }
info@54: 
info@54:          var isArray = JSZip.utils.getTypeOf(input) !== "string";
info@54: 
info@54:          var table = [
info@54:             0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
info@54:             0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
info@54:             0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
info@54:             0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
info@54:             0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
info@54:             0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
info@54:             0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
info@54:             0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
info@54:             0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
info@54:             0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
info@54:             0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
info@54:             0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
info@54:             0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
info@54:             0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
info@54:             0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
info@54:             0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
info@54:             0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
info@54:             0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
info@54:             0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
info@54:             0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
info@54:             0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
info@54:             0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
info@54:             0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
info@54:             0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
info@54:             0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
info@54:             0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
info@54:             0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
info@54:             0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
info@54:             0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
info@54:             0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
info@54:             0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
info@54:             0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
info@54:             0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
info@54:             0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
info@54:             0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
info@54:             0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
info@54:             0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
info@54:             0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
info@54:             0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
info@54:             0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
info@54:             0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
info@54:             0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
info@54:             0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
info@54:             0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
info@54:             0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
info@54:             0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
info@54:             0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
info@54:             0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
info@54:             0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
info@54:             0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
info@54:             0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
info@54:             0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
info@54:             0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
info@54:             0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
info@54:             0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
info@54:             0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
info@54:             0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
info@54:             0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
info@54:             0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
info@54:             0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
info@54:             0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
info@54:             0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
info@54:             0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
info@54:             0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
info@54:          ];
info@54: 
info@54:          if (typeof(crc) == "undefined") { crc = 0; }
info@54:          var x = 0;
info@54:          var y = 0;
info@54:          var byte = 0;
info@54: 
info@54:          crc = crc ^ (-1);
info@54:          for( var i = 0, iTop = input.length; i < iTop; i++ ) {
info@54:             byte = isArray ? input[i] : input.charCodeAt(i);
info@54:             y = ( crc ^ byte ) & 0xFF;
info@54:             x = table[y];
info@54:             crc = ( crc >>> 8 ) ^ x;
info@54:          }
info@54: 
info@54:          return crc ^ (-1);
info@54:       },
info@54: 
info@54:       // Inspired by http://my.opera.com/GreyWyvern/blog/show.dml/1725165
info@54:       clone : function() {
info@54:          var newObj = new JSZip();
info@54:          for (var i in this) {
info@54:             if (typeof this[i] !== "function") {
info@54:                newObj[i] = this[i];
info@54:             }
info@54:          }
info@54:          return newObj;
info@54:       },
info@54: 
info@54: 
info@54:       /**
info@54:        * http://www.webtoolkit.info/javascript-utf8.html
info@54:        */
info@54:       utf8encode : function (string) {
info@54:          // TextEncoder + Uint8Array to binary string is faster than checking every bytes on long strings.
info@54:          // http://jsperf.com/utf8encode-vs-textencoder
info@54:          // On short strings (file names for example), the TextEncoder API is (currently) slower.
info@54:          if (textEncoder) {
info@54:             var u8 = textEncoder.encode(string);
info@54:             return JSZip.utils.transformTo("string", u8);
info@54:          }
info@54:          if (JSZip.support.nodebuffer) {
info@54:             return JSZip.utils.transformTo("string", new Buffer(string, "utf-8"));
info@54:          }
info@54: 
info@54:          // array.join may be slower than string concatenation but generates less objects (less time spent garbage collecting).
info@54:          // See also http://jsperf.com/array-direct-assignment-vs-push/31
info@54:          var result = [], resIndex = 0;
info@54: 
info@54:          for (var n = 0; n < string.length; n++) {
info@54: 
info@54:             var c = string.charCodeAt(n);
info@54: 
info@54:             if (c < 128) {
info@54:                result[resIndex++] = String.fromCharCode(c);
info@54:             } else if ((c > 127) && (c < 2048)) {
info@54:                result[resIndex++] = String.fromCharCode((c >> 6) | 192);
info@54:                result[resIndex++] = String.fromCharCode((c & 63) | 128);
info@54:             } else {
info@54:                result[resIndex++] = String.fromCharCode((c >> 12) | 224);
info@54:                result[resIndex++] = String.fromCharCode(((c >> 6) & 63) | 128);
info@54:                result[resIndex++] = String.fromCharCode((c & 63) | 128);
info@54:             }
info@54: 
info@54:          }
info@54: 
info@54:          return result.join("");
info@54:       },
info@54: 
info@54:       /**
info@54:        * http://www.webtoolkit.info/javascript-utf8.html
info@54:        */
info@54:       utf8decode : function (input) {
info@54:          var result = [], resIndex = 0;
info@54:          var type = JSZip.utils.getTypeOf(input);
info@54:          var isArray = type !== "string";
info@54:          var i = 0;
info@54:          var c = 0, c1 = 0, c2 = 0, c3 = 0;
info@54: 
info@54:          // check if we can use the TextDecoder API
info@54:          // see http://encoding.spec.whatwg.org/#api
info@54:          if (textDecoder) {
info@54:             return textDecoder.decode(
info@54:                JSZip.utils.transformTo("uint8array", input)
info@54:             );
info@54:          }
info@54:          if (JSZip.support.nodebuffer) {
info@54:             return JSZip.utils.transformTo("nodebuffer", input).toString("utf-8");
info@54:          }
info@54: 
info@54:          while ( i < input.length ) {
info@54: 
info@54:             c = isArray ? input[i] : input.charCodeAt(i);
info@54: 
info@54:             if (c < 128) {
info@54:                result[resIndex++] = String.fromCharCode(c);
info@54:                i++;
info@54:             } else if ((c > 191) && (c < 224)) {
info@54:                c2 = isArray ? input[i+1] : input.charCodeAt(i+1);
info@54:                result[resIndex++] = String.fromCharCode(((c & 31) << 6) | (c2 & 63));
info@54:                i += 2;
info@54:             } else {
info@54:                c2 = isArray ? input[i+1] : input.charCodeAt(i+1);
info@54:                c3 = isArray ? input[i+2] : input.charCodeAt(i+2);
info@54:                result[resIndex++] = String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
info@54:                i += 3;
info@54:             }
info@54: 
info@54:          }
info@54: 
info@54:          return result.join("");
info@54:       }
info@54:    };
info@54: }());
info@54: 
info@54: /*
info@54:  * Compression methods
info@54:  * This object is filled in as follow :
info@54:  * name : {
info@54:  *    magic // the 2 bytes indentifying the compression method
info@54:  *    compress // function, take the uncompressed content and return it compressed.
info@54:  *    uncompress // function, take the compressed content and return it uncompressed.
info@54:  *    compressInputType // string, the type accepted by the compress method. null to accept everything.
info@54:  *    uncompressInputType // string, the type accepted by the uncompress method. null to accept everything.
info@54:  * }
info@54:  *
info@54:  * STORE is the default compression method, so it's included in this file.
info@54:  * Other methods should go to separated files : the user wants modularity.
info@54:  */
info@54: JSZip.compressions = {
info@54:    "STORE" : {
info@54:       magic : "\x00\x00",
info@54:       compress : function (content) {
info@54:          return content; // no compression
info@54:       },
info@54:       uncompress : function (content) {
info@54:          return content; // no compression
info@54:       },
info@54:       compressInputType : null,
info@54:       uncompressInputType : null
info@54:    }
info@54: };
info@54: 
info@54: (function () {
info@54:    JSZip.utils = {
info@54:       /**
info@54:        * Convert a string to a "binary string" : a string containing only char codes between 0 and 255.
info@54:        * @param {string} str the string to transform.
info@54:        * @return {String} the binary string.
info@54:        */
info@54:       string2binary : function (str) {
info@54:          var result = "";
info@54:          for (var i = 0; i < str.length; i++) {
info@54:             result += String.fromCharCode(str.charCodeAt(i) & 0xff);
info@54:          }
info@54:          return result;
info@54:       },
info@54:       /**
info@54:        * Create a Uint8Array from the string.
info@54:        * @param {string} str the string to transform.
info@54:        * @return {Uint8Array} the typed array.
info@54:        * @throws {Error} an Error if the browser doesn't support the requested feature.
info@54:        * @deprecated : use JSZip.utils.transformTo instead.
info@54:        */
info@54:       string2Uint8Array : function (str) {
info@54:          return JSZip.utils.transformTo("uint8array", str);
info@54:       },
info@54: 
info@54:       /**
info@54:        * Create a string from the Uint8Array.
info@54:        * @param {Uint8Array} array the array to transform.
info@54:        * @return {string} the string.
info@54:        * @throws {Error} an Error if the browser doesn't support the requested feature.
info@54:        * @deprecated : use JSZip.utils.transformTo instead.
info@54:        */
info@54:       uint8Array2String : function (array) {
info@54:          return JSZip.utils.transformTo("string", array);
info@54:       },
info@54:       /**
info@54:        * Create a blob from the given ArrayBuffer.
info@54:        * @param {ArrayBuffer} buffer the buffer to transform.
info@54:        * @return {Blob} the result.
info@54:        * @throws {Error} an Error if the browser doesn't support the requested feature.
info@54:        */
info@54:       arrayBuffer2Blob : function (buffer) {
info@54:          JSZip.utils.checkSupport("blob");
info@54: 
info@54:          try {
info@54:             // Blob constructor
info@54:             return new Blob([buffer], { type: "application/zip" });
info@54:          }
info@54:          catch(e) {}
info@54: 
info@54:          try {
info@54:             // deprecated, browser only, old way
info@54:             var BlobBuilder = window.BlobBuilder || window.WebKitBlobBuilder || window.MozBlobBuilder || window.MSBlobBuilder;
info@54:             var builder = new BlobBuilder();
info@54:             builder.append(buffer);
info@54:             return builder.getBlob('application/zip');
info@54:          }
info@54:          catch(e) {}
info@54: 
info@54:          // well, fuck ?!
info@54:          throw new Error("Bug : can't construct the Blob.");
info@54:       },
info@54:       /**
info@54:        * Create a blob from the given string.
info@54:        * @param {string} str the string to transform.
info@54:        * @return {Blob} the result.
info@54:        * @throws {Error} an Error if the browser doesn't support the requested feature.
info@54:        */
info@54:       string2Blob : function (str) {
info@54:          var buffer = JSZip.utils.transformTo("arraybuffer", str);
info@54:          return JSZip.utils.arrayBuffer2Blob(buffer);
info@54:       }
info@54:    };
info@54: 
info@54:    /**
info@54:     * The identity function.
info@54:     * @param {Object} input the input.
info@54:     * @return {Object} the same input.
info@54:     */
info@54:    function identity(input) {
info@54:       return input;
info@54:    }
info@54: 
info@54:    /**
info@54:     * Fill in an array with a string.
info@54:     * @param {String} str the string to use.
info@54:     * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to fill in (will be mutated).
info@54:     * @return {Array|ArrayBuffer|Uint8Array|Buffer} the updated array.
info@54:     */
info@54:    function stringToArrayLike(str, array) {
info@54:       for (var i = 0; i < str.length; ++i) {
info@54:          array[i] = str.charCodeAt(i) & 0xFF;
info@54:       }
info@54:       return array;
info@54:    }
info@54: 
info@54:    /**
info@54:     * Transform an array-like object to a string.
info@54:     * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to transform.
info@54:     * @return {String} the result.
info@54:     */
info@54:    function arrayLikeToString(array) {
info@54:       // Performances notes :
info@54:       // --------------------
info@54:       // String.fromCharCode.apply(null, array) is the fastest, see
info@54:       // see http://jsperf.com/converting-a-uint8array-to-a-string/2
info@54:       // but the stack is limited (and we can get huge arrays !).
info@54:       //
info@54:       // result += String.fromCharCode(array[i]); generate too many strings !
info@54:       //
info@54:       // This code is inspired by http://jsperf.com/arraybuffer-to-string-apply-performance/2
info@54:       var chunk = 65536;
info@54:       var result = [], len = array.length, type = JSZip.utils.getTypeOf(array), k = 0;
info@54: 
info@54:       var canUseApply = true;
info@54:       try {
info@54:          switch(type) {
info@54:             case "uint8array":
info@54:                String.fromCharCode.apply(null, new Uint8Array(0));
info@54:                break;
info@54:             case "nodebuffer":
info@54:                String.fromCharCode.apply(null, new Buffer(0));
info@54:                break;
info@54:          }
info@54:       } catch(e) {
info@54:          canUseApply = false;
info@54:       }
info@54: 
info@54:       // no apply : slow and painful algorithm
info@54:       // default browser on android 4.*
info@54:       if (!canUseApply) {
info@54:          var resultStr = "";
info@54:          for(var i = 0; i < array.length;i++) {
info@54:             resultStr += String.fromCharCode(array[i]);
info@54:          }
info@54:          return resultStr;
info@54:       }
info@54: 
info@54:       while (k < len && chunk > 1) {
info@54:          try {
info@54:             if (type === "array" || type === "nodebuffer") {
info@54:                result.push(String.fromCharCode.apply(null, array.slice(k, Math.min(k + chunk, len))));
info@54:             } else {
info@54:                result.push(String.fromCharCode.apply(null, array.subarray(k, Math.min(k + chunk, len))));
info@54:             }
info@54:             k += chunk;
info@54:          } catch (e) {
info@54:             chunk = Math.floor(chunk / 2);
info@54:          }
info@54:       }
info@54:       return result.join("");
info@54:    }
info@54: 
info@54:    /**
info@54:     * Copy the data from an array-like to an other array-like.
info@54:     * @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayFrom the origin array.
info@54:     * @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayTo the destination array which will be mutated.
info@54:     * @return {Array|ArrayBuffer|Uint8Array|Buffer} the updated destination array.
info@54:     */
info@54:    function arrayLikeToArrayLike(arrayFrom, arrayTo) {
info@54:       for(var i = 0; i < arrayFrom.length; i++) {
info@54:          arrayTo[i] = arrayFrom[i];
info@54:       }
info@54:       return arrayTo;
info@54:    }
info@54: 
info@54:    // a matrix containing functions to transform everything into everything.
info@54:    var transform = {};
info@54: 
info@54:    // string to ?
info@54:    transform["string"] = {
info@54:       "string" : identity,
info@54:       "array" : function (input) {
info@54:          return stringToArrayLike(input, new Array(input.length));
info@54:       },
info@54:       "arraybuffer" : function (input) {
info@54:          return transform["string"]["uint8array"](input).buffer;
info@54:       },
info@54:       "uint8array" : function (input) {
info@54:          return stringToArrayLike(input, new Uint8Array(input.length));
info@54:       },
info@54:       "nodebuffer" : function (input) {
info@54:          return stringToArrayLike(input, new Buffer(input.length));
info@54:       }
info@54:    };
info@54: 
info@54:    // array to ?
info@54:    transform["array"] = {
info@54:       "string" : arrayLikeToString,
info@54:       "array" : identity,
info@54:       "arraybuffer" : function (input) {
info@54:          return (new Uint8Array(input)).buffer;
info@54:       },
info@54:       "uint8array" : function (input) {
info@54:          return new Uint8Array(input);
info@54:       },
info@54:       "nodebuffer" : function (input) {
info@54:          return new Buffer(input);
info@54:       }
info@54:    };
info@54: 
info@54:    // arraybuffer to ?
info@54:    transform["arraybuffer"] = {
info@54:       "string" : function (input) {
info@54:          return arrayLikeToString(new Uint8Array(input));
info@54:       },
info@54:       "array" : function (input) {
info@54:          return arrayLikeToArrayLike(new Uint8Array(input), new Array(input.byteLength));
info@54:       },
info@54:       "arraybuffer" : identity,
info@54:       "uint8array" : function (input) {
info@54:          return new Uint8Array(input);
info@54:       },
info@54:       "nodebuffer" : function (input) {
info@54:          return new Buffer(new Uint8Array(input));
info@54:       }
info@54:    };
info@54: 
info@54:    // uint8array to ?
info@54:    transform["uint8array"] = {
info@54:       "string" : arrayLikeToString,
info@54:       "array" : function (input) {
info@54:          return arrayLikeToArrayLike(input, new Array(input.length));
info@54:       },
info@54:       "arraybuffer" : function (input) {
info@54:          return input.buffer;
info@54:       },
info@54:       "uint8array" : identity,
info@54:       "nodebuffer" : function(input) {
info@54:          return new Buffer(input);
info@54:       }
info@54:    };
info@54: 
info@54:    // nodebuffer to ?
info@54:    transform["nodebuffer"] = {
info@54:       "string" : arrayLikeToString,
info@54:       "array" : function (input) {
info@54:          return arrayLikeToArrayLike(input, new Array(input.length));
info@54:       },
info@54:       "arraybuffer" : function (input) {
info@54:          return transform["nodebuffer"]["uint8array"](input).buffer;
info@54:       },
info@54:       "uint8array" : function (input) {
info@54:          return arrayLikeToArrayLike(input, new Uint8Array(input.length));
info@54:       },
info@54:       "nodebuffer" : identity
info@54:    };
info@54: 
info@54:    /**
info@54:     * Transform an input into any type.
info@54:     * The supported output type are : string, array, uint8array, arraybuffer, nodebuffer.
info@54:     * If no output type is specified, the unmodified input will be returned.
info@54:     * @param {String} outputType the output type.
info@54:     * @param {String|Array|ArrayBuffer|Uint8Array|Buffer} input the input to convert.
info@54:     * @throws {Error} an Error if the browser doesn't support the requested output type.
info@54:     */
info@54:    JSZip.utils.transformTo = function (outputType, input) {
info@54:       if (!input) {
info@54:          // undefined, null, etc
info@54:          // an empty string won't harm.
info@54:          input = "";
info@54:       }
info@54:       if (!outputType) {
info@54:          return input;
info@54:       }
info@54:       JSZip.utils.checkSupport(outputType);
info@54:       var inputType = JSZip.utils.getTypeOf(input);
info@54:       var result = transform[inputType][outputType](input);
info@54:       return result;
info@54:    };
info@54: 
info@54:    /**
info@54:     * Return the type of the input.
info@54:     * The type will be in a format valid for JSZip.utils.transformTo : string, array, uint8array, arraybuffer.
info@54:     * @param {Object} input the input to identify.
info@54:     * @return {String} the (lowercase) type of the input.
info@54:     */
info@54:    JSZip.utils.getTypeOf = function (input) {
info@54:       if (typeof input === "string") {
info@54:          return "string";
info@54:       }
info@54:       if (Object.prototype.toString.call(input) === "[object Array]") {
info@54:          return "array";
info@54:       }
info@54:       if (JSZip.support.nodebuffer && Buffer.isBuffer(input)) {
info@54:          return "nodebuffer";
info@54:       }
info@54:       if (JSZip.support.uint8array && input instanceof Uint8Array) {
info@54:          return "uint8array";
info@54:       }
info@54:       if (JSZip.support.arraybuffer && input instanceof ArrayBuffer) {
info@54:          return "arraybuffer";
info@54:       }
info@54:    };
info@54: 
info@54:    /**
info@54:     * Cross-window, cross-Node-context regular expression detection
info@54:     * @param  {Object}  object Anything
info@54:     * @return {Boolean}        true if the object is a regular expression,
info@54:     * false otherwise
info@54:     */
info@54:    JSZip.utils.isRegExp = function (object) {
info@54:       return Object.prototype.toString.call(object) === "[object RegExp]";
info@54:    };
info@54: 
info@54:    /**
info@54:     * Throw an exception if the type is not supported.
info@54:     * @param {String} type the type to check.
info@54:     * @throws {Error} an Error if the browser doesn't support the requested type.
info@54:     */
info@54:    JSZip.utils.checkSupport = function (type) {
info@54:       var supported = true;
info@54:       switch (type.toLowerCase()) {
info@54:          case "uint8array":
info@54:             supported = JSZip.support.uint8array;
info@54:          break;
info@54:          case "arraybuffer":
info@54:             supported = JSZip.support.arraybuffer;
info@54:          break;
info@54:          case "nodebuffer":
info@54:             supported = JSZip.support.nodebuffer;
info@54:          break;
info@54:          case "blob":
info@54:             supported = JSZip.support.blob;
info@54:          break;
info@54:       }
info@54:       if (!supported) {
info@54:          throw new Error(type + " is not supported by this browser");
info@54:       }
info@54:    };
info@54: 
info@54: 
info@54: })();
info@54: 
info@54: (function (){
info@54:    /**
info@54:     * Represents an entry in the zip.
info@54:     * The content may or may not be compressed.
info@54:     * @constructor
info@54:     */
info@54:    JSZip.CompressedObject = function () {
info@54:          this.compressedSize = 0;
info@54:          this.uncompressedSize = 0;
info@54:          this.crc32 = 0;
info@54:          this.compressionMethod = null;
info@54:          this.compressedContent = null;
info@54:    };
info@54: 
info@54:    JSZip.CompressedObject.prototype = {
info@54:       /**
info@54:        * Return the decompressed content in an unspecified format.
info@54:        * The format will depend on the decompressor.
info@54:        * @return {Object} the decompressed content.
info@54:        */
info@54:       getContent : function () {
info@54:          return null; // see implementation
info@54:       },
info@54:       /**
info@54:        * Return the compressed content in an unspecified format.
info@54:        * The format will depend on the compressed conten source.
info@54:        * @return {Object} the compressed content.
info@54:        */
info@54:       getCompressedContent : function () {
info@54:          return null; // see implementation
info@54:       }
info@54:    };
info@54: })();
info@54: 
info@54: /**
info@54:  *
info@54:  *  Base64 encode / decode
info@54:  *  http://www.webtoolkit.info/
info@54:  *
info@54:  *  Hacked so that it doesn't utf8 en/decode everything
info@54:  **/
info@54: JSZip.base64 = (function() {
info@54:    // private property
info@54:    var _keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
info@54: 
info@54:    return {
info@54:       // public method for encoding
info@54:       encode : function(input, utf8) {
info@54:          var output = "";
info@54:          var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
info@54:          var i = 0;
info@54: 
info@54:          while (i < input.length) {
info@54: 
info@54:             chr1 = input.charCodeAt(i++);
info@54:             chr2 = input.charCodeAt(i++);
info@54:             chr3 = input.charCodeAt(i++);
info@54: 
info@54:             enc1 = chr1 >> 2;
info@54:             enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
info@54:             enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
info@54:             enc4 = chr3 & 63;
info@54: 
info@54:             if (isNaN(chr2)) {
info@54:                enc3 = enc4 = 64;
info@54:             } else if (isNaN(chr3)) {
info@54:                enc4 = 64;
info@54:             }
info@54: 
info@54:             output = output +
info@54:                _keyStr.charAt(enc1) + _keyStr.charAt(enc2) +
info@54:                _keyStr.charAt(enc3) + _keyStr.charAt(enc4);
info@54: 
info@54:          }
info@54: 
info@54:          return output;
info@54:       },
info@54: 
info@54:       // public method for decoding
info@54:       decode : function(input, utf8) {
info@54:          var output = "";
info@54:          var chr1, chr2, chr3;
info@54:          var enc1, enc2, enc3, enc4;
info@54:          var i = 0;
info@54: 
info@54:          input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
info@54: 
info@54:          while (i < input.length) {
info@54: 
info@54:             enc1 = _keyStr.indexOf(input.charAt(i++));
info@54:             enc2 = _keyStr.indexOf(input.charAt(i++));
info@54:             enc3 = _keyStr.indexOf(input.charAt(i++));
info@54:             enc4 = _keyStr.indexOf(input.charAt(i++));
info@54: 
info@54:             chr1 = (enc1 << 2) | (enc2 >> 4);
info@54:             chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
info@54:             chr3 = ((enc3 & 3) << 6) | enc4;
info@54: 
info@54:             output = output + String.fromCharCode(chr1);
info@54: 
info@54:             if (enc3 != 64) {
info@54:                output = output + String.fromCharCode(chr2);
info@54:             }
info@54:             if (enc4 != 64) {
info@54:                output = output + String.fromCharCode(chr3);
info@54:             }
info@54: 
info@54:          }
info@54: 
info@54:          return output;
info@54: 
info@54:       }
info@54:    };
info@54: }());
info@54: 
info@54: // enforcing Stuk's coding style
info@54: // vim: set shiftwidth=3 softtabstop=3: