2316 lines
95 KiB
JavaScript
2316 lines
95 KiB
JavaScript
/**
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JSZip - A Javascript class for generating and reading zip files
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<http://stuartk.com/jszip>
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(c) 2009-2012 Stuart Knightley <stuart [at] stuartk.com>
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Dual licenced under the MIT license or GPLv3. See LICENSE.markdown.
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Usage:
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zip = new JSZip();
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zip.file("hello.txt", "Hello, World!").file("tempfile", "nothing");
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zip.folder("images").file("smile.gif", base64Data, {base64: true});
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zip.file("Xmas.txt", "Ho ho ho !", {date : new Date("December 25, 2007 00:00:01")});
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zip.remove("tempfile");
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base64zip = zip.generate();
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**/
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// We use strict, but it should not be placed outside of a function because
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// the environment is shared inside the browser.
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// "use strict";
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/**
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* Representation a of zip file in js
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* @constructor
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* @param {String=|ArrayBuffer=|Uint8Array=|Buffer=} data the data to load, if any (optional).
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* @param {Object=} options the options for creating this objects (optional).
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*/
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var JSZip = function(data, options) {
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// object containing the files :
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// {
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// "folder/" : {...},
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// "folder/data.txt" : {...}
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// }
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this.files = {};
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// Where we are in the hierarchy
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this.root = "";
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if (data) {
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this.load(data, options);
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}
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};
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JSZip.signature = {
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LOCAL_FILE_HEADER: "\x50\x4b\x03\x04",
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CENTRAL_FILE_HEADER: "\x50\x4b\x01\x02",
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CENTRAL_DIRECTORY_END: "\x50\x4b\x05\x06",
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ZIP64_CENTRAL_DIRECTORY_LOCATOR: "\x50\x4b\x06\x07",
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ZIP64_CENTRAL_DIRECTORY_END: "\x50\x4b\x06\x06",
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DATA_DESCRIPTOR: "\x50\x4b\x07\x08"
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};
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// Default properties for a new file
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JSZip.defaults = {
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base64: false,
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binary: false,
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dir: false,
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date: null,
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compression: null
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};
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/*
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* List features that require a modern browser, and if the current browser support them.
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*/
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JSZip.support = {
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// contains true if JSZip can read/generate ArrayBuffer, false otherwise.
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arraybuffer : (function(){
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return typeof ArrayBuffer !== "undefined" && typeof Uint8Array !== "undefined";
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})(),
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// contains true if JSZip can read/generate nodejs Buffer, false otherwise.
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nodebuffer : (function(){
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return typeof Buffer !== "undefined";
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})(),
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// contains true if JSZip can read/generate Uint8Array, false otherwise.
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uint8array : (function(){
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return typeof Uint8Array !== "undefined";
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})(),
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// contains true if JSZip can read/generate Blob, false otherwise.
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blob : (function(){
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// the spec started with BlobBuilder then replaced it with a construtor for Blob.
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// Result : we have browsers that :
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// * know the BlobBuilder (but with prefix)
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// * know the Blob constructor
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// * know about Blob but not about how to build them
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// About the "=== 0" test : if given the wrong type, it may be converted to a string.
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// Instead of an empty content, we will get "[object Uint8Array]" for example.
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if (typeof ArrayBuffer === "undefined") {
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return false;
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}
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var buffer = new ArrayBuffer(0);
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try {
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return new Blob([buffer], { type: "application/zip" }).size === 0;
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}
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catch(e) {}
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try {
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var BlobBuilder = window.BlobBuilder || window.WebKitBlobBuilder || window.MozBlobBuilder || window.MSBlobBuilder;
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var builder = new BlobBuilder();
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builder.append(buffer);
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return builder.getBlob('application/zip').size === 0;
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}
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catch(e) {}
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return false;
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})()
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};
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JSZip.prototype = (function () {
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var textEncoder, textDecoder;
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if (
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JSZip.support.uint8array &&
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typeof TextEncoder === "function" &&
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typeof TextDecoder === "function"
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) {
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textEncoder = new TextEncoder("utf-8");
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textDecoder = new TextDecoder("utf-8");
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}
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/**
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* Returns the raw data of a ZipObject, decompress the content if necessary.
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* @param {ZipObject} file the file to use.
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* @return {String|ArrayBuffer|Uint8Array|Buffer} the data.
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*/
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var getRawData = function (file) {
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if (file._data instanceof JSZip.CompressedObject) {
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file._data = file._data.getContent();
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file.options.binary = true;
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file.options.base64 = false;
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if (JSZip.utils.getTypeOf(file._data) === "uint8array") {
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var copy = file._data;
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// when reading an arraybuffer, the CompressedObject mechanism will keep it and subarray() a Uint8Array.
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// if we request a file in the same format, we might get the same Uint8Array or its ArrayBuffer (the original zip file).
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file._data = new Uint8Array(copy.length);
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// with an empty Uint8Array, Opera fails with a "Offset larger than array size"
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if (copy.length !== 0) {
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file._data.set(copy, 0);
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}
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}
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}
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return file._data;
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};
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/**
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* Returns the data of a ZipObject in a binary form. If the content is an unicode string, encode it.
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* @param {ZipObject} file the file to use.
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* @return {String|ArrayBuffer|Uint8Array|Buffer} the data.
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*/
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var getBinaryData = function (file) {
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var result = getRawData(file), type = JSZip.utils.getTypeOf(result);
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if (type === "string") {
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if (!file.options.binary) {
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// unicode text !
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// unicode string => binary string is a painful process, check if we can avoid it.
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if (textEncoder) {
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return textEncoder.encode(result);
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}
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if (JSZip.support.nodebuffer) {
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return new Buffer(result, "utf-8");
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}
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}
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return file.asBinary();
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}
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return result;
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};
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/**
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* Transform this._data into a string.
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* @param {function} filter a function String -> String, applied if not null on the result.
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* @return {String} the string representing this._data.
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*/
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var dataToString = function (asUTF8) {
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var result = getRawData(this);
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if (result === null || typeof result === "undefined") {
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return "";
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}
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// if the data is a base64 string, we decode it before checking the encoding !
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if (this.options.base64) {
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result = JSZip.base64.decode(result);
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}
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if (asUTF8 && this.options.binary) {
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// JSZip.prototype.utf8decode supports arrays as input
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// skip to array => string step, utf8decode will do it.
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result = JSZip.prototype.utf8decode(result);
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} else {
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// no utf8 transformation, do the array => string step.
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result = JSZip.utils.transformTo("string", result);
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}
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if (!asUTF8 && !this.options.binary) {
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result = JSZip.prototype.utf8encode(result);
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}
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return result;
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};
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/**
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* A simple object representing a file in the zip file.
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* @constructor
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* @param {string} name the name of the file
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* @param {String|ArrayBuffer|Uint8Array|Buffer} data the data
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* @param {Object} options the options of the file
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*/
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var ZipObject = function (name, data, options) {
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this.name = name;
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this._data = data;
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this.options = options;
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};
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ZipObject.prototype = {
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/**
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* Return the content as UTF8 string.
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* @return {string} the UTF8 string.
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*/
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asText : function () {
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return dataToString.call(this, true);
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},
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/**
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* Returns the binary content.
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* @return {string} the content as binary.
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*/
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asBinary : function () {
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return dataToString.call(this, false);
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},
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/**
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* Returns the content as a nodejs Buffer.
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* @return {Buffer} the content as a Buffer.
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*/
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asNodeBuffer : function () {
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var result = getBinaryData(this);
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return JSZip.utils.transformTo("nodebuffer", result);
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},
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/**
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* Returns the content as an Uint8Array.
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* @return {Uint8Array} the content as an Uint8Array.
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*/
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asUint8Array : function () {
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var result = getBinaryData(this);
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return JSZip.utils.transformTo("uint8array", result);
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},
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/**
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* Returns the content as an ArrayBuffer.
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* @return {ArrayBuffer} the content as an ArrayBufer.
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*/
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asArrayBuffer : function () {
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return this.asUint8Array().buffer;
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}
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};
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/**
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* Transform an integer into a string in hexadecimal.
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* @private
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* @param {number} dec the number to convert.
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* @param {number} bytes the number of bytes to generate.
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* @returns {string} the result.
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*/
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var decToHex = function(dec, bytes) {
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var hex = "", i;
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for(i = 0; i < bytes; i++) {
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hex += String.fromCharCode(dec&0xff);
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dec=dec>>>8;
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}
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return hex;
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};
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/**
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* Merge the objects passed as parameters into a new one.
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* @private
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* @param {...Object} var_args All objects to merge.
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* @return {Object} a new object with the data of the others.
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*/
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var extend = function () {
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var result = {}, i, attr;
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for (i = 0; i < arguments.length; i++) { // arguments is not enumerable in some browsers
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for (attr in arguments[i]) {
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if (arguments[i].hasOwnProperty(attr) && typeof result[attr] === "undefined") {
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result[attr] = arguments[i][attr];
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}
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}
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}
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return result;
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};
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/**
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* Transforms the (incomplete) options from the user into the complete
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* set of options to create a file.
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* @private
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* @param {Object} o the options from the user.
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* @return {Object} the complete set of options.
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*/
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var prepareFileAttrs = function (o) {
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o = o || {};
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/*jshint -W041 */
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if (o.base64 === true && o.binary == null) {
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o.binary = true;
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}
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/*jshint +W041 */
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o = extend(o, JSZip.defaults);
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o.date = o.date || new Date();
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if (o.compression !== null) o.compression = o.compression.toUpperCase();
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return o;
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};
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/**
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* Add a file in the current folder.
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* @private
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* @param {string} name the name of the file
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* @param {String|ArrayBuffer|Uint8Array|Buffer} data the data of the file
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* @param {Object} o the options of the file
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* @return {Object} the new file.
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*/
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var fileAdd = function (name, data, o) {
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// be sure sub folders exist
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var parent = parentFolder(name), dataType = JSZip.utils.getTypeOf(data);
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if (parent) {
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folderAdd.call(this, parent);
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}
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o = prepareFileAttrs(o);
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if (o.dir || data === null || typeof data === "undefined") {
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o.base64 = false;
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o.binary = false;
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data = null;
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} else if (dataType === "string") {
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if (o.binary && !o.base64) {
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// optimizedBinaryString == true means that the file has already been filtered with a 0xFF mask
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if (o.optimizedBinaryString !== true) {
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// this is a string, not in a base64 format.
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// Be sure that this is a correct "binary string"
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data = JSZip.utils.string2binary(data);
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}
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}
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} else { // arraybuffer, uint8array, ...
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o.base64 = false;
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o.binary = true;
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if (!dataType && !(data instanceof JSZip.CompressedObject)) {
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throw new Error("The data of '" + name + "' is in an unsupported format !");
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}
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// special case : it's way easier to work with Uint8Array than with ArrayBuffer
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if (dataType === "arraybuffer") {
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data = JSZip.utils.transformTo("uint8array", data);
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}
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}
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var object = new ZipObject(name, data, o);
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this.files[name] = object;
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return object;
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};
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/**
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* Find the parent folder of the path.
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* @private
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* @param {string} path the path to use
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* @return {string} the parent folder, or ""
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*/
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var parentFolder = function (path) {
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if (path.slice(-1) == '/') {
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path = path.substring(0, path.length - 1);
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}
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var lastSlash = path.lastIndexOf('/');
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return (lastSlash > 0) ? path.substring(0, lastSlash) : "";
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};
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/**
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* Add a (sub) folder in the current folder.
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* @private
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* @param {string} name the folder's name
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* @return {Object} the new folder.
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*/
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var folderAdd = function (name) {
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// Check the name ends with a /
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if (name.slice(-1) != "/") {
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name += "/"; // IE doesn't like substr(-1)
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}
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// Does this folder already exist?
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if (!this.files[name]) {
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fileAdd.call(this, name, null, {dir:true});
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}
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return this.files[name];
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};
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/**
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* Generate a JSZip.CompressedObject for a given zipOject.
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* @param {ZipObject} file the object to read.
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* @param {JSZip.compression} compression the compression to use.
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* @return {JSZip.CompressedObject} the compressed result.
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*/
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var generateCompressedObjectFrom = function (file, compression) {
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var result = new JSZip.CompressedObject(), content;
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// the data has not been decompressed, we might reuse things !
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if (file._data instanceof JSZip.CompressedObject) {
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result.uncompressedSize = file._data.uncompressedSize;
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result.crc32 = file._data.crc32;
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if (result.uncompressedSize === 0 || file.options.dir) {
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compression = JSZip.compressions['STORE'];
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result.compressedContent = "";
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result.crc32 = 0;
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} else if (file._data.compressionMethod === compression.magic) {
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result.compressedContent = file._data.getCompressedContent();
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} else {
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content = file._data.getContent();
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// need to decompress / recompress
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result.compressedContent = compression.compress(JSZip.utils.transformTo(compression.compressInputType, content));
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}
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} else {
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// have uncompressed data
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content = getBinaryData(file);
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if (!content || content.length === 0 || file.options.dir) {
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compression = JSZip.compressions['STORE'];
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content = "";
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}
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result.uncompressedSize = content.length;
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result.crc32 = this.crc32(content);
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result.compressedContent = compression.compress(JSZip.utils.transformTo(compression.compressInputType, content));
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}
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result.compressedSize = result.compressedContent.length;
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result.compressionMethod = compression.magic;
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return result;
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};
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/**
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* Generate the various parts used in the construction of the final zip file.
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* @param {string} name the file name.
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* @param {ZipObject} file the file content.
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* @param {JSZip.CompressedObject} compressedObject the compressed object.
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* @param {number} offset the current offset from the start of the zip file.
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* @return {object} the zip parts.
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*/
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var generateZipParts = function(name, file, compressedObject, offset) {
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var data = compressedObject.compressedContent,
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utfEncodedFileName = this.utf8encode(file.name),
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useUTF8 = utfEncodedFileName !== file.name,
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o = file.options,
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dosTime,
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dosDate;
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// date
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// @see http://www.delorie.com/djgpp/doc/rbinter/it/52/13.html
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// @see http://www.delorie.com/djgpp/doc/rbinter/it/65/16.html
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// @see http://www.delorie.com/djgpp/doc/rbinter/it/66/16.html
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dosTime = o.date.getHours();
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dosTime = dosTime << 6;
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dosTime = dosTime | o.date.getMinutes();
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dosTime = dosTime << 5;
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dosTime = dosTime | o.date.getSeconds() / 2;
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dosDate = o.date.getFullYear() - 1980;
|
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dosDate = dosDate << 4;
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dosDate = dosDate | (o.date.getMonth() + 1);
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dosDate = dosDate << 5;
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dosDate = dosDate | o.date.getDate();
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var header = "";
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// version needed to extract
|
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header += "\x0A\x00";
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// general purpose bit flag
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// set bit 11 if utf8
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header += useUTF8 ? "\x00\x08" : "\x00\x00";
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// compression method
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header += compressedObject.compressionMethod;
|
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// last mod file time
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header += decToHex(dosTime, 2);
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// last mod file date
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header += decToHex(dosDate, 2);
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// crc-32
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header += decToHex(compressedObject.crc32, 4);
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// compressed size
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header += decToHex(compressedObject.compressedSize, 4);
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// uncompressed size
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header += decToHex(compressedObject.uncompressedSize, 4);
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// file name length
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header += decToHex(utfEncodedFileName.length, 2);
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// extra field length
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header += "\x00\x00";
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var fileRecord = JSZip.signature.LOCAL_FILE_HEADER + header + utfEncodedFileName;
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var dirRecord = JSZip.signature.CENTRAL_FILE_HEADER +
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// version made by (00: DOS)
|
|
"\x14\x00" +
|
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// file header (common to file and central directory)
|
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header +
|
|
// file comment length
|
|
"\x00\x00" +
|
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// disk number start
|
|
"\x00\x00" +
|
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// internal file attributes TODO
|
|
"\x00\x00" +
|
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// external file attributes
|
|
(file.options.dir===true?"\x10\x00\x00\x00":"\x00\x00\x00\x00")+
|
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// relative offset of local header
|
|
decToHex(offset, 4) +
|
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// file name
|
|
utfEncodedFileName;
|
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|
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return {
|
|
fileRecord : fileRecord,
|
|
dirRecord : dirRecord,
|
|
compressedObject : compressedObject
|
|
};
|
|
};
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|
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/**
|
|
* An object to write any content to a string.
|
|
* @constructor
|
|
*/
|
|
var StringWriter = function () {
|
|
this.data = [];
|
|
};
|
|
StringWriter.prototype = {
|
|
/**
|
|
* Append any content to the current string.
|
|
* @param {Object} input the content to add.
|
|
*/
|
|
append : function (input) {
|
|
input = JSZip.utils.transformTo("string", input);
|
|
this.data.push(input);
|
|
},
|
|
/**
|
|
* Finalize the construction an return the result.
|
|
* @return {string} the generated string.
|
|
*/
|
|
finalize : function () {
|
|
return this.data.join("");
|
|
}
|
|
};
|
|
/**
|
|
* An object to write any content to an Uint8Array.
|
|
* @constructor
|
|
* @param {number} length The length of the array.
|
|
*/
|
|
var Uint8ArrayWriter = function (length) {
|
|
this.data = new Uint8Array(length);
|
|
this.index = 0;
|
|
};
|
|
Uint8ArrayWriter.prototype = {
|
|
/**
|
|
* Append any content to the current array.
|
|
* @param {Object} input the content to add.
|
|
*/
|
|
append : function (input) {
|
|
if (input.length !== 0) {
|
|
// with an empty Uint8Array, Opera fails with a "Offset larger than array size"
|
|
input = JSZip.utils.transformTo("uint8array", input);
|
|
this.data.set(input, this.index);
|
|
this.index += input.length;
|
|
}
|
|
},
|
|
/**
|
|
* Finalize the construction an return the result.
|
|
* @return {Uint8Array} the generated array.
|
|
*/
|
|
finalize : function () {
|
|
return this.data;
|
|
}
|
|
};
|
|
|
|
// return the actual prototype of JSZip
|
|
return {
|
|
/**
|
|
* Read an existing zip and merge the data in the current JSZip object.
|
|
* The implementation is in jszip-load.js, don't forget to include it.
|
|
* @param {String|ArrayBuffer|Uint8Array|Buffer} stream The stream to load
|
|
* @param {Object} options Options for loading the stream.
|
|
* options.base64 : is the stream in base64 ? default : false
|
|
* @return {JSZip} the current JSZip object
|
|
*/
|
|
load : function (stream, options) {
|
|
throw new Error("Load method is not defined. Is the file jszip-load.js included ?");
|
|
},
|
|
|
|
/**
|
|
* 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 = [], filename, relativePath, file, fileClone;
|
|
for (filename in this.files) {
|
|
if ( !this.files.hasOwnProperty(filename) ) { continue; }
|
|
file = this.files[filename];
|
|
// return a new object, don't let the user mess with our internal objects :)
|
|
fileClone = new ZipObject(file.name, file._data, extend(file.options));
|
|
relativePath = filename.slice(this.root.length, filename.length);
|
|
if (filename.slice(0, this.root.length) === this.root && // the file is in the current root
|
|
search(relativePath, fileClone)) { // and the file matches the function
|
|
result.push(fileClone);
|
|
}
|
|
}
|
|
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 (JSZip.utils.isRegExp(name)) {
|
|
var regexp = name;
|
|
return this.filter(function(relativePath, file) {
|
|
return !file.options.dir && regexp.test(relativePath);
|
|
});
|
|
} else { // text
|
|
return this.filter(function (relativePath, file) {
|
|
return !file.options.dir && relativePath === name;
|
|
})[0]||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 (JSZip.utils.isRegExp(arg)) {
|
|
return this.filter(function(relativePath, file) {
|
|
return file.options.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) {
|
|
if (!file.options.dir) {
|
|
// file
|
|
delete this.files[name];
|
|
} else {
|
|
// folder
|
|
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 :
|
|
* - base64, (deprecated, use type instead) true to generate base64.
|
|
* - 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) {
|
|
options = extend(options || {}, {
|
|
base64 : true,
|
|
compression : "STORE",
|
|
type : "base64"
|
|
});
|
|
|
|
JSZip.utils.checkSupport(options.type);
|
|
|
|
var zipData = [], localDirLength = 0, centralDirLength = 0, writer, i;
|
|
|
|
|
|
// first, generate all the zip parts.
|
|
for (var name in this.files) {
|
|
if ( !this.files.hasOwnProperty(name) ) { continue; }
|
|
var file = this.files[name];
|
|
|
|
var compressionName = file.options.compression || options.compression.toUpperCase();
|
|
var compression = JSZip.compressions[compressionName];
|
|
if (!compression) {
|
|
throw new Error(compressionName + " is not a valid compression method !");
|
|
}
|
|
|
|
var compressedObject = generateCompressedObjectFrom.call(this, file, compression);
|
|
|
|
var zipPart = generateZipParts.call(this, name, file, compressedObject, localDirLength);
|
|
localDirLength += zipPart.fileRecord.length + compressedObject.compressedSize;
|
|
centralDirLength += zipPart.dirRecord.length;
|
|
zipData.push(zipPart);
|
|
}
|
|
|
|
var dirEnd = "";
|
|
|
|
// end of central dir signature
|
|
dirEnd = JSZip.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(zipData.length, 2) +
|
|
// total number of entries in the central directory
|
|
decToHex(zipData.length, 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
|
|
"\x00\x00";
|
|
|
|
|
|
// we have all the parts (and the total length)
|
|
// time to create a writer !
|
|
switch(options.type.toLowerCase()) {
|
|
case "uint8array" :
|
|
case "arraybuffer" :
|
|
case "blob" :
|
|
case "nodebuffer" :
|
|
writer = new Uint8ArrayWriter(localDirLength + centralDirLength + dirEnd.length);
|
|
break;
|
|
// case "base64" :
|
|
// case "string" :
|
|
default :
|
|
writer = new StringWriter(localDirLength + centralDirLength + dirEnd.length);
|
|
break;
|
|
}
|
|
|
|
for (i = 0; i < zipData.length; i++) {
|
|
writer.append(zipData[i].fileRecord);
|
|
writer.append(zipData[i].compressedObject.compressedContent);
|
|
}
|
|
for (i = 0; i < zipData.length; i++) {
|
|
writer.append(zipData[i].dirRecord);
|
|
}
|
|
|
|
writer.append(dirEnd);
|
|
|
|
var zip = writer.finalize();
|
|
|
|
|
|
|
|
switch(options.type.toLowerCase()) {
|
|
// case "zip is an Uint8Array"
|
|
case "uint8array" :
|
|
case "arraybuffer" :
|
|
case "nodebuffer" :
|
|
return JSZip.utils.transformTo(options.type.toLowerCase(), zip);
|
|
case "blob" :
|
|
return JSZip.utils.arrayBuffer2Blob(JSZip.utils.transformTo("arraybuffer", zip));
|
|
|
|
// case "zip is a string"
|
|
case "base64" :
|
|
return (options.base64) ? JSZip.base64.encode(zip) : zip;
|
|
default : // case "string" :
|
|
return zip;
|
|
}
|
|
},
|
|
|
|
/**
|
|
*
|
|
* Javascript crc32
|
|
* http://www.webtoolkit.info/
|
|
*
|
|
*/
|
|
crc32 : function crc32(input, crc) {
|
|
if (typeof input === "undefined" || !input.length) {
|
|
return 0;
|
|
}
|
|
|
|
var isArray = JSZip.utils.getTypeOf(input) !== "string";
|
|
|
|
var table = [
|
|
0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
|
|
0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
|
|
0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
|
|
0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
|
|
0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
|
|
0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
|
|
0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
|
|
0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
|
|
0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
|
|
0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
|
|
0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
|
|
0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
|
|
0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
|
|
0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
|
|
0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
|
|
0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
|
|
0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
|
|
0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
|
|
0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
|
|
0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
|
|
0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
|
|
0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
|
|
0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
|
|
0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
|
|
0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
|
|
0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
|
|
0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
|
|
0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
|
|
0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
|
|
0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
|
|
0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
|
|
0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
|
|
0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
|
|
0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
|
|
0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
|
|
0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
|
|
0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
|
|
0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
|
|
0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
|
|
0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
|
|
0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
|
|
0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
|
|
0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
|
|
0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
|
|
0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
|
|
0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
|
|
0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
|
|
0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
|
|
0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
|
|
0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
|
|
0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
|
|
0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
|
|
0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
|
|
0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
|
|
0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
|
|
0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
|
|
0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
|
|
0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
|
|
0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
|
|
0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
|
|
0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
|
|
0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
|
|
0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
|
|
0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
|
|
];
|
|
|
|
if (typeof(crc) == "undefined") { crc = 0; }
|
|
var x = 0;
|
|
var y = 0;
|
|
var byte = 0;
|
|
|
|
crc = crc ^ (-1);
|
|
for( var i = 0, iTop = input.length; i < iTop; i++ ) {
|
|
byte = isArray ? input[i] : input.charCodeAt(i);
|
|
y = ( crc ^ byte ) & 0xFF;
|
|
x = table[y];
|
|
crc = ( crc >>> 8 ) ^ x;
|
|
}
|
|
|
|
return crc ^ (-1);
|
|
},
|
|
|
|
// Inspired by http://my.opera.com/GreyWyvern/blog/show.dml/1725165
|
|
clone : function() {
|
|
var newObj = new JSZip();
|
|
for (var i in this) {
|
|
if (typeof this[i] !== "function") {
|
|
newObj[i] = this[i];
|
|
}
|
|
}
|
|
return newObj;
|
|
},
|
|
|
|
|
|
/**
|
|
* http://www.webtoolkit.info/javascript-utf8.html
|
|
*/
|
|
utf8encode : function (string) {
|
|
// TextEncoder + Uint8Array to binary string is faster than checking every bytes on long strings.
|
|
// http://jsperf.com/utf8encode-vs-textencoder
|
|
// On short strings (file names for example), the TextEncoder API is (currently) slower.
|
|
if (textEncoder) {
|
|
var u8 = textEncoder.encode(string);
|
|
return JSZip.utils.transformTo("string", u8);
|
|
}
|
|
if (JSZip.support.nodebuffer) {
|
|
return JSZip.utils.transformTo("string", new Buffer(string, "utf-8"));
|
|
}
|
|
|
|
// array.join may be slower than string concatenation but generates less objects (less time spent garbage collecting).
|
|
// See also http://jsperf.com/array-direct-assignment-vs-push/31
|
|
var result = [], resIndex = 0;
|
|
|
|
for (var n = 0; n < string.length; n++) {
|
|
|
|
var c = string.charCodeAt(n);
|
|
|
|
if (c < 128) {
|
|
result[resIndex++] = String.fromCharCode(c);
|
|
} else if ((c > 127) && (c < 2048)) {
|
|
result[resIndex++] = String.fromCharCode((c >> 6) | 192);
|
|
result[resIndex++] = String.fromCharCode((c & 63) | 128);
|
|
} else {
|
|
result[resIndex++] = String.fromCharCode((c >> 12) | 224);
|
|
result[resIndex++] = String.fromCharCode(((c >> 6) & 63) | 128);
|
|
result[resIndex++] = String.fromCharCode((c & 63) | 128);
|
|
}
|
|
|
|
}
|
|
|
|
return result.join("");
|
|
},
|
|
|
|
/**
|
|
* http://www.webtoolkit.info/javascript-utf8.html
|
|
*/
|
|
utf8decode : function (input) {
|
|
var result = [], resIndex = 0;
|
|
var type = JSZip.utils.getTypeOf(input);
|
|
var isArray = type !== "string";
|
|
var i = 0;
|
|
var c = 0, c1 = 0, c2 = 0, c3 = 0;
|
|
|
|
// check if we can use the TextDecoder API
|
|
// see http://encoding.spec.whatwg.org/#api
|
|
if (textDecoder) {
|
|
return textDecoder.decode(
|
|
JSZip.utils.transformTo("uint8array", input)
|
|
);
|
|
}
|
|
if (JSZip.support.nodebuffer) {
|
|
return JSZip.utils.transformTo("nodebuffer", input).toString("utf-8");
|
|
}
|
|
|
|
while ( i < input.length ) {
|
|
|
|
c = isArray ? input[i] : input.charCodeAt(i);
|
|
|
|
if (c < 128) {
|
|
result[resIndex++] = String.fromCharCode(c);
|
|
i++;
|
|
} else if ((c > 191) && (c < 224)) {
|
|
c2 = isArray ? input[i+1] : input.charCodeAt(i+1);
|
|
result[resIndex++] = String.fromCharCode(((c & 31) << 6) | (c2 & 63));
|
|
i += 2;
|
|
} else {
|
|
c2 = isArray ? input[i+1] : input.charCodeAt(i+1);
|
|
c3 = isArray ? input[i+2] : input.charCodeAt(i+2);
|
|
result[resIndex++] = String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
|
|
i += 3;
|
|
}
|
|
|
|
}
|
|
|
|
return result.join("");
|
|
}
|
|
};
|
|
}());
|
|
|
|
/*
|
|
* Compression methods
|
|
* This object is filled in as follow :
|
|
* name : {
|
|
* magic // the 2 bytes indentifying the compression method
|
|
* compress // function, take the uncompressed content and return it compressed.
|
|
* uncompress // function, take the compressed content and return it uncompressed.
|
|
* compressInputType // string, the type accepted by the compress method. null to accept everything.
|
|
* uncompressInputType // string, the type accepted by the uncompress method. null to accept everything.
|
|
* }
|
|
*
|
|
* STORE is the default compression method, so it's included in this file.
|
|
* Other methods should go to separated files : the user wants modularity.
|
|
*/
|
|
JSZip.compressions = {
|
|
"STORE" : {
|
|
magic : "\x00\x00",
|
|
compress : function (content) {
|
|
return content; // no compression
|
|
},
|
|
uncompress : function (content) {
|
|
return content; // no compression
|
|
},
|
|
compressInputType : null,
|
|
uncompressInputType : null
|
|
}
|
|
};
|
|
|
|
(function () {
|
|
JSZip.utils = {
|
|
/**
|
|
* Convert a string to a "binary string" : a string containing only char codes between 0 and 255.
|
|
* @param {string} str the string to transform.
|
|
* @return {String} the binary string.
|
|
*/
|
|
string2binary : function (str) {
|
|
var result = "";
|
|
for (var i = 0; i < str.length; i++) {
|
|
result += String.fromCharCode(str.charCodeAt(i) & 0xff);
|
|
}
|
|
return result;
|
|
},
|
|
/**
|
|
* Create a Uint8Array from the string.
|
|
* @param {string} str the string to transform.
|
|
* @return {Uint8Array} the typed array.
|
|
* @throws {Error} an Error if the browser doesn't support the requested feature.
|
|
* @deprecated : use JSZip.utils.transformTo instead.
|
|
*/
|
|
string2Uint8Array : function (str) {
|
|
return JSZip.utils.transformTo("uint8array", str);
|
|
},
|
|
|
|
/**
|
|
* Create a string from the Uint8Array.
|
|
* @param {Uint8Array} array the array to transform.
|
|
* @return {string} the string.
|
|
* @throws {Error} an Error if the browser doesn't support the requested feature.
|
|
* @deprecated : use JSZip.utils.transformTo instead.
|
|
*/
|
|
uint8Array2String : function (array) {
|
|
return JSZip.utils.transformTo("string", array);
|
|
},
|
|
/**
|
|
* Create a blob from the given ArrayBuffer.
|
|
* @param {ArrayBuffer} buffer the buffer to transform.
|
|
* @return {Blob} the result.
|
|
* @throws {Error} an Error if the browser doesn't support the requested feature.
|
|
*/
|
|
arrayBuffer2Blob : function (buffer) {
|
|
JSZip.utils.checkSupport("blob");
|
|
|
|
try {
|
|
// Blob constructor
|
|
return new Blob([buffer], { type: "application/zip" });
|
|
}
|
|
catch(e) {}
|
|
|
|
try {
|
|
// deprecated, browser only, old way
|
|
var BlobBuilder = window.BlobBuilder || window.WebKitBlobBuilder || window.MozBlobBuilder || window.MSBlobBuilder;
|
|
var builder = new BlobBuilder();
|
|
builder.append(buffer);
|
|
return builder.getBlob('application/zip');
|
|
}
|
|
catch(e) {}
|
|
|
|
// well, fuck ?!
|
|
throw new Error("Bug : can't construct the Blob.");
|
|
},
|
|
/**
|
|
* Create a blob from the given string.
|
|
* @param {string} str the string to transform.
|
|
* @return {Blob} the result.
|
|
* @throws {Error} an Error if the browser doesn't support the requested feature.
|
|
*/
|
|
string2Blob : function (str) {
|
|
var buffer = JSZip.utils.transformTo("arraybuffer", str);
|
|
return JSZip.utils.arrayBuffer2Blob(buffer);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* The identity function.
|
|
* @param {Object} input the input.
|
|
* @return {Object} the same input.
|
|
*/
|
|
function identity(input) {
|
|
return input;
|
|
}
|
|
|
|
/**
|
|
* Fill in an array with a string.
|
|
* @param {String} str the string to use.
|
|
* @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to fill in (will be mutated).
|
|
* @return {Array|ArrayBuffer|Uint8Array|Buffer} the updated array.
|
|
*/
|
|
function stringToArrayLike(str, array) {
|
|
for (var i = 0; i < str.length; ++i) {
|
|
array[i] = str.charCodeAt(i) & 0xFF;
|
|
}
|
|
return array;
|
|
}
|
|
|
|
/**
|
|
* Transform an array-like object to a string.
|
|
* @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to transform.
|
|
* @return {String} the result.
|
|
*/
|
|
function arrayLikeToString(array) {
|
|
// Performances notes :
|
|
// --------------------
|
|
// String.fromCharCode.apply(null, array) is the fastest, see
|
|
// see http://jsperf.com/converting-a-uint8array-to-a-string/2
|
|
// but the stack is limited (and we can get huge arrays !).
|
|
//
|
|
// result += String.fromCharCode(array[i]); generate too many strings !
|
|
//
|
|
// This code is inspired by http://jsperf.com/arraybuffer-to-string-apply-performance/2
|
|
var chunk = 65536;
|
|
var result = [], len = array.length, type = JSZip.utils.getTypeOf(array), k = 0;
|
|
|
|
var canUseApply = true;
|
|
try {
|
|
switch(type) {
|
|
case "uint8array":
|
|
String.fromCharCode.apply(null, new Uint8Array(0));
|
|
break;
|
|
case "nodebuffer":
|
|
String.fromCharCode.apply(null, new Buffer(0));
|
|
break;
|
|
}
|
|
} catch(e) {
|
|
canUseApply = false;
|
|
}
|
|
|
|
// no apply : slow and painful algorithm
|
|
// default browser on android 4.*
|
|
if (!canUseApply) {
|
|
var resultStr = "";
|
|
for(var i = 0; i < array.length;i++) {
|
|
resultStr += String.fromCharCode(array[i]);
|
|
}
|
|
return resultStr;
|
|
}
|
|
|
|
while (k < len && chunk > 1) {
|
|
try {
|
|
if (type === "array" || type === "nodebuffer") {
|
|
result.push(String.fromCharCode.apply(null, array.slice(k, Math.min(k + chunk, len))));
|
|
} else {
|
|
result.push(String.fromCharCode.apply(null, array.subarray(k, Math.min(k + chunk, len))));
|
|
}
|
|
k += chunk;
|
|
} catch (e) {
|
|
chunk = Math.floor(chunk / 2);
|
|
}
|
|
}
|
|
return result.join("");
|
|
}
|
|
|
|
/**
|
|
* Copy the data from an array-like to an other array-like.
|
|
* @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayFrom the origin array.
|
|
* @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayTo the destination array which will be mutated.
|
|
* @return {Array|ArrayBuffer|Uint8Array|Buffer} the updated destination array.
|
|
*/
|
|
function arrayLikeToArrayLike(arrayFrom, arrayTo) {
|
|
for(var i = 0; i < arrayFrom.length; i++) {
|
|
arrayTo[i] = arrayFrom[i];
|
|
}
|
|
return arrayTo;
|
|
}
|
|
|
|
// a matrix containing functions to transform everything into everything.
|
|
var transform = {};
|
|
|
|
// string to ?
|
|
transform["string"] = {
|
|
"string" : identity,
|
|
"array" : function (input) {
|
|
return stringToArrayLike(input, new Array(input.length));
|
|
},
|
|
"arraybuffer" : function (input) {
|
|
return transform["string"]["uint8array"](input).buffer;
|
|
},
|
|
"uint8array" : function (input) {
|
|
return stringToArrayLike(input, new Uint8Array(input.length));
|
|
},
|
|
"nodebuffer" : function (input) {
|
|
return stringToArrayLike(input, new Buffer(input.length));
|
|
}
|
|
};
|
|
|
|
// array to ?
|
|
transform["array"] = {
|
|
"string" : arrayLikeToString,
|
|
"array" : identity,
|
|
"arraybuffer" : function (input) {
|
|
return (new Uint8Array(input)).buffer;
|
|
},
|
|
"uint8array" : function (input) {
|
|
return new Uint8Array(input);
|
|
},
|
|
"nodebuffer" : function (input) {
|
|
return new Buffer(input);
|
|
}
|
|
};
|
|
|
|
// arraybuffer to ?
|
|
transform["arraybuffer"] = {
|
|
"string" : function (input) {
|
|
return arrayLikeToString(new Uint8Array(input));
|
|
},
|
|
"array" : function (input) {
|
|
return arrayLikeToArrayLike(new Uint8Array(input), new Array(input.byteLength));
|
|
},
|
|
"arraybuffer" : identity,
|
|
"uint8array" : function (input) {
|
|
return new Uint8Array(input);
|
|
},
|
|
"nodebuffer" : function (input) {
|
|
return new Buffer(new Uint8Array(input));
|
|
}
|
|
};
|
|
|
|
// uint8array to ?
|
|
transform["uint8array"] = {
|
|
"string" : arrayLikeToString,
|
|
"array" : function (input) {
|
|
return arrayLikeToArrayLike(input, new Array(input.length));
|
|
},
|
|
"arraybuffer" : function (input) {
|
|
return input.buffer;
|
|
},
|
|
"uint8array" : identity,
|
|
"nodebuffer" : function(input) {
|
|
return new Buffer(input);
|
|
}
|
|
};
|
|
|
|
// nodebuffer to ?
|
|
transform["nodebuffer"] = {
|
|
"string" : arrayLikeToString,
|
|
"array" : function (input) {
|
|
return arrayLikeToArrayLike(input, new Array(input.length));
|
|
},
|
|
"arraybuffer" : function (input) {
|
|
return transform["nodebuffer"]["uint8array"](input).buffer;
|
|
},
|
|
"uint8array" : function (input) {
|
|
return arrayLikeToArrayLike(input, new Uint8Array(input.length));
|
|
},
|
|
"nodebuffer" : identity
|
|
};
|
|
|
|
/**
|
|
* Transform an input into any type.
|
|
* The supported output type are : string, array, uint8array, arraybuffer, nodebuffer.
|
|
* If no output type is specified, the unmodified input will be returned.
|
|
* @param {String} outputType the output type.
|
|
* @param {String|Array|ArrayBuffer|Uint8Array|Buffer} input the input to convert.
|
|
* @throws {Error} an Error if the browser doesn't support the requested output type.
|
|
*/
|
|
JSZip.utils.transformTo = function (outputType, input) {
|
|
if (!input) {
|
|
// undefined, null, etc
|
|
// an empty string won't harm.
|
|
input = "";
|
|
}
|
|
if (!outputType) {
|
|
return input;
|
|
}
|
|
JSZip.utils.checkSupport(outputType);
|
|
var inputType = JSZip.utils.getTypeOf(input);
|
|
var result = transform[inputType][outputType](input);
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Return the type of the input.
|
|
* The type will be in a format valid for JSZip.utils.transformTo : string, array, uint8array, arraybuffer.
|
|
* @param {Object} input the input to identify.
|
|
* @return {String} the (lowercase) type of the input.
|
|
*/
|
|
JSZip.utils.getTypeOf = function (input) {
|
|
if (typeof input === "string") {
|
|
return "string";
|
|
}
|
|
if (Object.prototype.toString.call(input) === "[object Array]") {
|
|
return "array";
|
|
}
|
|
if (JSZip.support.nodebuffer && Buffer.isBuffer(input)) {
|
|
return "nodebuffer";
|
|
}
|
|
if (JSZip.support.uint8array && input instanceof Uint8Array) {
|
|
return "uint8array";
|
|
}
|
|
if (JSZip.support.arraybuffer && input instanceof ArrayBuffer) {
|
|
return "arraybuffer";
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Cross-window, cross-Node-context regular expression detection
|
|
* @param {Object} object Anything
|
|
* @return {Boolean} true if the object is a regular expression,
|
|
* false otherwise
|
|
*/
|
|
JSZip.utils.isRegExp = function (object) {
|
|
return Object.prototype.toString.call(object) === "[object RegExp]";
|
|
};
|
|
|
|
/**
|
|
* Throw an exception if the type is not supported.
|
|
* @param {String} type the type to check.
|
|
* @throws {Error} an Error if the browser doesn't support the requested type.
|
|
*/
|
|
JSZip.utils.checkSupport = function (type) {
|
|
var supported = true;
|
|
switch (type.toLowerCase()) {
|
|
case "uint8array":
|
|
supported = JSZip.support.uint8array;
|
|
break;
|
|
case "arraybuffer":
|
|
supported = JSZip.support.arraybuffer;
|
|
break;
|
|
case "nodebuffer":
|
|
supported = JSZip.support.nodebuffer;
|
|
break;
|
|
case "blob":
|
|
supported = JSZip.support.blob;
|
|
break;
|
|
}
|
|
if (!supported) {
|
|
throw new Error(type + " is not supported by this browser");
|
|
}
|
|
};
|
|
|
|
|
|
})();
|
|
|
|
(function (){
|
|
/**
|
|
* Represents an entry in the zip.
|
|
* The content may or may not be compressed.
|
|
* @constructor
|
|
*/
|
|
JSZip.CompressedObject = function () {
|
|
this.compressedSize = 0;
|
|
this.uncompressedSize = 0;
|
|
this.crc32 = 0;
|
|
this.compressionMethod = null;
|
|
this.compressedContent = null;
|
|
};
|
|
|
|
JSZip.CompressedObject.prototype = {
|
|
/**
|
|
* Return the decompressed content in an unspecified format.
|
|
* The format will depend on the decompressor.
|
|
* @return {Object} the decompressed content.
|
|
*/
|
|
getContent : function () {
|
|
return null; // see implementation
|
|
},
|
|
/**
|
|
* Return the compressed content in an unspecified format.
|
|
* The format will depend on the compressed conten source.
|
|
* @return {Object} the compressed content.
|
|
*/
|
|
getCompressedContent : function () {
|
|
return null; // see implementation
|
|
}
|
|
};
|
|
})();
|
|
|
|
/**
|
|
*
|
|
* Base64 encode / decode
|
|
* http://www.webtoolkit.info/
|
|
*
|
|
* Hacked so that it doesn't utf8 en/decode everything
|
|
**/
|
|
JSZip.base64 = (function() {
|
|
// private property
|
|
var _keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
|
|
|
|
return {
|
|
// public method for encoding
|
|
encode : function(input, utf8) {
|
|
var output = "";
|
|
var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
|
|
var i = 0;
|
|
|
|
while (i < input.length) {
|
|
|
|
chr1 = input.charCodeAt(i++);
|
|
chr2 = input.charCodeAt(i++);
|
|
chr3 = input.charCodeAt(i++);
|
|
|
|
enc1 = chr1 >> 2;
|
|
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
|
|
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
|
|
enc4 = chr3 & 63;
|
|
|
|
if (isNaN(chr2)) {
|
|
enc3 = enc4 = 64;
|
|
} else if (isNaN(chr3)) {
|
|
enc4 = 64;
|
|
}
|
|
|
|
output = output +
|
|
_keyStr.charAt(enc1) + _keyStr.charAt(enc2) +
|
|
_keyStr.charAt(enc3) + _keyStr.charAt(enc4);
|
|
|
|
}
|
|
|
|
return output;
|
|
},
|
|
|
|
// public method for decoding
|
|
decode : function(input, utf8) {
|
|
var output = "";
|
|
var chr1, chr2, chr3;
|
|
var enc1, enc2, enc3, enc4;
|
|
var i = 0;
|
|
|
|
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
|
|
|
|
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 = output + String.fromCharCode(chr1);
|
|
|
|
if (enc3 != 64) {
|
|
output = output + String.fromCharCode(chr2);
|
|
}
|
|
if (enc4 != 64) {
|
|
output = output + String.fromCharCode(chr3);
|
|
}
|
|
|
|
}
|
|
|
|
return output;
|
|
|
|
}
|
|
};
|
|
}());
|
|
|
|
// enforcing Stuk's coding style
|
|
// vim: set shiftwidth=3 softtabstop=3:
|
|
(function () {
|
|
"use strict";
|
|
|
|
if(!JSZip) {
|
|
throw "JSZip not defined";
|
|
}
|
|
|
|
/*jshint -W004, -W018, -W030, -W032, -W033, -W034, -W037,-W040, -W055, -W056, -W061, -W064, -W093, -W117 */
|
|
var context = {};
|
|
(function () {
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|
|
|
// https://github.com/imaya/zlib.js
|
|
// tag 0.1.6
|
|
// file bin/deflate.min.js
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|
|
|
/** @license zlib.js 2012 - imaya [ https://github.com/imaya/zlib.js ] The MIT License */(function() {'use strict';var n=void 0,u=!0,aa=this;function ba(e,d){var c=e.split("."),f=aa;!(c[0]in f)&&f.execScript&&f.execScript("var "+c[0]);for(var a;c.length&&(a=c.shift());)!c.length&&d!==n?f[a]=d:f=f[a]?f[a]:f[a]={}};var C="undefined"!==typeof Uint8Array&&"undefined"!==typeof Uint16Array&&"undefined"!==typeof Uint32Array;function K(e,d){this.index="number"===typeof d?d:0;this.d=0;this.buffer=e instanceof(C?Uint8Array:Array)?e:new (C?Uint8Array:Array)(32768);if(2*this.buffer.length<=this.index)throw Error("invalid index");this.buffer.length<=this.index&&ca(this)}function ca(e){var d=e.buffer,c,f=d.length,a=new (C?Uint8Array:Array)(f<<1);if(C)a.set(d);else for(c=0;c<f;++c)a[c]=d[c];return e.buffer=a}
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|
K.prototype.a=function(e,d,c){var f=this.buffer,a=this.index,b=this.d,k=f[a],m;c&&1<d&&(e=8<d?(L[e&255]<<24|L[e>>>8&255]<<16|L[e>>>16&255]<<8|L[e>>>24&255])>>32-d:L[e]>>8-d);if(8>d+b)k=k<<d|e,b+=d;else for(m=0;m<d;++m)k=k<<1|e>>d-m-1&1,8===++b&&(b=0,f[a++]=L[k],k=0,a===f.length&&(f=ca(this)));f[a]=k;this.buffer=f;this.d=b;this.index=a};K.prototype.finish=function(){var e=this.buffer,d=this.index,c;0<this.d&&(e[d]<<=8-this.d,e[d]=L[e[d]],d++);C?c=e.subarray(0,d):(e.length=d,c=e);return c};
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|
var ga=new (C?Uint8Array:Array)(256),M;for(M=0;256>M;++M){for(var R=M,S=R,ha=7,R=R>>>1;R;R>>>=1)S<<=1,S|=R&1,--ha;ga[M]=(S<<ha&255)>>>0}var L=ga;function ja(e){this.buffer=new (C?Uint16Array:Array)(2*e);this.length=0}ja.prototype.getParent=function(e){return 2*((e-2)/4|0)};ja.prototype.push=function(e,d){var c,f,a=this.buffer,b;c=this.length;a[this.length++]=d;for(a[this.length++]=e;0<c;)if(f=this.getParent(c),a[c]>a[f])b=a[c],a[c]=a[f],a[f]=b,b=a[c+1],a[c+1]=a[f+1],a[f+1]=b,c=f;else break;return this.length};
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|
ja.prototype.pop=function(){var e,d,c=this.buffer,f,a,b;d=c[0];e=c[1];this.length-=2;c[0]=c[this.length];c[1]=c[this.length+1];for(b=0;;){a=2*b+2;if(a>=this.length)break;a+2<this.length&&c[a+2]>c[a]&&(a+=2);if(c[a]>c[b])f=c[b],c[b]=c[a],c[a]=f,f=c[b+1],c[b+1]=c[a+1],c[a+1]=f;else break;b=a}return{index:e,value:d,length:this.length}};function ka(e,d){this.e=ma;this.f=0;this.input=C&&e instanceof Array?new Uint8Array(e):e;this.c=0;d&&(d.lazy&&(this.f=d.lazy),"number"===typeof d.compressionType&&(this.e=d.compressionType),d.outputBuffer&&(this.b=C&&d.outputBuffer instanceof Array?new Uint8Array(d.outputBuffer):d.outputBuffer),"number"===typeof d.outputIndex&&(this.c=d.outputIndex));this.b||(this.b=new (C?Uint8Array:Array)(32768))}var ma=2,T=[],U;
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|
for(U=0;288>U;U++)switch(u){case 143>=U:T.push([U+48,8]);break;case 255>=U:T.push([U-144+400,9]);break;case 279>=U:T.push([U-256+0,7]);break;case 287>=U:T.push([U-280+192,8]);break;default:throw"invalid literal: "+U;}
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|
ka.prototype.h=function(){var e,d,c,f,a=this.input;switch(this.e){case 0:c=0;for(f=a.length;c<f;){d=C?a.subarray(c,c+65535):a.slice(c,c+65535);c+=d.length;var b=d,k=c===f,m=n,g=n,p=n,v=n,x=n,l=this.b,h=this.c;if(C){for(l=new Uint8Array(this.b.buffer);l.length<=h+b.length+5;)l=new Uint8Array(l.length<<1);l.set(this.b)}m=k?1:0;l[h++]=m|0;g=b.length;p=~g+65536&65535;l[h++]=g&255;l[h++]=g>>>8&255;l[h++]=p&255;l[h++]=p>>>8&255;if(C)l.set(b,h),h+=b.length,l=l.subarray(0,h);else{v=0;for(x=b.length;v<x;++v)l[h++]=
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|
b[v];l.length=h}this.c=h;this.b=l}break;case 1:var q=new K(C?new Uint8Array(this.b.buffer):this.b,this.c);q.a(1,1,u);q.a(1,2,u);var t=na(this,a),w,da,z;w=0;for(da=t.length;w<da;w++)if(z=t[w],K.prototype.a.apply(q,T[z]),256<z)q.a(t[++w],t[++w],u),q.a(t[++w],5),q.a(t[++w],t[++w],u);else if(256===z)break;this.b=q.finish();this.c=this.b.length;break;case ma:var B=new K(C?new Uint8Array(this.b.buffer):this.b,this.c),ra,J,N,O,P,Ia=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],W,sa,X,ta,ea,ia=Array(19),
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|
ua,Q,fa,y,va;ra=ma;B.a(1,1,u);B.a(ra,2,u);J=na(this,a);W=oa(this.j,15);sa=pa(W);X=oa(this.i,7);ta=pa(X);for(N=286;257<N&&0===W[N-1];N--);for(O=30;1<O&&0===X[O-1];O--);var wa=N,xa=O,F=new (C?Uint32Array:Array)(wa+xa),r,G,s,Y,E=new (C?Uint32Array:Array)(316),D,A,H=new (C?Uint8Array:Array)(19);for(r=G=0;r<wa;r++)F[G++]=W[r];for(r=0;r<xa;r++)F[G++]=X[r];if(!C){r=0;for(Y=H.length;r<Y;++r)H[r]=0}r=D=0;for(Y=F.length;r<Y;r+=G){for(G=1;r+G<Y&&F[r+G]===F[r];++G);s=G;if(0===F[r])if(3>s)for(;0<s--;)E[D++]=0,
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|
H[0]++;else for(;0<s;)A=138>s?s:138,A>s-3&&A<s&&(A=s-3),10>=A?(E[D++]=17,E[D++]=A-3,H[17]++):(E[D++]=18,E[D++]=A-11,H[18]++),s-=A;else if(E[D++]=F[r],H[F[r]]++,s--,3>s)for(;0<s--;)E[D++]=F[r],H[F[r]]++;else for(;0<s;)A=6>s?s:6,A>s-3&&A<s&&(A=s-3),E[D++]=16,E[D++]=A-3,H[16]++,s-=A}e=C?E.subarray(0,D):E.slice(0,D);ea=oa(H,7);for(y=0;19>y;y++)ia[y]=ea[Ia[y]];for(P=19;4<P&&0===ia[P-1];P--);ua=pa(ea);B.a(N-257,5,u);B.a(O-1,5,u);B.a(P-4,4,u);for(y=0;y<P;y++)B.a(ia[y],3,u);y=0;for(va=e.length;y<va;y++)if(Q=
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|
e[y],B.a(ua[Q],ea[Q],u),16<=Q){y++;switch(Q){case 16:fa=2;break;case 17:fa=3;break;case 18:fa=7;break;default:throw"invalid code: "+Q;}B.a(e[y],fa,u)}var ya=[sa,W],za=[ta,X],I,Aa,Z,la,Ba,Ca,Da,Ea;Ba=ya[0];Ca=ya[1];Da=za[0];Ea=za[1];I=0;for(Aa=J.length;I<Aa;++I)if(Z=J[I],B.a(Ba[Z],Ca[Z],u),256<Z)B.a(J[++I],J[++I],u),la=J[++I],B.a(Da[la],Ea[la],u),B.a(J[++I],J[++I],u);else if(256===Z)break;this.b=B.finish();this.c=this.b.length;break;default:throw"invalid compression type";}return this.b};
|
|
function qa(e,d){this.length=e;this.g=d}
|
|
var Fa=function(){function e(a){switch(u){case 3===a:return[257,a-3,0];case 4===a:return[258,a-4,0];case 5===a:return[259,a-5,0];case 6===a:return[260,a-6,0];case 7===a:return[261,a-7,0];case 8===a:return[262,a-8,0];case 9===a:return[263,a-9,0];case 10===a:return[264,a-10,0];case 12>=a:return[265,a-11,1];case 14>=a:return[266,a-13,1];case 16>=a:return[267,a-15,1];case 18>=a:return[268,a-17,1];case 22>=a:return[269,a-19,2];case 26>=a:return[270,a-23,2];case 30>=a:return[271,a-27,2];case 34>=a:return[272,
|
|
a-31,2];case 42>=a:return[273,a-35,3];case 50>=a:return[274,a-43,3];case 58>=a:return[275,a-51,3];case 66>=a:return[276,a-59,3];case 82>=a:return[277,a-67,4];case 98>=a:return[278,a-83,4];case 114>=a:return[279,a-99,4];case 130>=a:return[280,a-115,4];case 162>=a:return[281,a-131,5];case 194>=a:return[282,a-163,5];case 226>=a:return[283,a-195,5];case 257>=a:return[284,a-227,5];case 258===a:return[285,a-258,0];default:throw"invalid length: "+a;}}var d=[],c,f;for(c=3;258>=c;c++)f=e(c),d[c]=f[2]<<24|
|
|
f[1]<<16|f[0];return d}(),Ga=C?new Uint32Array(Fa):Fa;
|
|
function na(e,d){function c(a,c){var b=a.g,d=[],f=0,e;e=Ga[a.length];d[f++]=e&65535;d[f++]=e>>16&255;d[f++]=e>>24;var g;switch(u){case 1===b:g=[0,b-1,0];break;case 2===b:g=[1,b-2,0];break;case 3===b:g=[2,b-3,0];break;case 4===b:g=[3,b-4,0];break;case 6>=b:g=[4,b-5,1];break;case 8>=b:g=[5,b-7,1];break;case 12>=b:g=[6,b-9,2];break;case 16>=b:g=[7,b-13,2];break;case 24>=b:g=[8,b-17,3];break;case 32>=b:g=[9,b-25,3];break;case 48>=b:g=[10,b-33,4];break;case 64>=b:g=[11,b-49,4];break;case 96>=b:g=[12,b-
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|
65,5];break;case 128>=b:g=[13,b-97,5];break;case 192>=b:g=[14,b-129,6];break;case 256>=b:g=[15,b-193,6];break;case 384>=b:g=[16,b-257,7];break;case 512>=b:g=[17,b-385,7];break;case 768>=b:g=[18,b-513,8];break;case 1024>=b:g=[19,b-769,8];break;case 1536>=b:g=[20,b-1025,9];break;case 2048>=b:g=[21,b-1537,9];break;case 3072>=b:g=[22,b-2049,10];break;case 4096>=b:g=[23,b-3073,10];break;case 6144>=b:g=[24,b-4097,11];break;case 8192>=b:g=[25,b-6145,11];break;case 12288>=b:g=[26,b-8193,12];break;case 16384>=
|
|
b:g=[27,b-12289,12];break;case 24576>=b:g=[28,b-16385,13];break;case 32768>=b:g=[29,b-24577,13];break;default:throw"invalid distance";}e=g;d[f++]=e[0];d[f++]=e[1];d[f++]=e[2];var k,m;k=0;for(m=d.length;k<m;++k)l[h++]=d[k];t[d[0]]++;w[d[3]]++;q=a.length+c-1;x=null}var f,a,b,k,m,g={},p,v,x,l=C?new Uint16Array(2*d.length):[],h=0,q=0,t=new (C?Uint32Array:Array)(286),w=new (C?Uint32Array:Array)(30),da=e.f,z;if(!C){for(b=0;285>=b;)t[b++]=0;for(b=0;29>=b;)w[b++]=0}t[256]=1;f=0;for(a=d.length;f<a;++f){b=
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|
m=0;for(k=3;b<k&&f+b!==a;++b)m=m<<8|d[f+b];g[m]===n&&(g[m]=[]);p=g[m];if(!(0<q--)){for(;0<p.length&&32768<f-p[0];)p.shift();if(f+3>=a){x&&c(x,-1);b=0;for(k=a-f;b<k;++b)z=d[f+b],l[h++]=z,++t[z];break}0<p.length?(v=Ha(d,f,p),x?x.length<v.length?(z=d[f-1],l[h++]=z,++t[z],c(v,0)):c(x,-1):v.length<da?x=v:c(v,0)):x?c(x,-1):(z=d[f],l[h++]=z,++t[z])}p.push(f)}l[h++]=256;t[256]++;e.j=t;e.i=w;return C?l.subarray(0,h):l}
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|
function Ha(e,d,c){var f,a,b=0,k,m,g,p,v=e.length;m=0;p=c.length;a:for(;m<p;m++){f=c[p-m-1];k=3;if(3<b){for(g=b;3<g;g--)if(e[f+g-1]!==e[d+g-1])continue a;k=b}for(;258>k&&d+k<v&&e[f+k]===e[d+k];)++k;k>b&&(a=f,b=k);if(258===k)break}return new qa(b,d-a)}
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|
function oa(e,d){var c=e.length,f=new ja(572),a=new (C?Uint8Array:Array)(c),b,k,m,g,p;if(!C)for(g=0;g<c;g++)a[g]=0;for(g=0;g<c;++g)0<e[g]&&f.push(g,e[g]);b=Array(f.length/2);k=new (C?Uint32Array:Array)(f.length/2);if(1===b.length)return a[f.pop().index]=1,a;g=0;for(p=f.length/2;g<p;++g)b[g]=f.pop(),k[g]=b[g].value;m=Ja(k,k.length,d);g=0;for(p=b.length;g<p;++g)a[b[g].index]=m[g];return a}
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|
function Ja(e,d,c){function f(a){var b=g[a][p[a]];b===d?(f(a+1),f(a+1)):--k[b];++p[a]}var a=new (C?Uint16Array:Array)(c),b=new (C?Uint8Array:Array)(c),k=new (C?Uint8Array:Array)(d),m=Array(c),g=Array(c),p=Array(c),v=(1<<c)-d,x=1<<c-1,l,h,q,t,w;a[c-1]=d;for(h=0;h<c;++h)v<x?b[h]=0:(b[h]=1,v-=x),v<<=1,a[c-2-h]=(a[c-1-h]/2|0)+d;a[0]=b[0];m[0]=Array(a[0]);g[0]=Array(a[0]);for(h=1;h<c;++h)a[h]>2*a[h-1]+b[h]&&(a[h]=2*a[h-1]+b[h]),m[h]=Array(a[h]),g[h]=Array(a[h]);for(l=0;l<d;++l)k[l]=c;for(q=0;q<a[c-1];++q)m[c-
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|
1][q]=e[q],g[c-1][q]=q;for(l=0;l<c;++l)p[l]=0;1===b[c-1]&&(--k[0],++p[c-1]);for(h=c-2;0<=h;--h){t=l=0;w=p[h+1];for(q=0;q<a[h];q++)t=m[h+1][w]+m[h+1][w+1],t>e[l]?(m[h][q]=t,g[h][q]=d,w+=2):(m[h][q]=e[l],g[h][q]=l,++l);p[h]=0;1===b[h]&&f(h)}return k}
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|
function pa(e){var d=new (C?Uint16Array:Array)(e.length),c=[],f=[],a=0,b,k,m,g;b=0;for(k=e.length;b<k;b++)c[e[b]]=(c[e[b]]|0)+1;b=1;for(k=16;b<=k;b++)f[b]=a,a+=c[b]|0,a<<=1;b=0;for(k=e.length;b<k;b++){a=f[e[b]];f[e[b]]+=1;m=d[b]=0;for(g=e[b];m<g;m++)d[b]=d[b]<<1|a&1,a>>>=1}return d};ba("Zlib.RawDeflate",ka);ba("Zlib.RawDeflate.prototype.compress",ka.prototype.h);var Ka={NONE:0,FIXED:1,DYNAMIC:ma},V,La,$,Ma;if(Object.keys)V=Object.keys(Ka);else for(La in V=[],$=0,Ka)V[$++]=La;$=0;for(Ma=V.length;$<Ma;++$)La=V[$],ba("Zlib.RawDeflate.CompressionType."+La,Ka[La]);}).call(this); //@ sourceMappingURL=rawdeflate.min.js.map
|
|
|
|
|
|
}).call(context);
|
|
/*jshint +W004, +W018, +W030, +W032, +W033, +W034, +W037,+W040, +W055, +W056, +W061, +W064, +W093, +W117 */
|
|
|
|
var compress = function (input) {
|
|
var deflate = new context.Zlib.RawDeflate(input);
|
|
return deflate.compress();
|
|
};
|
|
|
|
var USE_TYPEDARRAY =
|
|
(typeof Uint8Array !== 'undefined') &&
|
|
(typeof Uint16Array !== 'undefined') &&
|
|
(typeof Uint32Array !== 'undefined');
|
|
|
|
|
|
// we add the compression method for JSZip
|
|
if(!JSZip.compressions["DEFLATE"]) {
|
|
JSZip.compressions["DEFLATE"] = {
|
|
magic : "\x08\x00",
|
|
compress : compress,
|
|
compressInputType : USE_TYPEDARRAY ? "uint8array" : "array"
|
|
};
|
|
} else {
|
|
JSZip.compressions["DEFLATE"].compress = compress;
|
|
JSZip.compressions["DEFLATE"].compressInputType = USE_TYPEDARRAY ? "uint8array" : "array";
|
|
}
|
|
})();
|
|
|
|
// enforcing Stuk's coding style
|
|
// vim: set shiftwidth=3 softtabstop=3:
|
|
(function () {
|
|
"use strict";
|
|
|
|
if(!JSZip) {
|
|
throw "JSZip not defined";
|
|
}
|
|
|
|
/*jshint -W004, -W030, -W032, -W033, -W034, -W040, -W056, -W061, -W064, -W093 */
|
|
var context = {};
|
|
(function () {
|
|
|
|
// https://github.com/imaya/zlib.js
|
|
// tag 0.1.6
|
|
// file bin/deflate.min.js
|
|
|
|
/** @license zlib.js 2012 - imaya [ https://github.com/imaya/zlib.js ] The MIT License */(function() {'use strict';var l=void 0,p=this;function q(c,d){var a=c.split("."),b=p;!(a[0]in b)&&b.execScript&&b.execScript("var "+a[0]);for(var e;a.length&&(e=a.shift());)!a.length&&d!==l?b[e]=d:b=b[e]?b[e]:b[e]={}};var r="undefined"!==typeof Uint8Array&&"undefined"!==typeof Uint16Array&&"undefined"!==typeof Uint32Array;function u(c){var d=c.length,a=0,b=Number.POSITIVE_INFINITY,e,f,g,h,k,m,s,n,t;for(n=0;n<d;++n)c[n]>a&&(a=c[n]),c[n]<b&&(b=c[n]);e=1<<a;f=new (r?Uint32Array:Array)(e);g=1;h=0;for(k=2;g<=a;){for(n=0;n<d;++n)if(c[n]===g){m=0;s=h;for(t=0;t<g;++t)m=m<<1|s&1,s>>=1;for(t=m;t<e;t+=k)f[t]=g<<16|n;++h}++g;h<<=1;k<<=1}return[f,a,b]};function v(c,d){this.g=[];this.h=32768;this.c=this.f=this.d=this.k=0;this.input=r?new Uint8Array(c):c;this.l=!1;this.i=w;this.p=!1;if(d||!(d={}))d.index&&(this.d=d.index),d.bufferSize&&(this.h=d.bufferSize),d.bufferType&&(this.i=d.bufferType),d.resize&&(this.p=d.resize);switch(this.i){case x:this.a=32768;this.b=new (r?Uint8Array:Array)(32768+this.h+258);break;case w:this.a=0;this.b=new (r?Uint8Array:Array)(this.h);this.e=this.u;this.m=this.r;this.j=this.s;break;default:throw Error("invalid inflate mode");
|
|
}}var x=0,w=1;
|
|
v.prototype.t=function(){for(;!this.l;){var c=y(this,3);c&1&&(this.l=!0);c>>>=1;switch(c){case 0:var d=this.input,a=this.d,b=this.b,e=this.a,f=l,g=l,h=l,k=b.length,m=l;this.c=this.f=0;f=d[a++];if(f===l)throw Error("invalid uncompressed block header: LEN (first byte)");g=f;f=d[a++];if(f===l)throw Error("invalid uncompressed block header: LEN (second byte)");g|=f<<8;f=d[a++];if(f===l)throw Error("invalid uncompressed block header: NLEN (first byte)");h=f;f=d[a++];if(f===l)throw Error("invalid uncompressed block header: NLEN (second byte)");h|=
|
|
f<<8;if(g===~h)throw Error("invalid uncompressed block header: length verify");if(a+g>d.length)throw Error("input buffer is broken");switch(this.i){case x:for(;e+g>b.length;){m=k-e;g-=m;if(r)b.set(d.subarray(a,a+m),e),e+=m,a+=m;else for(;m--;)b[e++]=d[a++];this.a=e;b=this.e();e=this.a}break;case w:for(;e+g>b.length;)b=this.e({o:2});break;default:throw Error("invalid inflate mode");}if(r)b.set(d.subarray(a,a+g),e),e+=g,a+=g;else for(;g--;)b[e++]=d[a++];this.d=a;this.a=e;this.b=b;break;case 1:this.j(z,
|
|
A);break;case 2:B(this);break;default:throw Error("unknown BTYPE: "+c);}}return this.m()};
|
|
var C=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],D=r?new Uint16Array(C):C,E=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,258,258],F=r?new Uint16Array(E):E,G=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0],H=r?new Uint8Array(G):G,I=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577],J=r?new Uint16Array(I):I,K=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,
|
|
13],L=r?new Uint8Array(K):K,M=new (r?Uint8Array:Array)(288),N,O;N=0;for(O=M.length;N<O;++N)M[N]=143>=N?8:255>=N?9:279>=N?7:8;var z=u(M),P=new (r?Uint8Array:Array)(30),Q,R;Q=0;for(R=P.length;Q<R;++Q)P[Q]=5;var A=u(P);function y(c,d){for(var a=c.f,b=c.c,e=c.input,f=c.d,g;b<d;){g=e[f++];if(g===l)throw Error("input buffer is broken");a|=g<<b;b+=8}g=a&(1<<d)-1;c.f=a>>>d;c.c=b-d;c.d=f;return g}
|
|
function S(c,d){for(var a=c.f,b=c.c,e=c.input,f=c.d,g=d[0],h=d[1],k,m,s;b<h;){k=e[f++];if(k===l)break;a|=k<<b;b+=8}m=g[a&(1<<h)-1];s=m>>>16;c.f=a>>s;c.c=b-s;c.d=f;return m&65535}
|
|
function B(c){function d(a,c,b){var d,f,e,g;for(g=0;g<a;)switch(d=S(this,c),d){case 16:for(e=3+y(this,2);e--;)b[g++]=f;break;case 17:for(e=3+y(this,3);e--;)b[g++]=0;f=0;break;case 18:for(e=11+y(this,7);e--;)b[g++]=0;f=0;break;default:f=b[g++]=d}return b}var a=y(c,5)+257,b=y(c,5)+1,e=y(c,4)+4,f=new (r?Uint8Array:Array)(D.length),g,h,k,m;for(m=0;m<e;++m)f[D[m]]=y(c,3);g=u(f);h=new (r?Uint8Array:Array)(a);k=new (r?Uint8Array:Array)(b);c.j(u(d.call(c,a,g,h)),u(d.call(c,b,g,k)))}
|
|
v.prototype.j=function(c,d){var a=this.b,b=this.a;this.n=c;for(var e=a.length-258,f,g,h,k;256!==(f=S(this,c));)if(256>f)b>=e&&(this.a=b,a=this.e(),b=this.a),a[b++]=f;else{g=f-257;k=F[g];0<H[g]&&(k+=y(this,H[g]));f=S(this,d);h=J[f];0<L[f]&&(h+=y(this,L[f]));b>=e&&(this.a=b,a=this.e(),b=this.a);for(;k--;)a[b]=a[b++-h]}for(;8<=this.c;)this.c-=8,this.d--;this.a=b};
|
|
v.prototype.s=function(c,d){var a=this.b,b=this.a;this.n=c;for(var e=a.length,f,g,h,k;256!==(f=S(this,c));)if(256>f)b>=e&&(a=this.e(),e=a.length),a[b++]=f;else{g=f-257;k=F[g];0<H[g]&&(k+=y(this,H[g]));f=S(this,d);h=J[f];0<L[f]&&(h+=y(this,L[f]));b+k>e&&(a=this.e(),e=a.length);for(;k--;)a[b]=a[b++-h]}for(;8<=this.c;)this.c-=8,this.d--;this.a=b};
|
|
v.prototype.e=function(){var c=new (r?Uint8Array:Array)(this.a-32768),d=this.a-32768,a,b,e=this.b;if(r)c.set(e.subarray(32768,c.length));else{a=0;for(b=c.length;a<b;++a)c[a]=e[a+32768]}this.g.push(c);this.k+=c.length;if(r)e.set(e.subarray(d,d+32768));else for(a=0;32768>a;++a)e[a]=e[d+a];this.a=32768;return e};
|
|
v.prototype.u=function(c){var d,a=this.input.length/this.d+1|0,b,e,f,g=this.input,h=this.b;c&&("number"===typeof c.o&&(a=c.o),"number"===typeof c.q&&(a+=c.q));2>a?(b=(g.length-this.d)/this.n[2],f=258*(b/2)|0,e=f<h.length?h.length+f:h.length<<1):e=h.length*a;r?(d=new Uint8Array(e),d.set(h)):d=h;return this.b=d};
|
|
v.prototype.m=function(){var c=0,d=this.b,a=this.g,b,e=new (r?Uint8Array:Array)(this.k+(this.a-32768)),f,g,h,k;if(0===a.length)return r?this.b.subarray(32768,this.a):this.b.slice(32768,this.a);f=0;for(g=a.length;f<g;++f){b=a[f];h=0;for(k=b.length;h<k;++h)e[c++]=b[h]}f=32768;for(g=this.a;f<g;++f)e[c++]=d[f];this.g=[];return this.buffer=e};
|
|
v.prototype.r=function(){var c,d=this.a;r?this.p?(c=new Uint8Array(d),c.set(this.b.subarray(0,d))):c=this.b.subarray(0,d):(this.b.length>d&&(this.b.length=d),c=this.b);return this.buffer=c};q("Zlib.RawInflate",v);q("Zlib.RawInflate.prototype.decompress",v.prototype.t);var T={ADAPTIVE:w,BLOCK:x},U,V,W,X;if(Object.keys)U=Object.keys(T);else for(V in U=[],W=0,T)U[W++]=V;W=0;for(X=U.length;W<X;++W)V=U[W],q("Zlib.RawInflate.BufferType."+V,T[V]);}).call(this); //@ sourceMappingURL=rawinflate.min.js.map
|
|
|
|
|
|
}).call(context);
|
|
/*jshint +W004, +W030, +W032, +W033, +W034, +W040, +W056, +W061, +W064, +W093 */
|
|
|
|
var uncompress = function (input) {
|
|
var inflate = new context.Zlib.RawInflate(input);
|
|
return inflate.decompress();
|
|
};
|
|
|
|
var USE_TYPEDARRAY =
|
|
(typeof Uint8Array !== 'undefined') &&
|
|
(typeof Uint16Array !== 'undefined') &&
|
|
(typeof Uint32Array !== 'undefined');
|
|
|
|
|
|
// we add the compression method for JSZip
|
|
if(!JSZip.compressions["DEFLATE"]) {
|
|
JSZip.compressions["DEFLATE"] = {
|
|
magic : "\x08\x00",
|
|
uncompress : uncompress,
|
|
uncompressInputType : USE_TYPEDARRAY ? "uint8array" : "array"
|
|
};
|
|
} else {
|
|
JSZip.compressions["DEFLATE"].uncompress = uncompress;
|
|
JSZip.compressions["DEFLATE"].uncompressInputType = USE_TYPEDARRAY ? "uint8array" : "array";
|
|
}
|
|
})();
|
|
|
|
// enforcing Stuk's coding style
|
|
// vim: set shiftwidth=3 softtabstop=3:
|
|
/**
|
|
|
|
JSZip - A Javascript class for generating and reading zip files
|
|
<http://stuartk.com/jszip>
|
|
|
|
(c) 2011 David Duponchel <d.duponchel@gmail.com>
|
|
Dual licenced under the MIT license or GPLv3. See LICENSE.markdown.
|
|
|
|
**/
|
|
/*global JSZip */
|
|
(function (root) {
|
|
"use strict";
|
|
|
|
var MAX_VALUE_16BITS = 65535;
|
|
var MAX_VALUE_32BITS = -1; // well, "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF" is parsed as -1
|
|
|
|
/**
|
|
* Prettify a string read as binary.
|
|
* @param {string} str the string to prettify.
|
|
* @return {string} a pretty string.
|
|
*/
|
|
var pretty = function (str) {
|
|
var res = '', code, i;
|
|
for (i = 0; i < (str||"").length; i++) {
|
|
code = str.charCodeAt(i);
|
|
res += '\\x' + (code < 16 ? "0" : "") + code.toString(16).toUpperCase();
|
|
}
|
|
return res;
|
|
};
|
|
|
|
/**
|
|
* Find a compression registered in JSZip.
|
|
* @param {string} compressionMethod the method magic to find.
|
|
* @return {Object|null} the JSZip compression object, null if none found.
|
|
*/
|
|
var findCompression = function (compressionMethod) {
|
|
for (var method in JSZip.compressions) {
|
|
if( !JSZip.compressions.hasOwnProperty(method) ) { continue; }
|
|
if (JSZip.compressions[method].magic === compressionMethod) {
|
|
return JSZip.compressions[method];
|
|
}
|
|
}
|
|
return null;
|
|
};
|
|
|
|
// class DataReader {{{
|
|
/**
|
|
* Read bytes from a source.
|
|
* Developer tip : when debugging, a watch on pretty(this.reader.data.slice(this.reader.index))
|
|
* is very useful :)
|
|
* @constructor
|
|
* @param {String|ArrayBuffer|Uint8Array|Buffer} data the data to read.
|
|
*/
|
|
function DataReader(data) {
|
|
this.data = null; // type : see implementation
|
|
this.length = 0;
|
|
this.index = 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 specifed 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 < 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 JSZip.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
|
|
},
|
|
/**
|
|
* Get the next date.
|
|
* @return {Date} the date.
|
|
*/
|
|
readDate : function () {
|
|
var dostime = this.readInt(4);
|
|
return new Date(
|
|
((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
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Read bytes from a string.
|
|
* @constructor
|
|
* @param {String} data the data to read.
|
|
*/
|
|
function StringReader(data, optimizedBinaryString) {
|
|
this.data = data;
|
|
if (!optimizedBinaryString) {
|
|
this.data = JSZip.utils.string2binary(this.data);
|
|
}
|
|
this.length = this.data.length;
|
|
this.index = 0;
|
|
}
|
|
StringReader.prototype = new DataReader();
|
|
/**
|
|
* @see DataReader.byteAt
|
|
*/
|
|
StringReader.prototype.byteAt = function(i) {
|
|
return this.data.charCodeAt(i);
|
|
};
|
|
/**
|
|
* @see DataReader.lastIndexOfSignature
|
|
*/
|
|
StringReader.prototype.lastIndexOfSignature = function (sig) {
|
|
return this.data.lastIndexOf(sig);
|
|
};
|
|
/**
|
|
* @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.index, this.index + size);
|
|
this.index += size;
|
|
return result;
|
|
};
|
|
|
|
|
|
/**
|
|
* Read bytes from an Uin8Array.
|
|
* @constructor
|
|
* @param {Uint8Array} data the data to read.
|
|
*/
|
|
function Uint8ArrayReader(data) {
|
|
if (data) {
|
|
this.data = data;
|
|
this.length = this.data.length;
|
|
this.index = 0;
|
|
}
|
|
}
|
|
Uint8ArrayReader.prototype = new DataReader();
|
|
/**
|
|
* @see DataReader.byteAt
|
|
*/
|
|
Uint8ArrayReader.prototype.byteAt = function(i) {
|
|
return this.data[i];
|
|
};
|
|
/**
|
|
* @see DataReader.lastIndexOfSignature
|
|
*/
|
|
Uint8ArrayReader.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;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
};
|
|
/**
|
|
* @see DataReader.readData
|
|
*/
|
|
Uint8ArrayReader.prototype.readData = function (size) {
|
|
this.checkOffset(size);
|
|
var result = this.data.subarray(this.index, this.index + size);
|
|
this.index += size;
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Read bytes from a Buffer.
|
|
* @constructor
|
|
* @param {Buffer} data the data to read.
|
|
*/
|
|
function NodeBufferReader(data) {
|
|
this.data = data;
|
|
this.length = this.data.length;
|
|
this.index = 0;
|
|
}
|
|
NodeBufferReader.prototype = new Uint8ArrayReader();
|
|
|
|
/**
|
|
* @see DataReader.readData
|
|
*/
|
|
NodeBufferReader.prototype.readData = function (size) {
|
|
this.checkOffset(size);
|
|
var result = this.data.slice(this.index, this.index + size);
|
|
this.index += size;
|
|
return result;
|
|
};
|
|
// }}} end of DataReader
|
|
|
|
// class ZipEntry {{{
|
|
/**
|
|
* An entry in the zip file.
|
|
* @constructor
|
|
* @param {Object} options Options of the current file.
|
|
* @param {Object} loadOptions Options for loading the data.
|
|
*/
|
|
function ZipEntry(options, loadOptions) {
|
|
this.options = options;
|
|
this.loadOptions = loadOptions;
|
|
}
|
|
ZipEntry.prototype = {
|
|
/**
|
|
* say if the file is encrypted.
|
|
* @return {boolean} true if the file is encrypted, false otherwise.
|
|
*/
|
|
isEncrypted : function () {
|
|
// bit 1 is set
|
|
return (this.bitFlag & 0x0001) === 0x0001;
|
|
},
|
|
/**
|
|
* say if the file has utf-8 filename/comment.
|
|
* @return {boolean} true if the filename/comment is in utf-8, false otherwise.
|
|
*/
|
|
useUTF8 : function () {
|
|
// bit 11 is set
|
|
return (this.bitFlag & 0x0800) === 0x0800;
|
|
},
|
|
/**
|
|
* Prepare the function used to generate the compressed content from this ZipFile.
|
|
* @param {DataReader} reader the reader to use.
|
|
* @param {number} from the offset from where we should read the data.
|
|
* @param {number} length the length of the data to read.
|
|
* @return {Function} the callback to get the compressed content (the type depends of the DataReader class).
|
|
*/
|
|
prepareCompressedContent : function (reader, from, length) {
|
|
return function () {
|
|
var previousIndex = reader.index;
|
|
reader.setIndex(from);
|
|
var compressedFileData = reader.readData(length);
|
|
reader.setIndex(previousIndex);
|
|
|
|
return compressedFileData;
|
|
};
|
|
},
|
|
/**
|
|
* Prepare the function used to generate the uncompressed content from this ZipFile.
|
|
* @param {DataReader} reader the reader to use.
|
|
* @param {number} from the offset from where we should read the data.
|
|
* @param {number} length the length of the data to read.
|
|
* @param {JSZip.compression} compression the compression used on this file.
|
|
* @param {number} uncompressedSize the uncompressed size to expect.
|
|
* @return {Function} the callback to get the uncompressed content (the type depends of the DataReader class).
|
|
*/
|
|
prepareContent : function (reader, from, length, compression, uncompressedSize) {
|
|
return function () {
|
|
|
|
var compressedFileData = JSZip.utils.transformTo(compression.uncompressInputType, this.getCompressedContent());
|
|
var uncompressedFileData = compression.uncompress(compressedFileData);
|
|
|
|
if (uncompressedFileData.length !== uncompressedSize) {
|
|
throw new Error("Bug : uncompressed data size mismatch");
|
|
}
|
|
|
|
return uncompressedFileData;
|
|
};
|
|
},
|
|
/**
|
|
* Read the local part of a zip file and add the info in this object.
|
|
* @param {DataReader} reader the reader to use.
|
|
*/
|
|
readLocalPart : function(reader) {
|
|
var compression, localExtraFieldsLength;
|
|
|
|
// we already know everything from the central dir !
|
|
// If the central dir data are false, we are doomed.
|
|
// On the bright side, the local part is scary : zip64, data descriptors, both, etc.
|
|
// The less data we get here, the more reliable this should be.
|
|
// Let's skip the whole header and dash to the data !
|
|
reader.skip(22);
|
|
// in some zip created on windows, the filename stored in the central dir contains \ instead of /.
|
|
// Strangely, the filename here is OK.
|
|
// I would love to treat these zip files as corrupted (see http://www.info-zip.org/FAQ.html#backslashes
|
|
// or APPNOTE#4.4.17.1, "All slashes MUST be forward slashes '/'") but there are a lot of bad zip generators...
|
|
// Search "unzip mismatching "local" filename continuing with "central" filename version" on
|
|
// the internet.
|
|
//
|
|
// I think I see the logic here : the central directory is used to display
|
|
// content and the local directory is used to extract the files. Mixing / and \
|
|
// may be used to display \ to windows users and use / when extracting the files.
|
|
// Unfortunately, this lead also to some issues : http://seclists.org/fulldisclosure/2009/Sep/394
|
|
this.fileNameLength = reader.readInt(2);
|
|
localExtraFieldsLength = reader.readInt(2); // can't be sure this will be the same as the central dir
|
|
this.fileName = reader.readString(this.fileNameLength);
|
|
reader.skip(localExtraFieldsLength);
|
|
|
|
if (this.compressedSize == -1 || this.uncompressedSize == -1) {
|
|
throw new Error("Bug or corrupted zip : didn't get enough informations from the central directory " +
|
|
"(compressedSize == -1 || uncompressedSize == -1)");
|
|
}
|
|
|
|
compression = findCompression(this.compressionMethod);
|
|
if (compression === null) { // no compression found
|
|
throw new Error("Corrupted zip : compression " + pretty(this.compressionMethod) +
|
|
" unknown (inner file : " + this.fileName + ")");
|
|
}
|
|
this.decompressed = new JSZip.CompressedObject();
|
|
this.decompressed.compressedSize = this.compressedSize;
|
|
this.decompressed.uncompressedSize = this.uncompressedSize;
|
|
this.decompressed.crc32 = this.crc32;
|
|
this.decompressed.compressionMethod = this.compressionMethod;
|
|
this.decompressed.getCompressedContent = this.prepareCompressedContent(reader, reader.index, this.compressedSize, compression);
|
|
this.decompressed.getContent = this.prepareContent(reader, reader.index, this.compressedSize, compression, this.uncompressedSize);
|
|
|
|
// we need to compute the crc32...
|
|
if (this.loadOptions.checkCRC32) {
|
|
this.decompressed = JSZip.utils.transformTo("string", this.decompressed.getContent());
|
|
if (JSZip.prototype.crc32(this.decompressed) !== this.crc32) {
|
|
throw new Error("Corrupted zip : CRC32 mismatch");
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Read the central part of a zip file and add the info in this object.
|
|
* @param {DataReader} reader the reader to use.
|
|
*/
|
|
readCentralPart : function(reader) {
|
|
this.versionMadeBy = reader.readString(2);
|
|
this.versionNeeded = reader.readInt(2);
|
|
this.bitFlag = reader.readInt(2);
|
|
this.compressionMethod = reader.readString(2);
|
|
this.date = reader.readDate();
|
|
this.crc32 = reader.readInt(4);
|
|
this.compressedSize = reader.readInt(4);
|
|
this.uncompressedSize = reader.readInt(4);
|
|
this.fileNameLength = reader.readInt(2);
|
|
this.extraFieldsLength = reader.readInt(2);
|
|
this.fileCommentLength = reader.readInt(2);
|
|
this.diskNumberStart = reader.readInt(2);
|
|
this.internalFileAttributes = reader.readInt(2);
|
|
this.externalFileAttributes = reader.readInt(4);
|
|
this.localHeaderOffset = reader.readInt(4);
|
|
|
|
if (this.isEncrypted()) {
|
|
throw new Error("Encrypted zip are not supported");
|
|
}
|
|
|
|
this.fileName = reader.readString(this.fileNameLength);
|
|
this.readExtraFields(reader);
|
|
this.parseZIP64ExtraField(reader);
|
|
this.fileComment = reader.readString(this.fileCommentLength);
|
|
|
|
// warning, this is true only for zip with madeBy == DOS (plateform dependent feature)
|
|
this.dir = this.externalFileAttributes & 0x00000010 ? true : false;
|
|
},
|
|
/**
|
|
* Parse the ZIP64 extra field and merge the info in the current ZipEntry.
|
|
* @param {DataReader} reader the reader to use.
|
|
*/
|
|
parseZIP64ExtraField : function(reader) {
|
|
|
|
if(!this.extraFields[0x0001]) {
|
|
return;
|
|
}
|
|
|
|
// should be something, preparing the extra reader
|
|
var extraReader = new StringReader(this.extraFields[0x0001].value);
|
|
|
|
// I really hope that these 64bits integer can fit in 32 bits integer, because js
|
|
// won't let us have more.
|
|
if(this.uncompressedSize === MAX_VALUE_32BITS) {
|
|
this.uncompressedSize = extraReader.readInt(8);
|
|
}
|
|
if(this.compressedSize === MAX_VALUE_32BITS) {
|
|
this.compressedSize = extraReader.readInt(8);
|
|
}
|
|
if(this.localHeaderOffset === MAX_VALUE_32BITS) {
|
|
this.localHeaderOffset = extraReader.readInt(8);
|
|
}
|
|
if(this.diskNumberStart === MAX_VALUE_32BITS) {
|
|
this.diskNumberStart = extraReader.readInt(4);
|
|
}
|
|
},
|
|
/**
|
|
* Read the central part of a zip file and add the info in this object.
|
|
* @param {DataReader} reader the reader to use.
|
|
*/
|
|
readExtraFields : function(reader) {
|
|
var start = reader.index,
|
|
extraFieldId,
|
|
extraFieldLength,
|
|
extraFieldValue;
|
|
|
|
this.extraFields = this.extraFields || {};
|
|
|
|
while (reader.index < start + this.extraFieldsLength) {
|
|
extraFieldId = reader.readInt(2);
|
|
extraFieldLength = reader.readInt(2);
|
|
extraFieldValue = reader.readString(extraFieldLength);
|
|
|
|
this.extraFields[extraFieldId] = {
|
|
id: extraFieldId,
|
|
length: extraFieldLength,
|
|
value: extraFieldValue
|
|
};
|
|
}
|
|
},
|
|
/**
|
|
* Apply an UTF8 transformation if needed.
|
|
*/
|
|
handleUTF8 : function() {
|
|
if (this.useUTF8()) {
|
|
this.fileName = JSZip.prototype.utf8decode(this.fileName);
|
|
this.fileComment = JSZip.prototype.utf8decode(this.fileComment);
|
|
}
|
|
}
|
|
};
|
|
// }}} end of ZipEntry
|
|
|
|
// class ZipEntries {{{
|
|
/**
|
|
* All the entries in the zip file.
|
|
* @constructor
|
|
* @param {String|ArrayBuffer|Uint8Array|Buffer} data the binary data to load.
|
|
* @param {Object} loadOptions Options for loading the data.
|
|
*/
|
|
function ZipEntries(data, loadOptions) {
|
|
this.files = [];
|
|
this.loadOptions = loadOptions;
|
|
if (data) {
|
|
this.load(data);
|
|
}
|
|
}
|
|
ZipEntries.prototype = {
|
|
/**
|
|
* Check that the reader is on the speficied signature.
|
|
* @param {string} expectedSignature the expected signature.
|
|
* @throws {Error} if it is an other signature.
|
|
*/
|
|
checkSignature : function(expectedSignature) {
|
|
var signature = this.reader.readString(4);
|
|
if (signature !== expectedSignature) {
|
|
throw new Error("Corrupted zip or bug : unexpected signature " +
|
|
"(" + pretty(signature) + ", expected " + pretty(expectedSignature) + ")");
|
|
}
|
|
},
|
|
/**
|
|
* Read the end of the central directory.
|
|
*/
|
|
readBlockEndOfCentral : function () {
|
|
this.diskNumber = this.reader.readInt(2);
|
|
this.diskWithCentralDirStart = this.reader.readInt(2);
|
|
this.centralDirRecordsOnThisDisk = this.reader.readInt(2);
|
|
this.centralDirRecords = this.reader.readInt(2);
|
|
this.centralDirSize = this.reader.readInt(4);
|
|
this.centralDirOffset = this.reader.readInt(4);
|
|
|
|
this.zipCommentLength = this.reader.readInt(2);
|
|
this.zipComment = this.reader.readString(this.zipCommentLength);
|
|
},
|
|
/**
|
|
* Read the end of the Zip 64 central directory.
|
|
* Not merged with the method readEndOfCentral :
|
|
* The end of central can coexist with its Zip64 brother,
|
|
* I don't want to read the wrong number of bytes !
|
|
*/
|
|
readBlockZip64EndOfCentral : function () {
|
|
this.zip64EndOfCentralSize = this.reader.readInt(8);
|
|
this.versionMadeBy = this.reader.readString(2);
|
|
this.versionNeeded = this.reader.readInt(2);
|
|
this.diskNumber = this.reader.readInt(4);
|
|
this.diskWithCentralDirStart = this.reader.readInt(4);
|
|
this.centralDirRecordsOnThisDisk = this.reader.readInt(8);
|
|
this.centralDirRecords = this.reader.readInt(8);
|
|
this.centralDirSize = this.reader.readInt(8);
|
|
this.centralDirOffset = this.reader.readInt(8);
|
|
|
|
this.zip64ExtensibleData = {};
|
|
var extraDataSize = this.zip64EndOfCentralSize - 44,
|
|
index = 0,
|
|
extraFieldId,
|
|
extraFieldLength,
|
|
extraFieldValue;
|
|
while(index < extraDataSize) {
|
|
extraFieldId = this.reader.readInt(2);
|
|
extraFieldLength = this.reader.readInt(4);
|
|
extraFieldValue = this.reader.readString(extraFieldLength);
|
|
this.zip64ExtensibleData[extraFieldId] = {
|
|
id: extraFieldId,
|
|
length: extraFieldLength,
|
|
value: extraFieldValue
|
|
};
|
|
}
|
|
},
|
|
/**
|
|
* Read the end of the Zip 64 central directory locator.
|
|
*/
|
|
readBlockZip64EndOfCentralLocator : function () {
|
|
this.diskWithZip64CentralDirStart = this.reader.readInt(4);
|
|
this.relativeOffsetEndOfZip64CentralDir = this.reader.readInt(8);
|
|
this.disksCount = this.reader.readInt(4);
|
|
if (this.disksCount > 1) {
|
|
throw new Error("Multi-volumes zip are not supported");
|
|
}
|
|
},
|
|
/**
|
|
* Read the local files, based on the offset read in the central part.
|
|
*/
|
|
readLocalFiles : function() {
|
|
var i, file;
|
|
for(i = 0; i < this.files.length; i++) {
|
|
file = this.files[i];
|
|
this.reader.setIndex(file.localHeaderOffset);
|
|
this.checkSignature(JSZip.signature.LOCAL_FILE_HEADER);
|
|
file.readLocalPart(this.reader);
|
|
file.handleUTF8();
|
|
}
|
|
},
|
|
/**
|
|
* Read the central directory.
|
|
*/
|
|
readCentralDir : function() {
|
|
var file;
|
|
|
|
this.reader.setIndex(this.centralDirOffset);
|
|
while(this.reader.readString(4) === JSZip.signature.CENTRAL_FILE_HEADER) {
|
|
file = new ZipEntry({
|
|
zip64: this.zip64
|
|
}, this.loadOptions);
|
|
file.readCentralPart(this.reader);
|
|
this.files.push(file);
|
|
}
|
|
},
|
|
/**
|
|
* Read the end of central directory.
|
|
*/
|
|
readEndOfCentral : function() {
|
|
var offset = this.reader.lastIndexOfSignature(JSZip.signature.CENTRAL_DIRECTORY_END);
|
|
if (offset === -1) {
|
|
throw new Error("Corrupted zip : can't find end of central directory");
|
|
}
|
|
this.reader.setIndex(offset);
|
|
this.checkSignature(JSZip.signature.CENTRAL_DIRECTORY_END);
|
|
this.readBlockEndOfCentral();
|
|
|
|
|
|
/* extract from the zip spec :
|
|
4) If one of the fields in the end of central directory
|
|
record is too small to hold required data, the field
|
|
should be set to -1 (0xFFFF or 0xFFFFFFFF) and the
|
|
ZIP64 format record should be created.
|
|
5) The end of central directory record and the
|
|
Zip64 end of central directory locator record must
|
|
reside on the same disk when splitting or spanning
|
|
an archive.
|
|
*/
|
|
if (this.diskNumber === MAX_VALUE_16BITS ||
|
|
this.diskWithCentralDirStart === MAX_VALUE_16BITS ||
|
|
this.centralDirRecordsOnThisDisk === MAX_VALUE_16BITS ||
|
|
this.centralDirRecords === MAX_VALUE_16BITS ||
|
|
this.centralDirSize === MAX_VALUE_32BITS ||
|
|
this.centralDirOffset === MAX_VALUE_32BITS
|
|
) {
|
|
this.zip64 = true;
|
|
|
|
/*
|
|
Warning : the zip64 extension is supported, but ONLY if the 64bits integer read from
|
|
the zip file can fit into a 32bits integer. This cannot be solved : Javascript represents
|
|
all numbers as 64-bit double precision IEEE 754 floating point numbers.
|
|
So, we have 53bits for integers and bitwise operations treat everything as 32bits.
|
|
see https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/Bitwise_Operators
|
|
and http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf section 8.5
|
|
*/
|
|
|
|
// should look for a zip64 EOCD locator
|
|
offset = this.reader.lastIndexOfSignature(JSZip.signature.ZIP64_CENTRAL_DIRECTORY_LOCATOR);
|
|
if (offset === -1) {
|
|
throw new Error("Corrupted zip : can't find the ZIP64 end of central directory locator");
|
|
}
|
|
this.reader.setIndex(offset);
|
|
this.checkSignature(JSZip.signature.ZIP64_CENTRAL_DIRECTORY_LOCATOR);
|
|
this.readBlockZip64EndOfCentralLocator();
|
|
|
|
// now the zip64 EOCD record
|
|
this.reader.setIndex(this.relativeOffsetEndOfZip64CentralDir);
|
|
this.checkSignature(JSZip.signature.ZIP64_CENTRAL_DIRECTORY_END);
|
|
this.readBlockZip64EndOfCentral();
|
|
}
|
|
},
|
|
prepareReader : function (data) {
|
|
var type = JSZip.utils.getTypeOf(data);
|
|
if (type === "string" && !JSZip.support.uint8array) {
|
|
this.reader = new StringReader(data, this.loadOptions.optimizedBinaryString);
|
|
} else if (type === "nodebuffer") {
|
|
this.reader = new NodeBufferReader(data);
|
|
} else {
|
|
this.reader = new Uint8ArrayReader(JSZip.utils.transformTo("uint8array", data));
|
|
}
|
|
},
|
|
/**
|
|
* Read a zip file and create ZipEntries.
|
|
* @param {String|ArrayBuffer|Uint8Array|Buffer} data the binary string representing a zip file.
|
|
*/
|
|
load : function(data) {
|
|
this.prepareReader(data);
|
|
this.readEndOfCentral();
|
|
this.readCentralDir();
|
|
this.readLocalFiles();
|
|
}
|
|
};
|
|
// }}} end of ZipEntries
|
|
|
|
/**
|
|
* Implementation of the load method of JSZip.
|
|
* It uses the above classes to decode a zip file, and load every files.
|
|
* @param {String|ArrayBuffer|Uint8Array|Buffer} data the data to load.
|
|
* @param {Object} options Options for loading the data.
|
|
* options.base64 : is the data in base64 ? default : false
|
|
*/
|
|
JSZip.prototype.load = function(data, options) {
|
|
var files, zipEntries, i, input;
|
|
options = options || {};
|
|
if(options.base64) {
|
|
data = JSZip.base64.decode(data);
|
|
}
|
|
|
|
zipEntries = new ZipEntries(data, options);
|
|
files = zipEntries.files;
|
|
for (i = 0; i < files.length; i++) {
|
|
input = files[i];
|
|
this.file(input.fileName, input.decompressed, {
|
|
binary:true,
|
|
optimizedBinaryString:true,
|
|
date:input.date,
|
|
dir:input.dir
|
|
});
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
}(this));
|
|
if (typeof exports !== 'undefined') exports.JSZip = JSZip;
|
|
// enforcing Stuk's coding style
|
|
// vim: set shiftwidth=3 softtabstop=3 foldmethod=marker:
|