vue-files-preview-inno/es/node_modules/epubjs/src/archive.mjs.map

A tool for previewing files such as doc, excel, pdf, image, markdown, txt, audio, and video and so on.

{"version":3,"file":"archive.mjs","sources":["../../../../../node_modules/epubjs/src/archive.js"],"sourcesContent":["import {defer, isXml, parse} from \"./utils/core\";\nimport request from \"./utils/request\";\nimport mime from \"./utils/mime\";\nimport Path from \"./utils/path\";\nimport JSZip from \"jszip/dist/jszip\";\n\n/**\n * Handles Unzipping a requesting files from an Epub Archive\n * @class\n */\nclass Archive {\n\n\tconstructor() {\n\t\tthis.zip = undefined;\n\t\tthis.urlCache = {};\n\n\t\tthis.checkRequirements();\n\n\t}\n\n\t/**\n\t * Checks to see if JSZip exists in global namspace,\n\t * Requires JSZip if it isn't there\n\t * @private\n\t */\n\tcheckRequirements(){\n\t\ttry {\n\t\t\tthis.zip = new JSZip();\n\t\t} catch (e) {\n\t\t\tthrow new Error(\"JSZip lib not loaded\");\n\t\t}\n\t}\n\n\t/**\n\t * Open an archive\n\t * @param  {binary} input\n\t * @param  {boolean} [isBase64] tells JSZip if the input data is base64 encoded\n\t * @return {Promise} zipfile\n\t */\n\topen(input, isBase64){\n\t\treturn this.zip.loadAsync(input, {\"base64\": isBase64});\n\t}\n\n\t/**\n\t * Load and Open an archive\n\t * @param  {string} zipUrl\n\t * @param  {boolean} [isBase64] tells JSZip if the input data is base64 encoded\n\t * @return {Promise} zipfile\n\t */\n\topenUrl(zipUrl, isBase64){\n\t\treturn request(zipUrl, \"binary\")\n\t\t\t.then(function(data){\n\t\t\t\treturn this.zip.loadAsync(data, {\"base64\": isBase64});\n\t\t\t}.bind(this));\n\t}\n\n\t/**\n\t * Request a url from the archive\n\t * @param  {string} url  a url to request from the archive\n\t * @param  {string} [type] specify the type of the returned result\n\t * @return {Promise<Blob | string | JSON | Document | XMLDocument>}\n\t */\n\trequest(url, type){\n\t\tvar deferred = new defer();\n\t\tvar response;\n\t\tvar path = new Path(url);\n\n\t\t// If type isn't set, determine it from the file extension\n\t\tif(!type) {\n\t\t\ttype = path.extension;\n\t\t}\n\n\t\tif(type == \"blob\"){\n\t\t\tresponse = this.getBlob(url);\n\t\t} else {\n\t\t\tresponse = this.getText(url);\n\t\t}\n\n\t\tif (response) {\n\t\t\tresponse.then(function (r) {\n\t\t\t\tlet result = this.handleResponse(r, type);\n\t\t\t\tdeferred.resolve(result);\n\t\t\t}.bind(this));\n\t\t} else {\n\t\t\tdeferred.reject({\n\t\t\t\tmessage : \"File not found in the epub: \" + url,\n\t\t\t\tstack : new Error().stack\n\t\t\t});\n\t\t}\n\t\treturn deferred.promise;\n\t}\n\n\t/**\n\t * Handle the response from request\n\t * @private\n\t * @param  {any} response\n\t * @param  {string} [type]\n\t * @return {any} the parsed result\n\t */\n\thandleResponse(response, type){\n\t\tvar r;\n\n\t\tif(type == \"json\") {\n\t\t\tr = JSON.parse(response);\n\t\t}\n\t\telse\n\t\tif(isXml(type)) {\n\t\t\tr = parse(response, \"text/xml\");\n\t\t}\n\t\telse\n\t\tif(type == \"xhtml\") {\n\t\t\tr = parse(response, \"application/xhtml+xml\");\n\t\t}\n\t\telse\n\t\tif(type == \"html\" || type == \"htm\") {\n\t\t\tr = parse(response, \"text/html\");\n\t\t } else {\n\t\t\t r = response;\n\t\t }\n\n\t\treturn r;\n\t}\n\n\t/**\n\t * Get a Blob from Archive by Url\n\t * @param  {string} url\n\t * @param  {string} [mimeType]\n\t * @return {Blob}\n\t */\n\tgetBlob(url, mimeType){\n\t\tvar decodededUrl = window.decodeURIComponent(url.substr(1)); // Remove first slash\n\t\tvar entry = this.zip.file(decodededUrl);\n\n\t\tif(entry) {\n\t\t\tmimeType = mimeType || mime.lookup(entry.name);\n\t\t\treturn entry.async(\"uint8array\").then(function(uint8array) {\n\t\t\t\treturn new Blob([uint8array], {type : mimeType});\n\t\t\t});\n\t\t}\n\t}\n\n\t/**\n\t * Get Text from Archive by Url\n\t * @param  {string} url\n\t * @param  {string} [encoding]\n\t * @return {string}\n\t */\n\tgetText(url, encoding){\n\t\tvar decodededUrl = window.decodeURIComponent(url.substr(1)); // Remove first slash\n\t\tvar entry = this.zip.file(decodededUrl);\n\n\t\tif(entry) {\n\t\t\treturn entry.async(\"string\").then(function(text) {\n\t\t\t\treturn text;\n\t\t\t});\n\t\t}\n\t}\n\n\t/**\n\t * Get a base64 encoded result from Archive by Url\n\t * @param  {string} url\n\t * @param  {string} [mimeType]\n\t * @return {string} base64 encoded\n\t */\n\tgetBase64(url, mimeType){\n\t\tvar decodededUrl = window.decodeURIComponent(url.substr(1)); // Remove first slash\n\t\tvar entry = this.zip.file(decodededUrl);\n\n\t\tif(entry) {\n\t\t\tmimeType = mimeType || mime.lookup(entry.name);\n\t\t\treturn entry.async(\"base64\").then(function(data) {\n\t\t\t\treturn \"data:\" + mimeType + \";base64,\" + data;\n\t\t\t});\n\t\t}\n\t}\n\n\t/**\n\t * Create a Url from an unarchived item\n\t * @param  {string} url\n\t * @param  {object} [options.base64] use base64 encoding or blob url\n\t * @return {Promise} url promise with Url string\n\t */\n\tcreateUrl(url, options){\n\t\tvar deferred = new defer();\n\t\tvar _URL = window.URL || window.webkitURL || window.mozURL;\n\t\tvar tempUrl;\n\t\tvar response;\n\t\tvar useBase64 = options && options.base64;\n\n\t\tif(url in this.urlCache) {\n\t\t\tdeferred.resolve(this.urlCache[url]);\n\t\t\treturn deferred.promise;\n\t\t}\n\n\t\tif (useBase64) {\n\t\t\tresponse = this.getBase64(url);\n\n\t\t\tif (response) {\n\t\t\t\tresponse.then(function(tempUrl) {\n\n\t\t\t\t\tthis.urlCache[url] = tempUrl;\n\t\t\t\t\tdeferred.resolve(tempUrl);\n\n\t\t\t\t}.bind(this));\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tresponse = this.getBlob(url);\n\n\t\t\tif (response) {\n\t\t\t\tresponse.then(function(blob) {\n\n\t\t\t\t\ttempUrl = _URL.createObjectURL(blob);\n\t\t\t\t\tthis.urlCache[url] = tempUrl;\n\t\t\t\t\tdeferred.resolve(tempUrl);\n\n\t\t\t\t}.bind(this));\n\n\t\t\t}\n\t\t}\n\n\n\t\tif (!response) {\n\t\t\tdeferred.reject({\n\t\t\t\tmessage : \"File not found in the epub: \" + url,\n\t\t\t\tstack : new Error().stack\n\t\t\t});\n\t\t}\n\n\t\treturn deferred.promise;\n\t}\n\n\t/**\n\t * Revoke Temp Url for a archive item\n\t * @param  {string} url url of the item in the archive\n\t */\n\trevokeUrl(url){\n\t\tvar _URL = window.URL || window.webkitURL || window.mozURL;\n\t\tvar fromCache = this.urlCache[url];\n\t\tif(fromCache) _URL.revokeObjectURL(fromCache);\n\t}\n\n\tdestroy() {\n\t\tvar _URL = window.URL || window.webkitURL || window.mozURL;\n\t\tfor (let fromCache in this.urlCache) {\n\t\t\t_URL.revokeObjectURL(fromCache);\n\t\t}\n\t\tthis.zip = undefined;\n\t\tthis.urlCache = {};\n\t}\n}\n\nexport default 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