document-server-integration/web/documentserver-example/nodejs/helpers/fileUtility.js

/*
 *
 * (c) Copyright Ascensio System Limited 2010-2017
 *
 * The MIT License (MIT)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
*/

var configServer = require('config').get('server');
var siteUrl = configServer.get('siteUrl');
var tempStorageUrl = siteUrl + configServer.get('tempStorageUrl');

var fileUtility = {};

fileUtility.getFileName = function (url, withoutExtension) {
    if (!url) return "";

    var filename;

    if (tempStorageUrl && url.indexOf(tempStorageUrl) == 0) {
        var params = getUrlParams(url);
        filename = params == null ? null : params["filename"];
    } else {
        var parts = url.toLowerCase().split("/");
        fileName = parts.pop();
    }

    if (withoutExtension) {
        var ext = fileUtility.getFileExtension(fileName);
        return fileName.replace(ext, "");
    }

    return fileName;
};

fileUtility.getFileExtension = function (url, withoutDot) {
    if (!url) return null;

    var fileName = fileUtility.getFileName(url);

    var parts = fileName.toLowerCase().split(".");

    return withoutDot ? parts.pop() : "." + parts.pop();
};

fileUtility.getFileType = function (url) {
    var ext = fileUtility.getFileExtension(url);

    if (fileUtility.documentExts.indexOf(ext) != -1) return fileUtility.fileType.text;
    if (fileUtility.spreadsheetExts.indexOf(ext) != -1) return fileUtility.fileType.spreadsheet;
    if (fileUtility.presentationExts.indexOf(ext) != -1) return fileUtility.fileType.presentation;

    return fileUtility.fileType.text;
}

fileUtility.fileType = {
    text: "text",
    spreadsheet: "spreadsheet",
    presentation: "presentation"
}

fileUtility.documentExts = [".docx", ".docm", ".doc", ".odt", ".rtf", ".txt", ".html", ".htm", ".mht", ".pdf", ".djvu", ".fb2", ".epub", ".xps"];

fileUtility.spreadsheetExts = [".xls", ".xlsx", ".xlsm", ".ods", ".csv"];

fileUtility.presentationExts = [".pps", ".ppsx", ".ppsm", ".ppt", ".pptx", ".pptm", ".odp"];

function getUrlParams(url) {
    try {
        var query = url.split("?").pop();
        var params = query.split("&");
        var map = {};
        for (var i = 0; i < params.length; i++) {
            var parts = param.split("=");
            map[parts[0]] = parts[1];
        }
        return map;
    }
    catch (ex) {
        return null;
    }
}

module.exports = fileUtility;