130 lines
3.3 KiB
JavaScript
130 lines
3.3 KiB
JavaScript
/**
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* Handles the export requests
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*/
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/*
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* 2011 Peter 'Pita' Martischka (Primary Technology Ltd)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS-IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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var exporthtml = require("../utils/ExportHtml");
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var padManager = require("../db/PadManager");
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var async = require("async");
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var fs = require("fs");
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var settings = require('../utils/Settings');
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var os = require('os');
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//load abiword only if its enabled
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if(settings.abiword != null)
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var abiword = require("../utils/Abiword");
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var tempDirectory = "/tmp";
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//tempDirectory changes if the operating system is windows
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if(os.type().indexOf("Windows") > -1)
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{
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tempDirectory = process.env.TEMP;
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}
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/**
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* do a requested export
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*/
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exports.doExport = function(req, res, padId, type)
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{
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//tell the browser that this is a downloadable file
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res.attachment(padId + "." + type);
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//if this is a plain text export, we can do this directly
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if(type == "txt")
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{
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padManager.getPad(padId, function(err, pad)
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{
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if(err)
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throw err;
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res.send(pad.text());
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});
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}
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else
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{
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var html;
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var randNum;
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var srcFile, destFile;
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async.series([
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//render the html document
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function(callback)
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{
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exporthtml.getPadHTMLDocument(padId, null, false, function(err, _html)
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{
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html = _html;
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callback(err);
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});
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},
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//decide what to do with the html export
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function(callback)
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{
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//if this is a html export, we can send this from here directly
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if(type == "html")
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{
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res.send(html);
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callback("stop");
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}
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//write the html export to a file
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else
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{
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randNum = Math.floor(Math.random()*new Date().getTime());
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srcFile = tempDirectory + "/eplite_export_" + randNum + ".html";
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fs.writeFile(srcFile, html, callback);
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}
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},
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//send the convert job to abiword
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function(callback)
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{
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//ensure html can be collected by the garbage collector
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html = null;
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destFile = tempDirectory + "/eplite_export_" + randNum + "." + type;
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abiword.convertFile(srcFile, destFile, type, callback);
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},
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//send the file
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function(callback)
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{
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res.sendfile(destFile, null, callback);
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},
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//clean up temporary files
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function(callback)
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{
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async.parallel([
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function(callback)
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{
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fs.unlink(srcFile, callback);
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},
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function(callback)
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{
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//100ms delay to accomidate for slow windows fs
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setTimeout(function()
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{
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fs.unlink(destFile, callback);
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}, 100);
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}
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], callback);
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}
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], function(err)
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{
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if(err && err != "stop") throw err;
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})
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}
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};
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