166 lines
4.0 KiB
JavaScript
166 lines
4.0 KiB
JavaScript
/**
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* Handles the import 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 padManager = require("../db/PadManager");
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var padMessageHandler = require("./PadMessageHandler");
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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 formidable = require('formidable');
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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 import
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*/
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exports.doImport = function(req, res, padId)
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{
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//pipe to a file
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//convert file to text via abiword
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//set text in the pad
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var srcFile, destFile;
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var pad;
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var text;
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async.series([
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//save the uploaded file to /tmp
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function(callback)
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{
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var form = new formidable.IncomingForm();
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form.keepExtensions = true;
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form.uploadDir = tempDirectory;
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form.parse(req, function(err, fields, files)
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{
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//save the path of the uploaded file
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srcFile = files.file.path;
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callback(err);
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});
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},
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//ensure this is a file ending we know, else we change the file ending to .txt
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//this allows us to accept source code files like .c or .java
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function(callback)
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{
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var fileEnding = srcFile.split(".")[1];
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var knownFileEndings = ["txt", "doc", "docx", "pdf", "odt", "html", "htm"];
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//find out if this is a known file ending
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var fileEndingKnown = false;
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for(var i in knownFileEndings)
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{
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if(fileEnding == knownFileEndings[i])
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{
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fileEndingKnown = true;
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}
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}
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//if the file ending is known, continue as normal
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if(fileEndingKnown)
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{
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callback();
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}
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//we need to rename this file with a .txt ending
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else
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{
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var oldSrcFile = srcFile;
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srcFile = srcFile.split(".")[0] + ".txt";
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fs.rename(oldSrcFile, srcFile, callback);
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}
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},
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//convert file to text
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function(callback)
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{
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var randNum = Math.floor(Math.random()*new Date().getTime());
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destFile = tempDirectory + "eplite_import_" + randNum + ".txt";
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abiword.convertFile(srcFile, destFile, "txt", callback);
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},
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//get the pad object
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function(callback)
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{
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padManager.getPad(padId, function(err, _pad)
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{
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pad = _pad;
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callback(err);
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});
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},
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//read the text
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function(callback)
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{
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fs.readFile(destFile, "utf8", function(err, _text)
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{
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text = _text;
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//node on windows has a delay on releasing of the file lock.
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//We add a 100ms delay to work around this
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setTimeout(function()
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{
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callback(err);
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}, 100);
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});
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},
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//change text of the pad and broadcast the changeset
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function(callback)
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{
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pad.setText(text);
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padMessageHandler.updatePadClients(pad, 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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fs.unlink(destFile, callback);
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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) throw err;
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//close the connection
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res.send("ok");
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});
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}
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