1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/**
* Handles the import requests
*/
/*
* 2011 Peter 'Pita' Martischka (Primary Technology Ltd)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS-IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var padManager = require("../db/PadManager");
var padMessageHandler = require("./PadMessageHandler");
var async = require("async");
var fs = require("fs");
var settings = require('../utils/Settings');
var formidable = require('formidable');
var os = require("os");
//load abiword only if its enabled
if(settings.abiword != null)
var abiword = require("../utils/Abiword");
var tempDirectory = "/tmp/";
//tempDirectory changes if the operating system is windows
if(os.type().indexOf("Windows") > -1)
{
tempDirectory = process.env.TEMP;
}
/**
* do a requested import
*/
exports.doImport = function(req, res, padId)
{
//pipe to a file
//convert file to text via abiword
//set text in the pad
var srcFile, destFile;
var pad;
var text;
async.series([
//save the uploaded file to /tmp
function(callback)
{
var form = new formidable.IncomingForm();
form.keepExtensions = true;
form.uploadDir = tempDirectory;
form.parse(req, function(err, fields, files)
{
//the upload failed, stop at this point
if(err || files.file === undefined)
{
console.warn("Uploading Error: " + err.stack);
callback("uploadFailed");
}
//everything ok, continue
else
{
//save the path of the uploaded file
srcFile = files.file.path;
callback();
}
});
},
//ensure this is a file ending we know, else we change the file ending to .txt
//this allows us to accept source code files like .c or .java
function(callback)
{
var fileEnding = srcFile.split(".")[1].toLowerCase();
var knownFileEndings = ["txt", "doc", "docx", "pdf", "odt", "html", "htm"];
//find out if this is a known file ending
var fileEndingKnown = false;
for(var i in knownFileEndings)
{
if(fileEnding == knownFileEndings[i])
{
fileEndingKnown = true;
}
}
//if the file ending is known, continue as normal
if(fileEndingKnown)
{
callback();
}
//we need to rename this file with a .txt ending
else
{
var oldSrcFile = srcFile;
srcFile = srcFile.split(".")[0] + ".txt";
fs.rename(oldSrcFile, srcFile, callback);
}
},
//convert file to text
function(callback)
{
var randNum = Math.floor(Math.random()*new Date().getTime());
destFile = tempDirectory + "eplite_import_" + randNum + ".txt";
abiword.convertFile(srcFile, destFile, "txt", callback);
},
//get the pad object
function(callback)
{
padManager.getPad(padId, function(err, _pad)
{
pad = _pad;
callback(err);
});
},
//read the text
function(callback)
{
fs.readFile(destFile, "utf8", function(err, _text)
{
text = _text;
//node on windows has a delay on releasing of the file lock.
//We add a 100ms delay to work around this
setTimeout(function()
{
callback(err);
}, 100);
});
},
//change text of the pad and broadcast the changeset
function(callback)
{
pad.setText(text);
padMessageHandler.updatePadClients(pad, callback);
},
//clean up temporary files
function(callback)
{
async.parallel([
function(callback)
{
fs.unlink(srcFile, callback);
},
function(callback)
{
fs.unlink(destFile, callback);
}
], callback);
}
], function(err)
{
//the upload failed, there is nothing we can do, send a 500
if(err == "uploadFailed")
{
res.send(500);
return;
}
if(err) throw err;
//close the connection
res.send("ok");
});
}
|
