Projection: make invalid by default, add IsValid()
[xcsoar.git] / src / IO / TextFile.cpp
blobdacb76c9e9bfeec41501f6d0233bd95f790fc447
1 /*
2 Copyright_License {
4 XCSoar Glide Computer - http://www.xcsoar.org/
5 Copyright (C) 2000-2013 The XCSoar Project
6 A detailed list of copyright holders can be found in the file "AUTHORS".
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License
10 as published by the Free Software Foundation; either version 2
11 of the License, or (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 #include "TextFile.hpp"
25 #include "FileLineReader.hpp"
26 #include "ZipLineReader.hpp"
28 #include <assert.h>
30 TLineReader *
31 OpenTextFile(const TCHAR *path, ConvertLineReader::charset cs)
33 assert(path != NULL);
35 FileLineReader *reader = new FileLineReader(path, cs);
36 if (reader == NULL)
37 return NULL;
39 if (!reader->error())
40 return reader;
42 delete reader;
44 ZipLineReader *zip_reader = new ZipLineReader(path, cs);
45 if (zip_reader == NULL)
46 return NULL;
48 if (!zip_reader->error())
49 return zip_reader;
51 delete zip_reader;
53 return NULL;