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comparison OrthancFramework/Sources/HttpServer/FilesystemHttpSender.cpp @ 4044:d25f4c0fa160 framework

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splitting code into OrthancFramework and OrthancServer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 10 Jun 2020 20:30:34 +0200
parents Core/HttpServer/FilesystemHttpSender.cpp@94f4a18a79cc
children bf7b9edf6b81
comparison
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4043:6c6239aec462 4044:d25f4c0fa160
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
11 *
12 * In addition, as a special exception, the copyright holders of this
13 * program give permission to link the code of its release with the
14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
15 * that use the same license as the "OpenSSL" library), and distribute
16 * the linked executables. You must obey the GNU General Public License
17 * in all respects for all of the code used other than "OpenSSL". If you
18 * modify file(s) with this exception, you may extend this exception to
19 * your version of the file(s), but you are not obligated to do so. If
20 * you do not wish to do so, delete this exception statement from your
21 * version. If you delete this exception statement from all source files
22 * in the program, then also delete it here.
23 *
24 * This program is distributed in the hope that it will be useful, but
25 * WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 * General Public License for more details.
28 *
29 * You should have received a copy of the GNU General Public License
30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
31 **/
32
33 #include "../PrecompiledHeaders.h"
34 #include "FilesystemHttpSender.h"
35
36 #include "../OrthancException.h"
37
38 static const size_t CHUNK_SIZE = 64 * 1024; // Use 64KB chunks
39
40 namespace Orthanc
41 {
42 void FilesystemHttpSender::Initialize(const boost::filesystem::path& path)
43 {
44 SetContentFilename(path.filename().string());
45 file_.open(path.string().c_str(), std::ifstream::binary);
46
47 if (!file_.is_open())
48 {
49 throw OrthancException(ErrorCode_InexistentFile);
50 }
51
52 file_.seekg(0, file_.end);
53 size_ = file_.tellg();
54 file_.seekg(0, file_.beg);
55 }
56
57
58 bool FilesystemHttpSender::ReadNextChunk()
59 {
60 if (chunk_.size() == 0)
61 {
62 chunk_.resize(CHUNK_SIZE);
63 }
64
65 file_.read(&chunk_[0], chunk_.size());
66
67 if ((file_.flags() & std::istream::failbit) ||
68 file_.gcount() < 0)
69 {
70 throw OrthancException(ErrorCode_CorruptedFile);
71 }
72
73 chunkSize_ = static_cast<size_t>(file_.gcount());
74
75 return chunkSize_ > 0;
76 }
77 }