Mercurial > hg > orthanc
annotate OrthancFramework/Sources/HttpServer/FilesystemHttpSender.cpp @ 4239:c8754c4c1862
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 09 Oct 2020 11:38:03 +0200 |
parents | bf7b9edf6b81 |
children | db3932f9660d |
rev | line source |
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208 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
1900 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
208 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
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8 * modify it under the terms of the GNU Lesser General Public License |
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9 * as published by the Free Software Foundation, either version 3 of |
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10 * the License, or (at your option) any later version. |
208 | 11 * |
12 * This program is distributed in the hope that it will be useful, but | |
13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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15 * Lesser General Public License for more details. |
208 | 16 * |
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17 * You should have received a copy of the GNU Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
208 | 20 **/ |
21 | |
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22 #include "../PrecompiledHeaders.h" |
208 | 23 #include "FilesystemHttpSender.h" |
24 | |
1522 | 25 #include "../OrthancException.h" |
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26 |
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27 static const size_t CHUNK_SIZE = 64 * 1024; // Use 64KB chunks |
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28 |
208 | 29 namespace Orthanc |
30 { | |
1522 | 31 void FilesystemHttpSender::Initialize(const boost::filesystem::path& path) |
208 | 32 { |
1522 | 33 SetContentFilename(path.filename().string()); |
34 file_.open(path.string().c_str(), std::ifstream::binary); | |
35 | |
36 if (!file_.is_open()) | |
37 { | |
38 throw OrthancException(ErrorCode_InexistentFile); | |
39 } | |
208 | 40 |
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41 file_.seekg(0, file_.end); |
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42 size_ = file_.tellg(); |
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43 file_.seekg(0, file_.beg); |
217 | 44 } |
45 | |
1522 | 46 |
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47 bool FilesystemHttpSender::ReadNextChunk() |
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48 { |
1525 | 49 if (chunk_.size() == 0) |
1522 | 50 { |
1525 | 51 chunk_.resize(CHUNK_SIZE); |
1522 | 52 } |
53 | |
1525 | 54 file_.read(&chunk_[0], chunk_.size()); |
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55 |
1525 | 56 if ((file_.flags() & std::istream::failbit) || |
57 file_.gcount() < 0) | |
1522 | 58 { |
1525 | 59 throw OrthancException(ErrorCode_CorruptedFile); |
1522 | 60 } |
61 | |
2332 | 62 chunkSize_ = static_cast<size_t>(file_.gcount()); |
1525 | 63 |
64 return chunkSize_ > 0; | |
208 | 65 } |
66 } |