Mercurial > hg > orthanc
annotate Core/FileBuffer.cpp @ 3926:2910b0d30fe0 transcoding
Allow concurrent calls to the custom image decoders provided by the plugins
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 14 May 2020 07:37:44 +0200 |
| parents | 94f4a18a79cc |
| children |
| rev | line source |
|---|---|
| 3357 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
|
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Sebastien Jodogne <s.jodogne@gmail.com>
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 3357 | 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 | |
| 34 #include "PrecompiledHeaders.h" | |
| 35 #include "FileBuffer.h" | |
| 36 | |
| 37 #include "TemporaryFile.h" | |
| 38 #include "OrthancException.h" | |
| 39 | |
| 40 #include <boost/filesystem/fstream.hpp> | |
| 41 | |
| 42 | |
| 43 namespace Orthanc | |
| 44 { | |
| 45 class FileBuffer::PImpl | |
| 46 { | |
| 47 private: | |
| 48 TemporaryFile file_; | |
| 49 boost::filesystem::ofstream stream_; | |
| 50 bool isWriting_; | |
| 51 | |
| 52 public: | |
| 53 PImpl() : | |
| 54 isWriting_(true) | |
| 55 { | |
| 56 stream_.open(file_.GetPath(), std::ofstream::out | std::ofstream::binary); | |
| 57 if (!stream_.good()) | |
| 58 { | |
| 59 throw OrthancException(ErrorCode_CannotWriteFile); | |
| 60 } | |
| 61 } | |
| 62 | |
| 63 ~PImpl() | |
| 64 { | |
| 65 if (isWriting_) | |
| 66 { | |
| 67 stream_.close(); | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 void Append(const char* buffer, | |
| 72 size_t size) | |
| 73 { | |
| 74 if (!isWriting_) | |
| 75 { | |
| 76 throw OrthancException(ErrorCode_BadSequenceOfCalls); | |
| 77 } | |
| 78 | |
| 79 if (size > 0) | |
| 80 { | |
| 81 stream_.write(buffer, size); | |
| 82 if (!stream_.good()) | |
| 83 { | |
| 84 stream_.close(); | |
| 85 throw OrthancException(ErrorCode_FileStorageCannotWrite); | |
| 86 } | |
| 87 } | |
| 88 } | |
| 89 | |
| 90 void Read(std::string& target) | |
| 91 { | |
| 92 if (isWriting_) | |
| 93 { | |
| 94 stream_.close(); | |
| 95 isWriting_ = false; | |
| 96 } | |
| 97 | |
| 98 file_.Read(target); | |
| 99 } | |
| 100 }; | |
| 101 | |
| 102 | |
| 103 FileBuffer::FileBuffer() : | |
| 104 pimpl_(new PImpl) | |
| 105 { | |
| 106 } | |
| 107 | |
| 108 | |
| 109 void FileBuffer::Append(const char* buffer, | |
| 110 size_t size) | |
| 111 { | |
| 112 assert(pimpl_.get() != NULL); | |
| 113 pimpl_->Append(buffer, size); | |
| 114 } | |
| 115 | |
| 116 | |
| 117 void FileBuffer::Read(std::string& target) | |
| 118 { | |
| 119 assert(pimpl_.get() != NULL); | |
| 120 pimpl_->Read(target); | |
| 121 } | |
| 122 } |