Mercurial > hg > orthanc
annotate OrthancFramework/Sources/FileBuffer.cpp @ 4150:b56f3a37a4a1
optimization of ChunkedBuffer if many small chunks are added
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 19 Aug 2020 11:18:55 +0200 |
| parents | bf7b9edf6b81 |
| children | d9473bd5ed43 |
| 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 | |
|
3640
94f4a18a79cc
upgrade to year 2020
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
3357
diff
changeset
|
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 3357 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
|
4119
bf7b9edf6b81
re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
4044
diff
changeset
|
8 * modify it under the terms of the GNU Lesser General Public License |
|
bf7b9edf6b81
re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
4044
diff
changeset
|
9 * as published by the Free Software Foundation, either version 3 of |
|
bf7b9edf6b81
re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
4044
diff
changeset
|
10 * the License, or (at your option) any later version. |
| 3357 | 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 | |
|
4119
bf7b9edf6b81
re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
4044
diff
changeset
|
15 * Lesser General Public License for more details. |
| 3357 | 16 * |
|
4119
bf7b9edf6b81
re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
4044
diff
changeset
|
17 * You should have received a copy of the GNU Lesser General Public |
|
bf7b9edf6b81
re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
4044
diff
changeset
|
18 * License along with this program. If not, see |
|
bf7b9edf6b81
re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
4044
diff
changeset
|
19 * <http://www.gnu.org/licenses/>. |
| 3357 | 20 **/ |
| 21 | |
| 22 | |
| 23 #include "PrecompiledHeaders.h" | |
| 24 #include "FileBuffer.h" | |
| 25 | |
| 26 #include "TemporaryFile.h" | |
| 27 #include "OrthancException.h" | |
| 28 | |
| 29 #include <boost/filesystem/fstream.hpp> | |
| 30 | |
| 31 | |
| 32 namespace Orthanc | |
| 33 { | |
| 34 class FileBuffer::PImpl | |
| 35 { | |
| 36 private: | |
| 37 TemporaryFile file_; | |
| 38 boost::filesystem::ofstream stream_; | |
| 39 bool isWriting_; | |
| 40 | |
| 41 public: | |
| 42 PImpl() : | |
| 43 isWriting_(true) | |
| 44 { | |
| 45 stream_.open(file_.GetPath(), std::ofstream::out | std::ofstream::binary); | |
| 46 if (!stream_.good()) | |
| 47 { | |
| 48 throw OrthancException(ErrorCode_CannotWriteFile); | |
| 49 } | |
| 50 } | |
| 51 | |
| 52 ~PImpl() | |
| 53 { | |
| 54 if (isWriting_) | |
| 55 { | |
| 56 stream_.close(); | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 void Append(const char* buffer, | |
| 61 size_t size) | |
| 62 { | |
| 63 if (!isWriting_) | |
| 64 { | |
| 65 throw OrthancException(ErrorCode_BadSequenceOfCalls); | |
| 66 } | |
| 67 | |
| 68 if (size > 0) | |
| 69 { | |
| 70 stream_.write(buffer, size); | |
| 71 if (!stream_.good()) | |
| 72 { | |
| 73 stream_.close(); | |
| 74 throw OrthancException(ErrorCode_FileStorageCannotWrite); | |
| 75 } | |
| 76 } | |
| 77 } | |
| 78 | |
| 79 void Read(std::string& target) | |
| 80 { | |
| 81 if (isWriting_) | |
| 82 { | |
| 83 stream_.close(); | |
| 84 isWriting_ = false; | |
| 85 } | |
| 86 | |
| 87 file_.Read(target); | |
| 88 } | |
| 89 }; | |
| 90 | |
| 91 | |
| 92 FileBuffer::FileBuffer() : | |
| 93 pimpl_(new PImpl) | |
| 94 { | |
| 95 } | |
| 96 | |
| 97 | |
| 98 void FileBuffer::Append(const char* buffer, | |
| 99 size_t size) | |
| 100 { | |
| 101 assert(pimpl_.get() != NULL); | |
| 102 pimpl_->Append(buffer, size); | |
| 103 } | |
| 104 | |
| 105 | |
| 106 void FileBuffer::Read(std::string& target) | |
| 107 { | |
| 108 assert(pimpl_.get() != NULL); | |
| 109 pimpl_->Read(target); | |
| 110 } | |
| 111 } |