Mercurial > hg > orthanc
annotate Core/FileStorage/CompressedFileStorageAccessor.cpp @ 1124:790ff7a5b3bf
IStorageArea abstraction
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Fri, 05 Sep 2014 16:28:34 +0200 |
| parents | 6c5a77637b23 |
| children | bf67431a7383 |
| rev | line source |
|---|---|
| 221 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 689 | 3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege, |
| 221 | 4 * Belgium |
| 5 * | |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 22 * | |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
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33 #include "../PrecompiledHeaders.h" |
| 221 | 34 #include "CompressedFileStorageAccessor.h" |
| 35 | |
| 36 #include "../OrthancException.h" | |
| 37 #include "FileStorageAccessor.h" | |
| 38 #include "../HttpServer/BufferHttpSender.h" | |
| 39 | |
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40 #include <memory> |
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41 |
| 221 | 42 namespace Orthanc |
| 43 { | |
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44 FileInfo CompressedFileStorageAccessor::WriteInternal(const void* data, |
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45 size_t size, |
| 233 | 46 FileContentType type) |
| 221 | 47 { |
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48 std::string md5; |
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49 |
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50 if (storeMD5_) |
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51 { |
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52 Toolbox::ComputeMD5(md5, data, size); |
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53 } |
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54 |
| 221 | 55 switch (compressionType_) |
| 56 { | |
| 57 case CompressionType_None: | |
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58 { |
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59 std::string uuid = storage_.Create(data, size); |
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60 return FileInfo(uuid, type, size, md5); |
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61 } |
| 221 | 62 |
| 63 case CompressionType_Zlib: | |
| 64 { | |
| 65 std::string compressed; | |
| 66 zlib_.Compress(compressed, data, size); | |
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67 |
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68 std::string compressedMD5; |
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69 |
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70 if (storeMD5_) |
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71 { |
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72 Toolbox::ComputeMD5(compressedMD5, compressed); |
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73 } |
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74 |
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75 std::string uuid; |
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76 if (compressed.size() > 0) |
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77 { |
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78 uuid = storage_.Create(&compressed[0], compressed.size()); |
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79 } |
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80 else |
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81 { |
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82 uuid = storage_.Create(NULL, 0); |
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83 } |
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84 |
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85 return FileInfo(uuid, type, size, md5, |
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86 CompressionType_Zlib, compressed.size(), compressedMD5); |
| 221 | 87 } |
| 88 | |
| 89 default: | |
| 90 throw OrthancException(ErrorCode_NotImplemented); | |
| 91 } | |
| 92 } | |
| 93 | |
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94 CompressedFileStorageAccessor::CompressedFileStorageAccessor(IStorageArea& storage) : |
| 221 | 95 storage_(storage) |
| 96 { | |
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97 compressionType_ = CompressionType_None; |
| 221 | 98 } |
| 99 | |
| 100 void CompressedFileStorageAccessor::Read(std::string& content, | |
| 101 const std::string& uuid) | |
| 102 { | |
| 103 switch (compressionType_) | |
| 104 { | |
| 105 case CompressionType_None: | |
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106 storage_.Read(content, uuid); |
| 221 | 107 break; |
| 108 | |
| 109 case CompressionType_Zlib: | |
| 110 { | |
| 111 std::string compressed; | |
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112 storage_.Read(compressed, uuid); |
| 221 | 113 zlib_.Uncompress(content, compressed); |
| 114 break; | |
| 115 } | |
| 116 | |
| 117 default: | |
| 118 throw OrthancException(ErrorCode_NotImplemented); | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 HttpFileSender* CompressedFileStorageAccessor::ConstructHttpFileSender(const std::string& uuid) | |
| 123 { | |
| 124 switch (compressionType_) | |
| 125 { | |
| 126 case CompressionType_None: | |
| 127 { | |
| 128 FileStorageAccessor uncompressedAccessor(storage_); | |
| 129 return uncompressedAccessor.ConstructHttpFileSender(uuid); | |
| 130 } | |
| 131 | |
| 132 case CompressionType_Zlib: | |
| 133 { | |
| 134 std::string compressed; | |
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135 storage_.Read(compressed, uuid); |
| 221 | 136 |
| 137 std::auto_ptr<BufferHttpSender> sender(new BufferHttpSender); | |
| 138 zlib_.Uncompress(sender->GetBuffer(), compressed); | |
| 139 | |
| 140 return sender.release(); | |
| 141 } | |
| 142 | |
| 143 default: | |
| 144 throw OrthancException(ErrorCode_NotImplemented); | |
| 145 } | |
| 146 } | |
| 147 } |