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comparison Core/FileStorage/CompressedFileStorageAccessor.cpp @ 221:e7432706b354

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accessors to storage
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 29 Nov 2012 18:01:06 +0100
parents
children 5368bbe813cf
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220:bb8c260c0092 221:e7432706b354
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege,
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
33 #include "CompressedFileStorageAccessor.h"
34
35 #include "../OrthancException.h"
36 #include "FileStorageAccessor.h"
37 #include "../HttpServer/BufferHttpSender.h"
38
39 namespace Orthanc
40 {
41 std::string CompressedFileStorageAccessor::WriteInternal(const void* data,
42 size_t size)
43 {
44 switch (compressionType_)
45 {
46 case CompressionType_None:
47 return storage_.Create(data, size);
48
49 case CompressionType_Zlib:
50 {
51 std::string compressed;
52 zlib_.Compress(compressed, data, size);
53 return storage_.Create(compressed);
54 }
55
56 default:
57 throw OrthancException(ErrorCode_NotImplemented);
58 }
59 }
60
61 CompressedFileStorageAccessor::CompressedFileStorageAccessor(FileStorage& storage) :
62 storage_(storage)
63 {
64 compressionType_ = CompressionType_Zlib;
65 }
66
67 void CompressedFileStorageAccessor::Read(std::string& content,
68 const std::string& uuid)
69 {
70 switch (compressionType_)
71 {
72 case CompressionType_None:
73 storage_.ReadFile(content, uuid);
74 break;
75
76 case CompressionType_Zlib:
77 {
78 std::string compressed;
79 storage_.ReadFile(compressed, uuid);
80 zlib_.Uncompress(content, compressed);
81 break;
82 }
83
84 default:
85 throw OrthancException(ErrorCode_NotImplemented);
86 }
87 }
88
89 HttpFileSender* CompressedFileStorageAccessor::ConstructHttpFileSender(const std::string& uuid)
90 {
91 switch (compressionType_)
92 {
93 case CompressionType_None:
94 {
95 FileStorageAccessor uncompressedAccessor(storage_);
96 return uncompressedAccessor.ConstructHttpFileSender(uuid);
97 }
98
99 case CompressionType_Zlib:
100 {
101 std::string compressed;
102 storage_.ReadFile(compressed, uuid);
103
104 std::auto_ptr<BufferHttpSender> sender(new BufferHttpSender);
105 zlib_.Uncompress(sender->GetBuffer(), compressed);
106
107 return sender.release();
108 }
109
110 default:
111 throw OrthancException(ErrorCode_NotImplemented);
112 }
113 }
114 }