Mercurial > hg > orthanc
annotate OrthancFramework/Sources/Compression/ZipWriter.h @ 5853:4d932683049d get-scu tip
very first implementation of C-Get SCU
author | Alain Mazy <am@orthanc.team> |
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date | Tue, 29 Oct 2024 17:25:49 +0100 |
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rev | line source |
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136 | 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) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium |
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
136 | 8 * |
9 * This program is free software: you can redistribute it and/or | |
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10 * modify it under the terms of the GNU Lesser General Public License |
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11 * as published by the Free Software Foundation, either version 3 of |
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12 * the License, or (at your option) any later version. |
136 | 13 * |
14 * This program is distributed in the hope that it will be useful, but | |
15 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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17 * Lesser General Public License for more details. |
136 | 18 * |
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19 * You should have received a copy of the GNU Lesser General Public |
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20 * License along with this program. If not, see |
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21 * <http://www.gnu.org/licenses/>. |
136 | 22 **/ |
23 | |
24 | |
81 | 25 #pragma once |
26 | |
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27 #include "../OrthancFramework.h" |
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28 |
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29 #if !defined(ORTHANC_ENABLE_ZLIB) |
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30 # error The macro ORTHANC_ENABLE_ZLIB must be defined |
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31 #endif |
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32 |
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33 #if ORTHANC_ENABLE_ZLIB != 1 |
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34 # error ZLIB support must be enabled to include this file |
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35 #endif |
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36 |
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37 #if ORTHANC_BUILD_UNIT_TESTS == 1 |
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38 # include <gtest/gtest_prod.h> |
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39 #endif |
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40 |
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41 #include "../ChunkedBuffer.h" |
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42 #include "../Compatibility.h" |
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43 |
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44 |
81 | 45 #include <stdint.h> |
93 | 46 #include <string> |
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47 #include <boost/noncopyable.hpp> |
81 | 48 #include <boost/shared_ptr.hpp> |
265 | 49 |
81 | 50 namespace Orthanc |
51 { | |
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52 class ORTHANC_PUBLIC ZipWriter : public boost::noncopyable |
81 | 53 { |
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54 #if ORTHANC_BUILD_UNIT_TESTS == 1 |
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55 FRIEND_TEST(ZipWriter, BufferWithSeek); |
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56 #endif |
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57 |
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58 public: |
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59 // New in Orthanc 1.9.4 |
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60 class ORTHANC_PUBLIC IOutputStream : public boost::noncopyable |
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61 { |
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62 public: |
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63 virtual ~IOutputStream() |
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64 { |
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65 } |
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66 |
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67 virtual void Write(const std::string& chunk) = 0; |
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68 |
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69 virtual void Close() = 0; |
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70 |
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ZipWriter::CancelStream(), ZipWriter::GetArchiveSize() and HttpOutput::AnswerWithoutBuffering()
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71 virtual uint64_t GetArchiveSize() const = 0; |
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72 }; |
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73 |
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74 |
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75 // The lifetime of the "target" buffer must be larger than that of ZipWriter |
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76 class ORTHANC_PUBLIC MemoryStream : public IOutputStream |
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77 { |
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78 private: |
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79 std::string& target_; |
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80 ChunkedBuffer chunked_; |
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81 uint64_t archiveSize_; |
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82 |
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83 public: |
4690 | 84 explicit MemoryStream(std::string& target); |
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85 |
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86 virtual void Write(const std::string& chunk) ORTHANC_OVERRIDE; |
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87 |
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88 virtual void Close() ORTHANC_OVERRIDE; |
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89 |
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90 virtual uint64_t GetArchiveSize() const ORTHANC_OVERRIDE; |
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91 }; |
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92 |
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93 |
81 | 94 private: |
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95 // This class is only public for unit tests |
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96 class ORTHANC_PUBLIC BufferWithSeek : public boost::noncopyable |
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97 { |
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98 private: |
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99 size_t currentPosition_; |
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100 ChunkedBuffer chunks_; |
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101 std::string flattened_; |
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102 |
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103 void CheckInvariants() const; |
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104 |
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105 public: |
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106 BufferWithSeek(); |
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107 |
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108 ~BufferWithSeek(); |
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109 |
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110 size_t GetPosition() const; |
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111 |
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112 size_t GetSize() const; |
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113 |
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114 void Write(const void* data, |
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115 size_t size); |
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116 |
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117 void Write(const std::string& data); |
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118 |
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119 void Seek(size_t position); |
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120 |
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121 void Flush(std::string& target); |
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122 }; |
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123 |
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124 |
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125 private: |
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126 class StreamBuffer; |
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127 |
81 | 128 struct PImpl; |
129 boost::shared_ptr<PImpl> pimpl_; | |
130 | |
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131 bool isZip64_; |
81 | 132 bool hasFileInZip_; |
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133 bool append_; |
81 | 134 uint8_t compressionLevel_; |
135 std::string path_; | |
136 | |
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137 std::unique_ptr<IOutputStream> outputStream_; |
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138 |
81 | 139 public: |
140 ZipWriter(); | |
141 | |
142 ~ZipWriter(); | |
143 | |
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144 void SetZip64(bool isZip64); |
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145 |
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146 bool IsZip64() const; |
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147 |
81 | 148 void SetCompressionLevel(uint8_t level); |
149 | |
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150 uint8_t GetCompressionLevel() const; |
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151 |
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152 void SetAppendToExisting(bool append); |
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153 |
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154 bool IsAppendToExisting() const; |
81 | 155 |
156 void Open(); | |
157 | |
158 void Close(); | |
159 | |
160 bool IsOpen() const; | |
161 | |
162 void SetOutputPath(const char* path); | |
163 | |
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164 const std::string& GetOutputPath() const; |
81 | 165 |
249 | 166 void OpenFile(const char* path); |
81 | 167 |
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168 void Write(const void* data, size_t length); |
81 | 169 |
170 void Write(const std::string& data); | |
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171 |
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172 void AcquireOutputStream(IOutputStream* stream, // transfers ownership |
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173 bool isZip64); |
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174 |
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175 // The lifetime of the "target" buffer must be larger than that of ZipWriter |
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176 void SetMemoryOutput(std::string& target, |
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177 bool isZip64); |
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178 |
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179 void CancelStream(); |
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180 |
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181 // WARNING: "GetArchiveSize()" only has its final value after |
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182 // "Close()" has been called |
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183 uint64_t GetArchiveSize() const; |
81 | 184 }; |
185 } |