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annotate OrthancFramework/Sources/TemporaryFile.cpp @ 5657:dedbf019a707

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Improved parsing of multiple numerical values in DICOM tags
author Alain Mazy <am@orthanc.team>
date Thu, 06 Jun 2024 17:55:13 +0200
parents f7adfb22e20e
children
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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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
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8 *
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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.
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13 *
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14 * This program is distributed in the hope that it will be useful, but
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15 * WITHOUT ANY WARRANTY; without even the implied warranty of
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 * Lesser General Public License for more details.
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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/>.
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22 **/
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24
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25 #include "PrecompiledHeaders.h"
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26 #include "TemporaryFile.h"
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28 #include "OrthancException.h"
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29 #include "SystemToolbox.h"
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30 #include "Toolbox.h"
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31
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32 #include <boost/filesystem.hpp>
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33 #include <boost/lexical_cast.hpp>
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34
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35 namespace Orthanc
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36 {
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37 static std::string CreateTemporaryPath(const char* temporaryDirectory,
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38 const char* extension)
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39 {
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40 boost::filesystem::path dir;
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42 if (temporaryDirectory == NULL)
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43 {
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44 #if BOOST_HAS_FILESYSTEM_V3 == 1
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45 dir = boost::filesystem::temp_directory_path();
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46 #elif defined(__linux__)
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47 dir = "/tmp";
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48 #else
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49 # error Support your platform here
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50 #endif
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51 }
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52 else
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53 {
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54 dir = temporaryDirectory;
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55 }
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57 // We use UUID to create unique path to temporary files
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58 const std::string uuid = Toolbox::GenerateUuid();
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60 // New in Orthanc 1.5.8: Prefix the process ID to the name of the
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61 // temporary files, in order to locate orphan temporary files that
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62 // were left by instances of Orthanc that exited in non-clean way
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63 // https://groups.google.com/d/msg/orthanc-users/MSJX53bw6Lw/d3S3lRRLAwAJ
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64 std::string filename = "Orthanc-" + boost::lexical_cast<std::string>(SystemToolbox::GetProcessId()) + "-" + uuid;
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65
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66 if (extension != NULL)
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67 {
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68 filename.append(extension);
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69 }
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71 dir /= filename;
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72 return dir.string();
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73 }
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76 TemporaryFile::TemporaryFile() :
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77 path_(CreateTemporaryPath(NULL, NULL))
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78 {
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79 }
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81
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82 TemporaryFile::TemporaryFile(const std::string& temporaryDirectory,
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83 const std::string& extension) :
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84 path_(CreateTemporaryPath(temporaryDirectory.c_str(), extension.c_str()))
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85 {
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86 }
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88
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89 TemporaryFile::~TemporaryFile()
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90 {
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91 boost::filesystem::remove(path_);
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92 }
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93
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94 const std::string &TemporaryFile::GetPath() const
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95 {
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96 return path_;
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97 }
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98
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100 void TemporaryFile::Write(const std::string& content)
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101 {
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102 try
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103 {
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104 SystemToolbox::WriteFile(content, path_);
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105 }
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106 catch (OrthancException& e)
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107 {
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108 throw OrthancException(e.GetErrorCode(),
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109 "Can't create temporary file \"" + path_ +
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110 "\" with " + boost::lexical_cast<std::string>(content.size()) +
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111 " bytes: Check you have write access to the "
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112 "temporary directory and that it is not full");
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113 }
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114 }
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115
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116
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117 void TemporaryFile::Read(std::string& content) const
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118 {
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119 try
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120 {
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121 SystemToolbox::ReadFile(content, path_);
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122 }
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123 catch (OrthancException& e)
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124 {
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125 throw OrthancException(e.GetErrorCode(),
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126 "Can't read temporary file \"" + path_ +
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127 "\": Another process has corrupted the temporary directory");
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128 }
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129 }
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130
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131
6fd38327e777 Fix issue #130 (Orthanc failed to start when /tmp partition was full)
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132 void TemporaryFile::Touch()
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133 {
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134 std::string empty;
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135 Write(empty);
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136 }
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137
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138
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139 uint64_t TemporaryFile::GetFileSize() const
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140 {
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141 return SystemToolbox::GetFileSize(path_);
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142 }
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143
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144
52166629239f SystemToolbox::ReadFileRange()
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145 void TemporaryFile::ReadRange(std::string& content,
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146 uint64_t start,
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147 uint64_t end,
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148 bool throwIfOverflow) const
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149 {
52166629239f SystemToolbox::ReadFileRange()
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150 SystemToolbox::ReadFileRange(content, path_, start, end, throwIfOverflow);
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151 }
0
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152 }