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annotate Core/Compression/HierarchicalZipWriter.cpp @ 247:c9b3ba0fd140

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path management in zip files
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 04 Dec 2012 17:27:23 +0100
parents
children 2442033911d6
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247
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege,
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4 * Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "HierarchicalZipWriter.h"
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34
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35 #include "../Toolbox.h"
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36 #include "../OrthancException.h"
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37
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38 #include <boost/lexical_cast.hpp>
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39
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40 namespace Orthanc
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41 {
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42 std::string HierarchicalZipWriter::Index::KeepAlphanumeric(const std::string& source)
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43 {
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44 std::string result;
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45
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46 bool lastSpace = false;
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47
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48 result.reserve(source.size());
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49 for (size_t i = 0; i < source.size(); i++)
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50 {
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51 if (source[i] < 128 &&
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52 source[i] >= 0)
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53 {
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54 if (isspace(source[i]))
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55 {
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56 if (!lastSpace)
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57 {
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58 lastSpace = true;
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59 result.push_back(' ');
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60 }
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61 }
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62 else if (isalnum(source[i]))
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63 {
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64 result.push_back(source[i]);
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65 lastSpace = false;
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66 }
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67 }
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68 }
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69
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70 return Toolbox::StripSpaces(result);
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71 }
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72
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73 std::string HierarchicalZipWriter::Index::GetCurrentDirectoryPath() const
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74 {
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75 std::string result;
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76
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77 Stack::const_iterator it = stack_.begin();
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78 it++; // Skip the root node (to avoid absolute paths)
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79
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80 while (it != stack_.end())
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81 {
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82 result += (*it)->name_ + "/";
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83 it++;
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84 }
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85
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86 return result;
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87 }
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88
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89 std::string HierarchicalZipWriter::Index::EnsureUniqueFilename(const char* filename)
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90 {
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91 std::string standardized = KeepAlphanumeric(filename);
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92
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93 Directory& d = *stack_.back();
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94 Directory::Content::iterator it = d.content_.find(standardized);
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95
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96 if (it == d.content_.end())
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97 {
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98 d.content_[standardized] = 1;
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99 return standardized;
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100 }
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101 else
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102 {
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103 it->second++;
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104 return standardized + "-" + boost::lexical_cast<std::string>(it->second);
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105 }
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106 }
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107
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108 HierarchicalZipWriter::Index::Index()
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109 {
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110 stack_.push_back(new Directory);
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111 }
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112
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113 HierarchicalZipWriter::Index::~Index()
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114 {
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115 for (Stack::iterator it = stack_.begin(); it != stack_.end(); it++)
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116 {
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117 delete *it;
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118 }
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119 }
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120
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121 std::string HierarchicalZipWriter::Index::CreateFile(const char* name)
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122 {
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123 return GetCurrentDirectoryPath() + EnsureUniqueFilename(name);
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124 }
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125
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126 void HierarchicalZipWriter::Index::CreateDirectory(const char* name)
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127 {
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128 std::string d = EnsureUniqueFilename(name);
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129
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130 // Push the new directory onto the stack
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131 stack_.push_back(new Directory);
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132 stack_.back()->name_ = d;
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133 }
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134
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135 void HierarchicalZipWriter::Index::CloseDirectory()
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136 {
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137 if (IsRoot())
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138 {
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139 // Cannot close the root node
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140 throw OrthancException(ErrorCode_BadSequenceOfCalls);
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141 }
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142
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143 delete stack_.back();
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144 stack_.pop_back();
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145 }
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146
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147
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148 HierarchicalZipWriter::HierarchicalZipWriter(const char* path)
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149 {
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150 writer_.SetOutputPath(path);
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151 writer_.Open();
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152 }
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153
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154 HierarchicalZipWriter::~HierarchicalZipWriter()
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155 {
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156 writer_.Close();
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157 }
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158
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159 void HierarchicalZipWriter::CreateFile(const char* name)
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160 {
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161 std::string p = indexer_.CreateFile(name);
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162 writer_.CreateFileInZip(p.c_str());
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163 }
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164
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165 void HierarchicalZipWriter::CreateDirectory(const char* name)
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166 {
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167 indexer_.CreateDirectory(name);
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168 }
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169
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170 void HierarchicalZipWriter::CloseDirectory()
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171 {
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172 indexer_.CloseDirectory();
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173 }
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174 }