Mercurial > hg > orthanc

annotate Core/Compression/ZipWriter.cpp @ 3921:f6ccff28fbed transcoding

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 12 May 2020 19:21:52 +0200
parents 94f4a18a79cc
children 0b3256c3ee14
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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) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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32
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33
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34 #include "../PrecompiledHeaders.h"
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35
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36 #ifndef NOMINMAX
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37 #define NOMINMAX
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38 #endif
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39
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40 #include "ZipWriter.h"
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41
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42 #include <limits>
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43 #include <boost/filesystem.hpp>
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44 #include <boost/date_time/posix_time/posix_time.hpp>
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45
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46 #include "../../Resources/ThirdParty/minizip/zip.h"
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47 #include "../OrthancException.h"
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48 #include "../Logging.h"
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51 static void PrepareFileInfo(zip_fileinfo& zfi)
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52 {
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53 memset(&zfi, 0, sizeof(zfi));
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54
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55 using namespace boost::posix_time;
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56 ptime now = second_clock::local_time();
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57
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58 boost::gregorian::date today = now.date();
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59 ptime midnight(today);
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61 time_duration sinceMidnight = now - midnight;
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62 zfi.tmz_date.tm_sec = static_cast<unsigned int>(sinceMidnight.seconds()); // seconds after the minute - [0,59]
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63 zfi.tmz_date.tm_min = static_cast<unsigned int>(sinceMidnight.minutes()); // minutes after the hour - [0,59]
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64 zfi.tmz_date.tm_hour = static_cast<unsigned int>(sinceMidnight.hours()); // hours since midnight - [0,23]
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66 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_day.html
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67 zfi.tmz_date.tm_mday = today.day(); // day of the month - [1,31]
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69 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_month.html
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70 zfi.tmz_date.tm_mon = today.month() - 1; // months since January - [0,11]
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72 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_year.html
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73 zfi.tmz_date.tm_year = today.year(); // years - [1980..2044]
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74 }
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78 namespace Orthanc
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79 {
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80 struct ZipWriter::PImpl
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81 {
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82 zipFile file_;
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84 PImpl() : file_(NULL)
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85 {
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86 }
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87 };
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88
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89 ZipWriter::ZipWriter() :
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90 pimpl_(new PImpl),
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91 isZip64_(false),
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92 hasFileInZip_(false),
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93 append_(false),
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94 compressionLevel_(6)
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95 {
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96 }
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97
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98 ZipWriter::~ZipWriter()
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99 {
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100 Close();
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101 }
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102
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103 void ZipWriter::Close()
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104 {
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105 if (IsOpen())
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106 {
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107 zipClose(pimpl_->file_, "Created by Orthanc");
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108 pimpl_->file_ = NULL;
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109 hasFileInZip_ = false;
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110 }
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111 }
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112
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113 bool ZipWriter::IsOpen() const
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114 {
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115 return pimpl_->file_ != NULL;
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116 }
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117
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118 void ZipWriter::Open()
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119 {
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120 if (IsOpen())
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121 {
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122 return;
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123 }
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124
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125 if (path_.size() == 0)
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126 {
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127 throw OrthancException(ErrorCode_BadSequenceOfCalls,
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128 "Please call SetOutputPath() before creating the file");
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129 }
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130
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131 hasFileInZip_ = false;
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132
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133 int mode = APPEND_STATUS_CREATE;
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134 if (append_ &&
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135 boost::filesystem::exists(path_))
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136 {
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137 mode = APPEND_STATUS_ADDINZIP;
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138 }
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139
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140 if (isZip64_)
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141 {
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142 pimpl_->file_ = zipOpen64(path_.c_str(), mode);
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143 }
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144 else
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145 {
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146 pimpl_->file_ = zipOpen(path_.c_str(), mode);
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147 }
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148
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149 if (!pimpl_->file_)
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150 {
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151 throw OrthancException(ErrorCode_CannotWriteFile,
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152 "Cannot create new ZIP archive: " + path_);
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153 }
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154 }
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155
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156 void ZipWriter::SetOutputPath(const char* path)
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157 {
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158 Close();
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159 path_ = path;
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160 }
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161
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162 void ZipWriter::SetZip64(bool isZip64)
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163 {
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164 Close();
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165 isZip64_ = isZip64;
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166 }
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167
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168 void ZipWriter::SetCompressionLevel(uint8_t level)
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169 {
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170 if (level >= 10)
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171 {
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172 throw OrthancException(ErrorCode_ParameterOutOfRange,
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173 "ZIP compression level must be between 0 (no compression) "
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174 "and 9 (highest compression)");
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175 }
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176
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177 Close();
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178 compressionLevel_ = level;
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179 }
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180
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181 void ZipWriter::OpenFile(const char* path)
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182 {
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183 Open();
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184
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185 zip_fileinfo zfi;
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186 PrepareFileInfo(zfi);
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187
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188 int result;
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189
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190 if (isZip64_)
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191 {
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192 result = zipOpenNewFileInZip64(pimpl_->file_, path,
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193 &zfi,
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194 NULL, 0,
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195 NULL, 0,
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196 "", // Comment
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197 Z_DEFLATED,
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198 compressionLevel_, 1);
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199 }
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200 else
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201 {
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202 result = zipOpenNewFileInZip(pimpl_->file_, path,
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203 &zfi,
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204 NULL, 0,
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205 NULL, 0,
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206 "", // Comment
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207 Z_DEFLATED,
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208 compressionLevel_);
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209 }
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210
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211 if (result != 0)
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212 {
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213 throw OrthancException(ErrorCode_CannotWriteFile,
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214 "Cannot add new file inside ZIP archive: " + std::string(path));
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215 }
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216
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217 hasFileInZip_ = true;
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218 }
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219
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220
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221 void ZipWriter::Write(const std::string& data)
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222 {
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223 if (data.size())
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224 {
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225 Write(&data[0], data.size());
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226 }
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227 }
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228
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229
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230 void ZipWriter::Write(const char* data, size_t length)
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231 {
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232 if (!hasFileInZip_)
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233 {
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234 throw OrthancException(ErrorCode_BadSequenceOfCalls, "Call first OpenFile()");
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235 }
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236
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237 const size_t maxBytesInAStep = std::numeric_limits<int32_t>::max();
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238
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239 while (length > 0)
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240 {
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241 int bytes = static_cast<int32_t>(length <= maxBytesInAStep ? length : maxBytesInAStep);
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242
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243 if (zipWriteInFileInZip(pimpl_->file_, data, bytes))
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244 {
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245 throw OrthancException(ErrorCode_CannotWriteFile,
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246 "Cannot write data to ZIP archive: " + path_);
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247 }
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248
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249 data += bytes;
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250 length -= bytes;
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251 }
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252 }
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253
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254
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255 void ZipWriter::SetAppendToExisting(bool append)
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256 {
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257 Close();
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258 append_ = append;
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259 }
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260 }