annotate Core/Compression/ZipWriter.cpp @ 1001:f3929718ea7e lua-scripting

autorouting primitives
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 04 Jul 2014 15:31:42 +0200
parents 8811abd6aec9
children 46bca019587e
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2014 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 "../PrecompiledHeaders.h"
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34
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35 #ifndef NOMINMAX
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36 #define NOMINMAX
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37 #endif
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38
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39 #include "ZipWriter.h"
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40
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41 #include "../../Resources/ThirdParty/minizip/zip.h"
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42 #include <boost/date_time/posix_time/posix_time.hpp>
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43 #include <limits>
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45 #include "../OrthancException.h"
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47
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48 static void PrepareFileInfo(zip_fileinfo& zfi)
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49 {
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50 memset(&zfi, 0, sizeof(zfi));
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51
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52 using namespace boost::posix_time;
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53 ptime now = second_clock::local_time();
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54
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55 boost::gregorian::date today = now.date();
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56 ptime midnight(today);
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57
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58 time_duration sinceMidnight = now - midnight;
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59 zfi.tmz_date.tm_sec = sinceMidnight.seconds(); // seconds after the minute - [0,59]
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60 zfi.tmz_date.tm_min = sinceMidnight.minutes(); // minutes after the hour - [0,59]
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61 zfi.tmz_date.tm_hour = sinceMidnight.hours(); // hours since midnight - [0,23]
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63 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_day.html
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64 zfi.tmz_date.tm_mday = today.day(); // day of the month - [1,31]
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66 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_month.html
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67 zfi.tmz_date.tm_mon = today.month() - 1; // months since January - [0,11]
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69 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_year.html
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70 zfi.tmz_date.tm_year = today.year(); // years - [1980..2044]
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71 }
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75 namespace Orthanc
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76 {
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77 struct ZipWriter::PImpl
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78 {
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79 zipFile file_;
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80 };
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81
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82 ZipWriter::ZipWriter() : pimpl_(new PImpl)
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83 {
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84 compressionLevel_ = 6;
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85 hasFileInZip_ = false;
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86 isZip64_ = false;
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88 pimpl_->file_ = NULL;
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89 }
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90
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91 ZipWriter::~ZipWriter()
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92 {
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93 Close();
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94 }
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95
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96 void ZipWriter::Close()
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97 {
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98 if (IsOpen())
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99 {
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100 zipClose(pimpl_->file_, "Created by Orthanc");
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101 pimpl_->file_ = NULL;
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102 hasFileInZip_ = false;
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103 }
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104 }
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105
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106 bool ZipWriter::IsOpen() const
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107 {
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108 return pimpl_->file_ != NULL;
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109 }
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110
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111 void ZipWriter::Open()
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112 {
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113 if (IsOpen())
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114 {
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115 return;
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116 }
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117
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118 if (path_.size() == 0)
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119 {
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120 throw OrthancException("Please call SetOutputPath() before creating the file");
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121 }
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122
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123 hasFileInZip_ = false;
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124
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125 if (isZip64_)
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126 {
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127 pimpl_->file_ = zipOpen64(path_.c_str(), APPEND_STATUS_CREATE);
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128 }
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129 else
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130 {
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131 pimpl_->file_ = zipOpen(path_.c_str(), APPEND_STATUS_CREATE);
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132 }
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133
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134 if (!pimpl_->file_)
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135 {
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136 throw OrthancException(ErrorCode_CannotWriteFile);
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137 }
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138 }
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139
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140 void ZipWriter::SetOutputPath(const char* path)
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141 {
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142 Close();
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143 path_ = path;
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144 }
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145
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146 void ZipWriter::SetZip64(bool isZip64)
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147 {
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148 Close();
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149 isZip64_ = isZip64;
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150 }
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151
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152 void ZipWriter::SetCompressionLevel(uint8_t level)
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153 {
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154 if (level >= 10)
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155 {
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156 throw OrthancException("ZIP compression level must be between 0 (no compression) and 9 (highest compression");
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157 }
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158
644
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159 Close();
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160 compressionLevel_ = level;
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161 }
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162
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163 void ZipWriter::OpenFile(const char* path)
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164 {
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165 Open();
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166
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167 zip_fileinfo zfi;
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168 PrepareFileInfo(zfi);
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169
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170 int result;
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171
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172 if (isZip64_)
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173 {
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174 result = zipOpenNewFileInZip64(pimpl_->file_, path,
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175 &zfi,
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176 NULL, 0,
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177 NULL, 0,
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178 "", // Comment
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179 Z_DEFLATED,
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180 compressionLevel_, 1);
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181 }
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182 else
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183 {
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184 result = zipOpenNewFileInZip(pimpl_->file_, path,
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185 &zfi,
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186 NULL, 0,
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187 NULL, 0,
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188 "", // Comment
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189 Z_DEFLATED,
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190 compressionLevel_);
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191 }
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192
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193 if (result != 0)
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194 {
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195 throw OrthancException(ErrorCode_CannotWriteFile);
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196 }
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197
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198 hasFileInZip_ = true;
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199 }
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200
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201
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202 void ZipWriter::Write(const std::string& data)
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203 {
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204 if (data.size())
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205 {
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206 Write(&data[0], data.size());
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207 }
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208 }
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209
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210
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211 void ZipWriter::Write(const char* data, size_t length)
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212 {
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213 if (!hasFileInZip_)
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214 {
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215 throw OrthancException("Call first OpenFile()");
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216 }
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217
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218 const size_t maxBytesInAStep = std::numeric_limits<int32_t>::max();
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219
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220 while (length > 0)
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221 {
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222 int bytes = static_cast<int32_t>(length <= maxBytesInAStep ? length : maxBytesInAStep);
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223
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224 if (zipWriteInFileInZip(pimpl_->file_, data, bytes))
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225 {
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226 throw OrthancException(ErrorCode_CannotWriteFile);
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227 }
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228
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229 data += bytes;
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230 length -= bytes;
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231 }
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232 }
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233 }