Mercurial > hg > orthanc
annotate Core/Compression/ZipWriter.cpp @ 250:f23318b11b39
creation of zip files
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 05 Dec 2012 12:29:10 +0100 |
| parents | 5694365ecb96 |
| children | bdd72233b105 |
| rev | line source |
|---|---|
| 136 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege, | |
| 4 * Belgium | |
| 5 * | |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 22 * | |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
| 81 | 33 #include "ZipWriter.h" |
| 34 | |
|
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Sebastien Jodogne <s.jodogne@gmail.com>
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|
35 #include "../../Resources/minizip/zip.h" |
| 81 | 36 #include <boost/date_time/posix_time/posix_time.hpp> |
| 37 | |
| 38 #include "../OrthancException.h" | |
| 39 | |
| 40 | |
| 41 static void PrepareFileInfo(zip_fileinfo& zfi) | |
| 42 { | |
| 43 memset(&zfi, 0, sizeof(zfi)); | |
| 44 | |
| 45 using namespace boost::posix_time; | |
| 46 ptime now = second_clock::local_time(); | |
| 47 | |
| 48 boost::gregorian::date today = now.date(); | |
| 49 ptime midnight(today); | |
| 50 | |
| 51 time_duration sinceMidnight = now - midnight; | |
| 52 zfi.tmz_date.tm_sec = sinceMidnight.seconds(); // seconds after the minute - [0,59] | |
| 53 zfi.tmz_date.tm_min = sinceMidnight.minutes(); // minutes after the hour - [0,59] | |
| 54 zfi.tmz_date.tm_hour = sinceMidnight.hours(); // hours since midnight - [0,23] | |
| 55 | |
| 56 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_day.html | |
| 57 zfi.tmz_date.tm_mday = today.day(); // day of the month - [1,31] | |
| 58 | |
| 59 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_month.html | |
| 60 zfi.tmz_date.tm_mon = today.month() - 1; // months since January - [0,11] | |
| 61 | |
| 62 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_year.html | |
| 63 zfi.tmz_date.tm_year = today.year(); // years - [1980..2044] | |
| 64 } | |
| 65 | |
| 66 | |
| 67 | |
| 68 namespace Orthanc | |
| 69 { | |
| 70 struct ZipWriter::PImpl | |
| 71 { | |
| 72 zipFile file_; | |
| 73 }; | |
| 74 | |
| 75 ZipWriter::ZipWriter() : pimpl_(new PImpl) | |
| 76 { | |
| 77 compressionLevel_ = 6; | |
| 78 hasFileInZip_ = false; | |
| 79 | |
| 80 pimpl_->file_ = NULL; | |
| 81 } | |
| 82 | |
| 83 ZipWriter::~ZipWriter() | |
| 84 { | |
| 85 Close(); | |
| 86 } | |
| 87 | |
| 88 void ZipWriter::Close() | |
| 89 { | |
| 90 if (IsOpen()) | |
| 91 { | |
| 92 zipClose(pimpl_->file_, "Created by Orthanc"); | |
| 93 pimpl_->file_ = NULL; | |
| 94 hasFileInZip_ = false; | |
| 95 } | |
| 96 } | |
| 97 | |
| 98 bool ZipWriter::IsOpen() const | |
| 99 { | |
| 100 return pimpl_->file_ != NULL; | |
| 101 } | |
| 102 | |
| 103 void ZipWriter::Open() | |
| 104 { | |
| 105 if (IsOpen()) | |
| 106 { | |
| 107 return; | |
| 108 } | |
| 109 | |
| 110 if (path_.size() == 0) | |
| 111 { | |
| 112 throw OrthancException("Please call SetOutputPath() before creating the file"); | |
| 113 } | |
| 114 | |
| 115 hasFileInZip_ = false; | |
| 116 pimpl_->file_ = zipOpen64(path_.c_str(), APPEND_STATUS_CREATE); | |
| 117 if (!pimpl_->file_) | |
| 118 { | |
| 119 throw OrthancException(ErrorCode_CannotWriteFile); | |
| 120 } | |
| 121 } | |
| 122 | |
| 123 void ZipWriter::SetOutputPath(const char* path) | |
| 124 { | |
| 125 Close(); | |
| 126 path_ = path; | |
| 127 } | |
| 128 | |
| 129 void ZipWriter::SetCompressionLevel(uint8_t level) | |
| 130 { | |
| 131 if (level >= 10) | |
| 132 { | |
| 133 throw OrthancException("ZIP compression level must be between 0 (no compression) and 9 (highest compression"); | |
| 134 } | |
| 135 | |
| 136 compressionLevel_ = level; | |
| 137 } | |
| 138 | |
| 249 | 139 void ZipWriter::OpenFile(const char* path) |
| 81 | 140 { |
| 141 Open(); | |
| 142 | |
| 143 zip_fileinfo zfi; | |
| 144 PrepareFileInfo(zfi); | |
| 145 | |
| 146 if (zipOpenNewFileInZip64(pimpl_->file_, path, | |
| 147 &zfi, | |
| 148 NULL, 0, | |
| 149 NULL, 0, | |
| 150 "", // Comment | |
| 151 Z_DEFLATED, | |
| 152 compressionLevel_, 1) != 0) | |
| 153 { | |
| 154 throw OrthancException(ErrorCode_CannotWriteFile); | |
| 155 } | |
| 156 | |
| 157 hasFileInZip_ = true; | |
| 158 } | |
| 159 | |
| 160 | |
| 161 void ZipWriter::Write(const std::string& data) | |
| 162 { | |
| 163 if (data.size()) | |
| 164 { | |
| 165 Write(&data[0], data.size()); | |
| 166 } | |
| 167 } | |
| 168 | |
| 169 | |
| 170 void ZipWriter::Write(const char* data, size_t length) | |
| 171 { | |
| 172 if (!hasFileInZip_) | |
| 173 { | |
| 249 | 174 throw OrthancException("Call first OpenFile()"); |
| 81 | 175 } |
| 176 | |
| 177 const size_t maxBytesInAStep = std::numeric_limits<int32_t>::max(); | |
| 178 | |
| 179 while (length > 0) | |
| 180 { | |
| 181 int bytes = static_cast<int32_t>(length <= maxBytesInAStep ? length : maxBytesInAStep); | |
| 182 | |
| 183 if (zipWriteInFileInZip(pimpl_->file_, data, bytes)) | |
| 184 { | |
| 185 throw OrthancException(ErrorCode_CannotWriteFile); | |
| 186 } | |
| 187 | |
| 188 data += bytes; | |
| 189 length -= bytes; | |
| 190 } | |
| 191 } | |
| 192 } |