Mercurial > hg > orthanc
annotate Core/Compression/ZipWriter.cpp @ 633:e207b33216db
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| author | jodogne |
|---|---|
| date | Tue, 29 Oct 2013 09:04:25 +0100 |
| parents | 3f27814104f7 |
| children | eb5a0b21d05e |
| rev | line source |
|---|---|
| 136 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 398 | 3 * Copyright (C) 2012-2013 Medical Physics Department, CHU of Liege, |
| 136 | 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 | |
| 568 | 32 #ifdef _WIN32 |
| 33 #define NOMINMAX | |
| 34 #endif | |
| 136 | 35 |
| 81 | 36 #include "ZipWriter.h" |
| 37 | |
|
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Sebastien Jodogne <s.jodogne@gmail.com>
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81
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|
38 #include "../../Resources/minizip/zip.h" |
| 81 | 39 #include <boost/date_time/posix_time/posix_time.hpp> |
| 568 | 40 #include <limits> |
| 81 | 41 |
| 42 #include "../OrthancException.h" | |
| 43 | |
| 44 | |
| 45 static void PrepareFileInfo(zip_fileinfo& zfi) | |
| 46 { | |
| 47 memset(&zfi, 0, sizeof(zfi)); | |
| 48 | |
| 49 using namespace boost::posix_time; | |
| 50 ptime now = second_clock::local_time(); | |
| 51 | |
| 52 boost::gregorian::date today = now.date(); | |
| 53 ptime midnight(today); | |
| 54 | |
| 55 time_duration sinceMidnight = now - midnight; | |
| 56 zfi.tmz_date.tm_sec = sinceMidnight.seconds(); // seconds after the minute - [0,59] | |
| 57 zfi.tmz_date.tm_min = sinceMidnight.minutes(); // minutes after the hour - [0,59] | |
| 58 zfi.tmz_date.tm_hour = sinceMidnight.hours(); // hours since midnight - [0,23] | |
| 59 | |
| 60 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_day.html | |
| 61 zfi.tmz_date.tm_mday = today.day(); // day of the month - [1,31] | |
| 62 | |
| 63 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_month.html | |
| 64 zfi.tmz_date.tm_mon = today.month() - 1; // months since January - [0,11] | |
| 65 | |
| 66 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_year.html | |
| 67 zfi.tmz_date.tm_year = today.year(); // years - [1980..2044] | |
| 68 } | |
| 69 | |
| 70 | |
| 71 | |
| 72 namespace Orthanc | |
| 73 { | |
| 74 struct ZipWriter::PImpl | |
| 75 { | |
| 76 zipFile file_; | |
| 77 }; | |
| 78 | |
| 79 ZipWriter::ZipWriter() : pimpl_(new PImpl) | |
| 80 { | |
| 81 compressionLevel_ = 6; | |
| 82 hasFileInZip_ = false; | |
| 83 | |
| 84 pimpl_->file_ = NULL; | |
| 85 } | |
| 86 | |
| 87 ZipWriter::~ZipWriter() | |
| 88 { | |
| 89 Close(); | |
| 90 } | |
| 91 | |
| 92 void ZipWriter::Close() | |
| 93 { | |
| 94 if (IsOpen()) | |
| 95 { | |
| 96 zipClose(pimpl_->file_, "Created by Orthanc"); | |
| 97 pimpl_->file_ = NULL; | |
| 98 hasFileInZip_ = false; | |
| 99 } | |
| 100 } | |
| 101 | |
| 102 bool ZipWriter::IsOpen() const | |
| 103 { | |
| 104 return pimpl_->file_ != NULL; | |
| 105 } | |
| 106 | |
| 107 void ZipWriter::Open() | |
| 108 { | |
| 109 if (IsOpen()) | |
| 110 { | |
| 111 return; | |
| 112 } | |
| 113 | |
| 114 if (path_.size() == 0) | |
| 115 { | |
| 116 throw OrthancException("Please call SetOutputPath() before creating the file"); | |
| 117 } | |
| 118 | |
| 119 hasFileInZip_ = false; | |
| 120 pimpl_->file_ = zipOpen64(path_.c_str(), APPEND_STATUS_CREATE); | |
| 121 if (!pimpl_->file_) | |
| 122 { | |
| 123 throw OrthancException(ErrorCode_CannotWriteFile); | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 void ZipWriter::SetOutputPath(const char* path) | |
| 128 { | |
| 129 Close(); | |
| 130 path_ = path; | |
| 131 } | |
| 132 | |
| 133 void ZipWriter::SetCompressionLevel(uint8_t level) | |
| 134 { | |
| 135 if (level >= 10) | |
| 136 { | |
| 137 throw OrthancException("ZIP compression level must be between 0 (no compression) and 9 (highest compression"); | |
| 138 } | |
| 139 | |
| 140 compressionLevel_ = level; | |
| 141 } | |
| 142 | |
| 249 | 143 void ZipWriter::OpenFile(const char* path) |
| 81 | 144 { |
| 145 Open(); | |
| 146 | |
| 147 zip_fileinfo zfi; | |
| 148 PrepareFileInfo(zfi); | |
| 149 | |
| 150 if (zipOpenNewFileInZip64(pimpl_->file_, path, | |
| 151 &zfi, | |
| 152 NULL, 0, | |
| 153 NULL, 0, | |
| 154 "", // Comment | |
| 155 Z_DEFLATED, | |
| 156 compressionLevel_, 1) != 0) | |
| 157 { | |
| 158 throw OrthancException(ErrorCode_CannotWriteFile); | |
| 159 } | |
| 160 | |
| 161 hasFileInZip_ = true; | |
| 162 } | |
| 163 | |
| 164 | |
| 165 void ZipWriter::Write(const std::string& data) | |
| 166 { | |
| 167 if (data.size()) | |
| 168 { | |
| 169 Write(&data[0], data.size()); | |
| 170 } | |
| 171 } | |
| 172 | |
| 173 | |
| 174 void ZipWriter::Write(const char* data, size_t length) | |
| 175 { | |
| 176 if (!hasFileInZip_) | |
| 177 { | |
| 249 | 178 throw OrthancException("Call first OpenFile()"); |
| 81 | 179 } |
| 180 | |
| 181 const size_t maxBytesInAStep = std::numeric_limits<int32_t>::max(); | |
| 182 | |
| 183 while (length > 0) | |
| 184 { | |
| 185 int bytes = static_cast<int32_t>(length <= maxBytesInAStep ? length : maxBytesInAStep); | |
| 186 | |
| 187 if (zipWriteInFileInZip(pimpl_->file_, data, bytes)) | |
| 188 { | |
| 189 throw OrthancException(ErrorCode_CannotWriteFile); | |
| 190 } | |
| 191 | |
| 192 data += bytes; | |
| 193 length -= bytes; | |
| 194 } | |
| 195 } | |
| 196 } |