Mercurial > hg > orthanc
annotate Core/Compression/ZipWriter.cpp @ 102:7593b57dc1bf
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 03 Oct 2012 16:28:13 +0200 |
| parents | 0ec5e2e327b1 |
| children | fe180eae201d |
| rev | line source |
|---|---|
| 81 | 1 #include "ZipWriter.h" |
| 2 | |
|
102
7593b57dc1bf
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
81
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|
3 #include "../../Resources/minizip/zip.h" |
| 81 | 4 #include <boost/date_time/posix_time/posix_time.hpp> |
| 5 | |
| 6 #include "../OrthancException.h" | |
| 7 | |
| 8 | |
| 9 static void PrepareFileInfo(zip_fileinfo& zfi) | |
| 10 { | |
| 11 memset(&zfi, 0, sizeof(zfi)); | |
| 12 | |
| 13 using namespace boost::posix_time; | |
| 14 ptime now = second_clock::local_time(); | |
| 15 | |
| 16 boost::gregorian::date today = now.date(); | |
| 17 ptime midnight(today); | |
| 18 | |
| 19 time_duration sinceMidnight = now - midnight; | |
| 20 zfi.tmz_date.tm_sec = sinceMidnight.seconds(); // seconds after the minute - [0,59] | |
| 21 zfi.tmz_date.tm_min = sinceMidnight.minutes(); // minutes after the hour - [0,59] | |
| 22 zfi.tmz_date.tm_hour = sinceMidnight.hours(); // hours since midnight - [0,23] | |
| 23 | |
| 24 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_day.html | |
| 25 zfi.tmz_date.tm_mday = today.day(); // day of the month - [1,31] | |
| 26 | |
| 27 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_month.html | |
| 28 zfi.tmz_date.tm_mon = today.month() - 1; // months since January - [0,11] | |
| 29 | |
| 30 // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/gregorian/greg_year.html | |
| 31 zfi.tmz_date.tm_year = today.year(); // years - [1980..2044] | |
| 32 } | |
| 33 | |
| 34 | |
| 35 | |
| 36 namespace Orthanc | |
| 37 { | |
| 38 struct ZipWriter::PImpl | |
| 39 { | |
| 40 zipFile file_; | |
| 41 }; | |
| 42 | |
| 43 ZipWriter::ZipWriter() : pimpl_(new PImpl) | |
| 44 { | |
| 45 compressionLevel_ = 6; | |
| 46 hasFileInZip_ = false; | |
| 47 | |
| 48 pimpl_->file_ = NULL; | |
| 49 } | |
| 50 | |
| 51 ZipWriter::~ZipWriter() | |
| 52 { | |
| 53 Close(); | |
| 54 } | |
| 55 | |
| 56 void ZipWriter::Close() | |
| 57 { | |
| 58 if (IsOpen()) | |
| 59 { | |
| 60 zipClose(pimpl_->file_, "Created by Orthanc"); | |
| 61 pimpl_->file_ = NULL; | |
| 62 hasFileInZip_ = false; | |
| 63 } | |
| 64 } | |
| 65 | |
| 66 bool ZipWriter::IsOpen() const | |
| 67 { | |
| 68 return pimpl_->file_ != NULL; | |
| 69 } | |
| 70 | |
| 71 void ZipWriter::Open() | |
| 72 { | |
| 73 if (IsOpen()) | |
| 74 { | |
| 75 return; | |
| 76 } | |
| 77 | |
| 78 if (path_.size() == 0) | |
| 79 { | |
| 80 throw OrthancException("Please call SetOutputPath() before creating the file"); | |
| 81 } | |
| 82 | |
| 83 hasFileInZip_ = false; | |
| 84 pimpl_->file_ = zipOpen64(path_.c_str(), APPEND_STATUS_CREATE); | |
| 85 if (!pimpl_->file_) | |
| 86 { | |
| 87 throw OrthancException(ErrorCode_CannotWriteFile); | |
| 88 } | |
| 89 } | |
| 90 | |
| 91 void ZipWriter::SetOutputPath(const char* path) | |
| 92 { | |
| 93 Close(); | |
| 94 path_ = path; | |
| 95 } | |
| 96 | |
| 97 void ZipWriter::SetCompressionLevel(uint8_t level) | |
| 98 { | |
| 99 if (level >= 10) | |
| 100 { | |
| 101 throw OrthancException("ZIP compression level must be between 0 (no compression) and 9 (highest compression"); | |
| 102 } | |
| 103 | |
| 104 compressionLevel_ = level; | |
| 105 } | |
| 106 | |
| 107 void ZipWriter::CreateFileInZip(const char* path) | |
| 108 { | |
| 109 Open(); | |
| 110 | |
| 111 zip_fileinfo zfi; | |
| 112 PrepareFileInfo(zfi); | |
| 113 | |
| 114 if (zipOpenNewFileInZip64(pimpl_->file_, path, | |
| 115 &zfi, | |
| 116 NULL, 0, | |
| 117 NULL, 0, | |
| 118 "", // Comment | |
| 119 Z_DEFLATED, | |
| 120 compressionLevel_, 1) != 0) | |
| 121 { | |
| 122 throw OrthancException(ErrorCode_CannotWriteFile); | |
| 123 } | |
| 124 | |
| 125 hasFileInZip_ = true; | |
| 126 } | |
| 127 | |
| 128 | |
| 129 void ZipWriter::Write(const std::string& data) | |
| 130 { | |
| 131 if (data.size()) | |
| 132 { | |
| 133 Write(&data[0], data.size()); | |
| 134 } | |
| 135 } | |
| 136 | |
| 137 | |
| 138 void ZipWriter::Write(const char* data, size_t length) | |
| 139 { | |
| 140 if (!hasFileInZip_) | |
| 141 { | |
| 142 throw OrthancException("Call first CreateFileInZip()"); | |
| 143 } | |
| 144 | |
| 145 const size_t maxBytesInAStep = std::numeric_limits<int32_t>::max(); | |
| 146 | |
| 147 while (length > 0) | |
| 148 { | |
| 149 int bytes = static_cast<int32_t>(length <= maxBytesInAStep ? length : maxBytesInAStep); | |
| 150 | |
| 151 if (zipWriteInFileInZip(pimpl_->file_, data, bytes)) | |
| 152 { | |
| 153 throw OrthancException(ErrorCode_CannotWriteFile); | |
| 154 } | |
| 155 | |
| 156 data += bytes; | |
| 157 length -= bytes; | |
| 158 } | |
| 159 } | |
| 160 } |