4.6.9 (2022-12-15)

Changes

• The Zlib library updated to version 1.2.13; see the Zlib library change log for more information.

4.6.8 (2022-06-01)

New Features

• Added CZipFileHeader::GetFileTitle , CZipFileHeader::GetFileExtension (thanks to Andrew Truckle)
• Added lpszFileInZip parameter to the CMultiActionsInfo::MultiActionsNext method (thanks to Andrew Truckle)
• Added support and project files for Visual Studio 2022. They are now default project files for the ZipArchive Library.

Changes

• The Zlib library updated to version 1.2.12; see the Zlib library change log for more information.
• The bzlib library updated to version 1.0.8; see the bzlib library change log for more information.
• Stopped support of Visual Studio versions older than 2017 as that became too troublesome to maintain on modern OSes with little benefit at the same time.

Bugs Fixed

• Fixed initialization of the CZipArchive::m_bUseUtcFileTimes variable (thanks to Martin Elger)

4.6.7 (2019-04-17)

New Features

• Added support and project files for Visual Studio 2019. They are now default project files for the ZipArchive Library.
• Supporting reading of non-Zip64 archives with more than 65535 entries in the archive (thanks to Jeffrey Beckwith).

Bugs Fixed

• Various code issue fixes reported by Visual Studio Static Code Analysis "Microsoft Native Recommended Rules" (thanks to Andrew for reporting it)

4.6.6 (2018-07-19)

New Features

• Added CZipArchive::SetFullFileTimes and CZipArchive::IsUseUtcFileTimes

Changes

• Renamed CZipArchive::m_bRemoveDriveLetter to CZipArchive::m_bSafePaths

Bugs Fixed

• Eliminated Zip Slip vurnelability; see Zip Slip Vulnerability for more information (thanks to Ben Greenwald).

4.6.5 (2017-11-25)

New Features

• Added support and project files for Visual Studio 2017. They are now default project files for the ZipArchive Library.

Changes

• Eliminated Visual Studio Code Analysis warnings (thanks to Andrew for reporting it).

4.6.4 (2017-01-23)

New Features

• Added x64 configurations to Visual Studio projects starting from Visual Studio 2005 projects up for ZipArchive and from Visual Studio 2010 for sample applications (thanks to Niels Dekker and Christoph Thien).

Changes

• The Zlib library updated to version 1.2.11; see the Zlib library change log for more information.

Bugs Fixed

• Corrected compilation under MFC x64 (thanks to all that reported it).

4.6.3 (2017-01-05)

New Features

• Added bReplaceMode to the
  CZipArchive::GetFromArchive(CZipArchive&,CZipIndexesArray&) method (thanks to Afonso Lage).
• Allowed forward slashes characters to work with CZipArchive::SetRootPath under Windows.
• Added a new ignorable consistency check CZipArchive::checkTrimmedCentralDir .
• Added a new ignorable consistency check CZipArchive::checkInvalidExtraData .

Changes

• Replaced the call to GetTempFileName with _mktemp_s for more security (thanks to Joel Iwashige for the suggestion).
• Replaced UINT with size_t in CZipMemFile for full 64-bit support (thanks to Axel Lehnert for poining this out).
• The Zlib library updated to version 1.2.10; see the Zlib library change log for more information.

4.6.2 (2015-09-12)

New Features

• Added project files for Visual Studio 2015. These are now default project files for the ZipArchive Library.

Changes

• Under Windows the ZipPlatform::GetFileTimes method can now read file times when there are no permissions for listing files, but there are permissions for reading a file (thanks to Alexander).

Bugs Fixed

• In certain archives directories were not properly detected under Linux/OS X version.
• A workaround for invalid archives not adhering to Zip64 specifications.
• Options dialog was not working in ZipArc when _ZIP_BZIP2 was not defined.
• Under Windows the ZipPlatform::GetFileTimes method was not retrieving the Last Access Time (it was retrieving Last Write Time instead).
• Fixed creation of the local header when Zip64 extensions are used to adhere to the specifications.
• Added a workaround during archive creation for a Windows Compressed Folders problem that cannot read the Zip64 information under certain circumstances (thanks to Alexander for reporting this).
• Avoided creation empty folders during extraction under certain situations (thanks to Alexander).
• Some code cleanup.

4.6.1 (2014-07-26)

New Features

• Added project files for Visual Studio 2013. These are now default project files for the ZipArchive Library.

Bugs Fixed

• Better detection of folders in some invalid archives.
• Fixed performance problems related to CZipString processing (thanks to Alfred Poon for the fix).
• Fixed an issue when sorting of headers with invalid offsets could result in memory access violation (thanks to Alfred Poon for the fix).

4.6.0 (2013-12-15)

New Features

• Added wide char support to Linux/OS X version (normalization is currently not supported).
• Added CZipStorage::GetSplitVolumeName .
• Added -tv switch to zippie.
• Added better errors reporting while testing in zippie.

Changes

• The Zlib library updated to version 1.2.8; see the Zlib library change log for more information.

Bugs Fixed

• Fixed the problem when canceling AddNewFiles compression with a callback resulted in handles not released (thanks to Sarfaraz for reporting it).
• Eliminated runtime check fail with zlib library under Visual Studio (it was harmless, but the warning was nevertheless issued).

4.5.0 (2013-02-25)

New Features

• Added project files for Visual Studio 2012. These are now default project files for the ZipArchive Library.
• Added the possibility to rename files only in the central directory (to make the renaming operation as quick as possible). See CZipFileHeader::SetFileName() .
• iOS support
• When batch adding files, the existing files in an archive can now be automatically replaced. See Compressing Data for more information.
• Added CZipArchive::AddNewFiles(CZipAddFilesEnumerator&, ZipArchiveLib::CFileFilter&, bool) .
• Added the possibility to replace files while batch adding with a files enumerator. See CReplacingAddFilesEnumerator for more information.
• Added the possibility to store modification time in high resolution and additionally to store creation and last access time. For the detailed information, see Modification of Archives: Replacing, Renaming, Deleting and Changing Data (thanks to Alberto.Pierotti).
• Added CZipArchive::SetFullFileTimes() .
• Added CZipArchive::IsFullFileTimes() .
• Added CZipFileHeader::SetCreationTime() .
• Added CZipFileHeader::GetCreationTime() .
• Added CZipFileHeader::SetLastAccessTime() .
• Added CZipFileHeader::GetLastAccessTime() .
• Added ZipPlatform::ConvertTimeToFileTime() .
• Added ZipPlatform::ConvertFileTimeToTime() .
• Added ZipPlatform::fomOnlyIfNewer .
• Added ZIPARCHIVE_VERSION and ZIPARCHIVE_VERSION_NUM macro definitions in the _platform.h file.
• Initial and experimental Android support.

Changes

• Zlib library updated to 1.2.7
• ZipPlatform::DeleteFileMode renamed to ZipPlatform::FileOverwriteMode . The enum values were renamed accordingly.
• Due to customer's request Unicode Support: Using Non-English Characters in Filenames, Comments and Passwords will be supported in future versions and its deprecated status was removed.
• Corrected some Visual Studio compilation warnings.
• Renamed CZipFileHeader::SetTime() to CZipFileHeader::SetModificationTime() and added bFullResolution parameter.
• Renamed CZipFileHeader::GetTime() to CZipFileHeader::GetModificationTime() .
• Renamed ZipPlatform::GetFileModTime() to ZipPlatform::GetFileTimes() and updated to support additionally creation and last access time.
• Renamed ZipPlatform::SetFileModTime() to ZipPlatform::SetFileTimes() and updated to support additionally creation and last access time.

Bugs Fixed

• Fixed "Smaller Type Check" error under Visual Studio (thanks to Nigel Delaforce).
• Fixed compilation errors under XCode 4.4.
• Fixed compilation errors under gcc 4.7.
• Fixed -af zippie switch (thanks to Ciro Ettorre).

4.1.2 (2012-03-03)

Changes

• Zlib library updated to 1.2.6

Bugs Fixed

• An archive was corrupted if replacing a file in the archive with a file that is locked by another process.
• Fixed the situation where removing all files in an archive with self-extract stub resulted in overwriting the stub.
• Recovery from extracting a split archive with missing parts was not possible without a callback.
• Zippie extraction problems with split archives.

4.1.1 (2011-06-27)

New Features

• Added CZipArchive::checkDecryptionVerifier to allow skipping verification of decryption control bytes to recover some invalid archives.

Changes

• CZipString in the STL version no longer derives from std::basic_string<TCHAR> , but uses the STL string as a variable. This is changed because of Visual Studio 2010 having problems with linking it (thanks to Christian Khoukaz for providing the fix).

Bugs Fixed

• Fixed a crash caused by lack of initialization when using Recycle Bin ( ZipPlatform::dfmRecycleBin ) for files removal.
• Fixed a crash when reading extra fields from certain corrupted archives.
• Setting a file modification time after file extraction under Windows could fail when it was locked by a file system notification hook (thanks to Dengg Helmut).
• When CZipArchive is throwing an exception related to an external file (when e.g. adding a non-existing file), it includes now this external file path information in the exception instead of the zip archive path information (thanks to Miroslav Bonchev).
• Fixed trial versions.

4.1.0 (2010-10-31)

New Features

• Added project files for Visual Studio 2010. These are now default project files for the ZipArchive Library.
• Added the possibility to controls overwriting of files during extraction in the CZipArchive::ExtractFile(ZIP_INDEX_TYPE, LPCTSTR) method.
• Added CZipAbstractFile::HasFilePath() method to allow properly using custom file implementations that have no physical paths. That includes using abstract files with the CZipArchive::OpenFrom() method.
• Added the CZipArchive::GetLastIndexAdded() method.
• Very long paths support under Windows is now automatic. There is no need to prefix paths with \\?\ when extracting.

Changes

• Zlib library updated to 1.2.5
• bzip2 library updated to 1.0.6
• Leading path separators are removed from filenames stored in archives.
• When a trailing path separator is added to a file name, this file will be added as a folder.
• File names with trailing path separators in archive and with size 0 are always treated as folders.
• Removed the CZipArchive::SetExhaustiveRead method. Use the CZipArchive::SetSpecialFlags() method instead.
• Removed the CZipArchive::GetExhaustiveRead method. Use the CZipArchive::GetSpecialFlags() method instead.
• The CZipMemFile class derives now from CFile in MFC compilation (but not under Visual Studio 6.0 with _ZIP_FILE_IMPLEMENTATION set to ZIP_ZFI_WIN ).

Bugs Fixed

• Fixed attributes conversion from NTFS system to others.
• When a hidden file was compressed under Windows it received no read permissions when extracted under Linux/OS X. Now it has read permissions for the user.
• When using CZipArchive::umExtra unicode characters were not correctly preserved under some conditions.
• When renaming a file or a directory, problems could occur when FindFast was enabled.
• Fixed a problem when removing files in large archives using Visual Studio 6.0 (thanks to Alexandr Novy).
• Fixed a problem with AES encryption under x64.
• Fixed an issue when extracting archives having Zip64 EoCD locator written when not needed.
• Fixed path separators conversion when using Unicode extra headers (thanks to Miroslav Bonchev for reporting it).
• Fixed an issue when CZipArchive::GetFromArchive() method copied a CRC encrypted file without the data descriptor.

4.0.1 (2009-04-24)

Changes

• Allowed using precompiled headers by correcting the stdafx.h inclusion order.
• Projects for Visual Studio 2010/2008/2005/2003 use now a precompiled header.

Bugs Fixed

• Fixed problem with decompressing spanned archives (thanks to Miroslav Bonchev for reporting it).
• CZipFile::Seek() in the STL version didn't seek on files larger than 2GB when Zip64 was disabled.
• Opening an archive that was not a split archive, was throwing exception when closing an archive even if the iAfterException parameter was set to CZipArchive::afAfterException (thanks to Dragan Milic for reporting it).
• Opening a binary split archive could throw an exception sometimes (thanks to Dragan Milic for the fix).
• Extracting a binary split archive could throw exception with some archives (thanks to Dragan Milic for reporting it).
• Fixed run-time check failure under Visual Studio (a cast to a smaller data type has caused a loss of data) - thanks to James Grocholl for the fix.
• Fixed custom Unicode compilation issues in the Open Source version (thanks to Ralph Valeriote for reporting it).

4.0.0 (2009-03-24)

New Features

• Unicode support compatible with WinZip (Full Version only). See Unicode Support: Using Non-English Characters in Filenames, Comments and Passwords for more information.
• Support for Visual Studio 2008 and GCC 4.x.
• Zip64 is now supported under Windows on all compilers. See Compilation of the ZipArchive Library and Integration with Applications for more information (thanks to Sean Farrow for the suggestion).
• Removed limit of 2GB during file operations when Zip64 was not enabled.
• Allowed batch renaming files for a better performance (see Modification of Archives: Replacing, Renaming, Deleting and Changing Data for more information).
• Custom split archive volumes naming scheme through classes derived from CZipSplitNamesHandler . See Segmented Archives: Splitting and Spanning for more information. It is recommended to use this method instead of modifying of the CZipCallback::m_szExternalFile in a split callback.
• Support for very long file names (more than 260 characters) under Windows (see Compilation of the ZipArchive Library and Integration with Applications for more information).
• Classes derived from CZipAbstractFile allowed in various methods in the CZipArchive class.
• Binary mode for split archives. See Segmented Archives: Splitting and Spanning for more information (thanks to Dragan Milic for suggestion).
• Unicode normalization support under Windows (see Unicode Support: Using Non-English Characters in Filenames, Comments and Passwords for more information).
• Setting code pages is now possible for the CZipArchive::SetPassword() and CZipArchive::SetGlobalComment() methods.
• Added a new consistency check CZipArchive::checkVolumeEntries (disabled by default).
• The following methods and fields were added:
  • CZipArchive::CanModify()
  • CZipArchive::ResetCurrentVolume()
  • CZipArchive::IsZipArchive(LPCTSTR)
  • CZipArchive::IsZipArchive(CZipAbstractFile&, bool)
  • CZipException::m_iSystemError
• Added a possibility to include or exclude empty directories when using the CZipArchive::AddNewFiles() method. See Compressing Data for more information.
• Faster detecting files that are not zip archives when their size is large.

Changes

• The library uses now Visual Studio 2008 project files by default. Project files for other compilers are available and maintained.
• The following compiler macros were renamed:
  • ZIP_ARCHIVE_STL renamed to _ZIP_IMPL_STL .
  • ZIP_ARCHIVE_MFC renamed to _ZIP_IMPL_MFC .
  • ZIP_ARCHIVE_WIN renamed to _ZIP_SYSTEM_WIN .
  • ZIP_ARCHIVE_LNX renamed to _ZIP_SYSTEM_LINUX .
  • _ZIP64 renamed to _ZIP_ZIP64 .
  • _BZIP2 renamed to _ZIP_BZIP2 .
  • ZIP_ARCHIVE_USE_LOCKING renamed to _ZIP_USE_LOCKING .
  • ZIP_ARCHIVE_BZIP2_INTERNAL renamed to _ZIP_BZIP2_INTERNAL .
• Changed opening modes for the CZipArchive::Open(LPCTSTR) method. The ZIP_AUTODETECT_VOLUME_SIZE compiler macro was removed, because it was no longer necessary.
• Allowed direct modifications of CZipFileHeader instead of calling methods of the CZipArchive class.
  • CZipArchive::RenameFile() removed. Use CZipFileHeader::SetFileName() instead.
  • CZipArchive::SetFileHeaderAttr() removed. Use CZipFileHeader::SetSystemAttr() instead.
  • CZipArchive::SetFileComment() removed. Use CZipFileHeader::SetComment() instead.
  • CZipArchive::GetFileComment() removed. Use CZipFileHeader::GetComment() instead.
• The CZipCompressor::methodStore flag allowed in the CZipArchive::SetCompressionMethod() method.
• CZipArchive::GetSegmMode() removed. Use appropriate methods of the CZipStorage class (accessible through the CZipArchive::GetStorage() method).
• Changed endianess detection. ZIP_ARCHIVE_LITTLE_ENDIAN was removed. Define _ZIP_BIG_ENDIAN to compile for big endinan. See Compilation of the ZipArchive Library and Integration with Applications for more information.
• CZipArchive::Close() returns the name of the last volume in the archive. It is useful when handling split archives (to open a split archive, it is required to open the last volume).
• The following methods and fields were renamed:
  • CZipArchive::Flush() renamed to CZipArchive::Finalize() .
  • CZipArchive::SetAutoFlush() renamed to CZipArchive::SetAutoFinalize() .
  • CZipArchive::GetAutoFlush() renamed to CZipArchive::GetAutoFinalize() .
  • CZipActionCallback::cbRename renamed to CZipActionCallback::cbModify .
  • CZipAbstractFile::Seek(ZIP_FILE_USIZE, bool) renamed to CZipAbstractFile::SafeSeek(ZIP_FILE_USIZE, bool) to avoid compilation problems.
  • CZipFileHeader::GetCommentSize() renamed to
    CZipFileHeader::PredictCommentSize() .
  • ZipPlatform::CreateDirectory() renamed to
    ZipPlatform::CreateNewDirectory() to avoid compilation problems.
• Exception CZipException::fileError is now thrown when attributes could not be read from a file (in various places).
• CZipArchive::PredictMaximumFileSizeInArchive() uses now
  CZipFileHeader::m_uComprSize instead of CZipFileHeader::m_uLocalComprSize .
• ZipCompatibility::zcNtfs value changed to 11 to be consistent with other software (thanks to Ken Daraseng for reporting it).
• CZipFile::OpenModes made compatible with CFile modes.
• CZipFileHeader::m_uVersionMadeBy contains now only a "made by " version without the compatibility information.
• When using CZipArchive::SetGlobalComment() , a file inside of archive cannot be opened for compression or extraction.
• To use custom Unicode support in the ZipArchive Library, you need to define now _ZIP_UNICODE_CUSTOM (see Unicode Support: Using Non-English Characters in Filenames, Comments and Passwords for more information).
• When using custom Unicode, CZipStringStoreSettings::m_uCommentCodePage is only used to set a file comment page, not global comment code page. Use the CZipArchive::SetGlobalComment() method instead.
• During modifications, the ZipArchive Library now checks, if the archive can be modified.
• The CZipActionCallback::cbModify does not provide an archive name in the CZipActionCallback::Init() method, because multiple files can be renamed now at once.
• Removed support for MSDN integration in Visual Studio 6.0.
• Bzip2 library updated to 1.0.5 version.

Previous History

To see the history of previous versions, please visit Archived History of Changes in the ZipArchive Library