YuZip: Version History

• Compression libraries update:
  • YuXz to XZ v5.6.2.
  • Yu7zip, with PPMd and LZMA compression and decompression, to 7-Zip v24.07.

• Compression libraries update:
  • XZ v5.6.1.
  • zlib v1.3.1.
  • zlib-ng v2.1.6.
  • Zstandard v1.5.6.

• Update XZ to v5.4.5.
• Update zlib-ng to v2.1.5.

• Support Delphi 12 Athens Win32 and Win64.
• New TYuDeflateZlibNgCompressor for TDIZipWriter. It uses zlib-ng for up to four times faster deflate compression on Win64.
• For zlib deflate compression, use the new TYuDeflateZlibCompressor compressor.
• The old TYuDeflateCompressor is still available for backwards compatibility and maps to TYuDeflateZlibCompressor. It is marked as deprecated.

• Fix a YuZip error which could cause Zstandard extraction to fail in Win32. Win64 was not affected.
• Fix conversion between universal time and local time for zip_stat_t.mtime. zip_stat_t.mtime is in UCT and should be converted to localtime for display. The YuZip_ArchiveManager demo has been updated accordingly.
• The YuZip_ArchiveManager demo reads high precision times from extra fields, if available. This applies to both display and file extraction.
• Update XZ v5.4.4.
• Update zlib to v1.3.

• Rename DIZipWriter to YuZip so it reflects the added new features to open, extract from, modify existing ZIP archives, and more.
• Add the YuZip.pas unit, a port of the libzip C library to Delphi, which implements the features outlined above, plus many more.
• New \Demos\YuZip_ArchiveManager\ demo, a simple ZIP archive GUI inspired by 7-Zip.
• Update Yu7zip, with PPMd and LZMA compression and decompression, to 7-Zip v23.01.

• Updated compression libraries:
  • XZ v5.4.3:
    • Fixed a minor bug in lzma_str_from_filters that produced too many filters in the output string instead of reporting an error if the input array had more than four filters.
  • Zstandard v1.5.5:
    • Fix a rare corruption bug affecting the high compression mode.
    • Improve mid-level compression speed.

• Updated compression libraries:
  • XZ v5.4.1, with bug fixes and new features.
  • Zstandard v1.5.4, with bug fixes, new features, and performance enhancements.

• New TYuPpmdCompressor: Compress using the PPMd compression algorithm. Achieves excellent compression ratios especially for textual data. Decompression is widely supported, for example by 7-Zip.
• The PPMd compression algorithm is from 7-zip and interfaced in the Yu7zip unit.
• Update XZ compression library to v5.2.8.

• Updated compression libraries:
  • zlib v1.2.13.
  • XZ v5.2.7.
  • Zstandard v1.5.2.
• Compression algorithms now ship as their own .pas / .dcu unit files.
• Fix missing DIZlibConsts.pas: All resourcestrings are now in DIZipConsts.
• New DIZipWriter_DIFileFinder.dpr demo project, upon user request.

• Update the built-in zstd compressor for TYuZstdCompressor to Zstandard 1.5.1.
• Add TYuZstdCompressor to the DIZipWriter_Main demo.

• Support Delphi 11 Alexandria Win32 and Win64.

• New TYuZstdCompressor: Compress using the modern Zstandard compression algorithm. It combines fast compression with high compression ratios. Decompression is super fast and supported by 7-Zip 24.01 or newer.

• New TYuXzCompressor: Compress using the XZ compression algorithm, with secure data integrity check.
• TDIZipWriter.CloseZip returns the position of ZipStream right after the end of the ZIP archive. This value can be used to trim the stream or file in case extra data was previously written by CloseCurrentEntry which failed and reset the stream position.

• Support Delphi 10.4 Sydney Win32 and Win64.

Delphi compilers with support for the inline directive (starting with Delphi 2005) failed to compile DIZipWriter *.bpl packages for the Demo and Commercial editions. They generated a “[dcc32 Fatal Error] DIUtils: F2051 Unit DIContainers was compiled with a different version of DIUtils.StrSameIW”. Regular *.exe applications compiled without problems. The DIZipWriter Source Code also compiled to both *.bpl packages and *.exe applications with no problems.

• Update the TYuBZip2Compressor compression engine to bzip2 1.0.8.
• Improve DIUtils.pas Unicode processing to support Unicode Code Points from $000000 to $10FFFF. Adjust remaining source code accordingly.
• Update DIUtils.pas Unicode functions to Unicode 12.1.0.
• Remove DI.inc include file. Directly link in DICompilers.inc instead.
• Remove support for the DI_No_ZipWriter_Component compiler directive. TDIZipWriter now always descends from TComponent. Affects source code only.
• Remove support for the DI_No_Classes compiler directive. The Classes unit is always used. Source code only.
• Rename DI_No_Range_Checking compiler directive to DIC_Unsafe. Source code only.

• Replace some old units in the DIZipWriter_Dxx.dpk requires clause which prevented compilation.

• Support Delphi 10.3 Rio Win32 and Win64.
• TYuLzmaCompressor sets end of stream flag as required by recent versions of 7-Zip.

• Support Delphi 10.2 Tokyo Win32 and Win64.

• Deflate compressior engine update.

• Deflate compressior engine update.
• LZMA compressor engine update.

• Support Delphi 10.1 Berlin Win32 and Win64.

• Use AES hardware encryption if available.
• Minor LZMA compression update.

• Support Delphi 10 Seattle Win32 and Win64.

• LZMA compression update: Faster buffer comparison plus other speed optimizations.

• Add support for Delphi XE8 Win32 and Win64.

• Correct the file header bit which flags UTF-8 encoded file names. This prevented some ZIP reading software to decode Unicode file names.

• Support Delphi XE7 Win32 and Win64.
• Improved documentation shows inherited class members.

• Support Delphi XE6 Win32 and Win64.

• Compatibility update with other Yunqa products.

• Support Delphi XE5 Win32 and Win64.

• New: Pluggable Compressor interface.
• Free choice of compression algorithms:
  • TYuDeflateCompressor: The ZIP default. Fast, average compression ratio.
  • New TYuStoreCompressor: No compression, but extremely fast.
  • New TYuBZip2Compressor: Somewhat slower but better compression ratio.
  • New TYuLzmaCompressor: Slow and memory demanding but excellent compression ratio.
• New: Zip64 support allows a virtually unlimited number of entries of virtually unlimited size.
• New: Unicode support for entry names, automatic UTF-8 conversion if needed (and only then).
• New: Support Delphi XE4 Win32 and Win64.
• Optimizations and bug fixes.
• Terminate Delphi 4, Delphi 5, and Delphi 6 support.

• Support Delphi XE3 Win32 and Win64.
• Enforce that an entry name must be a relative path.

• Support Delphi XE2 Win64.
• A bug in TDIWriter.Write caused ZIP archives to be written incorrectly. Fixed.

• Support Delphi XE2 Win32.

• Compatibility update for parallel usage with other Yunqa Delphi products.

• Delphi XE support.

• Update zlib compression to 1.2.4.
• Completely revised the help generator to ease navigation and improve readability. Send your feedback!

• Additions and bug fixes to DIUtils.pas.

• Delphi 2010 support.

• Work around an unexpected Delphi 2009 automatic numeric AnsiChar Unicode conversion in DIUtils.pas which caused an error when compiled on a Windows OS set to a non-European (Asian, Cyrillic, etc.) codepage.

• Delphi 2009 support.

• Improve compatibility for parallel installation with other DI packages.

• Delphi 2007 support.

• Added compatibility with Delphi 2006 Win32.

• Added Delphi 3 compatibility to the utility units.
• Resolved dependency issues when DIZipWriter is used in parallel with other DI products.

• Fixed a small packaging bug in the Demo edition which unfortunately slipped into the last update. Commercial and Source code editions do not require this update.

• Updated to use the latest version of the zlib compression library.
• Recompiled the zlib library with Delphi-omtimized register calling conventions for improved performance.
• Comatability when used in parallel with other Delphi Inspration products.

• Added support for Delphi 2005 Win32.
• Added advanced AES 128-, 192, and 256-bit AES encryption compatible with WinZip 9.0, which provide much greater cryptographic security than the traditional Zip 2.0 encryption method. At the time of writing, there is no other known Delphi ZIP component supporting this high level of secutiry. AES encrypted ZIP files created with DIZipWriter can be opened and extracted with WinZip just like regular ZIP files with no or standard encryption.
• The new TDIZipWriter.DataType property allows to determine the data type attribute for each ZIP entry. The options are dtBinary, dtText, or dtUnknown. For the latter, TDIZipWriter determines the data type automatically. This new property was explicitly requested by some users who found that certain ZIP software apparently unzips differently depending on the data type.
• Updated the deflate compression engine.

• Improved Exception Handling for running out of disk space.
• Shortened the following methods of TDIZipWriter:

• Established compiler compatibility with other Delphi Inspiration products.

• Established compiler compatibility with other Delphi Inspiration products.

• Both NewZipFile and NewZipStream have an OffSet parameter which specifies the final position of the Zip archive within the output file or stream. While Offset is usually zero, it might differ when appending a Zip archive to a SFX stub in order to create self extracting Zip archvies. There are SFX stubs freely available on the Internet.
• Improved error handling in case of stream write errors, like when running out of disk space.
• Established compiler compatibility with other Delphi Inpiration products.

• Worked around a compiler and linker bug in D4, D5, D6 and D7 where Delphi terminates comilation with an error if any code with WideChar set constants is compiled with TD32 Debug Info enabled.

• Updated for Delphi 7 compatibility.
• Passing an empty string to NewZipFile now raises an exception just as any other new .zip file which can not be created.

• Initial public release.