README
资源名称:unzip540.zip [点击查看]
上传用户:andy_li
上传日期:2007-01-06
资源大小:1019k
文件大小:3k
源码类别:
压缩解压
开发平台:
MultiPlatform
- UnZip 5.4 for BeOS
- NOTE:
- If you want to build UnZip 5.4 or later from the source, you'll need to
- have the "xres" tool installed (unless you remove the "xres" lines in the
- beos/Makefile). This will cease to be a problem when BeOS R4 ships this
- fall. Until then, you can get xres from
- ftp://ftp.be.com/pub/experimental/tools/xres-102.zip.
- HISTORY
- UnZip 5.30 was the first official release of Info-ZIP's UnZip to support
- the filesystem in BeOS.
- UnZip 5.31 added support for the new filesystem that appeared in the
- Advanced Access Preview (aka DR9) Release of BeOS.
- UnZip 5.32 added several important bug fixes.
- UnZip 5.4:
- - supports BeOS on x86 hardware (and cross-compiling, if a compiler is
- present)
- - ask the Registrar to assign a file type to files that don't have one
- - adds a new -J option on BeOS; this lets you extract the data for a file
- without restoring its file attributes (handy if you stumble on really
- old BeOS ZIP archives... from before BeOS Preview Release)
- - will restore attributes properly on symbolic links (you'll need
- zip 2.21 or later to create ZIP files that store attributes for
- symbolic links)
- *** WARNING ***
- You may find some extremely old BeOS zip archives that store their
- file attributes differently; these will be from DR8 and earlier (when
- BeOS copied the MacOS type/creator fields instead of using the current
- extremely flexible scheme).
- You can still unpack the _data_ in older zip files, but you won't be
- able to recover the file attributes in those archives. Use the -J option
- with these files or you'll get "compressed EA data missing" and "zipfile
- probably corrupt" errors, even though the data is intact!
- The new scheme makes handling BeOS file attributes much more robust, and
- allows for possible future expansion without another round of
- incompatibilities.
- That's life on the edge!
- *** WARNING ***
- The new filesystem allows for huge files (up to several terabytes!) with
- huge amounts of meta-data (up to several terabytes!). The existing ZIP
- format was designed when this much data on a personal computer was
- science fiction; as a result, it's quite possible that large amounts of file
- attributes (more than maybe 100+K bytes) could be truncated. Zip and UnZip
- try to deal with this in a fairly sensible way, working on the assumption
- that the data in the file is more important than the data in the file
- attributes.
- One way to run into this problem is to mount an HFS volume and zip
- some Mac files that have large resources attached to them. This
- happens more often than you'd expect; I've seen several 0-byte files that
- had over four megabytes of resources. Even more stupid, these resources
- were _data_ (sound for a game), and could have been easily stored as
- data...
- KNOWN BUGS
- None! Yahoo!
- Please report any bugs to Zip-Bugs@lists.wku.edu.
- - Chris Herborth (chrish@qnx.com)
- November 2/1998