[openbeos] Re: ZipOMatic beta 1 & Packed Archived File System files
- From: "Alexander G. M. Smith" <agmsmith@xxxxxxxxxx>
- To: openbeos@xxxxxxxxxxxxx
- Date: Sat, 26 Jul 2003 14:01:16 -0400 EDT
Jonas Sundstrom wrote on Sat, 26 Jul 2003 00:15:52 +0200 CEST:
> Zip is -the- BeOS format. No other format, afaik,
> preserves the extended attributes of the Be filesystem.
> The system defaults and the apps that come with the OS
> provides the user with a blessed way. A best practice.
I'm working on one, since I need to store AGMS links (like MacOS alias or Unix
hard links) as well as attributes, files, directories, indices and whatever odd
things I come up with for my RAM file system. So rather than hacking up ZIP,
I've got a simple text file format, that's optionally run through zLib's
Deflate (and maybe later bzip2) to get compression similar to ZIP. FYI here's
a sample of the uncompressed text format of a Packed Archived File System file:
{ Create Index
Name=BEOS:APP_SIG
PrimitiveType=CSTR
PosixSize=16384
PosixOwner=0
PosixGroup=0
DateCreatedMicrosecondsSince1970=1057759330000000
DateModifiedMicrosecondsSince1970=1057759330000000
}
{ Create Index
Name=MAIL:subject
PrimitiveType=CSTR
PosixSize=25600
PosixOwner=0
PosixGroup=0
DateCreatedMicrosecondsSince1970=1057760021000000
DateModifiedMicrosecondsSince1970=1057760021000000
}
[...]
{ Create Thing
PosixEquivalentThing=File
Path=in/[openbeos] ZipOMatic beta 1 20030725181552 Jonas Sundstrom
PosixSize=4354
PosixOwner=0
PosixGroup=0
PosixMode=00644
DateCreatedMicrosecondsSince1970=1059233039000000
DateAccessedMicrosecondsSince1970=1059241828000000
DateModifiedMicrosecondsSince1970=1059233039000000
DateMetaChangedMicrosecondsSince1970=1059233039000000
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pperThread, or by the Pulse() hook. \r\n\r\n> btw, good job.\r\n\r\nThanks! \
\r\n\r\nIt's hard getting it all right. There are probably more bugs/flaws in \
\r\nthere,\r\nbut this is a community project, so that takes some weight off m\
y \r\nshoulders. Now I just want to clean it up and get it into cvs.\r\n\r\n/J\
onas Sundstr\366m. www.kirilla.com\r\n\r\n\r\n
}
{ Create Thing
PosixEquivalentThing=Attribute
Path=in/[openbeos] ZipOMatic beta 1 20030725181552 Jonas Sundstrom/BEOS:TYPE
PrimitiveType=MIMS
PosixSize=13
Data=text/x-email\000
}
{ Create Thing
PosixEquivalentThing=Attribute
Path=in/[openbeos] ZipOMatic beta 1 20030725181552 Jonas Sundstrom/MAIL:rati\
o_spam
PrimitiveType=FLOT
PosixSize=4
Data=\0\0\0\000
}
{ Create Thing
PosixEquivalentThing=Attribute
Path=in/[openbeos] ZipOMatic beta 1 20030725181552 Jonas Sundstrom/MAIL:subj\
ect
PrimitiveType=CSTR
PosixSize=32
Data=[openbeos] Re: ZipOMatic beta 1\000
}
[...]
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