[openbeos] Re: ZipOMatic beta 1 & Packed Archived File System files

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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