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|ID||Category||Severity||Reproducibility||Date Submitted||Last Update|
|0001641||[Squeak] System||minor||always||08-10-05 20:59||02-24-06 21:18|
|Summary||0001641: [ENH] Zip Serial Reading (was Re: [NIT] Managing repositories in MC)|
On Sunday 21 September 2003 03:08 pm, Avi Bryant wrote:
> On Sun, 21 Sep 2003, Ned Konz wrote:
> > If you store the version info as the first member of the zip
> > (either compressed or not) you can just grab the first packet's
> > worth of bytes (1K or so). You will get the member header
> > preceding it, which you can examine to make sure you have all the
> > bytes.
> Thanks, Ned. I seem to be able to get the first member from a zip
> file by doing this:
> n := 'Foo.mcz'.
> f := FileStream readOnlyFileNamed: n.
> f binary.
> z := ZipArchiveMember newFromZipFile: f named: n.
> z readLocalDirectoryFileHeaderFrom: f.
> z contents.
> Unfortunately, the very first member of a .mcz file is the package
> name, not the ancestry info.
So why not store the version first?
> Is there anything about the zip format that would prevent an
> interface like the code below, without needing the central
> z := ZipArchiveStream on: aStream.
> aMember = z nextMember.
> anotherMember = z nextMember.
No, that should work, assuming that the zip was stored correctly. All
the data is there in the headers, which precede the members
Enclosed is a CS that will add serial reading support (header by
header) to the existing ZipArchive stuff.
It hasn't been tested, and I couldn't find any support for the HTTP
byte-ranges in the image.
|Attached Files||ZipSerialReading-nk.1.cs.gz [^] (1,385 bytes) 08-10-05 21:05|
(0002233 - 675 - 841 - 876 - 876 - 876 - 876)
Avi Bryant <email@example.com>:
"> > Unfortunately, the very first member of a .mcz file is the package
> > name, not the ancestry info.
> So why not store the version first?
Because there are already a bunch of .mcz files out there in the current
> Enclosed is a CS that will add serial reading support (header by
> header) to the existing ZipArchive stuff.
Very cool, thanks.
> It hasn't been tested, and I couldn't find any support for the HTTP
> byte-ranges in the image.
No, I wouldn't have expected there to be. HTTP client support is
currently minimal, to say the least. That's something I've been meaning
to work on for a long time."
(0002234 - 399 - 481 - 481 - 481 - 481 - 481)
"Checking ZipSerialReading-nk.1.cs (#5420) for method conflicts with
changesets after 5420advanceToGammaOr37-dew ...
CONFLICT found for ZipFileMember
class>>readLocalDirectoryFileHeaderFrom: with newer changesets
1 conflict found."
(0002235 - 77 - 77 - 77 - 77 - 77 - 77)
|I loaded this into 3.8-6665-basic without errors but did not test it further.|
(0004058 - 78 - 81 - 81 - 81 - 81 - 81)
|rejected. Conflicts indicated, author did not react --> not important. closed.|
|08-10-05 20:59||KenCausey||New Issue|
|08-10-05 21:00||KenCausey||Reporter||KenCausey => ned|
|08-10-05 21:02||KenCausey||Note Added: 0002233|
|08-10-05 21:03||KenCausey||Additional Information Updated|
|08-10-05 21:05||KenCausey||File Added: ZipSerialReading-nk.1.cs.gz|
|08-10-05 21:06||KenCausey||Note Added: 0002234|
|08-10-05 21:07||KenCausey||Note Added: 0002235|
|02-24-06 21:18||MarcusDenker||Status||new => closed|
|02-24-06 21:18||MarcusDenker||Note Added: 0004058|
|02-24-06 21:18||MarcusDenker||Resolution||open => fixed|
|02-24-06 21:18||MarcusDenker||Fixed in Version||=> 3.9|
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