I have a zip file of multiple zipfiles each containing files, folders, and other zip files. I need to tunnel into the individual files buried in all subarchives and folders in order to edit/insert/remove information. Ultimately I'd like to do the work directly inside the zip file without having to decompressing and recompressing the files. Request a demonstration of how to accomplish this.

Any assistance, tango or phobos, is greatly appreciated.

Andrew

Zip files are pretty easy to work with.  You can find the spec on a site like wotsit.org.

Decompressing/recompressing is most likely necessary (although it can be done in memory.)  Obviously writing to a temporary directory is non-ideal.  Most likely you would read the central directory out of the archive, cache changes to that and new files, and then write out a new zip file from that.

Working with it in-memory is also possible but would cost more for big archives.

-[Unknown]


Tyro[a.c.edwards] wrote:
> I have a zip file of multiple zipfiles each containing files, folders, and other zip files. I need to tunnel into the individual files buried in all subarchives and folders in order to edit/insert/remove information. Ultimately I'd like to do the work directly inside the zip file without having to decompressing and recompressing the files. Request a demonstration of how to accomplish this.
> 
> Any assistance, tango or phobos, is greatly appreciated.
> 
> Andrew

== Quote from Tyro[a.c.edwards] (no@spam.com)'s article
> I have a zip file of multiple zipfiles each containing files, folders, and other zip files. I need to tunnel into the individual files buried in all subarchives and folders in order to edit/insert/remove information. Ultimately I'd like to do the work directly inside the zip file without having to decompressing and recompressing the files. Request a demonstration of how to accomplish this.
>
> Any assistance, tango or phobos, is greatly appreciated.
>
> Andrew

Did you look in the Tutorials project? http://www.dsource.org/projects/tutorials/wiki/StandardLibraryCategory

There are some Phobos examples (D 1.x or earlier):
 * http://www.dsource.org/projects/tutorials/wiki/ZipExample
 * http://www.dsource.org/projects/tutorials/wiki/ZlibExample
 * http://www.dsource.org/projects/tutorials/wiki/UnzipUsingStdZipExample

(They're old examples, but I think they should work with D 1.x. If they don't quite work with D 1.x, please either add a note to the wiki that they don't work with D 1.x or change the example if you know what to fix.)

I hope that helps.

I might be able to scare up a couple more examples from my code (I remember creating a program that output some simple .odt files, which are actually .zip files), but it's zip isn't something I've spent a lot of time with.

"Tyro[a.c.edwards]" wrote
>I have a zip file of multiple zipfiles each containing files, folders, and other zip files. I need to tunnel into the individual files buried in all subarchives and folders in order to edit/insert/remove information. Ultimately I'd like to do the work directly inside the zip file without having to decompressing and recompressing the files. Request a demonstration of how to accomplish this.
>
> Any assistance, tango or phobos, is greatly appreciated.

At least for tango, there is zip support in the VFS (virtual file system):

http://www.dsource.org/projects/tango/docs/current/tango.io.vfs.ZipFolder.html

here is some more info (not complete yet) on VFS:

http://www.dsource.org/projects/tango/wiki/ChapterVFS

-Steve

Steven Schveighoffer Wrote:


I went to that site amd I would like to read your page but Its pump up terminoligy is confusing. I always like to see a simple introduction come first in case the reader does not have your level of expertise .

In your pages' case something like this to start (if it is right)

Tango can create a virtual file system which will combine the chosen true file systems of your source in a way chosen by you. This can then be used more easily as one cohesive file system The files can be from your hard drive , zip files , ftp or WebDAV systems

Remember the poor old dummies like me- now I'll go back and see if I can make sence of a bit more of it .