Reading .jar files

Ruby
1

How can I read the entries in a Java .jar file from Ruby?

I tried the standard library Zlib, but that doesn’t work … I think
because .jar files use the zip format instead of the gzip format.

I tried the rubyzip library at http://rubyzip.sourceforge.net/. For
some reason that didn’t get to all the entries in the file, only
“META-INF/” and “META-INF/MANIFEST.MF”.

2

Mark V. wrote:

How can I read the entries in a Java .jar file from Ruby?

I tried the standard library Zlib, but that doesn’t work … I think
because .jar files use the zip format instead of the gzip format.

I tried the rubyzip library at http://rubyzip.sourceforge.net/. For some
reason that didn’t get to all the entries in the file, only “META-INF/”
and “META-INF/MANIFEST.MF”.

rubyzip should be able to read the jar file. Can you send me a .jar file
that is causing you problems.

Best regards,

Thomas Sondergaard

3

On 12/28/06, Mark V. [email protected] wrote:

How can I read the entries in a Java .jar file from Ruby?

I tried the standard library Zlib, but that doesn’t work … I think
because .jar files use the zip format instead of the gzip format.

I tried the rubyzip library at http://rubyzip.sourceforge.net/. For
some reason that didn’t get to all the entries in the file, only
“META-INF/” and “META-INF/MANIFEST.MF”.

Perhaps you should simply call the jar program, or unzip, instead of
trying to read the file directly.

Mike