Search through tar files for a pattern and print the full path of what's found

Question

I have directory tree with many tar files. Each tar file contains many other files. I want to search through all the tar files for a given pattern, and print the full path of any files within a tar that are found.

I got this far: find . -type f -name '*.tar' -exec tar tf {} \; | egrep '<pattern>'

Now my problem is that the above command only prints the name of the file within the tar that it finds. Ie, the output of the above is:
pattern.jpg foundMe.txt

I would like the output to contain also the full path and the tar name where the file was found. How would I do this?

Thank you!

Answer 1

Of course, lost the plot somewhere along the line :$

I had a similar problem with jar files, looking for java classes. Used to do something like this: capture the output of each tar tf|grep <pattern> then look see if the output contains a value - if so, print name ($f) and value ($p):

find . -name '*.tar' -type f|while read f; do p="$(tar tf $f|egrep <pattern>)"; [ -n "$p" ] && echo -e "$f\n$p" ; p=""; done

Switched the order of find arguments - cheaper to look at file name before file type.