unix shell, getting exit code with piped child

Question

Let's say I do this in a unix shell

$ some-script.sh | grep mytext

$ echo $?

this will give me the exit code of grep

but how can I get the exit code of some-script.sh

EDIT

Assume that the pipe operation is immutable. ie, I can not break it apart and run the two commands seperately

Answer 1

There are multiple solutions, it depends on what you want to do exactly.

The easiest and understandable way would be to send the output to a file, then grep for it after saving the exit code:

tmpfile=$(mktemp)
./some-script.sh > $tmpfile
retval=$?
grep mytext $tmpfile
rm tmpfile

Answer 2

If you're using bash:

PIPESTATUS
    An array variable (see Arrays) containing a list of exit status values from the processes in the most-recently-executed foreground pipeline (which may contain only a single command).