git/git-applymbox.sh

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#!/bin/sh
##
## "dotest" is my stupid name for my patch-application script, which
## I never got around to renaming after I tested it. We're now on the
## second generation of scripts, still called "dotest".
##
## Update: Ryan Anderson finally shamed me into naming this "applymbox".
##
## You give it a mbox-format collection of emails, and it will try to
## apply them to the kernel using "applypatch"
##
## The patch application may fail in the middle. In which case:
## (1) look at .dotest/patch and fix it up to apply
## (2) re-run applymbox with -c .dotest/msg-number for the current one.
## Pay a special attention to the commit log message if you do this and
## use a Signoff_file, because applypatch wants to append the sign-off
## message to msg-clean every time it is run.
##
## git-am is supposed to be the newer and better tool for this job.
. git-sh-setup
usage () {
echo >&2 "applymbox [-u] [-k] [-q] [-m] (-c .dotest/<num> | mbox) [signoff]"
exit 1
}
keep_subject= query_apply= continue= utf8= resume=t
while case "$#" in 0) break ;; esac
do
case "$1" in
-u) utf8=-u ;;
-k) keep_subject=-k ;;
-q) query_apply=t ;;
-c) continue="$2"; resume=f; shift ;;
-m) fall_back_3way=t ;;
-*) usage ;;
*) break ;;
esac
shift
done
case "$continue" in
'')
rm -rf .dotest
mkdir .dotest
num_msgs=$(git-mailsplit "$1" .dotest) || exit 1
echo "$num_msgs patch(es) to process."
shift
esac
files=$(git-diff-index --cached --name-only HEAD) || exit
if [ "$files" ]; then
echo "Dirty index: cannot apply patches (dirty: $files)" >&2
exit 1
fi
case "$query_apply" in
t) touch .dotest/.query_apply
esac
case "$fall_back_3way" in
t) : >.dotest/.3way
esac
case "$keep_subject" in
-k) : >.dotest/.keep_subject
esac
signoff="$1"
set x .dotest/0*
shift
while case "$#" in 0) break;; esac
do
i="$1"
case "$resume,$continue" in
f,$i) resume=t;;
f,*) shift
continue;;
*)
git-mailinfo $keep_subject $utf8 \
.dotest/msg .dotest/patch <$i >.dotest/info || exit 1
git-stripspace < .dotest/msg > .dotest/msg-clean
;;
esac
while :; # for fixing up and retry
do
git-applypatch .dotest/msg-clean .dotest/patch .dotest/info "$signoff"
case "$?" in
0)
# Remove the cleanly applied one to reduce clutter.
rm -f .dotest/$i
;;
2)
# 2 is a special exit code from applypatch to indicate that
# the patch wasn't applied, but continue anyway
;;
*)
ret=$?
if test -f .dotest/.query_apply
then
echo >&2 "* Patch failed."
echo >&2 "* You could fix it up in your editor and"
echo >&2 " retry. If you want to do so, say yes here"
echo >&2 " AFTER fixing .dotest/patch up."
echo >&2 -n "Retry [y/N]? "
read yesno
case "$yesno" in
[Yy]*)
continue ;;
esac
fi
exit $ret
esac
break
done
shift
done
# return to pristine
rm -fr .dotest