git/git-cherry
Junio C Hamano 93c36dcd0a [PATCH] git-cherry: find commits not merged upstream.
The git-cherry command helps the git-rebase script by finding
commits that have not been merged upstream.  Commits already
included in upstream are prefixed with '-' (meaning "drop from
my local pull"), while commits missing from upstream are
prefixed with '+' (meaning "add to the updated upstream").

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 16:52:16 -07:00

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#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano.
#
usage="usage: $0 "'<upstream> [<head>]
__*__*__*__*__> <upstream>
/
fork-point
\__+__+__+__+__+__+__+__> <head>
Each commit between the fork-point and <head> is examined, and
compared against the change each commit between the fork-point and
<upstream> introduces. If the change does not seem to be in the
upstream, it is shown on the standard output.
The output is intended to be used as:
OLD_HEAD=$(git-rev-parse HEAD)
git-rev-parse linus >${GIT_DIR-.}/HEAD
git-cherry linus OLD_HEAD |
while read commit
do
GIT_EXTERNAL_DIFF=git-apply-patch-script git-diff-tree -p "$commit" &&
git-commit-script -m "$commit"
done
'
case "$#" in
1) linus=`git-rev-parse "$1"` &&
junio=`git-rev-parse HEAD` || exit
;;
2) linus=`git-rev-parse "$1"` &&
junio=`git-rev-parse "$2"` || exit
;;
*) echo >&2 "$usage"; exit 1 ;;
esac
# Note that these list commits in reverse order;
# not that the order in inup matters...
inup=`git-rev-list ^$junio $linus` &&
ours=`git-rev-list $junio ^$linus` || exit
tmp=.cherry-tmp$$
patch=$tmp-patch
mkdir $patch
trap "rm -rf $tmp-*" 0 1 2 3 15
_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
for c in $inup
do
git-diff-tree -p $c
done | git-patch-id |
while read id name
do
echo $name >>$patch/$id
done
LF='
'
O=
for c in $ours
do
set x `git-diff-tree -p $c | git-patch-id`
if test "$2" != ""
then
if test -f "$patch/$2"
then
sign=-
else
sign=+
fi
case "$O" in
'') O="$sign $c" ;;
*) O="$sign $c$LF$O" ;;
esac
fi
done
case "$O" in
'') ;;
*) echo "$O" ;;
esac