#!/bin/sh
##
## applypatch takes four file arguments, and uses those to
## apply the unpacked patch (surprise surprise) that they
## represent to the current tree.
##
## The arguments are:
##	$1 - file with commit message
##	$2 - file with the actual patch
##	$3 - file with list of filenames the patch touches
##	$4 - "info" file with Author, email and subject
##
MSGFILE=$1
PATCHFILE=$2
FILES=$3
INFO=$4
export AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' .dotest/info)"
export AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' .dotest/info)"
export SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' .dotest/info)"

echo
echo Applying $SUBJECT
echo

(echo "[PATCH] $SUBJECT" ; echo ; cat $MSGFILE ) > .dotest/final-commit

check-files $(cat $FILES) || exit 1
patch -u --no-backup-if-mismatch -f -p1 --fuzz=0 --input=$PATCHFILE || exit 1
update-cache --add --remove $(cat $FILES) || exit 1
tree=$(write-tree) || exit 1
echo Wrote tree $tree
commit=$(commit-tree $tree -p $(cat .git/HEAD) < .dotest/final-commit) || exit 1
echo Committed: $commit
echo $commit > .git/HEAD