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git-am: use apply --cached

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Now 'git apply' can apply patch without working tree, preparation
of pristine preimage and postimage trees that are done when falling
back on 3-way merge by "git am" can do so without temporary files.

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano 2006-05-15 17:25:43 -07:00
parent 04e4888e5a
commit b7627278e2
1 changed files with 2 additions and 36 deletions
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38
git-am.sh
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@ -55,46 +55,12 @@ fall_back_3way () {
GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
git-write-tree >"$dotest/patch-merge-base+" &&
# index has the base tree now.
(
cd "$dotest/patch-merge-tmp-dir" &&
GIT_INDEX_FILE="../patch-merge-tmp-index" \
GIT_OBJECT_DIRECTORY="$O_OBJECT" \
git-apply $binary --index <../patch
)
GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
git-apply $binary --cached <"$dotest/patch"
then
echo Using index info to reconstruct a base tree...
mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
else
# Otherwise, try nearby trees that can be used to apply the
# patch.
(
N=10
# Hoping the patch is against our recent commits...
git-rev-list --max-count=$N HEAD
# or hoping the patch is against known tags...
git-ls-remote --tags .
) |
while read base junk
do
# See if we have it as a tree...
git-cat-file tree "$base" >/dev/null 2>&1 || continue
rm -fr "$dotest"/patch-merge-* &&
mkdir "$dotest/patch-merge-tmp-dir" || break
(
cd "$dotest/patch-merge-tmp-dir" &&
GIT_INDEX_FILE=../patch-merge-tmp-index &&
GIT_OBJECT_DIRECTORY="$O_OBJECT" &&
export GIT_INDEX_FILE GIT_OBJECT_DIRECTORY &&
git-read-tree "$base" &&
git-apply $binary --index &&
mv ../patch-merge-tmp-index ../patch-merge-index &&
echo "$base" >../patch-merge-base
) <"$dotest/patch" 2>/dev/null && break
done
fi
test -f "$dotest/patch-merge-index" &&