## $3 - "info" file with Author, email and subject
## $4 - optional file containing signoff to add
##
-. git-sh-setup || die "Not a git archive."
+
+USAGE='<msg> <patch> <info> [<signoff>]'
+. git-sh-setup
+
+case "$#" in 3|4) ;; *) usage ;; esac
final=.dotest/final-commit
##
## if this file exists.
keep_subject=.dotest/.keep_subject
+## We do not attempt the 3-way merge fallback unless this file exists.
+fall_back_3way=.dotest/.3way
MSGFILE=$1
PATCHFILE=$2
echo "--------------------------"
cat "$final"
echo "--------------------------"
- echo -n "Apply? [y]es/[n]o/[e]dit/[a]ccept all "
+ printf "Apply? [y]es/[n]o/[e]dit/[a]ccept all "
read reply
case "$reply" in
y|Y) interactive=no;;
echo
git-apply --index "$PATCHFILE" || {
+
+ # git-apply exits with status 1 when the patch does not apply,
+ # but it die()s with other failures, most notably upon corrupt
+ # patch. In the latter case, there is no point to try applying
+ # it to another tree and do 3-way merge.
+ test $? = 1 || exit 1
+
+ test -f "$fall_back_3way" || exit 1
+
# Here if we know which revision the patch applies to,
# we create a temporary working tree and index, apply the
# patch, and attempt 3-way merge with the resulting tree.
- exit 1
+
+ O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
+ rm -fr .patch-merge-*
+
+ if git-apply -z --index-info "$PATCHFILE" \
+ >.patch-merge-index-info 2>/dev/null &&
+ GIT_INDEX_FILE=.patch-merge-tmp-index \
+ git-update-index -z --index-info <.patch-merge-index-info &&
+ GIT_INDEX_FILE=.patch-merge-tmp-index \
+ git-write-tree >.patch-merge-tmp-base &&
+ (
+ mkdir .patch-merge-tmp-dir &&
+ cd .patch-merge-tmp-dir &&
+ GIT_INDEX_FILE="../.patch-merge-tmp-index" \
+ GIT_OBJECT_DIRECTORY="$O_OBJECT" \
+ git-apply $binary --index
+ ) <"$PATCHFILE"
+ then
+ echo Using index info to reconstruct a base tree...
+ mv .patch-merge-tmp-base .patch-merge-base
+ mv .patch-merge-tmp-index .patch-merge-index
+ else
+ (
+ N=10
+
+ # Otherwise, try nearby trees that can be used to apply the
+ # patch.
+ git-rev-list --max-count=$N HEAD
+
+ # or hoping the patch is against known tags...
+ git-ls-remote --tags .
+ ) |
+ while read base junk
+ do
+ # Try it if we have it as a tree.
+ git-cat-file tree "$base" >/dev/null 2>&1 || continue
+
+ rm -fr .patch-merge-tmp-* &&
+ mkdir .patch-merge-tmp-dir || break
+ (
+ cd .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 --index &&
+ mv ../.patch-merge-tmp-index ../.patch-merge-index &&
+ echo "$base" >../.patch-merge-base
+ ) <"$PATCHFILE" 2>/dev/null && break
+ done
+ fi
+
+ test -f .patch-merge-index &&
+ his_tree=$(GIT_INDEX_FILE=.patch-merge-index git-write-tree) &&
+ orig_tree=$(cat .patch-merge-base) &&
+ rm -fr .patch-merge-* || exit 1
+
+ echo Falling back to patching base and 3-way merge using $orig_tree...
+
+ # This is not so wrong. Depending on which base we picked,
+ # orig_tree may be wildly different from ours, but his_tree
+ # has the same set of wildly different changes in parts the
+ # patch did not touch, so resolve ends up cancelling them,
+ # saying that we reverted all those changes.
+
+ if git-merge-resolve $orig_tree -- HEAD $his_tree
+ then
+ echo Done.
+ else
+ echo Failed to merge in the changes.
+ exit 1
+ fi
}
if test -x "$GIT_DIR"/hooks/pre-applypatch