#!/bin/sh
#
-merge_repo=$1
-merge_name=${2:-HEAD}
-
-: ${GIT_DIR=.git}
-: ${GIT_OBJECT_DIRECTORY="${SHA1_FILE_DIRECTORY-"$GIT_DIR/objects"}"}
-
-download_one () {
- # remote_path="$1" local_file="$2"
- case "$1" in
- http://*)
- wget -q -O "$2" "$1" ;;
- /*)
- test -f "$1" && cat >"$2" "$1" ;;
- *)
- rsync -L "$1" "$2" ;;
- esac
-}
-
-download_objects () {
- # remote_repo="$1" head_sha1="$2"
- case "$1" in
- http://*)
- git-http-pull -a "$2" "$1/"
- ;;
- /*)
- git-local-pull -l -a "$2" "$1/"
- ;;
- *)
- rsync -avz --ignore-existing \
- "$1/objects/." "$GIT_OBJECT_DIRECTORY"/.
- ;;
- esac
-}
-
-echo "Getting remote $merge_name"
-download_one "$merge_repo/$merge_name" "$GIT_DIR"/MERGE_HEAD
-
-echo "Getting object database"
-download_objects "$merge_repo" "$(cat "$GIT_DIR"/MERGE_HEAD)"
+# Copyright (c) 2005 Junio C Hamano
+#
+# Fetch one or more remote refs and merge it/them into the current HEAD.
+
+. git-sh-setup-script || die "Not a git archive"
+
+orig_head=$(cat "$GIT_DIR/HEAD") || die "Pulling into a black hole?"
+git-fetch-script --update-head-ok "$@" || exit 1
+
+curr_head=$(cat "$GIT_DIR/HEAD")
+if test "$curr_head" != "$orig_head"
+then
+ # The fetch involved updating the current branch.
+
+ # The working tree and the index file is still based on the
+ # $orig_head commit, but we are merging into $curr_head.
+ # First update the working tree to match $curr_head.
+
+ echo >&2 "Warning: fetch updated the current branch head."
+ echo >&2 "Warning: fast forwarding your working tree."
+ git-read-tree -u -m "$orig_head" "$curr_head" ||
+ die "You need to first update your working tree."
+fi
+
+merge_head=$(sed -e 's/ .*//' "$GIT_DIR"/FETCH_HEAD | tr '\012' ' ')
+merge_name=$(sed -e 's/^[0-9a-f]* //' "$GIT_DIR"/FETCH_HEAD |
+ tr '\012' ' ')
+
+case "$merge_head" in
+'')
+ echo >&2 "No changes."
+ exit 0
+ ;;
+*' '?*)
+ echo >&2 "Pulling more than one heads; making an Octopus."
+ exec git-octopus-script
+ ;;
+esac
git-resolve-script \
"$(cat "$GIT_DIR"/HEAD)" \
- "$(cat "$GIT_DIR"/MERGE_HEAD)" \
- "$merge_repo"
+ $merge_head "Merge $merge_name"