#!/bin/sh
#
-merge_repo=$1
-merge_name=${2:-HEAD}
+. git-sh-setup-script || die "Not a git archive"
+. git-parse-remote-script
+_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"
-: ${GIT_DIR=.git}
-: ${GIT_OBJECT_DIRECTORY="${SHA1_FILE_DIRECTORY-"$GIT_DIR/objects"}"}
-
-download_one () {
- # remote_path="$1" local_file="$2"
+append=
+force=
+update_head_ok=
+while case "$#" in 0) break ;; esac
+do
case "$1" in
- http://*)
- wget -q -O "$2" "$1" ;;
- /*)
- test -f "$1" && cat >"$2" "$1" ;;
+ -a|--a|--ap|--app|--appe|--appen|--append)
+ append=t
+ ;;
+ -f|--f|--fo|--for|--forc|--force)
+ force=t
+ ;;
+ -u|--u|--up|--upd|--upda|--updat|--update|--update-|--update-h|\
+ --update-he|--update-hea|--update-head|--update-head-|\
+ --update-head-o|--update-head-ok)
+ update_head_ok=t
+ ;;
*)
- rsync -L "$1" "$2" ;;
+ break
+ ;;
esac
+ shift
+done
+
+case "$#" in
+0)
+ test -f "$GIT_DIR/branches/origin" ||
+ test -f "$GIT_DIR/remotes/origin" ||
+ die "Where do you want to fetch from today?"
+ set origin ;;
+esac
+
+remote_nick="$1"
+remote=$(get_remote_url "$@")
+refs=
+rref=
+rsync_slurped_objects=
+
+if test "" = "$append"
+then
+ : >$GIT_DIR/FETCH_HEAD
+fi
+
+append_fetch_head () {
+ head_="$1"
+ remote_="$2"
+ remote_name_="$3"
+ remote_nick_="$4"
+ local_name_="$5"
+
+ # 2.6.11-tree tag would not be happy to be fed to resolve.
+ if git-cat-file commit "$head_" >/dev/null 2>&1
+ then
+ headc_=$(git-rev-parse --verify "$head_^0") || exit
+ note_="$headc_ $remote_name_ from $remote_nick_"
+ echo "$note_" >>$GIT_DIR/FETCH_HEAD
+ echo >&2 "* committish: $note_"
+ else
+ echo >&2 "* non-commit: $note_"
+ fi
+ if test "$local_name_" != ""
+ then
+ # We are storing the head locally. Make sure that it is
+ # a fast forward (aka "reverse push").
+ fast_forward_local "$local_name_" "$head_" "$remote_" "$remote_name_"
+ fi
}
-download_objects () {
- # remote_repo="$1" head_sha1="$2"
- case "$1" in
- http://*)
- git-http-pull -a "$2" "$1/"
+fast_forward_local () {
+ case "$1" in
+ refs/tags/*)
+ # Tags need not be pointing at commits so there
+ # is no way to guarantee "fast-forward" anyway.
+ if test -f "$GIT_DIR/$1"
+ then
+ echo >&2 "* $1: updating with $4"
+ echo >&2 " from $3."
+ else
+ echo >&2 "* $1: storing $4"
+ echo >&2 " from $3."
+ fi
+ echo "$2" >"$GIT_DIR/$1" ;;
+
+ refs/heads/*)
+ # NEEDSWORK: use the same cmpxchg protocol here.
+ echo "$2" >"$GIT_DIR/$1.lock"
+ if test -f "$GIT_DIR/$1"
+ then
+ local=$(git-rev-parse --verify "$1^0") &&
+ mb=$(git-merge-base "$local" "$2") &&
+ case "$2,$mb" in
+ $local,*)
+ echo >&2 "* $1: same as $4"
+ echo >&2 " from $3"
;;
- /*)
- git-local-pull -l -a "$2" "$1/"
+ *,$local)
+ echo >&2 "* $1: fast forward to $4"
+ echo >&2 " from $3"
;;
- *)
- rsync -avz --ignore-existing \
- "$1/objects/." "$GIT_OBJECT_DIRECTORY"/.
+ *)
+ false
;;
- esac
+ esac || {
+ echo >&2 "* $1: does not fast forward to $4"
+ case "$force,$single_force" in
+ t,* | *,t)
+ echo >&2 " from $3; forcing update."
+ ;;
+ *)
+ mv "$GIT_DIR/$1.lock" "$GIT_DIR/$1.remote"
+ echo >&2 " from $3; leaving it in '$1.remote'"
+ ;;
+ esac
+ }
+ else
+ echo >&2 "* $1: storing $4"
+ echo >&2 " from $3."
+ fi
+ test -f "$GIT_DIR/$1.lock" &&
+ mv "$GIT_DIR/$1.lock" "$GIT_DIR/$1"
+ ;;
+ esac
}
-echo "Getting remote $merge_name"
-download_one "$merge_repo/$merge_name" "$GIT_DIR"/FETCH_HEAD || exit 1
+case "$update_head_ok" in
+'')
+ orig_head=$(cat "$GIT_DIR/HEAD" 2>/dev/null)
+ ;;
+esac
+
+for ref in $(get_remote_refs_for_fetch "$@")
+do
+ refs="$refs $ref"
+
+ # These are relative path from $GIT_DIR, typically starting at refs/
+ # but may be HEAD
+ if expr "$ref" : '\+' >/dev/null
+ then
+ single_force=t
+ ref=$(expr "$ref" : '\+\(.*\)')
+ else
+ single_force=
+ fi
+ remote_name=$(expr "$ref" : '\([^:]*\):')
+ local_name=$(expr "$ref" : '[^:]*:\(.*\)')
+
+ rref="$rref $remote_name"
+
+ # There are transports that can fetch only one head at a time...
+ case "$remote" in
+ http://* | https://*)
+ if [ -n "$GIT_SSL_NO_VERIFY" ]; then
+ curl_extra_args="-k"
+ fi
+ head=$(curl -nsf $curl_extra_args "$remote/$remote_name") &&
+ expr "$head" : "$_x40\$" >/dev/null ||
+ die "Failed to fetch $remote_name from $remote"
+ echo Fetching "$remote_name from $remote" using http
+ git-http-pull -v -a "$head" "$remote/" || exit
+ ;;
+ rsync://*)
+ TMP_HEAD="$GIT_DIR/TMP_HEAD"
+ rsync -L "$remote/$remote_name" "$TMP_HEAD" || exit 1
+ head=$(git-rev-parse TMP_HEAD)
+ rm -f "$TMP_HEAD"
+ test "$rsync_slurped_objects" || {
+ rsync -avz --ignore-existing "$remote/objects/" \
+ "$GIT_OBJECT_DIRECTORY/" || exit
+ rsync_slurped_objects=t
+ }
+ ;;
+ *)
+ # We will do git native transport with just one call later.
+ continue ;;
+ esac
+
+ append_fetch_head "$head" "$remote" "$remote_name" "$remote_nick" "$local_name"
+
+done
+
+case "$remote" in
+http://* | https://* | rsync://* )
+ ;; # we are already done.
+*)
+ git-fetch-pack "$remote" $rref |
+ while read sha1 remote_name
+ do
+ found=
+ single_force=
+ for ref in $refs
+ do
+ case "$ref" in
+ +$remote_name:*)
+ single_force=t
+ found="$ref"
+ break ;;
+ $remote_name:*)
+ found="$ref"
+ break ;;
+ esac
+ done
+
+ local_name=$(expr "$found" : '[^:]*:\(.*\)')
+ append_fetch_head "$sha1" "$remote" "$remote_name" "$remote_nick" "$local_name"
+ done
+ ;;
+esac
-echo "Getting object database"
-download_objects "$merge_repo" "$(cat "$GIT_DIR"/FETCH_HEAD)" || exit 1
+# If the original head was empty (i.e. no "master" yet), or
+# if we were told not to worry, we do not have to check.
+case ",$update_head_ok,$orig_head," in
+*,, | t,* )
+ ;;
+*)
+ curr_head=$(cat "$GIT_DIR/HEAD" 2>/dev/null)
+ if test "$curr_head" != "$orig_head"
+ then
+ echo "$orig_head" >$GIT_DIR/HEAD
+ die "Cannot fetch into the current branch."
+ fi
+ ;;
+esac
projects / git.git / blobdiff