mirror of
https://github.com/git/git.git
synced 2024-11-18 04:04:11 +01:00
63f1aa6c72
Linus says that 'of .' to mean the commits came from the local repository was too confusing and ugly -- I tend to agree with him. Signed-off-by: Junio C Hamano <junkio@cox.net>
276 lines
6.2 KiB
Bash
Executable File
276 lines
6.2 KiB
Bash
Executable File
#!/bin/sh
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#
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. git-sh-setup || die "Not a git archive"
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. git-parse-remote
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_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
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_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
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append=
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force=
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update_head_ok=
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while case "$#" in 0) break ;; esac
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do
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case "$1" in
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-a|--a|--ap|--app|--appe|--appen|--append)
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append=t
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;;
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-f|--f|--fo|--for|--forc|--force)
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force=t
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;;
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-u|--u|--up|--upd|--upda|--updat|--update|--update-|--update-h|\
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--update-he|--update-hea|--update-head|--update-head-|\
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--update-head-o|--update-head-ok)
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update_head_ok=t
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;;
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*)
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break
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;;
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esac
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shift
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done
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case "$#" in
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0)
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test -f "$GIT_DIR/branches/origin" ||
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test -f "$GIT_DIR/remotes/origin" ||
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die "Where do you want to fetch from today?"
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set origin ;;
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esac
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remote_nick="$1"
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remote=$(get_remote_url "$@")
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refs=
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rref=
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rsync_slurped_objects=
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if test "" = "$append"
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then
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: >$GIT_DIR/FETCH_HEAD
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fi
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append_fetch_head () {
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head_="$1"
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remote_="$2"
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remote_name_="$3"
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remote_nick_="$4"
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local_name_="$5"
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# remote-nick is the URL given on the command line (or a shorthand)
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# remote-name is the $GIT_DIR relative refs/ path we computed
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# for this refspec.
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remote_1_=$(expr "$remote_" : '\(.*\)\.git/*$') &&
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remote_="$remote_1_"
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case "$remote_" in
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. | ./) where_= ;;
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*) where_=" of $remote_" ;;
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esac
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case "$remote_name_" in
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HEAD)
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note_= ;;
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refs/heads/*)
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note_="$(expr "$remote_name_" : 'refs/heads/\(.*\)')"
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note_="branch '$note_'" ;;
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refs/tags/*)
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note_="$(expr "$remote_name_" : 'refs/tags/\(.*\)')"
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note_="tag '$note_'" ;;
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*)
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note_="$remote_name" ;;
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esac
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note_="$note_$where_"
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# 2.6.11-tree tag would not be happy to be fed to resolve.
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if git-cat-file commit "$head_" >/dev/null 2>&1
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then
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headc_=$(git-rev-parse --verify "$head_^0") || exit
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echo "$headc_ $note_" >>$GIT_DIR/FETCH_HEAD
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echo >&2 "* committish: $head_"
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echo >&2 " $note_"
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else
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echo >&2 "* non-commit: $head_"
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echo >&2 " $note_"
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fi
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if test "$local_name_" != ""
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then
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# We are storing the head locally. Make sure that it is
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# a fast forward (aka "reverse push").
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fast_forward_local "$local_name_" "$head_" "$note_"
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fi
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}
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fast_forward_local () {
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mkdir -p "$(dirname "$GIT_DIR/$1")"
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case "$1" in
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refs/tags/*)
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# Tags need not be pointing at commits so there
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# is no way to guarantee "fast-forward" anyway.
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if test -f "$GIT_DIR/$1"
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then
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echo >&2 "* $1: updating with $3"
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else
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echo >&2 "* $1: storing $3"
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fi
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echo "$2" >"$GIT_DIR/$1" ;;
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refs/heads/*)
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# NEEDSWORK: use the same cmpxchg protocol here.
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echo "$2" >"$GIT_DIR/$1.lock"
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if test -f "$GIT_DIR/$1"
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then
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local=$(git-rev-parse --verify "$1^0") &&
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mb=$(git-merge-base "$local" "$2") &&
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case "$2,$mb" in
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$local,*)
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echo >&2 "* $1: same as $3"
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;;
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*,$local)
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echo >&2 "* $1: fast forward to $3"
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;;
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*)
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false
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;;
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esac || {
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echo >&2 "* $1: does not fast forward to $3;"
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case "$force,$single_force" in
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t,* | *,t)
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echo >&2 " forcing update."
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;;
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*)
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mv "$GIT_DIR/$1.lock" "$GIT_DIR/$1.remote"
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echo >&2 " leaving it in '$1.remote'"
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;;
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esac
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}
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else
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echo >&2 "* $1: storing $3"
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fi
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test -f "$GIT_DIR/$1.lock" &&
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mv "$GIT_DIR/$1.lock" "$GIT_DIR/$1"
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;;
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esac
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}
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case "$update_head_ok" in
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'')
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orig_head=$(cat "$GIT_DIR/HEAD" 2>/dev/null)
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;;
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esac
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for ref in $(get_remote_refs_for_fetch "$@")
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do
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refs="$refs $ref"
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# These are relative path from $GIT_DIR, typically starting at refs/
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# but may be HEAD
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if expr "$ref" : '\+' >/dev/null
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then
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single_force=t
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ref=$(expr "$ref" : '\+\(.*\)')
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else
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single_force=
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fi
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remote_name=$(expr "$ref" : '\([^:]*\):')
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local_name=$(expr "$ref" : '[^:]*:\(.*\)')
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rref="$rref $remote_name"
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# There are transports that can fetch only one head at a time...
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case "$remote" in
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http://* | https://*)
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if [ -n "$GIT_SSL_NO_VERIFY" ]; then
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curl_extra_args="-k"
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fi
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head=$(curl -nsf $curl_extra_args "$remote/$remote_name") &&
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expr "$head" : "$_x40\$" >/dev/null ||
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die "Failed to fetch $remote_name from $remote"
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echo Fetching "$remote_name from $remote" using http
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git-http-fetch -v -a "$head" "$remote/" || exit
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;;
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rsync://*)
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TMP_HEAD="$GIT_DIR/TMP_HEAD"
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rsync -L -q "$remote/$remote_name" "$TMP_HEAD" || exit 1
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head=$(git-rev-parse TMP_HEAD)
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rm -f "$TMP_HEAD"
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test "$rsync_slurped_objects" || {
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rsync -av --ignore-existing --exclude info \
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"$remote/objects/" "$GIT_OBJECT_DIRECTORY/" || exit
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# Look at objects/info/alternates for rsync -- http will
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# support it natively and git native ones will do it on the remote
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# end. Not having that file is not a crime.
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rsync -q "$remote/objects/info/alternates" \
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"$GIT_DIR/TMP_ALT" 2>/dev/null ||
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rm -f "$GIT_DIR/TMP_ALT"
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if test -f "$GIT_DIR/TMP_ALT"
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then
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resolve_alternates "$remote" <"$GIT_DIR/TMP_ALT" |
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while read alt
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do
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case "$alt" in 'bad alternate: '*) die "$alt";; esac
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echo >&2 "Getting alternate: $alt"
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rsync -av --ignore-existing --exclude info \
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"$alt" "$GIT_OBJECT_DIRECTORY/" || exit
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done
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rm -f "$GIT_DIR/TMP_ALT"
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fi
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rsync_slurped_objects=t
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}
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;;
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*)
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# We will do git native transport with just one call later.
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continue ;;
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esac
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append_fetch_head "$head" "$remote" "$remote_name" "$remote_nick" "$local_name"
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done
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case "$remote" in
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http://* | https://* | rsync://* )
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;; # we are already done.
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*)
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(
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git-fetch-pack "$remote" $rref || echo failed "$remote"
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) |
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while read sha1 remote_name
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do
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case "$sha1" in
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failed)
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echo >&2 "Fetch failure: $remote"
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exit 1 ;;
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esac
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found=
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single_force=
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for ref in $refs
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do
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case "$ref" in
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+$remote_name:*)
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single_force=t
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found="$ref"
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break ;;
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$remote_name:*)
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found="$ref"
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break ;;
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esac
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done
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local_name=$(expr "$found" : '[^:]*:\(.*\)')
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append_fetch_head "$sha1" "$remote" "$remote_name" "$remote_nick" "$local_name"
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done || exit
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;;
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esac
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# If the original head was empty (i.e. no "master" yet), or
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# if we were told not to worry, we do not have to check.
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case ",$update_head_ok,$orig_head," in
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*,, | t,* )
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;;
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*)
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curr_head=$(cat "$GIT_DIR/HEAD" 2>/dev/null)
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if test "$curr_head" != "$orig_head"
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then
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echo "$orig_head" >$GIT_DIR/HEAD
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die "Cannot fetch into the current branch."
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fi
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;;
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esac
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