4da9028578
Signed-off-by: Junio C Hamano <junkio@cox.net>
480 lines
11 KiB
Bash
Executable File
480 lines
11 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
|
|
USAGE='<fetch-options> <repository> <refspec>...'
|
|
SUBDIRECTORY_OK=Yes
|
|
. git-sh-setup
|
|
TOP=$(git-rev-parse --show-cdup)
|
|
if test ! -z "$TOP"
|
|
then
|
|
cd "$TOP"
|
|
fi
|
|
. git-parse-remote
|
|
_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
|
|
_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
|
|
|
|
LF='
|
|
'
|
|
IFS="$LF"
|
|
|
|
rloga=fetch
|
|
no_tags=
|
|
tags=
|
|
append=
|
|
force=
|
|
verbose=
|
|
update_head_ok=
|
|
exec=
|
|
upload_pack=
|
|
keep=
|
|
while case "$#" in 0) break ;; esac
|
|
do
|
|
case "$1" in
|
|
-a|--a|--ap|--app|--appe|--appen|--append)
|
|
append=t
|
|
;;
|
|
--upl|--uplo|--uploa|--upload|--upload-|--upload-p|\
|
|
--upload-pa|--upload-pac|--upload-pack)
|
|
shift
|
|
exec="--exec=$1"
|
|
upload_pack="-u $1"
|
|
;;
|
|
-f|--f|--fo|--for|--forc|--force)
|
|
force=t
|
|
;;
|
|
-t|--t|--ta|--tag|--tags)
|
|
tags=t
|
|
;;
|
|
-n|--n|--no|--no-|--no-t|--no-ta|--no-tag|--no-tags)
|
|
no_tags=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
|
|
;;
|
|
-v|--verbose)
|
|
verbose=Yes
|
|
;;
|
|
-k|--k|--ke|--kee|--keep)
|
|
keep='-k -k'
|
|
;;
|
|
--reflog-action=*)
|
|
rloga=`expr "z$1" : 'z-[^=]*=\(.*\)'`
|
|
;;
|
|
-*)
|
|
usage
|
|
;;
|
|
*)
|
|
break
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
|
|
case "$#" in
|
|
0)
|
|
origin=$(get_default_remote)
|
|
test -n "$(get_remote_url ${origin})" ||
|
|
die "Where do you want to fetch from today?"
|
|
set x $origin ; shift ;;
|
|
esac
|
|
|
|
remote_nick="$1"
|
|
remote=$(get_remote_url "$@")
|
|
refs=
|
|
rref=
|
|
rsync_slurped_objects=
|
|
|
|
rloga="$rloga $remote_nick"
|
|
test "$remote_nick" = "$remote" || rloga="$rloga $remote"
|
|
|
|
if test "" = "$append"
|
|
then
|
|
: >"$GIT_DIR/FETCH_HEAD"
|
|
fi
|
|
|
|
# Global that is reused later
|
|
ls_remote_result=$(git ls-remote $upload_pack "$remote") ||
|
|
die "Cannot find the reflist at $remote"
|
|
|
|
append_fetch_head () {
|
|
head_="$1"
|
|
remote_="$2"
|
|
remote_name_="$3"
|
|
remote_nick_="$4"
|
|
local_name_="$5"
|
|
case "$6" in
|
|
t) not_for_merge_='not-for-merge' ;;
|
|
'') not_for_merge_= ;;
|
|
esac
|
|
|
|
# remote-nick is the URL given on the command line (or a shorthand)
|
|
# remote-name is the $GIT_DIR relative refs/ path we computed
|
|
# for this refspec.
|
|
|
|
# the $note_ variable will be fed to git-fmt-merge-msg for further
|
|
# processing.
|
|
case "$remote_name_" in
|
|
HEAD)
|
|
note_= ;;
|
|
refs/heads/*)
|
|
note_="$(expr "$remote_name_" : 'refs/heads/\(.*\)')"
|
|
note_="branch '$note_' of " ;;
|
|
refs/tags/*)
|
|
note_="$(expr "$remote_name_" : 'refs/tags/\(.*\)')"
|
|
note_="tag '$note_' of " ;;
|
|
refs/remotes/*)
|
|
note_="$(expr "$remote_name_" : 'refs/remotes/\(.*\)')"
|
|
note_="remote branch '$note_' of " ;;
|
|
*)
|
|
note_="$remote_name of " ;;
|
|
esac
|
|
remote_1_=$(expr "z$remote_" : 'z\(.*\)\.git/*$') &&
|
|
remote_="$remote_1_"
|
|
note_="$note_$remote_"
|
|
|
|
# 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 "$head_^0") || exit
|
|
echo "$headc_ $not_for_merge_ $note_" >>"$GIT_DIR/FETCH_HEAD"
|
|
else
|
|
echo "$head_ not-for-merge $note_" >>"$GIT_DIR/FETCH_HEAD"
|
|
fi
|
|
|
|
update_local_ref "$local_name_" "$head_" "$note_"
|
|
}
|
|
|
|
update_local_ref () {
|
|
# If we are storing the head locally make sure that it is
|
|
# a fast forward (aka "reverse push").
|
|
|
|
label_=$(git-cat-file -t $2)
|
|
newshort_=$(git-rev-parse --short $2)
|
|
if test -z "$1" ; then
|
|
[ "$verbose" ] && echo >&2 "* fetched $3"
|
|
[ "$verbose" ] && echo >&2 " $label_: $newshort_"
|
|
return 0
|
|
fi
|
|
oldshort_=$(git show-ref --hash --abbrev "$1" 2>/dev/null)
|
|
|
|
case "$1" in
|
|
refs/tags/*)
|
|
# Tags need not be pointing at commits so there
|
|
# is no way to guarantee "fast-forward" anyway.
|
|
if test -n "$oldshort_"
|
|
then
|
|
if now_=$(git show-ref --hash "$1") && test "$now_" = "$2"
|
|
then
|
|
[ "$verbose" ] && echo >&2 "* $1: same as $3"
|
|
[ "$verbose" ] && echo >&2 " $label_: $newshort_" ||:
|
|
else
|
|
echo >&2 "* $1: updating with $3"
|
|
echo >&2 " $label_: $newshort_"
|
|
git-update-ref -m "$rloga: updating tag" "$1" "$2"
|
|
fi
|
|
else
|
|
echo >&2 "* $1: storing $3"
|
|
echo >&2 " $label_: $newshort_"
|
|
git-update-ref -m "$rloga: storing tag" "$1" "$2"
|
|
fi
|
|
;;
|
|
|
|
refs/heads/* | refs/remotes/*)
|
|
# $1 is the ref being updated.
|
|
# $2 is the new value for the ref.
|
|
local=$(git-rev-parse --verify "$1^0" 2>/dev/null)
|
|
if test "$local"
|
|
then
|
|
# Require fast-forward.
|
|
mb=$(git-merge-base "$local" "$2") &&
|
|
case "$2,$mb" in
|
|
$local,*)
|
|
if test -n "$verbose"
|
|
then
|
|
echo >&2 "* $1: same as $3"
|
|
echo >&2 " $label_: $newshort_"
|
|
fi
|
|
;;
|
|
*,$local)
|
|
echo >&2 "* $1: fast forward to $3"
|
|
echo >&2 " old..new: $oldshort_..$newshort_"
|
|
git-update-ref -m "$rloga: fast-forward" "$1" "$2" "$local"
|
|
;;
|
|
*)
|
|
false
|
|
;;
|
|
esac || {
|
|
case ",$force,$single_force," in
|
|
*,t,*)
|
|
echo >&2 "* $1: forcing update to non-fast forward $3"
|
|
echo >&2 " old...new: $oldshort_...$newshort_"
|
|
git-update-ref -m "$rloga: forced-update" "$1" "$2" "$local"
|
|
;;
|
|
*)
|
|
echo >&2 "* $1: not updating to non-fast forward $3"
|
|
echo >&2 " old...new: $oldshort_...$newshort_"
|
|
exit 1
|
|
;;
|
|
esac
|
|
}
|
|
else
|
|
echo >&2 "* $1: storing $3"
|
|
echo >&2 " $label_: $newshort_"
|
|
git-update-ref -m "$rloga: storing head" "$1" "$2"
|
|
fi
|
|
;;
|
|
esac
|
|
}
|
|
|
|
case "$update_head_ok" in
|
|
'')
|
|
orig_head=$(git-rev-parse --verify HEAD 2>/dev/null)
|
|
;;
|
|
esac
|
|
|
|
# If --tags (and later --heads or --all) is specified, then we are
|
|
# not talking about defaults stored in Pull: line of remotes or
|
|
# branches file, and just fetch those and refspecs explicitly given.
|
|
# Otherwise we do what we always did.
|
|
|
|
reflist=$(get_remote_refs_for_fetch "$@")
|
|
if test "$tags"
|
|
then
|
|
taglist=`IFS=" " &&
|
|
echo "$ls_remote_result" |
|
|
while read sha1 name
|
|
do
|
|
case "$sha1" in
|
|
fail)
|
|
exit 1
|
|
esac
|
|
case "$name" in
|
|
*^*) continue ;;
|
|
refs/tags/*) ;;
|
|
*) continue ;;
|
|
esac
|
|
if git-check-ref-format "$name"
|
|
then
|
|
echo ".${name}:${name}"
|
|
else
|
|
echo >&2 "warning: tag ${name} ignored"
|
|
fi
|
|
done` || exit
|
|
if test "$#" -gt 1
|
|
then
|
|
# remote URL plus explicit refspecs; we need to merge them.
|
|
reflist="$reflist$LF$taglist"
|
|
else
|
|
# No explicit refspecs; fetch tags only.
|
|
reflist=$taglist
|
|
fi
|
|
fi
|
|
|
|
fetch_main () {
|
|
reflist="$1"
|
|
refs=
|
|
rref=
|
|
|
|
for ref in $reflist
|
|
do
|
|
refs="$refs$LF$ref"
|
|
|
|
# These are relative path from $GIT_DIR, typically starting at refs/
|
|
# but may be HEAD
|
|
if expr "z$ref" : 'z\.' >/dev/null
|
|
then
|
|
not_for_merge=t
|
|
ref=$(expr "z$ref" : 'z\.\(.*\)')
|
|
else
|
|
not_for_merge=
|
|
fi
|
|
if expr "z$ref" : 'z+' >/dev/null
|
|
then
|
|
single_force=t
|
|
ref=$(expr "z$ref" : 'z+\(.*\)')
|
|
else
|
|
single_force=
|
|
fi
|
|
remote_name=$(expr "z$ref" : 'z\([^:]*\):')
|
|
local_name=$(expr "z$ref" : 'z[^:]*:\(.*\)')
|
|
|
|
rref="$rref$LF$remote_name"
|
|
|
|
# There are transports that can fetch only one head at a time...
|
|
case "$remote" in
|
|
http://* | https://* | ftp://*)
|
|
proto=`expr "$remote" : '\([^:]*\):'`
|
|
if [ -n "$GIT_SSL_NO_VERIFY" ]; then
|
|
curl_extra_args="-k"
|
|
fi
|
|
if [ -n "$GIT_CURL_FTP_NO_EPSV" -o \
|
|
"`git-repo-config --bool http.noEPSV`" = true ]; then
|
|
noepsv_opt="--disable-epsv"
|
|
fi
|
|
|
|
# Find $remote_name from ls-remote output.
|
|
head=$(
|
|
IFS=' '
|
|
echo "$ls_remote_result" |
|
|
while read sha1 name
|
|
do
|
|
test "z$name" = "z$remote_name" || continue
|
|
echo "$sha1"
|
|
break
|
|
done
|
|
)
|
|
expr "z$head" : "z$_x40\$" >/dev/null ||
|
|
die "No such ref $remote_name at $remote"
|
|
echo >&2 "Fetching $remote_name from $remote using $proto"
|
|
git-http-fetch -v -a "$head" "$remote/" || exit
|
|
;;
|
|
rsync://*)
|
|
TMP_HEAD="$GIT_DIR/TMP_HEAD"
|
|
rsync -L -q "$remote/$remote_name" "$TMP_HEAD" || exit 1
|
|
head=$(git-rev-parse --verify TMP_HEAD)
|
|
rm -f "$TMP_HEAD"
|
|
test "$rsync_slurped_objects" || {
|
|
rsync -av --ignore-existing --exclude info \
|
|
"$remote/objects/" "$GIT_OBJECT_DIRECTORY/" || exit
|
|
|
|
# Look at objects/info/alternates for rsync -- http will
|
|
# support it natively and git native ones will do it on
|
|
# the remote end. Not having that file is not a crime.
|
|
rsync -q "$remote/objects/info/alternates" \
|
|
"$GIT_DIR/TMP_ALT" 2>/dev/null ||
|
|
rm -f "$GIT_DIR/TMP_ALT"
|
|
if test -f "$GIT_DIR/TMP_ALT"
|
|
then
|
|
resolve_alternates "$remote" <"$GIT_DIR/TMP_ALT" |
|
|
while read alt
|
|
do
|
|
case "$alt" in 'bad alternate: '*) die "$alt";; esac
|
|
echo >&2 "Getting alternate: $alt"
|
|
rsync -av --ignore-existing --exclude info \
|
|
"$alt" "$GIT_OBJECT_DIRECTORY/" || exit
|
|
done
|
|
rm -f "$GIT_DIR/TMP_ALT"
|
|
fi
|
|
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" "$local_name" "$not_for_merge" || exit
|
|
|
|
done
|
|
|
|
case "$remote" in
|
|
http://* | https://* | ftp://* | rsync://* )
|
|
;; # we are already done.
|
|
*)
|
|
( : subshell because we muck with IFS
|
|
pack_lockfile=
|
|
IFS=" $LF"
|
|
(
|
|
git-fetch-pack --thin $exec $keep "$remote" $rref || echo failed "$remote"
|
|
) |
|
|
while read sha1 remote_name
|
|
do
|
|
case "$sha1" in
|
|
failed)
|
|
echo >&2 "Fetch failure: $remote"
|
|
exit 1 ;;
|
|
# special line coming from index-pack with the pack name
|
|
pack)
|
|
continue ;;
|
|
keep)
|
|
pack_lockfile="$GIT_OBJECT_DIRECTORY/pack/pack-$remote_name.keep"
|
|
continue ;;
|
|
esac
|
|
found=
|
|
single_force=
|
|
for ref in $refs
|
|
do
|
|
case "$ref" in
|
|
+$remote_name:*)
|
|
single_force=t
|
|
not_for_merge=
|
|
found="$ref"
|
|
break ;;
|
|
.+$remote_name:*)
|
|
single_force=t
|
|
not_for_merge=t
|
|
found="$ref"
|
|
break ;;
|
|
.$remote_name:*)
|
|
not_for_merge=t
|
|
found="$ref"
|
|
break ;;
|
|
$remote_name:*)
|
|
not_for_merge=
|
|
found="$ref"
|
|
break ;;
|
|
esac
|
|
done
|
|
local_name=$(expr "z$found" : 'z[^:]*:\(.*\)')
|
|
append_fetch_head "$sha1" "$remote" \
|
|
"$remote_name" "$remote_nick" "$local_name" \
|
|
"$not_for_merge" || exit
|
|
done &&
|
|
if [ "$pack_lockfile" ]; then rm -f "$pack_lockfile"; fi
|
|
) || exit ;;
|
|
esac
|
|
|
|
}
|
|
|
|
fetch_main "$reflist" || exit
|
|
|
|
# automated tag following
|
|
case "$no_tags$tags" in
|
|
'')
|
|
case "$reflist" in
|
|
*:refs/*)
|
|
# effective only when we are following remote branch
|
|
# using local tracking branch.
|
|
taglist=$(IFS=" " &&
|
|
echo "$ls_remote_result" |
|
|
sed -n -e 's|^\('"$_x40"'\) \(refs/tags/.*\)^{}$|\1 \2|p' \
|
|
-e 's|^\('"$_x40"'\) \(refs/tags/.*\)$|\1 \2|p' |
|
|
while read sha1 name
|
|
do
|
|
git-show-ref --verify --quiet -- "$name" && continue
|
|
git-check-ref-format "$name" || {
|
|
echo >&2 "warning: tag ${name} ignored"
|
|
continue
|
|
}
|
|
git-cat-file -t "$sha1" >/dev/null 2>&1 || continue
|
|
echo >&2 "Auto-following $name"
|
|
echo ".${name}:${name}"
|
|
done)
|
|
esac
|
|
case "$taglist" in
|
|
'') ;;
|
|
?*)
|
|
fetch_main "$taglist" || exit ;;
|
|
esac
|
|
esac
|
|
|
|
# If the original head was empty (i.e. no "master" yet), or
|
|
# if we were told not to worry, we do not have to check.
|
|
case "$orig_head" in
|
|
'')
|
|
;;
|
|
?*)
|
|
curr_head=$(git-rev-parse --verify HEAD 2>/dev/null)
|
|
if test "$curr_head" != "$orig_head"
|
|
then
|
|
git-update-ref \
|
|
-m "$rloga: Undoing incorrectly fetched HEAD." \
|
|
HEAD "$orig_head"
|
|
die "Cannot fetch into the current branch."
|
|
fi
|
|
;;
|
|
esac
|