You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
479 lines
11 KiB
479 lines
11 KiB
#!/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
|
|
|