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.
357 lines
8.0 KiB
357 lines
8.0 KiB
#!/bin/sh |
|
# |
|
|
|
USAGE='<fetch-options> <repository> <refspec>...' |
|
. git-sh-setup |
|
. 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="$LF" |
|
|
|
tags= |
|
append= |
|
force= |
|
verbose= |
|
update_head_ok= |
|
while case "$#" in 0) break ;; esac |
|
do |
|
case "$1" in |
|
-a|--a|--ap|--app|--appe|--appen|--append) |
|
append=t |
|
;; |
|
-f|--f|--fo|--for|--forc|--force) |
|
force=t |
|
;; |
|
-t|--t|--ta|--tag|--tags) |
|
tags=t |
|
;; |
|
-u|--u|--up|--upd|--upda|--updat|--update|--update-|--update-h|\ |
|
--update-he|--update-hea|--update-head|--update-head-|\ |
|
--update-head-o|--update-head-ok) |
|
update_head_ok=t |
|
;; |
|
-v|--verbose) |
|
verbose=Yes |
|
;; |
|
-*) |
|
usage |
|
;; |
|
*) |
|
break |
|
;; |
|
esac |
|
shift |
|
done |
|
|
|
case "$#" 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" |
|
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 $GIT_DIR relative refs/ path we computed |
|
# for this refspec. |
|
case "$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 '$note_' of " ;; |
|
*) |
|
note_="$remote_name of " ;; |
|
esac |
|
remote_1_=$(expr "$remote_" : '\(.*\)\.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" |
|
[ "$verbose" ] && echo >&2 "* committish: $head_" |
|
[ "$verbose" ] && echo >&2 " $note_" |
|
else |
|
echo "$head_ not-for-merge $note_" >>"$GIT_DIR/FETCH_HEAD" |
|
[ "$verbose" ] && echo >&2 "* non-commit: $head_" |
|
[ "$verbose" ] && echo >&2 " $note_" |
|
fi |
|
if test "$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_" "$note_" |
|
fi |
|
} |
|
|
|
fast_forward_local () { |
|
mkdir -p "$(dirname "$GIT_DIR/$1")" |
|
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/$1" |
|
then |
|
if now_=$(cat "$GIT_DIR/$1") && test "$now_" = "$2" |
|
then |
|
[ "$verbose" ] && echo >&2 "* $1: same as $3" |
|
else |
|
echo >&2 "* $1: updating with $3" |
|
fi |
|
else |
|
echo >&2 "* $1: storing $3" |
|
fi |
|
git-update-ref "$1" "$2" |
|
;; |
|
|
|
refs/heads/*) |
|
# $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,*) |
|
echo >&2 "* $1: same as $3" |
|
;; |
|
*,$local) |
|
echo >&2 "* $1: fast forward to $3" |
|
git-update-ref "$1" "$2" "$local" |
|
;; |
|
*) |
|
false |
|
;; |
|
esac || { |
|
echo >&2 "* $1: does not fast forward to $3;" |
|
case ",$force,$single_force," in |
|
*,t,*) |
|
echo >&2 " forcing update." |
|
git-update-ref "$1" "$2" "$local" |
|
;; |
|
*) |
|
echo >&2 " not updating." |
|
;; |
|
esac |
|
} |
|
else |
|
echo >&2 "* $1: storing $3" |
|
git-update-ref "$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=$(IFS=" " && |
|
git-ls-remote --tags "$remote" | |
|
while read sha1 name |
|
do |
|
case "$name" in |
|
(*^*) continue ;; |
|
esac |
|
if git-check-ref-format "$name" |
|
then |
|
echo ".${name}:${name}" |
|
else |
|
echo >&2 "warning: tag ${name} ignored" |
|
fi |
|
done) |
|
if test "$#" -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 |
|
|
|
for ref in $reflist |
|
do |
|
refs="$refs$LF$ref" |
|
|
|
# These are relative path from $GIT_DIR, typically starting at refs/ |
|
# but may be HEAD |
|
if expr "$ref" : '\.' >/dev/null |
|
then |
|
not_for_merge=t |
|
ref=$(expr "$ref" : '\.\(.*\)') |
|
else |
|
not_for_merge= |
|
fi |
|
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="$rref$LF$remote_name" |
|
|
|
# There are transports that can fetch only one head at a time... |
|
case "$remote" in |
|
http://* | https://*) |
|
if [ -n "$GIT_SSL_NO_VERIFY" ]; then |
|
curl_extra_args="-k" |
|
fi |
|
remote_name_quoted=$(perl -e ' |
|
my $u = $ARGV[0]; |
|
$u =~ s{([^-a-zA-Z0-9/.])}{sprintf"%%%02x",ord($1)}eg; |
|
print "$u"; |
|
' "$remote_name") |
|
head=$(curl -nsfL $curl_extra_args "$remote/$remote_name_quoted") && |
|
expr "$head" : "$_x40\$" >/dev/null || |
|
die "Failed to fetch $remote_name from $remote" |
|
echo >&2 Fetching "$remote_name from $remote" using http |
|
git-http-fetch -v -a "$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" |
|
|
|
done |
|
|
|
case "$remote" in |
|
http://* | https://* | rsync://* ) |
|
;; # we are already done. |
|
*) |
|
IFS=" $LF" |
|
( |
|
git-fetch-pack "$remote" $rref || echo failed "$remote" |
|
) | |
|
while read sha1 remote_name |
|
do |
|
case "$sha1" in |
|
failed) |
|
echo >&2 "Fetch failure: $remote" |
|
exit 1 ;; |
|
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=$(expr "$found" : '[^:]*:\(.*\)') |
|
append_fetch_head "$sha1" "$remote" \ |
|
"$remote_name" "$remote_nick" "$local_name" "$not_for_merge" |
|
done || exit |
|
;; |
|
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 ",$update_head_ok,$orig_head," in |
|
*,, | t,* ) |
|
;; |
|
*) |
|
curr_head=$(git-rev-parse --verify HEAD 2>/dev/null) |
|
if test "$curr_head" != "$orig_head" |
|
then |
|
git-update-ref HEAD "$orig_head" |
|
die "Cannot fetch into the current branch." |
|
fi |
|
;; |
|
esac
|
|
|