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#!/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="$LF" rloga=fetch no_tags= tags= append= force= verbose= update_head_ok= exec= upload_pack= keep=--thin while case "$#" 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=--keep ;; --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 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-rev-parse --short "$1" 2>/dev/null) mkdir -p "$(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 $3" [ "$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=" " && ( git-ls-remote $upload_pack --tags "$remote" || echo fail ouch ) | while read sha1 name do case "$sha1" in fail) exit 1 esac case "$name" in *^*) 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://*) 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 max_depth=5 depth=0 head="ref: $remote_name" while (expr "z$head" : "zref:" && expr $depth \< $max_depth) >/dev/null do remote_name_quoted=$(@@PERL@@ -e ' my $u = $ARGV[0]; $u =~ s/^ref:\s*//; $u =~ s{([^-a-zA-Z0-9/.])}{sprintf"%%%02x",ord($1)}eg; print "$u"; ' "$head") head=$(curl -nsfL $curl_extra_args $noepsv_opt "$remote/$remote_name_quoted") depth=$( expr \( $depth + 1 \) ) done expr "z$head" : "z$_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://* | ftp://* | rsync://* ) ;; # we are already done. *) ( : subshell because we muck with IFS IFS=" $LF" ( git-fetch-pack $exec $keep "$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=$(expr "z$found" : 'z[^:]*:\(.*\)') append_fetch_head "$sha1" "$remote" \ "$remote_name" "$remote_nick" "$local_name" "$not_for_merge" done ) || exit ;; esac } fetch_main "$reflist" # automated tag following case "$no_tags$tags" in '') case "$reflist" in *:refs/*) # effective only when we are following remote branch # using local tracking branch. taglist=$(IFS=" " && git-ls-remote $upload_pack --tags "$remote" | sed -ne 's|^\([0-9a-f]*\)[ ]\(refs/tags/.*\)^{}$|\1 \2|p' | while read sha1 name do test -f "$GIT_DIR/$name" && continue git-check-ref-format "$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 "$taglist" ;; esac esac # If the original head was empty (i.e. no "master" yet), or # if we were told not to worry, we do not have to check. case ",$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 \ -m "$rloga: Undoing incorrectly fetched HEAD." \ HEAD "$orig_head" die "Cannot fetch into the current branch." fi ;; esac
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