[thirdparty/git.git] / git-fetch.sh

#!/bin/sh
#

USAGE='<fetch-options> <repository> <refspec>...'
SUBDIRECTORY_OK=Yes
. git-sh-setup
set_reflog_action "fetch $*"

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"

no_tags=
tags=
append=
force=
verbose=
update_head_ok=
exec=
upload_pack=
keep=
shallow_depth=
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'
		;;
	--depth=*)
		shallow_depth="--depth=`expr "z$1" : 'z-[^=]*=\(.*\)'`"
		;;
	--depth)
		shift
		shallow_depth="--depth=$1"
		;;
	-*)
		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=

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 get the repository state from $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_: $newshort_"
			git-update-ref -m "$GIT_REFLOG_ACTION: updating tag" "$1" "$2"
		fi
	else
		echo >&2 "* $1: storing $3"
		echo >&2 "  $label_: $newshort_"
		git-update-ref -m "$GIT_REFLOG_ACTION: 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 "$GIT_REFLOG_ACTION: 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 "$GIT_REFLOG_ACTION: 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_: $newshort_"
	    git-update-ref -m "$GIT_REFLOG_ACTION: 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 "$remote" in
      http://* | https://* | ftp://*)
	  test -n "$shallow_depth" &&
		die "shallow clone with http not supported"
	  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" "$remote/" || exit
	  ;;
      rsync://*)
	  test -n "$shallow_depth" &&
		die "shallow clone with rsync not supported"
	  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
      IFS=" 	$LF"
      (
	  git-fetch-pack --thin $exec $keep $shallow_depth "$remote" $rref ||
	  echo failed "$remote"
      ) |
      (
	trap '
		if test -n "$keepfile" && test -f "$keepfile"
		then
			rm -f "$keepfile"
		fi
	' 0

        keepfile=
	while read sha1 remote_name
	do
	  case "$sha1" in
	  failed)
		  echo >&2 "Fetch failure: $remote"
		  exit 1 ;;
	  # special line coming from index-pack with the pack name
	  pack)
		  continue ;;
	  keep)
		  keepfile="$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
      )
    ) || 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 "$ls_remote_result" |
		git-show-ref --exclude-existing=refs/tags/ |
		while read sha1 name
		do
			git-cat-file -t "$sha1" >/dev/null 2>&1 || continue
			echo >&2 "Auto-following $name"
			echo ".${name}:${name}"
		done)
	esac
	case "$taglist" in
	'') ;;
	?*)
		# do not deepen a shallow tree when following tags
		shallow_depth=
		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 "$GIT_REFLOG_ACTION: Undoing incorrectly fetched HEAD." \
			HEAD "$orig_head"
		die "Cannot fetch into the current branch."
	fi
	;;
esac
Commit	Line	Data
7ef76925 LT	1	#!/bin/sh
7ef76925 LT	2	#
87358b7a FK	3
87358b7a FK	4	USAGE='<fetch-options> <repository> <refspec>...'
4da90285	5	SUBDIRECTORY_OK=Yes
ae2b0f15	6	. git-sh-setup
f9474132 SP	7	set_reflog_action "fetch $*"
f9474132 SP	8
4da90285 JH	9	TOP=$(git-rev-parse --show-cdup)
	10	if test ! -z "$TOP"
	11	then
	12	cd "$TOP"
	13	fi
215a7ad1	14	. git-parse-remote
853a3697 JH	15	_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
	16	_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
	17
221e743c JH	18	LF='
	19	'
	20	IFS="$LF"
	21
03febf99	22	no_tags=
ed1aadf1	23	tags=
853a3697	24	append=
ae2da406	25	force=
583122cd	26	verbose=
b10ac50f	27	update_head_ok=
2c620a1a	28	exec=
96b086d6	29	upload_pack=
920ccbfc	30	keep=
f53514bc	31	shallow_depth=
ae2da406 JH	32	while case "$#" in 0) break ;; esac
	33	do
	34	case "$1" in
	35	-a\|--a\|--ap\|--app\|--appe\|--appen\|--append)
	36	append=t
ae2da406	37	;;
2796a9de JH	38	--upl\|--uplo\|--uploa\|--upload\|--upload-\|--upload-p\|\
2796a9de JH	39	--upload-pa\|--upload-pac\|--upload-pack)
2c620a1a MO	40	shift
2c620a1a MO	41	exec="--exec=$1"
96b086d6	42	upload_pack="-u $1"
2c620a1a	43	;;
ae2da406 JH	44	-f\|--f\|--fo\|--for\|--forc\|--force)
ae2da406 JH	45	force=t
b10ac50f	46	;;
ed1aadf1 LT	47	-t\|--t\|--ta\|--tag\|--tags)
	48	tags=t
	49	;;
03febf99 JH	50	-n\|--n\|--no\|--no-\|--no-t\|--no-ta\|--no-tag\|--no-tags)
	51	no_tags=t
	52	;;
b10ac50f JH	53	-u\|--u\|--up\|--upd\|--upda\|--updat\|--update\|--update-\|--update-h\|\
	54	--update-he\|--update-hea\|--update-head\|--update-head-\|\
	55	--update-head-o\|--update-head-ok)
	56	update_head_ok=t
ae2da406	57	;;
583122cd LT	58	-v\|--verbose)
	59	verbose=Yes
	60	;;
0f76f526	61	-k\|--k\|--ke\|--kee\|--keep)
576162a4	62	keep='-k -k'
0f76f526	63	;;
f53514bc JS	64	--depth=*)
	65	shallow_depth="--depth=`expr "z$1" : 'z-[^=]=\(.\)'`"
	66	;;
	67	--depth)
	68	shift
	69	shallow_depth="--depth=$1"
	70	;;
87358b7a FK	71	-*)
	72	usage
	73	;;
ae2da406 JH	74	*)
	75	break
	76	;;
	77	esac
b10ac50f	78	shift
ae2da406 JH	79	done
ae2da406 JH	80
853a3697 JH	81	case "$#" in
853a3697 JH	82	0)
648ad18f SB	83	origin=$(get_default_remote)
	84	test -n "$(get_remote_url ${origin})" \|\|
	85	die "Where do you want to fetch from today?"
	86	set x $origin ; shift ;;
853a3697	87	esac
ae2da406	88
853a3697 JH	89	remote_nick="$1"
	90	remote=$(get_remote_url "$@")
	91	refs=
	92	rref=
	93	rsync_slurped_objects=
	94
	95	if test "" = "$append"
	96	then
df34297a	97	: >"$GIT_DIR/FETCH_HEAD"
853a3697 JH	98	fi
853a3697 JH	99
28b8e61f JH	100	# Global that is reused later
28b8e61f JH	101	ls_remote_result=$(git ls-remote $upload_pack "$remote") \|\|
b3d98993	102	die "Cannot get the repository state from $remote"
28b8e61f	103
853a3697 JH	104	append_fetch_head () {
	105	head_="$1"
	106	remote_="$2"
	107	remote_name_="$3"
	108	remote_nick_="$4"
	109	local_name_="$5"
05dd8e2e JH	110	case "$6" in
	111	t) not_for_merge_='not-for-merge' ;;
	112	'') not_for_merge_= ;;
	113	esac
853a3697	114
06ec2b4b JH	115	# remote-nick is the URL given on the command line (or a shorthand)
	116	# remote-name is the $GIT_DIR relative refs/ path we computed
	117	# for this refspec.
687b8be8 EW	118
	119	# the $note_ variable will be fed to git-fmt-merge-msg for further
	120	# processing.
06ec2b4b JH	121	case "$remote_name_" in
	122	HEAD)
	123	note_= ;;
	124	refs/heads/*)
	125	note_="$(expr "$remote_name_" : 'refs/heads/\(.*\)')"
b91fb518	126	note_="branch '$note_' of " ;;
06ec2b4b JH	127	refs/tags/*)
06ec2b4b JH	128	note_="$(expr "$remote_name_" : 'refs/tags/\(.*\)')"
b91fb518	129	note_="tag '$note_' of " ;;
687b8be8 EW	130	refs/remotes/*)
	131	note_="$(expr "$remote_name_" : 'refs/remotes/\(.*\)')"
	132	note_="remote branch '$note_' of " ;;
06ec2b4b	133	*)
b91fb518	134	note_="$remote_name of " ;;
06ec2b4b	135	esac
f327dbce	136	remote_1_=$(expr "z$remote_" : 'z\(.\)\.git/$') &&
b91fb518 JH	137	remote_="$remote_1_"
b91fb518 JH	138	note_="$note_$remote_"
06ec2b4b	139
853a3697 JH	140	# 2.6.11-tree tag would not be happy to be fed to resolve.
	141	if git-cat-file commit "$head_" >/dev/null 2>&1
	142	then
8572aa85	143	headc_=$(git-rev-parse --verify "$head_^0") \|\| exit
df34297a	144	echo "$headc_ $not_for_merge_ $note_" >>"$GIT_DIR/FETCH_HEAD"
853a3697	145	else
df34297a	146	echo "$head_ not-for-merge $note_" >>"$GIT_DIR/FETCH_HEAD"
853a3697	147	fi
20a3847d SB	148
20a3847d SB	149	update_local_ref "$local_name_" "$head_" "$note_"
853a3697 JH	150	}
853a3697 JH	151
20a3847d SB	152	update_local_ref () {
	153	# If we are storing the head locally make sure that it is
	154	# a fast forward (aka "reverse push").
	155
	156	label_=$(git-cat-file -t $2)
	157	newshort_=$(git-rev-parse --short $2)
	158	if test -z "$1" ; then
	159	[ "$verbose" ] && echo >&2 "* fetched $3"
	160	[ "$verbose" ] && echo >&2 " $label_: $newshort_"
	161	return 0
	162	fi
fbc72799 JH	163	oldshort_=$(git show-ref --hash --abbrev "$1" 2>/dev/null)
fbc72799 JH	164
853a3697 JH	165	case "$1" in
	166	refs/tags/*)
	167	# Tags need not be pointing at commits so there
	168	# is no way to guarantee "fast-forward" anyway.
fbc72799	169	if test -n "$oldshort_"
ae2da406	170	then
fbc72799	171	if now_=$(git show-ref --hash "$1") && test "$now_" = "$2"
f8765797	172	then
20a3847d SB	173	[ "$verbose" ] && echo >&2 "* $1: same as $3"
20a3847d SB	174	[ "$verbose" ] && echo >&2 " $label_: $newshort_" \|\|:
f8765797 JH	175	else
f8765797 JH	176	echo >&2 "* $1: updating with $3"
20a3847d	177	echo >&2 " $label_: $newshort_"
f9474132	178	git-update-ref -m "$GIT_REFLOG_ACTION: updating tag" "$1" "$2"
f8765797	179	fi
ae2da406	180	else
06ec2b4b	181	echo >&2 "* $1: storing $3"
20a3847d	182	echo >&2 " $label_: $newshort_"
f9474132	183	git-update-ref -m "$GIT_REFLOG_ACTION: storing tag" "$1" "$2"
ae2da406	184	fi
bf7960eb	185	;;
ae2da406	186
687b8be8	187	refs/heads/* \| refs/remotes/*)
bf7960eb JH	188	# $1 is the ref being updated.
	189	# $2 is the new value for the ref.
	190	local=$(git-rev-parse --verify "$1^0" 2>/dev/null)
	191	if test "$local"
33b83034	192	then
bf7960eb	193	# Require fast-forward.
853a3697 JH	194	mb=$(git-merge-base "$local" "$2") &&
	195	case "$2,$mb" in
	196	$local,*)
ea5aeb07 JH	197	if test -n "$verbose"
	198	then
	199	echo >&2 "* $1: same as $3"
20a3847d	200	echo >&2 " $label_: $newshort_"
ea5aeb07	201	fi
853a3697 JH	202	;;
853a3697 JH	203	*,$local)
06ec2b4b	204	echo >&2 "* $1: fast forward to $3"
20a3847d	205	echo >&2 " old..new: $oldshort_..$newshort_"
f9474132	206	git-update-ref -m "$GIT_REFLOG_ACTION: fast-forward" "$1" "$2" "$local"
853a3697 JH	207	;;
	208	*)
	209	false
	210	;;
	211	esac \|\| {
bf7960eb JH	212	case ",$force,$single_force," in
bf7960eb JH	213	,t,)
20a3847d SB	214	echo >&2 "* $1: forcing update to non-fast forward $3"
20a3847d SB	215	echo >&2 " old...new: $oldshort_...$newshort_"
f9474132	216	git-update-ref -m "$GIT_REFLOG_ACTION: forced-update" "$1" "$2" "$local"
ae2da406 JH	217	;;
ae2da406 JH	218	*)
20a3847d SB	219	echo >&2 "* $1: not updating to non-fast forward $3"
20a3847d SB	220	echo >&2 " old...new: $oldshort_...$newshort_"
a9698bb2	221	exit 1
ae2da406 JH	222	;;
ae2da406 JH	223	esac
853a3697 JH	224	}
853a3697 JH	225	else
bf7960eb	226	echo >&2 "* $1: storing $3"
20a3847d	227	echo >&2 " $label_: $newshort_"
f9474132	228	git-update-ref -m "$GIT_REFLOG_ACTION: storing head" "$1" "$2"
33b83034	229	fi
0a623e7c	230	;;
853a3697 JH	231	esac
	232	}
	233
b10ac50f JH	234	case "$update_head_ok" in
b10ac50f JH	235	'')
bf7960eb	236	orig_head=$(git-rev-parse --verify HEAD 2>/dev/null)
b10ac50f JH	237	;;
	238	esac
	239
ed1aadf1 LT	240	# If --tags (and later --heads or --all) is specified, then we are
	241	# not talking about defaults stored in Pull: line of remotes or
	242	# branches file, and just fetch those and refspecs explicitly given.
	243	# Otherwise we do what we always did.
	244
	245	reflist=$(get_remote_refs_for_fetch "$@")
	246	if test "$tags"
	247	then
ed9f7c95	248	taglist=`IFS=' ' &&
28b8e61f	249	echo "$ls_remote_result" \|
81214e4d JH	250	while read sha1 name
81214e4d JH	251	do
57a39690 JH	252	case "$sha1" in
	253	fail)
	254	exit 1
	255	esac
81214e4d	256	case "$name" in
878ccb26	257	^) continue ;;
28b8e61f JH	258	refs/tags/*) ;;
28b8e61f JH	259	*) continue ;;
81214e4d JH	260	esac
	261	if git-check-ref-format "$name"
	262	then
	263	echo ".${name}:${name}"
	264	else
	265	echo >&2 "warning: tag ${name} ignored"
	266	fi
57a39690	267	done` \|\| exit
ed1aadf1 LT	268	if test "$#" -gt 1
	269	then
	270	# remote URL plus explicit refspecs; we need to merge them.
221e743c	271	reflist="$reflist$LF$taglist"
ed1aadf1 LT	272	else
	273	# No explicit refspecs; fetch tags only.
	274	reflist=$taglist
	275	fi
	276	fi
	277
03febf99 JH	278	fetch_main () {
	279	reflist="$1"
	280	refs=
4839bd8a	281	rref=
f170e4b3	282
03febf99 JH	283	for ref in $reflist
	284	do
	285	refs="$refs$LF$ref"
f170e4b3	286
03febf99 JH	287	# These are relative path from $GIT_DIR, typically starting at refs/
03febf99 JH	288	# but may be HEAD
f327dbce	289	if expr "z$ref" : 'z\.' >/dev/null
03febf99 JH	290	then
03febf99 JH	291	not_for_merge=t
f327dbce	292	ref=$(expr "z$ref" : 'z\.\(.*\)')
03febf99 JH	293	else
	294	not_for_merge=
	295	fi
dfdcb558	296	if expr "z$ref" : 'z+' >/dev/null
03febf99 JH	297	then
03febf99 JH	298	single_force=t
dfdcb558	299	ref=$(expr "z$ref" : 'z+\(.*\)')
03febf99 JH	300	else
	301	single_force=
	302	fi
f327dbce MW	303	remote_name=$(expr "z$ref" : 'z\([^:]*\):')
f327dbce MW	304	local_name=$(expr "z$ref" : 'z[^:]:\(.\)')
853a3697	305
03febf99	306	rref="$rref$LF$remote_name"
4447badc	307
03febf99 JH	308	# There are transports that can fetch only one head at a time...
03febf99 JH	309	case "$remote" in
38529e28	310	http://* \| https://* \| ftp://*)
f53514bc JS	311	test -n "$shallow_depth" &&
f53514bc JS	312	die "shallow clone with http not supported"
ddaf7314	313	proto=`expr "$remote" : '\([^:]*\):'`
03febf99 JH	314	if [ -n "$GIT_SSL_NO_VERIFY" ]; then
	315	curl_extra_args="-k"
	316	fi
3ea099d4 SK	317	if [ -n "$GIT_CURL_FTP_NO_EPSV" -o \
	318	"`git-repo-config --bool http.noEPSV`" = true ]; then
	319	noepsv_opt="--disable-epsv"
	320	fi
2986c022 JH	321
	322	# Find $remote_name from ls-remote output.
	323	head=$(
	324	IFS=' '
	325	echo "$ls_remote_result" \|
	326	while read sha1 name
	327	do
	328	test "z$name" = "z$remote_name" \|\| continue
	329	echo "$sha1"
	330	break
	331	done
	332	)
f327dbce	333	expr "z$head" : "z$_x40\$" >/dev/null \|\|
2986c022	334	die "No such ref $remote_name at $remote"
ddaf7314	335	echo >&2 "Fetching $remote_name from $remote using $proto"
03febf99 JH	336	git-http-fetch -v -a "$head" "$remote/" \|\| exit
	337	;;
	338	rsync://*)
f53514bc JS	339	test -n "$shallow_depth" &&
f53514bc JS	340	die "shallow clone with rsync not supported"
03febf99 JH	341	TMP_HEAD="$GIT_DIR/TMP_HEAD"
	342	rsync -L -q "$remote/$remote_name" "$TMP_HEAD" \|\| exit 1
	343	head=$(git-rev-parse --verify TMP_HEAD)
	344	rm -f "$TMP_HEAD"
	345	test "$rsync_slurped_objects" \|\| {
	346	rsync -av --ignore-existing --exclude info \
	347	"$remote/objects/" "$GIT_OBJECT_DIRECTORY/" \|\| exit
853a3697	348
03febf99 JH	349	# Look at objects/info/alternates for rsync -- http will
	350	# support it natively and git native ones will do it on
	351	# the remote end. Not having that file is not a crime.
	352	rsync -q "$remote/objects/info/alternates" \
	353	"$GIT_DIR/TMP_ALT" 2>/dev/null \|\|
	354	rm -f "$GIT_DIR/TMP_ALT"
	355	if test -f "$GIT_DIR/TMP_ALT"
	356	then
	357	resolve_alternates "$remote" <"$GIT_DIR/TMP_ALT" \|
	358	while read alt
	359	do
	360	case "$alt" in 'bad alternate: '*) die "$alt";; esac
	361	echo >&2 "Getting alternate: $alt"
	362	rsync -av --ignore-existing --exclude info \
	363	"$alt" "$GIT_OBJECT_DIRECTORY/" \|\| exit
	364	done
	365	rm -f "$GIT_DIR/TMP_ALT"
	366	fi
	367	rsync_slurped_objects=t
	368	}
	369	;;
	370	*)
	371	# We will do git native transport with just one call later.
	372	continue ;;
	373	esac
f170e4b3	374
03febf99	375	append_fetch_head "$head" "$remote" \
f64d7fd2	376	"$remote_name" "$remote_nick" "$local_name" "$not_for_merge" \|\| exit
853a3697	377
03febf99 JH	378	done
	379
	380	case "$remote" in
38529e28	381	http://* \| https://* \| ftp://* \| rsync://* )
03febf99 JH	382	;; # we are already done.
	383	*)
	384	( : subshell because we muck with IFS
	385	IFS=" $LF"
	386	(
ac9c1108 JH	387	git-fetch-pack --thin $exec $keep $shallow_depth "$remote" $rref \|\|
ac9c1108 JH	388	echo failed "$remote"
03febf99	389	) \|
ac9c1108 JH	390	(
	391	trap '
	392	if test -n "$keepfile" && test -f "$keepfile"
	393	then
	394	rm -f "$keepfile"
	395	fi
	396	' 0
	397
	398	keepfile=
	399	while read sha1 remote_name
	400	do
03febf99 JH	401	case "$sha1" in
	402	failed)
	403	echo >&2 "Fetch failure: $remote"
	404	exit 1 ;;
576162a4 NP	405	# special line coming from index-pack with the pack name
	406	pack)
	407	continue ;;
	408	keep)
ac9c1108	409	keepfile="$GIT_OBJECT_DIRECTORY/pack/pack-$remote_name.keep"
576162a4	410	continue ;;
03febf99 JH	411	esac
	412	found=
	413	single_force=
	414	for ref in $refs
	415	do
	416	case "$ref" in
	417	+$remote_name:*)
	418	single_force=t
	419	not_for_merge=
	420	found="$ref"
	421	break ;;
	422	.+$remote_name:*)
	423	single_force=t
	424	not_for_merge=t
	425	found="$ref"
	426	break ;;
	427	.$remote_name:*)
	428	not_for_merge=t
	429	found="$ref"
	430	break ;;
	431	$remote_name:*)
	432	not_for_merge=
	433	found="$ref"
	434	break ;;
	435	esac
	436	done
f327dbce	437	local_name=$(expr "z$found" : 'z[^:]:\(.\)')
03febf99	438	append_fetch_head "$sha1" "$remote" \
f64d7fd2 JH	439	"$remote_name" "$remote_nick" "$local_name" \
f64d7fd2 JH	440	"$not_for_merge" \|\| exit
ac9c1108 JH	441	done
ac9c1108 JH	442	)
03febf99 JH	443	) \|\| exit ;;
	444	esac
	445
	446	}
	447
f64d7fd2	448	fetch_main "$reflist" \|\| exit
03febf99 JH	449
	450	# automated tag following
	451	case "$no_tags$tags" in
	452	'')
6dc78e69 JH	453	case "$reflist" in
	454	:refs/)
	455	# effective only when we are following remote branch
	456	# using local tracking branch.
ed9f7c95	457	taglist=$(IFS=' ' &&
28b8e61f	458	echo "$ls_remote_result" \|
ed9f7c95	459	git-show-ref --exclude-existing=refs/tags/ \|
6dc78e69 JH	460	while read sha1 name
6dc78e69 JH	461	do
6dc78e69 JH	462	git-cat-file -t "$sha1" >/dev/null 2>&1 \|\| continue
	463	echo >&2 "Auto-following $name"
	464	echo ".${name}:${name}"
	465	done)
	466	esac
03febf99 JH	467	case "$taglist" in
	468	'') ;;
	469	?*)
d1586315 AJ	470	# do not deepen a shallow tree when following tags
d1586315 AJ	471	shallow_depth=
f64d7fd2	472	fetch_main "$taglist" \|\| exit ;;
03febf99	473	esac
853a3697	474	esac
b10ac50f JH	475
	476	# If the original head was empty (i.e. no "master" yet), or
	477	# if we were told not to worry, we do not have to check.
9861718b JH	478	case "$orig_head" in
9861718b JH	479	'')
b10ac50f	480	;;
9861718b	481	?*)
bf7960eb	482	curr_head=$(git-rev-parse --verify HEAD 2>/dev/null)
b10ac50f JH	483	if test "$curr_head" != "$orig_head"
b10ac50f JH	484	then
55b7835e	485	git-update-ref \
f9474132	486	-m "$GIT_REFLOG_ACTION: Undoing incorrectly fetched HEAD." \
55b7835e	487	HEAD "$orig_head"
b10ac50f JH	488	die "Cannot fetch into the current branch."
	489	fi
	490	;;
	491	esac