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