1
0
Fork 0
mirror of https://github.com/git/git.git synced 2024-10-30 22:07:53 +01:00
git/contrib/examples/git-fetch.sh
Shawn O. Pearce 2e13e5d892 Merge branch 'master' into db/fetch-pack
There's a number of tricky conflicts between master and
this topic right now due to the rewrite of builtin-push.
Junio must have handled these via rerere; I'd rather not
deal with them again so I'm pre-merging master into the
topic.  Besides this topic somehow started to depend on
the strbuf series that was in next, but is now in master.
It no longer compiles on its own without the strbuf API.

* master: (184 commits)
  Whip post 1.5.3.4 maintenance series into shape.
  Minor usage update in setgitperms.perl
  manual: use 'URL' instead of 'url'.
  manual: add some markup.
  manual: Fix example finding commits referencing given content.
  Fix wording in push definition.
  Fix some typos, punctuation, missing words, minor markup.
  manual: Fix or remove em dashes.
  Add a --dry-run option to git-push.
  Add a --dry-run option to git-send-pack.
  Fix in-place editing functions in convert.c
  instaweb: support for Ruby's WEBrick server
  instaweb: allow for use of auto-generated scripts
  Add 'git-p4 commit' as an alias for 'git-p4 submit'
  hg-to-git speedup through selectable repack intervals
  git-svn: respect Subversion's [auth] section configuration values
  gtksourceview2 support for gitview
  fix contrib/hooks/post-receive-email hooks.recipients error message
  Support cvs via git-shell
  rebase -i: use diff plumbing instead of porcelain
  ...

Conflicts:

	Makefile
	builtin-push.c
	rsh.c
2007-10-16 00:15:25 -04:00

377 lines
8.9 KiB
Bash
Executable file

#!/bin/sh
#
USAGE='<fetch-options> <repository> <refspec>...'
SUBDIRECTORY_OK=Yes
. git-sh-setup
set_reflog_action "fetch $*"
cd_to_toplevel ;# probably unnecessary...
. git-parse-remote
_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
LF='
'
IFS="$LF"
no_tags=
tags=
append=
force=
verbose=
update_head_ok=
exec=
keep=
shallow_depth=
no_progress=
test -t 1 || no_progress=--no-progress
quiet=
while test $# != 0
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="--upload-pack=$1"
;;
--upl=*|--uplo=*|--uploa=*|--upload=*|\
--upload-=*|--upload-p=*|--upload-pa=*|--upload-pac=*|--upload-pack=*)
exec=--upload-pack=$(expr "z$1" : 'z-[^=]*=\(.*\)')
shift
;;
-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
;;
-q|--q|--qu|--qui|--quie|--quiet)
quiet=--quiet
;;
-v|--verbose)
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 $origin ; shift ;;
esac
if test -z "$exec"
then
# No command line override and we have configuration for the remote.
exec="--upload-pack=$(get_uploadpack $1)"
fi
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 $exec "$remote") ||
die "Cannot get the repository state from $remote"
append_fetch_head () {
flags=
test -n "$verbose" && flags="$flags$LF-v"
test -n "$force$single_force" && flags="$flags$LF-f"
GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION" \
git fetch--tool $flags append-fetch-head "$@"
}
# updating the current HEAD with git-fetch in a bare
# repository is always fine.
if test -z "$update_head_ok" && test $(is_bare_repository) = false
then
orig_head=$(git rev-parse --verify HEAD 2>/dev/null)
fi
# Allow --notags from remote.$1.tagopt
case "$tags$no_tags" in
'')
case "$(git config --get "remote.$1.tagopt")" in
--no-tags)
no_tags=t ;;
esac
esac
# If --tags (and later --heads or --all) is specified, then we are
# not talking about defaults stored in Pull: line of remotes or
# branches file, and just fetch those and refspecs explicitly given.
# Otherwise we do what we always did.
reflist=$(get_remote_refs_for_fetch "$@")
if test "$tags"
then
taglist=`IFS=' ' &&
echo "$ls_remote_result" |
git show-ref --exclude-existing=refs/tags/ |
while read sha1 name
do
echo ".${name}:${name}"
done` || exit
if test "$#" -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_all_at_once () {
eval=$(echo "$1" | git fetch--tool parse-reflist "-")
eval "$eval"
( : subshell because we muck with IFS
IFS=" $LF"
(
if test "$remote" = . ; then
git show-ref $rref || echo failed "$remote"
elif test -f "$remote" ; then
test -n "$shallow_depth" &&
die "shallow clone with bundle is not supported"
git bundle unbundle "$remote" $rref ||
echo failed "$remote"
else
if test -d "$remote" &&
# The remote might be our alternate. With
# this optimization we will bypass fetch-pack
# altogether, which means we cannot be doing
# the shallow stuff at all.
test ! -f "$GIT_DIR/shallow" &&
test -z "$shallow_depth" &&
# See if all of what we are going to fetch are
# connected to our repository's tips, in which
# case we do not have to do any fetch.
theirs=$(echo "$ls_remote_result" | \
git fetch--tool -s pick-rref "$rref" "-") &&
# This will barf when $theirs reach an object that
# we do not have in our repository. Otherwise,
# we already have everything the fetch would bring in.
git rev-list --objects $theirs --not --all \
>/dev/null 2>/dev/null
then
echo "$ls_remote_result" | \
git fetch--tool pick-rref "$rref" "-"
else
flags=
case $verbose in
YesYes*)
flags="-v"
;;
esac
git-fetch-pack --thin $exec $keep $shallow_depth \
$quiet $no_progress $flags "$remote" $rref ||
echo failed "$remote"
fi
fi
) |
(
flags=
test -n "$verbose" && flags="$flags -v"
test -n "$force" && flags="$flags -f"
GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION" \
git fetch--tool $flags native-store \
"$remote" "$remote_nick" "$refs"
)
) || exit
}
fetch_per_ref () {
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 config --bool http.noEPSV`" = true ]; then
noepsv_opt="--disable-epsv"
fi
# Find $remote_name from ls-remote output.
head=$(echo "$ls_remote_result" | \
git fetch--tool -s pick-rref "$remote_name" "-")
expr "z$head" : "z$_x40\$" >/dev/null ||
die "No such ref $remote_name at $remote"
echo >&2 "Fetching $remote_name from $remote using $proto"
case "$quiet" in '') v=-v ;; *) v= ;; esac
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"
case "$quiet" in '') v=-v ;; *) v= ;; esac
test "$rsync_slurped_objects" || {
rsync -a $v --ignore-existing --exclude info \
"$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
}
;;
esac
append_fetch_head "$head" "$remote" \
"$remote_name" "$remote_nick" "$local_name" "$not_for_merge" || exit
done
}
fetch_main () {
case "$remote" in
http://* | https://* | ftp://* | rsync://* )
fetch_per_ref "$@"
;;
*)
fetch_all_at_once "$@"
;;
esac
}
fetch_main "$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