git-fetch: auto-following tags.
I added things to ls-remote so that Cogito can auto-follow tags
easily and correctly a while ago, but git-fetch did not use the
facility. Recently added git-describe command relies on
repository keeping up-to-date set of tags, which made it much
more attractive to automatically follow tags, so we do that as
well.
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/git-fetch.sh b/git-fetch.sh
index b46b3e5..73e57bd 100755
--- a/git-fetch.sh
+++ b/git-fetch.sh
@@ -11,6 +11,7 @@
'
IFS="$LF"
+no_tags=
tags=
append=
force=
@@ -28,6 +29,9 @@
-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)
@@ -212,133 +216,166 @@
fi
fi
-for ref in $reflist
-do
- refs="$refs$LF$ref"
+fetch_main () {
+ reflist="$1"
+ refs=
- # 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" : '[^:]*:\(.*\)')
+ for ref in $reflist
+ do
+ refs="$refs$LF$ref"
- rref="$rref$LF$remote_name"
+ # 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" : '[^:]*:\(.*\)')
- # 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
+ rref="$rref$LF$remote_name"
- # Look at objects/info/alternates for rsync -- http will
- # support it natively and git native ones will do it on the remote
- # end. Not having that file is not a crime.
- rsync -q "$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
+ # 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
- append_fetch_head "$head" "$remote" \
- "$remote_name" "$remote_nick" "$local_name" "$not_for_merge"
+ # 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
-done
+ append_fetch_head "$head" "$remote" \
+ "$remote_name" "$remote_nick" "$local_name" "$not_for_merge"
-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 $refs
+ done
+
+ case "$remote" in
+ http://* | https://* | rsync://* )
+ ;; # we are already done.
+ *)
+ ( : subshell because we muck with IFS
+ 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
+
+}
+
+fetch_main "$reflist"
+
+# automated tag following
+case "$no_tags$tags" in
+'')
+ taglist=$(IFS=" " &&
+ git-ls-remote --tags "$remote" |
+ sed -ne 's|^\([0-9a-f]*\)[ ]\(refs/tags/.*\)^{}$|\1 \2|p' |
+ while read sha1 name
do
- case "$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
- ;;
+ 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}:${name}"
+ done)
+ case "$taglist" in
+ '') ;;
+ ?*)
+ fetch_main "$taglist" ;;
+ esac
esac
# If the original head was empty (i.e. no "master" yet), or
