tg-remote.sh

   1 #!/bin/sh
   2 # TopGit - A different patch queue manager
   3 # (c) Petr Baudis <pasky@suse.cz>  2008
   4 # GPLv2
   5
   6 populate= # Set to 1 if we shall seed local branches with this
   7 name=
   8
   9
  10 ## Parse options
  11
  12 while [ -n "$1" ]; do
  13         arg="$1"; shift
  14         case "$arg" in
  15         --populate)
  16                 populate=1;;
  17         -*)
  18                 echo "Usage: ${tgname:-tg} [...] remote [--populate] [<remote>]" >&2
  19                 exit 1;;
  20         *)
  21                 name="$arg";;
  22         esac
  23 done
  24
  25 [ -n "$name" ] ||
  26         name="$base_remote"
  27
  28 git config "remote.$name.url" >/dev/null || die "unknown remote '$name'"
  29
  30
  31 ## Configure the remote
  32
  33 git config --replace-all "remote.$name.fetch" "+refs/$topbases/*:refs/remotes/$name/$topbases/*" "\\+refs/$topbases/\\*:refs/remotes/$name/$topbases/\\*"
  34
  35 if git config --get-all "remote.$name.push" "\\+refs/$topbases/\\*:refs/$topbases/\\*" >/dev/null && test "xtrue" != "x$(git config --bool --get topgit.dontwarnonoldpushspecs)"; then
  36         info "Probably you want to remove the push specs introduced by an old version of topgit:"
  37         info '       git config --unset-all "remote.'"$name"'.push" "\\+refs/'"$topbases"'/\\*:refs/'"$topbases"'/\\*"'
  38         info '       git config --unset-all "remote.'"$name"'.push" "\\+refs/heads/\\*:refs/heads/\\*"'
  39         info '(or use git config --bool --add topgit.dontwarnonoldpushspecs true to get rid of this warning)'
  40 fi
  41
  42 info "Remote $name can now follow TopGit topic branches."
  43 if [ -z "$populate" ]; then
  44         info "Next, do: git fetch $name"
  45         exit
  46 fi
  47
  48
  49 ## Populate local branches
  50
  51 info "Populating local topic branches from remote '$name'..."
  52
  53 ## The order of refspecs is very important, because both heads and
  54 ## $topbases are mapped under the same namespace refs/remotes/$name.
  55 ## If we put the 2nd refspec before the 1st one, stale refs reverse
  56 ## lookup would fail and "refs/remotes/$name/$topbases/XX" reverse
  57 ## lookup as a non-exist "refs/heads/$topbases/XX", and would be
  58 ## deleted by accident.
  59 git fetch --prune "$name" \
  60         "+refs/$topbases/*:refs/remotes/$name/$topbases/*" \
  61         "+refs/heads/*:refs/remotes/$name/*"
  62
  63 git for-each-ref --format='%(objectname) %(refname)' "refs/remotes/$name/$topbases" |
  64         while read rev ref; do
  65                 branch="${ref#refs/remotes/$name/$topbases/}"
  66                 if ! git rev-parse --verify "refs/remotes/$name/$branch" -- >/dev/null 2>&1; then
  67                         info "Skipping remote $name/$topbases/$branch that's missing its branch"
  68                         continue
  69                 fi
  70                 if git rev-parse --verify "refs/heads/$branch" -- >/dev/null 2>&1; then
  71                         git rev-parse --verify "refs/$topbases/$branch" -- >/dev/null 2>&1 || {
  72                                 init_reflog "refs/$topbases/$branch"
  73                                 git update-ref "refs/$topbases/$branch" "$rev"
  74                         }
  75                         info "Skipping branch $branch: Already exists"
  76                         continue
  77                 fi
  78                 info "Adding branch $branch..."
  79                 init_reflog "refs/$topbases/$branch"
  80                 git update-ref "refs/$topbases/$branch" "$rev"
  81                 git update-ref "refs/heads/$branch" "$(git rev-parse --verify "$name/$branch" --)"
  82         done
  83
  84 git config "topgit.remote" "$name"
  85 info "The remote '$name' is now the default source of topic branches."
  86
  87 # vim:noet