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: 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/top-bases/*:refs/remotes/$name/top-bases/*" "\\+refs/top-bases/\\*:refs/remotes/$name/top-bases/\\*"
  34
  35 if git config --get-all "remote.$name.push" "\\+refs/top-bases/\\*:refs/top-bases/\\*" >/dev/null && test "xtrue" != "x$(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.'$name'.push" "\\+refs/top-bases/\\*:refs/top-bases/\\*"'
  38         info '       git config --unset-all "remote.'$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 ## top-bases 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/top-bases/XX" reverse
  57 ## lookup as a non-exist "refs/heads/top-bases/XX", and  would be
  58 ## deleted by accident.
  59 git fetch --prune "$name" \
  60         "+refs/top-bases/*:refs/remotes/$name/top-bases/*" \
  61         "+refs/heads/*:refs/remotes/$name/*"
  62
  63 git for-each-ref "refs/remotes/$name/top-bases" |
  64         while read rev type ref; do
  65                 branch="${ref#refs/remotes/$name/top-bases/}"
  66                 if ! git rev-parse "refs/remotes/$name/$branch" >/dev/null 2>&1; then
  67                         info "Skipping remote $name/top-bases/$branch that's missing its branch"
  68                         continue
  69                 fi
  70                 if git rev-parse "$branch" >/dev/null 2>&1; then
  71                         git rev-parse "refs/top-bases/$branch" >/dev/null 2>&1 ||
  72                                 git update-ref "refs/top-bases/$branch" "$rev"
  73                         info "Skipping branch $branch: Already exists"
  74                         continue
  75                 fi
  76                 info "Adding branch $branch..."
  77                 git update-ref "refs/top-bases/$branch" "$rev"
  78                 git update-ref "refs/heads/$branch" "$(git rev-parse "$name/$branch")"
  79         done
  80
  81 git config "topgit.remote" "$name"
  82 info "The remote '$name' is now the default source of topic branches."
  83
  84 # vim:noet