tg-delete.sh

   1 #!/bin/sh
   2 # TopGit - A different patch queue manager
   3 # (c) Petr Baudis <pasky@suse.cz>  2008
   4 # GPLv2
   5
   6 force= # Whether to delete non-empty branch, or branch where only the base is left.
   7 name=
   8
   9
  10 ## Parse options
  11
  12 while [ -n "$1" ]; do
  13         arg="$1"; shift
  14         case "$arg" in
  15         -f|--force)
  16                 force=$(( $force +1 ));;
  17         -*)
  18                 echo "Usage: ${tgname:-tg} [...] delete [-f] <name>" >&2
  19                 exit 1;;
  20         *)
  21                 [ -z "$name" ] || die "name already specified ($name)"
  22                 name="$arg";;
  23         esac
  24 done
  25
  26
  27 ## Sanity checks
  28
  29 [ -n "$name" ] || die "no branch name specified"
  30 branchrev="$(git rev-parse --verify "refs/heads/$name" -- 2>/dev/null)" ||
  31         if [ -n "$force" ]; then
  32                 info "invalid branch name: $name; assuming it has been deleted already"
  33         else
  34                 die "invalid branch name: $name"
  35         fi
  36 baserev="$(git rev-parse --verify "refs/$topbases/$name" -- 2>/dev/null)" ||
  37         die "not a TopGit topic branch: $name"
  38 ! headsym="$(git symbolic-ref -q HEAD)" || [ "$headsym" != "refs/heads/$name" ] || {
  39         [ -n "$force" ] && [ "$force" -ge 2 ] || die "cannot delete your current branch"
  40         warn "detaching HEAD to delete current branch"
  41         git update-ref -m "tgdelete: detach HEAD to delete $name" --no-deref HEAD "$branchrev"
  42         git log -n 1 --format=format:'HEAD is now at %h... %s' HEAD
  43 }
  44
  45 [ -z "$force" ] && { branch_empty "$name" || die "branch is non-empty: $name"; }
  46
  47 # Quick'n'dirty check whether branch is required
  48 [ -z "$force" ] && { $tg summary --deps | cut -d' ' -f2- | tr ' ' '\n' | LC_ALL=C grep -Fxq -- "$name" && die "some branch depends on $name"; }
  49
  50 ## Wipe out
  51
  52 git update-ref -d "refs/$topbases/$name" "$baserev"
  53 [ -z "$branchrev" ] || git update-ref -d "refs/heads/$name" "$branchrev"
  54
  55 # vim:noet