tg-depend.sh

   1 #!/bin/sh
   2 # TopGit - A different patch queue manager
   3 # (c) Petr Baudis <pasky@suse.cz>  2008
   4 # GPLv2
   5
   6 name=
   7
   8
   9 usage()
  10 {
  11     echo "Usage: tg [...] depend add NAME" >&2
  12     exit 1
  13 }
  14
  15 ## Parse options
  16
  17 subcmd="$1"; shift || :
  18 case "$subcmd" in
  19         -h|"")
  20                 usage;;
  21         add)
  22                 ;;
  23         *)
  24                 die "unknown subcommand ($subcmd)";;
  25 esac
  26
  27 while [ -n "$1" ]; do
  28         arg="$1"; shift
  29         case "$arg" in
  30         -*)
  31                 usage;;
  32         *)
  33                 [ -z "$name" ] || die "name already specified ($name)"
  34                 name="$arg";;
  35         esac
  36 done
  37
  38
  39 ## Sanity checks
  40
  41 [ -n "$name" ] || die "no branch name specified"
  42 branchrev="$(git rev-parse --verify "$name" 2>/dev/null)" ||
  43         die "invalid branch name: $name"
  44
  45 # Check that we are on a TopGit branch.
  46 current_name="$(git symbolic-ref HEAD | sed 's#^refs/\(heads\|top-bases\)/##')"
  47 current_base_rev="$(git rev-parse --short --verify "refs/top-bases/$current_name" 2>/dev/null)" ||
  48         die "not a TopGit-controlled branch"
  49
  50 ## Record new dependency
  51 depend_add()
  52 {
  53         [ "$name" = "$current_name" ] &&
  54                 die "$name cannot depend on itself."
  55
  56         { $tg summary --deps; echo "$current_name" "$name"; } |
  57                 tsort >/dev/null ||
  58                 die "tg: that dependency would introduce a dependency loop"
  59
  60         grep -F -x -e "$name" "$root_dir/.topdeps" >/dev/null &&
  61                 die "tg: $current_name already depends on $name"
  62
  63         echo "$name" >>"$root_dir/.topdeps"
  64         git add -f "$root_dir/.topdeps"
  65         git commit -m"New TopGit dependency: $name"
  66         $tg update
  67 }
  68
  69 depend_$subcmd
  70
  71 # vim:noet