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 usage()
   9 {
  10         echo "Usage: ${tgname:-tg} [...] depend add <name>" >&2
  11         exit 1
  12 }
  13
  14 ## Parse options
  15
  16 subcmd="$1"
  17 case "$subcmd" in
  18         -h|"")
  19                 usage;;
  20         add)
  21                 ;;
  22         *)
  23                 die "unknown subcommand ($subcmd)";;
  24 esac
  25 shift
  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: $name"
  44
  45 # Check that we are on a TopGit branch.
  46 current_name="$(strip_ref "$(git symbolic-ref HEAD 2>/dev/null)")"
  47 current_base_rev="$(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" "$name"; } |
  57                 tsort >/dev/null ||
  58                 die "$tgname: that dependency would introduce a dependency loop"
  59
  60         grep -F -x -e "$name" "$root_dir/.topdeps" >/dev/null &&
  61                 die "$tgname: $current_name already depends on $name"
  62
  63         echo "$name" >>"$root_dir/.topdeps"
  64         git add -f "$root_dir/.topdeps"
  65         git commit -m ".topdeps: add new dependency $name"
  66         $tg update
  67 }
  68
  69 depend_$subcmd
  70
  71 # vim:noet