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="$1"; shift || :
  17 case "$subcmd" in
  18         -h|"")
  19                 usage;;
  20         add)
  21                 ;;
  22         *)
  23                 die "unknown subcommand ($subcmd)";;
  24 esac
  25
  26 while [ -n "$1" ]; do
  27         arg="$1"; shift
  28         case "$arg" in
  29         -*)
  30                 usage;;
  31         *)
  32                 [ -z "$name" ] || die "name already specified ($name)"
  33                 name="$arg";;
  34         esac
  35 done
  36
  37
  38 ## Sanity checks
  39
  40 [ -n "$name" ] || die "no branch name specified"
  41 branchrev="$(git rev-parse --verify "$name" 2>/dev/null)" ||
  42         die "invalid branch name: $name"
  43
  44 # Check that we are on a TopGit branch.
  45 current_name="$(strip_ref "$(git symbolic-ref HEAD 2>/dev/null)")"
  46 current_base_rev="$(git rev-parse --short --verify "refs/top-bases/$current_name" 2>/dev/null)" ||
  47         die "not a TopGit-controlled branch"
  48
  49 ## Record new dependency
  50 depend_add()
  51 {
  52         [ "$name" = "$current_name" ] &&
  53                 die "$name cannot depend on itself."
  54
  55         { $tg summary --deps; echo "$current_name" "$name"; } |
  56                 tsort >/dev/null ||
  57                 die "$tgname: that dependency would introduce a dependency loop"
  58
  59         grep -F -x -e "$name" "$root_dir/.topdeps" >/dev/null &&
  60                 die "$tgname: $current_name already depends on $name"
  61
  62         echo "$name" >>"$root_dir/.topdeps"
  63         git add -f "$root_dir/.topdeps"
  64         git commit -m"New TopGit dependency: $name"
  65         $tg update
  66 }
  67
  68 depend_$subcmd
  69
  70 # vim:noet