tg-depend.sh

   1 #!/bin/sh
   2 # TopGit - A different patch queue manager
   3 # Copyright (C) Petr Baudis <pasky@suse.cz>  2008
   4 # Copyright (C) Kyle J. McKay <mackyle@gmail.com>  2015
   5 # All rights reserved.
   6 # GPLv2
   7
   8 USAGE="Usage: ${tgname:-tg} [...] depend add [--no-update | --no-commit] <name>"
   9
  10 name=
  11
  12 usage()
  13 {
  14         printf '%s\n' "$USAGE" >&2
  15         exit 1
  16 }
  17
  18 ## Parse options
  19
  20 subcmd="$1"
  21 case "$subcmd" in
  22         -h|--help|"")
  23                 usage;;
  24         add)
  25                 ;;
  26         *)
  27                 die "unknown subcommand ($subcmd)";;
  28 esac
  29 shift
  30
  31 noupdate=
  32 nocommit=
  33 while [ -n "$1" ]; do
  34         arg="$1"; shift
  35         case "$arg" in
  36         --no-update)
  37                 noupdate=1;;
  38         --no-commit)
  39                 nocommit=1;;
  40         -*)
  41                 usage;;
  42         *)
  43                 [ -z "$name" ] || die "name already specified ($name)"
  44                 name="$arg";;
  45         esac
  46 done
  47
  48
  49 ## Sanity checks
  50
  51 [ -n "$name" ] || die "no branch name specified"
  52 branchrev="$(git rev-parse --verify "refs/heads/$name" -- 2>/dev/null)" ||
  53         die "invalid branch name: $name"
  54
  55 # Check that we are on a TopGit branch.
  56 current_name="$(verify_topgit_branch HEAD)"
  57
  58 ## Record new dependency
  59 depend_add()
  60 {
  61         [ "$name" = "$current_name" ] &&
  62                 die "$name cannot depend on itself."
  63
  64         { $tg summary --deps; echo "$current_name" "$name"; } |
  65                 tsort >/dev/null ||
  66                 die "$tgname: that dependency would introduce a dependency loop"
  67
  68         grep -F -x -e "$name" "$root_dir/.topdeps" >/dev/null &&
  69                 die "$tgname: $current_name already depends on $name"
  70
  71         [ -n "$nocommit" ] || ensure_ident_available
  72         echol "$name" >>"$root_dir/.topdeps"
  73         git add -f "$root_dir/.topdeps"
  74         msg=".topdeps: add new dependency $name"
  75         [ -z "$nocommit" ] || {
  76                 [ -s "$git_dir/MERGE_MSG" ] || printf '%s\n' "$msg" >"$git_dir/MERGE_MSG"
  77                 info "added new dependency $name to .topdeps and staged it"
  78                 info "run \`git commit\` then \`tg update\` to complete addition"
  79                 exit 0
  80         }
  81         git commit -m "$msg" "$root_dir/.topdeps"
  82         [ -z "$noupdate" ] || {
  83                 info "be sure to run \`tg update\` at some point"
  84                 exit 0
  85         }
  86         (ensure_clean_tree) || {
  87                 warn "skipping needed \`tg update\` since worktree is dirty"
  88                 warn "be sure to run \`tg update\` when worktree is clean"
  89                 exit 1
  90         }
  91         $tg update
  92 }
  93
  94 depend_$subcmd
  95
  96 # vim:noet