git-rebase--merge.sh

   1 # This shell script fragment is sourced by git-rebase to implement
   2 # its merge-based non-interactive mode that copes well with renamed
   3 # files.
   4 #
   5 # Copyright (c) 2010 Junio C Hamano.
   6 #
   7
   8 prec=4
   9
  10 read_state () {
  11         onto_name=$(cat "$state_dir"/onto_name) &&
  12         end=$(cat "$state_dir"/end) &&
  13         msgnum=$(cat "$state_dir"/msgnum)
  14 }
  15
  16 continue_merge () {
  17         test -d "$state_dir" || die "$state_dir directory does not exist"
  18
  19         unmerged=$(git ls-files -u)
  20         if test -n "$unmerged"
  21         then
  22                 echo "You still have unmerged paths in your index"
  23                 echo "did you forget to use git add?"
  24                 die "$resolvemsg"
  25         fi
  26
  27         cmt=`cat "$state_dir/current"`
  28         if ! git diff-index --quiet --ignore-submodules HEAD --
  29         then
  30                 if ! git commit --no-verify -C "$cmt"
  31                 then
  32                         echo "Commit failed, please do not call \"git commit\""
  33                         echo "directly, but instead do one of the following: "
  34                         die "$resolvemsg"
  35                 fi
  36                 if test -z "$GIT_QUIET"
  37                 then
  38                         printf "Committed: %0${prec}d " $msgnum
  39                 fi
  40                 echo "$cmt $(git rev-parse HEAD^0)" >> "$state_dir/rewritten"
  41         else
  42                 if test -z "$GIT_QUIET"
  43                 then
  44                         printf "Already applied: %0${prec}d " $msgnum
  45                 fi
  46         fi
  47         test -z "$GIT_QUIET" &&
  48         GIT_PAGER='' git log --format=%s -1 "$cmt"
  49
  50         # onto the next patch:
  51         msgnum=$(($msgnum + 1))
  52         echo "$msgnum" >"$state_dir/msgnum"
  53 }
  54
  55 call_merge () {
  56         cmt="$(cat "$state_dir/cmt.$1")"
  57         echo "$cmt" > "$state_dir/current"
  58         hd=$(git rev-parse --verify HEAD)
  59         cmt_name=$(git symbolic-ref HEAD 2> /dev/null || echo HEAD)
  60         msgnum=$(cat "$state_dir/msgnum")
  61         eval GITHEAD_$cmt='"${cmt_name##refs/heads/}~$(($end - $msgnum))"'
  62         eval GITHEAD_$hd='$onto_name'
  63         export GITHEAD_$cmt GITHEAD_$hd
  64         if test -n "$GIT_QUIET"
  65         then
  66                 GIT_MERGE_VERBOSITY=1 && export GIT_MERGE_VERBOSITY
  67         fi
  68         test -z "$strategy" && strategy=recursive
  69         eval 'git-merge-$strategy' $strategy_opts '"$cmt^" -- "$hd" "$cmt"'
  70         rv=$?
  71         case "$rv" in
  72         0)
  73                 unset GITHEAD_$cmt GITHEAD_$hd
  74                 return
  75                 ;;
  76         1)
  77                 git rerere $allow_rerere_autoupdate
  78                 die "$resolvemsg"
  79                 ;;
  80         2)
  81                 echo "Strategy: $strategy failed, try another" 1>&2
  82                 die "$resolvemsg"
  83                 ;;
  84         *)
  85                 die "Unknown exit code ($rv) from command:" \
  86                         "git-merge-$strategy $cmt^ -- HEAD $cmt"
  87                 ;;
  88         esac
  89 }
  90
  91 finish_rb_merge () {
  92         move_to_original_branch
  93         if test -s "$state_dir"/rewritten
  94         then
  95                 git notes copy --for-rewrite=rebase <"$state_dir"/rewritten
  96                 if test -x "$GIT_DIR"/hooks/post-rewrite
  97                 then
  98                         "$GIT_DIR"/hooks/post-rewrite rebase <"$state_dir"/rewritten
  99                 fi
 100         fi
 101         say All done.
 102 }
 103
 104 case "$action" in
 105 continue)
 106         read_state
 107         continue_merge
 108         while test "$msgnum" -le "$end"
 109         do
 110                 call_merge "$msgnum"
 111                 continue_merge
 112         done
 113         finish_rb_merge
 114         return
 115         ;;
 116 skip)
 117         read_state
 118         git rerere clear
 119         msgnum=$(($msgnum + 1))
 120         while test "$msgnum" -le "$end"
 121         do
 122                 call_merge "$msgnum"
 123                 continue_merge
 124         done
 125         finish_rb_merge
 126         return
 127         ;;
 128 esac
 129
 130 mkdir -p "$state_dir"
 131 echo "$onto_name" > "$state_dir/onto_name"
 132 write_basic_state
 133
 134 msgnum=0
 135 for cmt in `git rev-list --reverse --no-merges "$revisions"`
 136 do
 137         msgnum=$(($msgnum + 1))
 138         echo "$cmt" > "$state_dir/cmt.$msgnum"
 139 done
 140
 141 echo 1 >"$state_dir/msgnum"
 142 echo $msgnum >"$state_dir/end"
 143
 144 end=$msgnum
 145 msgnum=1
 146
 147 while test "$msgnum" -le "$end"
 148 do
 149         call_merge "$msgnum"
 150         continue_merge
 151 done
 152
 153 finish_rb_merge