git-rebase--merge.sh

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