refs.c: fix fread error handling
[git] / 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