am: drop "dir" parameter from am_state_init
[git] / git-rebase--am.sh
1 # This shell script fragment is sourced by git-rebase to implement
2 # its default, fast, patch-based, non-interactive mode.
3 #
4 # Copyright (c) 2010 Junio C Hamano.
5 #
6
7 # The whole contents of this file is run by dot-sourcing it from
8 # inside a shell function.  It used to be that "return"s we see
9 # below were not inside any function, and expected to return
10 # to the function that dot-sourced us.
11 #
12 # However, older (9.x) versions of FreeBSD /bin/sh misbehave on such a
13 # construct and continue to run the statements that follow such a "return".
14 # As a work-around, we introduce an extra layer of a function
15 # here, and immediately call it after defining it.
16 git_rebase__am () {
17
18 case "$action" in
19 continue)
20         git am --resolved --resolvemsg="$resolvemsg" \
21                 ${gpg_sign_opt:+"$gpg_sign_opt"} &&
22         move_to_original_branch
23         return
24         ;;
25 skip)
26         git am --skip --resolvemsg="$resolvemsg" &&
27         move_to_original_branch
28         return
29         ;;
30 esac
31
32 if test -z "$rebase_root"
33         # this is now equivalent to ! -z "$upstream"
34 then
35         revisions=$upstream...$orig_head
36 else
37         revisions=$onto...$orig_head
38 fi
39
40 ret=0
41 if test -n "$keep_empty"
42 then
43         # we have to do this the hard way.  git format-patch completely squashes
44         # empty commits and even if it didn't the format doesn't really lend
45         # itself well to recording empty patches.  fortunately, cherry-pick
46         # makes this easy
47         git cherry-pick ${gpg_sign_opt:+"$gpg_sign_opt"} --allow-empty \
48                 --right-only "$revisions" \
49                 ${restrict_revision+^$restrict_revision}
50         ret=$?
51 else
52         rm -f "$GIT_DIR/rebased-patches"
53
54         git format-patch -k --stdout --full-index --cherry-pick --right-only \
55                 --src-prefix=a/ --dst-prefix=b/ --no-renames --no-cover-letter \
56                 "$revisions" ${restrict_revision+^$restrict_revision} \
57                 >"$GIT_DIR/rebased-patches"
58         ret=$?
59
60         if test 0 != $ret
61         then
62                 rm -f "$GIT_DIR/rebased-patches"
63                 case "$head_name" in
64                 refs/heads/*)
65                         git checkout -q "$head_name"
66                         ;;
67                 *)
68                         git checkout -q "$orig_head"
69                         ;;
70                 esac
71
72                 cat >&2 <<-EOF
73
74                 git encountered an error while preparing the patches to replay
75                 these revisions:
76
77                     $revisions
78
79                 As a result, git cannot rebase them.
80                 EOF
81                 return $ret
82         fi
83
84         git am $git_am_opt --rebasing --resolvemsg="$resolvemsg" \
85                 ${gpg_sign_opt:+"$gpg_sign_opt"} <"$GIT_DIR/rebased-patches"
86         ret=$?
87
88         rm -f "$GIT_DIR/rebased-patches"
89 fi
90
91 if test 0 != $ret
92 then
93         test -d "$state_dir" && write_basic_state
94         return $ret
95 fi
96
97 move_to_original_branch
98
99 }
100 # ... and then we call the whole thing.
101 git_rebase__am