xref: /aosp_15_r20/external/regex-re2/lib/git/commit-msg.hook (revision ccdc9c3e24c519bfa4832a66aa2e83a52c19f295)
1 #!/bin/sh
2 # From Gerrit Code Review 2.2.1
3 #
4 # Part of Gerrit Code Review (http://code.google.com/p/gerrit/)
5 #
6 # Copyright (C) 2009 The Android Open Source Project
7 #
8 # Licensed under the Apache License, Version 2.0 (the "License");
9 # you may not use this file except in compliance with the License.
10 # You may obtain a copy of the License at
11 #
12 # http://www.apache.org/licenses/LICENSE-2.0
13 #
14 # Unless required by applicable law or agreed to in writing, software
15 # distributed under the License is distributed on an "AS IS" BASIS,
16 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 # See the License for the specific language governing permissions and
18 # limitations under the License.
19 #
20 
21 CHANGE_ID_AFTER="Bug|Issue"
22 MSG="$1"
23 
24 # Check for, and add if missing, a unique Change-Id
25 #
26 add_ChangeId() {
27 	clean_message=`sed -e '
28 		/^diff --git a\/.*/{
29 			s///
30 			q
31 		}
32 		/^Signed-off-by:/d
33 		/^#/d
34 	' "$MSG" | git stripspace`
35 	if test -z "$clean_message"
36 	then
37 		return
38 	fi
39 
40 	if grep -i '^Change-Id:' "$MSG" >/dev/null
41 	then
42 		return
43 	fi
44 
45 	id=`_gen_ChangeId`
46 	perl -e '
47 		$MSG = shift;
48 		$id = shift;
49 		$CHANGE_ID_AFTER = shift;
50 
51 		undef $/;
52 		open(I, $MSG); $_ = <I>; close I;
53 		s|^diff --git a/.*||ms;
54 		s|^#.*$||mg;
55 		exit unless $_;
56 
57 		@message = split /\n/;
58 		$haveFooter = 0;
59 		$startFooter = @message;
60 		for($line = @message - 1; $line >= 0; $line--) {
61 			$_ = $message[$line];
62 
63 			if (/^[a-zA-Z0-9-]+:/ && !m,^[a-z0-9-]+://,) {
64 				$haveFooter++;
65 				next;
66 			}
67 			next if /^[ []/;
68 			$startFooter = $line if ($haveFooter && /^\r?$/);
69 			last;
70 		}
71 
72 		@footer = @message[$startFooter+1..@message];
73 		@message = @message[0..$startFooter];
74 		push(@footer, "") unless @footer;
75 
76 		for ($line = 0; $line < @footer; $line++) {
77 			$_ = $footer[$line];
78 			next if /^($CHANGE_ID_AFTER):/i;
79 			last;
80 		}
81 		splice(@footer, $line, 0, "Change-Id: I$id");
82 
83 		$_ = join("\n", @message, @footer);
84 		open(O, ">$MSG"); print O; close O;
85 	' "$MSG" "$id" "$CHANGE_ID_AFTER"
86 }
87 _gen_ChangeIdInput() {
88 	echo "tree `git write-tree`"
89 	if parent=`git rev-parse HEAD^0 2>/dev/null`
90 	then
91 		echo "parent $parent"
92 	fi
93 	echo "author `git var GIT_AUTHOR_IDENT`"
94 	echo "committer `git var GIT_COMMITTER_IDENT`"
95 	echo
96 	printf '%s' "$clean_message"
97 }
98 _gen_ChangeId() {
99 	_gen_ChangeIdInput |
100 	git hash-object -t commit --stdin
101 }
102 
103 
104 add_ChangeId
105