aboutsummaryrefslogtreecommitdiff
path: root/git-request-pull.sh
blob: eebd33276da9028afa1f2ed3b03e60f037d7e646 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
#!/bin/sh
# Copyright 2005, Ryan Anderson <ryan@michonline.com>
#
# This file is licensed under the GPL v2, or a later version
# at the discretion of Linus Torvalds.

SUBDIRECTORY_OK='Yes'
OPTIONS_KEEPDASHDASH=
OPTIONS_STUCKLONG=
OPTIONS_SPEC='git request-pull [options] start url [end]
--
p    show patch text as well
'

. git-sh-setup

GIT_PAGER=
export GIT_PAGER

patch=
while	case "$#" in 0) break ;; esac
do
	case "$1" in
	-p)
		patch=-p ;;
	--)
		shift; break ;;
	-*)
		usage ;;
	*)
		break ;;
	esac
	shift
done

base=$1 url=$2 status=0

test -n "$base" && test -n "$url" || usage

baserev=$(git rev-parse --verify --quiet "$base"^0)
if test -z "$baserev"
then
    die "fatal: Not a valid revision: $base"
fi

#
# $3 must be a symbolic ref, a unique ref, or
# a SHA object expression. It can also be of
# the format 'local-name:remote-name'.
#
local=${3%:*}
local=${local:-HEAD}
remote=${3#*:}
pretty_remote=${remote#refs/}
pretty_remote=${pretty_remote#heads/}
head=$(git symbolic-ref -q "$local")
head=${head:-$(git show-ref --heads --tags "$local" | cut -d' ' -f2)}
head=${head:-$(git rev-parse --quiet --verify "$local")}

# None of the above? Bad.
test -z "$head" && die "fatal: Not a valid revision: $local"

# This also verifies that the resulting head is unique:
# "git show-ref" could have shown multiple matching refs..
headrev=$(git rev-parse --verify --quiet "$head"^0)
test -z "$headrev" && die "fatal: Ambiguous revision: $local"

# Was it a branch with a description?
branch_name=${head#refs/heads/}
if test "z$branch_name" = "z$headref" ||
	! git config "branch.$branch_name.description" >/dev/null
then
	branch_name=
fi

merge_base=$(git merge-base $baserev $headrev) ||
die "fatal: No commits in common between $base and $head"

# $head is the refname from the command line.
# If a ref with the same name as $head exists at the remote
# and their values match, use that.
#
# Otherwise find a random ref that matches $headrev.
find_matching_ref='
	my ($head,$headrev) = (@ARGV);
	my ($found);

	while (<STDIN>) {
		chomp;
		my ($sha1, $ref, $deref) = /^(\S+)\s+([^^]+)(\S*)$/;
		my ($pattern);
		next unless ($sha1 eq $headrev);

		$pattern="/$head\$";
		if ($ref eq $head) {
			$found = $ref;
		}
		if ($ref =~ /$pattern/) {
			$found = $ref;
		}
		if ($sha1 eq $head) {
			$found = $sha1;
		}
	}
	if ($found) {
		print "$found\n";
	}
'

ref=$(git ls-remote "$url" | @@PERL@@ -e "$find_matching_ref" "${remote:-HEAD}" "$headrev")

if test -z "$ref"
then
	echo "warn: No match for commit $headrev found at $url" >&2
	echo "warn: Are you sure you pushed '${remote:-HEAD}' there?" >&2
	status=1
fi

# Special case: turn "for_linus" to "tags/for_linus" when it is correct
if test "$ref" = "refs/tags/$pretty_remote"
then
	pretty_remote=tags/$pretty_remote
fi

url=$(git ls-remote --get-url "$url")

git show -s --format='The following changes since commit %H:

  %s (%ci)

are available in the git repository at:
' $merge_base &&
echo "  $url $pretty_remote" &&
git show -s --format='
for you to fetch changes up to %H:

  %s (%ci)

----------------------------------------------------------------' $headrev &&

if test $(git cat-file -t "$head") = tag
then
	git cat-file tag "$head" |
	sed -n -e '1,/^$/d' -e '/^-----BEGIN PGP /q' -e p
	echo
	echo "----------------------------------------------------------------"
fi &&

if test -n "$branch_name"
then
	echo "(from the branch description for $branch_name local branch)"
	echo
	git config "branch.$branch_name.description"
	echo "----------------------------------------------------------------"
fi &&

git shortlog ^$baserev $headrev &&
git diff -M --stat --summary $patch $merge_base..$headrev || status=1

exit $status