aboutsummaryrefslogtreecommitdiff
path: root/git-sh-setup.sh
blob: a44b1c74a38d6310d7a1bde969cbbcb51f977188 (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
#!/bin/sh
#
# This is included in commands that either have to be run from the toplevel
# of the repository, or with GIT_DIR environment variable properly.
# If the GIT_DIR does not look like the right correct git-repository,
# it dies.

# Having this variable in your environment would break scripts because
# you would cause "cd" to be taken to unexpected places.  If you
# like CDPATH, define it for your interactive shell sessions without
# exporting it.
unset CDPATH

die() {
	echo >&2 "$@"
	exit 1
}

if test -n "$OPTIONS_SPEC"; then
	usage() {
		"$0" -h
		exit 1
	}

	parseopt_extra=
	[ -n "$OPTIONS_KEEPDASHDASH" ] &&
		parseopt_extra="--keep-dashdash"

	eval "$(
		echo "$OPTIONS_SPEC" |
			git rev-parse --parseopt $parseopt_extra -- "$@" ||
		echo exit $?
	)"
else
	usage() {
		die "Usage: $0 $USAGE"
	}

	if [ -z "$LONG_USAGE" ]
	then
		LONG_USAGE="Usage: $0 $USAGE"
	else
		LONG_USAGE="Usage: $0 $USAGE

$LONG_USAGE"
	fi

	case "$1" in
		-h|--h|--he|--hel|--help)
		echo "$LONG_USAGE"
		exit
	esac
fi

set_reflog_action() {
	if [ -z "${GIT_REFLOG_ACTION:+set}" ]
	then
		GIT_REFLOG_ACTION="$*"
		export GIT_REFLOG_ACTION
	fi
}

git_editor() {
	: "${GIT_EDITOR:=$(git config core.editor)}"
	: "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
	case "$GIT_EDITOR,$TERM" in
	,dumb)
		echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
		echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
		echo >&2 "Please set one of these variables to an appropriate"
		echo >&2 "editor or run $0 with options that will not cause an"
		echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
		exit 1
		;;
	esac
	eval "${GIT_EDITOR:=vi}" '"$@"'
}

is_bare_repository () {
	git rev-parse --is-bare-repository
}

cd_to_toplevel () {
	cdup=$(git rev-parse --show-cdup)
	if test ! -z "$cdup"
	then
		cd "$cdup" || {
			echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
			exit 1
		}
	fi
}

require_work_tree () {
	test $(git rev-parse --is-inside-work-tree) = true ||
	die "fatal: $0 cannot be used without a working tree."
}

get_author_ident_from_commit () {
	pick_author_script='
	/^author /{
		s/'\''/'\''\\'\'\''/g
		h
		s/^author \([^<]*\) <[^>]*> .*$/\1/
		s/'\''/'\''\'\'\''/g
		s/.*/GIT_AUTHOR_NAME='\''&'\''/p

		g
		s/^author [^<]* <\([^>]*\)> .*$/\1/
		s/'\''/'\''\'\'\''/g
		s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p

		g
		s/^author [^<]* <[^>]*> \(.*\)$/\1/
		s/'\''/'\''\'\'\''/g
		s/.*/GIT_AUTHOR_DATE='\''&'\''/p

		q
	}
	'
	encoding=$(git config i18n.commitencoding || echo UTF-8)
	git show -s --pretty=raw --encoding="$encoding" "$1" -- |
	LANG=C LC_ALL=C sed -ne "$pick_author_script"
}

# Make sure we are in a valid repository of a vintage we understand,
# if we require to be in a git repository.
if test -z "$NONGIT_OK"
then
	GIT_DIR=$(git rev-parse --git-dir) || exit
	if [ -z "$SUBDIRECTORY_OK" ]
	then
		test -z "$(git rev-parse --show-cdup)" || {
			exit=$?
			echo >&2 "You need to run this command from the toplevel of the working tree."
			exit $exit
		}
	fi
	test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
		echo >&2 "Unable to determine absolute path of git directory"
		exit 1
	}
	: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
fi