1 #!/bin/sh
2 #
3 # This is included in commands that either have to be run from the toplevel
4 # of the repository, or with GIT_DIR environment variable properly.
5 # If the GIT_DIR does not look like the right correct git-repository,
6 # it dies.
8 # Having this variable in your environment would break scripts because
9 # you would cause "cd" to be be taken to unexpected places. If you
10 # like CDPATH, define it for your interactive shell sessions without
11 # exporting it.
12 unset CDPATH
14 die() {
15 echo >&2 "$@"
16 exit 1
17 }
19 usage() {
20 die "Usage: $0 $USAGE"
21 }
23 set_reflog_action() {
24 if [ -z "${GIT_REFLOG_ACTION:+set}" ]
25 then
26 GIT_REFLOG_ACTION="$*"
27 export GIT_REFLOG_ACTION
28 fi
29 }
31 is_bare_repository () {
32 git-config --bool --get core.bare ||
33 case "$GIT_DIR" in
34 .git | */.git) echo false ;;
35 *) echo true ;;
36 esac
37 }
39 cd_to_toplevel () {
40 cdup=$(git-rev-parse --show-cdup)
41 if test ! -z "$cdup"
42 then
43 cd "$cdup" || {
44 echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
45 exit 1
46 }
47 fi
48 }
50 require_work_tree () {
51 test $(is_bare_repository) = false &&
52 test $(git-rev-parse --is-inside-git-dir) = false ||
53 die "fatal: $0 cannot be used without a working tree."
54 }
56 get_author_ident_from_commit () {
57 pick_author_script='
58 /^author /{
59 s/'\''/'\''\\'\'\''/g
60 h
61 s/^author \([^<]*\) <[^>]*> .*$/\1/
62 s/'\''/'\''\'\'\''/g
63 s/.*/GIT_AUTHOR_NAME='\''&'\''/p
65 g
66 s/^author [^<]* <\([^>]*\)> .*$/\1/
67 s/'\''/'\''\'\'\''/g
68 s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
70 g
71 s/^author [^<]* <[^>]*> \(.*\)$/\1/
72 s/'\''/'\''\'\'\''/g
73 s/.*/GIT_AUTHOR_DATE='\''&'\''/p
75 q
76 }
77 '
78 encoding=$(git config i18n.commitencoding || echo UTF-8)
79 git show -s --pretty=raw --encoding="$encoding" "$1" |
80 LANG=C LC_ALL=C sed -ne "$pick_author_script"
81 }
83 if [ -z "$LONG_USAGE" ]
84 then
85 LONG_USAGE="Usage: $0 $USAGE"
86 else
87 LONG_USAGE="Usage: $0 $USAGE
89 $LONG_USAGE"
90 fi
92 case "$1" in
93 -h|--h|--he|--hel|--help)
94 echo "$LONG_USAGE"
95 exit
96 esac
98 # Make sure we are in a valid repository of a vintage we understand.
99 if [ -z "$SUBDIRECTORY_OK" ]
100 then
101 : ${GIT_DIR=.git}
102 GIT_DIR=$(GIT_DIR="$GIT_DIR" git-rev-parse --git-dir) || {
103 exit=$?
104 echo >&2 "You need to run this command from the toplevel of the working tree."
105 exit $exit
106 }
107 else
108 GIT_DIR=$(git-rev-parse --git-dir) || exit
109 fi
110 : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}