bash completion: Add long options for 'git describe'
[git] / git-sh-setup.sh
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.
7
8 # Having this variable in your environment would break scripts because
9 # you would cause "cd" to be taken to unexpected places.  If you
10 # like CDPATH, define it for your interactive shell sessions without
11 # exporting it.
12 unset CDPATH
13
14 die() {
15         echo >&2 "$@"
16         exit 1
17 }
18
19 if test -n "$OPTIONS_SPEC"; then
20         usage() {
21                 "$0" -h
22                 exit 1
23         }
24
25         parseopt_extra=
26         [ -n "$OPTIONS_KEEPDASHDASH" ] &&
27                 parseopt_extra="--keep-dashdash"
28
29         eval "$(
30                 echo "$OPTIONS_SPEC" |
31                         git rev-parse --parseopt $parseopt_extra -- "$@" ||
32                 echo exit $?
33         )"
34 else
35         dashless=$(basename "$0" | sed -e 's/-/ /')
36         usage() {
37                 die "Usage: $dashless $USAGE"
38         }
39
40         if [ -z "$LONG_USAGE" ]
41         then
42                 LONG_USAGE="Usage: $dashless $USAGE"
43         else
44                 LONG_USAGE="Usage: $dashless $USAGE
45
46 $LONG_USAGE"
47         fi
48
49         case "$1" in
50                 -h|--h|--he|--hel|--help)
51                 echo "$LONG_USAGE"
52                 exit
53         esac
54 fi
55
56 set_reflog_action() {
57         if [ -z "${GIT_REFLOG_ACTION:+set}" ]
58         then
59                 GIT_REFLOG_ACTION="$*"
60                 export GIT_REFLOG_ACTION
61         fi
62 }
63
64 git_editor() {
65         : "${GIT_EDITOR:=$(git config core.editor)}"
66         : "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
67         case "$GIT_EDITOR,$TERM" in
68         ,dumb)
69                 echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
70                 echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
71                 echo >&2 "Please set one of these variables to an appropriate"
72                 echo >&2 "editor or run $0 with options that will not cause an"
73                 echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
74                 exit 1
75                 ;;
76         esac
77         eval "${GIT_EDITOR:=vi}" '"$@"'
78 }
79
80 is_bare_repository () {
81         git rev-parse --is-bare-repository
82 }
83
84 cd_to_toplevel () {
85         cdup=$(git rev-parse --show-cdup)
86         if test ! -z "$cdup"
87         then
88                 cd "$cdup" || {
89                         echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
90                         exit 1
91                 }
92         fi
93 }
94
95 require_work_tree () {
96         test $(git rev-parse --is-inside-work-tree) = true ||
97         die "fatal: $0 cannot be used without a working tree."
98 }
99
100 get_author_ident_from_commit () {
101         pick_author_script='
102         /^author /{
103                 s/'\''/'\''\\'\'\''/g
104                 h
105                 s/^author \([^<]*\) <[^>]*> .*$/\1/
106                 s/'\''/'\''\'\'\''/g
107                 s/.*/GIT_AUTHOR_NAME='\''&'\''/p
108
109                 g
110                 s/^author [^<]* <\([^>]*\)> .*$/\1/
111                 s/'\''/'\''\'\'\''/g
112                 s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
113
114                 g
115                 s/^author [^<]* <[^>]*> \(.*\)$/\1/
116                 s/'\''/'\''\'\'\''/g
117                 s/.*/GIT_AUTHOR_DATE='\''&'\''/p
118
119                 q
120         }
121         '
122         encoding=$(git config i18n.commitencoding || echo UTF-8)
123         git show -s --pretty=raw --encoding="$encoding" "$1" -- |
124         LANG=C LC_ALL=C sed -ne "$pick_author_script"
125 }
126
127 # Make sure we are in a valid repository of a vintage we understand,
128 # if we require to be in a git repository.
129 if test -z "$NONGIT_OK"
130 then
131         GIT_DIR=$(git rev-parse --git-dir) || exit
132         if [ -z "$SUBDIRECTORY_OK" ]
133         then
134                 test -z "$(git rev-parse --show-cdup)" || {
135                         exit=$?
136                         echo >&2 "You need to run this command from the toplevel of the working tree."
137                         exit $exit
138                 }
139         fi
140         test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
141                 echo >&2 "Unable to determine absolute path of git directory"
142                 exit 1
143         }
144         : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
145 fi
146
147 # Fix some commands on Windows
148 case $(uname -s) in
149 *MINGW*)
150         # Windows has its own (incompatible) sort and find
151         sort () {
152                 /usr/bin/sort "$@"
153         }
154         find () {
155                 /usr/bin/find "$@"
156         }
157         ;;
158 esac