Git 1.7.4
[git/git.git] / git-sh-setup.sh
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1#!/bin/sh
2#
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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.
b33e9666 7
365527ad 8# Having this variable in your environment would break scripts because
e598c517 9# you would cause "cd" to be taken to unexpected places. If you
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10# like CDPATH, define it for your interactive shell sessions without
11# exporting it.
12unset CDPATH
13
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14git_broken_path_fix () {
15 case ":$PATH:" in
16 *:$1:*) : ok ;;
17 *)
18 PATH=$(
19 SANE_TOOL_PATH="$1"
20 IFS=: path= sep=
21 set x $PATH
22 shift
23 for elem
24 do
25 case "$SANE_TOOL_PATH:$elem" in
26 (?*:/bin | ?*:/usr/bin)
27 path="$path$sep$SANE_TOOL_PATH"
28 sep=:
29 SANE_TOOL_PATH=
30 esac
31 path="$path$sep$elem"
32 sep=:
33 done
34 echo "$path"
35 )
36 ;;
37 esac
38}
39
40# @@BROKEN_PATH_FIX@@
0e0aea5a 41
b33e9666 42die() {
8098a178 43 echo >&2 "$@"
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44 exit 1
45}
46
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47GIT_QUIET=
48
49say () {
50 if test -z "$GIT_QUIET"
51 then
52 printf '%s\n' "$*"
53 fi
54}
55
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56if test -n "$OPTIONS_SPEC"; then
57 usage() {
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58 "$0" -h
59 exit 1
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60 }
61
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62 parseopt_extra=
63 [ -n "$OPTIONS_KEEPDASHDASH" ] &&
64 parseopt_extra="--keep-dashdash"
65
66 eval "$(
cbea86fd 67 echo "$OPTIONS_SPEC" |
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68 git rev-parse --parseopt $parseopt_extra -- "$@" ||
69 echo exit $?
70 )"
bac199b7 71else
1b1dd23f 72 dashless=$(basename "$0" | sed -e 's/-/ /')
bac199b7 73 usage() {
1b1dd23f 74 die "Usage: $dashless $USAGE"
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75 }
76
77 if [ -z "$LONG_USAGE" ]
78 then
1b1dd23f 79 LONG_USAGE="Usage: $dashless $USAGE"
bac199b7 80 else
1b1dd23f 81 LONG_USAGE="Usage: $dashless $USAGE
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82
83$LONG_USAGE"
84 fi
85
86 case "$1" in
87 -h|--h|--he|--hel|--help)
88 echo "$LONG_USAGE"
89 exit
90 esac
91fi
d025524d 92
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93set_reflog_action() {
94 if [ -z "${GIT_REFLOG_ACTION:+set}" ]
95 then
96 GIT_REFLOG_ACTION="$*"
97 export GIT_REFLOG_ACTION
98 fi
99}
100
ef0c2abf 101git_editor() {
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102 if test -z "${GIT_EDITOR:+set}"
103 then
104 GIT_EDITOR="$(git var GIT_EDITOR)" || return $?
105 fi
106
107 eval "$GIT_EDITOR" '"$@"'
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108}
109
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110git_pager() {
111 if test -t 1
112 then
113 GIT_PAGER=$(git var GIT_PAGER)
114 else
115 GIT_PAGER=cat
116 fi
117 : ${LESS=-FRSX}
118 export LESS
119
120 eval "$GIT_PAGER" '"$@"'
121}
122
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123sane_grep () {
124 GREP_OPTIONS= LC_ALL=C grep "$@"
125}
126
127sane_egrep () {
128 GREP_OPTIONS= LC_ALL=C egrep "$@"
129}
130
4b441f47 131is_bare_repository () {
5be60078 132 git rev-parse --is-bare-repository
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133}
134
9fde9401 135cd_to_toplevel () {
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136 cdup=$(git rev-parse --show-toplevel) &&
137 cd "$cdup" || {
138 echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
139 exit 1
140 }
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141}
142
7eff28a9 143require_work_tree () {
ab62677b 144 test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true ||
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145 die "fatal: $0 cannot be used without a working tree."
146}
147
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148require_clean_work_tree () {
149 git rev-parse --verify HEAD >/dev/null || exit 1
150 git update-index -q --ignore-submodules --refresh
151 err=0
152
153 if ! git diff-files --quiet --ignore-submodules
154 then
155 echo >&2 "Cannot $1: You have unstaged changes."
156 err=1
157 fi
158
159 if ! git diff-index --cached --quiet --ignore-submodules HEAD --
160 then
161 if [ $err = 0 ]
162 then
163 echo >&2 "Cannot $1: Your index contains uncommitted changes."
164 else
165 echo >&2 "Additionally, your index contains uncommitted changes."
166 fi
167 err=1
168 fi
169
170 if [ $err = 1 ]
171 then
172 test -n "$2" && echo >&2 "$2"
173 exit 1
174 fi
175}
176
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177get_author_ident_from_commit () {
178 pick_author_script='
179 /^author /{
180 s/'\''/'\''\\'\'\''/g
181 h
182 s/^author \([^<]*\) <[^>]*> .*$/\1/
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183 s/.*/GIT_AUTHOR_NAME='\''&'\''/p
184
185 g
186 s/^author [^<]* <\([^>]*\)> .*$/\1/
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187 s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
188
189 g
190 s/^author [^<]* <[^>]*> \(.*\)$/\1/
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191 s/.*/GIT_AUTHOR_DATE='\''&'\''/p
192
193 q
194 }
195 '
196 encoding=$(git config i18n.commitencoding || echo UTF-8)
077b725f 197 git show -s --pretty=raw --encoding="$encoding" "$1" -- |
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198 LANG=C LC_ALL=C sed -ne "$pick_author_script"
199}
200
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201# Clear repo-local GIT_* environment variables. Useful when switching to
202# another repository (e.g. when entering a submodule). See also the env
203# list in git_connect()
204clear_local_git_env() {
205 unset $(git rev-parse --local-env-vars)
206}
207
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208# Make sure we are in a valid repository of a vintage we understand,
209# if we require to be in a git repository.
70087cdb 210if test -z "$NONGIT_OK"
d025524d 211then
4d6d6d2d 212 GIT_DIR=$(git rev-parse --git-dir) || exit
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213 if [ -z "$SUBDIRECTORY_OK" ]
214 then
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215 test -z "$(git rev-parse --show-cdup)" || {
216 exit=$?
217 echo >&2 "You need to run this command from the toplevel of the working tree."
218 exit $exit
219 }
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220 fi
221 test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
222 echo >&2 "Unable to determine absolute path of git directory"
223 exit 1
b2bc9a30 224 }
22c90717 225 : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
d025524d 226fi
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227
228# Fix some commands on Windows
229case $(uname -s) in
230*MINGW*)
231 # Windows has its own (incompatible) sort and find
232 sort () {
233 /usr/bin/sort "$@"
234 }
235 find () {
236 /usr/bin/find "$@"
237 }
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238 is_absolute_path () {
239 case "$1" in
240 [/\\]* | [A-Za-z]:*)
241 return 0 ;;
242 esac
243 return 1
244 }
87bddba9 245 ;;
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246*)
247 is_absolute_path () {
248 case "$1" in
249 /*)
250 return 0 ;;
251 esac
252 return 1
253 }
87bddba9 254esac