freshlybakedca.ke
Git fork
1# This shell scriplet is meant to be included by other shell scripts
2# to set up some variables pointing at the normal git directories and
3# a few helper shell functions.
4
5# Having this variable in your environment would break scripts because
6# you would cause "cd" to be taken to unexpected places. If you
7# like CDPATH, define it for your interactive shell sessions without
8# exporting it.
9# But we protect ourselves from such a user mistake nevertheless.
10unset CDPATH
11
12# Similarly for IFS, but some shells (e.g. FreeBSD 7.2) are buggy and
13# do not equate an unset IFS with IFS with the default, so here is
14# an explicit SP HT LF.
15IFS='
16'
17
18git_broken_path_fix () {
19 case ":$PATH:" in
20 *:$1:*) : ok ;;
21 *)
22 PATH=$(
23 SANE_TOOL_PATH="$1"
24 IFS=: path= sep=
25 set x $PATH
26 shift
27 for elem
28 do
29 case "$SANE_TOOL_PATH:$elem" in
30 (?*:/bin | ?*:/usr/bin)
31 path="$path$sep$SANE_TOOL_PATH"
32 sep=:
33 SANE_TOOL_PATH=
34 esac
35 path="$path$sep$elem"
36 sep=:
37 done
38 echo "$path"
39 )
40 ;;
41 esac
42}
43
44# @BROKEN_PATH_FIX@
45
46# Source git-sh-i18n for gettext support.
47. "$(git --exec-path)/git-sh-i18n"
48
49die () {
50 die_with_status 1 "$@"
51}
52
53die_with_status () {
54 status=$1
55 shift
56 printf >&2 '%s\n' "$*"
57 exit "$status"
58}
59
60if test -n "$OPTIONS_SPEC"; then
61 usage() {
62 "$0" -h
63 exit 1
64 }
65
66 parseopt_extra=
67 [ -n "$OPTIONS_KEEPDASHDASH" ] &&
68 parseopt_extra="--keep-dashdash"
69 [ -n "$OPTIONS_STUCKLONG" ] &&
70 parseopt_extra="$parseopt_extra --stuck-long"
71
72 eval "$(
73 echo "$OPTIONS_SPEC" |
74 git rev-parse --parseopt $parseopt_extra -- "$@" ||
75 echo exit $?
76 )"
77else
78 dashless=$(basename -- "$0" | sed -e 's/-/ /')
79 usage() {
80 die "$(eval_gettext "usage: \$dashless \$USAGE")"
81 }
82
83 if [ -z "$LONG_USAGE" ]
84 then
85 LONG_USAGE="$(eval_gettext "usage: \$dashless \$USAGE")"
86 else
87 LONG_USAGE="$(eval_gettext "usage: \$dashless \$USAGE
88
89$LONG_USAGE")"
90 fi
91
92 case "$1" in
93 -h)
94 echo "$LONG_USAGE"
95 exit
96 esac
97fi
98
99# Set the name of the end-user facing command in the reflog when the
100# script may update refs. When GIT_REFLOG_ACTION is already set, this
101# will not overwrite it, so that a scripted Porcelain (e.g. "git
102# rebase") can set it to its own name (e.g. "rebase") and then call
103# another scripted Porcelain (e.g. "git am") and a call to this
104# function in the latter will keep the name of the end-user facing
105# program (e.g. "rebase") in GIT_REFLOG_ACTION, ensuring whatever it
106# does will be record as actions done as part of the end-user facing
107# operation (e.g. "rebase").
108#
109# NOTE NOTE NOTE: consequently, after assigning a specific message to
110# GIT_REFLOG_ACTION when calling a "git" command to record a custom
111# reflog message, do not leave that custom value in GIT_REFLOG_ACTION,
112# after you are done. Other callers of "git" commands that rely on
113# writing the default "program name" in reflog expect the variable to
114# contain the value set by this function.
115#
116# To use a custom reflog message, do either one of these three:
117#
118# (a) use a single-shot export form:
119# GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: preparing frotz" \
120# git command-that-updates-a-ref
121#
122# (b) save the original away and restore:
123# SAVED_ACTION=$GIT_REFLOG_ACTION
124# GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: preparing frotz"
125# git command-that-updates-a-ref
126# GIT_REFLOG_ACITON=$SAVED_ACTION
127#
128# (c) assign the variable in a subshell:
129# (
130# GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: preparing frotz"
131# git command-that-updates-a-ref
132# )
133set_reflog_action() {
134 if [ -z "${GIT_REFLOG_ACTION:+set}" ]
135 then
136 GIT_REFLOG_ACTION="$*"
137 export GIT_REFLOG_ACTION
138 fi
139}
140
141git_editor() {
142 if test -z "${GIT_EDITOR:+set}"
143 then
144 GIT_EDITOR="$(git var GIT_EDITOR)" || return $?
145 fi
146
147 eval "$GIT_EDITOR" '"$@"'
148}
149
150git_pager() {
151 if test -t 1
152 then
153 GIT_PAGER=$(git var GIT_PAGER)
154 else
155 GIT_PAGER=cat
156 fi
157 for vardef in @PAGER_ENV@
158 do
159 var=${vardef%%=*}
160 eval ": \"\${$vardef}\" && export $var"
161 done
162
163 eval "$GIT_PAGER" '"$@"'
164}
165
166is_bare_repository () {
167 git rev-parse --is-bare-repository
168}
169
170cd_to_toplevel () {
171 cdup=$(git rev-parse --show-toplevel) &&
172 cd "$cdup" || {
173 gettextln "Cannot chdir to \$cdup, the toplevel of the working tree" >&2
174 exit 1
175 }
176}
177
178require_work_tree_exists () {
179 if test "z$(git rev-parse --is-bare-repository)" != zfalse
180 then
181 program_name=$0
182 die "$(eval_gettext "fatal: \$program_name cannot be used without a working tree.")"
183 fi
184}
185
186require_work_tree () {
187 test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true || {
188 program_name=$0
189 die "$(eval_gettext "fatal: \$program_name cannot be used without a working tree.")"
190 }
191}
192
193require_clean_work_tree () {
194 git rev-parse --verify HEAD >/dev/null || exit 1
195 git update-index -q --ignore-submodules --refresh
196 err=0
197
198 if ! git diff-files --quiet --ignore-submodules
199 then
200 action=$1
201 case "$action" in
202 "rewrite branches")
203 gettextln "Cannot rewrite branches: You have unstaged changes." >&2
204 ;;
205 *)
206 eval_gettextln "Cannot \$action: You have unstaged changes." >&2
207 ;;
208 esac
209 err=1
210 fi
211
212 if ! git diff-index --cached --quiet --ignore-submodules HEAD --
213 then
214 if test $err = 0
215 then
216 action=$1
217 eval_gettextln "Cannot \$action: Your index contains uncommitted changes." >&2
218 else
219 gettextln "Additionally, your index contains uncommitted changes." >&2
220 fi
221 err=1
222 fi
223
224 if test $err = 1
225 then
226 test -n "$2" && echo "$2" >&2
227 exit 1
228 fi
229}
230
231# Generate a sed script to parse identities from a commit.
232#
233# Reads the commit from stdin, which should be in raw format (e.g., from
234# cat-file or "--pretty=raw").
235#
236# The first argument specifies the ident line to parse (e.g., "author"), and
237# the second specifies the environment variable to put it in (e.g., "AUTHOR"
238# for "GIT_AUTHOR_*"). Multiple pairs can be given to parse author and
239# committer.
240pick_ident_script () {
241 while test $# -gt 0
242 do
243 lid=$1; shift
244 uid=$1; shift
245 printf '%s' "
246 /^$lid /{
247 s/'/'\\\\''/g
248 h
249 s/^$lid "'\([^<]*\) <[^>]*> .*$/\1/'"
250 s/.*/GIT_${uid}_NAME='&'/p
251
252 g
253 s/^$lid "'[^<]* <\([^>]*\)> .*$/\1/'"
254 s/.*/GIT_${uid}_EMAIL='&'/p
255
256 g
257 s/^$lid "'[^<]* <[^>]*> \(.*\)$/@\1/'"
258 s/.*/GIT_${uid}_DATE='&'/p
259 }
260 "
261 done
262 echo '/^$/q'
263}
264
265# Create a pick-script as above and feed it to sed. Stdout is suitable for
266# feeding to eval.
267parse_ident_from_commit () {
268 LANG=C LC_ALL=C sed -ne "$(pick_ident_script "$@")"
269}
270
271# Parse the author from a commit given as an argument. Stdout is suitable for
272# feeding to eval to set the usual GIT_* ident variables.
273get_author_ident_from_commit () {
274 encoding=$(git config i18n.commitencoding || echo UTF-8)
275 git show -s --pretty=raw --encoding="$encoding" "$1" -- |
276 parse_ident_from_commit author AUTHOR
277}
278
279# Generate a virtual base file for a two-file merge. Uses git apply to
280# remove lines from $1 that are not in $2, leaving only common lines.
281create_virtual_base() {
282 sz0=$(wc -c <"$1")
283 @DIFF@ -u -La/"$1" -Lb/"$1" "$1" "$2" | git apply --no-add
284 sz1=$(wc -c <"$1")
285
286 # If we do not have enough common material, it is not
287 # worth trying two-file merge using common subsections.
288 expr $sz0 \< $sz1 \* 2 >/dev/null || : >"$1"
289}
290
291
292# Platform specific tweaks to work around some commands
293case $(uname -s) in
294*MINGW*)
295 # Windows has its own (incompatible) sort and find
296 sort () {
297 /usr/bin/sort "$@"
298 }
299 find () {
300 /usr/bin/find "$@"
301 }
302 # git sees Windows-style pwd
303 pwd () {
304 builtin pwd -W
305 }
306 is_absolute_path () {
307 case "$1" in
308 [/\\]* | [A-Za-z]:*)
309 return 0 ;;
310 esac
311 return 1
312 }
313 ;;
314*)
315 is_absolute_path () {
316 case "$1" in
317 /*)
318 return 0 ;;
319 esac
320 return 1
321 }
322esac
323
324# Make sure we are in a valid repository of a vintage we understand,
325# if we require to be in a git repository.
326git_dir_init () {
327 GIT_DIR=$(git rev-parse --git-dir) || exit
328 if [ -z "$SUBDIRECTORY_OK" ]
329 then
330 test -z "$(git rev-parse --show-cdup)" || {
331 exit=$?
332 gettextln "You need to run this command from the toplevel of the working tree." >&2
333 exit $exit
334 }
335 fi
336 test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
337 gettextln "Unable to determine absolute path of git directory" >&2
338 exit 1
339 }
340 : "${GIT_OBJECT_DIRECTORY="$(git rev-parse --git-path objects)"}"
341}
342
343if test -z "$NONGIT_OK"
344then
345 git_dir_init
346fi
347
348peel_committish () {
349 case "$1" in
350 :/*)
351 peeltmp=$(git rev-parse --verify "$1") &&
352 git rev-parse --verify "${peeltmp}^0"
353 ;;
354 *)
355 git rev-parse --verify "${1}^0"
356 ;;
357 esac
358}