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git-blame: Add Emacs Lisp file headers and GNU GPL boilerplate
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1#!/bin/sh
2#
d64e6b04 3# Copyright (c) 2005, 2006 Junio C Hamano
d1c5f2a4 4
d84029b6 5USAGE='[--signoff] [--dotest=<dir>] [--utf8 | --no-utf8] [--binary] [--3way]
67dad687 6 [--interactive] [--whitespace=<option>] [-CNUM] <mbox>...
cf1fe88c
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7 or, when resuming [--skip | --resolved]'
8. git-sh-setup
f9474132 9set_reflog_action am
7eff28a9 10require_work_tree
d1c5f2a4 11
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12git var GIT_COMMITTER_IDENT >/dev/null || exit
13
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14stop_here () {
15 echo "$1" >"$dotest/next"
16 exit 1
17}
18
ced9456a 19stop_here_user_resolve () {
cc120056
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20 if [ -n "$resolvemsg" ]; then
21 echo "$resolvemsg"
22 stop_here $1
23 fi
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24 cmdline=$(basename $0)
25 if test '' != "$interactive"
26 then
27 cmdline="$cmdline -i"
28 fi
29 if test '' != "$threeway"
30 then
31 cmdline="$cmdline -3"
32 fi
33 if test '.dotest' != "$dotest"
34 then
35 cmdline="$cmdline -d=$dotest"
36 fi
37 echo "When you have resolved this problem run \"$cmdline --resolved\"."
38 echo "If you would prefer to skip this patch, instead run \"$cmdline --skip\"."
39
40 stop_here $1
41}
42
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43go_next () {
44 rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
45 "$dotest/patch" "$dotest/info"
46 echo "$next" >"$dotest/next"
47 this=$next
48}
49
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50cannot_fallback () {
51 echo "$1"
52 echo "Cannot fall back to three-way merge."
53 exit 1
54}
55
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56fall_back_3way () {
57 O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
58
59 rm -fr "$dotest"/patch-merge-*
60 mkdir "$dotest/patch-merge-tmp-dir"
61
62 # First see if the patch records the index info that we can use.
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63 git-apply -z --index-info "$dotest/patch" \
64 >"$dotest/patch-merge-index-info" &&
65 GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
66 git-update-index -z --index-info <"$dotest/patch-merge-index-info" &&
67 GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
68 git-write-tree >"$dotest/patch-merge-base+" ||
69 cannot_fallback "Patch does not record usable index information."
70
71 echo Using index info to reconstruct a base tree...
72 if GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
b7627278 73 git-apply $binary --cached <"$dotest/patch"
d1c5f2a4 74 then
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75 mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
76 mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
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77 else
78 cannot_fallback "Did you hand edit your patch?
79It does not apply to blobs recorded in its index."
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80 fi
81
82 test -f "$dotest/patch-merge-index" &&
83 his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git-write-tree) &&
84 orig_tree=$(cat "$dotest/patch-merge-base") &&
85 rm -fr "$dotest"/patch-merge-* || exit 1
86
87 echo Falling back to patching base and 3-way merge...
88
89 # This is not so wrong. Depending on which base we picked,
90 # orig_tree may be wildly different from ours, but his_tree
91 # has the same set of wildly different changes in parts the
579c9bb1 92 # patch did not touch, so recursive ends up canceling them,
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93 # saying that we reverted all those changes.
94
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95 eval GITHEAD_$his_tree='"$SUBJECT"'
96 export GITHEAD_$his_tree
97 git-merge-recursive $orig_tree -- HEAD $his_tree || {
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98 if test -d "$GIT_DIR/rr-cache"
99 then
100 git-rerere
101 fi
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102 echo Failed to merge in the changes.
103 exit 1
104 }
579c9bb1 105 unset GITHEAD_$his_tree
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106}
107
108prec=4
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109dotest=.dotest sign= utf8=t keep= skip= interactive= resolved= binary= resolvemsg=
110git_apply_opt=
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111
112while case "$#" in 0) break;; esac
113do
114 case "$1" in
115 -d=*|--d=*|--do=*|--dot=*|--dote=*|--dotes=*|--dotest=*)
8096fae7 116 dotest=`expr "z$1" : 'z-[^=]*=\(.*\)'`; shift ;;
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117 -d|--d|--do|--dot|--dote|--dotes|--dotest)
118 case "$#" in 1) usage ;; esac; shift
119 dotest="$1"; shift;;
120
121 -i|--i|--in|--int|--inte|--inter|--intera|--interac|--interact|\
122 --interacti|--interactiv|--interactive)
123 interactive=t; shift ;;
124
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125 -b|--b|--bi|--bin|--bina|--binar|--binary)
126 binary=t; shift ;;
127
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128 -3|--3|--3w|--3wa|--3way)
129 threeway=t; shift ;;
130 -s|--s|--si|--sig|--sign|--signo|--signof|--signoff)
131 sign=t; shift ;;
132 -u|--u|--ut|--utf|--utf8)
3cf167ba 133 utf8=t; shift ;; # this is now default
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134 --no-u|--no-ut|--no-utf|--no-utf8)
135 utf8=; shift ;;
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136 -k|--k|--ke|--kee|--keep)
137 keep=t; shift ;;
138
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139 -r|--r|--re|--res|--reso|--resol|--resolv|--resolve|--resolved)
140 resolved=t; shift ;;
141
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142 --sk|--ski|--skip)
143 skip=t; shift ;;
144
8c31cb82 145 --whitespace=*)
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146 git_apply_opt="$git_apply_opt $1"; shift ;;
147
148 -C*)
149 git_apply_opt="$git_apply_opt $1"; shift ;;
8c31cb82 150
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151 --resolvemsg=*)
152 resolvemsg=$(echo "$1" | sed -e "s/^--resolvemsg=//"); shift ;;
153
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154 --)
155 shift; break ;;
156 -*)
157 usage ;;
158 *)
159 break ;;
160 esac
161done
162
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163# If the dotest directory exists, but we have finished applying all the
164# patches in them, clear it out.
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165if test -d "$dotest" &&
166 last=$(cat "$dotest/last") &&
167 next=$(cat "$dotest/next") &&
168 test $# != 0 &&
169 test "$next" -gt "$last"
170then
171 rm -fr "$dotest"
172fi
173
174if test -d "$dotest"
175then
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176 case "$#,$skip$resolved" in
177 0,*t*)
178 # Explicit resume command and we do not have file, so
179 # we are happy.
180 : ;;
181 0,)
182 # No file input but without resume parameters; catch
183 # user error to feed us a patch from standard input
184 # when there is already .dotest. This is somewhat
185 # unreliable -- stdin could be /dev/null for example
186 # and the caller did not intend to feed us a patch but
187 # wanted to continue unattended.
188 tty -s
189 ;;
190 *)
191 false
192 ;;
193 esac ||
194 die "previous dotest directory $dotest still exists but mbox given."
271440e3 195 resume=yes
d1c5f2a4 196else
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197 # Make sure we are not given --skip nor --resolved
198 test ",$skip,$resolved," = ,,, ||
cc120056 199 die "Resolve operation not in progress, we are not resuming."
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200
201 # Start afresh.
202 mkdir -p "$dotest" || exit
203
b3f041fb 204 git-mailsplit -d"$prec" -o"$dotest" -b -- "$@" > "$dotest/last" || {
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205 rm -fr "$dotest"
206 exit 1
207 }
208
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209 # -b, -s, -u, -k and --whitespace flags are kept for the
210 # resuming session after a patch failure.
0c15cc92 211 # -3 and -i can and must be given when resuming.
087b6742 212 echo "$binary" >"$dotest/binary"
8c31cb82 213 echo " $ws" >"$dotest/whitespace"
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214 echo "$sign" >"$dotest/sign"
215 echo "$utf8" >"$dotest/utf8"
216 echo "$keep" >"$dotest/keep"
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217 echo 1 >"$dotest/next"
218fi
219
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220case "$resolved" in
221'')
222 files=$(git-diff-index --cached --name-only HEAD) || exit
223 if [ "$files" ]; then
224 echo "Dirty index: cannot apply patches (dirty: $files)" >&2
225 exit 1
226 fi
227esac
228
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229if test "$(cat "$dotest/binary")" = t
230then
231 binary=--allow-binary-replacement
232fi
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233if test "$(cat "$dotest/utf8")" = t
234then
235 utf8=-u
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236else
237 utf8=-n
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238fi
239if test "$(cat "$dotest/keep")" = t
240then
241 keep=-k
242fi
8c31cb82 243ws=`cat "$dotest/whitespace"`
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244if test "$(cat "$dotest/sign")" = t
245then
246 SIGNOFF=`git-var GIT_COMMITTER_IDENT | sed -e '
247 s/>.*/>/
248 s/^/Signed-off-by: /'
249 `
250else
251 SIGNOFF=
252fi
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253
254last=`cat "$dotest/last"`
255this=`cat "$dotest/next"`
256if test "$skip" = t
257then
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258 if test -d "$GIT_DIR/rr-cache"
259 then
260 git-rerere clear
261 fi
d1c5f2a4 262 this=`expr "$this" + 1`
69224716 263 resume=
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264fi
265
266if test "$this" -gt "$last"
267then
268 echo Nothing to do.
269 rm -fr "$dotest"
270 exit
271fi
272
273while test "$this" -le "$last"
274do
275 msgnum=`printf "%0${prec}d" $this`
276 next=`expr "$this" + 1`
277 test -f "$dotest/$msgnum" || {
69224716 278 resume=
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279 go_next
280 continue
281 }
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282
283 # If we are not resuming, parse and extract the patch information
284 # into separate files:
285 # - info records the authorship and title
286 # - msg is the rest of commit log message
287 # - patch is the patch body.
288 #
289 # When we are resuming, these files are either already prepared
290 # by the user, or the user can tell us to do so by --resolved flag.
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291 case "$resume" in
292 '')
293 git-mailinfo $keep $utf8 "$dotest/msg" "$dotest/patch" \
294 <"$dotest/$msgnum" >"$dotest/info" ||
295 stop_here $this
296 git-stripspace < "$dotest/msg" > "$dotest/msg-clean"
297 ;;
298 esac
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299
300 GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
301 GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
302 GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
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303
304 if test -z "$GIT_AUTHOR_EMAIL"
305 then
306 echo "Patch does not have a valid e-mail address."
307 stop_here $this
308 fi
309
2c674191 310 export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
d1c5f2a4 311
4bfb6b62 312 SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
d1c5f2a4 313 case "$keep_subject" in -k) SUBJECT="[PATCH] $SUBJECT" ;; esac
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314
315 case "$resume" in
316 '')
317 if test '' != "$SIGNOFF"
318 then
d1c5f2a4 319 LAST_SIGNED_OFF_BY=`
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320 sed -ne '/^Signed-off-by: /p' \
321 "$dotest/msg-clean" |
322 tail -n 1
d1c5f2a4 323 `
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324 ADD_SIGNOFF=`
325 test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
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326 test '' = "$LAST_SIGNED_OFF_BY" && echo
327 echo "$SIGNOFF"
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328 }`
329 else
d1c5f2a4 330 ADD_SIGNOFF=
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331 fi
332 {
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333 echo "$SUBJECT"
334 if test -s "$dotest/msg-clean"
335 then
336 echo
337 cat "$dotest/msg-clean"
338 fi
339 if test '' != "$ADD_SIGNOFF"
340 then
341 echo "$ADD_SIGNOFF"
342 fi
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343 } >"$dotest/final-commit"
344 ;;
0c15cc92 345 *)
6d28644d 346 case "$resolved$interactive" in
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347 tt)
348 # This is used only for interactive view option.
349 git-diff-index -p --cached HEAD >"$dotest/patch"
350 ;;
351 esac
4bfb6b62 352 esac
d1c5f2a4 353
4bfb6b62 354 resume=
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355 if test "$interactive" = t
356 then
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357 test -t 0 ||
358 die "cannot be interactive without stdin connected to a terminal."
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359 action=again
360 while test "$action" = again
361 do
362 echo "Commit Body is:"
363 echo "--------------------------"
364 cat "$dotest/final-commit"
365 echo "--------------------------"
9754563c 366 printf "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
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367 read reply
368 case "$reply" in
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369 [yY]*) action=yes ;;
370 [aA]*) action=yes interactive= ;;
371 [nN]*) action=skip ;;
372 [eE]*) "${VISUAL:-${EDITOR:-vi}}" "$dotest/final-commit"
d1c5f2a4 373 action=again ;;
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374 [vV]*) action=again
375 LESS=-S ${PAGER:-less} "$dotest/patch" ;;
376 *) action=again ;;
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377 esac
378 done
379 else
380 action=yes
381 fi
382
383 if test $action = skip
384 then
385 go_next
386 continue
387 fi
388
389 if test -x "$GIT_DIR"/hooks/applypatch-msg
390 then
391 "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
392 stop_here $this
393 fi
394
395 echo
396 echo "Applying '$SUBJECT'"
397 echo
398
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399 case "$resolved" in
400 '')
67dad687 401 git-apply $git_apply_opt $binary --index "$dotest/patch"
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402 apply_status=$?
403 ;;
404 t)
405 # Resolved means the user did all the hard work, and
406 # we do not have to do any patch application. Just
407 # trust what the user has in the index file and the
408 # working tree.
409 resolved=
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410 changed="$(git-diff-index --cached --name-only HEAD)"
411 if test '' = "$changed"
412 then
64646d11 413 echo "No changes - did you forget to use 'git add'?"
ced9456a 414 stop_here_user_resolve $this
6d28644d 415 fi
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416 unmerged=$(git-ls-files -u)
417 if test -n "$unmerged"
418 then
419 echo "You still have unmerged paths in your index"
64646d11 420 echo "did you forget to use 'git add'?"
ced9456a 421 stop_here_user_resolve $this
c1d1128b 422 fi
0c15cc92 423 apply_status=0
f131dd49
EW
424 if test -d "$GIT_DIR/rr-cache"
425 then
426 git rerere
427 fi
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428 ;;
429 esac
430
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431 if test $apply_status = 1 && test "$threeway" = t
432 then
73319032 433 if (fall_back_3way)
d1c5f2a4 434 then
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435 # Applying the patch to an earlier tree and merging the
436 # result may have produced the same tree as ours.
6d28644d 437 changed="$(git-diff-index --cached --name-only HEAD)"
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438 if test '' = "$changed"
439 then
440 echo No changes -- Patch already applied.
441 go_next
442 continue
443 fi
444 # clear apply_status -- we have successfully merged.
445 apply_status=0
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446 fi
447 fi
448 if test $apply_status != 0
449 then
450 echo Patch failed at $msgnum.
ced9456a 451 stop_here_user_resolve $this
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452 fi
453
454 if test -x "$GIT_DIR"/hooks/pre-applypatch
455 then
456 "$GIT_DIR"/hooks/pre-applypatch || stop_here $this
457 fi
458
459 tree=$(git-write-tree) &&
460 echo Wrote tree $tree &&
461 parent=$(git-rev-parse --verify HEAD) &&
462 commit=$(git-commit-tree $tree -p $parent <"$dotest/final-commit") &&
463 echo Committed: $commit &&
f9474132 464 git-update-ref -m "$GIT_REFLOG_ACTION: $SUBJECT" HEAD $commit $parent ||
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465 stop_here $this
466
467 if test -x "$GIT_DIR"/hooks/post-applypatch
468 then
469 "$GIT_DIR"/hooks/post-applypatch
470 fi
471
472 go_next
473done
474
475rm -fr "$dotest"