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Commit | Line | Data |
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8cc6a083 | 1 | #!/bin/sh |
d025524d | 2 | |
a17c4101 | 3 | USAGE='[start|bad|good|next|reset|visualize|replay|log|run]' |
38a47fd6 CC |
4 | LONG_USAGE='git bisect start [<bad> [<good>...]] [--] [<pathspec>...] |
5 | reset bisect state and start bisection. | |
6 | git bisect bad [<rev>] | |
7 | mark <rev> a known-bad revision. | |
8 | git bisect good [<rev>...] | |
9 | mark <rev>... known-good revisions. | |
10 | git bisect next | |
11 | find next bisection to test and check it out. | |
12 | git bisect reset [<branch>] | |
13 | finish bisection search and go back to branch. | |
14 | git bisect visualize | |
15 | show bisect status in gitk. | |
16 | git bisect replay <logfile> | |
17 | replay bisection log. | |
18 | git bisect log | |
19 | show bisect log. | |
20 | git bisect run <cmd>... | |
21 | use <cmd>... to automatically bisect.' | |
d025524d | 22 | |
ae2b0f15 | 23 | . git-sh-setup |
4c550686 | 24 | require_work_tree |
8cc6a083 | 25 | |
e9a45d75 | 26 | sq() { |
d9bffc08 | 27 | @@PERL@@ -e ' |
e9a45d75 JH |
28 | for (@ARGV) { |
29 | s/'\''/'\'\\\\\'\''/g; | |
30 | print " '\''$_'\''"; | |
31 | } | |
32 | print "\n"; | |
33 | ' "$@" | |
34 | } | |
35 | ||
8cc6a083 LT |
36 | bisect_autostart() { |
37 | test -d "$GIT_DIR/refs/bisect" || { | |
38 | echo >&2 'You need to start by "git bisect start"' | |
39 | if test -t 0 | |
40 | then | |
41 | echo >&2 -n 'Do you want me to do it for you [Y/n]? ' | |
42 | read yesno | |
43 | case "$yesno" in | |
44 | [Nn]*) | |
45 | exit ;; | |
46 | esac | |
47 | bisect_start | |
48 | else | |
49 | exit 1 | |
50 | fi | |
51 | } | |
52 | } | |
53 | ||
54 | bisect_start() { | |
8cc6a083 LT |
55 | # |
56 | # Verify HEAD. If we were bisecting before this, reset to the | |
57 | # top-of-line master first! | |
58 | # | |
8098a178 JH |
59 | head=$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD) || |
60 | die "Bad HEAD - I need a symbolic ref" | |
8cc6a083 | 61 | case "$head" in |
673e5838 | 62 | refs/heads/bisect) |
810255fd PB |
63 | if [ -s "$GIT_DIR/head-name" ]; then |
64 | branch=`cat "$GIT_DIR/head-name"` | |
65 | else | |
66 | branch=master | |
67 | fi | |
68 | git checkout $branch || exit | |
8cc6a083 LT |
69 | ;; |
70 | refs/heads/*) | |
810255fd PB |
71 | [ -s "$GIT_DIR/head-name" ] && die "won't bisect on seeked tree" |
72 | echo "$head" | sed 's#^refs/heads/##' >"$GIT_DIR/head-name" | |
8cc6a083 LT |
73 | ;; |
74 | *) | |
8098a178 | 75 | die "Bad HEAD - strange symbolic ref" |
8cc6a083 LT |
76 | ;; |
77 | esac | |
78 | ||
79 | # | |
80 | # Get rid of any old bisect state | |
81 | # | |
38a47fd6 | 82 | bisect_clean_state |
8cc6a083 | 83 | mkdir "$GIT_DIR/refs/bisect" |
38a47fd6 CC |
84 | |
85 | # | |
86 | # Check for one bad and then some good revisions. | |
87 | # | |
88 | has_double_dash=0 | |
89 | for arg; do | |
90 | case "$arg" in --) has_double_dash=1; break ;; esac | |
91 | done | |
92 | orig_args=$(sq "$@") | |
93 | bad_seen=0 | |
94 | while [ $# -gt 0 ]; do | |
95 | arg="$1" | |
96 | case "$arg" in | |
97 | --) | |
98 | shift | |
99 | break | |
100 | ;; | |
101 | *) | |
102 | rev=$(git-rev-parse --verify "$arg^{commit}" 2>/dev/null) || { | |
103 | test $has_double_dash -eq 1 && | |
104 | die "'$arg' does not appear to be a valid revision" | |
105 | break | |
106 | } | |
107 | if [ $bad_seen -eq 0 ]; then | |
108 | bad_seen=1 | |
109 | bisect_write_bad "$rev" | |
110 | else | |
111 | bisect_write_good "$rev" | |
112 | fi | |
113 | shift | |
114 | ;; | |
115 | esac | |
116 | done | |
117 | ||
118 | sq "$@" >"$GIT_DIR/BISECT_NAMES" | |
e9a45d75 | 119 | { |
9754563c | 120 | printf "git-bisect start" |
38a47fd6 CC |
121 | echo "$orig_args" |
122 | } >>"$GIT_DIR/BISECT_LOG" | |
123 | bisect_auto_next | |
8cc6a083 LT |
124 | } |
125 | ||
126 | bisect_bad() { | |
127 | bisect_autostart | |
cc9f24d0 JH |
128 | case "$#" in |
129 | 0) | |
130 | rev=$(git-rev-parse --verify HEAD) ;; | |
131 | 1) | |
cc65343a | 132 | rev=$(git-rev-parse --verify "$1^{commit}") ;; |
cc9f24d0 JH |
133 | *) |
134 | usage ;; | |
135 | esac || exit | |
38a47fd6 | 136 | bisect_write_bad "$rev" |
e204de28 | 137 | echo "git-bisect bad $rev" >>"$GIT_DIR/BISECT_LOG" |
8cc6a083 LT |
138 | bisect_auto_next |
139 | } | |
140 | ||
38a47fd6 CC |
141 | bisect_write_bad() { |
142 | rev="$1" | |
143 | echo "$rev" >"$GIT_DIR/refs/bisect/bad" | |
144 | echo "# bad: "$(git-show-branch $rev) >>"$GIT_DIR/BISECT_LOG" | |
145 | } | |
146 | ||
8cc6a083 LT |
147 | bisect_good() { |
148 | bisect_autostart | |
149 | case "$#" in | |
150 | 0) revs=$(git-rev-parse --verify HEAD) || exit ;; | |
cc9f24d0 JH |
151 | *) revs=$(git-rev-parse --revs-only --no-flags "$@") && |
152 | test '' != "$revs" || die "Bad rev input: $@" ;; | |
8cc6a083 LT |
153 | esac |
154 | for rev in $revs | |
155 | do | |
cc65343a | 156 | rev=$(git-rev-parse --verify "$rev^{commit}") || exit |
38a47fd6 | 157 | bisect_write_good "$rev" |
e204de28 | 158 | echo "git-bisect good $rev" >>"$GIT_DIR/BISECT_LOG" |
38a47fd6 | 159 | |
8cc6a083 LT |
160 | done |
161 | bisect_auto_next | |
162 | } | |
163 | ||
38a47fd6 CC |
164 | bisect_write_good() { |
165 | rev="$1" | |
166 | echo "$rev" >"$GIT_DIR/refs/bisect/good-$rev" | |
167 | echo "# good: "$(git-show-branch $rev) >>"$GIT_DIR/BISECT_LOG" | |
168 | } | |
169 | ||
8cc6a083 | 170 | bisect_next_check() { |
0a5280a9 JH |
171 | missing_good= missing_bad= |
172 | git show-ref -q --verify refs/bisect/bad || missing_bad=t | |
173 | test -n "$(git for-each-ref "refs/bisect/good-*")" || missing_good=t | |
6fecf191 | 174 | |
0a5280a9 JH |
175 | case "$missing_good,$missing_bad,$1" in |
176 | ,,*) | |
177 | : have both good and bad - ok | |
178 | ;; | |
179 | *,) | |
180 | # do not have both but not asked to fail - just report. | |
181 | false | |
182 | ;; | |
183 | t,,good) | |
184 | # have bad but not good. we could bisect although | |
185 | # this is less optimum. | |
186 | echo >&2 'Warning: bisecting only with a bad commit.' | |
187 | if test -t 0 | |
188 | then | |
189 | printf >&2 'Are you sure [Y/n]? ' | |
190 | case "$(read yesno)" in [Nn]*) exit 1 ;; esac | |
191 | fi | |
192 | : bisect without good... | |
193 | ;; | |
8cc6a083 | 194 | *) |
0a5280a9 JH |
195 | THEN='' |
196 | test -d "$GIT_DIR/refs/bisect" || { | |
197 | echo >&2 'You need to start by "git bisect start".' | |
198 | THEN='then ' | |
199 | } | |
200 | echo >&2 'You '$THEN'need to give me at least one good' \ | |
201 | 'and one bad revisions.' | |
202 | echo >&2 '(You can use "git bisect bad" and' \ | |
203 | '"git bisect good" for that.)' | |
204 | exit 1 ;; | |
8cc6a083 LT |
205 | esac |
206 | } | |
207 | ||
208 | bisect_auto_next() { | |
434d036f | 209 | bisect_next_check && bisect_next || : |
8cc6a083 LT |
210 | } |
211 | ||
212 | bisect_next() { | |
213 | case "$#" in 0) ;; *) usage ;; esac | |
214 | bisect_autostart | |
0a5280a9 JH |
215 | bisect_next_check good |
216 | ||
8cc6a083 | 217 | bad=$(git-rev-parse --verify refs/bisect/bad) && |
0a5280a9 JH |
218 | good=$(git for-each-ref --format='^%(objectname)' \ |
219 | "refs/bisect/good-*" | tr '[\012]' ' ') && | |
220 | eval="git-rev-list --bisect-vars $good $bad --" && | |
221 | eval="$eval $(cat "$GIT_DIR/BISECT_NAMES")" && | |
222 | eval=$(eval "$eval") && | |
223 | eval "$eval" || exit | |
224 | ||
225 | if [ -z "$bisect_rev" ]; then | |
226 | echo "$bad was both good and bad" | |
227 | exit 1 | |
670f5fe3 | 228 | fi |
0a5280a9 JH |
229 | if [ "$bisect_rev" = "$bad" ]; then |
230 | echo "$bisect_rev is first bad commit" | |
231 | git-diff-tree --pretty $bisect_rev | |
232 | exit 0 | |
8cc6a083 | 233 | fi |
0a5280a9 JH |
234 | |
235 | echo "Bisecting: $bisect_nr revisions left to test after this" | |
236 | echo "$bisect_rev" >"$GIT_DIR/refs/heads/new-bisect" | |
08f16750 | 237 | git checkout -q new-bisect || exit |
8cc6a083 | 238 | mv "$GIT_DIR/refs/heads/new-bisect" "$GIT_DIR/refs/heads/bisect" && |
8098a178 | 239 | GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD refs/heads/bisect |
0a5280a9 | 240 | git-show-branch "$bisect_rev" |
8cc6a083 LT |
241 | } |
242 | ||
cc9f24d0 JH |
243 | bisect_visualize() { |
244 | bisect_next_check fail | |
e9a45d75 JH |
245 | not=`cd "$GIT_DIR/refs" && echo bisect/good-*` |
246 | eval gitk bisect/bad --not $not -- $(cat "$GIT_DIR/BISECT_NAMES") | |
cc9f24d0 JH |
247 | } |
248 | ||
8cc6a083 LT |
249 | bisect_reset() { |
250 | case "$#" in | |
810255fd PB |
251 | 0) if [ -s "$GIT_DIR/head-name" ]; then |
252 | branch=`cat "$GIT_DIR/head-name"` | |
253 | else | |
254 | branch=master | |
255 | fi ;; | |
c0ce981f | 256 | 1) git-show-ref --verify --quiet -- "refs/heads/$1" || { |
8cc6a083 LT |
257 | echo >&2 "$1 does not seem to be a valid branch" |
258 | exit 1 | |
259 | } | |
260 | branch="$1" ;; | |
261 | *) | |
262 | usage ;; | |
263 | esac | |
9b709e47 | 264 | if git checkout "$branch"; then |
38a47fd6 CC |
265 | rm -f "$GIT_DIR/head-name" |
266 | bisect_clean_state | |
9b709e47 | 267 | fi |
e204de28 JH |
268 | } |
269 | ||
38a47fd6 CC |
270 | bisect_clean_state() { |
271 | rm -fr "$GIT_DIR/refs/bisect" | |
272 | rm -f "$GIT_DIR/refs/heads/bisect" | |
273 | rm -f "$GIT_DIR/BISECT_LOG" | |
274 | rm -f "$GIT_DIR/BISECT_NAMES" | |
275 | rm -f "$GIT_DIR/BISECT_RUN" | |
276 | } | |
277 | ||
e204de28 JH |
278 | bisect_replay () { |
279 | test -r "$1" || { | |
280 | echo >&2 "cannot read $1 for replaying" | |
281 | exit 1 | |
282 | } | |
283 | bisect_reset | |
284 | while read bisect command rev | |
285 | do | |
286 | test "$bisect" = "git-bisect" || continue | |
287 | case "$command" in | |
288 | start) | |
e9a45d75 JH |
289 | cmd="bisect_start $rev" |
290 | eval "$cmd" | |
e204de28 JH |
291 | ;; |
292 | good) | |
293 | echo "$rev" >"$GIT_DIR/refs/bisect/good-$rev" | |
294 | echo "# good: "$(git-show-branch $rev) >>"$GIT_DIR/BISECT_LOG" | |
295 | echo "git-bisect good $rev" >>"$GIT_DIR/BISECT_LOG" | |
296 | ;; | |
297 | bad) | |
298 | echo "$rev" >"$GIT_DIR/refs/bisect/bad" | |
299 | echo "# bad: "$(git-show-branch $rev) >>"$GIT_DIR/BISECT_LOG" | |
300 | echo "git-bisect bad $rev" >>"$GIT_DIR/BISECT_LOG" | |
301 | ;; | |
302 | *) | |
303 | echo >&2 "?? what are you talking about?" | |
304 | exit 1 ;; | |
305 | esac | |
306 | done <"$1" | |
307 | bisect_auto_next | |
8cc6a083 LT |
308 | } |
309 | ||
a17c4101 | 310 | bisect_run () { |
83020120 CC |
311 | bisect_next_check fail |
312 | ||
a17c4101 CC |
313 | while true |
314 | do | |
315 | echo "running $@" | |
316 | "$@" | |
317 | res=$? | |
318 | ||
319 | # Check for really bad run error. | |
320 | if [ $res -lt 0 -o $res -ge 128 ]; then | |
321 | echo >&2 "bisect run failed:" | |
322 | echo >&2 "exit code $res from '$@' is < 0 or >= 128" | |
323 | exit $res | |
324 | fi | |
325 | ||
326 | # Use "bisect_good" or "bisect_bad" | |
327 | # depending on run success or failure. | |
328 | if [ $res -gt 0 ]; then | |
329 | next_bisect='bisect_bad' | |
330 | else | |
331 | next_bisect='bisect_good' | |
332 | fi | |
333 | ||
334 | # We have to use a subshell because bisect_good or | |
335 | # bisect_bad functions can exit. | |
336 | ( $next_bisect > "$GIT_DIR/BISECT_RUN" ) | |
337 | res=$? | |
338 | ||
339 | cat "$GIT_DIR/BISECT_RUN" | |
340 | ||
341 | if [ $res -ne 0 ]; then | |
342 | echo >&2 "bisect run failed:" | |
343 | echo >&2 "$next_bisect exited with error code $res" | |
344 | exit $res | |
345 | fi | |
346 | ||
347 | if grep "is first bad commit" "$GIT_DIR/BISECT_RUN" > /dev/null; then | |
348 | echo "bisect run success" | |
349 | exit 0; | |
350 | fi | |
351 | ||
352 | done | |
353 | } | |
354 | ||
355 | ||
8cc6a083 LT |
356 | case "$#" in |
357 | 0) | |
358 | usage ;; | |
359 | *) | |
360 | cmd="$1" | |
361 | shift | |
362 | case "$cmd" in | |
363 | start) | |
364 | bisect_start "$@" ;; | |
365 | bad) | |
366 | bisect_bad "$@" ;; | |
367 | good) | |
368 | bisect_good "$@" ;; | |
369 | next) | |
370 | # Not sure we want "next" at the UI level anymore. | |
371 | bisect_next "$@" ;; | |
cc9f24d0 JH |
372 | visualize) |
373 | bisect_visualize "$@" ;; | |
8cc6a083 LT |
374 | reset) |
375 | bisect_reset "$@" ;; | |
e204de28 JH |
376 | replay) |
377 | bisect_replay "$@" ;; | |
378 | log) | |
379 | cat "$GIT_DIR/BISECT_LOG" ;; | |
a17c4101 CC |
380 | run) |
381 | bisect_run "$@" ;; | |
8cc6a083 LT |
382 | *) |
383 | usage ;; | |
384 | esac | |
385 | esac |