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Commit | Line | Data |
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8cc6a083 | 1 | #!/bin/sh |
d025524d FK |
2 | |
3 | USAGE='[start|bad|good|next|reset|visualize]' | |
4 | LONG_USAGE='git bisect start [<pathspec>] reset bisect state and start bisection. | |
5 | git bisect bad [<rev>] mark <rev> a known-bad revision. | |
6 | git bisect good [<rev>...] mark <rev>... known-good revisions. | |
7 | git bisect next find next bisection to test and check it out. | |
8 | git bisect reset [<branch>] finish bisection search and go back to branch. | |
9 | git bisect visualize show bisect status in gitk. | |
10 | git bisect replay <logfile> replay bisection log | |
11 | git bisect log show bisect log.' | |
12 | ||
ae2b0f15 | 13 | . git-sh-setup |
8cc6a083 | 14 | |
e9a45d75 JH |
15 | sq() { |
16 | perl -e ' | |
17 | for (@ARGV) { | |
18 | s/'\''/'\'\\\\\'\''/g; | |
19 | print " '\''$_'\''"; | |
20 | } | |
21 | print "\n"; | |
22 | ' "$@" | |
23 | } | |
24 | ||
8cc6a083 LT |
25 | bisect_autostart() { |
26 | test -d "$GIT_DIR/refs/bisect" || { | |
27 | echo >&2 'You need to start by "git bisect start"' | |
28 | if test -t 0 | |
29 | then | |
30 | echo >&2 -n 'Do you want me to do it for you [Y/n]? ' | |
31 | read yesno | |
32 | case "$yesno" in | |
33 | [Nn]*) | |
34 | exit ;; | |
35 | esac | |
36 | bisect_start | |
37 | else | |
38 | exit 1 | |
39 | fi | |
40 | } | |
41 | } | |
42 | ||
43 | bisect_start() { | |
8cc6a083 LT |
44 | # |
45 | # Verify HEAD. If we were bisecting before this, reset to the | |
46 | # top-of-line master first! | |
47 | # | |
8098a178 JH |
48 | head=$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD) || |
49 | die "Bad HEAD - I need a symbolic ref" | |
8cc6a083 LT |
50 | case "$head" in |
51 | refs/heads/bisect*) | |
810255fd PB |
52 | if [ -s "$GIT_DIR/head-name" ]; then |
53 | branch=`cat "$GIT_DIR/head-name"` | |
54 | else | |
55 | branch=master | |
56 | fi | |
57 | git checkout $branch || exit | |
8cc6a083 LT |
58 | ;; |
59 | refs/heads/*) | |
810255fd PB |
60 | [ -s "$GIT_DIR/head-name" ] && die "won't bisect on seeked tree" |
61 | echo "$head" | sed 's#^refs/heads/##' >"$GIT_DIR/head-name" | |
8cc6a083 LT |
62 | ;; |
63 | *) | |
8098a178 | 64 | die "Bad HEAD - strange symbolic ref" |
8cc6a083 LT |
65 | ;; |
66 | esac | |
67 | ||
68 | # | |
69 | # Get rid of any old bisect state | |
70 | # | |
71 | rm -f "$GIT_DIR/refs/heads/bisect" | |
72 | rm -rf "$GIT_DIR/refs/bisect/" | |
73 | mkdir "$GIT_DIR/refs/bisect" | |
e9a45d75 | 74 | { |
9754563c | 75 | printf "git-bisect start" |
e9a45d75 JH |
76 | sq "$@" |
77 | } >"$GIT_DIR/BISECT_LOG" | |
78 | sq "$@" >"$GIT_DIR/BISECT_NAMES" | |
8cc6a083 LT |
79 | } |
80 | ||
81 | bisect_bad() { | |
82 | bisect_autostart | |
cc9f24d0 JH |
83 | case "$#" in |
84 | 0) | |
85 | rev=$(git-rev-parse --verify HEAD) ;; | |
86 | 1) | |
87 | rev=$(git-rev-parse --verify "$1") ;; | |
88 | *) | |
89 | usage ;; | |
90 | esac || exit | |
e204de28 JH |
91 | echo "$rev" >"$GIT_DIR/refs/bisect/bad" |
92 | echo "# bad: "$(git-show-branch $rev) >>"$GIT_DIR/BISECT_LOG" | |
93 | echo "git-bisect bad $rev" >>"$GIT_DIR/BISECT_LOG" | |
8cc6a083 LT |
94 | bisect_auto_next |
95 | } | |
96 | ||
97 | bisect_good() { | |
98 | bisect_autostart | |
99 | case "$#" in | |
100 | 0) revs=$(git-rev-parse --verify HEAD) || exit ;; | |
cc9f24d0 JH |
101 | *) revs=$(git-rev-parse --revs-only --no-flags "$@") && |
102 | test '' != "$revs" || die "Bad rev input: $@" ;; | |
8cc6a083 LT |
103 | esac |
104 | for rev in $revs | |
105 | do | |
cc9f24d0 JH |
106 | rev=$(git-rev-parse --verify "$rev") || exit |
107 | echo "$rev" >"$GIT_DIR/refs/bisect/good-$rev" | |
e204de28 JH |
108 | echo "# good: "$(git-show-branch $rev) >>"$GIT_DIR/BISECT_LOG" |
109 | echo "git-bisect good $rev" >>"$GIT_DIR/BISECT_LOG" | |
8cc6a083 LT |
110 | done |
111 | bisect_auto_next | |
112 | } | |
113 | ||
114 | bisect_next_check() { | |
115 | next_ok=no | |
116 | test -f "$GIT_DIR/refs/bisect/bad" && | |
117 | case "$(cd "$GIT_DIR" && echo refs/bisect/good-*)" in | |
118 | refs/bisect/good-\*) ;; | |
119 | *) next_ok=yes ;; | |
120 | esac | |
121 | case "$next_ok,$1" in | |
122 | no,) false ;; | |
123 | no,fail) | |
124 | echo >&2 'You need to give me at least one good and one bad revisions.' | |
125 | exit 1 ;; | |
126 | *) | |
127 | true ;; | |
128 | esac | |
129 | } | |
130 | ||
131 | bisect_auto_next() { | |
434d036f | 132 | bisect_next_check && bisect_next || : |
8cc6a083 LT |
133 | } |
134 | ||
135 | bisect_next() { | |
136 | case "$#" in 0) ;; *) usage ;; esac | |
137 | bisect_autostart | |
138 | bisect_next_check fail | |
139 | bad=$(git-rev-parse --verify refs/bisect/bad) && | |
140 | good=$(git-rev-parse --sq --revs-only --not \ | |
141 | $(cd "$GIT_DIR" && ls refs/bisect/good-*)) && | |
b3cfd939 | 142 | rev=$(eval "git-rev-list --bisect $good $bad -- $(cat $GIT_DIR/BISECT_NAMES)") || exit |
670f5fe3 LT |
143 | if [ -z "$rev" ]; then |
144 | echo "$bad was both good and bad" | |
145 | exit 1 | |
146 | fi | |
147 | if [ "$rev" = "$bad" ]; then | |
7f47e72f JH |
148 | echo "$rev is first bad commit" |
149 | git-diff-tree --pretty $rev | |
8cc6a083 LT |
150 | exit 0 |
151 | fi | |
b3cfd939 | 152 | nr=$(eval "git-rev-list $rev $good -- $(cat $GIT_DIR/BISECT_NAMES)" | wc -l) || exit |
8cc6a083 LT |
153 | echo "Bisecting: $nr revisions left to test after this" |
154 | echo "$rev" > "$GIT_DIR/refs/heads/new-bisect" | |
155 | git checkout new-bisect || exit | |
156 | mv "$GIT_DIR/refs/heads/new-bisect" "$GIT_DIR/refs/heads/bisect" && | |
8098a178 | 157 | GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD refs/heads/bisect |
e204de28 | 158 | git-show-branch "$rev" |
8cc6a083 LT |
159 | } |
160 | ||
cc9f24d0 JH |
161 | bisect_visualize() { |
162 | bisect_next_check fail | |
e9a45d75 JH |
163 | not=`cd "$GIT_DIR/refs" && echo bisect/good-*` |
164 | eval gitk bisect/bad --not $not -- $(cat "$GIT_DIR/BISECT_NAMES") | |
cc9f24d0 JH |
165 | } |
166 | ||
8cc6a083 LT |
167 | bisect_reset() { |
168 | case "$#" in | |
810255fd PB |
169 | 0) if [ -s "$GIT_DIR/head-name" ]; then |
170 | branch=`cat "$GIT_DIR/head-name"` | |
171 | else | |
172 | branch=master | |
173 | fi ;; | |
8cc6a083 LT |
174 | 1) test -f "$GIT_DIR/refs/heads/$1" || { |
175 | echo >&2 "$1 does not seem to be a valid branch" | |
176 | exit 1 | |
177 | } | |
178 | branch="$1" ;; | |
179 | *) | |
180 | usage ;; | |
181 | esac | |
182 | git checkout "$branch" && | |
183 | rm -fr "$GIT_DIR/refs/bisect" | |
810255fd | 184 | rm -f "$GIT_DIR/refs/heads/bisect" "$GIT_DIR/head-name" |
e204de28 | 185 | rm -f "$GIT_DIR/BISECT_LOG" |
4631c003 | 186 | rm -f "$GIT_DIR/BISECT_NAMES" |
e204de28 JH |
187 | } |
188 | ||
189 | bisect_replay () { | |
190 | test -r "$1" || { | |
191 | echo >&2 "cannot read $1 for replaying" | |
192 | exit 1 | |
193 | } | |
194 | bisect_reset | |
195 | while read bisect command rev | |
196 | do | |
197 | test "$bisect" = "git-bisect" || continue | |
198 | case "$command" in | |
199 | start) | |
e9a45d75 JH |
200 | cmd="bisect_start $rev" |
201 | eval "$cmd" | |
e204de28 JH |
202 | ;; |
203 | good) | |
204 | echo "$rev" >"$GIT_DIR/refs/bisect/good-$rev" | |
205 | echo "# good: "$(git-show-branch $rev) >>"$GIT_DIR/BISECT_LOG" | |
206 | echo "git-bisect good $rev" >>"$GIT_DIR/BISECT_LOG" | |
207 | ;; | |
208 | bad) | |
209 | echo "$rev" >"$GIT_DIR/refs/bisect/bad" | |
210 | echo "# bad: "$(git-show-branch $rev) >>"$GIT_DIR/BISECT_LOG" | |
211 | echo "git-bisect bad $rev" >>"$GIT_DIR/BISECT_LOG" | |
212 | ;; | |
213 | *) | |
214 | echo >&2 "?? what are you talking about?" | |
215 | exit 1 ;; | |
216 | esac | |
217 | done <"$1" | |
218 | bisect_auto_next | |
8cc6a083 LT |
219 | } |
220 | ||
221 | case "$#" in | |
222 | 0) | |
223 | usage ;; | |
224 | *) | |
225 | cmd="$1" | |
226 | shift | |
227 | case "$cmd" in | |
228 | start) | |
229 | bisect_start "$@" ;; | |
230 | bad) | |
231 | bisect_bad "$@" ;; | |
232 | good) | |
233 | bisect_good "$@" ;; | |
234 | next) | |
235 | # Not sure we want "next" at the UI level anymore. | |
236 | bisect_next "$@" ;; | |
cc9f24d0 JH |
237 | visualize) |
238 | bisect_visualize "$@" ;; | |
8cc6a083 LT |
239 | reset) |
240 | bisect_reset "$@" ;; | |
e204de28 JH |
241 | replay) |
242 | bisect_replay "$@" ;; | |
243 | log) | |
244 | cat "$GIT_DIR/BISECT_LOG" ;; | |
8cc6a083 LT |
245 | *) |
246 | usage ;; | |
247 | esac | |
248 | esac |