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Commit | Line | Data |
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8cc6a083 | 1 | #!/bin/sh |
215a7ad1 | 2 | . git-sh-setup || dir "Not a git archive" |
8cc6a083 LT |
3 | |
4 | usage() { | |
cc9f24d0 | 5 | echo >&2 'usage: git bisect [start|bad|good|next|reset|visualize] |
8cc6a083 LT |
6 | git bisect start reset bisect state and start bisection. |
7 | git bisect bad [<rev>] mark <rev> a known-bad revision. | |
8 | git bisect good [<rev>...] mark <rev>... known-good revisions. | |
9 | git bisect next find next bisection to test and check it out. | |
cc9f24d0 | 10 | git bisect reset [<branch>] finish bisection search and go back to branch. |
e204de28 JH |
11 | git bisect visualize show bisect status in gitk. |
12 | git bisect replay <logfile> replay bisection log | |
13 | git bisect log show bisect log.' | |
8cc6a083 LT |
14 | exit 1 |
15 | } | |
16 | ||
17 | bisect_autostart() { | |
18 | test -d "$GIT_DIR/refs/bisect" || { | |
19 | echo >&2 'You need to start by "git bisect start"' | |
20 | if test -t 0 | |
21 | then | |
22 | echo >&2 -n 'Do you want me to do it for you [Y/n]? ' | |
23 | read yesno | |
24 | case "$yesno" in | |
25 | [Nn]*) | |
26 | exit ;; | |
27 | esac | |
28 | bisect_start | |
29 | else | |
30 | exit 1 | |
31 | fi | |
32 | } | |
33 | } | |
34 | ||
35 | bisect_start() { | |
36 | case "$#" in 0) ;; *) usage ;; esac | |
37 | # | |
38 | # Verify HEAD. If we were bisecting before this, reset to the | |
39 | # top-of-line master first! | |
40 | # | |
41 | head=$(readlink $GIT_DIR/HEAD) || die "Bad HEAD - I need a symlink" | |
42 | case "$head" in | |
43 | refs/heads/bisect*) | |
44 | git checkout master || exit | |
45 | ;; | |
46 | refs/heads/*) | |
47 | ;; | |
48 | *) | |
49 | die "Bad HEAD - strange symlink" | |
50 | ;; | |
51 | esac | |
52 | ||
53 | # | |
54 | # Get rid of any old bisect state | |
55 | # | |
56 | rm -f "$GIT_DIR/refs/heads/bisect" | |
57 | rm -rf "$GIT_DIR/refs/bisect/" | |
58 | mkdir "$GIT_DIR/refs/bisect" | |
e204de28 | 59 | echo "git-bisect start" >"$GIT_DIR/BISECT_LOG" |
8cc6a083 LT |
60 | } |
61 | ||
62 | bisect_bad() { | |
63 | bisect_autostart | |
cc9f24d0 JH |
64 | case "$#" in |
65 | 0) | |
66 | rev=$(git-rev-parse --verify HEAD) ;; | |
67 | 1) | |
68 | rev=$(git-rev-parse --verify "$1") ;; | |
69 | *) | |
70 | usage ;; | |
71 | esac || exit | |
e204de28 JH |
72 | echo "$rev" >"$GIT_DIR/refs/bisect/bad" |
73 | echo "# bad: "$(git-show-branch $rev) >>"$GIT_DIR/BISECT_LOG" | |
74 | echo "git-bisect bad $rev" >>"$GIT_DIR/BISECT_LOG" | |
8cc6a083 LT |
75 | bisect_auto_next |
76 | } | |
77 | ||
78 | bisect_good() { | |
79 | bisect_autostart | |
80 | case "$#" in | |
81 | 0) revs=$(git-rev-parse --verify HEAD) || exit ;; | |
cc9f24d0 JH |
82 | *) revs=$(git-rev-parse --revs-only --no-flags "$@") && |
83 | test '' != "$revs" || die "Bad rev input: $@" ;; | |
8cc6a083 LT |
84 | esac |
85 | for rev in $revs | |
86 | do | |
cc9f24d0 JH |
87 | rev=$(git-rev-parse --verify "$rev") || exit |
88 | echo "$rev" >"$GIT_DIR/refs/bisect/good-$rev" | |
e204de28 JH |
89 | echo "# good: "$(git-show-branch $rev) >>"$GIT_DIR/BISECT_LOG" |
90 | echo "git-bisect good $rev" >>"$GIT_DIR/BISECT_LOG" | |
8cc6a083 LT |
91 | done |
92 | bisect_auto_next | |
93 | } | |
94 | ||
95 | bisect_next_check() { | |
96 | next_ok=no | |
97 | test -f "$GIT_DIR/refs/bisect/bad" && | |
98 | case "$(cd "$GIT_DIR" && echo refs/bisect/good-*)" in | |
99 | refs/bisect/good-\*) ;; | |
100 | *) next_ok=yes ;; | |
101 | esac | |
102 | case "$next_ok,$1" in | |
103 | no,) false ;; | |
104 | no,fail) | |
105 | echo >&2 'You need to give me at least one good and one bad revisions.' | |
106 | exit 1 ;; | |
107 | *) | |
108 | true ;; | |
109 | esac | |
110 | } | |
111 | ||
112 | bisect_auto_next() { | |
434d036f | 113 | bisect_next_check && bisect_next || : |
8cc6a083 LT |
114 | } |
115 | ||
116 | bisect_next() { | |
117 | case "$#" in 0) ;; *) usage ;; esac | |
118 | bisect_autostart | |
119 | bisect_next_check fail | |
120 | bad=$(git-rev-parse --verify refs/bisect/bad) && | |
121 | good=$(git-rev-parse --sq --revs-only --not \ | |
122 | $(cd "$GIT_DIR" && ls refs/bisect/good-*)) && | |
123 | rev=$(eval "git-rev-list --bisect $good $bad") || exit | |
670f5fe3 LT |
124 | if [ -z "$rev" ]; then |
125 | echo "$bad was both good and bad" | |
126 | exit 1 | |
127 | fi | |
128 | if [ "$rev" = "$bad" ]; then | |
7f47e72f JH |
129 | echo "$rev is first bad commit" |
130 | git-diff-tree --pretty $rev | |
8cc6a083 LT |
131 | exit 0 |
132 | fi | |
670f5fe3 | 133 | nr=$(eval "git-rev-list $rev $good" | wc -l) || exit |
8cc6a083 LT |
134 | echo "Bisecting: $nr revisions left to test after this" |
135 | echo "$rev" > "$GIT_DIR/refs/heads/new-bisect" | |
136 | git checkout new-bisect || exit | |
137 | mv "$GIT_DIR/refs/heads/new-bisect" "$GIT_DIR/refs/heads/bisect" && | |
138 | ln -sf refs/heads/bisect "$GIT_DIR/HEAD" | |
e204de28 | 139 | git-show-branch "$rev" |
8cc6a083 LT |
140 | } |
141 | ||
cc9f24d0 JH |
142 | bisect_visualize() { |
143 | bisect_next_check fail | |
144 | gitk bisect/bad --not `cd "$GIT_DIR/refs" && echo bisect/good-*` | |
145 | } | |
146 | ||
8cc6a083 LT |
147 | bisect_reset() { |
148 | case "$#" in | |
149 | 0) branch=master ;; | |
150 | 1) test -f "$GIT_DIR/refs/heads/$1" || { | |
151 | echo >&2 "$1 does not seem to be a valid branch" | |
152 | exit 1 | |
153 | } | |
154 | branch="$1" ;; | |
155 | *) | |
156 | usage ;; | |
157 | esac | |
158 | git checkout "$branch" && | |
159 | rm -fr "$GIT_DIR/refs/bisect" | |
e204de28 JH |
160 | rm -f "$GIT_DIR/refs/heads/bisect" |
161 | rm -f "$GIT_DIR/BISECT_LOG" | |
162 | } | |
163 | ||
164 | bisect_replay () { | |
165 | test -r "$1" || { | |
166 | echo >&2 "cannot read $1 for replaying" | |
167 | exit 1 | |
168 | } | |
169 | bisect_reset | |
170 | while read bisect command rev | |
171 | do | |
172 | test "$bisect" = "git-bisect" || continue | |
173 | case "$command" in | |
174 | start) | |
175 | bisect_start | |
176 | ;; | |
177 | good) | |
178 | echo "$rev" >"$GIT_DIR/refs/bisect/good-$rev" | |
179 | echo "# good: "$(git-show-branch $rev) >>"$GIT_DIR/BISECT_LOG" | |
180 | echo "git-bisect good $rev" >>"$GIT_DIR/BISECT_LOG" | |
181 | ;; | |
182 | bad) | |
183 | echo "$rev" >"$GIT_DIR/refs/bisect/bad" | |
184 | echo "# bad: "$(git-show-branch $rev) >>"$GIT_DIR/BISECT_LOG" | |
185 | echo "git-bisect bad $rev" >>"$GIT_DIR/BISECT_LOG" | |
186 | ;; | |
187 | *) | |
188 | echo >&2 "?? what are you talking about?" | |
189 | exit 1 ;; | |
190 | esac | |
191 | done <"$1" | |
192 | bisect_auto_next | |
8cc6a083 LT |
193 | } |
194 | ||
195 | case "$#" in | |
196 | 0) | |
197 | usage ;; | |
198 | *) | |
199 | cmd="$1" | |
200 | shift | |
201 | case "$cmd" in | |
202 | start) | |
203 | bisect_start "$@" ;; | |
204 | bad) | |
205 | bisect_bad "$@" ;; | |
206 | good) | |
207 | bisect_good "$@" ;; | |
208 | next) | |
209 | # Not sure we want "next" at the UI level anymore. | |
210 | bisect_next "$@" ;; | |
cc9f24d0 JH |
211 | visualize) |
212 | bisect_visualize "$@" ;; | |
8cc6a083 LT |
213 | reset) |
214 | bisect_reset "$@" ;; | |
e204de28 JH |
215 | replay) |
216 | bisect_replay "$@" ;; | |
217 | log) | |
218 | cat "$GIT_DIR/BISECT_LOG" ;; | |
8cc6a083 LT |
219 | *) |
220 | usage ;; | |
221 | esac | |
222 | esac |