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