git-bisect.sh

   1 #!/bin/sh
   2
   3 USAGE='[help|start|bad|good|new|old|terms|skip|next|reset|visualize|view|replay|log|run]'
   4 LONG_USAGE='git bisect help
   5         print this long help message.
   6 git bisect start [--term-{new,bad}=<term> --term-{old,good}=<term>]
   7                  [--no-checkout] [--first-parent] [<bad> [<good>...]] [--] [<pathspec>...]
   8         reset bisect state and start bisection.
   9 git bisect (bad|new) [<rev>]
  10         mark <rev> a known-bad revision/
  11                 a revision after change in a given property.
  12 git bisect (good|old) [<rev>...]
  13         mark <rev>... known-good revisions/
  14                 revisions before change in a given property.
  15 git bisect terms [--term-good | --term-bad]
  16         show the terms used for old and new commits (default: bad, good)
  17 git bisect skip [(<rev>|<range>)...]
  18         mark <rev>... untestable revisions.
  19 git bisect next
  20         find next bisection to test and check it out.
  21 git bisect reset [<commit>]
  22         finish bisection search and go back to commit.
  23 git bisect (visualize|view)
  24         show bisect status in gitk.
  25 git bisect replay <logfile>
  26         replay bisection log.
  27 git bisect log
  28         show bisect log.
  29 git bisect run <cmd>...
  30         use <cmd>... to automatically bisect.
  31
  32 Please use "git help bisect" to get the full man page.'
  33
  34 OPTIONS_SPEC=
  35 . git-sh-setup
  36
  37 _x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
  38 _x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
  39 TERM_BAD=bad
  40 TERM_GOOD=good
  41
  42 bisect_skip() {
  43         all=''
  44         for arg in "$@"
  45         do
  46                 case "$arg" in
  47                 *..*)
  48                         revs=$(git rev-list "$arg") || die "$(eval_gettext "Bad rev input: \$arg")" ;;
  49                 *)
  50                         revs=$(git rev-parse --sq-quote "$arg") ;;
  51                 esac
  52                 all="$all $revs"
  53         done
  54         eval git bisect--helper --bisect-state 'skip' $all
  55 }
  56
  57 bisect_visualize() {
  58         git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD fail || exit
  59
  60         if test $# = 0
  61         then
  62                 if test -n "${DISPLAY+set}${SESSIONNAME+set}${MSYSTEM+set}${SECURITYSESSIONID+set}" &&
  63                         type gitk >/dev/null 2>&1
  64                 then
  65                         set gitk
  66                 else
  67                         set git log
  68                 fi
  69         else
  70                 case "$1" in
  71                 git*|tig) ;;
  72                 -*)     set git log "$@" ;;
  73                 *)      set git "$@" ;;
  74                 esac
  75         fi
  76
  77         eval '"$@"' --bisect -- $(cat "$GIT_DIR/BISECT_NAMES")
  78 }
  79
  80 bisect_replay () {
  81         file="$1"
  82         test "$#" -eq 1 || die "$(gettext "No logfile given")"
  83         test -r "$file" || die "$(eval_gettext "cannot read \$file for replaying")"
  84         git bisect--helper --bisect-reset || exit
  85         oIFS="$IFS" IFS="$IFS$(printf '\015')"
  86         while read git bisect command rev tail
  87         do
  88                 test "$git $bisect" = "git bisect" || test "$git" = "git-bisect" || continue
  89                 if test "$git" = "git-bisect"
  90                 then
  91                         rev="$command"
  92                         command="$bisect"
  93                 fi
  94                 get_terms
  95                 git bisect--helper --check-and-set-terms "$command" "$TERM_GOOD" "$TERM_BAD" || exit
  96                 get_terms
  97                 case "$command" in
  98                 start)
  99                         eval "git bisect--helper --bisect-start $rev $tail" ;;
 100                 "$TERM_GOOD"|"$TERM_BAD"|skip)
 101                         git bisect--helper --bisect-write "$command" "$rev" "$TERM_GOOD" "$TERM_BAD" || exit;;
 102                 terms)
 103                         git bisect--helper --bisect-terms $rev || exit;;
 104                 *)
 105                         die "$(gettext "?? what are you talking about?")" ;;
 106                 esac
 107         done <"$file"
 108         IFS="$oIFS"
 109         git bisect--helper --bisect-auto-next || exit
 110 }
 111
 112 bisect_run () {
 113         git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD fail || exit
 114
 115         test -n "$*" || die "$(gettext "bisect run failed: no command provided.")"
 116
 117         while true
 118         do
 119                 command="$@"
 120                 eval_gettextln "running \$command"
 121                 "$@"
 122                 res=$?
 123
 124                 # Check for really bad run error.
 125                 if [ $res -lt 0 -o $res -ge 128 ]
 126                 then
 127                         eval_gettextln "bisect run failed:
 128 exit code \$res from '\$command' is < 0 or >= 128" >&2
 129                         exit $res
 130                 fi
 131
 132                 # Find current state depending on run success or failure.
 133                 # A special exit code of 125 means cannot test.
 134                 if [ $res -eq 125 ]
 135                 then
 136                         state='skip'
 137                 elif [ $res -gt 0 ]
 138                 then
 139                         state="$TERM_BAD"
 140                 else
 141                         state="$TERM_GOOD"
 142                 fi
 143
 144                 git bisect--helper --bisect-state $state >"$GIT_DIR/BISECT_RUN"
 145                 res=$?
 146
 147                 cat "$GIT_DIR/BISECT_RUN"
 148
 149                 if sane_grep "first $TERM_BAD commit could be any of" "$GIT_DIR/BISECT_RUN" \
 150                         >/dev/null
 151                 then
 152                         gettextln "bisect run cannot continue any more" >&2
 153                         exit $res
 154                 fi
 155
 156                 if [ $res -ne 0 ]
 157                 then
 158                         eval_gettextln "bisect run failed:
 159 'bisect-state \$state' exited with error code \$res" >&2
 160                         exit $res
 161                 fi
 162
 163                 if sane_grep "is the first $TERM_BAD commit" "$GIT_DIR/BISECT_RUN" >/dev/null
 164                 then
 165                         gettextln "bisect run success"
 166                         exit 0;
 167                 fi
 168
 169         done
 170 }
 171
 172 bisect_log () {
 173         test -s "$GIT_DIR/BISECT_LOG" || die "$(gettext "We are not bisecting.")"
 174         cat "$GIT_DIR/BISECT_LOG"
 175 }
 176
 177 get_terms () {
 178         if test -s "$GIT_DIR/BISECT_TERMS"
 179         then
 180                 {
 181                 read TERM_BAD
 182                 read TERM_GOOD
 183                 } <"$GIT_DIR/BISECT_TERMS"
 184         fi
 185 }
 186
 187 case "$#" in
 188 0)
 189         usage ;;
 190 *)
 191         cmd="$1"
 192         get_terms
 193         shift
 194         case "$cmd" in
 195         help)
 196                 git bisect -h ;;
 197         start)
 198                 git bisect--helper --bisect-start "$@" ;;
 199         bad|good|new|old|"$TERM_BAD"|"$TERM_GOOD")
 200                 git bisect--helper --bisect-state "$cmd" "$@" ;;
 201         skip)
 202                 bisect_skip "$@" ;;
 203         next)
 204                 # Not sure we want "next" at the UI level anymore.
 205                 git bisect--helper --bisect-next "$@" || exit ;;
 206         visualize|view)
 207                 bisect_visualize "$@" ;;
 208         reset)
 209                 git bisect--helper --bisect-reset "$@" ;;
 210         replay)
 211                 bisect_replay "$@" ;;
 212         log)
 213                 bisect_log ;;
 214         run)
 215                 bisect_run "$@" ;;
 216         terms)
 217                 git bisect--helper --bisect-terms "$@" || exit;;
 218         *)
 219                 usage ;;
 220         esac
 221 esac