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_visualize() {
  43         git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD fail || exit
  44
  45         if test $# = 0
  46         then
  47                 if test -n "${DISPLAY+set}${SESSIONNAME+set}${MSYSTEM+set}${SECURITYSESSIONID+set}" &&
  48                         type gitk >/dev/null 2>&1
  49                 then
  50                         set gitk
  51                 else
  52                         set git log
  53                 fi
  54         else
  55                 case "$1" in
  56                 git*|tig) ;;
  57                 -*)     set git log "$@" ;;
  58                 *)      set git "$@" ;;
  59                 esac
  60         fi
  61
  62         eval '"$@"' --bisect -- $(cat "$GIT_DIR/BISECT_NAMES")
  63 }
  64
  65 bisect_run () {
  66         git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD fail || exit
  67
  68         test -n "$*" || die "$(gettext "bisect run failed: no command provided.")"
  69
  70         while true
  71         do
  72                 command="$@"
  73                 eval_gettextln "running \$command"
  74                 "$@"
  75                 res=$?
  76
  77                 # Check for really bad run error.
  78                 if [ $res -lt 0 -o $res -ge 128 ]
  79                 then
  80                         eval_gettextln "bisect run failed:
  81 exit code \$res from '\$command' is < 0 or >= 128" >&2
  82                         exit $res
  83                 fi
  84
  85                 # Find current state depending on run success or failure.
  86                 # A special exit code of 125 means cannot test.
  87                 if [ $res -eq 125 ]
  88                 then
  89                         state='skip'
  90                 elif [ $res -gt 0 ]
  91                 then
  92                         state="$TERM_BAD"
  93                 else
  94                         state="$TERM_GOOD"
  95                 fi
  96
  97                 git bisect--helper --bisect-state $state >"$GIT_DIR/BISECT_RUN"
  98                 res=$?
  99
 100                 cat "$GIT_DIR/BISECT_RUN"
 101
 102                 if sane_grep "first $TERM_BAD commit could be any of" "$GIT_DIR/BISECT_RUN" \
 103                         >/dev/null
 104                 then
 105                         gettextln "bisect run cannot continue any more" >&2
 106                         exit $res
 107                 fi
 108
 109                 if [ $res -ne 0 ]
 110                 then
 111                         eval_gettextln "bisect run failed:
 112 'bisect-state \$state' exited with error code \$res" >&2
 113                         exit $res
 114                 fi
 115
 116                 if sane_grep "is the first $TERM_BAD commit" "$GIT_DIR/BISECT_RUN" >/dev/null
 117                 then
 118                         gettextln "bisect run success"
 119                         exit 0;
 120                 fi
 121
 122         done
 123 }
 124
 125 get_terms () {
 126         if test -s "$GIT_DIR/BISECT_TERMS"
 127         then
 128                 {
 129                 read TERM_BAD
 130                 read TERM_GOOD
 131                 } <"$GIT_DIR/BISECT_TERMS"
 132         fi
 133 }
 134
 135 case "$#" in
 136 0)
 137         usage ;;
 138 *)
 139         cmd="$1"
 140         get_terms
 141         shift
 142         case "$cmd" in
 143         help)
 144                 git bisect -h ;;
 145         start)
 146                 git bisect--helper --bisect-start "$@" ;;
 147         bad|good|new|old|"$TERM_BAD"|"$TERM_GOOD")
 148                 git bisect--helper --bisect-state "$cmd" "$@" ;;
 149         skip)
 150                 git bisect--helper --bisect-skip "$@" || exit;;
 151         next)
 152                 # Not sure we want "next" at the UI level anymore.
 153                 git bisect--helper --bisect-next "$@" || exit ;;
 154         visualize|view)
 155                 bisect_visualize "$@" ;;
 156         reset)
 157                 git bisect--helper --bisect-reset "$@" ;;
 158         replay)
 159                 git bisect--helper --bisect-replay "$@" || exit;;
 160         log)
 161                 git bisect--helper --bisect-log || exit ;;
 162         run)
 163                 bisect_run "$@" ;;
 164         terms)
 165                 git bisect--helper --bisect-terms "$@" || exit;;
 166         *)
 167                 usage ;;
 168         esac
 169 esac