#!/bin/sh
 
 set -e
 

 if test "bisect-create" = "`basename $0`" ; then
     echo tools/ffbisect created
     git show master:tools/bisect-create > tools/ffbisect

     chmod u+x tools/ffbisect
     exit 1
 fi
 

 if ! git show master:tools/bisect-create | diff - tools/ffbisect > /dev/null ; then

     echo updating tools/ffbisect script to HEAD.

     git show master:tools/bisect-create > tools/ffbisect

     chmod u+x tools/ffbisect
     tools/ffbisect $*
     exit 0
 fi
 

 case "$1" in
     need)
         case $2 in
             ffmpeg|ffplay|ffprobe|ffserver)

                 echo $2.c >> tools/bisect.need

             ;;
         esac
     ;;
     start|reset)

         echo . > tools/bisect.need

         git bisect $*
     ;;
     skip)
         git bisect $*
     ;;
     good|bad)
         git bisect $*
 

         until ls `cat tools/bisect.need` > /dev/null 2> /dev/null; do

             git bisect skip || break
         done
     ;;

     run)
        shift # remove "run" from arguments
        git bisect run sh -c "ls \`cat tools/bisect.need\` > /dev/null 2> /dev/null || exit 125; \"\$@\"" sh "$@"
     ;;

 esac