PU

   1 #!/bin/sh
   2 #
   3 # Rebuild "pu" from topic branches.
   4 #
   5
   6 git update-index --refresh || exit
   7 case "$(git diff-index --name-status HEAD)" in
   8 '')     ;;
   9 *)      echo 2>&1 "Local modifications exist."
  10         exit 1;;
  11 esac
  12
  13 case "$1" in
  14 --continue)
  15         shift
  16         ;;
  17 *)
  18         git checkout pu &&
  19         git reset --hard master || exit
  20 esac
  21 ORIG_HEAD=`git rev-parse ORIG_HEAD` || exit
  22 LF='
  23 '
  24
  25 case "$#" in
  26 0)
  27         # interactive ;-)
  28         shift
  29         HH=`cd .git/refs/heads && find -type f |
  30         sed -e 's/^\.\///' \
  31             -e '/^naster$/d' -e '/^master$/d' -e '/^maint$/d' -e '/^pu$/d'`
  32         while test "$HH"
  33         do
  34                 I=0
  35                 echo "0: done"
  36                 NHH=
  37                 for H in $HH
  38                 do
  39                         HSHA1=`git rev-parse --verify $H` || continue
  40                         MB=`git show-branch --merge-base pu $HSHA1`
  41                         case "$LF$MB$LF" in
  42                         *"$LF$HSHA1$LF"*) continue ;; # already merged.
  43                         esac
  44                         I=$(($I+1))
  45                         echo -n "$I: "
  46                         git show-branch $H
  47                         NHH="${NHH}$H "
  48                 done
  49                 case "$I" in
  50                 0)
  51                         break ;;
  52                 esac
  53                 HH=$NHH
  54                 echo -n "Merge which ones (0 to finish)? "
  55                 read ans
  56                 case "$ans" in
  57                 '' | 0)
  58                         break ;;
  59                 esac
  60                 I=0
  61                 UNUSE= USE= USED=
  62                 for H in $HH
  63                 do
  64                         I=$(($I+1))
  65                         case " $ans " in
  66                         *' '$I' '*)
  67                                 USE="$USE$H "
  68                                 USED="$USED,$H"
  69                                 ;;
  70                         *)
  71                                 UNUSE="$UNUSE$H "
  72                                 ;;
  73                         esac
  74                 done
  75                 USED=`expr "$USED" : ',\(.*\)'`
  76                 git pull -n . $USE || exit
  77                 # git merge -n "Merge $USED" pu $USE || exit
  78                 HH=$UNUSE
  79         done
  80         exit
  81         ;;
  82 esac
  83
  84 for H
  85 do
  86 #       (IFS=",$IFS"; git merge -n "Merge $H" pu $H) || exit
  87         (IFS=",$IFS"; git pull -n . $H) || exit
  88 done
  89
  90 (IFS=",$IFS"; git show-branch master $* pu `git rev-parse --short $ORIG_HEAD`)