guilt-pop

   1 #!/bin/sh
   2 #
   3 # Copyright (c) Josef "Jeff" Sipek, 2006, 2007
   4 #
   5
   6 USAGE="[-f] [-a | --all | <patchname>]"
   7 . `dirname $0`/guilt
   8
   9 while [ $# -gt 0 ]; do
  10         case "$1" in
  11                 -f)
  12                         force=t
  13                         ;;
  14                 -a|--all)
  15                         all=t
  16                         ;;
  17                 *)
  18                         break
  19                         ;;
  20         esac
  21         shift
  22 done
  23
  24 # "guilt-pop" or "guilt-pop foo"
  25 if [ -z "$all" ] && [ $# -gt 1 ]; then
  26         usage
  27 fi
  28
  29 # "guilt-pop -a"
  30 if [ ! -z "$all" ] && [ $# -gt 0 ]; then
  31         usage
  32 fi
  33
  34 patch="$1"
  35 [ ! -z "$all" ] && patch="-a"
  36
  37 if [ ! -s "$applied" ]; then
  38         echo "No patches applied."
  39         exit 0
  40 elif [ "$patch" = "-a" ]; then
  41         # we are supposed to pop all patches
  42
  43         sidx=`wc -l < $applied`
  44         eidx=0
  45 elif [ -z "$patch" ]; then
  46         # we are supposed to pop only the current patch on the stack
  47
  48         sidx=`wc -l < $applied`
  49         eidx=`expr $sidx - 1`
  50 else
  51         # we're supposed to pop only up to a patch, make sure the patch is
  52         # in the series
  53
  54         eidx=`cat $applied | grep -ne "^[0-9a-f]\{40\}:$patch\$" | cut -d: -f 1`
  55         if [ -z "$eidx" ]; then
  56                 die "Patch $patch is not in the series/is not applied"
  57         fi
  58
  59         eidx=`expr $eidx - 1`
  60         sidx=`wc -l < $applied`
  61 fi
  62
  63 # make sure that there are no unapplied changes
  64 # if we are forcing the pop, reset first
  65 if [ ! -z "$force" ]; then
  66         cd "$TOP_DIR" >&2 >/dev/null
  67         git-reset --hard
  68         cd - >&2 >/dev/null
  69 elif ! must_commit_first; then
  70         die "Uncommited changes detected. Refresh first."
  71 fi
  72
  73 l=`awk "BEGIN{n=0}(n==$eidx){print \\$0; exit}{n=n+1}END{}" < $applied`
  74
  75 pop_many_patches `echo $l | cut -d: -f1`^ `expr $sidx - $eidx`
  76
  77 p=`get_top`
  78 [ ! -z "$p" ] && echo "Now at $p." || echo "All patches popped."
  79