guilt-pop

   1 #!/bin/bash
   2 #
   3 # Copyright (c) Josef "Jeff" Sipek, 2006, 2007
   4 #
   5
   6 source "`dirname $0`/guilt"
   7
   8 USAGE="$USAGE [-a | --all | <patchname>]"
   9
  10 if [ $# -gt 1 ]; then
  11         print_usage
  12         exit 1
  13 fi
  14
  15 patch="$1"
  16
  17 if [ "$patch" = "--all" -o "$patch" = "-a" ]; then
  18         # we are supposed to pop all patches
  19
  20         sidx=`wc -l < $applied`
  21         eidx=0
  22 elif [ -z "$patch" ]; then
  23         # we are supposed to pop only the current patch on the stack
  24
  25         sidx=`wc -l < $applied`
  26         eidx=`expr $sidx - 1`
  27 else
  28         # we're supposed to pop only up to a patch, make sure the patch is
  29         # in the series
  30
  31         eidx=`cat $applied | grep -ne "^[0-9a-f]\{40\}:$patch\$" | cut -d: -f 1`
  32         if [ -z "$eidx" ]; then
  33                 echo "Patch $patch is not in the series/is not applied" >&2
  34                 exit 1
  35         fi
  36
  37         eidx=`expr $eidx - 1`
  38         sidx=`wc -l < $applied`
  39 fi
  40
  41 # make sure that there are no unapplied changes
  42 if ! must_commit_first; then
  43         echo "Uncommited changes detected. Refresh first." >&2
  44         exit 1
  45 fi
  46
  47 l=`awk "BEGIN{n=0}(n==$eidx){print \\$0; exit}{n=n+1}END{}" < $applied`
  48
  49 pop_many_patches `echo $l | cut -d: -f1`^ `expr $sidx - $eidx`
  50
  51 p=`get_top`
  52 [ ! -z "$p" ] && echo "Now at $p." || echo "All patches popped."
  53