make_patchnum.sh

   1 #!/bin/sh
   2
   3 Existing=`cat .patchnum 2>/dev/null`
   4 Existing_Sha1=`cat .sha1 2>/dev/null`
   5 if [ -e ".patch" ]; then
   6         Current=`awk '{print $4}' .patch`
   7         Sha1=`awk '{print $3}' .patch`
   8 elif [ -d ".git" ]; then
   9         # we should do something better here
  10         Current=`git describe`
  11         Sha1=`git rev-parse HEAD`
  12         Changed=`git diff-index --name-only HEAD`
  13         [ -n "$Changed" ] && Current="$Current-with-uncommitted-changes"
  14 fi
  15
  16 if [ "$Existing" != "$Current" -o "$Existing_Sha1" != "$Sha1" ]; then
  17         echo "Updating .patchnum and .sha1"
  18         echo -n $Current > .patchnum
  19         echo -n $Sha1 > .sha1
  20 else
  21         echo "Reusing .patchnum and .sha1"
  22 fi