#!/bin/bash

if [ "%$1%" == "%%" ]
then
  echo "Usage: $0 <target dir> <state tag to look for>"
  exit 1
fi

if [ "%$2%" == "%%" ]
then
  echo "Usage: $0 <target dir> <state tag to look for>"
  exit 1
fi

pwd=`pwd`

# Make sure we have the latest cset
getlatestcset
echo ""

echo "---------------------" >> rejected

for patchfilename in `find /home/httpd/html/linux/$1/ -type f -name "*-state" -exec grep --with-filename "$2" {} \; | sed -e 's/:.*//' -e 's/-state//'`
do
  echo "Patch file: $patchfilename"
  patch=`echo $patchfilename | sed 's/^.*\///'`
  echo "Patch: $patch"

  if [ `echo $patch | egrep -- "-f[0-9][0-9][0-9]$" | wc -l | tr -d " "` -gt 0 ]
  then
    oldforwardcount=`echo $patch | sed -e 's/.*-f//' -e 's/^0*//'`
    fpatchbasename=`echo $patch | sed 's/-f[0-9][0-9][0-9]$//'`
    echo "Old forward count: $oldforwardcount"
    forwardcount=$(( $oldforwardcount + 1 ))
  else
    fpatchbasename=$patch
    forwardcount=1
  fi

  echo "Forward patch base name: $fpatchbasename"
  echo "Forward patch counter: $forwardcount"
  fpatch="$fpatchbasename-f"`printf %03d $forwardcount`
  echo "Forward patch name: $fpatch"

  # Boring setup over, fork the codebase
  forklatestcset $fpatch

  # Go there
  cd `cat latest`-$fpatch
  patch -p 1 < $patchfilename > /tmp/patchout
  cd $pwd

  breakcount=0;
  breakcount=$(( $breakcount + `cat /tmp/patchout | grep FAILED | wc -l | tr -d " "` ))
  breakcount=$(( $breakcount + `cat /tmp/patchout | grep "Skipping patch" | wc -l | tr -d " "` ))

  if [ $breakcount -gt 0 ]
  then
    echo "$patchfilename: "`cat latest`-$fpatch >> rejected
    echo "Old patch didn't apply"
  else
    makepatch `cat latest` `cat latest`-$fpatch `cat latest | sed 's/linux-//'` $fpatch $1
    echo "Obsolete" > $patchfilename-state
    echo "From: Michael Still <mikal@stillhq.com>" >> $patchfilename-comments
    echo "Automatically forward ported to "`cat latest`"-$fpatch" >> $patchfilename-comments

    echo -n "Delete the patch working folder? (y/n): "
    read del
    if [ "%$del%" == "%y%" ]
    then
      rm -rf `cat latest`-$fpatch
    fi
  fi
 
  echo ""
done