diffTables

#!/bin/bash

SELF=$(basename $0)
if [ $# -ne 1 ]
then
    echo "Not enough args"
    echo "    $SELF output_directory"
    exit 1
fi

DIFF=$1
FIRST=before
SECOND=after

#DIR=$(date '+%Y-%m-%d_%H-%M-%S')

for DIR in $FIRST $SECOND
do
  if ! [ -d $DIR ]
  then
      echo Cannot find $DIR
      exit 2
  fi
done


for FILE in $(ls -1 $FIRST)
do
    if [ -e $SECOND/$FILE ]
    then
        if ! diff $FIRST/$FILE $SECOND/$FILE > /dev/null 2>&1
        then
            [ -d $DIFF/$FIRST ] || mkdir -p $DIFF/$FIRST 
            [ -d $DIFF/$SECOND ] || mkdir -p $DIFF/$SECOND 
            cp $FIRST/$FILE $DIFF/$FIRST
            cp $SECOND/$FILE $DIFF/$SECOND
        fi
    else
        [ -d $DIFF/$FIRST ] || mkdir -p $DIFF/$FIRST
        cp $FIRST/$FILE $DIFF/$FIRST
    fi
done

for FILE in $(ls -1 $SECOND)
do
    if ! [ -e $FIRST/$FILE ]
    then
        [ -d $DIFF/$SECOND ] || mkdir -p $DIFF/$SECOND 
        cp $SECOND/$FILE $DIFF/$SECOND
    fi
done
tar zcvf $DIFF/${FIRST}.tgz $FIRST
tar zcvf $DIFF/${SECOND}.tgz $SECOND

rm -r $FIRST
mv $SECOND $FIRST

tree $DIFF