#!/bin/sh

# Define test candidates:
# both must start with "/home/" and end on "df" (see sed command below)
DF_OLD=/home/berny/git/coreutils-8.19/inst/bin/df
DF_NEW=/home/berny/coreutils/src/df

TEST_SH=/tmp/dftest.tmp.sh
OUT_OLD=/tmp/dftest.out.old
OUT_NEW=/tmp/dftest.out.new

function dfprep
{
  printf "#!/bin/sh  \n"
  printf "DF=\"\$1\" \n"
  
  for o in '' -i -h -hi -P -hP -Ph -iP -Pi -hiP -a -l '-t ext3' '-t typo' '-x ext3' '-x typo'
  do
    for s in '' -k -m -Bk -BkB  -BkiB -B1k -B1kB -B1kiB -Bsi -Bhuman-readable
    do
      for t in '' '--total'
      do
        for p in '' '.'
        do
          printf "                 \"\$DF\" $o $s $t $p || echo \$? \n"
          printf "BLOCKSIZE=1M     \"\$DF\" $o $s $t $p || echo \$? \n"
          printf "BLOCK_SIZE=1M    \"\$DF\" $o $s $t $p || echo \$? \n"
          printf "DF_BLOCK_SIZE=1M \"\$DF\" $o $s $t $p || echo \$? \n"
        done
      done
    done
  done
}
  
dfprep > $TEST_SH
sync
sh -x $TEST_SH $DF_OLD > $OUT_OLD 2>&1
sh -x $TEST_SH $DF_NEW > $OUT_NEW 2>&1
for f in $OUT_OLD $OUT_NEW
do
  sed -i \
    -e '1n; s/\/home\/.*\/df/df/' \
    -e 's/^\(total.*%\)$/\1 -/' \
    $f
  for x in 3 2 1 ; do
    sed -i \
      -e "s/ \([0-9]\{12\}\)\([^0-9]\)/ abcdefghijkl\2/;
          s/ \([0-9]\{11\}\)\([^0-9]\)/ abcdefghijk\2/; \
          s/ \([0-9]\{10\}\)\([^0-9]\)/ abcdefghij\2/; \
          s/ \([0-9]\{9\}\)\([^0-9]\)/ abcdefghi\2/; \
          s/ \([0-9]\{8\}\)\([^0-9]\)/ abcdefgh\2/; \
          s/ \([0-9]\{7\}\)\([^0-9]\)/ abcdefg\2/; \
          s/ \([0-9]\{6\}\)\([^0-9]\)/ abcdef\2/; \
          s/ \([0-9]\{5\}\)\([^0-9]\)/ abcde\2/; \
          s/ \([0-9]\{4\}\)\([^0-9]\)/ abcd\2/; \
          s/ \([0-9]\{3\}\)\([^0-9]\)/ abc\2/; \
          s/ \([0-9]\{2\}\)\([^0-9]\)/ ab\2/; \
          s/ \([0-9]\{1\}\)\([^0-9]\)/ a\2/
          " \
      $f
  done
done
meld $OUT_OLD $OUT_NEW &