How to calculate the number of inserted, deleted and modified lines in Subversion

svn_stats.sh

#!/bin/bash

FIRST_REV=${1}
LAST_REV=${2}
REPO_ROOT=${3}

if [ -z "${FIRST_REV}" ] || [ -z "${LAST_REV}" ] || [ -z "${REPO_ROOT}" ]
then
  echo "usage: ${0} first_revision last_revision repository_root"
  exit 1
fi

STAT=$(svn diff -r${FIRST_REV}:${LAST_REV} ${REPO_ROOT} 2> /dev/null | diffstat -m -t)

INS=0
DEL=0
MOD=0

for f in ${STAT}
do
  ins=$(echo ${f} | awk -F',' '{print $1}')
  del=$(echo ${f} | awk -F',' '{print $2}')
  mod=$(echo ${f} | awk -F',' '{print $3}')

  INS=$((${INS}+${ins}))
  DEL=$((${DEL}+${del}))
  MOD=$((${MOD}+${mod}))
done

echo "INSERTED=${INS}"
echo "DELETE=${DEL}"
echo "MODIFIED=${MOD}"