TOTAL_ERRORS=0

if [[ ! $TRAVIS_BRANCH ]]; then

# install cpplint on local machine.

if [[ ! $(which cpplint) ]]; then

pip install cpplint

fi

# diff files on local machine.

files=$(git diff --cached --name-status | awk '$1 != "D" {print $2}')

# diff files between PR and latest commit on Travis CI.

branch_ref=$(git rev-parse "$TRAVIS_BRANCH")

head_ref=$(git rev-parse HEAD)

files=$(git diff --name-status $branch_ref $head_ref | awk '$1 != "D" {print $2}')

for file in $files; do

if [[ $file =~ ^(patches/grpc/.*) ]]; then

continue;

else

cpplint --filter=-readability/fn_size $file;

TOTAL_ERRORS=$(expr $TOTAL_ERRORS + $?);

fi

exit $TOTAL_ERRORS