Pre-commit hook to check for NSLog statements in Objective-C repos

pre-commit

#!/bin/sh
# name this .git/hooks/pre-commit
# chmod +x .git/hooks/pre-commit
# enjoy

IFS=$'\n'

if git-rev-parse --verify HEAD >/dev/null 2>&1; then
   against=HEAD
else
   # so it will work on empty repos
   against=emptyreposhavenocommits
fi

EC=0

for FILEPATH in $(git diff-index --name-status $against -- | cut -c3-); do
    FILE=$(basename "$FILEPATH")
    if [[ "${FILE:0:1}" == "_" ]]; then
        continue
    fi
    if [[ ! -f "$FILEPATH" ]]; then
        continue
    fi
    if [[ "${FILEPATH:0:4}" == "Pods" ]]; then
        continue
    fi
    if grep -q 'NSLog' "$FILEPATH"; then
        echo "\033[1;31mERROR: $FILEPATH has an NSLog on following line(s):\033[m"
        grep -n NSLog "$FILEPATH"
        let EC="$EC+1"
    fi
done

if [ $EC -gt 0 ]; then
    echo "\033[1mTip: Use git commit --no-verify to ignore this\033[0m"
fi

exit $EC