Pre-commit hook to check for extra-large files that you probably shouldn't have in version control

pre-commit.sh

#!/usr/bin/env bash

echo '================================================================================'
echo 'PRE-COMMIT: CHECKING FILE SIZES'
echo '================================================================================'

# constant that you want to check sizes against
SIZE_LIMIT=$(( 1048576 * 64 ))

# $1 - filetype
function invalid_filetype() {
  local filetype="$1"
  local filename="$2"

  echo -e "[NO!]"
  echo -e "\t.$filetype files are not allowed."
  echo -e "\tplease git reset HEAD $filename and try again"
  exit 69;

}


invalid_filetypes="pyc|zip|jpg|png"

for file in $(git status --porcelain -uno); do

  if [ ${#file} -gt 1 -a -f "$file" ]; then
    __filename=$(basename $file)
    __extension="${__filename##*.}"

    echo -en "- checking $file "
    if [[ $__extension =~ $invalid_filetypes ]]; then
      invalid_filetype "$__extension" "$file"
    fi

    __ln=( $( ls -Lon "$file" ) )
    __size=${__ln[3]}


    if [ $__size -lt $SIZE_LIMIT ]; then
      echo -e " [OK!]"
    else
      echo -e " [NO!]"
      echo -e "$file is larger than 64mb. please don't add to repo"
      exit 2;
    fi

  fi
done


echo "================================================================================"