git hook shellcheck

pre-commit.sh

#!/bin/sh

STAGED_FILES=$(git diff --cached --name-only --diff-filter=ACM | grep ".sh\{0,1\}$")
SHCHCK="shellcheck"

if [[ "$STAGED_FILES" = "" ]]; then
  exit 0
fi

PASS=true

printf "\nValidating shell scripts:\n"

for FILE in $STAGED_FILES
do
  "$SHCHCK" "$FILE"

  if [[ "$?" == 0 ]]; then
    printf "\t\033[32mShellcheck Passed: $FILE\033[0m"
  else
    printf "\t\033[41mShellcheck Failed: $FILE\033[0m"
    PASS=false
  fi
done

printf "\nShellcheck validation completed!\n"

if ! $PASS; then
  printf "\033[41mCOMMIT FAILED:\033[0m Your commit contains files that should pass Shellcheck but do not. Please fix the Shellcheck errors and try again.\n"
  exit 1
else
  printf "\033[42mCOMMIT SUCCEEDED\033[0m\n"
fi

exit $?

heavily based on ESLINT pre-commit hook by Rashtay https://gist.github.com/rashtay/328da46a99a9d7c746636df1cf769675