pre-commit

pre-commit

#!/bin/bash

# Check whether any submodule is about to be updated with the
# commit. Ask the user for confirmation.

echo "Checking if any submodules are being updated..."

ROOT_DIR=$(git rev-parse --show-cdup)
SUBMODULES=$(grep path ${ROOT_DIR}.gitmodules | sed 's/^.*path = //')

# submodules that have been modified
MOD_SUBMODULES=$(git diff --cached --name-only | grep -F "$SUBMODULES")

# If no modified submodules, exit with status code 0, else prompt the
# user and exit accordingly
if [[ -n "$MOD_SUBMODULES" ]]; then
    echo "The following modified submodules are about to be committed:"
    echo "$MOD_SUBMODULES"
    echo -n "Continue with commit? [yN] "
    read -n 1 reply </dev/tty
    echo
    if [[ "$reply" == "y" || "$reply" == "Y" ]]; then
        exit 0
    else
        echo "Aborted commit."
        exit 1
    fi
else
    exit 0
fi