Cargo CI git hook, place in <repo>/.git/hooks/ as `pre-commit`.

pre-commit

#!/bin/bash
# From https://deaddabe.fr/blog/2021/09/29/git-pre-commit-hook-for-rust-projects/
set -eu

TODO="$(git rev-parse --show-toplevel)/TODO"
if [ -s $TODO ]
then
    if [ -z $(cat $TODO | grep "TODO_RECHECK") ]
    then 
	echo "TODO_RECHECK" >> $TODO
	exit 1
    else 
	rm $TODO
    fi
fi

fmt=$(cargo fmt --all -- --check)
result=$?
if [[ ${result} -ne 0 ]]; then
    echo "There are some code style issues."
    echo "Run 'cargo fmt -- --all.'" >> $TODO
    exit 1
else
    echo "Code style is good."
fi

clippy_stderr=$(cargo clippy --all-targets -- -Dwarnings)
result=$?
if [[ ${result} -ne 0 ]]; then
    echo "There are some clippy issues."
    echo "Run 'cargo clippy --all-targets --'" >> $TODO
    exit 1
else
    echo "Clippy is good."
fi

gentest=$(cargo test --all)
result=$?
if [[ ${result} -ne 0 ]]; then
    echo "There are some test issues."
    echo "Run 'cargo test'" >> $TODO
    exit 1
else 
    echo "Tests are good."
fi

vmtest=$(cargo test -p vm6502)
result=$?
if [[ ${result} -ne 0 ]]; then
    echo "There are some issues with the vm6502 tests."
    echo "Run 'cargo test -p vm6502'" >> $TODO
    exit 1
else 
    echo "vm6502 tests are good."
fi

diffcheck=$(git diff --cached --shortstat)
if [ -n "$diffcheck" ]
then
    exit 0
else
    echo "Nothing staged, did you forget 'git add'?"
    exit 1
fi

function usercontinue() {
    #This hooks prevents unintentional committing to a branch.
    #Customize PATTERN to suit your needs.

    PATTERN="master"
    BRANCH=`git rev-parse --abbrev-ref HEAD`

    if [[ $BRANCH = *$PATTERN* ]]; then
    echo "----------------------------------------------------------------"
    echo "WARNING: You are committing to the master branch:" $BRANCH
    echo "----------------------------------------------------------------"
    else
        exit 0
    fi

    while true; do
        read -p "Do you really want to commit? y/n " yn < /dev/tty
        case $yn in
            [Yy]* ) exit 0; break;;
            [Nn]* ) exit 1;;
            * ) echo "Please answer y or n.";;
        esac
    done

    exit 1
}
usercontinue