pre-commit.sh

#!/bin/sh

# Git pre-commit hook
#####################
#
# - check for whitespace problems (trailing spaces, ...)
# - check for lines with 'FIXME'
# - running tests with Python 2.7, Python 3.4 and PyPy
# - running code style check (pep8) on modified files
# - designed for Windows, for Linux replace `> NUL` with `> /dev/null`

########################################################################
# Check for whitespace errors
git diff --cached --check  # Check for whitespace errors

code=$?

if [ "$code" -ne "0" ]; then
    echo
    echo "Your changes introduced whitespace errors!"
    exit $code
fi;


########################################################################
# Check for 'FIXME' lines
todo_lines=$(git diff --cached | grep ^+ | grep -v pre-commit | grep FIXME | sed 's_^+\s*__g')

if [ "$todo_lines" != "" ]; then
    echo "You probably didn't want to commit these lines:"
    echo -e "$todo_lines"
    exit 1
fi


########################################################################
# Run tests (Python 2)
echo "Running tests..."

git stash -q --keep-index
nosetests > NUL
code=$?

git stash pop -q

if [ "$code" -eq "0" ]; then
    echo
    echo
    echo "All tests passed. Continuing..."
    echo
else
    echo
    echo
    echo "Please (re)check tests!"
    exit $code
fi;


########################################################################
# Run tests (Python 3)
echo "Running tests (Python 3)..."

git stash -q --keep-index
python3 setup.py nosetests > NUL
code=$?

git stash pop -q

if [ "$code" -eq "0" ]; then
    echo
    echo
    echo "Compatibility to Python 3 is okay. Continuing..."
    echo
else
    echo
    echo
    echo "Please check Python 3 compatibility!"
    exit $code
fi;


########################################################################
# Run tests (PyPy)
echo "Running tests (PyPy)..."

git stash -q --keep-index
pypy setup.py nosetests > NUL
code=$?

git stash pop -q

if [ "$code" -eq "0" ]; then
    echo
    echo
    echo "Compatibility to PyPy is okay. Continuing..."
    echo
else
    echo
    echo
    echo "Please check Pypy compatibility!"
    exit $code
fi;


########################################################################
# Run code style check
echo "Running code style check..."

modified_files=$(git diff --cached --name-status | grep -v ^D | awk '$1 $2 { print $2}' | grep -e .py$)
if [ -n "$modified_files" ]; then
    pep8 -r $modified_files
fi

if [ "$?" -eq "0" ]; then
    echo
    echo
    echo "Code style is okay. Continuing..."
else
    echo
    echo
    echo "Please consider cleaning up your code!"
    sleep 5
fi;