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openrw/scripts/verify-commit

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#!/bin/bash
# verify-commit:
# Ensures that a diff doesn't introduce code that clang-format would change
# Can be executed as a pre-commit hook by symlinking this script:
# $ ln -s .git/hooks/pre-commit scripts/verify-commit
# Or used to verify changes between two commits
# $ verify-commit HEAD~2 HEAD
# Determine if we need to check A-B or just cached changes
if [ "$#" == 2 ]; then
DIFF_ARGS="$1 $2"
CAN_ACCEPT=false
elif [ "$#" == 0 ]; then
DIFF_ARGS="--cached"
CAN_ACCEPT=true
else
echo "Unrecognised arguments"
exit 1
fi
CLANG_DIFF=$(git diff ${DIFF_ARGS} -U0 | clang-format-diff -p1)
WARNED=""
# Check the diff and warn if there is anything that doesn't match the style
if [ -n "$CLANG_DIFF" ]; then
echo "Source does not match expected clang-format"
echo "$CLANG_DIFF"
WARNED="1"
fi
# Allow the user to override when running as a hook
if [ -n "$WARNED" ]; then
echo "Warnings detected"
if [ "$CAN_ACCEPT" = true ]; then
read -p "Are you sure you want to commit? [Y/n] " -n 1 -r
echo # (optional) move to a new line
if [[ ! $REPLY =~ ^[Yy]+$ ]]; then
exit 1
fi
else
exit 1
fi
fi