godot/misc/travis/black-format.sh
Rémi Verschelde efdeba3326 Travis: Add static check for Python black formatting
Also install and use pygmentize to visualize clang-format and black
diffs.

(cherry picked from commit 3644036fd3)
2020-06-10 15:30:52 +02:00

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#!/bin/sh
BLACK=black
BLACK_OPTIONS="-l 120"
if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then
# Travis only clones the PR branch and uses its HEAD commit as detached HEAD,
# so it's problematic when we want an exact commit range for format checks.
# We fetch upstream to ensure that we have the proper references to resolve.
# Ideally we would use $TRAVIS_COMMIT_RANGE but it doesn't play well with PR
# updates, as it only includes changes since the previous state of the PR.
if [ -z "$(git remote | grep upstream)" ]; then
git remote add upstream https://github.com/godotengine/godot \
--no-tags -f -t $TRAVIS_BRANCH
fi
RANGE="upstream/$TRAVIS_BRANCH HEAD"
else
# Test only the last commit, since $TRAVIS_COMMIT_RANGE wouldn't support
# force pushes.
RANGE=HEAD
fi
FILES=$(git diff-tree --no-commit-id --name-only -r $RANGE | grep -v thirdparty/| grep -E "(SConstruct|SCsub|\.py)$")
echo "Checking files:\n$FILES"
# create a random filename to store our generated patch
prefix="static-check-black"
suffix="$(date +%s)"
patch="/tmp/$prefix-$suffix.patch"
for file in $FILES; do
"$BLACK" "$BLACK_OPTIONS" --diff "$file" | \
sed -e "1s|--- |--- a/|" -e "2s|+++ |+++ b/|" >> "$patch"
done
# if no patch has been generated all is ok, clean up the file stub and exit
if [ ! -s "$patch" ] ; then
printf "Files in this commit comply with the black formatting rules.\n"
rm -f "$patch"
exit 0
fi
# a patch has been created, notify the user and exit
printf "\n*** The following differences were found between the code to commit "
printf "and the black formatting rules:\n\n"
pygmentize -l diff "$patch"
printf "\n*** Aborting, please fix your commit(s) with 'git commit --amend' or 'git rebase -i <hash>'\n"
exit 1