Rémi Verschelde 2017-02-12 00:51:14 +01:00
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# Git hooks for Godot Engine
This folder contains git hooks meant to be installed locally by Godot Engine
contributors to make sure they comply with our requirements.
## List of hooks
- Pre-commit hook for clang-format: Applies clang-format to the staged files
before accepting a commit; blocks the commit and generates a patch if the
style is not respected.
Should work on Linux and macOS. You may need to edit the file if your
clang-format binary is not in the $PATH, or if you want to enable colored
output with pygmentize.
## Installation
Copy all the files from this folder into your .git/hooks folder, and make sure
the hooks and helper scripts are executable.

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#!/bin/sh
# Provide the canonicalize filename (physical filename with out any symlinks)
# like the GNU version readlink with the -f option regardless of the version of
# readlink (GNU or BSD).
# This file is part of a set of unofficial pre-commit hooks available
# at github.
# Link: https://github.com/githubbrowser/Pre-commit-hooks
# Contact: David Martin, david.martin.mailbox@googlemail.com
###########################################################
# There should be no need to change anything below this line.
# Canonicalize by recursively following every symlink in every component of the
# specified filename. This should reproduce the results of the GNU version of
# readlink with the -f option.
#
# Reference: http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
canonicalize_filename () {
local target_file="$1"
local physical_directory=""
local result=""
# Need to restore the working directory after work.
local working_dir="`pwd`"
cd -- "$(dirname -- "$target_file")"
target_file="$(basename -- "$target_file")"
# Iterate down a (possible) chain of symlinks
while [ -L "$target_file" ]
do
target_file="$(readlink -- "$target_file")"
cd -- "$(dirname -- "$target_file")"
target_file="$(basename -- "$target_file")"
done
# Compute the canonicalized name by finding the physical path
# for the directory we're in and appending the target file.
physical_directory="`pwd -P`"
result="$physical_directory/$target_file"
# restore the working directory after work.
cd -- "$working_dir"
echo "$result"
}

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#!/bin/sh
# Git pre-commit hook that runs multiple hooks specified in $HOOKS.
# Make sure this script is executable. Bypass hooks with git commit --no-verify.
# This file is part of a set of unofficial pre-commit hooks available
# at github.
# Link: https://github.com/githubbrowser/Pre-commit-hooks
# Contact: David Martin, david.martin.mailbox@googlemail.com
###########################################################
# CONFIGURATION:
# pre-commit hooks to be executed. They should be in the same .git/hooks/ folder
# as this script. Hooks should return 0 if successful and nonzero to cancel the
# commit. They are executed in the order in which they are listed.
#HOOKS="pre-commit-compile pre-commit-uncrustify"
HOOKS="pre-commit-clang-format"
###########################################################
# There should be no need to change anything below this line.
. "$(dirname -- "$0")/canonicalize_filename.sh"
# exit on error
set -e
# Absolute path to this script, e.g. /home/user/bin/foo.sh
SCRIPT="$(canonicalize_filename "$0")"
# Absolute path this script is in, thus /home/user/bin
SCRIPTPATH="$(dirname -- "$SCRIPT")"
for hook in $HOOKS
do
echo "Running hook: $hook"
# run hook if it exists
# if it returns with nonzero exit with 1 and thus abort the commit
if [ -f "$SCRIPTPATH/$hook" ]; then
"$SCRIPTPATH/$hook"
if [ $? != 0 ]; then
exit 1
fi
else
echo "Error: file $hook not found."
echo "Aborting commit. Make sure the hook is in $SCRIPTPATH and executable."
echo "You can disable it by removing it from the list in $SCRIPT."
echo "You can skip all pre-commit hooks with --no-verify (not recommended)."
exit 1
fi
done

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#!/bin/bash
# git pre-commit hook that runs an clang-format stylecheck.
# Features:
# - abort commit when commit does not comply with the style guidelines
# - create a patch of the proposed style changes
# Modifications for clang-format by rene.milk@wwu.de
# This file is part of a set of unofficial pre-commit hooks available
# at github.
# Link: https://github.com/githubbrowser/Pre-commit-hooks
# Contact: David Martin, david.martin.mailbox@googlemail.com
# Some quality of life modifications made for Godot Engine.
##################################################################
# SETTINGS
# Set path to clang-format binary
# CLANG_FORMAT="/usr/bin/clang-format"
CLANG_FORMAT=`which clang-format`
# Remove any older patches from previous commits. Set to true or false.
# DELETE_OLD_PATCHES=false
DELETE_OLD_PATCHES=false
# Only parse files with the extensions in FILE_EXTS. Set to true or false.
# If false every changed file in the commit will be parsed with clang-format.
# If true only files matching one of the extensions are parsed with clang-format.
# PARSE_EXTS=true
PARSE_EXTS=true
# File types to parse. Only effective when PARSE_EXTS is true.
# FILE_EXTS=".c .h .cpp .hpp"
FILE_EXTS=".c .h .cpp .hpp .cc .hh .cxx .m"
# Use pygmentize instead of cat to parse diff with highlighting.
# Install it with `pip install pygments` (Linux) or `easy_install Pygments` (Mac)
# READER="pygmentize -l diff"
READER=cat
##################################################################
# There should be no need to change anything below this line.
. "$(dirname -- "$0")/canonicalize_filename.sh"
# exit on error
set -e
# check whether the given file matches any of the set extensions
matches_extension() {
local filename=$(basename "$1")
local extension=".${filename##*.}"
local ext
for ext in $FILE_EXTS; do [[ "$ext" == "$extension" ]] && return 0; done
return 1
}
# necessary check for initial commit
if git rev-parse --verify HEAD >/dev/null 2>&1 ; then
against=HEAD
else
# Initial commit: diff against an empty tree object
against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi
if [ ! -x "$CLANG_FORMAT" ] ; then
printf "Error: clang-format executable not found.\n"
printf "Set the correct path in $(canonicalize_filename "$0").\n"
exit 1
fi
# create a random filename to store our generated patch
prefix="pre-commit-clang-format"
suffix="$(date +%s)"
patch="/tmp/$prefix-$suffix.patch"
# clean up any older clang-format patches
$DELETE_OLD_PATCHES && rm -f /tmp/$prefix*.patch
# create one patch containing all changes to the files
git diff-index --cached --diff-filter=ACMR --name-only $against -- | while read file;
do
# ignore file if we do check for file extensions and the file
# does not match any of the extensions specified in $FILE_EXTS
if $PARSE_EXTS && ! matches_extension "$file"; then
continue;
fi
# clang-format our sourcefile, create a patch with diff and append it to our $patch
# The sed call is necessary to transform the patch from
# --- $file timestamp
# +++ - timestamp
# to both lines working on the same file and having a a/ and b/ prefix.
# Else it can not be applied with 'git apply'.
"$CLANG_FORMAT" -style=file "$file" | \
diff -u "$file" - | \
sed -e "1s|--- |--- a/|" -e "2s|+++ -|+++ b/$file|" >> "$patch"
done
# if no patch has been generated all is ok, clean up the file stub and exit
if [ ! -s "$patch" ] ; then
printf "Files in this commit comply with the clang-format rules.\n"
rm -f "$patch"
exit 0
fi
# a patch has been created, notify the user and exit
printf "\nThe following differences were found between the code to commit "
printf "and the clang-format rules:\n\n"
$READER "$patch"
printf "\n"
# Allows us to read user input below, assigns stdin to keyboard
exec < /dev/tty
while true; do
read -p "Do you want to apply that patch (Y - Apply, N - Do not apply, S - Apply and stage files)? [Y/N/S] " yn
case $yn in
[Yy] ) git apply $patch;
printf "The patch was applied. You can now stage the changes and commit again.\n\n";
break
;;
[Nn] ) printf "\nYou can apply these changes with:\n git apply $patch\n";
printf "(may need to be called from the root directory of your repository)\n";
printf "Aborting commit. Apply changes and commit again or skip checking with";
printf " --no-verify (not recommended).\n\n";
break
;;
[Ss] ) git apply $patch;
git diff-index --cached --diff-filter=ACMR --name-only $against -- | while read file;
do git add $file;
done
printf "The patch was applied and the changed files staged. You can now commit.\n\n";
break
;;
* ) echo "Please answer yes or no."
;;
esac
done
exit 1 # we don't commit in any case