pre-commit

#!/bin/sh

# Astyle pre-commit hook - Version 2.0 (By Ramon Fried and Yossi Segev)
# This file should be placed under .git/hooks and should have executables permissions
# Things to change (if you want):
# 1. The Astyle settings (it no longer takes it from the default)
# 2. The files the scripts operates upon (currently only C/C++ source / header files)

DATE=$(date +%d-%m-%Y--%H:%M)
BACKUPDIR="formatbackup-$DATE"

ASTYLE_SETTINGS_LINUX_USER_SPACE="--suffix=none \
                                    --style=allman \
                                    --indent=spaces=4 \
                                    --indent-classes \
                                    --indent-switches \
                                    --indent-cases \
                                    --indent-namespaces \
                                    --pad-oper \
                                    --pad-paren \
                                    --pad-header \
                                    --break-elseifs \
                                    --add-brackets \
                                    --align-pointer=name \
                                    --align-reference=name \
                                    --lineend=linux"

ASTYLE_SETTINGS_LINUX_KERNEL_SPACE="--style=1tbs \
                                    --indent=tab \
                                    --align-pointer=name \
                                    --add-brackets \
                                    --max-code-length=80"

# Alter this line to change configuration
ASTYLE_PARAMETERS=${ASTYLE_SETTINGS_LINUX_USER_SPACE}

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 you want to allow non-ascii filenames set this variable to true.
allownonascii=$(git config hooks.allownonascii)

# Cross platform projects tend to avoid non-ascii filenames; prevent
# them from being added to the repository. We exploit the fact that the
# printable range starts at the space character and ends with tilde.
if [ "$allownonascii" != "true" ] &&
	# Note that the use of brackets around a tr range is ok here, (it's
	# even required, for portability to Solaris 10's /usr/bin/tr), since
	# the square bracket bytes happen to fall in the designated range.
	test "$(git diff --cached --name-only --diff-filter=A -z $against |
	  LC_ALL=C tr -d '[ -~]\0')"
then
	echo "Error: Attempt to add a non-ascii file name."
	echo
	echo "This can cause problems if you want to work"
	echo "with people on other platforms."
	echo
	echo "To be portable it is advisable to rename the file ..."
	echo
	echo "If you know what you are doing you can disable this"
	echo "check using:"
	echo
	echo "  git config hooks.allownonascii true"
	echo
	exit 1
fi

ASTYLE=astyle

case `$ASTYLE --version 2> /dev/null` in
  Artistic*)
      ;;
  default)
      echo "Did not find astyle, please install it before continuing."
      exit 1
      ;;
esac

mkdir -p ${BACKUPDIR}
files=$(git-diff-index --diff-filter=ACMR --name-only -r --cached $against -- | grep -i '\.c$\|\.cpp$\|\.hpp$\|\.h$')
for file in $files; do
    x=`echo $file`
    if test "x$x" != "x"; then
        cp --parents $file ${BACKUPDIR}
	# Remove trailing spaces
        sed -i 's/[[:space:]]*$//' $file
	$ASTYLE ${ASTYLE_PARAMETERS} $file
        git add $file
    fi
done