git-whitespace

#!/bin/bash
#
# Copyright (c) 2013 Daniel Gryniewicz
#
# Remove whitespace errors from uncommitted code.  Basically, this means:
# git diff > tmp.patch
# git checkout .
# git apply --whitespace=fix tmp.patch

# Set usage output
DESCRIPTION="Remove whitespace errors from uncommitted code"
USAGE="[-h |--help] [-f | --force]"
LONGUSAGE="\t-h, --help\n\t\tPrint this help message
\t-f, --force\n\t\tFix whitespace even if there is staged changes"

# Standard functions
source ${SCRIPTS}/functions.sh

# Script name
ME=$(basename $0)

# Parse arguments
ARGS=`getopt -o hf --long help,force -n "${ME}" -- "$@"`

if [ $? != 0 ] ; then
	usage 
fi
eval set -- "$ARGS"

while true ; do
	case "$1" in
		-h|--help) usage; shift ;;
		-f|--force) FORCE="yes"; shift ;;
		--) shift ; break ;;
		* ) usage "Invalid argument $1";;
	esac
done

# Remaining arguments are in $1, $2, etc. as normal

SUBDIRECTORY_OK=Yes
OPTIONS_SPEC=
LONG_USAGE="${LONGUSAGE}"
# Source the git environment
GIT_PATH=
source "$(git --exec-path )/git-sh-setup"

if [ -z "${FORCE}" ]; then
	git status | grep "git reset HEAD" > /dev/null && die "Current branch has staged changes"
fi

TMPFILE=$(mktemp)
git diff > "${TMPFILE}" || die "Failed to diff"
git checkout . || die "Failed to checkout"
git apply --whitespace=fix "${TMPFILE}" || die "Failed to apply"
rm -f ${TMPFILE}