#!/bin/sh

# A simple wrapper to the kernel.org script checkpatch.pl

# Usage:
# 
#   svn diff | ./build_tools/kernel-cp -
#   ./build_tools/kernel-cp my.diff
#   ./build_tools/kernel-cp --file drivers/dahdi/wctdm.c

mydir=`dirname $0`

check_patch_dir="$mydir/cp"
rel_path="scripts/checkpatch.pl"
check_patch="$mydir/checkpatch.pl"
URL='http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob_plain;f=scripts/checkpatch.pl;hb=HEAD'

# Required files in directories in the tree
SUBDIRS="fs ipc lib arch init scripts drivers kernel Documentation include"

set -e

if [ "$1" = 'download' ]; then
	if [ -x "$check_patch" ]; then
		exit 0
	fi
	
	wget -O "$check_patch" "$URL"
	if [ `wc -c <"$check_patch"` -lt 1000 ]; then
		# already downloaded
		# FIXME: redirection fails on downloading and you get a
		# short HTML file as your "script".
		echo >&2 "$0: Error: Download failed".
		exit 1
	fi
	chmod +x "$check_patch"

	exit 0
fi

if [ ! -x "$check_patch" ]; then
	echo >&2 "Script $check_patch not found. Download it?"
	echo >&2 ""
	echo >&2 "  $0 download"
	exit 1
fi

exec $check_patch --no-tree --no-signoff "$@"