#!/bin/bash

function usage {
    echo "Usage:  $0 [--sparse][--valgrind][--debug] path/to/file.c"
    exit 1
}

SCRIPT_DIR=$(dirname $0)
if [ -e $SCRIPT_DIR/../smatch ] ; then
    CMD=$SCRIPT_DIR/../smatch
elif which smatch | grep smatch > /dev/null ; then
    CMD=smatch
else
    echo "Smatch binary not found."
    exit 1
fi

while true ; do
    if [[ "$1" == "--sparse" ]] ; then
	CMD="sparse"
	shift
    elif [[ "$1" == "--test-parsing" ]] ; then
	CMD="$SCRIPT_DIR/../test-parsing -no-lineno"
	shift
    elif echo "$1" | grep -q -- "--outfile=" ; then
	outfile=$(echo "$1" | cut -d '=' -f 2)
	if [ "outfile" != "" ] ; then
	    POST="$POST > $outfile"
	fi
	shift
    elif [[ "$1" == "--valgrind" ]] ; then
	PRE="valgrind"
	shift
    elif [[ "$1" == "--endian" ]] ; then
        ENDIAN="CF=-D__CHECK_ENDIAN__"
	shift
    elif [[ "$1" == "" ]] ; then
	break
    else
	if [[ "$1" == "--help" ]] ; then
		$CMD --help
		exit 1
	fi
	if echo $1 | grep -q ^- ; then
		POST="$1 $POST"
	else
		break
	fi
	shift
    fi
done
if echo $CMD | grep -q smatch ; then
    POST="--project=kernel --succeed $POST"
fi

cname=$1
cname=$(echo ${cname/.o/.c})
if [[ "$cname" == "" ]] ; then
    usage
fi
if ! test -e $cname ; then
    usage
fi

oname=$(echo ${cname/.c/.o})
if ! echo $oname | grep -q .o$ && ! echo $oname | grep -q /$ ; then
    usage
fi
if  echo $oname | grep -q .o$ ; then
    rm -f $oname
fi

if [[ ! -z $ARCH ]]; then
	KERNEL_ARCH="ARCH=$ARCH"
fi
if [[ ! -z $CROSS_COMPILE ]] ; then
	KERNEL_CROSS_COMPILE="CROSS_COMPILE=$CROSS_COMPILE"
fi

make $KERNEL_CROSS_COMPILE $KERNEL_ARCH C=2 $ENDIAN CHECK="$PRE $CMD $POST" $oname