#!/bin/bash

function check_tool()
{
    tool=$1
    cmd=$2
    
    a=`${cmd} 2>/dev/null`
    if [ ! $? -eq 0 ] ; then
	echo "${tool} is missing"
	exit 1
    fi
}

function check_tools()
{
    check_tool "readelf" "readelf --version"
    check_tool "objdump" "objdump --version"
    check_tool "c++filt" "c++filt --version"

    if [ ! -e ./vtable-dumper ] ; then
	check_tool "git" "git --version"
	check_tool "make" "make --version"
	check_tool "g++" "g++ --version"
    fi
}

TARGET=$1
readelf_target="${TARGET}.readelf"
sections_target="${TARGET}.sections"
vtable_target="${TARGET}.vtable"

if [ ! -f "${TARGET}" ] ; then
    echo "$0 <target>"
    exit 1
fi

check_tools

if [ ${TARGET} -nt ${readelf_target} ] ; then
    echo "Regenerating ${readelf_target}"
    $((readelf -sW ${TARGET}|c++filt > ${readelf_target}))
fi

if [ ${TARGET} -nt ${sections_target} ] ; then
    echo "Regenerating ${sections_target}"
    $((readelf --sections ${TARGET}|c++filt > ${sections_target}))
fi

VTABLE_ARG="-V ${vtable_target}"
if [ ${TARGET} -nt ${vtable_target} ] ; then
    `objdump -d ${TARGET} 2>/dev/null`
    if [ ! $? -eq 0 ]; then
	echo "Unable to do objdump, maybe ${TARGET} is for another platform"
	VTABLE_ARG=""
    else
	if [ ! -e ./vtable-dumper/vtable-dumper ] ; then
	    git clone XXX || exit 1
	    cd ./vtable-dumper
	    make
	    cd -
	fi
	if [ -x ./vtable-dumper/vtable-dumper ] ; then
	    echo "Regenerating ${vtable_target}"
	    $((./vtable-dumper/vtable-dumper --demangle ${TARGET}|c++filt > ${vtable_target}))
	else
	    echo "./vtable-dumper not available"
	    VTABLE_ARG=""
	fi
    fi
fi

./InterfaceDiscovery.py -f ${TARGET} -S ${readelf_target} -s ${sections_target} ${VTABLE_ARG} -c