#!/bin/bash


p4_edit () {
	chmod -R +w "$@" || true
}
p4_revert () {
	true
}

UNAME=$(uname)
if [ "$UNAME" == "Darwin" ]; then
	p4_edit "$1.dSYM/..."
	dsymutil "$1"
	p4 revert -a "$1.dSYM/..."
	exit 0;
fi

OBJCOPY=objcopy

function usage {
	echo "$0 /path/to/input/file [-o /path/to/output/file ]"
	echo ""
}

if [ $# == 0 ]; then
	usage
	exit 2
fi

if [ $(basename "$1") == "$1" ]; then
	INFILEDIR=$PWD
else
	INFILEDIR=$(cd "${1%/*}" && echo "$PWD")
fi
INFILE=$(basename "$1")

OUTFILEDIR=$INFILEDIR
OUTFILE=$INFILE.dbg

while getopts "o:" opt; do
	case $opt in
		o)
			OUTFILEDIR=$(cd "${OPTARG%/*}" && echo "$PWD")
			OUTFILE=$(basename "$OPTARG")
			;;
	esac
done

if [ "$OUTFILEDIR" != "$INFILEDIR" ]; then
	INFILE=${INFILEDIR}/${INFILE}
	OUTFILE=${OUTFILEDIR}/${OUTFILE}
fi

pushd "$INFILEDIR" || exit
p4_edit "$OUTFILE"
$OBJCOPY "$INFILE" "$OUTFILE"
$OBJCOPY --add-gnu-debuglink="$OUTFILE" "$INFILE"
p4_revert -a "$OUTFILE"
popd || exit