trouble with roscd command when using colcon build on ROS1

Though colcon isn't designed for ROS1 system, I'd like to jump to package location like roscd and build package like catkin tools.

Here is a temporary solution, please copy and paste that to .bashrc

COLCON_ROOT=/home/user/colcon_ws

function colconcd () {
    local prefix path str arr
    prefix=${1%/}
    if [ $prefix ]; then
        path=`roscd ${prefix} && pwd`
        str=`cat $path/cmake/${prefix}Config.cmake | grep src | xargs`
        arr=(${str// / })
        cd ${arr[1]%")"}
    else
        cd $COLCON_ROOT
    fi
}

function colcon-build () {
    local path
    path=`pwd`
    if [ $1 ]; then
        cd $COLCON_ROOT
        colcon build --packages-select ${1%/}
        cd $path
    else
        cd $COLCON_ROOT
        colcon $COLCON_ROOT/build
        cd $path
    fi
}

complete -F "_roscomplete_sub_dir" -o "nospace" "colconcd"
complete -F "_roscomplete_sub_dir" -o "nospace" "colcon-build"

colconcd command works like roscd and you can build specific package anywhere in work space with colcon-build.