function readOperator(D2fn, Hfn)
    d = readSectionedFile(D2fn)
    h = readSectionedFile(Hfn)

    # Create inner stencil
    innerStencilWeights = stringToTuple(Float64, d["inner_stencil"][1])
    width = length(innerStencilWeights)
    r = (-div(width,2), div(width,2))

    innerStencil = Stencil(r, innerStencilWeights)

    # Create boundary stencils
    boundarySize = length(d["boundary_stencils"])
    closureStencils = Vector{typeof(innerStencil)}() # TBD: is the the right way to get the correct type?

    for i ∈ 1:boundarySize
        stencilWeights = stringToTuple(Float64, d["boundary_stencils"][i])
        width = length(stencilWeights)
        r = (1-i,width-i)
        closureStencils = (closureStencils..., Stencil(r, stencilWeights))
    end

    quadratureClosure = pad_tuple(stringToTuple(Float64, h["closure"][1]), boundarySize)
    eClosure = Stencil((0,boundarySize-1), pad_tuple(stringToTuple(Float64, d["e"][1]), boundarySize))
    dClosure = Stencil((0,boundarySize-1), pad_tuple(stringToTuple(Float64, d["d1"][1]), boundarySize))

    d2 = D2(
        quadratureClosure,
        innerStencil,
        closureStencils,
        eClosure,
        dClosure,
        even
    )

    return d2
end

function readSectionedFile(filename)::Dict{String, Vector{String}}
    f = open(filename)
    sections = Dict{String, Vector{String}}()
    currentKey = ""

    for ln ∈ eachline(f)
        if ln == "" || ln[1] == '#' # Skip comments and empty lines
            continue
        end

        if isletter(ln[1]) # Found start of new section
            if ~haskey(sections, ln)
                sections[ln] =  Vector{String}()
            end
            currentKey = ln
            continue
        end

        push!(sections[currentKey], ln)
    end

    return sections
end

function stringToTuple(T::DataType, s::String)
    return Tuple(stringToVector(T,s))
end

function stringToVector(T::DataType, s::String)
    return T.(eval.(Meta.parse.(split(s))))
end

function pad_tuple(t::NTuple{N, T}, n::Integer) where {N,T}
    if N >= n
        return t
    else
        return pad_tuple((t..., zero(T)), n)
    end
end

sbp_operators_path() = (@__DIR__) * "/operators/"
export sbp_operators_path