//
//  DataTrimming.swift
//  iris
//
//  Created by Codex.
//

import Foundation

extension Data {
    func trimmedTrailingWhitespace() -> Data {
        guard !isEmpty else { return self }
        var endIndex = count
        while endIndex > 0 {
            let b = self[endIndex - 1]
            if b == 0x0A || b == 0x0D || b == 0x20 || b == 0x09 {
                endIndex -= 1
            } else {
                break
            }
        }
        return prefix(endIndex)
    }
}