func strerror()

in Sources/TSCBasic/misc.swift [318:343]

• 26 lines of code
• 5 McCabe index (conditional complexity)

        func strerror(_ errno: Int32) -> String {
          #if os(Windows)
            let cap = 128
            var buf = [Int8](repeating: 0, count: cap)
            let _ = TSCLibc.strerror_s(&buf, 128, errno)
            return "\(String(cString: buf)) (\(errno))"
          #else
            var cap = 64
            while cap <= 16 * 1024 {
                var buf = [Int8](repeating: 0, count: cap)
                let err = TSCLibc.strerror_r(errno, &buf, buf.count)
                if err == EINVAL {
                    return "Unknown error \(errno)"
                }
                if err == ERANGE {
                    cap *= 2
                    continue
                }
                if err != 0 {
                    fatalError("strerror_r error: \(err)")
                }
                return "\(String(cString: buf)) (\(errno))"
            }
            fatalError("strerror_r error: \(ERANGE)")
          #endif
        }