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| using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq; // .Net Framework 4.0
namespace TechScales
{
internal static class ContainerCodeValidation
{
/// <summary>
/// check alphanumeric container code,
/// code4:
/// J = EQUIPMENTS & TOOLS,
/// U = Universal,
/// Z = CHASSIS & TRAILER
/// </summary>
/// <param name="arg"></param>
/// <returns></returns>
public static string GetCheckDigitContainerID(this string arg)
{
if (string.IsNullOrWhiteSpace(arg))
return string.Concat(arg, "☺");
// remove space, make uppercase
var id = arg.Trim().Replace(" ", string.Empty).ToUpper();
// make 10 chars or take 10 chars
id = id.Length < 10 ?
id.PadRight(10, '0') :
(id.Length > 10 ? id.Substring(0, 10) : id);
// alphabet, numeric and space only
foreach (var s in id)
{
if (!"ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789".Contains(s))
return arg;
}
// valid code position 4th
var code4 = "JUZ";
for (var c = 0; c < "AAAX".Length; c++)
{
if (c < 3 &&
!"ABCDEFGHIJKLMNOPQRSTUVWXYZ".Contains(id[c]))
return arg;
if (c == 3 && !code4.Contains(id[c])) return arg;
}
for (var c = 0; c < 10; c++)
{ if (!"0123456789".Contains(id[c])) return arg; }
int numer = 0, azFrom = 10, azTo = 39;
var codAZ = Enumerable.Range(azFrom, (azTo - azFrom))
.Where(n => n % 11 > 0 && n <= azTo)
.ToArray();
var multi = new int[] { 1, 2, 4, 8, 16, 32, 64, 128, 256, 512 };
var codes = new List<int>();
try
{
var i = 0;
foreach (var s in id)
{
numer = 0;
if (i < 4) { numer = codAZ[(int)s - 65]; }
else { int.TryParse(s.ToString(), out numer); }
numer *= multi[i]; codes.Add(numer);
i++;
}
numer = codes.Sum();
numer -= (int)Math.Floor(numer / 11d) * 11;
id = string.Concat(id, " ", numer);
}
catch { id = string.Concat(id, "-1"); }
codAZ = null; multi = null; codes.Clear(); codes = null;
return id;
}
/// <summary>
/// extension: containe code validation
/// </summary>
/// <param name="arg"></param>
/// <returns></returns>
public static bool IsValidContainerCode(this string arg)
{
var ret = ""; return IsValidContainerCode(arg, ref ret);
}
/// <summary>
/// extension: containe code validation
/// </summary>
/// <param name="arg"></param>
/// <param name="result">filtered string</param>
/// <returns></returns>
public static bool IsValidContainerCode(
this string arg, ref string result)
{
var valid = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
// check valid string, check string length must be 11
var v0 = string.Join(string.Empty,
// make uppercase
arg.ToUpper()
// remove empty char
.Replace(" ", string.Empty)
// alphabet and numeric only
.Where(f => valid.Contains(f))
// as array for string.join purpose
.ToArray()); if (v0.Length != 11) { return false; }
// do checking methode, get result
var v1 = v0.GetCheckDigitContainerID().Replace(" ", "");
result = v0;
return v0 == v1;
}
}
}
|
