RegName – Blame information for rev 1
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1 | office | 1 | using System.Collections.Generic; |
2 | using System.Linq; |
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3 | |||
4 | namespace RegName.Utilities |
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5 | { |
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6 | public static class Helpers |
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7 | { |
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8 | #region Public Enums, Properties and Fields |
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9 | |||
10 | public enum IncrementMode |
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11 | { |
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12 | AlphaNumeric = 1, |
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13 | |||
14 | Alpha = 2, |
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15 | |||
16 | Numeric = 3 |
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17 | } |
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18 | |||
19 | #endregion |
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20 | |||
21 | #region Public Methods |
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22 | |||
23 | /// <summary> |
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24 | /// Alpha-numeric increment for strings. |
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25 | /// </summary> |
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26 | /// <param name="text">the string to increment</param> |
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27 | /// <param name="mode">the increment mode</param> |
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28 | /// <returns>an incremented string</returns> |
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29 | /// <remarks>https://stackoverflow.com/questions/26174022/incrementing-an-alphanumeric-string</remarks> |
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30 | public static string Increment(string text, IncrementMode mode) |
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31 | { |
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32 | var textArr = text.ToCharArray(); |
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33 | |||
34 | // Add legal characters |
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35 | var characters = new List<char>(); |
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36 | |||
37 | if (mode == IncrementMode.AlphaNumeric || mode == IncrementMode.Numeric) |
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38 | { |
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39 | for (var c = '0'; c <= '9'; c++) |
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40 | { |
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41 | characters.Add(c); |
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42 | } |
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43 | } |
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44 | |||
45 | if (mode == IncrementMode.AlphaNumeric || mode == IncrementMode.Alpha) |
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46 | { |
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47 | for (var c = 'a'; c <= 'z'; c++) |
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48 | { |
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49 | characters.Add(c); |
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50 | } |
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51 | } |
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52 | |||
53 | // Loop from end to beginning |
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54 | for (var i = textArr.Length - 1; i >= 0; i--) |
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55 | { |
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56 | if (textArr[i] == characters.Last()) |
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57 | { |
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58 | textArr[i] = characters.First(); |
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59 | } |
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60 | else |
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61 | { |
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62 | textArr[i] = characters[characters.IndexOf(textArr[i]) + 1]; |
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63 | break; |
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64 | } |
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65 | } |
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66 | |||
67 | return new string(textArr); |
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68 | } |
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69 | |||
70 | #endregion |
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71 | } |
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72 | } |