TheXamlGuy
49 lines
1.1 KiB
C#
49 lines
1.1 KiB
C#
using System;
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namespace Gma.QrCodeNet.Encoding.DataEncodation;
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public static class CharCountIndicatorTable
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{
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/// <remarks>ISO/IEC 18004:2000 Table 3 Page 18</remarks>
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public static int[] GetCharCountIndicatorSet()
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{
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return new int[] { 8, 16, 16 };
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}
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public static int GetBitCountInCharCountIndicator(int version)
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{
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int[] charCountIndicatorSet = GetCharCountIndicatorSet();
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int versionGroup = GetVersionGroup(version);
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return charCountIndicatorSet[versionGroup];
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}
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/// <summary>
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/// Used to define length of the Character Count Indicator <see cref="GetBitCountInCharCountIndicator"/>
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/// </summary>
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/// <returns>Returns the 0 based index of the row from Chapter 8.4 Data encodation, Table 3 — Number of bits in Character Count Indicator. </returns>
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private static int GetVersionGroup(int version)
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{
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if (version > 40)
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{
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throw new InvalidOperationException($"Unexpected version: {version}.");
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}
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else if (version >= 27)
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{
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return 2;
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}
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else if (version >= 10)
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{
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return 1;
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}
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else if (version > 0)
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{
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return 0;
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}
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else
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{
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throw new InvalidOperationException($"Unexpected version: {version}.");
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}
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}
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}
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