87 lines
3.2 KiB
C#
87 lines
3.2 KiB
C#
using System;
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using System.Collections.Generic;
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namespace DeukBot4.Utilities
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{
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public class EnglishNumberParser
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{
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private static readonly Dictionary<string, int> OneValues = new Dictionary<string, int>()
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{
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{"zero", 0}, {"a", 1}, {"an", 1}, {"one", 1}, {"two", 2}, {"three", 3}, {"four",4}, {"five", 5}, {"six", 6}, {"seven", 7},
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{"eight", 8}, {"nine", 9}
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};
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private static readonly Dictionary<string, int> TenValues = new Dictionary<string, int>()
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{
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{"ten", 10}, {"eleven", 11}, {"twelve", 12}, {"thirteen", 13}, {"fourteen", 14}, {"fifteen", 15},
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{"sixteen", 16}, {"seventeen", 17}, {"eighteen", 18}, {"nineteen", 19},
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{"twenty", 20}, {"thirty", 30}, {"forty",40}, {"fifty", 50}, {"sixty", 60}, {"seventy", 70},
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{"eighty", 80}, {"ninety", 90}
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};
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private static readonly Dictionary<string, int> HundredsValues = new Dictionary<string, int>()
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{
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{"hundred", 100}, {"thousand",1000}, {"million", 1_000_000}
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};
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public static bool ConvertNumberString(string numberString, out double number)
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{
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numberString = numberString.Replace("-", "").Replace(" ", "");
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var i = 0;
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while (numberString.Length > 0)
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{
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var next = ConvertNextNumber(ref numberString);
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if (!next.HasValue)
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{
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number = 0;
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return false;
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}
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i += next.Value;
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}
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number = i;
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return true;
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}
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private static int? ConvertNextNumber(ref string numberString)
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{
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foreach (var oneValue in OneValues)
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{
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if (numberString.EndsWith(oneValue.Key, StringComparison.InvariantCultureIgnoreCase))
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{
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numberString = numberString.Substring(0, numberString.Length - oneValue.Key.Length);
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return oneValue.Value;
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}
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}
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foreach (var oneValue in TenValues)
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{
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if (numberString.EndsWith(oneValue.Key, StringComparison.InvariantCultureIgnoreCase))
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{
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numberString = numberString.Substring(0, numberString.Length - oneValue.Key.Length);
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return oneValue.Value;
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}
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}
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foreach (var oneValue in HundredsValues)
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{
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if (numberString.EndsWith(oneValue.Key, StringComparison.InvariantCultureIgnoreCase))
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{
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numberString = numberString.Substring(0, numberString.Length - oneValue.Key.Length);
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var value = oneValue.Value;
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var next = ConvertNextNumber(ref numberString);
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if (next.HasValue)
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{
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if ((int)Math.Log10(next.Value) <= (int)Math.Log10(value))
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value *= next.Value;
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else
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{
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value += next.Value;
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}
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}
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return value;
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}
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}
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return null;
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}
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}
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} |