58 lines
2.5 KiB
C#
58 lines
2.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace Multisplit
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{
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internal static class Program
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{
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private static void Main(string[] args)
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{
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foreach (var s in "a!===b=!=c".Multisplit(true, "==", "!=", "=")) // Split the string and return the separators.
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{
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Console.Write(s); // Write the returned substrings and separators to the console.
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}
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Console.WriteLine();
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}
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private static IEnumerable<string> Multisplit(this string s, bool returnSeparators = false,
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params string[] delimiters)
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{
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var currentString = new StringBuilder(); /* Initiate the StringBuilder. This will hold the current string to return
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* once we find a separator. */
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int index = 0; // Initiate the index counter at 0. This tells us our current position in the string to read.
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while (index < s.Length) // Loop through the string.
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{
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// This will get the highest priority separator found at the current index, or null if there are none.
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string foundDelimiter =
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(from delimiter in delimiters
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where s.Length >= index + delimiter.Length &&
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s.Substring(index, delimiter.Length) == delimiter
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select delimiter).FirstOrDefault();
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if (foundDelimiter != null)
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{
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yield return currentString.ToString(); // Return the current string.
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if (returnSeparators) // Return the separator, if the user specified to do so.
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yield return
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string.Format("{{\"{0}\", ({1}, {2})}}",
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foundDelimiter,
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index, index + foundDelimiter.Length);
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currentString.Clear(); // Clear the current string.
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index += foundDelimiter.Length; // Move the index past the current separator.
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}
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else
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{
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currentString.Append(s[index++]); // Add the character at this index to the current string.
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}
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}
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if (currentString.Length > 0)
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yield return currentString.ToString(); // If we have anything left over, return it.
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}
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}
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}
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