41 lines
1.4 KiB
C#
41 lines
1.4 KiB
C#
namespace Ficdown.Parser.Engine
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{
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using System.Text;
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using System.Text.RegularExpressions;
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internal static class RegexLib
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{
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public static Regex Anchors = new Regex(string.Format(@"(?<anchor>\[(?<text>{0})\]\([ ]*(?<href>{1})[ ]*\))",
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GetNestedBracketsPattern(), GetNestedParensPattern()),
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RegexOptions.Singleline | RegexOptions.Compiled);
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private const int _nestDepth = 6;
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private static string RepeatString(string text, int count)
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{
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var sb = new StringBuilder(text.Length * count);
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for (int i = 0; i < count; i++)
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sb.Append(text);
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return sb.ToString();
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}
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private static string _nestedBracketsPattern;
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private static string GetNestedBracketsPattern()
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{
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if (_nestedBracketsPattern == null)
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_nestedBracketsPattern =
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RepeatString(@"(?>[^\[\]]+|\[", _nestDepth) + RepeatString(@"\])*", _nestDepth);
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return _nestedBracketsPattern;
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}
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private static string _nestedParensPattern;
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private static string GetNestedParensPattern()
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{
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if (_nestedParensPattern == null)
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_nestedParensPattern =
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RepeatString(@"(?>[^()\s]+|\(", _nestDepth) + RepeatString(@"\))*", _nestDepth);
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return _nestedParensPattern;
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}
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}
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}
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