From 147a20385b106af38d624ccd60ed00cfa9c77d16 Mon Sep 17 00:00:00 2001
From: glax <johanna@bernloehr.eu>
Date: Thu, 25 May 2023 16:55:58 +0200
Subject: [PATCH] illegal filenames

---
 Tranga/Chapter.cs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Tranga/Chapter.cs b/Tranga/Chapter.cs
index 7d3e91a..ad9251b 100644
--- a/Tranga/Chapter.cs
+++ b/Tranga/Chapter.cs
@@ -1,4 +1,5 @@
 using System.Globalization;
+using System.Text.RegularExpressions;
 
 namespace Tranga;
 
@@ -14,14 +15,15 @@ public struct Chapter
     public string url { get; }
     public string fileName { get; }
     public string sortNumber { get; }
-
+    
+    private static readonly Regex LegalCharacters = new Regex(@"([A-z]*[0-9]* *\.*-*,*\]*\[*'*~*!*)*");
     public Chapter(string? name, string? volumeNumber, string? chapterNumber, string url)
     {
         this.name = name;
         this.volumeNumber = volumeNumber is { Length: > 0 } ? volumeNumber : "1";
         this.chapterNumber = chapterNumber;
         this.url = url;
-        string chapterName = string.Concat((name ?? "").Split(Path.GetInvalidFileNameChars()));
+        string chapterName = string.Concat(LegalCharacters.Matches(name ?? ""));
         NumberFormatInfo nfi = new NumberFormatInfo()
         {
             NumberDecimalSeparator = "."