From 8f7d699b4eb627b1c7e9f7255bf8e1b51d18ed26 Mon Sep 17 00:00:00 2001
From: Lorenz Stechauner <lorenz.stechauner@necronda.net>
Date: Fri, 18 Aug 2023 20:42:47 +0200
Subject: [PATCH] Implement sqlite REGEXP

---
 Elwig/Windows/QueryWindow.xaml.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Elwig/Windows/QueryWindow.xaml.cs b/Elwig/Windows/QueryWindow.xaml.cs
index a26bd8e..6bcc98b 100644
--- a/Elwig/Windows/QueryWindow.xaml.cs
+++ b/Elwig/Windows/QueryWindow.xaml.cs
@@ -3,6 +3,7 @@ using Microsoft.Data.Sqlite;
 using System;
 using System.Collections.Generic;
 using System.Data.Common;
+using System.Text.RegularExpressions;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Data;
@@ -26,6 +27,7 @@ namespace Elwig.Windows {
             IList<DbColumn> header;
 
             using (var cnx = new SqliteConnection(AppDbContext.ConnectionString)) {
+                cnx.CreateFunction<string, string?, bool?>("REGEXP", (pattern, value) => value == null ? null : Regex.Match(value, pattern).Success, true);
                 cnx.Open();
                 var cmd = cnx.CreateCommand();
                 cmd.CommandText = sqlQuery;