Add new sub format - thx uckthis :)

Fix #3959

libse/LibSE.csproj

@@ -210,6 +210,7 @@
     <Compile Include="SeJsonParser.cs" />
     <Compile Include="SeLogger.cs" />
     <Compile Include="RulesProfile.cs" />
+    <Compile Include="SubtitleFormats\UnknownSubtitle94.cs" />
     <Compile Include="SubtitleFormats\UnknownSubtitle93.cs" />
     <Compile Include="SubtitleFormats\DCinemaSmpte2014.cs" />
     <Compile Include="SubtitleFormats\ESubXf.cs" />

libse/SubtitleFormats/SubtitleFormat.cs

@@ -293,7 +293,8 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
                     new UnknownSubtitle90(),
                     new UnknownSubtitle91(),
                     new UnknownSubtitle92(),
-                    new UnknownSubtitle93()
+                    new UnknownSubtitle93(),
+                    new UnknownSubtitle94()
                 };
 
                 string path = Configuration.PluginsDirectory;

libse/SubtitleFormats/UnknownSubtitle94.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Text;
+using System.Text.RegularExpressions;
+
+namespace Nikse.SubtitleEdit.Core.SubtitleFormats
+{
+    public class UnknownSubtitle94 : SubtitleFormat
+    {
+        private static readonly Regex RegexTimeCodes = new Regex(@"^\d+:\d+\t+\d+:\d+\t.*", RegexOptions.Compiled);
+
+        public override string Extension => ".txt";
+
+        public override string Name => "Unknown 94";
+
+        public override string ToText(Subtitle subtitle, string title)
+        {
+            var sb = new StringBuilder();
+            foreach (var p in subtitle.Paragraphs)
+            {
+                //0:13	0:14	I'm from Londrina, Paraná, Brasil.
+                sb.AppendLine($"{EncodeTimeCode(p.StartTime)}\t{EncodeTimeCode(p.EndTime)}\t{HtmlUtil.RemoveHtmlTags(p.Text, true).Replace(Environment.NewLine, " ")}");
+            }
+            return sb.ToString();
+        }
+
+        private static string EncodeTimeCode(TimeCode time)
+        {
+            return $"{(int)(time.TotalSeconds / 60):0}:{time.Seconds:00}";
+        }
+
+        public override void LoadSubtitle(Subtitle subtitle, List<string> lines, string fileName)
+        {
+            subtitle.Paragraphs.Clear();
+            _errorCount = 0;
+            foreach (string line in lines)
+            {
+                var s = line.Trim();
+                if (RegexTimeCodes.IsMatch(s))
+                {
+                    var arr = s.Split('\t');
+                    string start = arr[0];
+                    string end = arr[1];
+                    var text = arr[2];
+                    var p = new Paragraph(DecodeTimeCode(start), DecodeTimeCode(end), text);
+                    subtitle.Paragraphs.Add(p);
+                }
+                else
+                {
+                    _errorCount++;
+                    if (_errorCount > 20)
+                    {
+                        return;
+                    }
+                }
+            }
+            subtitle.Renumber();
+        }
+
+        private static TimeCode DecodeTimeCode(string secondsAndMilliseconds)
+        {
+            var arr = secondsAndMilliseconds.Split(':');
+
+            // minutes to milliseconds
+            var totalMilliseconds = double.Parse(arr[0], NumberStyles.None, CultureInfo.InvariantCulture) * TimeCode.BaseUnit * 60;
+
+            // seconds to milliseconds
+            totalMilliseconds += double.Parse(arr[1], NumberStyles.None, CultureInfo.InvariantCulture) * TimeCode.BaseUnit;
+            return new TimeCode(totalMilliseconds);
+        }
+    }
+}