Work on error handling

src/libse/AutoTranslate/LibreTranslate.cs

@@ -50,10 +50,13 @@ namespace Nikse.SubtitleEdit.Core.AutoTranslate
             var content = new StringContent(input, Encoding.UTF8);
             content.Headers.ContentType = MediaTypeHeaderValue.Parse("application/json");
             var result = _httpClient.PostAsync("translate", content).Result;
-            result.EnsureSuccessStatusCode();
             var bytes = await result.Content.ReadAsByteArrayAsync();
             var json = Encoding.UTF8.GetString(bytes).Trim();
-
+            if (!result.IsSuccessStatusCode)
+            {
+                SeLogger.Error("LibreTranslate failed calling API: Status code=" + result.StatusCode + Environment.NewLine + json);
+            }
+            result.EnsureSuccessStatusCode();
             var parser = new SeJsonParser();
             var resultText = parser.GetFirstObject(json, "translatedText");
             if (resultText == null)

src/libse/Common/TextLengthCalculator/CalcIgnoreThaiCompositeCharacters.cs

@@ -0,0 +1,57 @@
+namespace Nikse.SubtitleEdit.Core.Common.TextLengthCalculator
+{
+    public class CalcIgnoreThaiCompositeCharacters : ICalcLength
+    {
+        /// <summary>
+        /// Calculate all text excluding Thai composite characters (tags are not counted).
+        /// Netflix rule: 35 characters per line (excluding all composite characters, i.e. tone marks, top and bottom vowels are not counted.
+        /// See https://partnerhelp.netflixstudios.com/hc/en-us/articles/220448308-Thai-Timed-Text-Style-Guide
+        /// </summary>
+        public decimal CountCharacters(string text, bool forCps)
+        {
+            const char zeroWidthSpace = '\u200B';
+            const char zeroWidthNoBreakSpace = '\uFEFF';
+            const string thaiCompositeCharacters = "ํู่๊ี้"; //TODO: not correct...
+            var length = 0;
+            var ssaTagOn = false;
+            var htmlTagOn = false;
+            var max = text.Length;
+            for (var i = 0; i < max; i++)
+            {
+                var ch = text[i];
+                if (ssaTagOn)
+                {
+                    if (ch == '}')
+                    {
+                        ssaTagOn = false;
+                    }
+                }
+                else if (htmlTagOn)
+                {
+                    if (ch == '>')
+                    {
+                        htmlTagOn = false;
+                    }
+                }
+                else if (ch == '{' && i < text.Length - 1 && text[i + 1] == '\\')
+                {
+                    ssaTagOn = true;
+                }
+                else if (ch == '<' && i < text.Length - 1 && (text[i + 1] == '/' || char.IsLetter(text[i + 1])) &&
+                         text.IndexOf('>', i) > 0 && TextLengthHelper.IsKnownHtmlTag(text, i))
+                {
+                    htmlTagOn = true;
+                }
+                else if (!char.IsControl(ch) &&
+                         ch != zeroWidthSpace &&
+                         ch != zeroWidthNoBreakSpace &&
+                         !thaiCompositeCharacters.Contains(ch))
+                {
+                    length++;
+                }
+            }
+
+            return length;
+        }
+    }
+}

src/ui/Forms/BeautifyTimeCodes/BeautifyTimeCodesProfileSimple.cs

@@ -120,11 +120,33 @@ namespace Nikse.SubtitleEdit.Forms.BeautifyTimeCodes
             Configuration.Settings.BeautifyTimeCodes.Profile.ConnectedSubtitlesRightRedZone = redZone;
             Configuration.Settings.BeautifyTimeCodes.Profile.ConnectedSubtitlesRightGreenZone = greenZone;
 
+
+            double treadConnectedMs = 0;
+            try
+            {
+                treadConnectedMs = Math.Round(SubtitleFormat.FramesToMilliseconds(gap, _frameRate) * 1.5);
+            }
+            catch (Exception exception)
+            {
+                SeLogger.Error(exception, "Error when executing: treadConnectedMs = Math.Round(SubtitleFormat.FramesToMilliseconds(gap, _frameRate) * 1.5); );");
                 SeLogger.Error("BeautifyTimeCodesProfileSimple.buttonOK_Click: Gap is " + gap);
                 SeLogger.Error("BeautifyTimeCodesProfileSimple.buttonOK_Click: FrameRate is " + _frameRate);
-            var treadConnectedMs = Math.Round(SubtitleFormat.FramesToMilliseconds(gap, _frameRate) * 1.5);
                 SeLogger.Error("BeautifyTimeCodesProfileSimple.buttonOK_Click: treadConnectedMs is " + treadConnectedMs);
+                throw;
+            }
+
+            try
+            {
                 Configuration.Settings.BeautifyTimeCodes.Profile.ConnectedSubtitlesTreatConnected = Convert.ToInt32(treadConnectedMs);
+            }
+            catch (Exception exception)
+            {
+                SeLogger.Error(exception, "Error when executing: Configuration.Settings.BeautifyTimeCodes.Profile.ConnectedSubtitlesTreatConnected = Convert.ToInt32(treadConnectedMs);");
+                SeLogger.Error("BeautifyTimeCodesProfileSimple.buttonOK_Click: Gap is " + gap);
+                SeLogger.Error("BeautifyTimeCodesProfileSimple.buttonOK_Click: FrameRate is " + _frameRate);
+                SeLogger.Error("BeautifyTimeCodesProfileSimple.buttonOK_Click: treadConnectedMs is " + treadConnectedMs);
+                throw;
+            }
 
             Configuration.Settings.BeautifyTimeCodes.Profile.ChainingGeneralUseZones = false;
             Configuration.Settings.BeautifyTimeCodes.Profile.ChainingGeneralMaxGap = Convert.ToInt32(numericUpDownChainingGap.Value);