Handle SCSI error count (fixes #806)

CHANGELIST.md

@@ -159,6 +159,7 @@
 - Fix short name test
 - Update RedumpLib to 1.6.4
 - Fix misunderstanding on perfect offset
+- Handle SCSI error count
 
 ### 3.2.4 (2024-11-24)
 

MPF.Processors.Test/RedumperTests.cs

@@ -974,6 +974,37 @@ namespace MPF.Processors.Test
 
         #endregion
 
+        #region GetSCSIErrorCount
+
+        [Fact]
+        public void GetSCSIErrorCount_Empty_Null()
+        {
+            long expected = -1;
+            string log = string.Empty;
+            long actual = Redumper.GetSCSIErrorCount(log);
+            Assert.Equal(expected, actual);
+        }
+
+        [Fact]
+        public void GetSCSIErrorCount_Invalid_Null()
+        {
+            long expected = -1;
+            string log = "INVALID";
+            long actual = Redumper.GetSCSIErrorCount(log);
+            Assert.Equal(expected, actual);
+        }
+
+        [Fact]
+        public void GetSCSIErrorCount_Valid_Filled()
+        {
+            long expected = 12345;
+            string log = Path.Combine(Environment.CurrentDirectory, "TestData", "Redumper", "CDROM", "test.log");
+            long actual = Redumper.GetSCSIErrorCount(log);
+            Assert.Equal(expected, actual);
+        }
+
+        #endregion
+
         #region GetSecuROMData
 
         [Fact]

MPF.Processors.Test/TestData/Redumper/CDROM/test.log

@@ -126,6 +126,10 @@ SS [
         00E0 TEST DATA
         00F0 TEST DATA
 
+<< GetSCSIErrorCount >>
+SCSI: 23456 samples
+SCSI: 12345
+
 << GetSecuROMData >>
 SecuROM [
     version: 0

MPF.Processors/Redumper.cs

@@ -111,6 +111,10 @@ namespace MPF.Processors
                         info.SizeAndChecksums!.Layerbreak3 = !string.IsNullOrEmpty(layerbreak3) ? long.Parse(layerbreak3) : default;
                     }
 
+                    // Attempt to get the error count
+                    long scsiErrors = GetSCSIErrorCount($"{basePath}.log");
+                    info.CommonDiscInfo!.ErrorsCount = (scsiErrors == -1 ? "Error retrieving error count" : scsiErrors.ToString());;
+
                     // Bluray-specific options
                     if (Type == MediaType.BluRay)
                     {
@@ -1757,6 +1761,50 @@ namespace MPF.Processors
             }
         }
 
+        /// <summary>
+        /// Get the SCSI error count from the input files, if possible
+        /// </summary>
+        /// <param name="log">Log file location</param>
+        /// <returns>SCSI error count on success, -1 on error</returns>
+        /// TODO: Remove when Redumper adds this to normal errors
+        internal static long GetSCSIErrorCount(string log)
+        {
+            // If the file doesn't exist, we can't get info from it
+            if (string.IsNullOrEmpty(log))
+                return -1;
+            if (!File.Exists(log))
+                return -1;
+
+            try
+            {
+                using var sr = File.OpenText(log);
+
+                // Find the error counts
+                while (!sr.EndOfStream)
+                {
+                    var line = sr.ReadLine()?.Trim();
+                    if (line == null)
+                        break;
+
+                    // SCSI: <error count>
+                    if (line.StartsWith("SCSI: ") && !line.EndsWith("samples"))
+                    {
+                        string[] parts = line.Split(' ');
+                        if (long.TryParse(parts[1], out long scsiErrors))
+                            return scsiErrors;
+                    }
+                }
+
+                // We couldn't detect it then
+                return -1;
+            }
+            catch
+            {
+                // We don't care what the exception is right now
+                return -1;
+            }
+        }
+
         /// <summary>
         /// Get the SecuROM data from the input file, if possible
         /// </summary>