feat: Teilnehmerlisten in Lerngruppen importieren

2026-08-18 00:44:07 +02:00
parent cdac335ad1
commit 99efa3a0fe
11 changed files with 489 additions and 79 deletions
@@ -222,77 +222,4 @@ public sealed class StudentMasterDataCsvImportHandler : IImportHandler<ImportedS
    private static string? NullIfWhiteSpace(string? value) =>
        string.IsNullOrWhiteSpace(value) ? null : value.Trim();

-    private sealed record DelimitedRecord(int LineNumber, IReadOnlyList<string> Fields);
-
-    private static class DelimitedTextParser
-    {
-        public static bool TryParse(
-            string text,
-            char delimiter,
-            out List<DelimitedRecord> records,
-            out string? error)
-        {
-            records = [];
-            error = null;
-            var fields = new List<string>();
-            var field = new StringBuilder();
-            var inQuotes = false;
-            var line = 1;
-            var recordStartLine = 1;
-
-            for (var index = 0; index < text.Length; index++)
-            {
-                var current = text[index];
-                if (current == '"')
-                {
-                    if (inQuotes && index + 1 < text.Length && text[index + 1] == '"')
-                    {
-                        field.Append('"');
-                        index++;
-                    }
-                    else
-                    {
-                        inQuotes = !inQuotes;
-                    }
-                    continue;
-                }
-
-                if (current == delimiter && !inQuotes)
-                {
-                    fields.Add(field.ToString());
-                    field.Clear();
-                    continue;
-                }
-
-                if ((current == '\r' || current == '\n') && !inQuotes)
-                {
-                    if (current == '\r' && index + 1 < text.Length && text[index + 1] == '\n')
-                        index++;
-                    fields.Add(field.ToString());
-                    field.Clear();
-                    records.Add(new DelimitedRecord(recordStartLine, fields.ToList()));
-                    fields.Clear();
-                    line++;
-                    recordStartLine = line;
-                    continue;
-                }
-
-                if (current == '\n') line++;
-                field.Append(current);
-            }
-
-            if (inQuotes)
-            {
-                error = $"Ein Textfeld ab Zeile {recordStartLine} besitzt kein schließendes Anführungszeichen.";
-                return false;
-            }
-
-            if (field.Length > 0 || fields.Count > 0)
-            {
-                fields.Add(field.ToString());
-                records.Add(new DelimitedRecord(recordStartLine, fields.ToList()));
-            }
-            return true;
-        }
-    }
 }