Rename Concelier Source modules to Connector

src/StellaOps.Concelier.Connector.Distro.Suse/Internal/SuseChangesParser.cs

@@ -0,0 +1,81 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+
+namespace StellaOps.Concelier.Connector.Distro.Suse.Internal;
+
+internal static class SuseChangesParser
+{
+    public static IReadOnlyList<SuseChangeRecord> Parse(string csv)
+    {
+        if (string.IsNullOrWhiteSpace(csv))
+        {
+            return Array.Empty<SuseChangeRecord>();
+        }
+
+        var records = new List<SuseChangeRecord>();
+        using var reader = new StringReader(csv);
+        string? line;
+        while ((line = reader.ReadLine()) is not null)
+        {
+            if (string.IsNullOrWhiteSpace(line))
+            {
+                continue;
+            }
+
+            var parts = SplitCsvLine(line);
+            if (parts.Length < 2)
+            {
+                continue;
+            }
+
+            var fileName = parts[0].Trim();
+            if (string.IsNullOrWhiteSpace(fileName))
+            {
+                continue;
+            }
+
+            if (!DateTimeOffset.TryParse(parts[1], CultureInfo.InvariantCulture, DateTimeStyles.AssumeUniversal, out var modifiedAt))
+            {
+                continue;
+            }
+
+            records.Add(new SuseChangeRecord(fileName, modifiedAt.ToUniversalTime()));
+        }
+
+        return records;
+    }
+
+    private static string[] SplitCsvLine(string line)
+    {
+        var values = new List<string>(2);
+        var current = string.Empty;
+        var insideQuotes = false;
+
+        foreach (var ch in line)
+        {
+            if (ch == '"')
+            {
+                insideQuotes = !insideQuotes;
+                continue;
+            }
+
+            if (ch == ',' && !insideQuotes)
+            {
+                values.Add(current);
+                current = string.Empty;
+                continue;
+            }
+
+            current += ch;
+        }
+
+        if (!string.IsNullOrEmpty(current))
+        {
+            values.Add(current);
+        }
+
+        return values.ToArray();
+    }
+}