Command line parser supports list options with -add suffix. Fixex #619.

src/MpvNet/CommandLine.cs

@@ -0,0 +1,73 @@
+
+namespace MpvNet;
+
+public class CommandLine
+{
+    static List<StringPair>? _arguments;
+
+    public static List<StringPair> Arguments
+    {
+        get
+        {
+            if (_arguments != null)
+                return _arguments;
+
+            _arguments = new();
+
+            foreach (string i in Environment.GetCommandLineArgs().Skip(1))
+            {
+                string arg = i;
+
+                if (!arg.StartsWith("--"))
+                    continue;
+
+                if (!arg.Contains('='))
+                {
+                    if (arg.Contains("--no-"))
+                    {
+                        arg = arg.Replace("--no-", "--");
+                        arg += "=no";
+                    }
+                    else
+                        arg += "=yes";
+                }
+
+                string left = arg[2..arg.IndexOf("=")];
+                string right = arg[(left.Length + 3)..];
+
+                if (string.IsNullOrEmpty(left))
+                    continue;
+
+                switch (left)
+                {
+                    case "script": left = "scripts"; break;
+                    case "audio-file": left = "audio-files"; break;
+                    case "sub-file": left = "sub-files"; break;
+                    case "external-file": left = "external-files"; break;
+                }
+
+                _arguments.Add(new StringPair(left, right));
+            }
+
+            return _arguments;
+        }
+    }
+
+    public static bool Contains(string name)
+    {
+        foreach (StringPair pair in Arguments)
+            if (pair.Name == name)
+                return true;
+
+        return false;
+    }
+
+    public static string GetValue(string name)
+    {
+        foreach (StringPair pair in Arguments)
+            if (pair.Name == name)
+                return pair.Value;
+
+        return "";
+    }
+}