Moves argument related inner classes to own classes

src/main/java/net/knarcraft/ffmpegconverter/parser/ConverterArgument.java

@@ -0,0 +1,38 @@
+package net.knarcraft.ffmpegconverter.parser;
+
+/**
+ * A class representing an argument
+ */
+public class ConverterArgument {
+    private final String name;
+    private final boolean valueRequired;
+    private final ConverterArgumentValue valueType;
+
+    public ConverterArgument(String name, boolean valueRequired, ConverterArgumentValue valueType) {
+        this.name = name;
+        this.valueRequired = valueRequired;
+        this.valueType = valueType;
+    }
+
+    private boolean testArgumentValue(String value) {
+        if (value.length() == 0) {
+            return !valueRequired;
+        }
+        if (valueRequired && value.startsWith("-")) {
+            return false;
+        }
+        switch (valueType) {
+            case BOOLEAN:
+                String lower = value.toLowerCase();
+                return lower.equals("true") || lower.equals("false");
+            case COMMA_SEPARATED_LIST:
+                return !value.contains(" ");
+            case SINGLE_VALUE:
+                return !value.contains(" ");
+            case INT:
+                int ignored = Integer.parseInt(value);
+                return true;
+        }
+        return false;
+    }
+}

src/main/java/net/knarcraft/ffmpegconverter/parser/ConverterArgumentValue.java

@@ -0,0 +1,8 @@
+package net.knarcraft.ffmpegconverter.parser;
+
+public enum ConverterArgumentValue {
+    BOOLEAN,
+    COMMA_SEPARATED_LIST,
+    SINGLE_VALUE,
+    INT
+}