#1339 packages Seem to work.

Still needs lots of cleanup

Author: jantje

io.sloeber.core/src/io/sloeber/core/Gson/GsonConverter.java

@@ -0,0 +1,40 @@
+package io.sloeber.core.Gson;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+
+import io.sloeber.core.api.VersionNumber;
+
+public class GsonConverter {
+    public static String getSafeString(JsonObject jsonObject, String fieldName) {
+        JsonElement field = jsonObject.get(fieldName);
+        if (field == null) {
+            return "no info found in file"; //$NON-NLS-1$
+        }
+        return field.getAsString();
+
+    }
+
+    public static VersionNumber getSafeVersion(JsonObject jsonObject, String fieldName) {
+        JsonElement field = jsonObject.get(fieldName);
+        if (field == null) {
+            return new VersionNumber("no version number provided"); //$NON-NLS-1$
+        }
+        return new VersionNumber(field.getAsString());
+
+    }
+
+    public static String getSafeString(JsonObject jsonObject, String fieldName1, String fieldName2) {
+        JsonElement field = jsonObject.get(fieldName1);
+        if (field != null) {
+            field = field.getAsJsonObject().get(fieldName2);
+            if (field != null) {
+                return field.getAsString();
+            }
+        }
+
+        return "no info found in file"; //$NON-NLS-1$
+
+    }
+
+}

io.sloeber.core/src/io/sloeber/core/Gson/LibraryDeserializer.java

@@ -22,9 +22,9 @@
 import org.eclipse.core.runtime.preferences.IEclipsePreferences;
 import org.eclipse.core.runtime.preferences.InstanceScope;
 
+import io.sloeber.core.api.Json.packages.ArduinoPlatform;
 import io.sloeber.core.common.Common;
 import io.sloeber.core.common.ConfigurationPreferences;
-import io.sloeber.core.managers.ArduinoPlatform;
 import io.sloeber.core.managers.InternalPackageManager;
 import io.sloeber.core.tools.Helpers;
 import io.sloeber.core.tools.KeyValue;