1 files changed, 35 insertions, 0 deletions
diff --git a/src/main/java/at/bitfire/vcard4android/contactrow/DataRowHandler.kt b/src/main/java/at/bitfire/vcard4android/contactrow/DataRowHandler.kt
new file mode 100644
index 0000000..d8401b8
--- /dev/null
+++ b/src/main/java/at/bitfire/vcard4android/contactrow/DataRowHandler.kt
@@ -0,0 +1,35 @@
+package at.bitfire.vcard4android.contactrow
+
+import android.content.ContentValues
+import androidx.annotation.CallSuper
+import at.bitfire.vcard4android.Contact
+
+/**
+ * Handler for a raw contact's data row.
+ *
+ * @param provider      content provider client that has been used to fetch the data row;
+ *                      may be used by the handler to fetch further data (like a photo)
+ *
+ */
+abstract class DataRowHandler {
+
+    abstract fun forMimeType(): String
+
+    /**
+     * Processes the given data.
+     *
+     * @param values   values to process
+     * @param contact  contact that is modified according to the values
+     */
+    @CallSuper
+    open fun handle(values: ContentValues, contact: Contact) {
+        // remove empty strings
+        val it = values.keySet().iterator()
+        while (it.hasNext()) {
+            val obj = values[it.next()]
+            if (obj is String && obj.isEmpty())
+                it.remove()
+        }
+    }
+
+}
+\ No newline at end of file