From cc8fc8685df570e5ab7cb0620f9f5836bd44ef7a Mon Sep 17 00:00:00 2001
From: Alan Young <consult.awy@gmail.com>
Date: Mon, 6 Jul 2015 09:52:25 +0200
Subject: Add GenericPayloadLoader & GenericPayloadPersister classes.

Implemented as separate classes for Stroke, rather than as single
combined class in Swiften because of type-erasure.

Make VCardSerializer & DiscoInfoSerializer generally visible (public).

Change-Id: I9e93c71377c417949da1c70e4219d3813a066087

diff --git a/src/com/isode/stroke/entity/GenericPayloadLoader.java b/src/com/isode/stroke/entity/GenericPayloadLoader.java
new file mode 100644
index 0000000..67636bd
--- /dev/null
+++ b/src/com/isode/stroke/entity/GenericPayloadLoader.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2015, Isode Limited.
+ * All rights reserved.
+ */
+package com.isode.stroke.entity;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+import com.isode.stroke.elements.Payload;
+import com.isode.stroke.parser.AttributeMap;
+import com.isode.stroke.parser.PayloadParser;
+import com.isode.stroke.parser.PlatformXMLParserFactory;
+import com.isode.stroke.parser.XMLParser;
+import com.isode.stroke.parser.XMLParserClient;
+
+public class GenericPayloadLoader<PayloadType extends Payload, Parser extends PayloadParser> {
+	
+	private final Parser parser;
+
+	public GenericPayloadLoader(Parser parser) {
+		this.parser = parser;
+	}
+	
+	@SuppressWarnings("unchecked")
+	public PayloadType loadPayload(final InputStream is) throws IOException {
+		if (is == null) return null;
+		final StringBuilder sb = new StringBuilder(2048);
+		final char[] read = new char[2048];
+		final InputStreamReader ir = new InputStreamReader(is, "UTF-8");
+		for (int i; -1 != (i = ir.read(read)); sb.append(read, 0, i));
+		
+		final XMLParser xmlParser = PlatformXMLParserFactory.createXMLParser(new ParserClient(parser));
+		xmlParser.parse(sb.toString());
+		
+		return (PayloadType) parser.getPayload();
+	}
+
+	private static class ParserClient implements XMLParserClient {
+		private final PayloadParser parser;
+		
+		public ParserClient(PayloadParser parser) {
+			this.parser = parser;
+		}
+
+		@Override
+		public void handleStartElement(String element, String ns, AttributeMap attributes) {
+			parser.handleStartElement(element, ns, attributes);
+		}
+
+		@Override
+		public void handleEndElement(String element, String ns) {
+			parser.handleEndElement(element, ns);
+		}
+
+		@Override
+		public void handleCharacterData(String data) {
+			parser.handleCharacterData(data);
+		}
+		
+	}
+
+}
diff --git a/src/com/isode/stroke/entity/GenericPayloadPersister.java b/src/com/isode/stroke/entity/GenericPayloadPersister.java
new file mode 100644
index 0000000..5cda8ec
--- /dev/null
+++ b/src/com/isode/stroke/entity/GenericPayloadPersister.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2015, Isode Limited.
+ * All rights reserved.
+ */
+package com.isode.stroke.entity;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+
+import com.isode.stroke.elements.Payload;
+import com.isode.stroke.serializer.PayloadSerializer;
+
+public class GenericPayloadPersister<PayloadType extends Payload, Serializer extends PayloadSerializer> {
+	
+	private final Serializer serializer;
+	
+	public GenericPayloadPersister(Serializer serializer) {
+		this.serializer = serializer;
+	}
+	
+	public void savePayload(PayloadType payload, OutputStream os) throws IOException {
+		String s = serializer.serialize(payload);
+		OutputStreamWriter ow = new OutputStreamWriter(os, "UTF-8");
+		ow.append(s);
+		ow.close();
+	}
+}
diff --git a/src/com/isode/stroke/serializer/payloadserializers/DiscoInfoSerializer.java b/src/com/isode/stroke/serializer/payloadserializers/DiscoInfoSerializer.java
index 563eb53..616fadb 100644
--- a/src/com/isode/stroke/serializer/payloadserializers/DiscoInfoSerializer.java
+++ b/src/com/isode/stroke/serializer/payloadserializers/DiscoInfoSerializer.java
@@ -15,7 +15,7 @@ import com.isode.stroke.serializer.GenericPayloadSerializer;
 import com.isode.stroke.serializer.xml.XMLElement;
 import com.isode.stroke.serializer.xml.XMLRawTextNode;
 
-class DiscoInfoSerializer extends GenericPayloadSerializer<DiscoInfo>{
+public class DiscoInfoSerializer extends GenericPayloadSerializer<DiscoInfo>{
 
     public DiscoInfoSerializer() {
         super(DiscoInfo.class);
diff --git a/src/com/isode/stroke/serializer/payloadserializers/VCardSerializer.java b/src/com/isode/stroke/serializer/payloadserializers/VCardSerializer.java
index 8a98f46..9d460fa 100644
--- a/src/com/isode/stroke/serializer/payloadserializers/VCardSerializer.java
+++ b/src/com/isode/stroke/serializer/payloadserializers/VCardSerializer.java
@@ -13,7 +13,7 @@ import com.isode.stroke.serializer.xml.XMLElement;
 import com.isode.stroke.serializer.xml.XMLRawTextNode;
 import com.isode.stroke.stringcodecs.Base64;
 
-class VCardSerializer extends GenericPayloadSerializer<VCard>{
+public class VCardSerializer extends GenericPayloadSerializer<VCard>{
     
     public VCardSerializer() {
         super(VCard.class);
-- 
cgit v0.10.2-6-g49f6