1 files changed, 104 insertions, 0 deletions
diff --git a/src/main/java/eu/siacs/conversations/parser/AbstractParser.java b/src/main/java/eu/siacs/conversations/parser/AbstractParser.java
new file mode 100644
index 00000000..51dc398a
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/parser/AbstractParser.java
@@ -0,0 +1,104 @@
+package eu.siacs.conversations.parser;
+
+import android.util.Log;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Locale;
+
+import javax.xml.datatype.DatatypeConfigurationException;
+import javax.xml.datatype.DatatypeFactory;
+
+import eu.siacs.conversations.entities.Account;
+import eu.siacs.conversations.entities.Contact;
+import eu.siacs.conversations.services.XmppConnectionService;
+import eu.siacs.conversations.xml.Element;
+import eu.siacs.conversations.xmpp.jid.Jid;
+import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
+
+public abstract class AbstractParser {
+
+	protected XmppConnectionService mXmppConnectionService;
+
+	protected AbstractParser(XmppConnectionService service) {
+		this.mXmppConnectionService = service;
+	}
+
+    /**
+     * Gets the timestamp from the 'delay' element.
+     * Refer to XEP-0203: Delayed Delivery for details. @link{http://xmpp.org/extensions/xep-0203.html}
+     * @param packet the element to find the child element 'delay' in.
+     * @return the time in milli seconds of the attribute 'stamp' of the
+     *  element 'delay'. In case there is no 'delay' element or no 'stamp'
+     *  attribute or the current time is less than the value of the 'stamp'
+     *  attribute the current time is returned.
+     */
+	public static Long getTimestamp(Element element, Long defaultValue) {
+		Element delay = element.findChild("delay","urn:xmpp:delay");
+		if (delay != null) {
+			String stamp = delay.getAttribute("stamp");
+			if (stamp != null) {
+				try {
+					return AbstractParser.parseTimestamp(delay.getAttribute("stamp")).getTime();
+				} catch (ParseException e) {
+					return defaultValue;
+				}
+			}
+		}
+		return defaultValue;
+	}
+
+	protected long getTimestamp(Element packet) {
+		return getTimestamp(packet,System.currentTimeMillis());
+	}
+
+    /**
+     * Parses the timestamp according to XEP-0082: XMPP Date and Time Profiles.
+     * @link{http://xmpp.org/extensions/xep-0082.html}
+     *
+     * @param timestamp the timestamp to parse
+     * @return Date
+     * @throws ParseException
+     */
+	public static Date parseTimestamp(String timestamp) throws ParseException {
+        /*try {
+            Logging.d("TIMESTAMP", timestamp);
+            return DatatypeFactory.newInstance().newXMLGregorianCalendar(timestamp).toGregorianCalendar().getTime();
+        } catch (DatatypeConfigurationException e) {
+            Logging.d("TIMESTAMP", e.getMessage());
+            return new Date();
+        }*/
+        timestamp = timestamp.replace("Z", "+0000");
+        SimpleDateFormat dateFormat;
+        timestamp = timestamp.substring(0,19)+timestamp.substring(timestamp.length() -5,timestamp.length());
+        dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ",Locale.US);
+        return dateFormat.parse(timestamp);
+	}
+
+	protected void updateLastseen(final Element packet, final Account account,
+			final boolean presenceOverwrite) {
+		final Jid from = packet.getAttributeAsJid("from");
+        updateLastseen(packet, account, from, presenceOverwrite);
+    }
+
+	protected void updateLastseen(final Element packet, final Account account, final Jid from, final boolean presenceOverwrite) {
+		final String presence = from == null || from.isBareJid() ? "" : from.getResourcepart();
+		final Contact contact = account.getRoster().getContact(from);
+		final long timestamp = getTimestamp(packet);
+		if (timestamp >= contact.lastseen.time) {
+			contact.lastseen.time = timestamp;
+			if (!presence.isEmpty() && presenceOverwrite) {
+				contact.lastseen.presence = presence;
+			}
+		}
+	}
+
+	protected String avatarData(Element items) {
+		Element item = items.findChild("item");
+		if (item == null) {
+			return null;
+		}
+		return item.findChildContent("data", "urn:xmpp:avatar:data");
+	}
+}