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namespace Xmpp {
public class StanzaWriter {
public signal void cancel();
private OutputStream output;
private Queue<SourceFuncWrapper> queue = new Queue<SourceFuncWrapper>();
private bool running = false;
public StanzaWriter.for_stream(OutputStream output) {
this.output = output;
}
public async void write_node(StanzaNode node) throws IOError {
yield write_data(node.to_xml().data);
}
public async void write_nodes(StanzaNode node1, StanzaNode node2) throws IOError {
var data1 = node1.to_xml().data;
var data2 = node2.to_xml().data;
uint8[] concat = new uint8[data1.length + data2.length];
int i = 0;
foreach (var datum in data1) {
concat[i++] = datum;
}
foreach (var datum in data2) {
concat[i++] = datum;
}
yield write_data(concat);
}
public async void write(string s) throws IOError {
yield write_data(s.data);
}
private async void write_data(owned uint8[] data) throws IOError {
if (running) {
queue.push_tail(new SourceFuncWrapper(write_data.callback));
yield;
}
running = true;
try {
yield output.write_all_async(data, 0, null, null);
} catch (IOError e) {
cancel();
throw e;
} catch (GLib.Error e) {
cancel();
throw new IOError.FAILED("Error in GLib: %s".printf(e.message));
} finally {
SourceFuncWrapper? sfw = queue.pop_head();
if (sfw != null) {
sfw.sfun();
} else {
running = false;
}
}
}
}
public class SourceFuncWrapper : Object {
public SourceFunc sfun;
public SourceFuncWrapper(owned SourceFunc sfun) {
this.sfun = (owned)sfun;
}
}
}
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