private static void ParseHeaders <T>(XmlNodeList nodes,
MessageFactory <T> mfact) where T : IsoMessage
{
ArrayList <XmlElement> refs = null;
for (var i = 0; i < nodes.Count; i++)
{
var elem = (XmlElement)nodes.Item(i);
if (elem != null)
{
var type = ParseType(elem.GetAttribute("type"));
if (type == -1)
{
throw new IOException($"Invalid type {elem.GetAttribute("type")} for ISO8583 header: ");
}
if (elem.ChildNodes == null || elem.ChildNodes.Count == 0)
{
if (elem.GetAttribute("ref") != null && !string.IsNullOrEmpty(elem.GetAttribute("ref")))
{
if (refs == null)
{
refs = new ArrayList <XmlElement>(nodes.Count - i);
}
refs.Add(elem);
}
else
{
throw new IOException("Invalid ISO8583 header element");
}
}
else
{
var header = elem.ChildNodes.Item(0).Value;
var binHeader = "true".Equals(elem.GetAttribute("binary"));
if (logger.IsEnabled(LogEventLevel.Debug))
{
var binary = binHeader ? "binary" : string.Empty;
logger.Debug(
$"Adding {binary} ISO8583 header for type {elem.GetAttribute("type")} : {header}");
}
if (binHeader)
{
mfact.SetBinaryIsoHeader(type,
HexCodec.HexDecode(header).ToUnsignedBytes());
}
else
{
mfact.SetIsoHeader(type,
header);
}
}
}
}
if (refs == null)
{
return;
}
{
foreach (var elem in refs)
{
if (elem == null)
{
continue;
}
var type = ParseType(elem.GetAttribute("type"));
if (type == -1)
{
throw new IOException("Invalid type for ISO8583 header: " + elem.GetAttribute("type"));
}
if (elem.GetAttribute("ref") == null || elem.GetAttribute("ref").IsEmpty())
{
continue;
}
var t2 = ParseType(elem.GetAttribute("ref"));
if (t2 == -1)
{
throw new IOException("Invalid type reference " + elem.GetAttribute("ref") +
" for ISO8583 header " + type);
}
var h = mfact.GetIsoHeader(t2);
if (h == null)
{
throw new ArgumentException("Header def " + type + " refers to nonexistent header " + t2);
}
if (logger.IsEnabled(LogEventLevel.Debug))
{
logger.Debug("Adding ISO8583 header for type {Type}: {H} (copied from {Ref})",
elem.GetAttribute("type"),
h,
elem.GetAttribute("ref"));
}
mfact.SetIsoHeader(type,
h);
}
}
}