private ElementListValue ParseElementType(String name, String typeSpec)
{
String type = "";
UInt16? size = null;
String sizeText = null;
try
{
int sizeBracketPos = typeSpec.IndexOf('[');
if (sizeBracketPos > 0)
{
int sizeStartPos = sizeBracketPos + 1;
type = typeSpec.Substring(0, sizeBracketPos).Trim().ToUpper();
int sizeEndBracketPos = typeSpec.IndexOf(']', sizeStartPos);
if (sizeEndBracketPos > sizeBracketPos)
{
try
{
sizeText = typeSpec.Substring(sizeStartPos, sizeEndBracketPos - sizeStartPos).Trim();
size = System.Convert.ToUInt16(sizeText);
sizeText = null;
}
catch (System.FormatException) // sizeText will be contain the size variable name
{
}
}
}
else if (sizeBracketPos == -1)
{
type = typeSpec.Trim().ToUpper();
}
}
catch (Exception)
{
return null;
}
ElementListValue val = new ElementListValue();
val.Name = name;
val.Type = type;
val.Size = size;
val.SizeName = sizeText;
return val;
}
private void LoadElements()
{
_ElementList = new ObservableCollection<ElementListValue>();
foreach (XmlNode e in settings.ChildNodes)
{
if (e.NodeType == XmlNodeType.Element && e.Name == "element")
{
XmlAttribute name = (XmlAttribute)e.Attributes.GetNamedItem("name");
XmlAttribute type = (XmlAttribute)e.Attributes.GetNamedItem("type");
XmlAttribute value = (XmlAttribute)e.Attributes.GetNamedItem("value");
XmlAttribute excludeFromChecksum = (XmlAttribute)e.Attributes.GetNamedItem("excludefromchecksum");
if (name != null && type != null)
{
ElementListValue element = ParseElementType(name.Value, type.Value);
if (element != null)
{
if (value != null)
{
element.ValueString = value.Value;
if (element.ValueIsHex)
{
element.ValueBytes = SystemServices.HexToBytes(element.ValueString);
element.Size = (UInt16)element.ValueBytes.Length;
}
else
element.Size = (UInt16)element.ValueString.Length;
}
if (excludeFromChecksum != null)
element.ExcludeFromChecksum = excludeFromChecksum.Value == "true";
_ElementList.Add(element);
}
}
else if (value != null)
{
ElementListValue element = new ElementListValue();
element.Type = "BYTE";
element.ValueString = value.Value;
if (element.ValueIsHex)
{
element.ValueBytes = SystemServices.HexToBytes(element.ValueString);
element.Size = (UInt16)element.ValueBytes.Length;
}
else
element.Size = (UInt16)element.ValueString.Length;
if (excludeFromChecksum != null)
element.ExcludeFromChecksum = excludeFromChecksum.Value == "true";
_ElementList.Add(element);
}
}
}
}