IEnumerable <KeyValuePair <string, string []> > GetFilters(string [] filters, int nSkip)
{
foreach (string current in filters.Skip(nSkip))
{
string[] filterParts = current.Split(new char[] { '+', ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (filterParts.Length < 2)
{
bHasError = true;
InternalError.Print("The configuration string {0} did have an unmatched type severity or level filter part: {0}", current);
}
yield return(new KeyValuePair <string, string []>(filterParts[0], filterParts.Skip(1).ToArray()));
}
}
/// <summary>
/// Format string is of the form
/// outDevice; type flag1+flag2+...;type flags; ...
/// where flags are a combination of trace markers
/// </summary>
/// <param name="config"></param>
public TraceCfgParser(string config)
{
if (String.IsNullOrEmpty(config))
{
return;
}
string [] parts = config.Split(new char [] { ';' }, StringSplitOptions.RemoveEmptyEntries)
.Select((str) => str.Trim())
.ToArray();
foreach (KeyValuePair <string, string []> filter in GetFilters(parts, 1).Reverse())
{
string typeName = filter.Key.TrimStart(new char[] { '!' });
bool bIsNotFilter = filter.Key.IndexOf('!') == 0;
KeyValuePair <Level, MessageTypes> levelAndMsgFilter = ParseMsgTypeFilter(filter.Value);
TraceFilter curFilterInstance = new TraceFilter(typeName,
levelAndMsgFilter.Value,
levelAndMsgFilter.Key,
bIsNotFilter ? NotFilters : Filters);
if (bIsNotFilter)
{
NotFilters = curFilterInstance;
}
else
{
Filters = curFilterInstance;
}
}
if (parts.Length > 0)
{
OpenOutputDevice(parts[0].ToLower());
}
// when only output device was configured or wrong mask was entere we enable full tracing
// by default
if (this.Filters == null)
{
this.Filters = new TraceFilterMatchAll();
}
if (bHasError == true)
{
InternalError.PrintHelp();
}
}
private void OpenOutputDevice(string outDevice)
{
string [] parts = outDevice.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
string deviceName = parts[0];
string deviceConfig = String.Join(" ", parts.Skip(1).ToArray());
switch (deviceName)
{
case "file":
if (deviceConfig == "")
{
deviceConfig = DefaultTraceFileBaseName;
}
OutDevice = new TextWriterTraceListener(CreateTraceFile(deviceConfig));
break;
case "debugoutput":
OutDevice = new DefaultTraceListener();
break;
case "console":
OutDevice = new ConsoleTraceListener();
break;
case "null":
OutDevice = new NullTraceListener();
break;
case "default":
UseAppConfigListeners = true;
OutDevice = new NullTraceListener();
break;
default:
InternalError.Print("The trace output device {0} is not supported.", outDevice);
bHasError = true;
break;
}
}
