internal IEnumerable <string> GetLookupDirectoryPaths()
{
LookupPathCollection lookupPathCollection = new LookupPathCollection();
string environmentVariable = Environment.GetEnvironmentVariable("PATH");
CommandDiscovery.discoveryTracer.WriteLine("PATH: {0}", (object)environmentVariable);
if (environmentVariable == null || !string.Equals(this.pathCacheKey, environmentVariable, StringComparison.OrdinalIgnoreCase) || this.cachedPath == null)
{
this.cachedLookupPaths = (LookupPathCollection)null;
this.pathCacheKey = environmentVariable;
if (this.pathCacheKey != null)
{
string[] strArray = this.pathCacheKey.Split(new char[1]
{
';'
}, StringSplitOptions.RemoveEmptyEntries);
if (strArray != null)
{
this.cachedPath = new Collection <string>();
foreach (string str1 in strArray)
{
string str2 = str1.TrimStart();
this.cachedPath.Add(str2);
lookupPathCollection.Add(str2);
}
}
}
}
else
{
lookupPathCollection.AddRange((ICollection <string>) this.cachedPath);
}
if (this.cachedLookupPaths == null)
{
this.cachedLookupPaths = lookupPathCollection;
}
return((IEnumerable <string>) this.cachedLookupPaths);
}
