internal static SourceUnit TryFindSourceFile(PythonContext /*!*/ context, string /*!*/ name)
{
PythonList paths;
if (!context.TryGetSystemPath(out paths))
{
return(null);
}
foreach (object dirObj in paths)
{
string directory = dirObj as string;
if (directory == null)
{
continue; // skip invalid entries
}
string candidatePath = null;
LanguageContext candidateLanguage = null;
foreach (string extension in context.DomainManager.Configuration.GetFileExtensions())
{
string fullPath;
try {
fullPath = context.DomainManager.Platform.CombinePaths(directory, name + extension);
} catch (ArgumentException) {
// skip invalid paths
continue;
}
if (context.DomainManager.Platform.FileExists(fullPath))
{
if (candidatePath != null)
{
throw PythonOps.ImportError(String.Format("Found multiple modules of the same name '{0}': '{1}' and '{2}'",
name, candidatePath, fullPath));
}
candidatePath = fullPath;
candidateLanguage = context.DomainManager.GetLanguageByExtension(extension);
}
}
if (candidatePath != null)
{
return(candidateLanguage.CreateFileUnit(candidatePath));
}
}
return(null);
}