private static Stream OpenFile(CodeContext /*!*/ context, PlatformAdaptationLayer pal, string name, FileMode fileMode, FileAccess fileAccess, FileShare fileShare)
{
if (string.IsNullOrWhiteSpace(name))
{
throw PythonOps.OSError(2, "No such file or directory", filename: name);
}
try {
return(pal.OpenFileStream(name, fileMode, fileAccess, fileShare, 1)); // Use a 1 byte buffer size to disable buffering (if the FileStream implementation supports it).
} catch (UnauthorizedAccessException) {
throw PythonOps.OSError(13, "Permission denied", name);
} catch (FileNotFoundException) {
throw PythonOps.OSError(2, "No such file or directory", name);
} catch (IOException e) {
AddFilename(context, name, e);
throw;
}
}