@SuppressWarnings("unchecked")
private void internalRead(
InputStream buffer, List<NavigationFormat> formats, ParserContext context)
throws IOException {
int routeCountBefore = context.getRoutes().size();
NavigationFormat firstSuccessfulFormat = null;
try {
for (NavigationFormat<BaseRoute> format : formats) {
notifyReading(format);
log.fine(format("Trying to read with %s", format));
try {
format.read(buffer, context);
// if no route has been read, take the first that didn't throw an exception
if (firstSuccessfulFormat == null) firstSuccessfulFormat = format;
} catch (Exception e) {
log.severe(format("Error reading with %s: %s, %s", format, e.getClass(), e));
}
if (context.getRoutes().size() > routeCountBefore) {
context.addFormat(format);
break;
}
try {
buffer.reset();
} catch (IOException e) {
log.severe("Cannot reset() stream to mark()");
break;
}
}
} finally {
//noinspection ThrowFromFinallyBlock
buffer.close();
}
if (context.getRoutes().size() == 0 && firstSuccessfulFormat != null)
context.addFormat(firstSuccessfulFormat);
}
