/**
* news_parser_buffered_fill_cb:
* @object: (in): A #GBufferedInputStream.
* @result: (in): A #GAsyncResult.
* @user_data: (in): A #NewsParser.
*
* Completes an asynchronous request to fill the buffer of a
* #GBufferedInputStream. If the buffer was successfully filled, then
* the feed format will be discovered and the stream parsed.
*
* Returns: None.
*/
static void
news_parser_buffered_fill_cb (GObject *object,
GAsyncResult *result,
gpointer user_data)
{
GBufferedInputStream *buffered = (GBufferedInputStream *)object;
NewsParserPrivate *priv;
NewsParser *parser = user_data;
NewsFormat *format;
guint8 buffer[BUFFER_FILL_SIZE];
gsize length = 0;
GType format_type = G_TYPE_INVALID;
ENTRY;
g_assert(G_IS_BUFFERED_INPUT_STREAM(buffered));
g_assert(G_IS_ASYNC_RESULT(result));
g_assert(NEWS_IS_PARSER(parser));
priv = parser->priv;
length = g_buffered_input_stream_peek(buffered, buffer, 0, sizeof buffer);
if (length <= 0) {
g_simple_async_result_set_error(priv->simple, NEWS_PARSER_ERROR,
NEWS_PARSER_ERROR_NO_DATA,
_("No data was available to parse."));
g_simple_async_result_complete_in_idle(priv->simple);
} else {
format_type = news_parser_discover_format(parser, buffer, length);
if (format_type) {
format = g_object_new(format_type,
"adapter", priv->adapter,
"source", priv->source,
NULL);
news_format_read_async(format, G_INPUT_STREAM(buffered),
priv->cancellable,
news_parser_format_read_cb,
g_object_ref(parser));
g_object_unref(format);
} else {
g_simple_async_result_set_error(priv->simple, NEWS_PARSER_ERROR,
NEWS_PARSER_ERROR_NO_FORMAT,
_("Failed to discover format."));
g_simple_async_result_complete_in_idle(priv->simple);
#if 0
{
gchar *uri;
g_object_get(priv->source, "uri", &uri, NULL);
g_printerr("%s\n", uri);
g_free(uri);
}
#endif
}
}
g_object_unref(parser);
EXIT;
}
static VALUE
rg_peek(VALUE self, VALUE rboffset, VALUE rbcount)
{
gsize offset = RVAL2GSIZE(rboffset);
gsize count = RVAL2GSIZE(rbcount);
VALUE result = rb_str_new(NULL, count);
gsize bytes_peeked = g_buffered_input_stream_peek(_SELF(self),
RSTRING_PTR(result),
offset,
count);
rb_str_set_len(result, bytes_peeked);
rb_str_resize(result, bytes_peeked);
OBJ_TAINT(result);
return result;
}
