rss_file *rss_open_file(const char *filename)
{
xmlParserCtxtPtr ctxt;
xmlDocPtr doc;
rss_file *f;
xmlNode *root_element = NULL;
gchar *fetched_time;
ctxt = xmlNewParserCtxt();
ctxt->sax->getEntity = _get_entity;
doc = xmlSAXParseFile(ctxt->sax, filename, 0);
if (!doc) {
fprintf(stderr, "Error parsing RSS file %s.\n", filename);
xmlFreeParserCtxt(ctxt);
return NULL;
}
root_element = xmlDocGetRootElement(doc);
if (!root_element) {
xmlFreeDoc(doc);
xmlFreeParserCtxt(ctxt);
fprintf(stderr, "Error parsing RSS file %s.\n", filename);
return NULL;
}
/* Establish the time the RSS file was 'fetched'. */
fetched_time = get_rfc822_time();
if (!fetched_time) {
xmlFreeDoc(doc);
xmlFreeParserCtxt(ctxt);
g_fprintf(stderr, "Error retrieving current time.\n");
return NULL;
}
f = rss_parse(filename, root_element, fetched_time);
xmlFreeDoc(doc);
xmlFreeParserCtxt(ctxt);
g_free(fetched_time);
return f;
}
static void _enclosure_iterator(const void *user_data, int i, const xmlNode *node)
{
const char *downloadtime;
channel *c = (channel *)user_data;
downloadtime = libxmlutil_attr_as_string(node, "downloadtime");
if (downloadtime)
downloadtime = g_strdup(downloadtime);
else
downloadtime = get_rfc822_time();
g_hash_table_insert(c->downloaded_enclosures,
(gpointer)libxmlutil_attr_as_string(node, "url"),
(gpointer)downloadtime);
}
int channel_update(channel *c, void *user_data, channel_callback cb,
int no_download, int no_mark_read, int first_only,
int resume, enclosure_filter *filter, int debug,
int show_progress_bar)
{
int i, download_failed;
rss_file *f;
/* Retrieve the RSS file. */
f = _get_rss(c, user_data, cb, debug);
if (!f)
return 1;
/* Check enclosures in RSS file. */
for (i = 0; i < f->num_items; i++)
if (f->items[i]->enclosure) {
if (!g_hash_table_lookup_extended(c->downloaded_enclosures, f->items[i]->enclosure->url, NULL, NULL)) {
rss_item *item;
item = f->items[i];
if (!filter || _enclosure_pattern_match(filter, item->enclosure)) {
if (no_download)
download_failed = _do_catchup(c, &(f->channel_info), item, user_data, cb);
else
download_failed = _do_download(c, &(f->channel_info), item, user_data, cb, resume, debug, show_progress_bar);
if (download_failed)
break;
if (!no_mark_read) {
/* Mark enclosure as downloaded and immediately save channel
file to ensure that it reflects the change. */
g_hash_table_insert(c->downloaded_enclosures, f->items[i]->enclosure->url,
(gpointer)get_rfc822_time());
_cast_channel_save(c, debug);
}
/* If we have been instructed to deal only with the first
available enclosure, it is time to break out of the loop. */
if (first_only)
break;
}
}
}
if (!no_mark_read) {
/* Update the RSS last fetched time and save the channel file again. */
if (c->rss_last_fetched)
g_free(c->rss_last_fetched);
c->rss_last_fetched = g_strdup(f->fetched_time);
_cast_channel_save(c, debug);
}
rss_close(f);
return 0;
}
