bool Downloader::ParseRSS(xmlDocPtr doc) {
xmlXPathContextPtr xp_ctx = xmlXPathNewContext(doc);
xmlXPathObjectPtr xpath_obj = xmlXPathEvalExpression(BAD_CAST "/rss/channel/item", xp_ctx);
bool ok = false;
if (xpath_obj->nodesetval) {
wxDateTime time;
wxString md5;
wxString version;
wxString url;
for (int i = 0; i < xpath_obj->nodesetval->nodeNr; i++) {
wxDateTime itime;
if (parse_rss_item(xpath_obj->nodesetval->nodeTab[i], url, version, md5, itime)
&& (!time.IsValid() || itime > time)) {
m_url = url;
m_version = version;
m_md5 = md5;
time = itime;
ok = true;
}
}
}
xmlXPathFreeObject(xpath_obj);
xmlXPathFreeContext(xp_ctx);
return ok;
}
static TotemPlParserResult
parse_rss_items (TotemPlParser *parser, const char *uri, xml_node_t *parent)
{
const char *title, *language, *description, *author;
const char *contact, *img, *pub_date, *copyright;
xml_node_t *node;
title = language = description = author = NULL;
contact = img = pub_date = copyright = NULL;
/* We need to parse for the feed metadata first, then for the items */
for (node = parent->child; node != NULL; node = node->next) {
if (node->name == NULL)
continue;
if (g_ascii_strcasecmp (node->name, "title") == 0) {
title = node->data;
} else if (g_ascii_strcasecmp (node->name, "language") == 0) {
language = node->data;
} else if (g_ascii_strcasecmp (node->name, "description") == 0
|| g_ascii_strcasecmp (node->name, "itunes:subtitle") == 0) {
description = node->data;
} else if (g_ascii_strcasecmp (node->name, "author") == 0
|| g_ascii_strcasecmp (node->name, "itunes:author") == 0
|| (g_ascii_strcasecmp (node->name, "generator") == 0 && author == NULL)) {
author = node->data;
} else if (g_ascii_strcasecmp (node->name, "webMaster") == 0) {
contact = node->data;
} else if (g_ascii_strcasecmp (node->name, "image") == 0) {
img = node->data;
} else if (g_ascii_strcasecmp (node->name, "itunes:image") == 0) {
const char *href;
href = xml_parser_get_property (node, "href");
if (href != NULL)
img = href;
} else if (g_ascii_strcasecmp (node->name, "lastBuildDate") == 0
|| g_ascii_strcasecmp (node->name, "pubDate") == 0) {
pub_date = node->data;
} else if (g_ascii_strcasecmp (node->name, "copyright") == 0) {
copyright = node->data;
}
}
/* Send the info we already have about the feed */
totem_pl_parser_add_uri (parser,
TOTEM_PL_PARSER_FIELD_IS_PLAYLIST, TRUE,
TOTEM_PL_PARSER_FIELD_URI, uri,
TOTEM_PL_PARSER_FIELD_TITLE, title,
TOTEM_PL_PARSER_FIELD_LANGUAGE, language,
TOTEM_PL_PARSER_FIELD_DESCRIPTION, description,
TOTEM_PL_PARSER_FIELD_AUTHOR, author,
TOTEM_PL_PARSER_FIELD_PUB_DATE, pub_date,
TOTEM_PL_PARSER_FIELD_COPYRIGHT, copyright,
TOTEM_PL_PARSER_FIELD_IMAGE_URI, img,
TOTEM_PL_PARSER_FIELD_CONTACT, contact,
NULL);
for (node = parent->child; node != NULL; node = node->next) {
if (node->name == NULL)
continue;
if (g_ascii_strcasecmp (node->name, "item") == 0)
parse_rss_item (parser, node);
}
totem_pl_parser_playlist_end (parser, uri);
return TOTEM_PL_PARSER_RESULT_SUCCESS;
}
static GList*
feed_rss_handler_parse (FeedHandler *self, GrssFeedChannel *feed, xmlDocPtr doc, gboolean do_items, GError **error)
{
gchar *tmp;
gboolean rdf;
time_t now;
GList *items;
xmlNodePtr cur;
GrssFeedItem *item;
FeedRssHandler *parser;
items = NULL;
rdf = FALSE;
now = time (NULL);
parser = FEED_RSS_HANDLER (self);
cur = xmlDocGetRootElement (doc);
while (cur && xmlIsBlankNode (cur))
cur = cur->next;
if (!xmlStrcmp (cur->name, BAD_CAST"rss")) {
cur = cur->xmlChildrenNode;
rdf = FALSE;
}
else if (!xmlStrcmp (cur->name, BAD_CAST"rdf") ||
!xmlStrcmp (cur->name, BAD_CAST"RDF")) {
cur = cur->xmlChildrenNode;
rdf = TRUE;
}
else if (!xmlStrcmp (cur->name, BAD_CAST"Channel")) {
rdf = FALSE;
}
else {
g_set_error (error, FEED_RSS_HANDLER_ERROR, FEED_RSS_HANDLER_PARSE_ERROR, "Could not find RDF/RSS header!");
return NULL;
}
while (cur && xmlIsBlankNode (cur))
cur = cur->next;
while (cur) {
if (!cur->name) {
g_warning ("invalid XML: parser returns NULL value -> tag ignored!");
cur = cur->next;
continue;
}
if ((!xmlStrcmp (cur->name, BAD_CAST"channel")) ||
(!xmlStrcmp (cur->name, BAD_CAST"Channel"))) {
parse_channel (parser, feed, doc, cur);
if (rdf == FALSE)
cur = cur->xmlChildrenNode;
break;
}
cur = cur->next;
}
/* For RDF (rss 0.9 or 1.0), cur now points to the item after the channel tag. */
/* For RSS, cur now points to the first item inside of the channel tag */
/* This ends up being the thing with the items, (and images/textinputs for RDF) */
/* parse channel contents */
while (cur) {
if (cur->type != XML_ELEMENT_NODE || NULL == cur->name) {
cur = cur->next;
continue;
}
/* save link to channel image */
if ((!xmlStrcmp (cur->name, BAD_CAST"image"))) {
if (NULL != (tmp = parse_image (cur))) {
grss_feed_channel_set_image (feed, tmp);
g_free (tmp);
}
}
else if (do_items == TRUE && (!xmlStrcmp (cur->name, BAD_CAST"items"))) { /* RSS 1.1 */
xmlNodePtr iter = cur->xmlChildrenNode;
while (iter) {
item = parse_rss_item (parser, feed, doc, iter);
if (item != NULL) {
if (grss_feed_item_get_publish_time (item) == 0)
grss_feed_item_set_publish_time (item, now);
items = g_list_append (items, item);
}
iter = iter->next;
}
}
else if (do_items == TRUE && (!xmlStrcmp (cur->name, BAD_CAST"item"))) { /* RSS 1.0, 2.0 */
item = parse_rss_item (parser, feed, doc, cur);
if (item != NULL) {
if (grss_feed_item_get_publish_time (item) == 0)
grss_feed_item_set_publish_time (item, now);
items = g_list_append (items, item);
}
}
cur = cur->next;
}
grss_feed_channel_set_format (feed, "application/rss+xml");
if (items != NULL)
items = g_list_reverse (items);
return items;
}
