diff options
Diffstat (limited to 'src/playlist/RssPlaylistPlugin.cxx')
-rw-r--r-- | src/playlist/RssPlaylistPlugin.cxx | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/src/playlist/RssPlaylistPlugin.cxx b/src/playlist/RssPlaylistPlugin.cxx deleted file mode 100644 index e2a44bfd3..000000000 --- a/src/playlist/RssPlaylistPlugin.cxx +++ /dev/null @@ -1,284 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "RssPlaylistPlugin.hxx" -#include "PlaylistPlugin.hxx" -#include "MemorySongEnumerator.hxx" -#include "InputStream.hxx" -#include "Song.hxx" -#include "tag/Tag.hxx" -#include "util/ASCII.hxx" -#include "util/Error.hxx" -#include "util/Domain.hxx" -#include "Log.hxx" - -#include <glib.h> - -#include <assert.h> -#include <string.h> - -static constexpr Domain rss_domain("rss"); - -/** - * This is the state object for the GLib XML parser. - */ -struct RssParser { - /** - * The list of songs (in reverse order because that's faster - * while adding). - */ - std::forward_list<SongPointer> songs; - - /** - * The current position in the XML file. - */ - enum { - ROOT, ITEM, - } state; - - /** - * The current tag within the "entry" element. This is only - * valid if state==ITEM. TAG_NUM_OF_ITEM_TYPES means there - * is no (known) tag. - */ - TagType tag; - - /** - * The current song. It is allocated after the "location" - * element. - */ - Song *song; - - RssParser() - :state(ROOT) {} -}; - -static const gchar * -get_attribute(const gchar **attribute_names, const gchar **attribute_values, - const gchar *name) -{ - for (unsigned i = 0; attribute_names[i] != nullptr; ++i) - if (StringEqualsCaseASCII(attribute_names[i], name)) - return attribute_values[i]; - - return nullptr; -} - -static void -rss_start_element(gcc_unused GMarkupParseContext *context, - const gchar *element_name, - const gchar **attribute_names, - const gchar **attribute_values, - gpointer user_data, gcc_unused GError **error) -{ - RssParser *parser = (RssParser *)user_data; - - switch (parser->state) { - case RssParser::ROOT: - if (StringEqualsCaseASCII(element_name, "item")) { - parser->state = RssParser::ITEM; - parser->song = Song::NewRemote("rss:"); - parser->tag = TAG_NUM_OF_ITEM_TYPES; - } - - break; - - case RssParser::ITEM: - if (StringEqualsCaseASCII(element_name, "enclosure")) { - const gchar *href = get_attribute(attribute_names, - attribute_values, - "url"); - if (href != nullptr) { - /* create new song object, and copy - the existing tag over; we cannot - replace the existing song's URI, - because that attribute is - immutable */ - Song *song = Song::NewRemote(href); - - if (parser->song != nullptr) { - song->tag = parser->song->tag; - parser->song->tag = nullptr; - parser->song->Free(); - } - - parser->song = song; - } - } else if (StringEqualsCaseASCII(element_name, "title")) - parser->tag = TAG_TITLE; - else if (StringEqualsCaseASCII(element_name, "itunes:author")) - parser->tag = TAG_ARTIST; - - break; - } -} - -static void -rss_end_element(gcc_unused GMarkupParseContext *context, - const gchar *element_name, - gpointer user_data, gcc_unused GError **error) -{ - RssParser *parser = (RssParser *)user_data; - - switch (parser->state) { - case RssParser::ROOT: - break; - - case RssParser::ITEM: - if (StringEqualsCaseASCII(element_name, "item")) { - if (strcmp(parser->song->uri, "rss:") != 0) - parser->songs.emplace_front(parser->song); - else - parser->song->Free(); - - parser->state = RssParser::ROOT; - } else - parser->tag = TAG_NUM_OF_ITEM_TYPES; - - break; - } -} - -static void -rss_text(gcc_unused GMarkupParseContext *context, - const gchar *text, gsize text_len, - gpointer user_data, gcc_unused GError **error) -{ - RssParser *parser = (RssParser *)user_data; - - switch (parser->state) { - case RssParser::ROOT: - break; - - case RssParser::ITEM: - if (parser->tag != TAG_NUM_OF_ITEM_TYPES) { - if (parser->song->tag == nullptr) - parser->song->tag = new Tag(); - parser->song->tag->AddItem(parser->tag, - text, text_len); - } - - break; - } -} - -static const GMarkupParser rss_parser = { - rss_start_element, - rss_end_element, - rss_text, - nullptr, - nullptr, -}; - -static void -rss_parser_destroy(gpointer data) -{ - RssParser *parser = (RssParser *)data; - - if (parser->state >= RssParser::ITEM) - parser->song->Free(); -} - -/* - * The playlist object - * - */ - -static SongEnumerator * -rss_open_stream(InputStream &is) -{ - RssParser parser; - GMarkupParseContext *context; - char buffer[1024]; - size_t nbytes; - bool success; - Error error2; - GError *error = nullptr; - - /* parse the RSS XML file */ - - context = g_markup_parse_context_new(&rss_parser, - G_MARKUP_TREAT_CDATA_AS_TEXT, - &parser, rss_parser_destroy); - - while (true) { - nbytes = is.LockRead(buffer, sizeof(buffer), error2); - if (nbytes == 0) { - if (error2.IsDefined()) { - g_markup_parse_context_free(context); - LogError(error2); - return nullptr; - } - - break; - } - - success = g_markup_parse_context_parse(context, buffer, nbytes, - &error); - if (!success) { - FormatError(rss_domain, - "XML parser failed: %s", error->message); - g_error_free(error); - g_markup_parse_context_free(context); - return nullptr; - } - } - - success = g_markup_parse_context_end_parse(context, &error); - if (!success) { - FormatError(rss_domain, - "XML parser failed: %s", error->message); - g_error_free(error); - g_markup_parse_context_free(context); - return nullptr; - } - - parser.songs.reverse(); - MemorySongEnumerator *playlist = - new MemorySongEnumerator(std::move(parser.songs)); - - g_markup_parse_context_free(context); - - return playlist; -} - -static const char *const rss_suffixes[] = { - "rss", - nullptr -}; - -static const char *const rss_mime_types[] = { - "application/rss+xml", - "text/xml", - nullptr -}; - -const struct playlist_plugin rss_playlist_plugin = { - "rss", - - nullptr, - nullptr, - nullptr, - rss_open_stream, - - nullptr, - rss_suffixes, - rss_mime_types, -}; |