int mpd_put_current_song(char *buffer)
{
char *cur = buffer;
const char *end = buffer + MAX_SIZE;
struct mpd_song *song;
song = mpd_run_current_song(mpd.conn);
if(song == NULL)
return 0;
cur += json_emit_raw_str(cur, end - cur, "{\"type\": \"song_change\", \"data\":{\"pos\":");
cur += json_emit_int(cur, end - cur, mpd_song_get_pos(song));
cur += json_emit_raw_str(cur, end - cur, ",\"title\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_get_title(song));
if(mpd_song_get_tag(song, MPD_TAG_ARTIST, 0) != NULL)
{
cur += json_emit_raw_str(cur, end - cur, ",\"artist\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_song_get_tag(song, MPD_TAG_ARTIST, 0));
}
if(mpd_song_get_tag(song, MPD_TAG_ALBUM, 0) != NULL)
{
cur += json_emit_raw_str(cur, end - cur, ",\"album\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_song_get_tag(song, MPD_TAG_ALBUM, 0));
}
cur += json_emit_raw_str(cur, end - cur, "}}");
mpd_song_free(song);
mpd_response_finish(mpd.conn);
return cur - buffer;
}
int mpd_put_queue(char *buffer, unsigned int offset)
{
char *cur = buffer;
const char *end = buffer + MAX_SIZE;
struct mpd_entity *entity;
if (!mpd_send_list_queue_range_meta(mpd.conn, offset, offset+MAX_ELEMENTS_PER_PAGE))
RETURN_ERROR_AND_RECOVER("mpd_send_list_queue_meta");
cur += json_emit_raw_str(cur, end - cur, "{\"type\":\"queue\",\"data\":[ ");
while((entity = mpd_recv_entity(mpd.conn)) != NULL) {
const struct mpd_song *song;
if(mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_SONG) {
song = mpd_entity_get_song(entity);
cur += json_emit_raw_str(cur, end - cur, "{\"id\":");
cur += json_emit_int(cur, end - cur, mpd_song_get_id(song));
cur += json_emit_raw_str(cur, end - cur, ",\"pos\":");
cur += json_emit_int(cur, end - cur, mpd_song_get_pos(song));
cur += json_emit_raw_str(cur, end - cur, ",\"duration\":");
cur += json_emit_int(cur, end - cur, mpd_song_get_duration(song));
cur += json_emit_raw_str(cur, end - cur, ",\"artist\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_get_artist(song));
cur += json_emit_raw_str(cur, end - cur, ",\"album\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_get_album(song));
cur += json_emit_raw_str(cur, end - cur, ",\"title\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_get_title(song));
cur += json_emit_raw_str(cur, end - cur, "},");
}
mpd_entity_free(entity);
}
/* remove last ',' */
cur--;
cur += json_emit_raw_str(cur, end - cur, "]}");
return cur - buffer;
}
int mpd_search(char *buffer, char *searchstr)
{
int i = 0;
char *cur = buffer;
const char *end = buffer + MAX_SIZE;
struct mpd_song *song;
if(mpd_search_db_songs(mpd.conn, false) == false)
RETURN_ERROR_AND_RECOVER("mpd_search_db_songs");
else if(mpd_search_add_any_tag_constraint(mpd.conn, MPD_OPERATOR_DEFAULT, searchstr) == false)
RETURN_ERROR_AND_RECOVER("mpd_search_add_any_tag_constraint");
else if(mpd_search_commit(mpd.conn) == false)
RETURN_ERROR_AND_RECOVER("mpd_search_commit");
else {
cur += json_emit_raw_str(cur, end - cur, "{\"type\":\"search\",\"data\":[ ");
while((song = mpd_recv_song(mpd.conn)) != NULL) {
cur += json_emit_raw_str(cur, end - cur, "{\"type\":\"song\",\"uri\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_song_get_uri(song));
cur += json_emit_raw_str(cur, end - cur, ",\"album\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_get_album(song));
cur += json_emit_raw_str(cur, end - cur, ",\"artist\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_get_artist(song));
cur += json_emit_raw_str(cur, end - cur, ",\"duration\":");
cur += json_emit_int(cur, end - cur, mpd_song_get_duration(song));
cur += json_emit_raw_str(cur, end - cur, ",\"title\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_get_title(song));
cur += json_emit_raw_str(cur, end - cur, "},");
mpd_song_free(song);
/* Maximum results */
if(i++ >= 300)
{
cur += json_emit_raw_str(cur, end - cur, "{\"type\":\"wrap\"},");
break;
}
}
/* remove last ',' */
cur--;
cur += json_emit_raw_str(cur, end - cur, "]}");
}
return cur - buffer;
}
static const char *test_emit(void) {
char buf[1000], *p = buf;
const char *s5 = "{\"foo\":[-123,1.23,true]}";
p += json_emit_raw_str(p, &buf[sizeof(buf)] - p, "{");
p += json_emit_quoted_str(p, &buf[sizeof(buf)] - p, "foo");
p += json_emit_raw_str(p, &buf[sizeof(buf)] - p, ":[");
p += json_emit_int(p, &buf[sizeof(buf)] - p, -123);
p += json_emit_raw_str(p, &buf[sizeof(buf)] - p, ",");
p += json_emit_double(p, &buf[sizeof(buf)] - p, 1.23);
p += json_emit_raw_str(p, &buf[sizeof(buf)] - p, ",");
p += json_emit_raw_str(p, &buf[sizeof(buf)] - p, "true");
p += json_emit_raw_str(p, &buf[sizeof(buf)] - p, "]}");
ASSERT(strcmp(buf, s5) == 0);
ASSERT(p < &buf[sizeof(buf)]);
return NULL;
}
int mpd_put_browse(char *buffer, char *path, unsigned int offset)
{
char *cur = buffer;
const char *end = buffer + MAX_SIZE;
struct mpd_entity *entity;
unsigned int entity_count = 0;
if (!mpd_send_list_meta(mpd.conn, path))
RETURN_ERROR_AND_RECOVER("mpd_send_list_meta");
cur += json_emit_raw_str(cur, end - cur, "{\"type\":\"browse\",\"data\":[ ");
while((entity = mpd_recv_entity(mpd.conn)) != NULL) {
const struct mpd_song *song;
const struct mpd_directory *dir;
const struct mpd_playlist *pl;
if(offset > entity_count)
{
mpd_entity_free(entity);
entity_count++;
continue;
}
else if(offset + MAX_ELEMENTS_PER_PAGE - 1 < entity_count)
{
mpd_entity_free(entity);
cur += json_emit_raw_str(cur, end - cur, "{\"type\":\"wrap\",\"count\":");
cur += json_emit_int(cur, end - cur, entity_count);
cur += json_emit_raw_str(cur, end - cur, "} ");
break;
}
switch (mpd_entity_get_type(entity)) {
case MPD_ENTITY_TYPE_UNKNOWN:
break;
case MPD_ENTITY_TYPE_SONG:
song = mpd_entity_get_song(entity);
cur += json_emit_raw_str(cur, end - cur, "{\"type\":\"song\",\"uri\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_song_get_uri(song));
cur += json_emit_raw_str(cur, end - cur, ",\"duration\":");
cur += json_emit_int(cur, end - cur, mpd_song_get_duration(song));
cur += json_emit_raw_str(cur, end - cur, ",\"title\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_get_title(song));
cur += json_emit_raw_str(cur, end - cur, "},");
break;
case MPD_ENTITY_TYPE_DIRECTORY:
dir = mpd_entity_get_directory(entity);
cur += json_emit_raw_str(cur, end - cur, "{\"type\":\"directory\",\"dir\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_directory_get_path(dir));
cur += json_emit_raw_str(cur, end - cur, "},");
break;
case MPD_ENTITY_TYPE_PLAYLIST:
pl = mpd_entity_get_playlist(entity);
cur += json_emit_raw_str(cur, end - cur, "{\"type\":\"playlist\",\"plist\":");
cur += json_emit_quoted_str(cur, end - cur, mpd_playlist_get_path(pl));
cur += json_emit_raw_str(cur, end - cur, "},");
break;
}
mpd_entity_free(entity);
entity_count++;
}
if (mpd_connection_get_error(mpd.conn) != MPD_ERROR_SUCCESS || !mpd_response_finish(mpd.conn)) {
fprintf(stderr, "MPD mpd_send_list_meta: %s\n", mpd_connection_get_error_message(mpd.conn));
mpd.conn_state = MPD_FAILURE;
return 0;
}
/* remove last ',' */
cur--;
cur += json_emit_raw_str(cur, end - cur, "]}");
return cur - buffer;
}