spoon

set dwm status
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mpd.c (1662B)


      1 #include <err.h>
      2 #include <stdio.h>
      3 
      4 #include <mpd/client.h>
      5 
      6 #include "types.h"
      7 #include "util.h"
      8 
      9 char *anim[] = {
     10 	"!!.|.",
     11 	"|!.!.",
     12 	"!.!!.",
     13 	"!!|.!",
     14 	".!!|!",
     15 };
     16 
     17 int
     18 mpdread(void *arg, char *buf, size_t len)
     19 {
     20 	static struct mpd_connection *conn;
     21 	struct mpd_status *status;
     22 	enum mpd_state state;
     23 	struct mpd_song *song;
     24 	const char *artist, *title;
     25 	struct mpdarg *mpdarg = arg;
     26 	static int frame = 0;
     27 
     28 #define CHECK_CONNECTION(conn) \
     29 	if (mpd_connection_get_error(conn) != MPD_ERROR_SUCCESS) { \
     30 		warnx("mpd_connection_get_error: %s", \
     31 		      mpd_connection_get_error_message(conn)); \
     32 		goto out; \
     33 	}
     34 
     35 	if (conn == NULL) {
     36 		conn = mpd_connection_new(mpdarg->host, mpdarg->port, 0);
     37 		if (conn == NULL)
     38 			return -1;
     39 		CHECK_CONNECTION(conn);
     40 	}
     41 	mpd_send_status(conn);
     42 	status = mpd_recv_status(conn);
     43 	if (status == NULL) {
     44 		CHECK_CONNECTION(conn);
     45 		mpd_response_finish(conn);
     46 		return -1;
     47 	}
     48 	state = mpd_status_get_state(status);
     49 	mpd_status_free(status);
     50 	mpd_response_finish(conn);
     51 	if (state != MPD_STATE_PLAY && state != MPD_STATE_PAUSE)
     52 		return -1;
     53 	mpd_send_current_song(conn);
     54 	song = mpd_recv_song(conn);
     55 	if (song == NULL) {
     56 		CHECK_CONNECTION(conn);
     57 		mpd_response_finish(conn);
     58 		return -1;
     59 	}
     60 	artist = mpd_song_get_tag(song, MPD_TAG_ARTIST, 0);
     61 	title = mpd_song_get_tag(song, MPD_TAG_TITLE, 0);
     62 	if (artist != NULL && title != NULL) {
     63 		snprintf(buf, len, "%s - %s", artist, title);
     64 	} else if (title != NULL) {
     65 		strlcpy(buf, title, len);
     66 	} else {
     67 		strlcpy(buf, anim[frame++ % LEN(anim)], len);
     68 	}
     69 	mpd_song_free(song);
     70 	mpd_response_finish(conn);
     71 	return 0;
     72 out:
     73 	mpd_connection_free(conn);
     74 	conn = NULL;
     75 	return -1;
     76 }