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#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <regex.h>
#include <mpd/client.h>
#define MPDHOST "localhost"
#define MPDPORT 6600
struct mpd_connection *get_conn()
{
struct mpd_connection *conn;
conn = mpd_connection_new(MPDHOST, MPDPORT, 1000);
if (mpd_connection_get_error(conn) != MPD_ERROR_SUCCESS) {
fprintf(stderr, "Could not connect to mpd: %s\n", mpd_connection_get_error_message(conn));
mpd_connection_free(conn);
return NULL;
}
return conn;
}
void mpdchange(const Arg *direction)
{
struct mpd_connection *conn;
conn = get_conn();
if (conn == NULL) {
return;
}
if (direction->i > 0) {
mpd_run_next(conn);
}
else {
mpd_run_previous(conn);
}
mpd_connection_free(conn);
}
char *get_regerror(int errcode, regex_t *compiled)
{
size_t length = regerror(errcode, compiled, NULL, 0);
char *buffer = malloc(length);
(void) regerror(errcode, compiled, buffer, length);
return buffer;
}
void mpdcontrol()
{
struct mpd_connection *conn;
struct mpd_status *status;
struct mpd_song *song;
enum mpd_state state;
const char *filename;
regex_t expr;
conn = get_conn();
if (conn == NULL) {
return;
}
status = mpd_run_status(conn);
if (status == NULL) {
fprintf(stderr, "Could not get mpd status: %s\n", mpd_status_get_error(status));
mpd_status_free(status);
mpd_connection_free(conn);
return;
}
state = mpd_status_get_state(status);
if (state == MPD_STATE_STOP || state == MPD_STATE_PAUSE) {
mpd_run_play(conn);
mpd_status_free(status);
mpd_connection_free(conn);
}
else if (state != MPD_STATE_UNKNOWN) { //playing some music
song = mpd_run_current_song(conn);
if (song == NULL){
fprintf(stderr, "Error fetching current song!\n");
mpd_song_free(song);
mpd_status_free(status);
mpd_connection_free(conn);
return;
}
filename = mpd_song_get_uri(song);
int errcode = regcomp(&expr, "^[[:alnum:]]+://", REG_EXTENDED|REG_NOSUB);
if (errcode != 0) {
char *err = get_regerror(errcode, &expr);
fprintf(stderr, "Could not compile regexp: %s\n", err);
mpd_song_free(song);
mpd_status_free(status);
mpd_connection_free(conn);
free(err);
regfree(&expr);
return;
}
int matchcode = regexec(&expr, filename, 0, NULL, 0);
if (matchcode == 0) {
if (strstr(filename, "file://") == filename) { //match just at the start of the filename
//this means that mpd is playing a file outside the music_dir,
//but on disk, so we can safely pause
mpd_run_toggle_pause(conn);
}
else {
mpd_run_stop(conn);
}
}
else if (matchcode == REG_NOMATCH) {
mpd_run_toggle_pause(conn);
}
else {
char *err = get_regerror(matchcode, &expr);
fprintf(stderr, "Error while matching regexp: %s\n", err);
free(err);
}
regfree(&expr);
mpd_song_free(song);
mpd_status_free(status);
mpd_connection_free(conn);
}
}
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