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authorMax Kellermann <max@duempel.org>2008-09-07 13:39:31 +0200
committerMax Kellermann <max@duempel.org>2008-09-07 13:39:31 +0200
commit8d2830b3f9ab52e1b2dd54d82ae3aaf39e61abe8 (patch)
tree84f58989cf38f05cd9d55f4bc55bd1ce916d4958 /src/playlist.c
parent20feb0cbbab3c1516f0309a87c3d27f9801c7938 (diff)
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playlist: don't pass "fd" to playlist.c functions
The playlist library shouldn't talk to the client if possible. Introduce the "enum playlist_result" type which the caller (i.e. command.c) may use to generate an error message.
Diffstat (limited to '')
-rw-r--r--src/playlist.c221
1 files changed, 90 insertions, 131 deletions
diff --git a/src/playlist.c b/src/playlist.c
index 193989bdb..e8257a154 100644
--- a/src/playlist.c
+++ b/src/playlist.c
@@ -274,18 +274,16 @@ static void loadPlaylistFromStateFile(FILE *fp, char *buffer,
song = atoi(temp);
if (!(temp = strtok(NULL, "")))
state_file_fatal();
- if (!addToPlaylist(STDERR_FILENO, temp, NULL)
+ if (addToPlaylist(temp, NULL) == PLAYLIST_RESULT_SUCCESS
&& current == song) {
if (state != PLAYER_STATE_STOP) {
- playPlaylist(STDERR_FILENO,
- playlist.length - 1, 0);
+ playPlaylist(playlist.length - 1, 0);
}
if (state == PLAYER_STATE_PAUSE) {
playerPause();
}
if (state != PLAYER_STATE_STOP) {
- seekSongInPlaylist(STDERR_FILENO,
- playlist.length - 1,
+ seekSongInPlaylist(playlist.length - 1,
seek_time);
}
}
@@ -408,7 +406,7 @@ int playlistChangesPosId(int fd, mpd_uint32 version)
return 0;
}
-int playlistInfo(int fd, int song)
+enum playlist_result playlistInfo(int fd, int song)
{
int i;
int begin = 0;
@@ -418,36 +416,31 @@ int playlistInfo(int fd, int song)
begin = song;
end = song + 1;
}
- if (song >= playlist.length) {
- commandError(fd, ACK_ERROR_NO_EXIST,
- "song doesn't exist: \"%i\"", song);
- return -1;
- }
+ if (song >= playlist.length)
+ return PLAYLIST_RESULT_BAD_RANGE;
for (i = begin; i < end; i++)
printPlaylistSongInfo(fd, i);
- return 0;
+ return PLAYLIST_RESULT_SUCCESS;
}
-# define checkSongId(id) { \
- if(id < 0 || id >= PLAYLIST_HASH_MULT*playlist_max_length || \
- playlist.idToPosition[id] == -1 ) \
- { \
- commandError(fd, ACK_ERROR_NO_EXIST, \
- "song id doesn't exist: \"%i\"", id); \
- return -1; \
- } \
+static int song_id_exists(int id)
+{
+ return id >= 0 && id < PLAYLIST_HASH_MULT*playlist_max_length &&
+ playlist.idToPosition[id] != -1;
}
-int playlistId(int fd, int id)
+enum playlist_result playlistId(int fd, int id)
{
int i;
int begin = 0;
int end = playlist.length;
if (id >= 0) {
- checkSongId(id);
+ if (!song_id_exists(id))
+ return PLAYLIST_RESULT_NO_SUCH_SONG;
+
begin = playlist.idToPosition[id];
end = begin + 1;
}
@@ -455,7 +448,7 @@ int playlistId(int fd, int id)
for (i = begin; i < end; i++)
printPlaylistSongInfo(fd, i);
- return 0;
+ return PLAYLIST_RESULT_SUCCESS;
}
static void swapSongs(int song1, int song2)
@@ -560,7 +553,7 @@ static void clearPlayerQueue(void)
playerQueueUnlock();
}
-int addToPlaylist(int fd, const char *url, int *added_id)
+enum playlist_result addToPlaylist(const char *url, int *added_id)
{
Song *song;
@@ -569,13 +562,10 @@ int addToPlaylist(int fd, const char *url, int *added_id)
if ((song = getSongFromDB(url))) {
} else if (!(isValidRemoteUtf8Url(url) &&
(song = newSong(url, SONG_TYPE_URL, NULL)))) {
- commandError(fd, ACK_ERROR_NO_EXIST,
- "\"%s\" is not in the music db or is "
- "not a valid url", url);
- return -1;
+ return PLAYLIST_RESULT_NO_SUCH_SONG;
}
- return addSongToPlaylist(fd, song, added_id);
+ return addSongToPlaylist(song, added_id);
}
int addToStoredPlaylist(int fd, const char *url, const char *utf8file)
@@ -606,15 +596,12 @@ fail:
return -1;
}
-int addSongToPlaylist(int fd, Song * song, int *added_id)
+enum playlist_result addSongToPlaylist(Song * song, int *added_id)
{
int id;
- if (playlist.length == playlist_max_length) {
- commandError(fd, ACK_ERROR_PLAYLIST_MAX,
- "playlist is at the max size");
- return -1;
- }
+ if (playlist.length == playlist_max_length)
+ return PLAYLIST_RESULT_TOO_LARGE;
if (playlist_state == PLAYLIST_STATE_PLAY) {
if (playlist.queued >= 0
@@ -652,24 +639,17 @@ int addSongToPlaylist(int fd, Song * song, int *added_id)
if (added_id)
*added_id = id;
- return 0;
+ return PLAYLIST_RESULT_SUCCESS;
}
-int swapSongsInPlaylist(int fd, int song1, int song2)
+enum playlist_result swapSongsInPlaylist(int song1, int song2)
{
int queuedSong = -1;
int currentSong;
- if (song1 < 0 || song1 >= playlist.length) {
- commandError(fd, ACK_ERROR_NO_EXIST,
- "song doesn't exist: \"%i\"", song1);
- return -1;
- }
- if (song2 < 0 || song2 >= playlist.length) {
- commandError(fd, ACK_ERROR_NO_EXIST,
- "song doesn't exist: \"%i\"", song2);
- return -1;
- }
+ if (song1 < 0 || song1 >= playlist.length ||
+ song2 < 0 || song2 >= playlist.length)
+ return PLAYLIST_RESULT_BAD_RANGE;
if (playlist_state == PLAYLIST_STATE_PLAY) {
if (playlist.queued >= 0) {
@@ -705,15 +685,15 @@ int swapSongsInPlaylist(int fd, int song1, int song2)
incrPlaylistVersion();
- return 0;
+ return PLAYLIST_RESULT_SUCCESS;
}
-int swapSongsInPlaylistById(int fd, int id1, int id2)
+enum playlist_result swapSongsInPlaylistById(int id1, int id2)
{
- checkSongId(id1);
- checkSongId(id2);
+ if (!song_id_exists(id1) || !song_id_exists(id2))
+ return PLAYLIST_RESULT_NO_SUCH_SONG;
- return swapSongsInPlaylist(fd, playlist.idToPosition[id1],
+ return swapSongsInPlaylist(playlist.idToPosition[id1],
playlist.idToPosition[id2]);
}
@@ -724,16 +704,13 @@ int swapSongsInPlaylistById(int fd, int id1, int id2)
playlist.songMod[to] = playlist.version; \
}
-int deleteFromPlaylist(int fd, int song)
+enum playlist_result deleteFromPlaylist(int song)
{
int i;
int songOrder;
- if (song < 0 || song >= playlist.length) {
- commandError(fd, ACK_ERROR_NO_EXIST,
- "song doesn't exist: \"%i\"", song);
- return -1;
- }
+ if (song < 0 || song >= playlist.length)
+ return PLAYLIST_RESULT_BAD_RANGE;
if (playlist_state == PLAYLIST_STATE_PLAY) {
if (playlist.queued >= 0
@@ -790,14 +767,15 @@ int deleteFromPlaylist(int fd, int song)
playlist.queued--;
}
- return 0;
+ return PLAYLIST_RESULT_SUCCESS;
}
-int deleteFromPlaylistById(int fd, int id)
+enum playlist_result deleteFromPlaylistById(int id)
{
- checkSongId(id);
+ if (!song_id_exists(id))
+ return PLAYLIST_RESULT_NO_SUCH_SONG;
- return deleteFromPlaylist(fd, playlist.idToPosition[id]);
+ return deleteFromPlaylist(playlist.idToPosition[id]);
}
void deleteASongFromPlaylist(Song * song)
@@ -809,7 +787,7 @@ void deleteASongFromPlaylist(Song * song)
for (i = 0; i < playlist.length; i++) {
if (song == playlist.songs[i]) {
- deleteFromPlaylist(STDERR_FILENO, i);
+ deleteFromPlaylist(i);
}
}
}
@@ -841,7 +819,7 @@ static void playPlaylistOrderNumber(int orderNum)
playlist.current = orderNum;
}
-int playPlaylist(int fd, int song, int stopOnError)
+enum playlist_result playPlaylist(int song, int stopOnError)
{
int i = song;
@@ -849,11 +827,11 @@ int playPlaylist(int fd, int song, int stopOnError)
if (song == -1) {
if (playlist.length == 0)
- return 0;
+ return PLAYLIST_RESULT_SUCCESS;
if (playlist_state == PLAYLIST_STATE_PLAY) {
playerSetPause(0);
- return 0;
+ return PLAYLIST_RESULT_SUCCESS;
}
if (playlist.current >= 0 && playlist.current < playlist.length) {
i = playlist.current;
@@ -861,9 +839,7 @@ int playPlaylist(int fd, int song, int stopOnError)
i = 0;
}
} else if (song < 0 || song >= playlist.length) {
- commandError(fd, ACK_ERROR_NO_EXIST,
- "song doesn't exist: \"%i\"", song);
- return -1;
+ return PLAYLIST_RESULT_BAD_RANGE;
}
if (playlist.random) {
@@ -884,18 +860,19 @@ int playPlaylist(int fd, int song, int stopOnError)
playlist_errorCount = 0;
playPlaylistOrderNumber(i);
- return 0;
+ return PLAYLIST_RESULT_SUCCESS;
}
-int playPlaylistById(int fd, int id, int stopOnError)
+enum playlist_result playPlaylistById(int id, int stopOnError)
{
if (id == -1) {
- return playPlaylist(fd, id, stopOnError);
+ return playPlaylist(id, stopOnError);
}
- checkSongId(id);
+ if (!song_id_exists(id))
+ return PLAYLIST_RESULT_NO_SUCH_SONG;
- return playPlaylist(fd, playlist.idToPosition[id], stopOnError);
+ return playPlaylist(playlist.idToPosition[id], stopOnError);
}
static void syncCurrentPlayerDecodeMetadata(void)
@@ -1020,28 +997,22 @@ void setPlaylistRepeatStatus(int status)
playlist.repeat = status;
}
-int moveSongInPlaylist(int fd, int from, int to)
+enum playlist_result moveSongInPlaylist(int from, int to)
{
int i;
Song *tmpSong;
int tmpId;
int currentSong;
- if (from < 0 || from >= playlist.length) {
- commandError(fd, ACK_ERROR_NO_EXIST,
- "song doesn't exist: \"%i\"", from);
- return -1;
- }
+ if (from < 0 || from >= playlist.length)
+ return PLAYLIST_RESULT_BAD_RANGE;
if ((to >= 0 && to >= playlist.length) ||
- (to < 0 && abs(to) > playlist.length)) {
- commandError(fd, ACK_ERROR_NO_EXIST,
- "song doesn't exist: \"%i\"", to);
- return -1;
- }
+ (to < 0 && abs(to) > playlist.length))
+ return PLAYLIST_RESULT_BAD_RANGE;
if (from == to) /* no-op */
- return 0;
+ return PLAYLIST_RESULT_SUCCESS;
/*
* (to < 0) => move to offset from current song
@@ -1051,7 +1022,7 @@ int moveSongInPlaylist(int fd, int from, int to)
if (to < 0 && playlist.current >= 0) {
if (currentSong == from)
/* no-op, can't be moved to offset of itself */
- return 0;
+ return PLAYLIST_RESULT_SUCCESS;
to = (currentSong + abs(to)) % playlist.length;
}
@@ -1116,14 +1087,15 @@ int moveSongInPlaylist(int fd, int from, int to)
incrPlaylistVersion();
- return 0;
+ return PLAYLIST_RESULT_SUCCESS;
}
-int moveSongInPlaylistById(int fd, int id1, int to)
+enum playlist_result moveSongInPlaylistById(int id1, int to)
{
- checkSongId(id1);
+ if (!song_id_exists(id1))
+ return PLAYLIST_RESULT_NO_SUCH_SONG;
- return moveSongInPlaylist(fd, playlist.idToPosition[id1], to);
+ return moveSongInPlaylist(playlist.idToPosition[id1], to);
}
static void orderPlaylist(void)
@@ -1222,7 +1194,7 @@ void previousSongInPlaylist(void)
}
}
-void shufflePlaylist(mpd_unused int fd)
+void shufflePlaylist(void)
{
int i;
int ri;
@@ -1253,50 +1225,39 @@ void shufflePlaylist(mpd_unused int fd)
}
}
-int deletePlaylist(int fd, const char *utf8file)
+enum playlist_result deletePlaylist(const char *utf8file)
{
char path_max_tmp[MPD_PATH_MAX];
utf8_to_fs_playlist_path(path_max_tmp, utf8file);
- if (!isPlaylist(path_max_tmp)) {
- commandError(fd, ACK_ERROR_NO_EXIST,
- "playlist \"%s\" not found", utf8file);
- return -1;
- }
+ if (!isPlaylist(path_max_tmp))
+ return PLAYLIST_RESULT_NO_SUCH_LIST;
- if (unlink(path_max_tmp) < 0) {
- commandError(fd, ACK_ERROR_SYSTEM,
- "problems deleting file");
- return -1;
- }
+ if (unlink(path_max_tmp) < 0)
+ return PLAYLIST_RESULT_ERRNO;
- return 0;
+ return PLAYLIST_RESULT_SUCCESS;
}
-int savePlaylist(int fd, const char *utf8file)
+enum playlist_result savePlaylist(const char *utf8file)
{
FILE *fp;
int i;
struct stat sb;
char path_max_tmp[MPD_PATH_MAX];
- if (!valid_playlist_name(fd, utf8file))
- return -1;
+ if (!is_valid_playlist_name(utf8file))
+ return PLAYLIST_RESULT_BAD_NAME;
utf8_to_fs_playlist_path(path_max_tmp, utf8file);
- if (!stat(path_max_tmp, &sb)) {
- commandError(fd, ACK_ERROR_EXIST, "a file or directory already "
- "exists with the name \"%s\"", utf8file);
- return -1;
- }
+ if (!stat(path_max_tmp, &sb))
+ return PLAYLIST_RESULT_LIST_EXISTS;
while (!(fp = fopen(path_max_tmp, "w")) && errno == EINTR);
- if (fp == NULL) {
- commandError(fd, ACK_ERROR_SYSTEM, "failed to create file");
- return -1;
- }
+ if (fp == NULL)
+ return PLAYLIST_RESULT_ERRNO;
for (i = 0; i < playlist.length; i++) {
char tmp[MPD_PATH_MAX];
@@ -1313,7 +1274,7 @@ int savePlaylist(int fd, const char *utf8file)
while (fclose(fp) && errno == EINTR) ;
- return 0;
+ return PLAYLIST_RESULT_SUCCESS;
}
int getPlaylistCurrentSong(void)
@@ -1335,15 +1296,12 @@ int getPlaylistLength(void)
return playlist.length;
}
-int seekSongInPlaylist(int fd, int song, float seek_time)
+enum playlist_result seekSongInPlaylist(int song, float seek_time)
{
int i, ret;
- if (song < 0 || song >= playlist.length) {
- commandError(fd, ACK_ERROR_NO_EXIST,
- "song doesn't exist: \"%i\"", song);
- return -1;
- }
+ if (song < 0 || song >= playlist.length)
+ return PLAYLIST_RESULT_BAD_RANGE;
if (playlist.random)
for (i = 0; song != playlist.order[i]; i++) ;
@@ -1366,16 +1324,17 @@ int seekSongInPlaylist(int fd, int song, float seek_time)
ret = playerSeek(playlist.songs[playlist.order[i]], seek_time);
if (ret < 0)
- commandError(fd, ACK_ERROR_PLAYER_SYNC,
- "player not currently playing");
- return ret;
+ return PLAYLIST_RESULT_NOT_PLAYING;
+
+ return PLAYLIST_RESULT_SUCCESS;
}
-int seekSongInPlaylistById(int fd, int id, float seek_time)
+enum playlist_result seekSongInPlaylistById(int id, float seek_time)
{
- checkSongId(id);
+ if (!song_id_exists(id))
+ return PLAYLIST_RESULT_NO_SUCH_SONG;
- return seekSongInPlaylist(fd, playlist.idToPosition[id], seek_time);
+ return seekSongInPlaylist(playlist.idToPosition[id], seek_time);
}
int getPlaylistSongId(int song)
@@ -1426,7 +1385,7 @@ int loadPlaylist(int fd, const char *utf8file)
node = list->firstNode;
while (node != NULL) {
char *temp = node->data;
- if ((addToPlaylist(STDERR_FILENO, temp, NULL)) < 0) {
+ if ((addToPlaylist(temp, NULL)) != PLAYLIST_RESULT_SUCCESS) {
/* for windows compatibility, convert slashes */
char *temp2 = xstrdup(temp);
char *p = temp2;
@@ -1435,7 +1394,7 @@ int loadPlaylist(int fd, const char *utf8file)
*p = '/';
p++;
}
- if ((addToPlaylist(STDERR_FILENO, temp2, NULL)) < 0) {
+ if ((addToPlaylist(temp, NULL)) != PLAYLIST_RESULT_SUCCESS) {
commandError(fd, ACK_ERROR_PLAYLIST_LOAD,
"can't add file \"%s\"", temp2);
}