New history feature

Default key is 'h', playlists are no longer part of PianoHandle_t now
(=> libpiano's api changed)

4 files changed, 16 insertions, 14 deletions

diff --git a/libpiano/src/main.c b/libpiano/src/main.c
index 16d30d7..2bf8426 100644
--- a/libpiano/src/main.c
+++ b/libpiano/src/main.c
@@ -133,10 +133,10 @@ void PianoDestroyStations (PianoStation_t *stations) {
  *	@param piano handle
  *	@return nothing
  */
-void PianoDestroyPlaylist (PianoHandle_t *ph) {
+void PianoDestroyPlaylist (PianoSong_t *playlist) {
 	PianoSong_t *curSong, *lastSong;
 
-	curSong = ph->playlist;
+	curSong = playlist;
 	while (curSong != NULL) {
 		PianoFree (curSong->audioUrl, 0);
 		PianoFree (curSong->artist, 0);
@@ -152,7 +152,6 @@ void PianoDestroyPlaylist (PianoHandle_t *ph) {
 		curSong = curSong->next;
 		PianoFree (lastSong, sizeof (*lastSong));
 	}
-	ph->playlist = NULL;
 }
 
 /*	frees the whole piano handle structure
@@ -176,7 +175,6 @@ void PianoDestroy (PianoHandle_t *ph) {
 		curGenreCat = curGenreCat->next;
 		PianoFree (lastGenreCat, sizeof (*lastGenreCat));
 	}
-	PianoDestroyPlaylist (ph);
 	memset (ph, 0, sizeof (*ph));
 }
 
@@ -255,9 +253,11 @@ PianoReturn_t PianoGetStations (PianoHandle_t *ph) {
 /*	get next songs for station (usually four tracks)
  *	@param piano handle
  *	@param station id
+ *	@param audio format
+ *	@param return value: playlist
  */
 PianoReturn_t PianoGetPlaylist (PianoHandle_t *ph, const char *stationId,
-		PianoAudioFormat_t format) {
+		PianoAudioFormat_t format, PianoSong_t **retPlaylist) {
 	char xmlSendBuf[PIANO_SEND_BUFFER_SIZE], *retStr;
 	PianoReturn_t ret;
 
@@ -283,7 +283,7 @@ PianoReturn_t PianoGetPlaylist (PianoHandle_t *ph, const char *stationId,
 
 	if ((ret = PianoHttpPost (&ph->waith, xmlSendBuf, &retStr)) ==
 			PIANO_RET_OK) {
-		ret = PianoXmlParsePlaylist (ph, retStr);
+		ret = PianoXmlParsePlaylist (ph, retStr, retPlaylist);
 		PianoFree (retStr, 0);
 	}
 
diff --git a/libpiano/src/piano.h b/libpiano/src/piano.h
index 3bb9108..cd3e8ca 100644
--- a/libpiano/src/piano.h
+++ b/libpiano/src/piano.h
@@ -90,7 +90,6 @@ typedef struct PianoHandle {
 	PianoUserInfo_t user;
 	/* linked lists */
 	PianoStation_t *stations;
-	PianoSong_t *playlist;
 	PianoGenreCategory_t *genreStations;
 } PianoHandle_t;
 
@@ -109,13 +108,13 @@ typedef enum {PIANO_RET_OK, PIANO_RET_ERR, PIANO_RET_XML_INVALID,
 
 void PianoInit (PianoHandle_t *);
 void PianoDestroy (PianoHandle_t *);
-void PianoDestroyPlaylist (PianoHandle_t *);
+void PianoDestroyPlaylist (PianoSong_t *);
 void PianoDestroySearchResult (PianoSearchResult_t *);
 PianoReturn_t PianoConnect (PianoHandle_t *, const char *, const char *);
 
 PianoReturn_t PianoGetStations (PianoHandle_t *);
 PianoReturn_t PianoGetPlaylist (PianoHandle_t *, const char *,
-		PianoAudioFormat_t);
+		PianoAudioFormat_t, PianoSong_t **);
 
 PianoReturn_t PianoRateTrack (PianoHandle_t *, PianoSong_t *,
 		PianoSongRating_t);
diff --git a/libpiano/src/xml.c b/libpiano/src/xml.c
index 8e8fb2a..8d34a32 100644
--- a/libpiano/src/xml.c
+++ b/libpiano/src/xml.c
@@ -484,8 +484,10 @@ PianoReturn_t PianoXmlParseAddSeed (PianoHandle_t *ph, char *xml,
 /*	parses playlist; used when searching too
  *	@param piano handle
  *	@param xml document
+ *	@param return: playlist
  */
-PianoReturn_t PianoXmlParsePlaylist (PianoHandle_t *ph, char *xml) {
+PianoReturn_t PianoXmlParsePlaylist (PianoHandle_t *ph, char *xml,
+		PianoSong_t **retPlaylist) {
 	ezxml_t xmlDoc, dataNode;
 	PianoReturn_t ret;
 
@@ -508,10 +510,10 @@ PianoReturn_t PianoXmlParsePlaylist (PianoHandle_t *ph, char *xml) {
 		PianoXmlStructParser (ezxml_child (dataNode, "struct"),
 				PianoXmlParsePlaylistCb, tmpSong);
 		/* begin linked list or append */
-		if (ph->playlist == NULL) {
-			ph->playlist = tmpSong;
+		if (*retPlaylist == NULL) {
+			*retPlaylist = tmpSong;
 		} else {
-			PianoSong_t *curSong = ph->playlist;
+			PianoSong_t *curSong = *retPlaylist;
 			while (curSong->next != NULL) {
 				curSong = curSong->next;
 			}
diff --git a/libpiano/src/xml.h b/libpiano/src/xml.h
index 5c0e5c2..7d1f1b2 100644
--- a/libpiano/src/xml.h
+++ b/libpiano/src/xml.h
@@ -28,7 +28,8 @@ THE SOFTWARE.
 
 PianoReturn_t PianoXmlParseUserinfo (PianoHandle_t *ph, const char *xml);
 PianoReturn_t PianoXmlParseStations (PianoHandle_t *ph, const char *xml);
-PianoReturn_t PianoXmlParsePlaylist (PianoHandle_t *ph, const char *xml);
+PianoReturn_t PianoXmlParsePlaylist (PianoHandle_t *ph, const char *xml,
+		PianoSong_t **);
 PianoReturn_t PianoXmlParseSearch (const char *searchXml,
 		PianoSearchResult_t *searchResult);
 PianoReturn_t PianoXmlParseSimple (const char *xml);