change char * to const char * in libmpdclient where appropriate to avoid casts

src/libmpdclient.c

@@ -1649,7 +1649,7 @@ void mpd_sendSeekIdCommand(mpd_Connection * connection, int id, int time) {
 	free(string);
 }
 
-void mpd_sendUpdateCommand(mpd_Connection * connection, char * path) {
+void mpd_sendUpdateCommand(mpd_Connection * connection, const char * path) {
 	char * sPath = mpd_sanitizeArg(path);
 	int len = strlen("update")+2+strlen(sPath)+3;
 	char *string = malloc(len);
@@ -1997,7 +1997,7 @@ void mpd_commitSearch(mpd_Connection *connection)
  * List the content, with full metadata, of a stored playlist.
  *
  */
-void mpd_sendListPlaylistInfoCommand(mpd_Connection *connection, char *path)
+void mpd_sendListPlaylistInfoCommand(mpd_Connection *connection, const char *path)
 {
 	char *arg = mpd_sanitizeArg(path);
 	int len = strlen("listplaylistinfo")+2+strlen(arg)+3;
@@ -2038,7 +2038,7 @@ void mpd_sendPlaylistClearCommand(mpd_Connection *connection, char *path)
 }
 
 void mpd_sendPlaylistAddCommand(mpd_Connection *connection,
-                                char *playlist, char *path)
+                                const char *playlist, const char *path)
 {
 	char *sPlaylist = mpd_sanitizeArg(playlist);
 	char *sPath = mpd_sanitizeArg(path);
@@ -2052,7 +2052,7 @@ void mpd_sendPlaylistAddCommand(mpd_Connection *connection,
 }
 
 void mpd_sendPlaylistMoveCommand(mpd_Connection *connection,
-                                 char *playlist, int from, int to)
+                                 const char *playlist, int from, int to)
 {
 	char *sPlaylist = mpd_sanitizeArg(playlist);
 	int len = strlen("playlistmove")+

src/libmpdclient.h

@@ -527,7 +527,7 @@ void mpd_sendVolumeCommand(mpd_Connection * connection, int volumeChange);
 
 void mpd_sendCrossfadeCommand(mpd_Connection * connection, int seconds);
 
-void mpd_sendUpdateCommand(mpd_Connection * connection, char * path);
+void mpd_sendUpdateCommand(mpd_Connection * connection, const char * path);
 
 /* returns the update job id, call this after a update command*/
 int mpd_getUpdateId(mpd_Connection * connection);
@@ -605,7 +605,7 @@ char *mpd_getNextTagType(mpd_Connection * connection);
  * List the content, with full metadata, of a stored playlist.
  *
  */
-void mpd_sendListPlaylistInfoCommand(mpd_Connection *connection, char *path);
+void mpd_sendListPlaylistInfoCommand(mpd_Connection *connection, const char *path);
 
 /**
  * @param connection a MpdConnection
@@ -667,10 +667,10 @@ void mpd_startStatsSearch(mpd_Connection *connection);
 void mpd_sendPlaylistClearCommand(mpd_Connection *connection, char *path);
 
 void mpd_sendPlaylistAddCommand(mpd_Connection *connection,
-                                char *playlist, char *path);
+                                const char *playlist, const char *path);
 
 void mpd_sendPlaylistMoveCommand(mpd_Connection *connection,
-                                 char *playlist, int from, int to);
+                                 const char *playlist, int from, int to);
 
 void mpd_sendPlaylistDeleteCommand(mpd_Connection *connection,
                                    const char *playlist, int pos);

src/mpdpp.cpp

@@ -207,7 +207,7 @@ void Connection::UpdateDirectory(const string &path) const
 {
 	if (isConnected)
 	{
-		mpd_sendUpdateCommand(itsConnection, (char *) path.c_str());
+		mpd_sendUpdateCommand(itsConnection, path.c_str());
 		mpd_finishCommand(itsConnection);
 	}
 }
@@ -348,7 +348,7 @@ void Connection::AddToPlaylist(const string &path, const string &file) const
 {
 	if (isConnected)
 	{
-		mpd_sendPlaylistAddCommand(itsConnection, (char *) path.c_str(), (char *) file.c_str());
+		mpd_sendPlaylistAddCommand(itsConnection, path.c_str(), file.c_str());
 		if (!isCommandsListEnabled)
 			mpd_finishCommand(itsConnection);
 	}
@@ -358,7 +358,7 @@ void Connection::Move(const string &path, int from, int to) const
 {
 	if (isConnected)
 	{
-		mpd_sendPlaylistMoveCommand(itsConnection, (char *) path.c_str(), from, to);
+		mpd_sendPlaylistMoveCommand(itsConnection, path.c_str(), from, to);
 		if (!isCommandsListEnabled)
 			mpd_finishCommand(itsConnection);
 	}
@@ -447,7 +447,7 @@ void Connection::GetPlaylistContent(const string &path, SongList &v) const
 {
 	if (isConnected)
 	{
-		mpd_sendListPlaylistInfoCommand(itsConnection, (char *) path.c_str());
+		mpd_sendListPlaylistInfoCommand(itsConnection, path.c_str());
 		mpd_InfoEntity *item = NULL;
 		while ((item = mpd_getNextInfoEntity(itsConnection)) != NULL)
 		{