make get_playlist_data() generic.
[paraslash.git] / playlist.c
index 6f952e6..6f9f966 100644 (file)
@@ -13,7 +13,7 @@ struct playlist_info {
        /** The number of entries currently in the playlist. */
        unsigned length;
 };
-static struct playlist_info playlist;
+static struct playlist_info current_playlist;
 
 /**
  * Re-insert an audio file into the tree of admissible files.
@@ -28,71 +28,60 @@ int playlist_update_audio_file(struct osl_row *aft_row)
        return score_update(aft_row, 0);
 }
 
-static int add_playlist_entry(char *line, void *private_data)
+static int add_playlist_entry(char *path, void *data)
 {
+       struct playlist_info *playlist = data;
        struct osl_row *aft_row;
-       struct playlist_info *pli = private_data;
-       int ret = aft_get_row_of_path(line, &aft_row);
+       int ret = aft_get_row_of_path(path, &aft_row);
 
        if (ret < 0) {
-               PARA_NOTICE_LOG("path not found in audio file table: %s\n",
-                       line);
+               PARA_NOTICE_LOG("%s: %s\n", path, PARA_STRERROR(-ret));
                return 1;
        }
-       ret = score_add(aft_row, -pli->length);
+       ret = score_add(aft_row, -playlist->length);
        if (ret < 0) {
-               PARA_ERROR_LOG("failed to add %s: %d\n", line, ret);
+               PARA_ERROR_LOG("failed to add %s: %d\n", path, ret);
                return ret;
        }
-       pli->length++;
+       playlist->length++;
        return 1;
 }
 
-static int load_playlist(struct osl_row *row)
+/* returns -E_PLAYLIST_LOADED on _success_ to terminate the loop */
+static int load_playlist(struct osl_row *row, void *data)
 {
-       struct osl_object obj;
+       struct playlist_info *playlist = data;
+       struct osl_object playlist_def;
+       char *playlist_name;
        int ret;
 
-       ret = osl_get_object(playlists_table, row, BLOBCOL_NAME, &obj);
-       if (ret < 0)
-               return ret;
-       playlist.name = para_strdup(obj.data);
-       playlist.length = 0;
-       ret = osl_open_disk_object(playlists_table, row, BLOBCOL_DEF, &obj);
+       ret = pl_get_name_and_def_by_row(row, &playlist_name, &playlist_def);
        if (ret < 0)
                goto err;
-       ret = for_each_line_ro(obj.data, obj.size, add_playlist_entry,
-               &playlist);
-       osl_close_disk_object(&obj);
+       playlist->length = 0;
+       ret = for_each_line_ro(playlist_def.data, playlist_def.size,
+               add_playlist_entry, playlist);
+       osl_close_disk_object(&playlist_def);
        if (ret < 0)
                goto err;
        ret = -E_PLAYLIST_EMPTY;
-       if (!playlist.length)
+       if (!playlist->length)
                goto err;
-       PARA_NOTICE_LOG("loaded playlist %s (%u files)\n", playlist.name,
-               playlist.length);
-       return 1;
-err:
-       free(playlist.name);
-       return ret;
-}
-
-/* returns -E_PLAYLIST_LOADED on _success_ to terminate the loop */
-static int playlist_loop(struct osl_row *row, __a_unused void *private_data)
-{
-       int ret = load_playlist(row);
-       if (ret < 0) {
-               if (ret != -E_DUMMY_ROW)
-                       PARA_NOTICE_LOG("unable to load playlist, trying next\n");
-               return 1;
-       }
+       playlist->name = para_strdup(playlist_name);
+       PARA_NOTICE_LOG("loaded playlist %s (%u files)\n", playlist->name,
+               playlist->length);
        return -E_PLAYLIST_LOADED;
+err:
+       if (ret != -E_DUMMY_ROW)
+               PARA_NOTICE_LOG("unable to load playlist (%s)\n",
+                       PARA_STRERROR(-ret));
+       return 1;
 }
 
-static int load_first_available_playlist(void)
+static int load_first_available_playlist(struct playlist_info *playlist)
 {
-       int ret = osl_rbtree_loop(playlists_table, BLOBCOL_NAME, NULL,
-               playlist_loop);
+       int ret = osl_rbtree_loop(playlists_table, BLOBCOL_NAME, playlist,
+               load_playlist);
        if (ret == -E_PLAYLIST_LOADED) /* success */
                return 1;
        if (ret < 0)
@@ -101,6 +90,51 @@ static int load_first_available_playlist(void)
        return -E_NO_PLAYLIST;
 }
 
+static int check_playlist_path(char *path, void *data)
+{
+       struct para_buffer *pb = data;
+       struct osl_row *aft_row;
+       int ret = aft_get_row_of_path(path, &aft_row);
+
+       if (ret < 0)
+               para_printf(pb, "%s: %s\n", path, PARA_STRERROR(-ret));
+       return 1;
+}
+
+static int check_playlist(struct osl_row *row, void *data)
+{
+       struct para_buffer *pb = data;
+       struct osl_object playlist_def;
+       char *playlist_name;
+       int ret = pl_get_name_and_def_by_row(row, &playlist_name, &playlist_def);
+
+       if (ret < 0) {
+               para_printf(pb, "failed to get playlist data: %s\n",
+                       PARA_STRERROR(-ret));
+               return 1;
+       }
+       if (*playlist_name) { /* skip dummy row */
+               para_printf(pb, "checking playlist %s...\n", playlist_name);
+               for_each_line_ro(playlist_def.data, playlist_def.size,
+                       check_playlist_path, pb);
+       }
+       osl_close_disk_object(&playlist_def);
+       return 1;
+}
+
+int playlist_check_callback(__a_unused const struct osl_object *query,
+               struct osl_object *result)
+{
+       struct para_buffer pb = {.buf = NULL};
+
+       para_printf(&pb, "checking playlists...\n");
+       osl_rbtree_loop(playlists_table, BLOBCOL_ID, &pb,
+               check_playlist);
+       result->data = pb.buf;
+       result->size = pb.size;
+       return 1;
+}
+
 /**
  * Close the current playlist.
  *
@@ -108,8 +142,8 @@ static int load_first_available_playlist(void)
  */
 void playlist_close(void)
 {
-       free(playlist.name);
-       playlist.name = NULL;
+       free(current_playlist.name);
+       current_playlist.name = NULL;
 }
 
 /**
@@ -131,7 +165,7 @@ int playlist_open(char *name)
        struct osl_row *row;
 
        if (!name)
-               return load_first_available_playlist();
+               return load_first_available_playlist(&current_playlist);
        obj.data = name;
        obj.size = strlen(obj.data);
        ret = osl_get_row(playlists_table, BLOBCOL_NAME, &obj, &row);
@@ -139,5 +173,5 @@ int playlist_open(char *name)
                PARA_NOTICE_LOG("failed to load playlist %s\n", name);
                return ret;
        }
-       return load_playlist(row);
+       return load_playlist(row, &current_playlist);
 }