few fixes/improvements to metadata editor and related plugin APIs

1 files changed, 47 insertions, 3 deletions

diff --git a/playlist.c b/playlist.c
index fc7fb6ee..74dcd1bb 100644
--- a/playlist.c
+++ b/playlist.c
@@ -1987,8 +1987,8 @@ pl_replace_meta (playItem_t *it, const char *key, const char *value) {
         m = m->next;
     }
     if (m) {
-        metacache_remove_string (m->value);//free (m->value);
-        m->value = metacache_add_string (value);//strdup (value);
+        metacache_remove_string (m->value);
+        m->value = metacache_add_string (value);
         UNLOCK;
         return;
     }
@@ -2012,6 +2012,28 @@ pl_set_meta_float (playItem_t *it, const char *key, float value) {
     pl_replace_meta (it, key, s);
 }
 
+void
+pl_delete_meta (playItem_t *it, const char *key) {
+    DB_metaInfo_t *prev = NULL;
+    DB_metaInfo_t *m = it->meta;
+    while (m) {
+        if (!strcasecmp (key, m->key)) {
+            if (prev) {
+                prev->next = m->next;
+            }
+            else {
+                it->meta = m->next;
+            }
+            metacache_remove_string (m->key);
+            metacache_remove_string (m->value);
+            free (m);
+            break;
+        }
+        prev = m;
+        m = m->next;
+    }
+}
+
 const char *
 pl_find_meta (playItem_t *it, const char *key) {
     DB_metaInfo_t *m = it->meta;
@@ -2037,10 +2059,32 @@ pl_find_meta_float (playItem_t *it, const char *key, float def) {
 }
 
 DB_metaInfo_t *
-pl_get_metadata (playItem_t *it) {
+pl_get_metadata_head (playItem_t *it) {
     return it->meta;
 }
 
+void
+pl_delete_metadata (playItem_t *it, DB_metaInfo_t *meta) {
+    DB_metaInfo_t *prev = NULL;
+    DB_metaInfo_t *m = it->meta;
+    while (m) {
+        if (m == meta) {
+            if (prev) {
+                prev->next = m->next;
+            }
+            else {
+                it->meta = m->next;
+            }
+            metacache_remove_string (m->key);
+            metacache_remove_string (m->value);
+            free (m);
+            break;
+        }
+        prev = m;
+        m = m->next;
+    }
+}
+
 int
 pl_delete_selected (void) {
     GLOBAL_LOCK;