1 files changed, 22 insertions, 0 deletions
diff --git a/src/vtab.c b/src/vtab.c
index 8f6db9f47..dd8a755be 100644
--- a/src/vtab.c
+++ b/src/vtab.c
@@ -134,6 +134,28 @@ int sqlite3_create_module_v2(
 }
 
 /*
+** External API to drop all virtual-table modules, except those named
+** on the azNames list.
+*/
+int sqlite3_drop_modules(sqlite3 *db, const char** azNames){
+  HashElem *pThis, *pNext;
+#ifdef SQLITE_ENABLE_API_ARMOR
+  if( !sqlite3SafetyCheckOk(db) || zName==0 ) return SQLITE_MISUSE_BKPT;
+#endif
+  for(pThis=sqliteHashFirst(&db->aModule); pThis; pThis=pNext){
+    Module *pMod = (Module*)sqliteHashData(pThis);
+    pNext = sqliteHashNext(pThis);
+    if( azNames ){
+      int ii;
+      for(ii=0; azNames[ii]!=0 && strcmp(azNames[ii],pMod->zName)!=0; ii++){}
+      if( azNames[ii]!=0 ) continue;
+    }
+    createModule(db, pMod->zName, 0, 0, 0);
+  }
+  return SQLITE_OK;
+}
+
+/*
 ** Decrement the reference count on a Module object.  Destroy the
 ** module when the reference count reaches zero.
 */