dont use like query to remove resize cache

oml/item/icons.py

@@ -65,31 +65,60 @@ class Icons(dict):
 
     def __setitem__(self, id, data):
         sql = 'INSERT OR REPLACE INTO icon values (?, ?)'
-        conn = self.connect()
-        c = conn.cursor()
-        data = sqlite3.Binary(data)
-        c.execute(sql, (id, data))
-        conn.commit()
-        c.close()
-        conn.close()
+        try:
+            conn = self.connect()
+            c = conn.cursor()
+            data = sqlite3.Binary(data)
+            c.execute(sql, (id, data))
+            conn.commit()
+            c.close()
+            conn.close()
+        except:
+            logger.debug('failed to insert icon %s', id)
 
     def __delitem__(self, id):
         sql = 'DELETE FROM icon WHERE id = ?'
-        conn = self.connect()
-        c = conn.cursor()
-        c.execute(sql, (id, ))
-        conn.commit()
-        c.close()
-        conn.close()
+        try:
+            conn = self.connect()
+            c = conn.cursor()
+            c.execute(sql, (id, ))
+            conn.commit()
+            c.close()
+            conn.close()
+        except:
+            logger.debug('failed to delete icon %s', id)
 
     def clear(self, prefix):
-        sql = 'DELETE FROM icon WHERE id LIKE ?'
-        conn = self.connect()
-        c = conn.cursor()
-        c.execute(sql, (prefix + '%', ))
-        conn.commit()
-        c.close()
-        conn.close()
+        try:
+            conn = self.connect()
+            c = conn.cursor()
+            sql = 'DELETE FROM icon WHERE id = ?'
+            for size in (64, 128, 256, 512, 1024):
+                id = '%s%s' % (prefix, size)
+                c.execute(sql, (id, ))
+            conn.commit()
+            c.close()
+            conn.close()
+        except:
+            logger.debug('failed to clear icon %s', id)
+
+    def vacuum(self, ids):
+            conn = self.connect()
+            c = conn.cursor()
+            sql = 'SELECT id from icon'
+            c.execute(sql)
+            icons = [row[0] for row in c]
+            sql = 'DELETE FROM icon WHERE id = ?'
+            for i in icons:
+                id = i.split(':')[1]
+                if id not in ids:
+                    c.execute(sql, (id, ))
+            conn.commit()
+            sql = 'VACUUM'
+            c.execute(sql)
+            conn.commit()
+            c.close()
+            conn.close()
 
 icons = Icons(icons_db_path)
 
@@ -121,10 +150,12 @@ def get_icon_sync(id, type_, size):
         if not data:
             data = icons.default_cover()
         if size:
-            data = icons[skey] = resize_image(data, size=size)
+            data = resize_image(data, size=size)
+            icons[skey] = data
         size = None
     if size:
-        data = icons[skey] = resize_image(data, size=size)
+        data = resize_image(data, size=size)
+        icons[skey] = data
     data = bytes(data) or ''
     return data
 
@@ -161,7 +192,8 @@ def get_icon_app(id, type_, size, callback):
                 data = icons.default_cover()
                 size = None
             if size:
-                data = icons[skey] = resize_image(data, size=size)
+                data = resize_image(data, size=size)
+                icons[skey] = data
             data = bytes(data) or ''
     callback(data)