Method blobopen

crates/stdlib/src/_sqlite3.rs:1053–1085

(
            zelf: PyRef<Self>,
            args: BlobOpenArgs,
            vm: &VirtualMachine,
        )

        #[pymethod]
        fn blobopen(
            zelf: PyRef<Self>,
            args: BlobOpenArgs,
            vm: &VirtualMachine,
        ) -> PyResult<PyRef<Blob>> {
            let table = args.table.to_cstring(vm)?;
            let column = args.column.to_cstring(vm)?;
            let name = args.name.to_cstring(vm)?;

            let db = zelf.db_lock(vm)?;

            let mut blob = null_mut();
            let ret = unsafe {
                sqlite3_blob_open(
                    db.db,
                    name.as_ptr(),
                    table.as_ptr(),
                    column.as_ptr(),
                    args.row,
                    (!args.readonly) as c_int,
                    &mut blob,
                )
            };
            db.check(ret, vm)?;
            drop(db);

            let blob = SqliteBlob { blob };
            let blob = Blob {
                connection: zelf,
                inner: PyMutex::new(Some(BlobInner { blob, offset: 0 })),
            };
            Ok(blob.into_ref(&vm.ctx))
        }

        #[pymethod]
        fn close(&self, vm: &VirtualMachine) -> PyResult<()> {