// Close closes a BLOB handle.
// (See http://sqlite.org/c3ref/blob_close.html)
func (r *BlobReader) Close() error {
if r == nil {
return errors.New("nil sqlite blob")
}
rv := C.sqlite3_blob_close(r.bl)
if rv != C.SQLITE_OK {
return r.c.error(rv, "BlobReader.Close")
}
r.bl = nil
return nil
}
// Close closes a BLOB handle.
// (See http://sqlite.org/c3ref/blob_close.html)
func (r *BlobReader) Close() error {
if r == nil {
return errors.New("nil sqlite blob")
}
if r.bl == nil {
return nil
}
rv := C.sqlite3_blob_close(r.bl) // must be called only once
r.bl = nil
if rv != C.SQLITE_OK {
return r.c.error(rv, "BlobReader.Close")
}
return nil
}
func (c *Conn) blob_open(db, table, column string, row int64, write bool) (*C.sqlite3_blob, error) {
zDb := C.CString(db)
defer C.free(unsafe.Pointer(zDb))
zTable := C.CString(table)
defer C.free(unsafe.Pointer(zTable))
zColumn := C.CString(column)
defer C.free(unsafe.Pointer(zColumn))
var bl *C.sqlite3_blob
rv := C.sqlite3_blob_open(c.db, zDb, zTable, zColumn, C.sqlite3_int64(row), btocint(write), &bl)
if rv != C.SQLITE_OK {
if bl != nil {
C.sqlite3_blob_close(bl)
}
return nil, c.error(rv, fmt.Sprintf("Conn.blob_open(db: %q, tbl: %q, col: %q, row: %d)", db, table, column, row))
}
if bl == nil {
return nil, errors.New("sqlite succeeded without returning a blob")
}
return bl, nil
}