[feat] add support for the blob interfacedevelop

Pysqlcipher support for the sqlite blob interface:
https://sqlite.org/c3ref/blob_open.html

Copying the code from the PR in pysqlite:
https://github.com/ghaering/pysqlite/pull/93

1 files changed, 24 insertions, 0 deletions

diff --git a/src/blob.h b/src/blob.h
new file mode 100644
index 0000000..faaef64
--- /dev/null
+++ b/src/blob.h
@@ -0,0 +1,24 @@
+#ifndef PYSQLITE_BLOB_H
+#define PYSQLITE_BLOB_H
+#include "Python.h"
+#include "sqlite3.h"
+#include "connection.h"
+
+typedef struct
+{
+    PyObject_HEAD
+    pysqlite_Connection* connection;
+    sqlite3_blob *blob;
+    unsigned int offset;
+
+    PyObject* in_weakreflist; /* List of weak references */
+} pysqlite_Blob;
+
+extern PyTypeObject pysqlite_BlobType;
+
+int pysqlite_blob_init(pysqlite_Blob* self, pysqlite_Connection* connection, sqlite3_blob *blob);
+PyObject* pysqlite_blob_close(pysqlite_Blob *self);
+
+int pysqlite_blob_setup_types(void);
+
+#endif