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backup.c
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backup.c
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/* backup.c - the backup type
*
* Copyright (C) 2010 Gerhard Häring <gh@ghaering.de>
*
* This file is part of pysqlite.
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
#include "module.h"
#include "backup.h"
#include "sqlitecompat.h"
void pysqlite_backup_dealloc(pysqlite_Backup* self)
{
int rc;
if (self->backup) {
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_backup_finish(self->backup);
Py_END_ALLOW_THREADS
Py_DECREF(self->source_con);
Py_DECREF(self->dest_con);
self->backup = NULL;
}
Py_TYPE(self)->tp_free((PyObject*)self);
}
PyObject* pysqlite_backup_step(pysqlite_Backup* self, PyObject* args, PyObject* kwargs)
{
int npages;
if (!PyArg_ParseTuple(args, "i", &npages)) {
return NULL;
}
int rc = sqlite3_backup_step(self->backup, npages);
if (rc == SQLITE_DONE) {
Py_RETURN_TRUE;
} else if (rc == SQLITE_OK) {
Py_RETURN_FALSE;
} else {
PyErr_SetString(pysqlite_OperationalError, sqlite3_errmsg(self->source_con->db));
return NULL;
}
}
static PyObject* pysqlite_backup_get_remaining(pysqlite_Backup* self, void* unused)
{
return Py_BuildValue("i", sqlite3_backup_remaining(self->backup));
}
static PyObject* pysqlite_backup_get_pagecount(pysqlite_Backup* self, void* unused)
{
return Py_BuildValue("i", sqlite3_backup_remaining(self->backup));
}
static PyGetSetDef pysqlite_backup_getset[] = {
{"remaining", (getter)pysqlite_backup_get_remaining, (setter)0},
{"pagecount", (getter)pysqlite_backup_get_pagecount, (setter)0},
{NULL}
};
static PyMethodDef pysqlite_backup_methods[] = {
{"step", (PyCFunction)pysqlite_backup_step, METH_VARARGS,
PyDoc_STR("Copy pages to backup database.")},
{NULL, NULL}
};
PyTypeObject pysqlite_BackupType = {
PyVarObject_HEAD_INIT(NULL, 0)
MODULE_NAME ".Backup", /* tp_name */
sizeof(pysqlite_Backup), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)pysqlite_backup_dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT, /* tp_flags */
0, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
pysqlite_backup_methods, /* tp_methods */
0, /* tp_members */
pysqlite_backup_getset, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)0, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
0 /* tp_free */
};
extern int pysqlite_backup_setup_types(void)
{
pysqlite_BackupType.tp_new = PyType_GenericNew;
return PyType_Ready(&pysqlite_BackupType);
}