cpython/Modules/_sqlite/module.c at 3.8 · python/cpython · GitHub

History

474 lines (402 loc) · 14.7 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

/* module.c - the module itself

* 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 "connection.h"

#include "statement.h"

#include "cursor.h"

#include "cache.h"

#include "prepare_protocol.h"

#include "microprotocols.h"

#include "row.h"

#if SQLITE_VERSION_NUMBER >= 3003003

#define HAVE_SHARED_CACHE

#endif

/* static objects at module-level */

PyObject *pysqlite_Error = NULL;

PyObject *pysqlite_Warning = NULL;

PyObject *pysqlite_InterfaceError = NULL;

PyObject *pysqlite_DatabaseError = NULL;

PyObject *pysqlite_InternalError = NULL;

PyObject *pysqlite_OperationalError = NULL;

PyObject *pysqlite_ProgrammingError = NULL;

PyObject *pysqlite_IntegrityError = NULL;

PyObject *pysqlite_DataError = NULL;

PyObject *pysqlite_NotSupportedError = NULL;

PyObject* _pysqlite_converters = NULL;

int _pysqlite_enable_callback_tracebacks = 0;

int pysqlite_BaseTypeAdapted = 0;

static PyObject* module_connect(PyObject* self, PyObject* args, PyObject*

kwargs)

{

/* Python seems to have no way of extracting a single keyword-arg at

* C-level, so this code is redundant with the one in connection_init in

* connection.c and must always be copied from there ... */

static char *kwlist[] = {

"database", "timeout", "detect_types", "isolation_level",

"check_same_thread", "factory", "cached_statements", "uri",

NULL

};

PyObject* database;

int detect_types = 0;

PyObject* isolation_level;

PyObject* factory = NULL;

int check_same_thread = 1;

int cached_statements;

int uri = 0;

double timeout = 5.0;

if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|diOiOip", kwlist,

&database, &timeout, &detect_types,

&isolation_level, &check_same_thread,

&factory, &cached_statements, &uri))

{

return NULL;

}

if (factory == NULL) {

factory = (PyObject*)&pysqlite_ConnectionType;

}

return PyObject_Call(factory, args, kwargs);

}

PyDoc_STRVAR(module_connect_doc,

"connect(database[, timeout, detect_types, isolation_level,\n\

check_same_thread, factory, cached_statements, uri])\n\

\n\

Opens a connection to the SQLite database file *database*. You can use\n\

\":memory:\" to open a database connection to a database that resides in\n\

RAM instead of on disk.");

static PyObject* module_complete(PyObject* self, PyObject* args, PyObject*

kwargs)

{

static char *kwlist[] = {"statement", NULL, NULL};

char* statement;

PyObject* result;

if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", kwlist, &statement))

{

return NULL;

}

if (sqlite3_complete(statement)) {

result = Py_True;

} else {

result = Py_False;

}

Py_INCREF(result);

return result;

}

PyDoc_STRVAR(module_complete_doc,

"complete_statement(sql)\n\

\n\

Checks if a string contains a complete SQL statement. Non-standard.");

#ifdef HAVE_SHARED_CACHE

static PyObject* module_enable_shared_cache(PyObject* self, PyObject* args, PyObject*

kwargs)

{

static char *kwlist[] = {"do_enable", NULL, NULL};

int do_enable;

int rc;

if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i", kwlist, &do_enable))

{

return NULL;

}

rc = sqlite3_enable_shared_cache(do_enable);

if (rc != SQLITE_OK) {

PyErr_SetString(pysqlite_OperationalError, "Changing the shared_cache flag failed");

return NULL;

} else {

Py_RETURN_NONE;

}

PyDoc_STRVAR(module_enable_shared_cache_doc,

"enable_shared_cache(do_enable)\n\

\n\

Enable or disable shared cache mode for the calling thread.\n\

Experimental/Non-standard.");

#endif /* HAVE_SHARED_CACHE */

static PyObject* module_register_adapter(PyObject* self, PyObject* args)

{

PyTypeObject* type;

PyObject* caster;

int rc;

if (!PyArg_ParseTuple(args, "OO", &type, &caster)) {

return NULL;

}

/* a basic type is adapted; there's a performance optimization if that's not the case

* (99 % of all usages) */

if (type == &PyLong_Type || type == &PyFloat_Type

|| type == &PyUnicode_Type || type == &PyByteArray_Type) {

pysqlite_BaseTypeAdapted = 1;

}

rc = pysqlite_microprotocols_add(type, (PyObject*)&pysqlite_PrepareProtocolType, caster);

if (rc == -1)

return NULL;

Py_RETURN_NONE;

}

PyDoc_STRVAR(module_register_adapter_doc,

"register_adapter(type, callable)\n\

\n\

Registers an adapter with pysqlite's adapter registry. Non-standard.");

static PyObject* module_register_converter(PyObject* self, PyObject* args)

{

PyObject* orig_name;

PyObject* name = NULL;

PyObject* callable;

PyObject* retval = NULL;

_Py_IDENTIFIER(upper);

if (!PyArg_ParseTuple(args, "UO", &orig_name, &callable)) {

return NULL;

}

/* convert the name to upper case */

name = _PyObject_CallMethodId(orig_name, &PyId_upper, NULL);

if (!name) {

goto error;

}

if (PyDict_SetItem(_pysqlite_converters, name, callable) != 0) {

goto error;

}

Py_INCREF(Py_None);

retval = Py_None;

error:

Py_XDECREF(name);

return retval;

}

PyDoc_STRVAR(module_register_converter_doc,

"register_converter(typename, callable)\n\

\n\

Registers a converter with pysqlite. Non-standard.");

static PyObject* enable_callback_tracebacks(PyObject* self, PyObject* args)

{

if (!PyArg_ParseTuple(args, "i", &_pysqlite_enable_callback_tracebacks)) {

return NULL;

}

Py_RETURN_NONE;

}

PyDoc_STRVAR(enable_callback_tracebacks_doc,

"enable_callback_tracebacks(flag)\n\

\n\

Enable or disable callback functions throwing errors to stderr.");

static void converters_init(PyObject* dict)

{

_pysqlite_converters = PyDict_New();

if (!_pysqlite_converters) {

return;

}

PyDict_SetItemString(dict, "converters", _pysqlite_converters);

}

static PyMethodDef module_methods[] = {

{"connect", (PyCFunction)(void(*)(void))module_connect,

METH_VARARGS | METH_KEYWORDS, module_connect_doc},

{"complete_statement", (PyCFunction)(void(*)(void))module_complete,

METH_VARARGS | METH_KEYWORDS, module_complete_doc},

#ifdef HAVE_SHARED_CACHE

{"enable_shared_cache", (PyCFunction)(void(*)(void))module_enable_shared_cache,

METH_VARARGS | METH_KEYWORDS, module_enable_shared_cache_doc},

#endif

{"register_adapter", (PyCFunction)module_register_adapter,

METH_VARARGS, module_register_adapter_doc},

{"register_converter", (PyCFunction)module_register_converter,

METH_VARARGS, module_register_converter_doc},

{"adapt", (PyCFunction)pysqlite_adapt, METH_VARARGS,

pysqlite_adapt_doc},

{"enable_callback_tracebacks", (PyCFunction)enable_callback_tracebacks,

METH_VARARGS, enable_callback_tracebacks_doc},

{NULL, NULL}

};

struct _IntConstantPair {

const char *constant_name;

int constant_value;

};

typedef struct _IntConstantPair IntConstantPair;

static const IntConstantPair _int_constants[] = {

{"PARSE_DECLTYPES", PARSE_DECLTYPES},

{"PARSE_COLNAMES", PARSE_COLNAMES},

{"SQLITE_OK", SQLITE_OK},

{"SQLITE_DENY", SQLITE_DENY},

{"SQLITE_IGNORE", SQLITE_IGNORE},

{"SQLITE_CREATE_INDEX", SQLITE_CREATE_INDEX},

{"SQLITE_CREATE_TABLE", SQLITE_CREATE_TABLE},

{"SQLITE_CREATE_TEMP_INDEX", SQLITE_CREATE_TEMP_INDEX},

{"SQLITE_CREATE_TEMP_TABLE", SQLITE_CREATE_TEMP_TABLE},

{"SQLITE_CREATE_TEMP_TRIGGER", SQLITE_CREATE_TEMP_TRIGGER},

{"SQLITE_CREATE_TEMP_VIEW", SQLITE_CREATE_TEMP_VIEW},

{"SQLITE_CREATE_TRIGGER", SQLITE_CREATE_TRIGGER},

{"SQLITE_CREATE_VIEW", SQLITE_CREATE_VIEW},

{"SQLITE_DELETE", SQLITE_DELETE},

{"SQLITE_DROP_INDEX", SQLITE_DROP_INDEX},

{"SQLITE_DROP_TABLE", SQLITE_DROP_TABLE},

{"SQLITE_DROP_TEMP_INDEX", SQLITE_DROP_TEMP_INDEX},

{"SQLITE_DROP_TEMP_TABLE", SQLITE_DROP_TEMP_TABLE},

{"SQLITE_DROP_TEMP_TRIGGER", SQLITE_DROP_TEMP_TRIGGER},

{"SQLITE_DROP_TEMP_VIEW", SQLITE_DROP_TEMP_VIEW},

{"SQLITE_DROP_TRIGGER", SQLITE_DROP_TRIGGER},

{"SQLITE_DROP_VIEW", SQLITE_DROP_VIEW},

{"SQLITE_INSERT", SQLITE_INSERT},

{"SQLITE_PRAGMA", SQLITE_PRAGMA},

{"SQLITE_READ", SQLITE_READ},

{"SQLITE_SELECT", SQLITE_SELECT},

{"SQLITE_TRANSACTION", SQLITE_TRANSACTION},

{"SQLITE_UPDATE", SQLITE_UPDATE},

{"SQLITE_ATTACH", SQLITE_ATTACH},

{"SQLITE_DETACH", SQLITE_DETACH},

#if SQLITE_VERSION_NUMBER >= 3002001

{"SQLITE_ALTER_TABLE", SQLITE_ALTER_TABLE},

{"SQLITE_REINDEX", SQLITE_REINDEX},

#endif

#if SQLITE_VERSION_NUMBER >= 3003000

{"SQLITE_ANALYZE", SQLITE_ANALYZE},

#endif

#if SQLITE_VERSION_NUMBER >= 3003007

{"SQLITE_CREATE_VTABLE", SQLITE_CREATE_VTABLE},

{"SQLITE_DROP_VTABLE", SQLITE_DROP_VTABLE},

#endif

#if SQLITE_VERSION_NUMBER >= 3003008

{"SQLITE_FUNCTION", SQLITE_FUNCTION},

#endif

#if SQLITE_VERSION_NUMBER >= 3006008

{"SQLITE_SAVEPOINT", SQLITE_SAVEPOINT},

#endif

#if SQLITE_VERSION_NUMBER >= 3008003

{"SQLITE_RECURSIVE", SQLITE_RECURSIVE},

#endif

#if SQLITE_VERSION_NUMBER >= 3006011

{"SQLITE_DONE", SQLITE_DONE},

#endif

{(char*)NULL, 0}

};

static struct PyModuleDef _sqlite3module = {

PyModuleDef_HEAD_INIT,

"_sqlite3",

NULL,

-1,

module_methods,

NULL,

NULL

};

PyMODINIT_FUNC PyInit__sqlite3(void)

{

PyObject *module, *dict;

PyObject *tmp_obj;

int i;

module = PyModule_Create(&_sqlite3module);

if (!module ||

(pysqlite_row_setup_types() < 0) ||

(pysqlite_cursor_setup_types() < 0) ||

(pysqlite_connection_setup_types() < 0) ||

(pysqlite_cache_setup_types() < 0) ||

(pysqlite_statement_setup_types() < 0) ||

(pysqlite_prepare_protocol_setup_types() < 0)

) {

Py_XDECREF(module);

return NULL;

}

Py_INCREF(&pysqlite_ConnectionType);

PyModule_AddObject(module, "Connection", (PyObject*) &pysqlite_ConnectionType);

Py_INCREF(&pysqlite_CursorType);

PyModule_AddObject(module, "Cursor", (PyObject*) &pysqlite_CursorType);

Py_INCREF(&pysqlite_PrepareProtocolType);

PyModule_AddObject(module, "PrepareProtocol", (PyObject*) &pysqlite_PrepareProtocolType);

Py_INCREF(&pysqlite_RowType);

PyModule_AddObject(module, "Row", (PyObject*) &pysqlite_RowType);

if (!(dict = PyModule_GetDict(module))) {

goto error;

}

/*** Create DB-API Exception hierarchy */

if (!(pysqlite_Error = PyErr_NewException(MODULE_NAME ".Error", PyExc_Exception, NULL))) {

goto error;

}

PyDict_SetItemString(dict, "Error", pysqlite_Error);

if (!(pysqlite_Warning = PyErr_NewException(MODULE_NAME ".Warning", PyExc_Exception, NULL))) {

goto error;

}

PyDict_SetItemString(dict, "Warning", pysqlite_Warning);

/* Error subclasses */

if (!(pysqlite_InterfaceError = PyErr_NewException(MODULE_NAME ".InterfaceError", pysqlite_Error, NULL))) {

goto error;

}

PyDict_SetItemString(dict, "InterfaceError", pysqlite_InterfaceError);

if (!(pysqlite_DatabaseError = PyErr_NewException(MODULE_NAME ".DatabaseError", pysqlite_Error, NULL))) {

goto error;

}

PyDict_SetItemString(dict, "DatabaseError", pysqlite_DatabaseError);

/* pysqlite_DatabaseError subclasses */

if (!(pysqlite_InternalError = PyErr_NewException(MODULE_NAME ".InternalError", pysqlite_DatabaseError, NULL))) {

goto error;

}

PyDict_SetItemString(dict, "InternalError", pysqlite_InternalError);

if (!(pysqlite_OperationalError = PyErr_NewException(MODULE_NAME ".OperationalError", pysqlite_DatabaseError, NULL))) {

goto error;

}

PyDict_SetItemString(dict, "OperationalError", pysqlite_OperationalError);

if (!(pysqlite_ProgrammingError = PyErr_NewException(MODULE_NAME ".ProgrammingError", pysqlite_DatabaseError, NULL))) {

goto error;

}

PyDict_SetItemString(dict, "ProgrammingError", pysqlite_ProgrammingError);

if (!(pysqlite_IntegrityError = PyErr_NewException(MODULE_NAME ".IntegrityError", pysqlite_DatabaseError,NULL))) {

goto error;

}

PyDict_SetItemString(dict, "IntegrityError", pysqlite_IntegrityError);

if (!(pysqlite_DataError = PyErr_NewException(MODULE_NAME ".DataError", pysqlite_DatabaseError, NULL))) {

goto error;

}

PyDict_SetItemString(dict, "DataError", pysqlite_DataError);

if (!(pysqlite_NotSupportedError = PyErr_NewException(MODULE_NAME ".NotSupportedError", pysqlite_DatabaseError, NULL))) {

goto error;

}

PyDict_SetItemString(dict, "NotSupportedError", pysqlite_NotSupportedError);

/* In Python 2.x, setting Connection.text_factory to

OptimizedUnicode caused Unicode objects to be returned for

non-ASCII data and bytestrings to be returned for ASCII data.

Now OptimizedUnicode is an alias for str, so it has no

effect. */

Py_INCREF((PyObject*)&PyUnicode_Type);

PyDict_SetItemString(dict, "OptimizedUnicode", (PyObject*)&PyUnicode_Type);

/* Set integer constants */

for (i = 0; _int_constants[i].constant_name != NULL; i++) {

tmp_obj = PyLong_FromLong(_int_constants[i].constant_value);

if (!tmp_obj) {

goto error;

}

PyDict_SetItemString(dict, _int_constants[i].constant_name, tmp_obj);

Py_DECREF(tmp_obj);

}

if (!(tmp_obj = PyUnicode_FromString(PYSQLITE_VERSION))) {

goto error;

}

PyDict_SetItemString(dict, "version", tmp_obj);

Py_DECREF(tmp_obj);

if (!(tmp_obj = PyUnicode_FromString(sqlite3_libversion()))) {

goto error;

}

PyDict_SetItemString(dict, "sqlite_version", tmp_obj);

Py_DECREF(tmp_obj);

/* initialize microprotocols layer */

pysqlite_microprotocols_init(dict);

/* initialize the default converters */

converters_init(dict);

error:

if (PyErr_Occurred())

{

PyErr_SetString(PyExc_ImportError, MODULE_NAME ": init failed");

Py_DECREF(module);

module = NULL;

}

return module;

}

cpython/Modules/_sqlite/module.c at 3.8 · python/cpython · GitHub

Uh oh!

Uh oh!

cpython/Modules/_sqlite/module.c at 3.8 · python/cpython · GitHub

Uh oh!

Uh oh!

Expand file tree

Breadcrumbs

module.c

Latest commit

History

Breadcrumbs

module.c

File metadata and controls