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130 lines
4 KiB
C
130 lines
4 KiB
C
/* util.c - various utility functions
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*
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* Copyright (C) 2005-2010 Gerhard Häring <gh@ghaering.de>
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*
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* This file is part of pysqlite.
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*/
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#include "module.h"
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#include "connection.h"
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int pysqlite_step(sqlite3_stmt* statement, pysqlite_Connection* connection)
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{
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int rc;
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if (statement == NULL) {
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/* this is a workaround for SQLite 3.5 and later. it now apparently
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* returns NULL for "no-operation" statements */
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rc = SQLITE_OK;
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} else {
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Py_BEGIN_ALLOW_THREADS
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rc = sqlite3_step(statement);
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Py_END_ALLOW_THREADS
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}
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return rc;
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}
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/**
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* Checks the SQLite error code and sets the appropriate DB-API exception.
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* Returns the error code (0 means no error occurred).
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*/
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int _pysqlite_seterror(sqlite3* db, sqlite3_stmt* st)
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{
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int errorcode = sqlite3_errcode(db);
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switch (errorcode)
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{
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case SQLITE_OK:
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PyErr_Clear();
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break;
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case SQLITE_INTERNAL:
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case SQLITE_NOTFOUND:
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PyErr_SetString(pysqlite_InternalError, sqlite3_errmsg(db));
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break;
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case SQLITE_NOMEM:
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(void)PyErr_NoMemory();
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break;
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case SQLITE_ERROR:
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case SQLITE_PERM:
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case SQLITE_ABORT:
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case SQLITE_BUSY:
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case SQLITE_LOCKED:
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case SQLITE_READONLY:
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case SQLITE_INTERRUPT:
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case SQLITE_IOERR:
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case SQLITE_FULL:
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case SQLITE_CANTOPEN:
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case SQLITE_PROTOCOL:
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case SQLITE_EMPTY:
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case SQLITE_SCHEMA:
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PyErr_SetString(pysqlite_OperationalError, sqlite3_errmsg(db));
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break;
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case SQLITE_CORRUPT:
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PyErr_SetString(pysqlite_DatabaseError, sqlite3_errmsg(db));
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break;
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case SQLITE_TOOBIG:
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PyErr_SetString(pysqlite_DataError, sqlite3_errmsg(db));
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break;
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case SQLITE_CONSTRAINT:
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case SQLITE_MISMATCH:
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PyErr_SetString(pysqlite_IntegrityError, sqlite3_errmsg(db));
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break;
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case SQLITE_MISUSE:
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PyErr_SetString(pysqlite_ProgrammingError, sqlite3_errmsg(db));
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break;
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default:
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PyErr_SetString(pysqlite_DatabaseError, sqlite3_errmsg(db));
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break;
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}
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return errorcode;
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}
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#ifdef WORDS_BIGENDIAN
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# define IS_LITTLE_ENDIAN 0
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#else
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# define IS_LITTLE_ENDIAN 1
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#endif
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sqlite_int64
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_pysqlite_long_as_int64(PyObject * py_val)
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{
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int overflow;
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long long value = PyLong_AsLongLongAndOverflow(py_val, &overflow);
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if (value == -1 && PyErr_Occurred())
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return -1;
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if (!overflow) {
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# if SIZEOF_LONG_LONG > 8
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if (-0x8000000000000000LL <= value && value <= 0x7FFFFFFFFFFFFFFFLL)
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# endif
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return value;
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}
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else if (sizeof(value) < sizeof(sqlite_int64)) {
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sqlite_int64 int64val;
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if (_PyLong_AsByteArray((PyLongObject *)py_val,
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(unsigned char *)&int64val, sizeof(int64val),
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IS_LITTLE_ENDIAN, 1 /* signed */) >= 0) {
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return int64val;
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}
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}
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PyErr_SetString(PyExc_OverflowError,
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"Python int too large to convert to SQLite INTEGER");
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return -1;
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}
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