AppPkg/Applications/Python/Python-2.7.2/Modules/_sqlite/util.c

   1 /* util.c - various utility functions
   2  *
   3  * Copyright (C) 2005-2010 Gerhard Häring <gh@ghaering.de>
   4  *
   5  * This file is part of pysqlite.
   6  *
   7  * This software is provided 'as-is', without any express or implied
   8  * warranty.  In no event will the authors be held liable for any damages
   9  * arising from the use of this software.
  10  *
  11  * Permission is granted to anyone to use this software for any purpose,
  12  * including commercial applications, and to alter it and redistribute it
  13  * freely, subject to the following restrictions:
  14  *
  15  * 1. The origin of this software must not be misrepresented; you must not
  16  *    claim that you wrote the original software. If you use this software
  17  *    in a product, an acknowledgment in the product documentation would be
  18  *    appreciated but is not required.
  19  * 2. Altered source versions must be plainly marked as such, and must not be
  20  *    misrepresented as being the original software.
  21  * 3. This notice may not be removed or altered from any source distribution.
  22  */
  23
  24 #include "module.h"
  25 #include "connection.h"
  26
  27 int pysqlite_step(sqlite3_stmt* statement, pysqlite_Connection* connection)
  28 {
  29     int rc;
  30
  31     if (statement == NULL) {
  32         /* this is a workaround for SQLite 3.5 and later. it now apparently
  33          * returns NULL for "no-operation" statements */
  34         rc = SQLITE_OK;
  35     } else {
  36         Py_BEGIN_ALLOW_THREADS
  37         rc = sqlite3_step(statement);
  38         Py_END_ALLOW_THREADS
  39     }
  40
  41     return rc;
  42 }
  43
  44 /**
  45  * Checks the SQLite error code and sets the appropriate DB-API exception.
  46  * Returns the error code (0 means no error occurred).
  47  */
  48 int _pysqlite_seterror(sqlite3* db, sqlite3_stmt* st)
  49 {
  50     int errorcode;
  51
  52     /* SQLite often doesn't report anything useful, unless you reset the statement first */
  53     if (st != NULL) {
  54         (void)sqlite3_reset(st);
  55     }
  56
  57     errorcode = sqlite3_errcode(db);
  58
  59     switch (errorcode)
  60     {
  61         case SQLITE_OK:
  62             PyErr_Clear();
  63             break;
  64         case SQLITE_INTERNAL:
  65         case SQLITE_NOTFOUND:
  66             PyErr_SetString(pysqlite_InternalError, sqlite3_errmsg(db));
  67             break;
  68         case SQLITE_NOMEM:
  69             (void)PyErr_NoMemory();
  70             break;
  71         case SQLITE_ERROR:
  72         case SQLITE_PERM:
  73         case SQLITE_ABORT:
  74         case SQLITE_BUSY:
  75         case SQLITE_LOCKED:
  76         case SQLITE_READONLY:
  77         case SQLITE_INTERRUPT:
  78         case SQLITE_IOERR:
  79         case SQLITE_FULL:
  80         case SQLITE_CANTOPEN:
  81         case SQLITE_PROTOCOL:
  82         case SQLITE_EMPTY:
  83         case SQLITE_SCHEMA:
  84             PyErr_SetString(pysqlite_OperationalError, sqlite3_errmsg(db));
  85             break;
  86         case SQLITE_CORRUPT:
  87             PyErr_SetString(pysqlite_DatabaseError, sqlite3_errmsg(db));
  88             break;
  89         case SQLITE_TOOBIG:
  90             PyErr_SetString(pysqlite_DataError, sqlite3_errmsg(db));
  91             break;
  92         case SQLITE_CONSTRAINT:
  93         case SQLITE_MISMATCH:
  94             PyErr_SetString(pysqlite_IntegrityError, sqlite3_errmsg(db));
  95             break;
  96         case SQLITE_MISUSE:
  97             PyErr_SetString(pysqlite_ProgrammingError, sqlite3_errmsg(db));
  98             break;
  99         default:
 100             PyErr_SetString(pysqlite_DatabaseError, sqlite3_errmsg(db));
 101             break;
 102     }
 103
 104     return errorcode;
 105 }
 106