intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 130 insertions, 0 deletions

diff --git a/contrib/tools/python3/src/Modules/_sqlite/util.c b/contrib/tools/python3/src/Modules/_sqlite/util.c
new file mode 100644
index 00000000000..1dbabcdd94a
--- /dev/null
+++ b/contrib/tools/python3/src/Modules/_sqlite/util.c
@@ -0,0 +1,130 @@
+/* util.c - various utility functions
+ *
+ * Copyright (C) 2005-2010 Gerhard Häring <[email protected]>
+ *
+ * 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 "connection.h"
+
+int pysqlite_step(sqlite3_stmt* statement, pysqlite_Connection* connection)
+{
+    int rc;
+
+    if (statement == NULL) {
+        /* this is a workaround for SQLite 3.5 and later. it now apparently
+         * returns NULL for "no-operation" statements */
+        rc = SQLITE_OK;
+    } else {
+        Py_BEGIN_ALLOW_THREADS
+        rc = sqlite3_step(statement);
+        Py_END_ALLOW_THREADS
+    }
+
+    return rc;
+}
+
+/**
+ * Checks the SQLite error code and sets the appropriate DB-API exception.
+ * Returns the error code (0 means no error occurred).
+ */
+int _pysqlite_seterror(sqlite3* db, sqlite3_stmt* st)
+{
+    int errorcode = sqlite3_errcode(db);
+
+    switch (errorcode)
+    {
+        case SQLITE_OK:
+            PyErr_Clear();
+            break;
+        case SQLITE_INTERNAL:
+        case SQLITE_NOTFOUND:
+            PyErr_SetString(pysqlite_InternalError, sqlite3_errmsg(db));
+            break;
+        case SQLITE_NOMEM:
+            (void)PyErr_NoMemory();
+            break;
+        case SQLITE_ERROR:
+        case SQLITE_PERM:
+        case SQLITE_ABORT:
+        case SQLITE_BUSY:
+        case SQLITE_LOCKED:
+        case SQLITE_READONLY:
+        case SQLITE_INTERRUPT:
+        case SQLITE_IOERR:
+        case SQLITE_FULL:
+        case SQLITE_CANTOPEN:
+        case SQLITE_PROTOCOL:
+        case SQLITE_EMPTY:
+        case SQLITE_SCHEMA:
+            PyErr_SetString(pysqlite_OperationalError, sqlite3_errmsg(db));
+            break;
+        case SQLITE_CORRUPT:
+            PyErr_SetString(pysqlite_DatabaseError, sqlite3_errmsg(db));
+            break;
+        case SQLITE_TOOBIG:
+            PyErr_SetString(pysqlite_DataError, sqlite3_errmsg(db));
+            break;
+        case SQLITE_CONSTRAINT:
+        case SQLITE_MISMATCH:
+            PyErr_SetString(pysqlite_IntegrityError, sqlite3_errmsg(db));
+            break;
+        case SQLITE_MISUSE:
+            PyErr_SetString(pysqlite_ProgrammingError, sqlite3_errmsg(db));
+            break;
+        default:
+            PyErr_SetString(pysqlite_DatabaseError, sqlite3_errmsg(db));
+            break;
+    }
+
+    return errorcode;
+}
+
+#ifdef WORDS_BIGENDIAN
+# define IS_LITTLE_ENDIAN 0
+#else
+# define IS_LITTLE_ENDIAN 1
+#endif
+
+sqlite_int64
+_pysqlite_long_as_int64(PyObject * py_val)
+{
+    int overflow;
+    long long value = PyLong_AsLongLongAndOverflow(py_val, &overflow);
+    if (value == -1 && PyErr_Occurred())
+        return -1;
+    if (!overflow) {
+# if SIZEOF_LONG_LONG > 8
+        if (-0x8000000000000000LL <= value && value <= 0x7FFFFFFFFFFFFFFFLL)
+# endif
+            return value;
+    }
+    else if (sizeof(value) < sizeof(sqlite_int64)) {
+        sqlite_int64 int64val;
+        if (_PyLong_AsByteArray((PyLongObject *)py_val,
+                                (unsigned char *)&int64val, sizeof(int64val),
+                                IS_LITTLE_ENDIAN, 1 /* signed */) >= 0) {
+            return int64val;
+        }
+    }
+    PyErr_SetString(PyExc_OverflowError,
+                    "Python int too large to convert to SQLite INTEGER");
+    return -1;
+}