1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
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
|
/* util.c - various utility functions
*
* Copyright (C) 2005-2010 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 "connection.h"
int
pysqlite_step(sqlite3_stmt *statement)
{
int rc;
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_step(statement);
Py_END_ALLOW_THREADS
return rc;
}
// Returns non-NULL if a new exception should be raised
static PyObject *
get_exception_class(pysqlite_state *state, int errorcode)
{
switch (errorcode) {
case SQLITE_OK:
PyErr_Clear();
return NULL;
case SQLITE_INTERNAL:
case SQLITE_NOTFOUND:
return state->InternalError;
case SQLITE_NOMEM:
return PyErr_NoMemory();
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:
return state->OperationalError;
case SQLITE_CORRUPT:
return state->DatabaseError;
case SQLITE_TOOBIG:
return state->DataError;
case SQLITE_CONSTRAINT:
case SQLITE_MISMATCH:
return state->IntegrityError;
case SQLITE_MISUSE:
return state->ProgrammingError;
case SQLITE_RANGE:
return state->InterfaceError;
default:
return state->DatabaseError;
}
}
static void
raise_exception(PyObject *type, int errcode, const char *errmsg)
{
PyObject *exc = NULL;
PyObject *args[] = { PyUnicode_FromString(errmsg), };
if (args[0] == NULL) {
goto exit;
}
exc = PyObject_Vectorcall(type, args, 1, NULL);
Py_DECREF(args[0]);
if (exc == NULL) {
goto exit;
}
PyObject *code = PyLong_FromLong(errcode);
if (code == NULL) {
goto exit;
}
int rc = PyObject_SetAttrString(exc, "sqlite_errorcode", code);
Py_DECREF(code);
if (rc < 0) {
goto exit;
}
const char *error_name = pysqlite_error_name(errcode);
PyObject *name;
if (error_name) {
name = PyUnicode_FromString(error_name);
}
else {
name = PyUnicode_InternFromString("unknown");
}
if (name == NULL) {
goto exit;
}
rc = PyObject_SetAttrString(exc, "sqlite_errorname", name);
Py_DECREF(name);
if (rc < 0) {
goto exit;
}
PyErr_SetObject(type, exc);
exit:
Py_XDECREF(exc);
}
/**
* Checks the SQLite error code and sets the appropriate DB-API exception.
* Returns the error code (0 means no error occurred).
*/
int
_pysqlite_seterror(pysqlite_state *state, sqlite3 *db)
{
int errorcode = sqlite3_errcode(db);
PyObject *exc_class = get_exception_class(state, errorcode);
if (exc_class == NULL) {
// No new exception need be raised; just pass the error code
return errorcode;
}
/* Create and set the exception. */
int extended_errcode = sqlite3_extended_errcode(db);
const char *errmsg = sqlite3_errmsg(db);
raise_exception(exc_class, extended_errcode, errmsg);
return extended_errcode;
}
#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;
}
|
