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/* utils.c - miscellaneous utility functions
*
* Copyright (C) 2008-2010 Federico Di Gregorio <fog@debian.org>
*
* This file is part of psycopg.
*
* psycopg2 is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* In addition, as a special exception, the copyright holders give
* permission to link this program with the OpenSSL library (or with
* modified versions of OpenSSL that use the same license as OpenSSL),
* and distribute linked combinations including the two.
*
* You must obey the GNU Lesser General Public License in all respects for
* all of the code used other than OpenSSL.
*
* psycopg2 is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*/
#define PSYCOPG_MODULE
#include "psycopg/psycopg.h"
#include "psycopg/connection.h"
#include "psycopg/pgtypes.h"
#include <string.h>
#include <stdlib.h>
char *
psycopg_escape_string(PyObject *obj, const char *from, Py_ssize_t len,
char *to, Py_ssize_t *tolen)
{
Py_ssize_t ql;
connectionObject *conn = (connectionObject*)obj;
int eq = (conn && (conn->equote)) ? 1 : 0;
if (len == 0)
len = strlen(from);
if (to == NULL) {
to = (char *)PyMem_Malloc((len * 2 + 4) * sizeof(char));
if (to == NULL)
return NULL;
}
{
#if PG_VERSION_HEX >= 0x080104
int err;
if (conn && conn->pgconn)
ql = PQescapeStringConn(conn->pgconn, to+eq+1, from, len, &err);
else
#endif
ql = PQescapeString(to+eq+1, from, len);
}
if (eq)
to[0] = 'E';
to[eq] = '\'';
to[ql+eq+1] = '\'';
to[ql+eq+2] = '\0';
if (tolen)
*tolen = ql+eq+2;
return to;
}
/* Duplicate a string.
*
* Allocate a new buffer on the Python heap containing the new string.
* 'len' is optional: if 0 the length is calculated.
*
* Return NULL and set an exception in case of error.
*/
char *
psycopg_strdup(const char *from, Py_ssize_t len)
{
char *rv;
if (!len) { len = strlen(from); }
if (!(rv = PyMem_Malloc(len + 1))) {
PyErr_NoMemory();
return NULL;
}
strcpy(rv, from);
return rv;
}
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