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/* utils.c - miscellaneous utility functions
*
*/
#include <Python.h>
#include <string.h>
#include "psycopg/config.h"
#include "psycopg/psycopg.h"
#include "psycopg/connection.h"
#include "psycopg/pgtypes.h"
#include "psycopg/pgversion.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;
}
#ifndef PSYCOPG_OWN_QUOTING
{
#if PG_MAJOR_VERSION > 8 || \
(PG_MAJOR_VERSION == 8 && PG_MINOR_VERSION > 1) || \
(PG_MAJOR_VERSION == 8 && PG_MINOR_VERSION == 1 && PG_PATCH_VERSION >= 4)
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);
}
#else
{
int i, j;
for (i=0, j=eq+1; i<len; i++) {
switch(from[i]) {
case '\'':
to[j++] = '\'';
to[j++] = '\'';
break;
case '\\':
to[j++] = '\\';
to[j++] = '\\';
break;
case '\0':
/* do nothing, embedded \0 are discarded */
break;
default:
to[j++] = from[i];
}
}
to[j] = '\0';
Dprintf("qstring_quote: to = %s", to);
ql = strlen(to);
}
#endif
if (eq)
to[0] = 'E';
to[eq] = '\'';
to[ql+eq+1] = '\'';
to[ql+eq+2] = '\0';
if (tolen)
*tolen = ql+eq+2;
return to;
}
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