Merge from trunk

[plcapi.git] / trunk / psycopg2 / psycopg / typecast_basic.c

diff --git a/trunk/psycopg2/psycopg/typecast_basic.c b/trunk/psycopg2/psycopg/typecast_basic.c
new file mode 100644 (file)
index 0000000..e9ac7f4
--- /dev/null
+++ b/trunk/psycopg2/psycopg/typecast_basic.c
@@ -0,0 +1,141 @@
+/* pgcasts_basic.c - basic typecasting functions to python types
+ *
+ * Copyright (C) 2001-2003 Federico Di Gregorio <fog@debian.org>
+ *
+ * This file is part of the psycopg module.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/** INTEGER - cast normal integers (4 bytes) to python int **/
+
+static PyObject *
+typecast_INTEGER_cast(char *s, int len, PyObject *curs)
+{
+    char buffer[12];
+    
+    if (s == NULL) {Py_INCREF(Py_None); return Py_None;}
+    if (s[len] != '\0') {
+        strncpy(buffer, s, len); buffer[len] = '\0';
+        s = buffer;
+    }
+    return PyInt_FromString(s, NULL, 0);
+}
+
+/** LONGINTEGER - cast long integers (8 bytes) to python long **/
+
+static PyObject *
+typecast_LONGINTEGER_cast(char *s, int len, PyObject *curs)
+{
+    char buffer[24];
+    
+    if (s == NULL) {Py_INCREF(Py_None); return Py_None;}
+    if (s[len] != '\0') {
+        strncpy(buffer, s, len); buffer[len] = '\0';
+        s = buffer;
+    }
+    return PyLong_FromString(s, NULL, 0);
+}
+
+/** FLOAT - cast floating point numbers to python float **/
+
+static PyObject *
+typecast_FLOAT_cast(char *s, int len, PyObject *curs)
+{
+    PyObject *str = NULL, *flo = NULL;
+    char *pend;
+    
+    if (s == NULL) {Py_INCREF(Py_None); return Py_None;}
+    str = PyString_FromStringAndSize(s, len);
+    flo = PyFloat_FromString(str, &pend);
+    Py_DECREF(str);
+    return flo;
+}
+
+/** STRING - cast strings of any type to python string **/
+
+static PyObject *
+typecast_STRING_cast(char *s, int len, PyObject *curs)
+{
+    if (s == NULL) {Py_INCREF(Py_None); return Py_None;}
+    return PyString_FromStringAndSize(s, len);
+}
+
+/** UNICODE - cast strings of any type to a python unicode object **/
+
+static PyObject *
+typecast_UNICODE_cast(char *s, int len, PyObject *curs)
+{
+    PyObject *enc;
+
+    if (s == NULL) {Py_INCREF(Py_None); return Py_None;}
+
+    enc = PyDict_GetItemString(psycoEncodings,
+                               ((cursorObject*)curs)->conn->encoding);
+    if (enc) {
+        return PyUnicode_Decode(s, len, PyString_AsString(enc), NULL);
+    }
+    else {
+       PyErr_Format(InterfaceError,
+                    "can't decode into unicode string from %s",
+                    ((cursorObject*)curs)->conn->encoding);
+       return NULL; 
+    }
+}
+
+/** BOOLEAN - cast boolean value into right python object **/
+
+static PyObject *
+typecast_BOOLEAN_cast(char *s, int len, PyObject *curs)
+{
+    PyObject *res;
+
+    if (s == NULL) {Py_INCREF(Py_None); return Py_None;}
+
+    if (s[0] == 't')
+        res = Py_True;
+    else
+        res = Py_False;
+
+    Py_INCREF(res);
+    return res;
+}
+
+/** DECIMAL - cast any kind of number into a Python Decimal object **/
+
+#ifdef HAVE_DECIMAL
+static PyObject *
+typecast_DECIMAL_cast(char *s, int len, PyObject *curs)
+{
+    PyObject *res = NULL;
+    char *buffer;
+    
+    if (s == NULL) {Py_INCREF(Py_None); return Py_None;}
+
+    if ((buffer = PyMem_Malloc(len+1)) == NULL)
+        PyErr_NoMemory();
+    strncpy(buffer, s, len); buffer[len] = '\0';
+    res = PyObject_CallFunction(decimalType, "s", buffer);
+    PyMem_Free(buffer);
+
+    return res;
+}
+#else
+#define typecast_DECIMAL_cast  typecast_FLOAT_cast
+#endif
+     
+/* some needed aliases */
+#define typecast_NUMBER_cast   typecast_FLOAT_cast
+#define typecast_ROWID_cast    typecast_INTEGER_cast