symbian-qemu-0.9.1-12/python-2.6.1/Modules/_sqlite/row.c
author johnathan.white@2718R8BGH51.accenture.com
Mon, 08 Mar 2010 18:45:03 +0000
changeset 46 b6935a90ca64
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Modify framebuffer and NGA framebuffer to read screen size from board model dtb file. Optimise memory usuage of frame buffer Add example minigui application with hooks to profiler (which writes results to S:\). Modified NGA framebuffer to run its own dfc queue at high priority

/* row.c - an enhanced tuple for database rows
 *
 * Copyright (C) 2005-2006 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 "row.h"
#include "cursor.h"
#include "sqlitecompat.h"

void pysqlite_row_dealloc(pysqlite_Row* self)
{
    Py_XDECREF(self->data);
    Py_XDECREF(self->description);

    Py_TYPE(self)->tp_free((PyObject*)self);
}

int pysqlite_row_init(pysqlite_Row* self, PyObject* args, PyObject* kwargs)
{
    PyObject* data;
    pysqlite_Cursor* cursor;

    self->data = 0;
    self->description = 0;

    if (!PyArg_ParseTuple(args, "OO", &cursor, &data)) {
        return -1;
    }

    if (!PyObject_IsInstance((PyObject*)cursor, (PyObject*)&pysqlite_CursorType)) {
        PyErr_SetString(PyExc_TypeError, "instance of cursor required for first argument");
        return -1;
    }

    if (!PyTuple_Check(data)) {
        PyErr_SetString(PyExc_TypeError, "tuple required for second argument");
        return -1;
    }

    Py_INCREF(data);
    self->data = data;

    Py_INCREF(cursor->description);
    self->description = cursor->description;

    return 0;
}

PyObject* pysqlite_row_subscript(pysqlite_Row* self, PyObject* idx)
{
    long _idx;
    char* key;
    int nitems, i;
    char* compare_key;

    char* p1;
    char* p2;

    PyObject* item;

    if (PyInt_Check(idx)) {
        _idx = PyInt_AsLong(idx);
        item = PyTuple_GetItem(self->data, _idx);
        Py_XINCREF(item);
        return item;
    } else if (PyLong_Check(idx)) {
        _idx = PyLong_AsLong(idx);
        item = PyTuple_GetItem(self->data, _idx);
        Py_XINCREF(item);
        return item;
    } else if (PyString_Check(idx)) {
        key = PyString_AsString(idx);

        nitems = PyTuple_Size(self->description);

        for (i = 0; i < nitems; i++) {
            compare_key = PyString_AsString(PyTuple_GET_ITEM(PyTuple_GET_ITEM(self->description, i), 0));
            if (!compare_key) {
                return NULL;
            }

            p1 = key;
            p2 = compare_key;

            while (1) {
                if ((*p1 == (char)0) || (*p2 == (char)0)) {
                    break;
                }

                if ((*p1 | 0x20) != (*p2 | 0x20)) {
                    break;
                }

                p1++;
                p2++;
            }

            if ((*p1 == (char)0) && (*p2 == (char)0)) {
                /* found item */
                item = PyTuple_GetItem(self->data, i);
                Py_INCREF(item);
                return item;
            }

        }

        PyErr_SetString(PyExc_IndexError, "No item with that key");
        return NULL;
    } else if (PySlice_Check(idx)) {
        PyErr_SetString(PyExc_ValueError, "slices not implemented, yet");
        return NULL;
    } else {
        PyErr_SetString(PyExc_IndexError, "Index must be int or string");
        return NULL;
    }
}

Py_ssize_t pysqlite_row_length(pysqlite_Row* self, PyObject* args, PyObject* kwargs)
{
    return PyTuple_GET_SIZE(self->data);
}

PyObject* pysqlite_row_keys(pysqlite_Row* self, PyObject* args, PyObject* kwargs)
{
    PyObject* list;
    int nitems, i;

    list = PyList_New(0);
    if (!list) {
        return NULL;
    }
    nitems = PyTuple_Size(self->description);

    for (i = 0; i < nitems; i++) {
        if (PyList_Append(list, PyTuple_GET_ITEM(PyTuple_GET_ITEM(self->description, i), 0)) != 0) {
            Py_DECREF(list);
            return NULL;
        }
    }

    return list;
}

static int pysqlite_row_print(pysqlite_Row* self, FILE *fp, int flags)
{
    return (&PyTuple_Type)->tp_print(self->data, fp, flags);
}

static PyObject* pysqlite_iter(pysqlite_Row* self)
{
    return PyObject_GetIter(self->data);
}

static long pysqlite_row_hash(pysqlite_Row *self)
{
    return PyObject_Hash(self->description) ^ PyObject_Hash(self->data);
}

static PyObject* pysqlite_row_richcompare(pysqlite_Row *self, PyObject *_other, int opid)
{
    if (opid != Py_EQ && opid != Py_NE) {
	Py_INCREF(Py_NotImplemented);
	return Py_NotImplemented;
    }
    if (PyType_IsSubtype(Py_TYPE(_other), &pysqlite_RowType)) {
	pysqlite_Row *other = (pysqlite_Row *)_other;
	PyObject *res = PyObject_RichCompare(self->description, other->description, opid);
	if ((opid == Py_EQ && res == Py_True)
	    || (opid == Py_NE && res == Py_False)) {
	    Py_DECREF(res);
	    return PyObject_RichCompare(self->data, other->data, opid);
	}
    }
    Py_INCREF(Py_NotImplemented);
    return Py_NotImplemented;
}

PyMappingMethods pysqlite_row_as_mapping = {
    /* mp_length        */ (lenfunc)pysqlite_row_length,
    /* mp_subscript     */ (binaryfunc)pysqlite_row_subscript,
    /* mp_ass_subscript */ (objobjargproc)0,
};

static PyMethodDef pysqlite_row_methods[] = {
    {"keys", (PyCFunction)pysqlite_row_keys, METH_NOARGS,
        PyDoc_STR("Returns the keys of the row.")},
    {NULL, NULL}
};


PyTypeObject pysqlite_RowType = {
        PyVarObject_HEAD_INIT(NULL, 0)
        MODULE_NAME ".Row",                             /* tp_name */
        sizeof(pysqlite_Row),                           /* tp_basicsize */
        0,                                              /* tp_itemsize */
        (destructor)pysqlite_row_dealloc,               /* tp_dealloc */
        (printfunc)pysqlite_row_print,                  /* tp_print */
        0,                                              /* tp_getattr */
        0,                                              /* tp_setattr */
        0,                                              /* tp_compare */
        0,                                              /* tp_repr */
        0,                                              /* tp_as_number */
        0,                                              /* tp_as_sequence */
        0,                                              /* tp_as_mapping */
        (hashfunc)pysqlite_row_hash,                    /* tp_hash */
        0,                                              /* tp_call */
        0,                                              /* tp_str */
        0,                                              /* tp_getattro */
        0,                                              /* tp_setattro */
        0,                                              /* tp_as_buffer */
        Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,         /* tp_flags */
        0,                                              /* tp_doc */
        (traverseproc)0,                                /* tp_traverse */
        0,                                              /* tp_clear */
        (richcmpfunc)pysqlite_row_richcompare,          /* tp_richcompare */
        0,                                              /* tp_weaklistoffset */
        (getiterfunc)pysqlite_iter,                     /* tp_iter */
        0,                                              /* tp_iternext */
        pysqlite_row_methods,                           /* tp_methods */
        0,                                              /* tp_members */
        0,                                              /* tp_getset */
        0,                                              /* tp_base */
        0,                                              /* tp_dict */
        0,                                              /* tp_descr_get */
        0,                                              /* tp_descr_set */
        0,                                              /* tp_dictoffset */
        (initproc)pysqlite_row_init,                    /* tp_init */
        0,                                              /* tp_alloc */
        0,                                              /* tp_new */
        0                                               /* tp_free */
};

extern int pysqlite_row_setup_types(void)
{
    pysqlite_RowType.tp_new = PyType_GenericNew;
    pysqlite_RowType.tp_as_mapping = &pysqlite_row_as_mapping;
    return PyType_Ready(&pysqlite_RowType);
}