source: vbox/trunk/src/libs/xpcom18a4/python/src/PyIVariant.cpp

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is the Python XPCOM language bindings.
 *
 * The Initial Developer of the Original Code is
 * Mark Hammond.
 * Portions created by the Initial Developer are Copyright (C) 2000
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Mark Hammond <mhammond@skippinet.com.au> (original author)
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

// This code is part of the XPCOM extensions for Python.
//
// Written April 2002

#include "PyXPCOM_std.h"
#include "nsIVariant.h"

// Prevents us needing to use an nsIScriptableInputStream
// (and even that can't read binary data!!!)

static nsIVariant *GetI(PyObject *self) {
        nsIID iid = NS_GET_IID(nsIVariant);

        if (!Py_nsISupports::Check(self, iid)) {
                PyErr_SetString(PyExc_TypeError, "This object is not the correct interface");
                return NULL;
        }
        return (nsIVariant *)Py_nsISupports::GetI(self);
}

static PyObject *MyBool( PRBool v) {
        PyObject *ret = v ? Py_True : Py_False;
        Py_INCREF(ret);
        return ret;
}
static PyObject *MyChar( char c) {
#if PY_MAJOR_VERSION <= 2
        return PyString_FromStringAndSize(&c, 1);
#else
        return PyUnicode_FromStringAndSize(&c, 1);
#endif
}
static PyObject *MyUChar( PRUnichar c) {
        return PyObject_FromNSString( &c, 1);
}
static PyObject *MyUnicode( PRUnichar *p) {
        return PyObject_FromNSString(p);
}

#define GET_SIMPLE(Type, FuncGet, FuncConvert) \
static PyObject *FuncGet(PyObject *self, PyObject *args) { \
        nsIVariant *pI = GetI(self); \
        if (pI==NULL) return NULL; \
        if (!PyArg_ParseTuple(args, ":" #FuncGet)) return NULL; \
        Type t; \
        nsresult nr = pI->FuncGet(&t); \
        if (NS_FAILED(nr)) return PyXPCOM_BuildPyException(nr); \
        return FuncConvert(t); \
}

#define GET_ALLOCATED(Type, FuncGet, FuncConvert, FuncFree) \
static PyObject *FuncGet(PyObject *self, PyObject *args) { \
        nsIVariant *pI = GetI(self); \
        if (pI==NULL) return NULL; \
        if (!PyArg_ParseTuple(args, ":" #FuncGet)) return NULL; \
        Type t; \
        nsresult nr = pI->FuncGet(&t); \
        if (NS_FAILED(nr)) return PyXPCOM_BuildPyException(nr); \
        PyObject *ret = FuncConvert(t); \
        FuncFree(t); \
        return ret; \
}

#define GET_ALLOCATED_SIZE(Type, FuncGet, FuncConvert, FuncFree) \
static PyObject *FuncGet(PyObject *self, PyObject *args) { \
        nsIVariant *pI = GetI(self); \
        if (pI==NULL) return NULL; \
        if (!PyArg_ParseTuple(args, ":" #FuncGet)) return NULL; \
        Type t; PRUint32 size; \
        nsresult nr = pI->FuncGet(&size, &t); \
        if (NS_FAILED(nr)) return PyXPCOM_BuildPyException(nr); \
        PyObject *ret = FuncConvert(t, size); \
        FuncFree(t); \
        return ret; \
}

GET_SIMPLE(PRUint8, GetAsInt8, PyInt_FromLong)
GET_SIMPLE(PRUint8, GetAsUint8, PyInt_FromLong)
GET_SIMPLE(PRInt16, GetAsInt16, PyInt_FromLong)
GET_SIMPLE(PRUint16, GetAsUint16, PyInt_FromLong)
GET_SIMPLE(PRInt32, GetAsInt32, PyInt_FromLong)
GET_SIMPLE(PRUint32, GetAsUint32, PyInt_FromLong)
GET_SIMPLE(PRInt64, GetAsInt64, PyLong_FromLongLong)
GET_SIMPLE(PRUint64, GetAsUint64, PyLong_FromUnsignedLongLong)
GET_SIMPLE(float, GetAsFloat, PyFloat_FromDouble)
GET_SIMPLE(double, GetAsDouble, PyFloat_FromDouble)
GET_SIMPLE(PRBool, GetAsBool, MyBool)
GET_SIMPLE(char, GetAsChar, MyChar)
GET_SIMPLE(PRUnichar, GetAsWChar, MyUChar)
GET_SIMPLE(nsIID, GetAsID, Py_nsIID::PyObjectFromIID)

#if PY_MAJOR_VERSION <= 2
GET_ALLOCATED(char *, GetAsString, PyString_FromString, nsMemory::Free)
#else
GET_ALLOCATED(char *, GetAsString, PyUnicode_FromString, nsMemory::Free)
#endif
GET_ALLOCATED(PRUnichar *, GetAsWString, MyUnicode, nsMemory::Free)
#if PY_MAJOR_VERSION <= 2
GET_ALLOCATED_SIZE(char *, GetAsStringWithSize, PyString_FromStringAndSize, nsMemory::Free)
#else
GET_ALLOCATED_SIZE(char *, GetAsStringWithSize, PyUnicode_FromStringAndSize, nsMemory::Free)
#endif
GET_ALLOCATED_SIZE(PRUnichar *, GetAsWStringWithSize, PyObject_FromNSString, nsMemory::Free)

static PyObject *GetAsInterface(PyObject *self, PyObject *args) {
        nsIVariant *pI = GetI(self);
        if (pI==NULL) return NULL;
        if (!PyArg_ParseTuple(args, ":GetAsInterface")) return NULL;
        nsCOMPtr<nsISupports> p;
        nsIID *iid;
        nsresult nr = pI->GetAsInterface(&iid, getter_AddRefs(p));
        if (NS_FAILED(nr)) return PyXPCOM_BuildPyException(nr);
        return Py_nsISupports::PyObjectFromInterface(p, *iid);
}

static PyObject *GetAsISupports(PyObject *self, PyObject *args) {
        nsIVariant *pI = GetI(self);
        if (pI==NULL) return NULL;
        if (!PyArg_ParseTuple(args, ":GetAsInterface")) return NULL;
        nsCOMPtr<nsISupports> p;
        nsIID *iid;
        nsresult nr = pI->GetAsInterface(&iid, getter_AddRefs(p));
        if (NS_FAILED(nr)) return PyXPCOM_BuildPyException(nr);
        return Py_nsISupports::PyObjectFromInterface(p, *iid);
}

static PyObject *GetAsArray(PyObject *self, PyObject *args) {
        nsIVariant *pI = GetI(self);
        if (pI==NULL) return NULL;
        if (!PyArg_ParseTuple(args, ":GetAsArray")) return NULL;
        return PyObject_FromVariantArray((Py_nsISupports *)self, pI);
}

static PyObject *Get(PyObject *self, PyObject *args) {
        nsIVariant *pI = GetI(self);
        if (pI==NULL) return NULL;
        if (!PyArg_ParseTuple(args, ":Get")) return NULL;
        return PyObject_FromVariant((Py_nsISupports *)self, pI);
}

struct PyMethodDef
PyMethods_IVariant[] =
{
        { "getAsInt8", GetAsInt8, 1},
        { "getAsUint8", GetAsUint8, 1},
        { "getAsInt16", GetAsInt16, 1},
        { "getAsUint16", GetAsUint16, 1},
        { "getAsInt32", GetAsInt32, 1},
        { "getAsUint32", GetAsUint32, 1},
        { "getAsInt64", GetAsInt64, 1},
        { "getAsUint64", GetAsUint64, 1},
        { "getAsFloat", GetAsFloat, 1},
        { "getAsDouble", GetAsDouble, 1},
        { "getAsBool", GetAsBool, 1},
        { "getAsChar", GetAsChar, 1},
        { "getAsWChar", GetAsWChar, 1},
        { "getAsString", GetAsString, 1},
        { "getAsWString", GetAsWString, 1},
        { "getAsStringWithSize", GetAsStringWithSize, 1},
        { "getAsWStringWithSize", GetAsWStringWithSize, 1},
        { "getAsISupports", GetAsISupports, 1},
        { "getAsInterface", GetAsInterface, 1},
        { "getAsArray", GetAsArray, 1},
        { "getAsID", GetAsID, 1},
        { "get", Get, 1},
        {NULL}
};

PyObject *
Py_nsIVariant::getattr(const char *name)
{

        PyObject *ret = NULL;
        if (strcmp(name, "dataType")==0) {
        nsIVariant *pI = ::GetI(this);
        if (pI) {
            PRUint16 dt;
            nsresult nr = pI->GetDataType(&dt);
            if (NS_FAILED(nr)) return PyXPCOM_BuildPyException(nr);
            ret = PyInt_FromLong(dt);
        }
        } else {
                ret = Py_nsISupports::getattr(name);
        }
        return ret;
}

int
Py_nsIVariant::setattr(const char *name, PyObject *v)
{
        return Py_nsISupports::setattr(name, v);
}