Archipelago » qemu

/*

 * QString data type.

 *

 * Copyright (C) 2009 Red Hat Inc.

 *

 * Authors:

 *  Luiz Capitulino <lcapitulino@redhat.com>

 *

 * This work is licensed under the terms of the GNU GPL, version 2.  See

 * the COPYING file in the top-level directory.

 */

#include "qobject.h"

#include "qstring.h"

#include "qemu-common.h"

static void qstring_destroy_obj(QObject *obj);

static const QType qstring_type = {

    .code = QTYPE_QSTRING,

    .destroy = qstring_destroy_obj,

};

/**

 * qstring_from_str(): Create a new QString from a regular C string

 *

 * Return strong reference.

 */

QString *qstring_from_str(const char *str)

{

    QString *qstring;

    qstring = qemu_malloc(sizeof(*qstring));

    qstring->string = qemu_strdup(str);

    QOBJECT_INIT(qstring, &qstring_type);

    return qstring;

}

/**

 * qobject_to_qstring(): Convert a QObject to a QString

 */

QString *qobject_to_qstring(const QObject *obj)

{

    if (qobject_type(obj) != QTYPE_QSTRING)

        return NULL;

    return container_of(obj, QString, base);

}

/**

 * qstring_get_str(): Return a pointer to the stored string

 *

 * NOTE: Should be used with caution, if the object is deallocated

 * this pointer becomes invalid.

 */

const char *qstring_get_str(const QString *qstring)

{

    return qstring->string;

}

/**

 * qstring_destroy_obj(): Free all memory allocated by a QString

 * object

 */

static void qstring_destroy_obj(QObject *obj)

{

    QString *qs;

    assert(obj != NULL);

    qs = qobject_to_qstring(obj);

    qemu_free(qs->string);

    qemu_free(qs);

}