commreg.cpp

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

	DPRINTF(D_REGISTRY, ("%s -- is ALREADY PRESENT!\n", k->get_key_str()));
	delete k;
	HX_VECTOR_DELETE(curr_key_str);
	return 0;
    }

    // everything is alright add the new property
    DB_node* new_d = _addBuf(k, curr_key_str, buf, ldb, PT_STRING);

    HX_VECTOR_DELETE(curr_key_str);

    AddDone(ldb, new_d, d, p);
    return new_d->get_id();
}

/*
 *  Function Name:  	GetStr
 *  Input Params:   	const char* prop_name, char*& value
 *  Return Value:   	HX_RESULT
 *  Description:
 *  	retrieves a STRING Property value from the registry given its
 *  property name.
 */
HX_RESULT
CommonRegistry::GetStr(const char* prop_name, REF(IHXBuffer*) p_buf) const
{
    DB_node*  d = 0;
    Property* p = 0;

    if (_find(&d, &p, prop_name) != HXR_OK)
	return HXR_FAIL;

    if (p)
    {
	switch(p->get_type())
	{
	    case PT_STRING:
		return p->get_buf_val(&p_buf, PT_STRING);
		break;

	    default:
		DPRINTF(D_REGISTRY, ("%s -- Property<-->Type MISMATCH\n",
		                     prop_name));
		return HXR_PROP_TYPE_MISMATCH;
	}
    }
    return HXR_FAIL;
}

/*
 *  Function Name:  	GetStr
 *  Input Params:   	const UINT32 hash_key, char*& value
 *  Return Value:   	HX_RESULT
 *  Description:
 *  	retrieves a STRING Property value from the registry given its
 *  hash key.
 */
HX_RESULT
CommonRegistry::GetStr(const UINT32 hash_key, REF(IHXBuffer*) p_buf) const
{
    DB_node*  d = 0;
    Property* p = 0;

    d = (DB_node *)_ids->get(hash_key);
    if (!d)
    {
	DPRINTF(D_REGISTRY, ("GetStr(%lu) failed\n", hash_key));
	return HXR_FAIL;
    }
    p = d->get_data();

    if (p)
    {
	switch(p->get_type())
	{
	    case PT_STRING:
		return p->get_buf_val(&p_buf, PT_STRING);
		break;

	    default:
		DPRINTF(D_REGISTRY, ("%lu -- Property<-->Type MISMATCH\n",
		                     hash_key));
		return HXR_PROP_TYPE_MISMATCH;
	}
    }
    return HXR_FAIL;
}

/*
 *  Function Name:  	SetStr
 *  Input Params:   	const char* prop_name, const IHXBuffer* value,
 *                      size_t val_len
 *  Return Value:   	HX_RESULT
 *  Description:
 *  	set the value of a STRING Property given a new value and its
 *  CORRECT length.
 */
HX_RESULT
CommonRegistry::SetStr(const char* prop_name, IHXBuffer* p_buf)
{
    DB_node*  d = 0;
    Property* p = 0;

    if (_find(&d, &p, prop_name) != HXR_OK)
	return HXR_FAIL;

    if (!p)
        return HXR_FAIL;

    if (p->is_read_only())
    {
        DPRINTF(D_REGISTRY, ("%s -- Property is READ ONLY\n",
	                     prop_name));
	return HXR_FAIL;
    }

    switch(p->get_type())
    {
        case PT_STRING:
            p->buf_val(p_buf, PT_STRING);
            break;

        default:
            DPRINTF(D_REGISTRY, ("%s -- Property<-->Type MISMATCH\n",
	                         prop_name));
            return HXR_PROP_TYPE_MISMATCH;
    }
    // dispatch the callbacks and then return HXR_OK
    return SetDone(d, p);
}

/*
 *  Function Name:  	SetStr
 *  Input Params:   	const UINT32 hash_key, const IHXBuffer* value,
 *                      size_t val_len
 *  Return Value:   	HX_RESULT
 *  Description:
 *  	set the value of a STRING Property given a new value and its
 *  CORRECT length.
 */
HX_RESULT
CommonRegistry::SetStr(const UINT32 hash_key, IHXBuffer* p_buf)
{
    DB_node*  d = 0;
    Property* p = 0;
    UINT32    h = hash_key;

    d = (DB_node *)_ids->get(hash_key);
    if (!d)
    {
	DPRINTF(D_REGISTRY, ("SetStr(%lu) failed\n", hash_key));
	return HXR_FAIL;
    }
    p = d->get_data();

    if (!p)
        return HXR_FAIL;

    if (p->is_read_only())
    {
        DPRINTF(D_REGISTRY, ("%lu -- Property is READ ONLY\n",
	                     hash_key));
	return HXR_FAIL;
    }

    switch(p->get_type())
    {
        case PT_STRING:
            p->buf_val(p_buf, PT_STRING);
            break;

        default:
            DPRINTF(D_REGISTRY, ("%lu -- Property<-->Type MISMATCH\n",
	                         hash_key));
            return HXR_PROP_TYPE_MISMATCH;
    }
    // dispatch the callbacks and then return HXR_OK
    return SetDone(d, p);
}

UINT32
CommonRegistry::AddBuf(const char* prop_name, IHXBuffer* buf)
{
    DPRINTF(D_REGISTRY, ("CommonRegistry::AddBuf(%s, buf(%p)\n",
                         prop_name, buf));
    DB_node* d = 0;
    Property* p = 0;
    Key* k = new Key(prop_name);
    if(!k)
    {
        return 0;
    }
    int len = k->size();
    char* curr_key_str = new char[len];
    if(!curr_key_str)
    {
        HX_DELETE(k);
        return 0;
    }
    DB_implem* ldb = _logdb_imp;
    BOOL read_only = FALSE;

    *curr_key_str = '\0';
    while(!k->last_sub_str())
    {
        k->append_sub_str(curr_key_str, len);
	if (p && p->get_type() == PT_COMPOSITE)
	    p->get_db_val(&ldb);
	if (!ldb)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s has NO Properties under it!\n",
	                         prop_name, curr_key_str));
	    HX_VECTOR_DELETE(curr_key_str);
	    delete k;
	    return 0;
	}
	d = ldb->find(curr_key_str);
	if (!d)
	{
	    int ret = _buildSubstructure4Prop(curr_key_str,
		prop_name);
	    if (!ret)
	    {
		delete k;
		delete[] curr_key_str;
		return 0;
	    }
	    d = ldb->find(curr_key_str);
	    if (!d)
	    {
		delete k;
		delete[] curr_key_str;
		return 0;
	    }
	}
	p = d->get_data();
        if (!p)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s has NO DATA\n",
	                         prop_name, curr_key_str));
	    HX_VECTOR_DELETE(curr_key_str);
	    delete k;
	    return 0;
	}
	read_only = p->is_read_only();
	if (read_only)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s is READ ONLY\n",
	                         prop_name, curr_key_str));
	    HX_VECTOR_DELETE(curr_key_str);
	    delete k;
	    return 0;
	}
    }
    if (p && p->get_type() == PT_COMPOSITE)
	p->get_db_val(&ldb);
    k->append_sub_str(curr_key_str, len);
    if (ldb->find(curr_key_str))
    {
	DPRINTF(D_REGISTRY, ("%s -- is ALREADY PRESENT!\n", k->get_key_str()));
	HX_VECTOR_DELETE(curr_key_str);
	delete k;
	return 0;
    }

    // everything is alright add the new property
    DB_node* new_d = _addBuf(k, curr_key_str, buf, ldb);

    HX_VECTOR_DELETE(curr_key_str);

    AddDone(ldb, new_d, d, p);
    return new_d->get_id();
}

HX_RESULT
CommonRegistry::GetBuf(const char* prop_name, IHXBuffer** pp_val) const
{
    DB_node*  d = 0;
    Property* p = 0;

    if (_find(&d, &p, prop_name) != HXR_OK)
	return HXR_FAIL;

    if (p)
    {
	if (p->get_type() == PT_BUFFER)
	{
	    return p->get_buf_val(pp_val);
	}
	else if (p->_alternate_string_access_ok)
	{
	    return p->get_buf_val(pp_val, PT_STRING);
	}
	else
	{
	    DPRINTF(D_REGISTRY, ("%s -- Property<-->Type MISMATCH\n",
				 prop_name));
	    return HXR_PROP_TYPE_MISMATCH;
	}
    }
    return HXR_FAIL;
}

HX_RESULT
CommonRegistry::GetBuf(const UINT32 hash_key, IHXBuffer** pp_buf) const
{
    DB_node*  d = 0;
    Property* p = 0;

    d = (DB_node *)_ids->get(hash_key);
    if (!d)
    {
	DPRINTF(D_REGISTRY, ("GetBuf(%lu) failed\n", hash_key));
	return HXR_FAIL;
    }
    p = d->get_data();

    if (p)
    {
	if (p->get_type() == PT_BUFFER)
	{
	    return p->get_buf_val(pp_buf);
	}
	else if (p->_alternate_string_access_ok)
	{
	    return p->get_buf_val(pp_buf, PT_STRING);
	}
	else
	{
	    DPRINTF(D_REGISTRY, ("%lu -- Property<-->Type MISMATCH\n",
				 hash_key));
	    return HXR_PROP_TYPE_MISMATCH;
	}
    }
    return HXR_FAIL;
}

HX_RESULT
CommonRegistry::SetBuf(const char* prop_name, IHXBuffer* p_buf)
{
    DB_node*  d = 0;
    Property* p = 0;

    if (_find(&d, &p, prop_name) != HXR_OK)
	return HXR_FAIL;

    if (!p)
        return HXR_FAIL;

    if (p->is_read_only())
    {
        DPRINTF(D_REGISTRY, ("%s -- Property is READ ONLY\n",
	                     prop_name));
	return HXR_FAIL;
    }

    if (p->get_type() == PT_BUFFER)
    {
	p->buf_val(p_buf);
    }
    else if (p->_alternate_string_access_ok)
    {
	p->buf_val(p_buf, PT_STRING);
    }
    else
    {
	DPRINTF(D_REGISTRY, ("%s -- Property<-->Type MISMATCH\n",
			     prop_name));
	return HXR_PROP_TYPE_MISMATCH;
    }
    // dispatch the callbacks and then return HXR_OK
    return SetDone(d, p);
}

HX_RESULT
CommonRegistry::SetBuf(const UINT32 hash_key, IHXBuffer* p_buf)
{
    DB_node*  d = 0;
    Property* p = 0;
    UINT32    h = hash_key;

    d = (DB_node *)_ids->get(hash_key);
    if (!d)
    {
	DPRINTF(D_REGISTRY, ("GetBuf(%lu) failed\n", hash_key));
	return HXR_FAIL;
    }
    p = d->get_data();

    if (!p)
        return HXR_FAIL;

    if (p->is_read_only())
    {
        DPRINTF(D_REGISTRY, ("%lu -- Property is READ ONLY\n",
	                     hash_key));
	return HXR_FAIL;
    }

    switch(p->get_type())
    {
        case PT_BUFFER:
	    p_buf->AddRef();
            p->buf_val(p_buf);
	    p_buf->Release();
            break;

        default:
            DPRINTF(D_REGISTRY, ("%lu -- Property<-->Type MISMATCH\n",
	                         hash_key));
            return HXR_PROP_TYPE_MISMATCH;
    }
    // dispatch the callbacks and then return HXR_OK
    return SetDone(d, p);
}

HX_RESULT
CommonRegistry::SetReadOnly(const char* pName, BOOL bValue)
{
    DB_node*  d = 0;
    Property* p = 0;

    if (_find(&d, &p, pName) != HXR_OK)
	return HXR_FAIL;

    if (!p)
        return HXR_FAIL;

    _setReadOnly(p, bValue);

    return HXR_OK;
}

HX_RESULT
CommonRegistry::SetReadOnly(UINT32 ulRegId, BOOL bValue)
{
    DB_node*  d = 0;
    Property* p = 0;

    d = (DB_node *)_ids->get(ulRegId);
    if (!d)
    {
	DPRINTF(D_REGISTRY, ("SetReadOnly(%lu) failed\n", ulRegId));
	return HXR_FAIL;
    }
    p = d->get_data();
    if (!p)
        return HXR_FAIL;

    _setReadOnly(p, bValue);

    return HXR_OK;
}

UINT32
CommonRegistry::AddIntRef(const char* prop_name, INT32* val)
{
    DPRINTF(D_REGISTRY, ("CommonRegistry::AddIntRef(%s, %ld)\n", prop_name,
                         *val));
    DB_node* d = 0;
    Property* p = 0;
    Key* k = new Key(prop_name);
    if(!k)
    {
        return 0;
    }
    int len = k->size();
    char* curr_key_str = new char[len];
    if(!curr_key_str)
    {
        HX_DELETE(k);
        return 0;
    }
    DB_implem* ldb = _logdb_imp;
    BOOL read_only = FALSE;

    *curr_key_str = '\0';
    while(!k->last_sub_str())
    {
        k->append_sub_str(curr_key_str, len);
	if (p && p->get_type() == PT_COMPOSITE)
	    p->get_db_val(&ldb);
	if (!ldb)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s has NO Properties under it!\n",
	                         prop_name, curr_key_str));
	    HX_VECTOR_DELETE(curr_key_str);
	    return 0;
	}
	d = ldb->find(curr_key_str);
	if (!d)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s was NOT FOUND\n",
	                         prop_name, curr_key_str));
	    HX_VECTOR_DELETE(curr_key_str);
	    return 0;
	}
	p = d->get_data();
        if (!p)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s has NO DATA\n",
	                         prop_name, curr_key_str));
	    HX_VECTOR_DELETE(curr_key_str);
	    return 0;
	}
	read_only = p->is_read_only();
	if (read_only)
	{
	    DPRINTF(D_REGISTRY, ("%s -- %s is READ ONLY\n",
	                         prop_name, curr_key_str));
	    HX_VECTOR_DELETE(curr_key_str);
	    return 0;
	}
    }
    if (p && p->get_type() == PT_COMPOSITE)
	p->get_db_val(&ldb);
    k->append_sub_str(curr_key_str, len);
    if (ldb->find(curr_key_str))
    {
	DPRINTF(D_REGISTRY, ("%s -- is ALREADY PRESENT!\n", k->get_key_str()));
	HX_VECTOR_DELETE(curr_key_str);
	return 0;
    }

    // everything is alright add the new property
    DB_node* new_d = _addIntRef(k, curr_key_str, val, ldb);

    HX_VECTOR_DELETE(curr_key_str);

    AddDone(ldb, new_d, d, p);
    return new_d->get_id();
}

/*
 *  Function Name:  	Del
 *  Input Params:   	const char* prop_name
 *  Return Value:   	UINT32
 *  Description:
 *  	delete a property (DB_node too) from the database given
 *  the key string.
 */
UINT32
CommonRegistry::Del(const char* prop_name)
{
    DB_node* d = 0;
    Property* p = 0;
    DB_implem* ldb = 0;

    if (_find(&d, &p, prop_name) != HXR_OK)
	return 0;

    if (!p)
    {
	DPRINTF(D_REGISTRY, ("%s -- has NO DATA\n", prop_name));
        return 0;
    }

    // XXXDPS - Currently we do not check if any of the children are read-
    // only before deleting the key. Thus, a user could delete a read-only
    // node by deleting its parent, grandparent, etc. This would slow down
    // the Del() call significantly in the general case because we would
    // have to do a search first, and abort the entire operation if any child
    // is read-only. So it is currently safest to write-protect a key that
    // has no parents (a root key, like "license" or "config").
    if (p->is_read_only())
    {
	DPRINTF(D_REGISTRY, ("%s -- is READ ONLY\n", prop_name));
        return 0;
    }

    // find the DB that contains this node
    ldb = d->get_db();

    if (!ldb)
    {
	DPRINTF(D_REGISTRY, ("%s -- has NO IMPLEMENTATION\n", prop_name));
        return 0;
    }

    // here the response method doesn't exactly end this method
    DeleteDone(ldb, d, p);

    UINT32 h = d->get_id();

    if (p->m_lWatchCount)
    {
	/*
	 * Wait for the clear watches to delete the node
	 */

	p->set_deleted(ldb, d, h);

	return h;
    }

    return _Del(ldb, d, p, h);
}

/*
 *  Function Name:  	Del
 *  Input Params:   	const UINT32 hash_key
 *  Return Value:   	UINT32
 *  Description:
 *  	delete a property (DB_node too) from the database given
 *  the key string.
 */
UINT32
CommonRegistry::Del(const UINT32 hash_key)
{