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dbus: add support for return values 

Signed-off-by: Julien Danjou <julien@danjou.info>
This commit is contained in:
Julien Danjou 2008-11-19 02:21:11 +01:00
parent fcf6151592
commit c0e6113e0b
2 changed files with 64 additions and 1 deletions
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63
dbus.c
View File

@ -224,7 +224,68 @@ a_dbus_process_request(DBusMessage *msg)
if(dbus_message_iter_init(msg, &iter))
nargs += a_dbus_message_iter(&iter);
luaA_dofunction(globalconf.L, globalconf.hooks.dbus, nargs, 0);
if(dbus_message_get_no_reply(msg))
luaA_dofunction(globalconf.L, globalconf.hooks.dbus, nargs, 0);
else
{
int n = lua_gettop(globalconf.L) - nargs;
luaA_dofunction(globalconf.L, globalconf.hooks.dbus, nargs, LUA_MULTRET);
n -= lua_gettop(globalconf.L);
DBusMessage *reply = dbus_message_new_method_return(msg);
dbus_message_iter_init_append(reply, &iter);
/* i is negative */
for(int i = n; i < 0; i += 2)
{
/* i is the type name, i+1 the value */
size_t len;
const char *type = lua_tolstring(globalconf.L, i, &len);
if(!type || len != 1)
break;
switch(*type)
{
case DBUS_TYPE_BOOLEAN:
{
bool b = lua_toboolean(globalconf.L, i + 1);
dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b);
}
break;
#define DBUS_MSG_RETURN_HANDLE_TYPE_STRING(dbustype) \
case dbustype: \
if((s = lua_tostring(globalconf.L, i + 1))) \
dbus_message_iter_append_basic(&iter, dbustype, &s); \
break;
DBUS_MSG_RETURN_HANDLE_TYPE_STRING(DBUS_TYPE_STRING)
DBUS_MSG_RETURN_HANDLE_TYPE_STRING(DBUS_TYPE_BYTE)
#undef DBUS_MSG_RETURN_HANDLE_TYPE_STRING
#define DBUS_MSG_RETURN_HANDLE_TYPE_NUMBER(type, dbustype) \
case dbustype: \
{ \
type num = lua_tonumber(globalconf.L, i + 1); \
dbus_message_iter_append_basic(&iter, dbustype, &num); \
} \
break;
DBUS_MSG_RETURN_HANDLE_TYPE_NUMBER(int16_t, DBUS_TYPE_INT16)
DBUS_MSG_RETURN_HANDLE_TYPE_NUMBER(uint16_t, DBUS_TYPE_UINT16)
DBUS_MSG_RETURN_HANDLE_TYPE_NUMBER(int32_t, DBUS_TYPE_INT32)
DBUS_MSG_RETURN_HANDLE_TYPE_NUMBER(uint32_t, DBUS_TYPE_UINT32)
DBUS_MSG_RETURN_HANDLE_TYPE_NUMBER(int64_t, DBUS_TYPE_INT64)
DBUS_MSG_RETURN_HANDLE_TYPE_NUMBER(uint64_t, DBUS_TYPE_UINT64)
DBUS_MSG_RETURN_HANDLE_TYPE_NUMBER(double, DBUS_TYPE_DOUBLE)
#undef DBUS_MSG_RETURN_HANDLE_TYPE_NUMBER
}
lua_remove(globalconf.L, i);
lua_remove(globalconf.L, i + 1);
}
dbus_connection_send(dbus_connection, reply, NULL);
dbus_message_unref(reply);
}
}
static void

2
hooks.c
View File

@ -180,6 +180,8 @@ luaA_hooks_timer(lua_State *L)
* receive: signal, method_call, method_return or error.
* The second argument is the path.
* The other arguments are a variable list of arguments.
* The function can return values using pair of type, value.
* For example: return "s", "hello", "i", 32
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
* \luastack