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if (!org.bustany.TrackerBird.TrackerSparql || !org.bustany.TrackerBird.TrackerSparql.__initialized)
org.bustany.TrackerBird.TrackerSparql = {
__initialized: true,
_trackerSparqlPath1: "libtracker-sparql-1.0.so.0",
_trackerSparqlPath2: "libtracker-sparql-0.16.so.0",
_lib: null,
init: function () {
var tracker = org.bustany.TrackerBird.TrackerSparql;
// Safeguard just in case a fool would call that twice
if (tracker._lib) {
return true;
}
Components.utils.import ("resource://gre/modules/ctypes.jsm");
try {
tracker._lib = ctypes.open (tracker._trackerSparqlPath1);
} catch (e) {
dump ("Could not load " + tracker._trackerSparqlPath1 + ": " + e + "\n");
try {
tracker._lib = ctypes.open (tracker._trackerSparqlPath2);
} catch (e) {
dump ("Could not load " + tracker._trackerSparqlPath2 + ": " + e + "\n");
return false;
}
}
// GLib types
tracker.Object = new ctypes.StructType ("GObject");
tracker.Cancellable = new ctypes.StructType ("GCancellable");
tracker.Error = new ctypes.StructType ("GError", [
{domain : ctypes.uint32_t},
{code : ctypes.int32_t},
{message : ctypes.char.ptr}
]);
tracker.AsyncResult = new ctypes.StructType ("GAsyncResult");
tracker.AsyncReadyCallback = new ctypes.FunctionType(
ctypes.default_abi,
ctypes.void_t,
[ tracker.Object.ptr, tracker.AsyncResult.ptr, ctypes.voidptr_t ]);
// TrackerSparql types
tracker.Connection = ctypes.StructType ("TrackerSparqlConnection");
tracker.Cursor = ctypes.StructType ("TrackerSparqlCursor");
// GLib methods
tracker.free = tracker._lib.declare (
"g_free",
ctypes.default_abi,
ctypes.void_t,
ctypes.voidptr_t
);
tracker.object_unref = tracker._lib.declare (
"g_object_unref",
ctypes.default_abi,
ctypes.void_t,
tracker.Object.ptr
);
tracker.error_free = tracker._lib.declare (
"g_error_free",
ctypes.default_abi,
ctypes.void_t,
tracker.Error.ptr
);
// TrackerSparql methods (name, ABI, args with first arg = return type)
tracker.connection_open = tracker._lib.declare (
"tracker_sparql_connection_get",
ctypes.default_abi,
tracker.Connection.ptr,
tracker.Cancellable.ptr,
tracker.Error.ptr.ptr
);
tracker.connection_open_async = tracker._lib.declare (
"tracker_sparql_connection_get_async",
ctypes.default_abi,
ctypes.void_t,
tracker.Cancellable.ptr,
tracker.AsyncReadyCallback.ptr,
ctypes.voidptr_t);
tracker.connection_open_finish = tracker._lib.declare (
"tracker_sparql_connection_get_finish",
ctypes.default_abi,
tracker.Connection.ptr,
tracker.AsyncResult.ptr,
tracker.Error.ptr.ptr);
tracker.connection_query = tracker._lib.declare (
"tracker_sparql_connection_query",
ctypes.default_abi,
tracker.Cursor.ptr,
tracker.Connection.ptr,
ctypes.char.ptr,
tracker.Cancellable.ptr,
tracker.Error.ptr.ptr
);
tracker.connection_update = tracker._lib.declare (
"tracker_sparql_connection_update",
ctypes.default_abi,
ctypes.void_t,
tracker.Connection.ptr,
ctypes.char.ptr,
ctypes.int32_t,
tracker.Cancellable.ptr,
tracker.Error.ptr.ptr
);
tracker.cursor_next = tracker._lib.declare (
"tracker_sparql_cursor_next",
ctypes.default_abi,
ctypes.bool,
tracker.Cursor.ptr,
tracker.Cancellable.ptr,
tracker.Error.ptr.ptr
);
tracker.cursor_get_string = tracker._lib.declare (
"tracker_sparql_cursor_get_string",
ctypes.default_abi,
ctypes.char.ptr,
tracker.Cursor.ptr,
ctypes.int,
ctypes.long.ptr
);
tracker.escape_string = tracker._lib.declare (
"tracker_sparql_escape_string",
ctypes.default_abi,
ctypes.char.ptr,
ctypes.char.ptr
);
dump ("TrackerSparql initialized successfully\n")
return true;
},
shutdown: function () {
var tracker = org.bustany.TrackerBird.TrackerSparql;
if (this._connection) {
dump ("TrackerSparql closing connection\n")
tracker.object_unref(this._connection);
}
if (this._lib) {
dump ("TrackerSparql closing library\n")
this._lib.close ();
}
dump ("TrackerSparql shut down successfully\n")
}
}
|
