This commit was manufactured by cvs2svn to create tag 'GAL_0_3'.GAL_0_3

svn path=/tags/GAL_0_3/; revision=6825

1 files changed, 0 insertions, 1102 deletions

diff --git a/calendar/pcs/cal-backend-file.c b/calendar/pcs/cal-backend-file.c
deleted file mode 100644
index c63e690246..0000000000
--- a/calendar/pcs/cal-backend-file.c
+++ /dev/null
@@ -1,1102 +0,0 @@
-/* Evolution calendar - iCalendar file backend
- *
- * Copyright (C) 2000 Helix Code, Inc.
- *
- * Author: Federico Mena-Quintero <federico@helixcode.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#include <config.h>
-#include <gtk/gtksignal.h>
-#include "cal-util/cal-recur.h"
-#include "cal-backend-file.h"
-
-
-
-/* Private part of the CalBackendFile structure */
-struct _CalBackendFilePrivate {
-	/* URI where the calendar data is stored */
-	GnomeVFSURI *uri;
-
-	/* List of Cal objects with their listeners */
-	GList *clients;
-
-	/* Toplevel VCALENDAR component */
-	icalcomponent *icalcomp;
-
-	/* All the CalComponent objects in the calendar, hashed by UID.  The
-	 * hash key *is* the uid returned by cal_component_get_uid(); it is not
-	 * copied, so don't free it when you remove an object from the hash
-	 * table.
-	 */
-	GHashTable *comp_uid_hash;
-
-	/* All event, to-do, and journal components in the calendar; they are
-	 * here just for easy access (i.e. so that you don't have to iterate
-	 * over the comp_uid_hash).  If you need *all* the components in the
-	 * calendar, iterate over the hash instead.
-	 */
-	GList *events;
-	GList *todos;
-	GList *journals;
-
-	/* Idle handler for saving the calendar when it is dirty */
-	guint idle_id;
-};
-
-
-
-static void cal_backend_file_class_init (CalBackendFileClass *class);
-static void cal_backend_file_init (CalBackendFile *cbfile);
-static void cal_backend_file_destroy (GtkObject *object);
-
-static GnomeVFSURI *cal_backend_file_get_uri (CalBackend *backend);
-static void cal_backend_file_add_cal (CalBackend *backend, Cal *cal);
-static CalBackendLoadStatus cal_backend_file_load (CalBackend *backend, GnomeVFSURI *uri);
-static void cal_backend_file_create (CalBackend *backend, GnomeVFSURI *uri);
-
-static int cal_backend_file_get_n_objects (CalBackend *backend, CalObjType type);
-static char *cal_backend_file_get_object (CalBackend *backend, const char *uid);
-static CalObjType cal_backend_file_get_type_by_uid (CalBackend *backend, const char *uid);
-static GList *cal_backend_file_get_uids (CalBackend *backend, CalObjType type);
-static GList *cal_backend_file_get_objects_in_range (CalBackend *backend, CalObjType type,
-						     time_t start, time_t end);
-static GList *cal_backend_file_get_alarms_in_range (CalBackend *backend, time_t start, time_t end);
-static gboolean cal_backend_file_get_alarms_for_object (CalBackend *backend, const char *uid,
-							time_t start, time_t end,
-							GList **alarms);
-static gboolean cal_backend_file_update_object (CalBackend *backend, const char *uid,
-					       const char *calobj);
-static gboolean cal_backend_file_remove_object (CalBackend *backend, const char *uid);
-
-static CalBackendClass *parent_class;
-
-
-
-/**
- * cal_backend_file_get_type:
- * @void: 
- * 
- * Registers the #CalBackendFile class if necessary, and returns the type ID
- * associated to it.
- * 
- * Return value: The type ID of the #CalBackendFile class.
- **/
-GtkType
-cal_backend_file_get_type (void)
-{
-	static GtkType cal_backend_file_type = 0;
-
-	if (!cal_backend_file_type) {
-		static const GtkTypeInfo cal_backend_file_info = {
-			"CalBackendFile",
-			sizeof (CalBackendFile),
-			sizeof (CalBackendFileClass),
-			(GtkClassInitFunc) cal_backend_file_class_init,
-			(GtkObjectInitFunc) cal_backend_file_init,
-			NULL, /* reserved_1 */
-			NULL, /* reserved_2 */
-			(GtkClassInitFunc) NULL
-		};
-
-		cal_backend_file_type = gtk_type_unique (CAL_BACKEND_TYPE, &cal_backend_file_info);
-	}
-
-	return cal_backend_file_type;
-}
-
-/* Class initialization function for the file backend */
-static void
-cal_backend_file_class_init (CalBackendFileClass *class)
-{
-	GtkObjectClass *object_class;
-	CalBackendClass *backend_class;
-
-	object_class = (GtkObjectClass *) class;
-	backend_class = (CalBackendClass *) class;
-
-	parent_class = gtk_type_class (CAL_BACKEND_TYPE);
-
-	object_class->destroy = cal_backend_file_destroy;
-
-	backend_class->get_uri = cal_backend_file_get_uri;
-	backend_class->add_cal = cal_backend_file_add_cal;
-	backend_class->load = cal_backend_file_load;
-	backend_class->create = cal_backend_file_create;
-	backend_class->get_n_objects = cal_backend_file_get_n_objects;
-	backend_class->get_object = cal_backend_file_get_object;
-	backend_class->get_type_by_uid = cal_backend_file_get_type_by_uid;
-	backend_class->get_uids = cal_backend_file_get_uids;
-	backend_class->get_objects_in_range = cal_backend_file_get_objects_in_range;
-	backend_class->get_alarms_in_range = cal_backend_file_get_alarms_in_range;
-	backend_class->get_alarms_for_object = cal_backend_file_get_alarms_for_object;
-	backend_class->update_object = cal_backend_file_update_object;
-	backend_class->remove_object = cal_backend_file_remove_object;
-}
-
-/* Object initialization function for the file backend */
-static void
-cal_backend_file_init (CalBackendFile *cbfile)
-{
-	CalBackendFilePrivate *priv;
-
-	priv = g_new0 (CalBackendFilePrivate, 1);
-	cbfile->priv = priv;
-}
-
-/* g_hash_table_foreach() callback to destroy a CalComponent */
-static void
-free_cal_component (gpointer key, gpointer value, gpointer data)
-{
-	CalComponent *comp;
-
-	comp = CAL_COMPONENT (value);
-	gtk_object_unref (GTK_OBJECT (comp));
-}
-
-/* Saves the calendar data */
-static void
-save (CalBackendFile *cbfile)
-{
-	CalBackendFilePrivate *priv;
-	GnomeVFSHandle *handle = NULL;
-	GnomeVFSResult result;
-	GnomeVFSFileSize out;
-	gchar *tmp;
-	char *buf;
-	
-	priv = cbfile->priv;
-	g_assert (priv->uri != NULL);
-	g_assert (priv->icalcomp != NULL);
-
-	/* Make a backup copy of the file if it exists */
-	tmp = gnome_vfs_uri_to_string (priv->uri, GNOME_VFS_URI_HIDE_NONE);
-	if (tmp) {
-		GnomeVFSURI *backup_uri;
-		gchar *backup_uristr;
-		
-		backup_uristr = g_strconcat (tmp, "~", NULL);
-		backup_uri = gnome_vfs_uri_new (backup_uristr);
-		
-		result = gnome_vfs_move_uri (priv->uri, backup_uri, TRUE);
-		gnome_vfs_uri_unref (backup_uri);
-		
-		g_free (tmp);
-		g_free (backup_uristr);
-	}
-	
-	/* Now write the new file out */
-	result = gnome_vfs_create_uri (&handle, priv->uri, 
-				       GNOME_VFS_OPEN_WRITE,
-				       FALSE, 0666);
-	
-	if (result != GNOME_VFS_OK)
-		goto error;
-	
-	buf = icalcomponent_as_ical_string (priv->icalcomp);
-	result = gnome_vfs_write (handle, buf, strlen (buf) * sizeof (char), &out);
-
-	if (result != GNOME_VFS_OK)
-		goto error;
-
-	gnome_vfs_close (handle);
-
-	return;
-	
- error:
-	g_warning ("Error writing calendar file.");
-	return;
-}
-
-/* Destroy handler for the file backend */
-static void
-cal_backend_file_destroy (GtkObject *object)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-
-	g_return_if_fail (object != NULL);
-	g_return_if_fail (IS_CAL_BACKEND_FILE (object));
-
-	cbfile = CAL_BACKEND_FILE (object);
-	priv = cbfile->priv;
-
-	g_assert (priv->clients == NULL);
-
-	/* Save if necessary */
-
-	if (priv->idle_id != 0) {
-		save (cbfile);
-		g_source_remove (priv->idle_id);
-		priv->idle_id = 0;
-	}
-
-	/* Clean up */
-
-	if (priv->uri) {
-		gnome_vfs_uri_unref (priv->uri);
-		priv->uri = NULL;
-	}
-
-	if (priv->comp_uid_hash) {
-		g_hash_table_foreach (priv->comp_uid_hash, 
-				      free_cal_component, NULL);
-		g_hash_table_destroy (priv->comp_uid_hash);
-		priv->comp_uid_hash = NULL;
-	}
-
-	g_list_free (priv->events);
-	g_list_free (priv->todos);
-	g_list_free (priv->journals);
-
-	priv->events = NULL;
-	priv->todos = NULL;
-	priv->journals = NULL;
-
-	if (priv->icalcomp) {
-		icalcomponent_free (priv->icalcomp);
-		priv->icalcomp = NULL;
-	}
-
-	g_free (priv);
-	cbfile->priv = NULL;
-
-	if (GTK_OBJECT_CLASS (parent_class)->destroy)
-		(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
-}
-
-
-
-/* Looks up a component by its UID on the backend's component hash table */
-static CalComponent *
-lookup_component (CalBackendFile *cbfile, const char *uid)
-{
-	CalBackendFilePrivate *priv;
-	CalComponent *comp;
-
-	priv = cbfile->priv;
-
-	comp = g_hash_table_lookup (priv->comp_uid_hash, uid);
-
-	return comp;
-}
-
-
-
-/* Calendar backend methods */
-
-/* Get_uri handler for the file backend */
-static GnomeVFSURI *
-cal_backend_file_get_uri (CalBackend *backend)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-
-	cbfile = CAL_BACKEND_FILE (backend);
-	priv = cbfile->priv;
-
-	g_return_val_if_fail (priv->icalcomp != NULL, NULL);
-	g_assert (priv->uri != NULL);
-
-	return priv->uri;
-}
-
-/* Callback used when a Cal is destroyed */
-static void
-cal_destroy_cb (GtkObject *object, gpointer data)
-{
-	Cal *cal;
-	Cal *lcal;
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-	GList *l;
-
-	cal = CAL (object);
-
-	cbfile = CAL_BACKEND_FILE (data);
-	priv = cbfile->priv;
-
-	/* Find the cal in the list of clients */
-
-	for (l = priv->clients; l; l = l->next) {
-		lcal = CAL (l->data);
-
-		if (lcal == cal)
-			break;
-	}
-
-	g_assert (l != NULL);
-
-	/* Disconnect */
-
-	priv->clients = g_list_remove_link (priv->clients, l);
-	g_list_free_1 (l);
-
-	/* When all clients go away, notify the parent factory about it so that
-	 * it may decide whether to kill the backend or not.
-	 */
-	if (!priv->clients)
-		cal_backend_last_client_gone (CAL_BACKEND (cbfile));
-}
-
-/* Add_cal handler for the file backend */
-static void
-cal_backend_file_add_cal (CalBackend *backend, Cal *cal)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-
-	cbfile = CAL_BACKEND_FILE (backend);
-	priv = cbfile->priv;
-
-	g_return_if_fail (priv->icalcomp != NULL);
-	g_return_if_fail (cal != NULL);
-	g_return_if_fail (IS_CAL (cal));
-
-	/* We do not keep a reference to the Cal since the calendar user agent
-	 * owns it.
-	 */
-
-	gtk_signal_connect (GTK_OBJECT (cal), "destroy",
-			    GTK_SIGNAL_FUNC (cal_destroy_cb),
-			    backend);
-
-	priv->clients = g_list_prepend (priv->clients, cal);
-}
-
-/* Idle handler; we save the calendar since it is dirty */
-static gboolean
-save_idle (gpointer data)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-
-	cbfile = CAL_BACKEND_FILE (data);
-	priv = cbfile->priv;
-
-	g_assert (priv->icalcomp != NULL);
-
-	save (cbfile);
-
-	priv->idle_id = 0;
-	return FALSE;
-}
-
-/* Marks the file backend as dirty and queues a save operation */
-static void
-mark_dirty (CalBackendFile *cbfile)
-{
-	CalBackendFilePrivate *priv;
-
-	priv = cbfile->priv;
-
-	if (priv->idle_id != 0)
-		return;
-
-	priv->idle_id = g_idle_add (save_idle, cbfile);
-}
-
-/* Checks if the specified component has a duplicated UID and if so changes it */
-static void
-check_dup_uid (CalBackendFile *cbfile, CalComponent *comp)
-{
-	CalBackendFilePrivate *priv;
-	CalComponent *old_comp;
-	const char *uid;
-	char *new_uid;
-
-	priv = cbfile->priv;
-
-	cal_component_get_uid (comp, &uid);
-
-	old_comp = g_hash_table_lookup (priv->comp_uid_hash, uid);
-	if (!old_comp)
-		return; /* Everything is fine */
-
-	g_message ("check_dup_uid(): Got object with duplicated UID `%s', changing it...", uid);
-
-	new_uid = cal_component_gen_uid ();
-	cal_component_set_uid (comp, new_uid);
-	g_free (new_uid);
-
-	/* FIXME: I think we need to reset the SEQUENCE property and reset the
-	 * CREATED/DTSTAMP/LAST-MODIFIED.
-	 */
-
-	mark_dirty (cbfile);
-}
-
-/* Tries to add an icalcomponent to the file backend.  We only store the objects
- * of the types we support; all others just remain in the toplevel component so
- * that we don't lose them.
- */
-static void
-add_component (CalBackendFile *cbfile, CalComponent *comp, gboolean add_to_toplevel)
-{
-	CalBackendFilePrivate *priv;
-	GList **list;
-	const char *uid;
-	
-	priv = cbfile->priv;
-
-	switch (cal_component_get_vtype (comp)) {
-	case CAL_COMPONENT_EVENT:
-		list = &priv->events;
-		break;
-
-	case CAL_COMPONENT_TODO:
-		list = &priv->todos;
-		break;
-
-	case CAL_COMPONENT_JOURNAL:
-		list = &priv->journals;
-		break;
-
-	default:
-		g_assert_not_reached ();
-		return;
-	}
-
-	/* Ensure that the UID is unique; some broken implementations spit
-	 * components with duplicated UIDs.
-	 */
-	check_dup_uid (cbfile, comp);
-	cal_component_get_uid (comp, &uid);
-	g_hash_table_insert (priv->comp_uid_hash, (char *)uid, comp);
-
-	*list = g_list_prepend (*list, comp);
-
-	/* Put the object in the toplevel component if required */
-
-	if (add_to_toplevel) {
-		icalcomponent *icalcomp;
-
-		icalcomp = cal_component_get_icalcomponent (comp);
-		g_assert (icalcomp != NULL);
-
-		icalcomponent_add_component (priv->icalcomp, icalcomp);
-	}
-}
-
-/* Removes a component from the backend's hash and lists.  Does not perform
- * notification on the clients.  Also removes the component from the toplevel
- * icalcomponent.
- */
-static void
-remove_component (CalBackendFile *cbfile, CalComponent *comp)
-{
-	CalBackendFilePrivate *priv;
-	icalcomponent *icalcomp;
-	const char *uid;
-	GList **list, *l;
-
-	priv = cbfile->priv;
-
-	/* Remove the icalcomp from the toplevel */
-
-	icalcomp = cal_component_get_icalcomponent (comp);
-	g_assert (icalcomp != NULL);
-
-	icalcomponent_remove_component (priv->icalcomp, icalcomp);
-
-	/* Remove it from our mapping */
-
-	cal_component_get_uid (comp, &uid);
-	g_hash_table_remove (priv->comp_uid_hash, uid);
-	
-	switch (cal_component_get_vtype (comp)) {
-	case CAL_COMPONENT_EVENT:
-		list = &priv->events;
-		break;
-
-	case CAL_COMPONENT_TODO:
-		list = &priv->todos;
-		break;
-
-	case CAL_COMPONENT_JOURNAL:
-		list = &priv->journals;
-		break;
-
-	default:
-                /* Make the compiler shut up. */
-	        list = NULL;
-		g_assert_not_reached ();
-	}
-
-	l = g_list_find (*list, comp);
-	g_assert (l != NULL);
-
-	*list = g_list_remove_link (*list, l);
-	g_list_free_1 (l);
-
-	gtk_object_unref (GTK_OBJECT (comp));
-}
-
-/* Scans the toplevel VCALENDAR component and stores the objects it finds */
-static void
-scan_vcalendar (CalBackendFile *cbfile)
-{
-	CalBackendFilePrivate *priv;
-	icalcompiter iter;
-
-	priv = cbfile->priv;
-	g_assert (priv->icalcomp != NULL);
-	g_assert (priv->comp_uid_hash != NULL);
-
-	for (iter = icalcomponent_begin_component (priv->icalcomp, ICAL_ANY_COMPONENT);
-	     icalcompiter_deref (&iter) != NULL;
-	     icalcompiter_next (&iter)) {
-		icalcomponent *icalcomp;
-		icalcomponent_kind kind;
-		CalComponent *comp;
-
-		icalcomp = icalcompiter_deref (&iter);
-		
-		kind = icalcomponent_isa (icalcomp);
-
-		if (!(kind == ICAL_VEVENT_COMPONENT
-		      || kind == ICAL_VTODO_COMPONENT
-		      || kind == ICAL_VJOURNAL_COMPONENT))
-			continue;
-
-		comp = cal_component_new ();
-
-		if (!cal_component_set_icalcomponent (comp, icalcomp))
-			continue;
-
-		add_component (cbfile, comp, FALSE);
-	}
-}
-
-/* Callback used from icalparser_parse() */
-static char *
-get_line (char *s, size_t size, void *data)
-{
-	FILE *file;
-
-	file = data;
-	return fgets (s, size, file);
-}
-
-/* Load handler for the file backend */
-static CalBackendLoadStatus
-cal_backend_file_load (CalBackend *backend, GnomeVFSURI *uri)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-	char *str_uri;
-	FILE *file;
-	icalparser *parser;
-	icalcomponent *icalcomp;
-
-	cbfile = CAL_BACKEND_FILE (backend);
-	priv = cbfile->priv;
-
-	g_return_val_if_fail (priv->icalcomp == NULL, CAL_BACKEND_LOAD_ERROR);
-	g_return_val_if_fail (uri != NULL, CAL_BACKEND_LOAD_ERROR);
-
-	if (!gnome_vfs_uri_is_local (uri))
-		return CAL_BACKEND_LOAD_ERROR;
-
-	str_uri = gnome_vfs_uri_to_string (uri,
-					   (GNOME_VFS_URI_HIDE_USER_NAME
-					    | GNOME_VFS_URI_HIDE_PASSWORD
-					    | GNOME_VFS_URI_HIDE_HOST_NAME
-					    | GNOME_VFS_URI_HIDE_HOST_PORT
-					    | GNOME_VFS_URI_HIDE_TOPLEVEL_METHOD));
-
-	/* Load! */
-	file = fopen (str_uri, "r");
-	g_free (str_uri);
-
-	if (!file)
-		return CAL_BACKEND_LOAD_ERROR;
-
-	parser = icalparser_new ();
-	icalparser_set_gen_data (parser, file);
-
-	icalcomp = icalparser_parse (parser, get_line);
-	icalparser_free (parser);
-
-	if (fclose (file) != 0)
-		return CAL_BACKEND_LOAD_ERROR;
-
-	if (!icalcomp)
-		return CAL_BACKEND_LOAD_ERROR;
-
-	/* FIXME: should we try to demangle XROOT components and individual
-         * components as well?
-	 */
-
-	if (icalcomponent_isa (icalcomp) != ICAL_VCALENDAR_COMPONENT)
-		return CAL_BACKEND_LOAD_ERROR;
-
-	priv->icalcomp = icalcomp;
-
-	priv->comp_uid_hash = g_hash_table_new (g_str_hash, g_str_equal);
-	scan_vcalendar (cbfile);
-
-	/* Clean up */
-	if (priv->uri)
-		gnome_vfs_uri_unref (priv->uri);
-	
-	gnome_vfs_uri_ref (uri);
-	priv->uri = uri;
-
-	return CAL_BACKEND_LOAD_SUCCESS;
-}
-
-/* Create handler for the file backend */
-static void
-cal_backend_file_create (CalBackend *backend, GnomeVFSURI *uri)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-	icalproperty *prop;
-
-	cbfile = CAL_BACKEND_FILE (backend);
-	priv = cbfile->priv;
-
-	g_return_if_fail (priv->icalcomp == NULL);
-	g_return_if_fail (uri != NULL);
-
-	/* Create the new calendar information */
-
-	g_assert (priv->icalcomp == NULL);
-	priv->icalcomp = icalcomponent_new (ICAL_VCALENDAR_COMPONENT);
-
-	/* RFC 2445, section 4.7.1 */
-	prop = icalproperty_new_calscale ("GREGORIAN");
-	icalcomponent_add_property (priv->icalcomp, prop);
-
-	/* RFC 2445, section 4.7.3 */
-	prop = icalproperty_new_prodid ("-//Helix Code//NONSGML Evolution Calendar//EN");
-	icalcomponent_add_property (priv->icalcomp, prop);
-
-	/* RFC 2445, section 4.7.4 */
-	prop = icalproperty_new_version ("2.0");
-	icalcomponent_add_property (priv->icalcomp, prop);
-
-	/* Create our internal data */
-
-	g_assert (priv->comp_uid_hash == NULL);
-	priv->comp_uid_hash = g_hash_table_new (g_str_hash, g_str_equal);
-
-	/* Clean up */
-	if (priv->uri)
-		gnome_vfs_uri_unref (priv->uri);
-	
-	gnome_vfs_uri_ref (uri);
-	priv->uri = uri;
-
-	mark_dirty (cbfile);
-}
-
-/* Get_n_objects handler for the file backend */
-static int
-cal_backend_file_get_n_objects (CalBackend *backend, CalObjType type)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-	int n;
-
-	cbfile = CAL_BACKEND_FILE (backend);
-	priv = cbfile->priv;
-
-	g_return_val_if_fail (priv->icalcomp != NULL, -1);
-
-	n = 0;
-
-	if (type & CALOBJ_TYPE_EVENT)
-		n += g_list_length (priv->events);
-
-	if (type & CALOBJ_TYPE_TODO)
-		n += g_list_length (priv->todos);
-
-	if (type & CALOBJ_TYPE_JOURNAL)
-		n += g_list_length (priv->journals);
-
-	return n;
-}
-
-/* Get_object handler for the file backend */
-static char *
-cal_backend_file_get_object (CalBackend *backend, const char *uid)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-	CalComponent *comp;
-
-	cbfile = CAL_BACKEND_FILE (backend);
-	priv = cbfile->priv;
-
-	g_return_val_if_fail (uid != NULL, NULL);
-
-	g_return_val_if_fail (priv->icalcomp != NULL, NULL);
-	g_assert (priv->comp_uid_hash != NULL);
-
-	comp = lookup_component (cbfile, uid);
-
-	if (!comp)
-		return NULL;
-
-	return cal_component_get_as_string (comp);
-}
-
-static CalObjType
-cal_backend_file_get_type_by_uid (CalBackend *backend, const char *uid)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-	CalComponent *comp;
-	CalComponentVType type;
-	
-	cbfile = CAL_BACKEND_FILE (backend);
-	priv = cbfile->priv;
-
-	comp = lookup_component (cbfile, uid);
-	if (!comp)
-		return CAL_COMPONENT_NO_TYPE;
-	
-	type = cal_component_get_vtype (comp);
-	switch (type) {
-	case CAL_COMPONENT_EVENT:
-		return CALOBJ_TYPE_EVENT;
-	case CAL_COMPONENT_TODO:
-		return CALOBJ_TYPE_TODO;
-	case CAL_COMPONENT_JOURNAL:
-		return CALOBJ_TYPE_JOURNAL;
-	default:
-		return CAL_COMPONENT_NO_TYPE;
-	}
-}
-
-/* Builds a list of UIDs from a list of CalComponent objects */
-static void
-build_uids_list (GList **list, GList *components)
-{
-	GList *l;
-
-	for (l = components; l; l = l->next) {
-		CalComponent *comp;
-		const char *uid;
-
-		comp = CAL_COMPONENT (l->data);
-		cal_component_get_uid (comp, &uid);
-		*list = g_list_prepend (*list, g_strdup (uid));
-	}
-}
-
-/* Get_uids handler for the file backend */
-static GList *
-cal_backend_file_get_uids (CalBackend *backend, CalObjType type)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-	GList *list;
-
-	cbfile = CAL_BACKEND_FILE (backend);
-	priv = cbfile->priv;
-
-	g_return_val_if_fail (priv->icalcomp != NULL, NULL);
-
-	list = NULL;
-
-	if (type & CALOBJ_TYPE_EVENT)
-		build_uids_list (&list, priv->events);
-
-	if (type & CALOBJ_TYPE_TODO)
-		build_uids_list (&list, priv->todos);
-
-	if (type & CALOBJ_TYPE_JOURNAL)
-		build_uids_list (&list, priv->journals);
-
-	return list;
-}
-
-/* Callback used from cal_recur_generate_instances(); adds the component's UID
- * to our hash table.
- */
-static gboolean
-add_instance (CalComponent *comp, time_t start, time_t end, gpointer data)
-{
-	GHashTable *uid_hash;
-	const char *uid;
-	const char *old_uid;
-
-	uid_hash = data;
-
-	/* We only care that the component's UID is listed in the hash table;
-	 * that's why we only allow generation of one instance (i.e. return
-	 * FALSE every time).
-	 */
-
-	cal_component_get_uid (comp, &uid);
-
-	old_uid = g_hash_table_lookup (uid_hash, uid);
-	if (old_uid)
-		return FALSE;
-
-	g_hash_table_insert (uid_hash, (char *) uid, NULL);
-	return FALSE;
-}
-
-/* Populates a hash table with the UIDs of the components that occur or recur
- * within a specific time range.
- */
-static void
-get_instances_in_range (GHashTable *uid_hash, GList *components, time_t start, time_t end)
-{
-	GList *l;
-
-	for (l = components; l; l = l->next) {
-		CalComponent *comp;
-
-		comp = CAL_COMPONENT (l->data);
-		cal_recur_generate_instances (comp, start, end, add_instance, uid_hash);
-	}
-}
-
-/* Used from g_hash_table_foreach(), adds a UID from the hash table to our list */
-static void
-add_uid_to_list (gpointer key, gpointer value, gpointer data)
-{
-	GList **list;
-	const char *uid;
-	char *uid_copy;
-
-	list = data;
-
-	uid = key;
-	uid_copy = g_strdup (uid);
-
-	*list = g_list_prepend (*list, uid_copy);
-}
-
-/* Get_objects_in_range handler for the file backend */
-static GList *
-cal_backend_file_get_objects_in_range (CalBackend *backend, CalObjType type,
-				       time_t start, time_t end)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-	GList *event_list;
-	GHashTable *uid_hash;
-
-	cbfile = CAL_BACKEND_FILE (backend);
-	priv = cbfile->priv;
-
-	g_return_val_if_fail (priv->icalcomp != NULL, NULL);
-
-	g_return_val_if_fail (start != -1 && end != -1, NULL);
-	g_return_val_if_fail (start <= end, NULL);
-
-	uid_hash = g_hash_table_new (g_str_hash, g_str_equal);
-
-	if (type & CALOBJ_TYPE_EVENT)
-		get_instances_in_range (uid_hash, priv->events, start, end);
-
-	if (type & CALOBJ_TYPE_TODO)
-		get_instances_in_range (uid_hash, priv->todos, start, end);
-
-	if (type & CALOBJ_TYPE_JOURNAL)
-		get_instances_in_range (uid_hash, priv->journals, start, end);
-
-	event_list = NULL;
-	g_hash_table_foreach (uid_hash, add_uid_to_list, &event_list);
-	g_hash_table_destroy (uid_hash);
-
-	return event_list;
-}
-
-/* Get_alarms_in_range handler for the file backend */
-static GList *
-cal_backend_file_get_alarms_in_range (CalBackend *backend, time_t start, time_t end)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-
-	cbfile = CAL_BACKEND_FILE (backend);
-	priv = cbfile->priv;
-
-	g_return_val_if_fail (priv->icalcomp != NULL, NULL);
-
-	g_return_val_if_fail (start != -1 && end != -1, NULL);
-	g_return_val_if_fail (start <= end, NULL);
-
-	/* FIXME: have to deal with an unknown number of alarms; we can't just
-	 * do the same thing as in cal-backend-imc.
-	 */
-	return NULL;
-}
-
-/* Get_alarms_for_object handler for the file backend */
-static gboolean
-cal_backend_file_get_alarms_for_object (CalBackend *backend, const char *uid,
-					time_t start, time_t end,
-					GList **alarms)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-
-	cbfile = CAL_BACKEND_FILE (backend);
-	priv = cbfile->priv;
-
-	g_return_val_if_fail (priv->icalcomp != NULL, FALSE);
-
-	g_return_val_if_fail (uid != NULL, FALSE);
-	g_return_val_if_fail (start != -1 && end != -1, FALSE);
-	g_return_val_if_fail (start <= end, FALSE);
-	g_return_val_if_fail (alarms != NULL, FALSE);
-
-	/* FIXME */
-
-	*alarms = NULL;
-	return FALSE;
-}
-
-/* Notifies a backend's clients that an object was updated */
-static void
-notify_update (CalBackendFile *cbfile, const char *uid)
-{
-	CalBackendFilePrivate *priv;
-	GList *l;
-
-	priv = cbfile->priv;
-
-	for (l = priv->clients; l; l = l->next) {
-		Cal *cal;
-
-		cal = CAL (l->data);
-		cal_notify_update (cal, uid);
-	}
-}
-
-/* Notifies a backend's clients that an object was removed */
-static void
-notify_remove (CalBackendFile *cbfile, const char *uid)
-{
-	CalBackendFilePrivate *priv;
-	GList *l;
-
-	priv = cbfile->priv;
-
-	for (l = priv->clients; l; l = l->next) {
-		Cal *cal;
-
-		cal = CAL (l->data);
-		cal_notify_remove (cal, uid);
-	}
-}
-
-/* Update_object handler for the file backend */
-static gboolean
-cal_backend_file_update_object (CalBackend *backend, const char *uid, const char *calobj)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-	icalcomponent *icalcomp;
-	icalcomponent_kind kind;
-	CalComponent *old_comp;
-	CalComponent *comp;
-	const char *comp_uid;
-
-	cbfile = CAL_BACKEND_FILE (backend);
-	priv = cbfile->priv;
-
-	g_return_val_if_fail (priv->icalcomp != NULL, FALSE);
-
-	g_return_val_if_fail (uid != NULL, FALSE);
-	g_return_val_if_fail (calobj != NULL, FALSE);
-
-	/* Pull the component from the string and ensure that it is sane */
-
-	icalcomp = icalparser_parse_string ((char *) calobj);
-
-	if (!icalcomp)
-		return FALSE;
-
-	kind = icalcomponent_isa (icalcomp);
-
-	if (!(kind == ICAL_VEVENT_COMPONENT
-	      || kind == ICAL_VTODO_COMPONENT
-	      || kind == ICAL_VJOURNAL_COMPONENT)) {
-		/* We don't support this type of component */
-		icalcomponent_free (icalcomp);
-		return FALSE;
-	}
-
-	comp = cal_component_new ();
-	if (!cal_component_set_icalcomponent (comp, icalcomp)) {
-		gtk_object_unref (GTK_OBJECT (comp));
-		icalcomponent_free (icalcomp);
-		return FALSE;
-	}
-
-	/* Check the UID for sanity's sake */
-
-	cal_component_get_uid (comp, &comp_uid);
-
-	if (strcmp (uid, comp_uid) != 0) {
-		gtk_object_unref (GTK_OBJECT (comp));
-		return FALSE;
-	}
-
-	/* Update the component */
-
-	old_comp = lookup_component (cbfile, uid);
-
-	if (old_comp)
-		remove_component (cbfile, old_comp);
-
-	add_component (cbfile, comp, TRUE);
-
-	mark_dirty (cbfile);
-
-	/* FIXME: do the notification asynchronously */
-	notify_update (cbfile, comp_uid);
-
-	return TRUE;
-}
-
-/* Remove_object handler for the file backend */
-static gboolean
-cal_backend_file_remove_object (CalBackend *backend, const char *uid)
-{
-	CalBackendFile *cbfile;
-	CalBackendFilePrivate *priv;
-	CalComponent *comp;
-
-	cbfile = CAL_BACKEND_FILE (backend);
-	priv = cbfile->priv;
-
-	g_return_val_if_fail (priv->icalcomp != NULL, FALSE);
-
-	g_return_val_if_fail (uid != NULL, FALSE);
-
-	comp = lookup_component (cbfile, uid);
-	if (!comp)
-		return FALSE;
-
-	remove_component (cbfile, comp);
-	mark_dirty (cbfile);
-
-	/* FIXME: do the notification asynchronously */
-	notify_remove (cbfile, uid);
-
-	return TRUE;
-}
-