Moved to the pcs/ directory - Federico

svn path=/trunk/; revision=2005

1 files changed, 0 insertions, 1083 deletions

diff --git a/calendar/cal-backend.c b/calendar/cal-backend.c
deleted file mode 100644
index 570c4dccdc..0000000000
--- a/calendar/cal-backend.c
+++ /dev/null
@@ -1,1083 +0,0 @@
-/* Evolution calendar 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-backend.h"
-#include "calobj.h"
-#include "../libversit/vcc.h"
-#include "icalendar.h"
-
-
-
-/* VCalendar product ID */
-#define PRODID "-//Helix Code//NONSGML Tlacuache//EN"
-
-
-
-/* Private part of the CalBackend structure */
-typedef struct {
-	/* URI where the calendar data is stored */
-	GnomeVFSURI *uri;
-
-        /* format of this calendar (ical or vcal) */
-	CalendarFormat format;
-
-	/* List of Cal objects with their listeners */
-	GList *clients;
-
-	/* All the iCalObject structures in the calendar, hashed by UID.  The
-	 * hash key *is* icalobj->uid; it is not copied, so don't free it when
-	 * you remove an object from the hash table.
-	 */
-	GHashTable *object_hash;
-
-	/* All events, TODOs, and journals in the calendar */
-	GList *events;
-	GList *todos;
-	GList *journals;
-
-	/* Whether a calendar has been loaded */
-	guint loaded : 1;
-} CalBackendPrivate;
-
-
-
-static void cal_backend_class_init (CalBackendClass *class);
-static void cal_backend_init (CalBackend *backend);
-static void cal_backend_destroy (GtkObject *object);
-
-static GtkObjectClass *parent_class;
-
-
-
-/**
- * cal_backend_get_type:
- * @void:
- *
- * Registers the #CalBackend class if necessary, and returns the type ID
- * associated to it.
- *
- * Return value: The type ID of the #CalBackend class.
- **/
-GtkType
-cal_backend_get_type (void)
-{
-	static GtkType cal_backend_type = 0;
-
-	if (!cal_backend_type) {
-		static const GtkTypeInfo cal_backend_info = {
-			"CalBackend",
-			sizeof (CalBackend),
-			sizeof (CalBackendClass),
-			(GtkClassInitFunc) cal_backend_class_init,
-			(GtkObjectInitFunc) cal_backend_init,
-			NULL, /* reserved_1 */
-			NULL, /* reserved_2 */
-			(GtkClassInitFunc) NULL
-		};
-
-		cal_backend_type = gtk_type_unique (GTK_TYPE_OBJECT, &cal_backend_info);
-	}
-
-	return cal_backend_type;
-}
-
-/* Class initialization function for the calendar backend */
-static void
-cal_backend_class_init (CalBackendClass *class)
-{
-	GtkObjectClass *object_class;
-
-	object_class = (GtkObjectClass *) class;
-
-	parent_class = gtk_type_class (GTK_TYPE_OBJECT);
-
-	object_class->destroy = cal_backend_destroy;
-}
-
-/* Object initialization function for the calendar backend */
-static void
-cal_backend_init (CalBackend *backend)
-{
-	CalBackendPrivate *priv;
-
-	priv = g_new0 (CalBackendPrivate, 1);
-	backend->priv = priv;
-
-	/* FIXME can be CAL_VCAL or CAL_ICAL */
-	priv->format = CAL_VCAL;
-}
-
-/* Saves a calendar */
-static void
-save (CalBackend *backend)
-{
-	/* FIXME */
-}
-
-/* g_hash_table_foreach() callback to destroy an iCalObject */
-static void
-free_ical_object (gpointer key, gpointer value, gpointer data)
-{
-	iCalObject *ico;
-
-	ico = value;
-	ical_object_destroy (ico);
-}
-
-/* Destroys a backend's data */
-static void
-destroy (CalBackend *backend)
-{
-	CalBackendPrivate *priv;
-
-	priv = backend->priv;
-
-	if (priv->uri) {
-		gnome_vfs_uri_unref (priv->uri);
-		priv->uri = NULL;
-	}
-
-	g_assert (priv->clients == NULL);
-
-	if (priv->object_hash) {
-		g_hash_table_foreach (priv->object_hash, free_ical_object, NULL);
-		g_hash_table_destroy (priv->object_hash);
-		priv->object_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;
-
-	priv->loaded = FALSE;
-}
-
-/* Destroy handler for the calendar backend */
-static void
-cal_backend_destroy (GtkObject *object)
-{
-	CalBackend *backend;
-	CalBackendPrivate *priv;
-
-	g_return_if_fail (object != NULL);
-	g_return_if_fail (IS_CAL_BACKEND (object));
-
-	backend = CAL_BACKEND (object);
-	priv = backend->priv;
-
-	if (priv->loaded)
-		save (backend);
-
-	destroy (backend);
-
-	g_free (priv);
-
-	if (GTK_OBJECT_CLASS (parent_class)->destroy)
-		(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
-}
-
-
-
-/* iCalObject manipulation functions */
-
-/* Looks up an object by its UID in the backend's object hash table */
-static iCalObject *
-lookup_object (CalBackend *backend, const char *uid)
-{
-	CalBackendPrivate *priv;
-	iCalObject *ico;
-
-	priv = backend->priv;
-	ico = g_hash_table_lookup (priv->object_hash, uid);
-
-	return ico;
-}
-
-/* Ensures that an iCalObject has a unique identifier.  If it doesn't have one,
- * it will create one for it.  Returns whether an UID was created or not.
- */
-static gboolean
-ensure_uid (iCalObject *ico)
-{
-	char *buf;
-	gulong str_time;
-	static guint seqno = 0;
-
-	if (ico->uid)
-		return FALSE;
-
-	str_time = (gulong) time (NULL);
-
-	/* Is this good enough? */
-
-	buf = g_strdup_printf ("Evolution-Tlacuache-%d-%ld-%u", (int) getpid(), str_time, seqno++);
-	ico->uid = buf;
-
-	return TRUE;
-}
-
-/* Adds an object to the calendar backend.  Does *not* perform notification to
- * calendar clients.
- */
-static void
-add_object (CalBackend *backend, iCalObject *ico)
-{
-	CalBackendPrivate *priv;
-
-	g_assert (ico != NULL);
-	priv = backend->priv;
-
-#if 0
-	/* FIXME: gnomecal old code */
-	ico->new = 0;
-#endif
-
-	if (ensure_uid (ico))
-		/* FIXME: mark the calendar as dirty so that we can re-save it
-		 * with the object's new UID.
-		 */
-		;
-
-	g_hash_table_insert (priv->object_hash, ico->uid, ico);
-
-	switch (ico->type) {
-	case ICAL_EVENT:
-		priv->events = g_list_prepend (priv->events, ico);
-#if 0
-		/* FIXME: gnomecal old code */
-		ical_object_try_alarms (ico);
-#  ifdef DEBUGGING_MAIL_ALARM
-		ico->malarm.trigger = 0;
-		calendar_notify (0, ico);
-#  endif
-#endif
-		break;
-
-	case ICAL_TODO:
-		priv->todos = g_list_prepend (priv->todos, ico);
-		break;
-
-	case ICAL_JOURNAL:
-		priv->journals = g_list_prepend (priv->journals, ico);
-		break;
-
-	default:
-		g_assert_not_reached ();
-	}
-
-#if 0
-	/* FIXME: gnomecal old code */
-	ico->last_mod = time (NULL);
-#endif
-}
-
-/* Removes an object from the backend's hash and lists.  Does not perform
- * notification on the clients.
- */
-static void
-remove_object (CalBackend *backend, iCalObject *ico)
-{
-	CalBackendPrivate *priv;
-	GList **list, *l;
-
-	priv = backend->priv;
-
-	g_assert (ico->uid != NULL);
-	g_hash_table_remove (priv->object_hash, ico->uid);
-
-	switch (ico->type) {
-	case ICAL_EVENT:
-		list = &priv->events;
-		break;
-
-	case ICAL_TODO:
-		list = &priv->todos;
-		break;
-
-	case ICAL_JOURNAL:
-		list = &priv->journals;
-		break;
-
-	default:
-		list = NULL;
-	}
-
-	if (!list)
-		return;
-
-	l = g_list_find (*list, ico);
-	g_assert (l != NULL);
-
-	*list = g_list_remove_link (*list, l);
-	g_list_free_1 (l);
-
-	ical_object_destroy (ico);
-}
-
-/* Load a calendar from a VObject */
-static void
-load_from_vobject (CalBackend *backend, VObject *vobject)
-{
-	CalBackendPrivate *priv;
-	VObjectIterator i;
-
-	priv = backend->priv;
-
-	g_assert (!priv->loaded);
-	g_assert (priv->object_hash == NULL);
-	priv->object_hash = g_hash_table_new (g_str_hash, g_str_equal);
-
-	initPropIterator (&i, vobject);
-
-	while (moreIteration (&i)) {
-		VObject *this;
-		iCalObject *ical;
-		const char *object_name;
-
-		this = nextVObject (&i);
-		object_name = vObjectName (this);
-#if 0
-		/* FIXME?  What is this used for in gnomecal? */
-		if (strcmp (object_name, VCDCreatedProp) == 0) {
-			cal->created = time_from_isodate (str_val (this));
-			continue;
-		}
-#endif
-		if (strcmp (object_name, VCLocationProp) == 0)
-			continue; /* FIXME: imlement */
-
-		if (strcmp (object_name, VCProdIdProp) == 0)
-			continue; /* FIXME: implement */
-
-		if (strcmp (object_name, VCVersionProp) == 0)
-			continue; /* FIXME: implement */
-
-		if (strcmp (object_name, VCTimeZoneProp) == 0)
-			continue; /* FIXME: implement */
-
-		ical = ical_object_create_from_vobject (this, object_name);
-
-		/* FIXME: some broken files may have duplicated UIDs.  This is
-		 * Bad(tm).  Deal with it by creating new UIDs for them and
-		 * spitting some messages to the console.
-		 */
-
-		if (ical)
-			add_object (backend, ical);
-	}
-}
-
-/* Creates a VObject with the base information of a calendar */
-static VObject *
-get_calendar_base_vobject (CalBackend *backend)
-{
-	VObject *vobj;
-	time_t now;
-	struct tm tm;
-
-	/* We call localtime for the side effect of setting tzname */
-
-	now = time (NULL);
-	tm = *localtime (&now);
-
-	vobj = newVObject (VCCalProp);
-
-	addPropValue (vobj, VCProdIdProp, PRODID);
-
-#if defined (HAVE_TM_ZONE)
-	addPropValue (vobj, VCTimeZoneProp, tm.tm_zone);
-#elif defined (HAVE_TZNAME)
-	addPropValue (vobj, VCTimeZoneProp, tzname[0]);
-#endif
-
-	/* Per the vCalendar spec, this must be "1.0" */
-	addPropValue (vobj, VCVersionProp, "1.0");
-
-	return vobj;
-}
-
-/* Builds the string representation of a complete calendar object wrapping the
- * specified object --- a complete calendar is needed because of the timezone
- * information.  The return value must be freed with free(), not g_free(), since
- * the internal implementation calls writeMemVObject() from libversit, which
- * uses realloc() to allocate this string.
- */
-static char *
-string_from_ical_object (CalBackend *backend, iCalObject *ico)
-{
-	VObject *vcalobj, *vobj;
-	char *buf;
-
-	vcalobj = get_calendar_base_vobject (backend);
-	vobj = ical_object_to_vobject (ico);
-	addVObjectProp (vcalobj, vobj);
-
-	buf = writeMemVObject (NULL, NULL, vcalobj);
-
-	cleanVObject (vcalobj);
-	cleanStrTbl ();
-
-	return buf;
-}
-
-
-
-/**
- * cal_backend_new:
- * @void:
- *
- * Creates a new empty calendar backend.  A calendar must then be loaded or
- * created before the backend can be used.
- *
- * Return value: A newly-created calendar backend.
- **/
-CalBackend *
-cal_backend_new (void)
-{
-	return CAL_BACKEND (gtk_type_new (CAL_BACKEND_TYPE));
-}
-
-/**
- * cal_backend_get_uri:
- * @backend: A calendar backend.
- *
- * Queries the URI of a calendar backend, which must already have a loaded
- * calendar.
- *
- * Return value: The URI where the calendar is stored.
- **/
-GnomeVFSURI *
-cal_backend_get_uri (CalBackend *backend)
-{
-	CalBackendPrivate *priv;
-
-	g_return_val_if_fail (backend != NULL, NULL);
-	g_return_val_if_fail (IS_CAL_BACKEND (backend), NULL);
-
-	priv = backend->priv;
-	g_return_val_if_fail (priv->loaded, 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;
-	CalBackend *backend;
-	CalBackendPrivate *priv;
-	GList *l;
-
-	cal = CAL (object);
-
-	backend = CAL_BACKEND (data);
-	priv = backend->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, the backend can go away, too.  Commit
-         * suicide here.
-	 */
-
-	if (!priv->clients)
-		gtk_object_unref (GTK_OBJECT (backend));
-}
-
-/**
- * cal_backend_add_cal:
- * @backend: A calendar backend.
- * @cal: A calendar client interface object.
- *
- * Adds a calendar client interface object to a calendar @backend.  The calendar
- * backend must already have a loaded calendar.
- **/
-void
-cal_backend_add_cal (CalBackend *backend, Cal *cal)
-{
-	CalBackendPrivate *priv;
-
-	g_return_if_fail (backend != NULL);
-	g_return_if_fail (IS_CAL_BACKEND (backend));
-
-	priv = backend->priv;
-	g_return_if_fail (priv->loaded);
-
-	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);
-}
-
-
-static icalcomponent* 
-icalendar_parse_file (char* fname)
-{
-	FILE* fp;
-	icalcomponent* comp = NULL;
-	gchar* str;
-	struct stat st;
-	int n;
-	
-	fp = fopen (fname, "r");
-	if (!fp) {
-		g_warning ("Cannot open open calendar file.");
-		return NULL;
-	}
-	
-	stat (fname, &st);
-	
-	str = g_malloc (st.st_size + 2);
-	
-	n = fread ((gchar*) str, 1, st.st_size, fp);
-	if (n != st.st_size) {
-		g_warning ("Read error.");
-	}
-	str[n] = '\0';
-
-	fclose (fp);
-	
-	comp = icalparser_parse_string (str);
-	g_free (str);
-	
-	return comp;
-}
-
-
-static void
-icalendar_calendar_load (CalBackend * cal, char* fname)
-{
-	icalcomponent *comp;
-	icalcomponent *subcomp;
-	iCalObject    *ical;
-
-	comp = icalendar_parse_file (fname);
-	subcomp = icalcomponent_get_first_component (comp,
-						     ICAL_ANY_COMPONENT);
-	while (subcomp) {
-		ical = ical_object_create_from_icalcomponent (subcomp);
-		if (ical->type != ICAL_EVENT && 
-		    ical->type != ICAL_TODO  &&
-		    ical->type != ICAL_JOURNAL) {
-			g_warning ("Skipping unsupported iCalendar component.");
-		} else
-			add_object (cal, ical);
-		subcomp = icalcomponent_get_next_component (comp,
-							    ICAL_ANY_COMPONENT);
-	}
-}
-
-
-/*
-ics is to be used to designate a file containing (an arbitrary set of)
-calendaring and scheduling information.
-
-ifb is to be used to designate a file containing free or busy time
-information.
-
-anything else is assumed to be a vcal file.
-*/
-
-static CalendarFormat
-cal_get_type_from_filename (char *str_uri)
-{
-	int len;
-
-	if (str_uri == NULL)
-		return CAL_VCAL;
-
-	len = strlen (str_uri);
-	if (len < 5)
-		return CAL_VCAL;
-
-	if (str_uri[ len-4 ] == '.' &&
-	    str_uri[ len-3 ] == 'i' &&
-	    str_uri[ len-2 ] == 'c' &&
-	    str_uri[ len-1 ] == 's')
-		return CAL_ICAL;
-
-	if (str_uri[ len-4 ] == '.' &&
-	    str_uri[ len-3 ] == 'i' &&
-	    str_uri[ len-2 ] == 'f' &&
-	    str_uri[ len-1 ] == 'b')
-		return CAL_ICAL;
-
-	return CAL_VCAL;
-}
-
-
-/**
- * cal_backend_load:
- * @backend: A calendar backend.
- * @uri: URI that contains the calendar data.
- *
- * Loads a calendar backend with data from a calendar stored at the specified
- * URI.
- *
- * Return value: An operation status code.
- **/
-CalBackendLoadStatus
-cal_backend_load (CalBackend *backend, GnomeVFSURI *uri)
-{
-	CalBackendPrivate *priv;
-	VObject *vobject;
-	char *str_uri;
-
-	g_return_val_if_fail (backend != NULL, CAL_BACKEND_LOAD_ERROR);
-	g_return_val_if_fail (IS_CAL_BACKEND (backend), CAL_BACKEND_LOAD_ERROR);
-
-	priv = backend->priv;
-	g_return_val_if_fail (!priv->loaded, CAL_BACKEND_LOAD_ERROR);
-
-	g_return_val_if_fail (uri != NULL, CAL_BACKEND_LOAD_ERROR);
-
-	/* FIXME: this looks rather bad; maybe we should check for local files
-	 * and fail if they are remote.
-	 */
-
-	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));
-
-
-	/* look at the extension on the filename and decide
-	   if this is a ical or vcal file */
-
-	priv->format = cal_get_type_from_filename (str_uri);
-
-	/* load */
-
-	switch (priv->format) {
-	case CAL_VCAL:
-	        vobject = Parse_MIME_FromFileName (str_uri);
-	
-		if (!vobject)
-		  return CAL_BACKEND_LOAD_ERROR;
-	
-		load_from_vobject (backend, vobject);
-		cleanVObject (vobject);
-		cleanStrTbl ();
-	break;
-	case CAL_ICAL:
-		icalendar_calendar_load (backend, str_uri);
-		break;
-	default:
-	        return CAL_BACKEND_LOAD_ERROR;
-	}
-
-	g_free (str_uri);
-
-	gnome_vfs_uri_ref (uri);
-
-	priv->uri = uri;
-	priv->loaded = TRUE;
-	return CAL_BACKEND_LOAD_SUCCESS;
-}
-
-/**
- * cal_backend_create:
- * @backend: A calendar backend.
- * @uri: URI that will contain the calendar data.
- *
- * Creates a new empty calendar in a calendar backend.
- **/
-void
-cal_backend_create (CalBackend *backend, GnomeVFSURI *uri)
-{
-	CalBackendPrivate *priv;
-
-	g_return_if_fail (backend != NULL);
-	g_return_if_fail (IS_CAL_BACKEND (backend));
-
-	priv = backend->priv;
-	g_return_if_fail (!priv->loaded);
-
-	g_return_if_fail (uri != NULL);
-
-	/* Create the new calendar information */
-
-	g_assert (priv->object_hash == NULL);
-	priv->object_hash = g_hash_table_new (g_str_hash, g_str_equal);
-
-	/* Done */
-
-	gnome_vfs_uri_ref (uri);
-
-	priv->uri = uri;
-	priv->loaded = TRUE;
-}
-
-/**
- * cal_backend_get_object:
- * @backend: A calendar backend.
- * @uid: Unique identifier for a calendar object.
- *
- * Queries a calendar backend for a calendar object based on its unique
- * identifier.
- *
- * Return value: The string representation of a complete calendar wrapping the
- * the sought object, or NULL if no object had the specified UID.  A complete
- * calendar is returned because you also need the timezone data.
- **/
-char *
-cal_backend_get_object (CalBackend *backend, const char *uid)
-{
-	CalBackendPrivate *priv;
-	iCalObject *ico;
-	char *buf, *retval;
-
-	g_return_val_if_fail (backend != NULL, NULL);
-	g_return_val_if_fail (IS_CAL_BACKEND (backend), NULL);
-
-	priv = backend->priv;
-	g_return_val_if_fail (priv->loaded, NULL);
-
-	g_return_val_if_fail (uid != NULL, NULL);
-
-	g_assert (priv->object_hash != NULL);
-
-	ico = lookup_object (backend, uid);
-
-	if (!ico)
-		return NULL;
-
-	/* string_from_ical_object() uses writeMemVObject(), which uses
-	 * realloc(), so we must free its result with free() instead of
-	 * g_free().  We take a copy of the result so that callers can use the
-	 * normal glib function to free it.
-	 */
-
-	buf = string_from_ical_object (backend, ico);
-	retval = g_strdup (buf);
-	free (buf);
-
-	return retval;
-}
-
-struct get_uids_closure {
-	CalObjType type;
-	GList *uid_list;
-};
-
-/* Builds a list of UIDs for objects that match the sought type.  Called from
- * g_hash_table_foreach().
- */
-static void
-build_uids_list (gpointer key, gpointer value, gpointer data)
-{
-	iCalObject *ico;
-	struct get_uids_closure *c;
-	gboolean store;
-
-	ico = value;
-	c = data;
-
-	store = FALSE;
-
-	if (c->type & CALOBJ_TYPE_ANY)
-		store = TRUE;
-	else if (ico->type == ICAL_EVENT)
-		store = (c->type & CALOBJ_TYPE_EVENT) ? TRUE : FALSE;
-	else if (ico->type == ICAL_TODO)
-		store = (c->type & CALOBJ_TYPE_TODO) ? TRUE : FALSE;
-	else if (ico->type == ICAL_JOURNAL)
-		store = (c->type & CALOBJ_TYPE_JOURNAL) ? TRUE : FALSE;
-	else
-		store = (c->type & CALOBJ_TYPE_OTHER) ? TRUE : FALSE;
-
-	if (store)
-		c->uid_list = g_list_prepend (c->uid_list, g_strdup (ico->uid));
-}
-
-/**
- * cal_backend_get_uids:
- * @backend: A calendar backend.
- * @type: Bitmask with types of objects to return.
- *
- * Builds a list of unique identifiers corresponding to calendar objects whose
- * type matches one of the types specified in the @type flags.
- *
- * Return value: A list of strings that are the sought UIDs.
- **/
-GList *
-cal_backend_get_uids (CalBackend *backend, CalObjType type)
-{
-	CalBackendPrivate *priv;
-	struct get_uids_closure c;
-
-	g_return_val_if_fail (backend != NULL, NULL);
-	g_return_val_if_fail (IS_CAL_BACKEND (backend), NULL);
-
-	priv = backend->priv;
-	g_return_val_if_fail (priv->loaded, NULL);
-
-	/* We go through the hash table instead of the lists of particular
-	 * object types so that we can pick up CALOBJ_TYPE_OTHER objects.
-	 */
-
-	c.type = type;
-	c.uid_list = NULL;
-	g_hash_table_foreach (priv->object_hash, build_uids_list, &c);
-
-	return c.uid_list;
-}
-
-struct build_event_list_closure {
-	CalBackend *backend;
-	GList *event_list;
-};
-
-/* Builds a sorted list of event object instances.  Used as a callback from
- * ical_object_generate_events().
- */
-static int
-build_event_list (iCalObject *ico, time_t start, time_t end, void *data)
-{
-	CalObjInstance *icoi;
-	struct build_event_list_closure *c;
-
-	c = data;
-
-	icoi = g_new (CalObjInstance, 1);
-
-	g_assert (ico->uid != NULL);
-	icoi->uid = g_strdup (ico->uid);
-	icoi->calobj = string_from_ical_object (c->backend, ico);
-	icoi->start = start;
-	icoi->end = end;
-
-	c->event_list = g_list_prepend (c->event_list, icoi);
-
-	return TRUE;
-}
-
-/* Compares two CalObjInstance structures by their start times.  Called from
- * g_list_sort().
- */
-static gint
-compare_instance_func (gconstpointer a, gconstpointer b)
-{
-	const CalObjInstance *ca, *cb;
-	time_t diff;
-
-	ca = a;
-	cb = b;
-
-	diff = ca->start - cb->start;
-	return (diff < 0) ? -1 : (diff > 0) ? 1 : 0;
-}
-
-/**
- * cal_backend_get_events_in_range:
- * @backend: A calendar backend.
- * @start: Start time for query.
- * @end: End time for query.
- *
- * Builds a sorted list of calendar event object instances that occur or recur
- * within the specified time range.  Each object instance contains the object
- * itself and the start/end times at which it occurs or recurs.
- *
- * Return value: A list of calendar event object instances, sorted by their
- * start times.
- **/
-GList *
-cal_backend_get_events_in_range (CalBackend *backend, time_t start, time_t end)
-{
-	CalBackendPrivate *priv;
-	struct build_event_list_closure c;
-	GList *l;
-
-	g_return_val_if_fail (backend != NULL, NULL);
-	g_return_val_if_fail (IS_CAL_BACKEND (backend), NULL);
-
-	priv = backend->priv;
-	g_return_val_if_fail (priv->loaded, NULL);
-
-	g_return_val_if_fail (start != -1 && end != -1, NULL);
-	g_return_val_if_fail (start <= end, NULL);
-
-	c.backend = backend;
-	c.event_list = NULL;
-
-	for (l = priv->events; l; l = l->next) {
-		iCalObject *ico;
-
-		ico = l->data;
-		ical_object_generate_events (ico, start, end, build_event_list, &c);
-	}
-
-	c.event_list = g_list_sort (c.event_list, compare_instance_func);
-	return c.event_list;
-}
-
-/* Notifies a backend's clients that an object was updated */
-static void
-notify_update (CalBackend *backend, const char *uid)
-{
-	CalBackendPrivate *priv;
-	GList *l;
-
-	priv = backend->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 (CalBackend *backend, const char *uid)
-{
-	CalBackendPrivate *priv;
-	GList *l;
-
-	priv = backend->priv;
-
-	for (l = priv->clients; l; l = l->next) {
-		Cal *cal;
-
-		cal = CAL (l->data);
-		cal_notify_remove (cal, uid);
-	}
-}
-
-/**
- * cal_backend_update_object:
- * @backend: A calendar backend.
- * @uid: Unique identifier of the object to update.
- * @calobj: String representation of the new calendar object.
- * 
- * Updates an object in a calendar backend.  It will replace any existing object
- * that has the same UID as the specified one.  The backend will in turn notify
- * all of its clients about the change.
- * 
- * Return value: TRUE on success, FALSE on being passed an invalid object.
- **/
-gboolean
-cal_backend_update_object (CalBackend *backend, const char *uid, const char *calobj)
-{
-	CalBackendPrivate *priv;
-	iCalObject *ico, *new_ico;
-	CalObjFindStatus status;
-
-	g_return_val_if_fail (backend != NULL, FALSE);
-	g_return_val_if_fail (IS_CAL_BACKEND (backend), FALSE);
-
-	priv = backend->priv;
-	g_return_val_if_fail (priv->loaded, FALSE);
-	
-	g_return_val_if_fail (uid != NULL, FALSE);
-	g_return_val_if_fail (calobj != NULL, FALSE);
-
-	/* Pull the object from the string */
-
-	status = ical_object_find_in_string (uid, calobj, &new_ico);
-
-	if (status != CAL_OBJ_FIND_SUCCESS)
-		return FALSE;
-
-	/* Update the object */
-
-	ico = lookup_object (backend, uid);
-
-	if (ico)
-		remove_object (backend, ico);
-
-	add_object (backend, new_ico);
-
-	/* FIXME: do the notification asynchronously */
-
-	notify_update (backend, new_ico->uid);
-	return TRUE;
-}
-
-/**
- * cal_backend_remove_object:
- * @backend: A calendar backend.
- * @uid: Unique identifier of the object to remove.
- * 
- * Removes an object in a calendar backend.  The backend will notify all of its
- * clients about the change.
- * 
- * Return value: TRUE on success, FALSE on being passed an UID for an object
- * that does not exist in the backend.
- **/
-gboolean
-cal_backend_remove_object (CalBackend *backend, const char *uid)
-{
-	CalBackendPrivate *priv;
-	iCalObject *ico;
-
-	g_return_val_if_fail (backend != NULL, FALSE);
-	g_return_val_if_fail (IS_CAL_BACKEND (backend), FALSE);
-
-	priv = backend->priv;
-	g_return_val_if_fail (priv->loaded, FALSE);
-	
-	g_return_val_if_fail (uid != NULL, FALSE);
-
-	ico = lookup_object (backend, uid);
-	if (!ico)
-		return FALSE;
-
-	remove_object (backend, ico);
-
-	/* FIXME: do the notification asynchronously */
-
-	notify_remove (backend, uid);
-	return TRUE;
-}