diff options
Diffstat (limited to 'calendar/pcs/cal-backend.c')
| -rw-r--r-- | calendar/pcs/cal-backend.c | 498 |
1 files changed, 0 insertions, 498 deletions
diff --git a/calendar/pcs/cal-backend.c b/calendar/pcs/cal-backend.c deleted file mode 100644 index 72315e3882..0000000000 --- a/calendar/pcs/cal-backend.c +++ /dev/null @@ -1,498 +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 "cal-backend.h" -#include "calobj.h" -#include "../libversit/vcc.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; - - /* List of Cal client interface objects, each with its listener */ - 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; -} - -/* 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; - - /* FIXME: free stuff */ - - g_free (priv); - - if (GTK_OBJECT_CLASS (parent_class)->destroy) - (* GTK_OBJECT_CLASS (parent_class)->destroy) (object); -} - - - -/* iCalObject manipulation functions */ - -/* 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 -} - -/* 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); - - 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; -} - - - -/** - * 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; -} - -/** - * 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)); - - gtk_object_ref (GTK_OBJECT (cal)); - priv->clients = g_list_prepend (priv->clients, cal); -} - -/** - * cal_backend_remove_cal: - * @backend: A calendar backend. - * @cal: A calendar client interface object. - * - * Removes a calendar client interface object from a calendar backend. The - * calendar backend must already have a loaded calendar. - **/ -void -cal_backend_remove_cal (CalBackend *backend, Cal *cal) -{ - CalBackendPrivate *priv; - GList *l; - - 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)); - - l = g_list_find (priv->clients, cal); - if (!l) - return; - - gtk_object_unref (GTK_OBJECT (cal)); - priv->clients = g_list_remove_link (priv->clients, l); - g_list_free_1 (l); -} - -/** - * 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); - g_return_val_if_fail (uri != NULL, CAL_BACKEND_LOAD_ERROR); - - priv = backend->priv; - g_return_val_if_fail (!priv->loaded, 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)); - - vobject = Parse_MIME_FromFileName (str_uri); - g_free (str_uri); - - if (!vobject) - return CAL_BACKEND_LOAD_ERROR; - - load_from_vobject (backend, vobject); - cleanVObject (vobject); - cleanStrTbl (); - - gnome_vfs_uri_ref (uri); - - priv->uri = uri; - priv->loaded = TRUE; - return CAL_BACKEND_LOAD_SUCCESS; -} - -/** - * 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; - VObject *vcalobj, *vobj; - char *buf; - - 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 = g_hash_table_lookup (priv->objec_hash, uid); - - if (!ico) - return NULL; - - 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; -} |