diff options
Diffstat (limited to 'calendar/pcs/cal-backend.c')
| -rw-r--r-- | calendar/pcs/cal-backend.c | 167 |
1 files changed, 22 insertions, 145 deletions
diff --git a/calendar/pcs/cal-backend.c b/calendar/pcs/cal-backend.c index b51452c793..a8c6aa9776 100644 --- a/calendar/pcs/cal-backend.c +++ b/calendar/pcs/cal-backend.c @@ -28,7 +28,6 @@ #include <gnome-xml/parserInternals.h> #include <gnome-xml/xmlmemory.h> -#include "e-util/e-dbhash.h" #include "cal-backend.h" #include "libversit/vcc.h" @@ -230,150 +229,6 @@ cal_backend_get_uids (CalBackend *backend, CalObjType type) return (* CLASS (backend)->get_uids) (backend, type); } -typedef struct -{ - CalBackend *backend; - GList *changes; - GList *change_ids; -} CalBackendComputeChangesData; - -static void -cal_backend_compute_changes_foreach_key (const char *key, gpointer data) -{ - CalBackendComputeChangesData *be_data = data; - char *calobj = cal_backend_get_object (be_data->backend, key); - - if (calobj == NULL) { - CalComponent *comp; - GNOME_Evolution_Calendar_CalObjChange *coc; - - comp = cal_component_new (); - cal_component_set_new_vtype (comp, CAL_COMPONENT_TODO); - cal_component_set_uid (comp, key); - - coc = GNOME_Evolution_Calendar_CalObjChange__alloc (); - coc->calobj = CORBA_string_dup (cal_component_get_as_string (comp)); - coc->type = GNOME_Evolution_Calendar_DELETED; - be_data->changes = g_list_prepend (be_data->changes, coc); - be_data->change_ids = g_list_prepend (be_data->change_ids, (gpointer) key); - } -} - -static GNOME_Evolution_Calendar_CalObjChangeSeq * -cal_backend_compute_changes (CalBackend *backend, CalObjType type, const char *change_id) -{ - char *filename; - EDbHash *ehash; - CalBackendComputeChangesData be_data; - GNOME_Evolution_Calendar_CalObjChangeSeq *seq; - GList *uids, *changes = NULL, *change_ids = NULL; - GList *i, *j; - int n; - - /* Find the changed ids - FIX ME, path should not be hard coded */ - if (type == GNOME_Evolution_Calendar_TYPE_TODO) - filename = g_strdup_printf ("%s/evolution/local/Tasks/%s.db", g_get_home_dir (), change_id); - else - filename = g_strdup_printf ("%s/evolution/local/Calendar/%s.db", g_get_home_dir (), change_id); - ehash = e_dbhash_new (filename); - g_free (filename); - - uids = cal_backend_get_uids (backend, type); - - /* Calculate adds and modifies */ - for (i = uids; i != NULL; i = i->next) { - GNOME_Evolution_Calendar_CalObjChange *coc; - char *uid = i->data; - char *calobj = cal_backend_get_object (backend, uid); - - g_assert (calobj != NULL); - - /* check what type of change has occurred, if any */ - switch (e_dbhash_compare (ehash, uid, calobj)) { - case E_DBHASH_STATUS_SAME: - break; - case E_DBHASH_STATUS_NOT_FOUND: - coc = GNOME_Evolution_Calendar_CalObjChange__alloc (); - coc->calobj = CORBA_string_dup (calobj); - coc->type = GNOME_Evolution_Calendar_ADDED; - changes = g_list_prepend (changes, coc); - change_ids = g_list_prepend (change_ids, uid); - break; - case E_DBHASH_STATUS_DIFFERENT: - coc = GNOME_Evolution_Calendar_CalObjChange__alloc (); - coc->calobj = CORBA_string_dup (calobj); - coc->type = GNOME_Evolution_Calendar_ADDED; - changes = g_list_append (changes, coc); - change_ids = g_list_prepend (change_ids, uid); - break; - } - } - - /* Calculate deletions */ - be_data.backend = backend; - be_data.changes = changes; - be_data.change_ids = change_ids; - e_dbhash_foreach_key (ehash, (EDbHashFunc)cal_backend_compute_changes_foreach_key, &be_data); - changes = be_data.changes; - change_ids = be_data.change_ids; - - /* Build the sequence and update the hash */ - n = g_list_length (changes); - - seq = GNOME_Evolution_Calendar_CalObjChangeSeq__alloc (); - seq->_length = n; - seq->_buffer = CORBA_sequence_GNOME_Evolution_Calendar_CalObjChange_allocbuf (n); - CORBA_sequence_set_release (seq, TRUE); - - for (i = changes, j = change_ids, n = 0; i != NULL; i = i->next, j = j->next, n++) { - GNOME_Evolution_Calendar_CalObjChange *coc = i->data; - GNOME_Evolution_Calendar_CalObjChange *seq_coc; - char *uid = j->data; - - /* sequence building */ - seq_coc = &seq->_buffer[n]; - seq_coc->calobj = CORBA_string_dup (coc->calobj); - seq_coc->type = coc->type; - - /* hash updating */ - if (coc->type == GNOME_Evolution_Calendar_ADDED - || coc->type == GNOME_Evolution_Calendar_MODIFIED) { - e_dbhash_add (ehash, uid, coc->calobj); - } else { - e_dbhash_remove (ehash, uid); - } - - CORBA_free (coc); - } - e_dbhash_write (ehash); - e_dbhash_destroy (ehash); - - cal_obj_uid_list_free (uids); - g_list_free (change_ids); - g_list_free (changes); - - return seq; -} - -/** - * cal_backend_get_changes: - * @backend: - * @type: - * @change_id: - * - * - * - * Return value: - **/ -GNOME_Evolution_Calendar_CalObjChangeSeq * -cal_backend_get_changes (CalBackend *backend, CalObjType type, const char *change_id) -{ - g_return_val_if_fail (backend != NULL, NULL); - g_return_val_if_fail (IS_CAL_BACKEND (backend), NULL); - - return cal_backend_compute_changes (backend, type, change_id); -} - /** * cal_backend_get_objects_in_range: @@ -402,6 +257,28 @@ cal_backend_get_objects_in_range (CalBackend *backend, CalObjType type, } /** + * cal_backend_get_changes: + * @backend: A calendar backend + * @type: Bitmask with types of objects to return. + * @change_id: A unique uid for the callers change list + * + * Builds a sequence of objects and the type of change that occurred on them since + * the last time the give change_id was seen + * + * Return value: A list of the objects that changed and the type of change + **/ +GNOME_Evolution_Calendar_CalObjChangeSeq * +cal_backend_get_changes (CalBackend *backend, CalObjType type, const char *change_id) +{ + g_return_val_if_fail (backend != NULL, NULL); + g_return_val_if_fail (IS_CAL_BACKEND (backend), NULL); + g_return_val_if_fail (change_id != NULL, NULL); + + g_assert (CLASS (backend)->get_changes != NULL); + return (* CLASS (backend)->get_changes) (backend, type, change_id); +} + +/** * cal_backend_get_alarms_in_range: * @backend: A calendar backend. * @start: Start time for query. |