/* This function is called recursively, since objects may be embedded in a
* single VCALENDAR component or each in its own. Returns 0 on an empty set,
* 1 -- otherwise.
*/
static int iterate_cal(icalcomponent *parent, int depth, int *count, icalcomponent **result, icalcomponent_kind kind)
{
icalcomponent *comp = NULL;
icalcompiter compiter;
if (!parent)
return 0;
/* we need to use iterators because we're calling iterate_cal recursively */
compiter = icalcomponent_begin_component(parent, ICAL_ANY_COMPONENT);
comp = icalcompiter_deref(&compiter);
for (; comp && *count; comp = icalcompiter_next(&compiter)) {
if (icalcomponent_isa(comp) == kind) {
/* FIXME: should we only consider items with category GNOKII? */
(*count)--;
}
if (!*count) {
*result = comp;
dprintf("Found component at depth %d\n", depth);
break;
}
iterate_cal(comp, depth+1, count, result, kind);
}
return 1;
}
icalcomponent *icalbdbset_fetch_match(icalset *set, icalcomponent *comp)
{
icalbdbset *bset = (icalbdbset *) set;
icalcompiter i;
struct icalbdbset_id comp_id, match_id;
icalerror_check_arg_rz((bset != 0), "bset");
comp_id = icalbdbset_get_id(comp);
for (i = icalcomponent_begin_component(bset->cluster, ICAL_ANY_COMPONENT);
icalcompiter_deref(&i) != 0; icalcompiter_next(&i)) {
icalcomponent *match = icalcompiter_deref(&i);
match_id = icalbdbset_get_id(match);
if (strcmp(comp_id.uid, match_id.uid) == 0 &&
(comp_id.recurrence_id == 0 ||
strcmp(comp_id.recurrence_id, match_id.recurrence_id) == 0)) {
/* HACK. What to do with SEQUENCE? */
icalbdbset_id_free(&match_id);
icalbdbset_id_free(&comp_id);
return match;
}
icalbdbset_id_free(&match_id);
}
icalbdbset_id_free(&comp_id);
return 0;
}
/* This removes all components except VTODOs and VTIMEZONEs from the toplevel
icalcomponent, and adds the given list of VTODO components. The list is
freed afterwards. */
static void
prepare_tasks (icalcomponent *icalcomp, GList *vtodos)
{
icalcomponent *subcomp;
GList *elem;
icalcompiter iter;
iter = icalcomponent_begin_component (icalcomp, ICAL_ANY_COMPONENT);
while ((subcomp = icalcompiter_deref (&iter)) != NULL) {
icalcomponent_kind child_kind = icalcomponent_isa (subcomp);
if (child_kind != ICAL_VTODO_COMPONENT
&& child_kind != ICAL_VTIMEZONE_COMPONENT) {
icalcompiter_next (&iter);
icalcomponent_remove_component (icalcomp, subcomp);
icalcomponent_free (subcomp);
} else {
icalcompiter_next (&iter);
}
}
for (elem = vtodos; elem; elem = elem->next) {
icalcomponent_add_component (icalcomp, elem->data);
}
g_list_free (vtodos);
}
/* This removes all components except VEVENTs and VTIMEZONEs from the toplevel */
static void
prepare_events (icalcomponent *icalcomp, GList **vtodos)
{
icalcomponent *subcomp;
icalcompiter iter;
if (vtodos)
*vtodos = NULL;
iter = icalcomponent_begin_component (icalcomp, ICAL_ANY_COMPONENT);
while ((subcomp = icalcompiter_deref (&iter)) != NULL) {
icalcomponent_kind child_kind = icalcomponent_isa (subcomp);
if (child_kind != ICAL_VEVENT_COMPONENT
&& child_kind != ICAL_VTIMEZONE_COMPONENT) {
icalcompiter_next (&iter);
icalcomponent_remove_component (icalcomp, subcomp);
if (child_kind == ICAL_VTODO_COMPONENT && vtodos)
*vtodos = g_list_prepend (*vtodos, subcomp);
else
icalcomponent_free (subcomp);
} else {
icalcompiter_next (&iter);
}
}
}
icalerrorenum icaldirset_remove_component(icalset *set, icalcomponent *comp)
{
icaldirset *dset;
icalcomponent *filecomp;
icalcompiter i;
int found = 0;
icalerror_check_arg_re((set != 0), "set", ICAL_BADARG_ERROR);
icalerror_check_arg_re((comp != 0), "comp", ICAL_BADARG_ERROR);
dset = (icaldirset *) set;
icalerror_check_arg_re((dset->cluster != 0), "Cluster pointer", ICAL_USAGE_ERROR);
filecomp = icalcluster_get_component(dset->cluster);
for (i = icalcomponent_begin_component(filecomp, ICAL_ANY_COMPONENT);
icalcompiter_deref(&i) != 0; icalcompiter_next(&i)) {
icalcomponent *this = icalcompiter_deref(&i);
if (this == comp) {
found = 1;
break;
}
}
if (found != 1) {
icalerror_warn("icaldirset_remove_component: component is not part of current cluster");
icalerror_set_errno(ICAL_USAGE_ERROR);
return ICAL_USAGE_ERROR;
}
(void)icalcluster_remove_component(dset->cluster, comp);
/* icalcluster_mark(impl->cluster); */
/* If the removal emptied the fileset, get the next fileset */
if (icalcluster_count_components(dset->cluster, ICAL_ANY_COMPONENT) == 0) {
icalerrorenum error = icaldirset_next_cluster(dset);
if (dset->cluster != 0 && error == ICAL_NO_ERROR) {
(void)icalcluster_get_first_component(dset->cluster);
} else {
/* HACK. Not strictly correct for impl->cluster==0 */
return error;
}
} else {
/* Do nothing */
}
return ICAL_NO_ERROR;
}
icalcomponent *icalbdbset_fetch(icalset *set, icalcomponent_kind kind, const char *uid)
{
icalcompiter i;
icalbdbset *bset = (icalbdbset *) set;
icalerror_check_arg_rz((bset != 0), "bset");
for (i = icalcomponent_begin_component(bset->cluster, kind);
icalcompiter_deref(&i) != 0; icalcompiter_next(&i)) {
icalcomponent *this = icalcompiter_deref(&i);
icalproperty *p = NULL;
const char *this_uid = NULL;
if (this != 0) {
if (kind == ICAL_VAGENDA_COMPONENT) {
p = icalcomponent_get_first_property(this, ICAL_RELCALID_PROPERTY);
if (p != NULL) {
this_uid = icalproperty_get_relcalid(p);
}
} else {
p = icalcomponent_get_first_property(this, ICAL_UID_PROPERTY);
if (p != NULL) {
this_uid = icalproperty_get_uid(p);
}
}
if (this_uid == NULL) {
icalerror_warn("icalbdbset_fetch found a component with no UID");
continue;
}
if (strcmp(uid, this_uid) == 0) {
return this;
}
}
}
return 0;
}
icalsetiter icalbdbset_begin_component(icalset *set, icalcomponent_kind kind,
icalgauge *gauge, const char *tzid)
{
icalsetiter itr = icalsetiter_null;
icalcomponent *comp = NULL;
icalcompiter citr;
icalbdbset *bset;
struct icaltimetype start, next;
icalproperty *dtstart, *rrule, *prop, *due;
struct icalrecurrencetype recur;
icaltimezone *u_zone;
int g = 0;
int orig_time_was_utc = 0;
icalerror_check_arg_re((set != 0), "set", icalsetiter_null);
bset = (icalbdbset *) set;
itr.gauge = gauge;
itr.tzid = tzid;
citr = icalcomponent_begin_component(bset->cluster, kind);
comp = icalcompiter_deref(&citr);
if (gauge == 0) {
itr.iter = citr;
return itr;
}
/* if there is a gauge, the first matched component is returned */
while (comp != 0) {
/* check if it is a recurring component and with guage expand, if so
* we need to add recurrence-id property to the given component */
rrule = icalcomponent_get_first_property(comp, ICAL_RRULE_PROPERTY);
g = icalgauge_get_expand(gauge);
if (rrule != 0 && g == 1) {
/* it is a recurring event */
u_zone = icaltimezone_get_builtin_timezone(itr.tzid);
/* use UTC, if that's all we have. */
if (!u_zone) {
u_zone = icaltimezone_get_utc_timezone();
}
recur = icalproperty_get_rrule(rrule);
start = icaltime_from_timet(time(0), 0);
if (icalcomponent_isa(comp) == ICAL_VEVENT_COMPONENT) {
dtstart = icalcomponent_get_first_property(comp, ICAL_DTSTART_PROPERTY);
if (dtstart) {
start = icalproperty_get_dtstart(dtstart);
}
} else if (icalcomponent_isa(comp) == ICAL_VTODO_COMPONENT) {
due = icalcomponent_get_first_property(comp, ICAL_DUE_PROPERTY);
if (due) {
start = icalproperty_get_due(due);
}
}
/* Convert to the user's timezone in order to be able to compare
* the results from the rrule iterator. */
if (icaltime_is_utc(start)) {
start = icaltime_convert_to_zone(start, u_zone);
orig_time_was_utc = 1;
}
if (itr.last_component == NULL) {
itr.ritr = icalrecur_iterator_new(recur, start);
next = icalrecur_iterator_next(itr.ritr);
itr.last_component = comp;
} else {
next = icalrecur_iterator_next(itr.ritr);
if (icaltime_is_null_time(next)) {
itr.last_component = NULL;
icalrecur_iterator_free(itr.ritr);
itr.ritr = NULL;
/* no matched occurrence */
goto getNextComp;
} else {
itr.last_component = comp;
}
}
/* if it is excluded, do next one */
if (icalproperty_recurrence_is_excluded(comp, &start, &next)) {
next = icalrecur_iterator_next(itr.ritr);
continue;
}
/* add recurrence-id value to the property if the property already exist;
* add the recurrence id property and the value if the property does not exist */
prop = icalcomponent_get_first_property(comp, ICAL_RECURRENCEID_PROPERTY);
if (prop == 0) {
icalcomponent_add_property(comp, icalproperty_new_recurrenceid(next));
} else {
icalproperty_set_recurrenceid(prop, next);
}
/* convert the next recurrence time into the user's timezone */
if (orig_time_was_utc) {
next = icaltime_convert_to_zone(next, icaltimezone_get_utc_timezone());
}
}
/* end of a recurring event */
if (gauge == 0 || icalgauge_compare(itr.gauge, comp) == 1) {
/* find a matched and return it */
itr.iter = citr;
return itr;
}
/* if it is a recurring but no matched occurrence has been found OR
* it is not a recurring and no matched component has been found,
* read the next component to find out */
getNextComp:
if ((rrule != NULL && itr.last_component == NULL) || (rrule == NULL)) {
(void)icalcompiter_next(&citr);
comp = icalcompiter_deref(&citr);
}
} /* while */
/* no matched component has found */
return icalsetiter_null;
}
gboolean
dates_import_calendar_data_from_file (ECal *cal, gchar *filename, GError **error)
{
GError *tmp_error = NULL;
GIOChannel *channel = NULL;
gchar *line;
gsize length;
gint num_comp_imported = 0;
channel = g_io_channel_new_file (filename, "r", &tmp_error);
if (tmp_error != NULL)
{
g_warning ("Error when opening file: %s", tmp_error->message);
g_propagate_error (error, tmp_error);
return FALSE;
} else {
GIOStatus status;
icalparser *parser = icalparser_new ();
/* set the channel as binary mode and let icalparser_add_line
* handle encoding */
g_io_channel_set_encoding (channel, NULL, &tmp_error);
if (tmp_error != NULL)
{
g_warning ("Error when set encoding: %s", tmp_error->message);
g_propagate_error (error, tmp_error);
g_io_channel_unref (channel);
return FALSE;
}
/* Read the from the file line by line and until EOF */
while ((status = g_io_channel_read_line (channel, &line, &length, NULL, &tmp_error))
== G_IO_STATUS_NORMAL)
{
icalcomponent *icomp = NULL;
/* The parser returns an icalcomponent when it has one */
icomp = icalparser_add_line (parser, line);
g_free (line);
if (icomp)
{
gchar *uid = NULL;
icalcompiter iter;
icalcomponent *subcomp;
/* The component is a top-level one and e_cal_create_object only
* accepts VEVENTs. Iterate through the VEVENTS. */
iter = icalcomponent_begin_component (icomp, ICAL_VEVENT_COMPONENT);
while ((subcomp = icalcompiter_deref (&iter)) != NULL)
{
if (!e_cal_create_object (cal, subcomp, &uid, &tmp_error))
{
g_warning ("Creation of imported event failed: %s", tmp_error->message);
g_propagate_error (error, tmp_error);
if (parser)
icalparser_free (parser);
if (icomp)
icalcomponent_free (icomp);
if (channel)
g_io_channel_unref (channel);
g_free (uid);
return FALSE;
}
num_comp_imported ++;
icalcompiter_next (&iter);
g_free (uid);
}
icalcomponent_free (icomp);
}
}
if (parser)
icalparser_free (parser);
if (tmp_error != NULL)
{
g_warning ("Error when reading from file: %s", tmp_error->message);
g_propagate_error (error, tmp_error);
g_io_channel_unref (channel);
return FALSE;
}
}
if (channel)
g_io_channel_unref (channel);
if (num_comp_imported > 0)
{
return TRUE;
}
else
{
*error = g_error_new_literal
(g_quark_from_string ("Dates"), 1, _("No calendar events found."));
return FALSE;
}
}
