From 95151e3f0c2a9935abe6e498fd056a57075ea0c5 Mon Sep 17 00:00:00 2001
From: Lars Henriksen <LarsHenriksen@get2net.dk>
Date: Wed, 7 Oct 2020 19:51:18 +0200
Subject: Add p(revious) command
The p(rev) command finds the previous occurrence of a recurrent item, analogous
to the n(ext) command.
A bug in the next command is corrected..
Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk>
Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
---
src/calcurse.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++++---
src/calcurse.h | 1 +
src/recur.c | 24 ++++++++++++++++++++++++
3 files changed, 74 insertions(+), 3 deletions(-)
(limited to 'src')
diff --git a/src/calcurse.c b/src/calcurse.c
index 8a65fba..3083f86 100644
--- a/src/calcurse.c
+++ b/src/calcurse.c
@@ -557,7 +557,8 @@ static inline void key_generic_cmd(void)
int valid = 0, force = 0, ret;
char *error_msg;
- status_mesg(_("Command: [ h(elp) | w(rite)(!) | q(uit)(!) | wq(!) | n(ext) ]"), "");
+ status_mesg(_("Command: "
+ "[ h(elp) | w(rite)(!) | q(uit)(!) | wq(!) | n(ext) | p(rev) ]"), "");
if (getstring(win[STA].p, cmd, BUFSIZ, 0, 1) != GETSTRING_VALID)
goto cleanup;
cmd_name = strtok(cmd, " ");
@@ -638,17 +639,62 @@ static inline void key_generic_cmd(void)
goto cleanup;
}
if (!more) {
- error_msg = _("Last repetition.");
+ error_msg = _("Last occurrence.");
warnbox(error_msg);
goto cleanup;
}
- item->start = next;
+ item->order = next;
ui_calendar_set_slctd_day(sec2date(next));
day_set_sel_data(item);
do_storage(1);
valid = 1;
}
+ if (!strcmp(cmd_name, "prev") || !strcmp(cmd_name, "p")) {
+ struct day_item *item;
+ time_t day, prev;
+ struct recur_apoint *rapt;
+ struct recur_event *rev;
+ int more = 0;
+
+ if (wins_slctd() != APP) {
+ error_msg = _("Select a repeating item in the"
+ " appointments panel.");
+ warnbox(error_msg);
+ goto cleanup;
+ }
+ item = ui_day_get_sel();
+ /*
+ * The selected day need not be the (item) start day
+ * for multi-day occurrences.
+ */
+ day = update_time_in_date(item->start, 0, 0);
+ if (item->type == RECUR_EVNT) {
+ rev = item->item.rev;
+ more = recur_prev_occurrence(rev->day, -1, rev->rpt,
+ &rev->exc, day, &prev);
+ } else if (item->type == RECUR_APPT) {
+ rapt = item->item.rapt;
+ more = recur_prev_occurrence(rapt->start, rapt->dur,
+ rapt->rpt, &rapt->exc,
+ day, &prev);
+ } else {
+ error_msg = _("Not a repeating item.");
+ warnbox(error_msg);
+ goto cleanup;
+ }
+ if (!more) {
+ error_msg = _("First occurrence.");
+ warnbox(error_msg);
+ goto cleanup;
+ }
+ item->order = prev;
+ ui_calendar_set_slctd_day(sec2date(prev));
+ day_set_sel_data(item);
+ do_storage(1);
+
+ valid = 1;
+ }
if (!valid) {
asprintf(&error_msg, _("No such command: %s"), cmd);
diff --git a/src/calcurse.h b/src/calcurse.h
index 39a2af1..dca9d8b 100644
--- a/src/calcurse.h
+++ b/src/calcurse.h
@@ -1105,6 +1105,7 @@ void recur_event_paste_item(struct recur_event *, time_t);
void recur_apoint_paste_item(struct recur_apoint *, time_t);
int recur_next_occurrence(time_t, long, struct rpt *, llist_t *, time_t, time_t *);
int recur_nth_occurrence(time_t, long, struct rpt *, llist_t *, int, time_t *);
+int recur_prev_occurrence(time_t, long, struct rpt *, llist_t *, time_t, time_t *);
/* sigs.c */
diff --git a/src/recur.c b/src/recur.c
index 3c93de2..3a16d1e 100644
--- a/src/recur.c
+++ b/src/recur.c
@@ -1846,3 +1846,27 @@ int recur_nth_occurrence(time_t s, long d, struct rpt *r, llist_t *e, int n,
}
return !n;
}
+
+/*
+ * Finds the previous occurrence - the most recent before day - and returns it
+ * in the provided buffer.
+ */
+int recur_prev_occurrence(time_t s, long d, struct rpt *r, llist_t *e,
+ time_t day, time_t *prev)
+{
+ time_t prev_day, next;
+
+ if (day <= update_time_in_date(s, 0, 0))
+ return 0;
+ next = *prev = s;
+ while (update_time_in_date(next, 0, 0) < day) {
+ /* Set new previous and next. */
+ *prev = next;
+ prev_day = update_time_in_date(*prev, 0, 0);
+ recur_next_occurrence(s, d, r, e, prev_day, &next);
+ /* Multi-day appointment */
+ if (next == *prev)
+ next = NEXTDAY(*prev);
+ }
+ return 1;
+}
--
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