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-rw-r--r--src/basic/calendarspec.c109
1 files changed, 70 insertions, 39 deletions
diff --git a/src/basic/calendarspec.c b/src/basic/calendarspec.c
index 359bb16cae..8b57de4744 100644
--- a/src/basic/calendarspec.c
+++ b/src/basic/calendarspec.c
@@ -18,6 +18,7 @@
***/
#include <alloca.h>
+#include <ctype.h>
#include <errno.h>
#include <stddef.h>
#include <stdio.h>
@@ -152,7 +153,7 @@ int calendar_spec_normalize(CalendarSpec *c) {
return 0;
}
-_pure_ static bool chain_valid(CalendarComponent *c, int from, int to, bool eom) {
+_pure_ static bool chain_valid(CalendarComponent *c, int from, int to, bool end_of_month) {
if (!c)
return true;
@@ -162,17 +163,17 @@ _pure_ static bool chain_valid(CalendarComponent *c, int from, int to, bool eom)
/*
* c->repeat must be short enough so at least one repetition may
* occur before the end of the interval. For dates scheduled
- * relative to the end of the month (eom), c->value corresponds
- * to the Nth last day of the month.
+ * relative to the end of the month, c->value corresponds to the
+ * Nth last day of the month.
*/
- if (eom && c->value - c->repeat < from)
+ if (end_of_month && c->value - c->repeat < from)
return false;
- if (!eom && c->value + c->repeat > to)
+ if (!end_of_month && c->value + c->repeat > to)
return false;
if (c->next)
- return chain_valid(c->next, from, to, eom);
+ return chain_valid(c->next, from, to, end_of_month);
return true;
}
@@ -254,6 +255,9 @@ static void format_weekdays(FILE *f, const CalendarSpec *c) {
}
static void format_chain(FILE *f, int space, const CalendarComponent *c, bool usec) {
+ const CalendarComponent *n, *p;
+ int d = usec ? (int) USEC_PER_SEC : 1;
+
assert(f);
if (!c) {
@@ -262,29 +266,40 @@ static void format_chain(FILE *f, int space, const CalendarComponent *c, bool us
}
assert(c->value >= 0);
- if (!usec)
- fprintf(f, "%0*i", space, c->value);
- else if (c->value % USEC_PER_SEC == 0)
- fprintf(f, "%0*i", space, (int) (c->value / USEC_PER_SEC));
- else
- fprintf(f, "%0*i.%06i", space, (int) (c->value / USEC_PER_SEC), (int) (c->value % USEC_PER_SEC));
-
- if (c->repeat > 0) {
- if (!usec)
- fprintf(f, "/%i", c->repeat);
- else if (c->repeat % USEC_PER_SEC == 0)
- fprintf(f, "/%i", (int) (c->repeat / USEC_PER_SEC));
- else
- fprintf(f, "/%i.%06i", (int) (c->repeat / USEC_PER_SEC), (int) (c->repeat % USEC_PER_SEC));
+
+ fprintf(f, "%0*i", space, c->value / d);
+ if (c->value % d != 0)
+ fprintf(f, ".%06i", c->value % d);
+
+ if (c->repeat != 0)
+ fprintf(f, "/%i", c->repeat / d);
+ if (c->repeat % d != 0)
+ fprintf(f, ".%06i", c->repeat % d);
+
+ p = c;
+ for (;;) {
+ n = p->next;
+
+ if (!n || n->repeat || p->repeat)
+ break;
+
+ if (n->value - p->value != d)
+ break;
+
+ p = n;
}
- if (c->next) {
+ if (p->value - c->value >= 2 * d) {
+ fputs("..", f);
+ format_chain(f, space, p, usec);
+ } else if (c->next) {
fputc(',', f);
format_chain(f, space, c->next, usec);
}
}
int calendar_spec_to_string(const CalendarSpec *c, char **p) {
+ CalendarComponent *cc;
char *buf = NULL;
size_t sz = 0;
FILE *f;
@@ -312,7 +327,12 @@ int calendar_spec_to_string(const CalendarSpec *c, char **p) {
fputc(':', f);
format_chain(f, 2, c->minute, false);
fputc(':', f);
- format_chain(f, 2, c->microsecond, true);
+
+ cc = c->microsecond;
+ if (cc && !cc->value && cc->repeat == USEC_PER_SEC && !cc->next)
+ fputc('*', f);
+ else
+ format_chain(f, 2, c->microsecond, true);
if (c->utc)
fputs(" UTC", f);
@@ -372,9 +392,6 @@ static int parse_weekdays(const char **p, CalendarSpec *c) {
for (;;) {
unsigned i;
- if (!first && **p == ' ')
- return 0;
-
for (i = 0; i < ELEMENTSOF(day_nr); i++) {
size_t skip;
@@ -430,7 +447,7 @@ static int parse_weekdays(const char **p, CalendarSpec *c) {
return -EINVAL;
l = day_nr[i].nr;
- *p += 1;
+ *p += 2;
/* Support ranges with "-" for backwards compatibility */
} else if (**p == '-') {
@@ -438,10 +455,19 @@ static int parse_weekdays(const char **p, CalendarSpec *c) {
return -EINVAL;
l = day_nr[i].nr;
- } else
+ *p += 1;
+
+ } else if (**p == ',') {
l = -1;
+ *p += 1;
+ }
+
+ /* Allow a trailing comma but not an open range */
+ if (**p == 0 || **p == ' ') {
+ *p += strspn(*p, " ");
+ return l < 0 ? 0 : -EINVAL;
+ }
- *p += 1;
first = false;
}
}
@@ -452,6 +478,9 @@ static int parse_component_decimal(const char **p, bool usec, unsigned long *res
char *ee = NULL;
int r;
+ if (!isdigit(**p))
+ return -EINVAL;
+
errno = 0;
value = strtoul(*p, &ee, 10);
if (errno > 0)
@@ -470,6 +499,10 @@ static int parse_component_decimal(const char **p, bool usec, unsigned long *res
if (*e == '.') {
unsigned add;
+ /* This is the start of a range, not a fractional part */
+ if (e[1] == '.')
+ goto finish;
+
e++;
r = parse_fractional_part_u(&e, 6, &add);
if (r < 0)
@@ -481,6 +514,7 @@ static int parse_component_decimal(const char **p, bool usec, unsigned long *res
}
}
+finish:
*p = e;
*res = value;
@@ -699,14 +733,9 @@ static int parse_calendar_time(const char **p, CalendarSpec *c) {
t = *p;
- if (*t == 0) {
- /* If no time is specified at all, but a date of some
- * kind, then this means 00:00:00 */
- if (c->day || c->weekdays_bits > 0)
- goto null_hour;
-
- goto finish;
- }
+ /* If no time is specified at all, then this means 00:00:00 */
+ if (*t == 0)
+ goto null_hour;
r = parse_chain(&t, false, &h);
if (r < 0)
@@ -784,9 +813,6 @@ int calendar_spec_from_string(const char *p, CalendarSpec **spec) {
assert(p);
assert(spec);
- if (isempty(p))
- return -EINVAL;
-
c = new0(CalendarSpec, 1);
if (!c)
return -ENOMEM;
@@ -825,6 +851,11 @@ int calendar_spec_from_string(const char *p, CalendarSpec **spec) {
}
}
+ if (isempty(p)) {
+ r = -EINVAL;
+ goto fail;
+ }
+
if (strcaseeq(p, "minutely")) {
r = const_chain(0, &c->microsecond);
if (r < 0)
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2025-03-17 23:37:39 +0000