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calendarspec: use ".." notation for ranges of weekdays

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For backwards compatibility, both the new format (Mon..Wed) and
the old format (Mon-Wed) are supported.
This commit is contained in:
Douglas Christman 2016-06-30 22:26:07 -04:00
parent 32b5236916
commit e638d0504f
3 changed files with 28 additions and 13 deletions
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10
man/systemd.time.xml
View file

@ -217,8 +217,8 @@
should consist of one or more English language weekday names,
either in the abbreviated (Wed) or non-abbreviated (Wednesday)
form (case does not matter), separated by commas. Specifying two
weekdays separated by <literal>-</literal> refers to a range of
continuous weekdays. <literal>,</literal> and <literal>-</literal>
weekdays separated by <literal>..</literal> refers to a range of
continuous weekdays. <literal>,</literal> and <literal>..</literal>
may be combined freely.</para>
<para>In the date and time specifications, any component may be
@ -263,12 +263,12 @@
<para>Examples for valid timestamps and their
normalized form:</para>
<programlisting> Sat,Thu,Mon-Wed,Sat-Sun → Mon-Thu,Sat,Sun *-*-* 00:00:00
<programlisting> Sat,Thu,Mon..Wed,Sat..Sun → Mon..Thu,Sat,Sun *-*-* 00:00:00
Mon,Sun 12-*-* 2,1:23 → Mon,Sun 2012-*-* 01,02:23:00
Wed *-1 → Wed *-*-01 00:00:00
Wed-Wed,Wed *-1 → Wed *-*-01 00:00:00
Wed..Wed,Wed *-1 → Wed *-*-01 00:00:00
Wed, 17:48 → Wed *-*-* 17:48:00
Wed-Sat,Tue 12-10-15 1:2:3 → Tue-Sat 2012-10-15 01:02:03
Wed..Sat,Tue 12-10-15 1:2:3 → Tue..Sat 2012-10-15 01:02:03
*-*-7 0:0:0 → *-*-07 00:00:00
10-15 → *-10-15 00:00:00
monday *-12-* 17:00 → Mon *-12-* 17:00:00

24
src/basic/calendarspec.c
View file

@ -202,7 +202,7 @@ static void format_weekdays(FILE *f, const CalendarSpec *c) {
};
int l, x;
bool need_colon = false;
bool need_comma = false;
assert(f);
assert(c);
@ -213,10 +213,10 @@ static void format_weekdays(FILE *f, const CalendarSpec *c) {
if (c->weekdays_bits & (1 << x)) {
if (l < 0) {
if (need_colon)
if (need_comma)
fputc(',', f);
else
need_colon = true;
need_comma = true;
fputs(days[x], f);
l = x;
@ -225,7 +225,7 @@ static void format_weekdays(FILE *f, const CalendarSpec *c) {
} else if (l >= 0) {
if (x > l + 1) {
fputc(x > l + 2 ? '-' : ',', f);
fputs(x > l + 2 ? ".." : ",", f);
fputs(days[x-1], f);
}
@ -234,7 +234,7 @@ static void format_weekdays(FILE *f, const CalendarSpec *c) {
}
if (l >= 0 && x > l + 1) {
fputc(x > l + 2 ? '-' : ',', f);
fputs(x > l + 2 ? ".." : ",", f);
fputs(days[x-1], f);
}
}
@ -359,6 +359,7 @@ static int parse_weekdays(const char **p, CalendarSpec *c) {
skip = strlen(day_nr[i].name);
if ((*p)[skip] != '-' &&
(*p)[skip] != '.' &&
(*p)[skip] != ',' &&
(*p)[skip] != ' ' &&
(*p)[skip] != 0)
@ -396,7 +397,18 @@ static int parse_weekdays(const char **p, CalendarSpec *c) {
return 0;
}
if (**p == '-') {
if (**p == '.') {
if (l >= 0)
return -EINVAL;
if ((*p)[1] != '.')
return -EINVAL;
l = day_nr[i].nr;
*p += 1;
/* Support ranges with "-" for backwards compatibility */
} else if (**p == '-') {
if (l >= 0)
return -EINVAL;

7
src/test/test-calendarspec.c
View file

@ -91,12 +91,15 @@ static void test_next(const char *input, const char *new_tz, usec_t after, usec_
int main(int argc, char* argv[]) {
CalendarSpec *c;
test_one("Sat,Thu,Mon-Wed,Sat-Sun", "Mon-Thu,Sat,Sun *-*-* 00:00:00");
test_one("Sat,Thu,Mon-Wed,Sat-Sun", "Mon..Thu,Sat,Sun *-*-* 00:00:00");
test_one("Sat,Thu,Mon..Wed,Sat..Sun", "Mon..Thu,Sat,Sun *-*-* 00:00:00");
test_one("Mon,Sun 12-*-* 2,1:23", "Mon,Sun 2012-*-* 01,02:23:00");
test_one("Wed *-1", "Wed *-*-01 00:00:00");
test_one("Wed-Wed,Wed *-1", "Wed *-*-01 00:00:00");
test_one("Wed..Wed,Wed *-1", "Wed *-*-01 00:00:00");
test_one("Wed, 17:48", "Wed *-*-* 17:48:00");
test_one("Wed-Sat,Tue 12-10-15 1:2:3", "Tue-Sat 2012-10-15 01:02:03");
test_one("Wed-Sat,Tue 12-10-15 1:2:3", "Tue..Sat 2012-10-15 01:02:03");
test_one("Wed..Sat,Tue 12-10-15 1:2:3", "Tue..Sat 2012-10-15 01:02:03");
test_one("*-*-7 0:0:0", "*-*-07 00:00:00");
test_one("10-15", "*-10-15 00:00:00");
test_one("monday *-12-* 17:00", "Mon *-12-* 17:00:00");