Skip to content

reject dates that do not exist #11

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
nepinhum merged 1 commit into from
Sep 3, 2026
Merged

reject dates that do not exist #11

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
23 changes: 22 additions & 1 deletion app/flags.v
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ mut:
role string = 'author'
name string
email string
limit int = 50
limit int = 50
by string = 'month'
jobs int
dry_run bool
Expand Down Expand Up @@ -111,9 +111,30 @@ fn parse(args []string) !Flags {
return f
}

// check_date wants a day that exists.
fn check_date(s string) !string {
if s.len != 10 || s[4] != `-` || s[7] != `-` {
return error("'${s}' is not a date; use YYYY-MM-DD")
}
for i, c in s {
if i != 4 && i != 7 && !c.is_digit() {
return error("'${s}' is not a date; use YYYY-MM-DD")
}
}
month := s[5..7].int()
day := s[8..10].int()
if month < 1 || month > 12 || day < 1 || day > days_in(s[..4].int(), month) {
return error("there is no such day as '${s}'")
}
return s
}

fn days_in(year int, month int) int {
return match month {
2 {
if year % 4 == 0 && (year % 100 != 0 || year % 400 == 0) { 29 } else { 28 }
}
4, 6, 9, 11 { 30 }
else { 31 }
}
}