zzstoatzz.io
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1const std = @import("std");
2const cron = @import("cron");
3
4pub fn main() !void {
5 const now = std.time.timestamp() * 1_000_000;
6
7 // Parse a cron expression
8 const schedule = try cron.Cron.parse("*/15 * * * *");
9 std.debug.print("expression: */15 * * * * (every 15 minutes)\n\n", .{});
10
11 // Get next 5 occurrences using nextN
12 std.debug.print("next 5 occurrences (via nextN):\n", .{});
13 var buf: [5]i64 = undefined;
14 const count = schedule.nextN(now, 5, &buf);
15 for (buf[0..count]) |ts| {
16 printDateTime(ts);
17 }
18
19 // Using the iterator pattern
20 std.debug.print("\nusing iterator:\n", .{});
21 const weekdays = try cron.Cron.parse("0 9 * * 1-5"); // 9am weekdays
22 var iter = weekdays.iter(now);
23
24 var i: usize = 0;
25 while (iter.next()) |ts| {
26 printDateTime(ts);
27 i += 1;
28 if (i >= 3) break;
29 }
30
31 // Check if a time matches
32 std.debug.print("\nmatches check:\n", .{});
33 const midnight = try cron.Cron.parse("0 0 * * *");
34 std.debug.print(" does midnight cron match now? {}\n", .{midnight.matches(now)});
35}
36
37fn printDateTime(micros: i64) void {
38 const dt = cron.DateTime.fromTimestamp(@divFloor(micros, 1_000_000));
39 std.debug.print(" {d}-{d:0>2}-{d:0>2} {d:0>2}:{d:0>2}:{d:0>2}\n", .{
40 dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second,
41 });
42}