Can't figure out cron algo right now [CI SKIP]

cron
Jef Roosens 2022-04-10 17:47:46 +02:00
parent 799fe2e454
commit e3da3d0d7f
Signed by untrusted user: Jef Roosens
GPG Key ID: B75D4F293C7052DB
2 changed files with 38 additions and 1 deletions

View File

@ -1,6 +1,7 @@
module cron
import math
import time
struct CronExpression {
minutes []u32
@ -8,7 +9,32 @@ struct CronExpression {
days []u32
}
// parse_range parses a given string into a range of integers, if possible.
// next calculates the earliest time this cron expression is valid.
pub fn (ce &CronExpression) next(ref &time.Time) time.Time {
res := time.Time{}
mut day := 0
mut hour := 0
mut minute := 0
// Find the next minute
// If ref.minute is greater than
if ref.minute >= ce.minutes[ce.minutes.len - 1] || ref.minute < ce.minutes[0] {
minute = ce.minutes[0]
}else{
for i in 0..ce.minutes.len {
if ce.minutes[i] > ref.minute {
minute = ce.minutes[i]
break
}
}
}
return res
}
// parse_range parses a given string into a range of sorted integers, if
// possible.
fn parse_range(s string, min u32, max u32) ?[]u32 {
mut out := []u32{}
mut start := min
@ -29,6 +55,10 @@ fn parse_range(s string, min u32, max u32) ?[]u32 {
}
}
if interval == 0 {
return []
}
for start <= max {
out << start
start += interval

View File

@ -1,5 +1,6 @@
module cron
// =====parse_range=====
fn test_parse_star_range() ? {
assert parse_range('*', 0, 5) ? == [u32(0), 1, 2, 3, 4, 5]
}
@ -24,6 +25,10 @@ fn test_parse_step_star_too_large() ? {
assert parse_range('*/21', 0, 20) ? == [u32(0)]
}
fn test_parse_step_zero() ? {
assert parse_range('*/0', 0, 20) ? == []
}
fn test_parse_step_number() ? {
assert parse_range('5/4', 0, 20) ? == [u32(5), 9, 13, 17]
}
@ -35,3 +40,5 @@ fn test_parse_step_number_too_large() ? {
fn test_parse_step_number_too_small() ? {
assert parse_range('2/4', 5, 10) ? == [u32(5), 9]
}