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https://github.com/Scogun/kcron-common
Cron realization for Kotlin Multiplatform
https://github.com/Scogun/kcron-common
cron kotlin kotlin-multiplatform
Last synced: 6 days ago
JSON representation
Cron realization for Kotlin Multiplatform
- Host: GitHub
- URL: https://github.com/Scogun/kcron-common
- Owner: Scogun
- License: apache-2.0
- Created: 2020-11-01T14:55:45.000Z (about 4 years ago)
- Default Branch: main
- Last Pushed: 2024-06-13T11:57:53.000Z (5 months ago)
- Last Synced: 2024-08-02T09:26:49.270Z (3 months ago)
- Topics: cron, kotlin, kotlin-multiplatform
- Language: Kotlin
- Homepage:
- Size: 415 KB
- Stars: 24
- Watchers: 3
- Forks: 3
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-kotlin-multiplatform - kcron - Kotlin multiplatform Cron library (Libraries / Utility)
- kmp-awesome - KCron - Kotlin multiplatform Cron library (Libraries / ⏰ Date-Time)
README
# KCron
Cron realization for Kotlin Multiplatform
[](https://sonarcloud.io/summary/new_code?id=Scogun_kcron-common)   [](https://search.maven.org/artifact/com.ucasoft.kcron/kcron-common/0.14.4/jar)
### Features
* Kotlin Multiplatform library
* Parse Cron expressions
* Include L, W, LW, '?' and #
* Build Cron expression by smart builder functions:
```kotlin
builder
.seconds(10 at 0) //Every 10 seconds starting at 0 seconds
.minutes(5..25) // Every minute between 5 and 25
.hours(5, 12) // Specific hours: 5 and 12
.daysOfWeek(7 on 5) // On the 5th Sunday of the month
.years(2050) // Specific year: 2050
```
* Build Cron expression via Kotlin style function:
```kotlin
cron {
seconds(10 at 0)//Every 10 seconds starting at 0 seconds
minutes(5..25) // Every minute between 5 and 25
hours(5, 12) // Specific hours: 5 and 12
daysOfWeek(7 on 5) // On the 5th Sunday of the month
years(2050) // Specific year: 2050
}
```
* Support custom first week day
```kotlin
val builder = Builder(WeekDays.Sunday)
builder
.daysOfWeek(7 on 5) // On the 5th Saturday of the month
```
* Parsing validation includes combination rules
* 'days' and 'days of week' could not be setup simultaneously
* Support
* JVM
* Linux
* Windows (mingwX64)
* macOS
* Javascript
* iOS
* Support different DateTime libraries (via DateTime Provider Abstractions)
### Usage
#### KCron-Common library as default implementation uses [Kotlinx-DateTime](https://github.com/Kotlin/kotlinx-datetime) library
***Add with Gradle***
```groovy
kotlin {
sourceSets {
commonMain {
dependencies {
implementation 'com.ucasoft.kcron:kcron-common:0.14.4'
}
}
}
}
```
***Build Cron expression***
```kotlin
val builder = Cron.builder()
// By default, builder contains any expression for every part
println(builder.expression) // * * * ? * * *
builder
.seconds(10 at 0)
.minutes(5..25)
.hours(5, 12)
.daysOfWeek(7 on 5)
.years(2050)
println(builder.expression) // 0/10 5-25 5,12 ? * 7#5 2050
```
***Parse as Classic as well as Modern Cron expressions***
```kotlin
// Auto detect
val builder = Cron.parseAndBuild("0/10 5-25 5,12 ? * 7#5 2050") {
it.firstDayOfWeek = WeekDays.Sunday
}
@OptIn(DelicateIterableApi::class)
println(builder.asIterable().take(10))
/* Result:
[
2050-01-29T05:05,
2050-01-29T05:05:10,
2050-01-29T05:05:20,
2050-01-29T05:05:30,
2050-01-29T05:05:40,
2050-01-29T05:05:50,
2050-01-29T05:06,
2050-01-29T05:06:10,
2050-01-29T05:06:20,
2050-01-29T05:06:30
]
*/
// OR Force to parse only Classic expressions
try {
val builder = Cron.parseAndBuild("0/10 5-25 5,12 ? * 7#5 2050") {
it.version = Version.Classic
}
} catch(e: WrongCronExpression) {
println(e.message) // Expression 0/10 5-25 5,12 ? * 7#5 2050 is not Classic Cron one!
}
```
***Days of week and months can be defined in a parsed expression as numbers as well as short names***
```kotlin
builder = Cron.parseAndBuild("15/10 5-25 5 ? JAN,MAR 2,3,4,5 2050")
println(builder.nextRun) // 2050-01-04T05:05:15
// OR
builder = Cron.parseAndBuild("15/10 5-25 5 ? 2-4 MON 2050")
println(builder.nextRun) // 2050-02-07T05:05:15
```
***Easy change any part of expression***
```kotlin
val builder = Cron.parseAndBuild("0/10 5-25 5,12 ? * SUN#5 2050")
builder.years(2021..2025)
println(builder.expression) // 0/10 5-25 5,12 ? * SUN#5 2021-2025
```
### Current status
This library is on beta version `0.14.4`.
It is continuing to develop.
Check the news!