Popularity
4.2
Growing
Activity
7.2
Declining
64
2
8

Programming language: Kotlin
Tags: Misc    
Latest version: v0.17.0

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README

kaml

Build Status Coverage License Maven Central

What is this?

This library adds YAML support to kotlinx.serialization.

YAML version 1.2 is supported.

Usage samples

Parsing from YAML to a Kotlin object

@Serializable
data class Team(
    val leader: String,
    val members: List<String>
)

val input = """
        leader: Amy
        members:
          - Bob
          - Cindy
          - Dan
    """.trimIndent()

val result = Yaml.default.parse(Team.serializer(), input)

println(result)

Serializing from a Kotlin object to YAML

@Serializable
data class Team(
    val leader: String,
    val members: List<String>
)

val input = Team("Amy", listOf("Bob", "Cindy", "Dan"))

val result = Yaml.default.stringify(Team.serializer(), input)

println(result)

Supported YAML features

Specify the extension prefix by setting extensionDefinitionPrefix when creating an instance of Yaml.

Extensions can only be defined at the top level of a document, and only if the top level element is a map or object. Any key starting with the extension prefix must have an anchor defined and will not be included in the deserialised value.

Referencing kaml

Add the following to your Gradle build script:

implementation("com.charleskorn.kaml:kaml:<version number here>")

Check the releases page for the latest release information, and the Maven Central page for examples of how to reference the library in other build systems.

Contributing to kaml

Pull requests and bug reports are always welcome!

kaml uses batect to simplify development environment setup:

  • To build the library: ./batect build
  • To run the tests and static analysis tools: ./batect check
  • To run the tests and static analysis tools continuously: ./batect continuousCheck

Other commands are available by running ./batect --list-tasks


*Note that all licence references and agreements mentioned in the kaml README section above are relevant to that project's source code only.