com.hexagonkt.serialization.jackson.csv.Csv.kt Maven / Gradle / Ivy

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package com.hexagonkt.serialization.jackson.csv

import com.fasterxml.jackson.dataformat.csv.CsvGenerator
import com.fasterxml.jackson.dataformat.csv.CsvMapper
import com.fasterxml.jackson.dataformat.csv.CsvParser
import com.hexagonkt.core.media.MediaType
import com.hexagonkt.core.media.TEXT_CSV
import com.hexagonkt.serialization.SerializationFormat
import java.io.InputStream
import java.io.OutputStream

object Csv : SerializationFormat {

    override val mediaType: MediaType = TEXT_CSV
    override val textFormat: Boolean = true

    private val mapper: CsvMapper =
        CsvMapper()
            .configure(CsvGenerator.Feature.ALWAYS_QUOTE_EMPTY_STRINGS, false)
            .configure(CsvParser.Feature.ALLOW_TRAILING_COMMA, false)
            .configure(CsvParser.Feature.SKIP_EMPTY_LINES, true)
            .configure(CsvParser.Feature.WRAP_AS_ARRAY, true)

    private val reader = mapper.readerForListOf(Any::class.java)

    override fun serialize(instance: Any, output: OutputStream) {
        mapper.writeValue(output, instance)
    }

    override fun parse(input: InputStream): Any =
        reader.readValue(input)
}