coverage.gradle.kts

import javax.xml.parsers.DocumentBuilderFactory

tasks.register("printLineCoverage") {
    group = "verification" // Put into the same group as the `kover` tasks
    doLast {
        val report = file("$buildDir/reports/kover/report.xml")

        val doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(report)
        val rootNode = doc.firstChild
        var childNode = rootNode.firstChild

        var coveragePercent = 0.0

        while (childNode != null) {
            if (childNode.nodeName == "counter") {
                val typeAttr = childNode.attributes.getNamedItem("type")
                if (typeAttr.textContent == "LINE") {
                    val missedAttr = childNode.attributes.getNamedItem("missed")
                    val coveredAttr = childNode.attributes.getNamedItem("covered")

                    val missed = missedAttr.textContent.toLong()
                    val covered = coveredAttr.textContent.toLong()

                    coveragePercent = (covered * 100.0) / (missed + covered)

                    break
                }
            }
            childNode = childNode.nextSibling
        }

        println("%.1f".format(coveragePercent))
    }
}