plugins/base/src/main/kotlin/resolvers/external/Dokka010ExternalLocationProvider.kt


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package org.jetbrains.dokka.base.resolvers.external

import org.jetbrains.dokka.base.resolvers.local.DokkaLocationProvider.Companion.identifierToFilename
import org.jetbrains.dokka.base.resolvers.shared.ExternalDocumentation
import org.jetbrains.dokka.links.Callable
import org.jetbrains.dokka.links.DRI
import org.jetbrains.dokka.plugability.DokkaContext

open class Dokka010ExternalLocationProvider(
    val externalDocumentation: ExternalDocumentation,
    val extension: String,
    val dokkaContext: DokkaContext
) : ExternalLocationProvider {
    override fun resolve(dri: DRI): String? {
        val docURL = externalDocumentation.documentationURL.toString().removeSuffix("/") + "/"

        val relocationId =
            "${dri.packageName}.${dri.classNames}".let { if (dri.callable != null) it + "$" + dri.callable!!.toOldString() else it }
        externalDocumentation.packageList.locations[relocationId]?.let { path -> return "$docURL$path" }

        val classNamesChecked = dri.classNames ?: return "$docURL${dri.packageName ?: ""}/index$extension"
        val classLink = (listOfNotNull(dri.packageName) + classNamesChecked.split('.'))
            .joinToString("/", transform = ::identifierToFilename)

        val callableChecked = dri.callable ?: return "$docURL$classLink/index$extension"
        return "$docURL$classLink/" + identifierToFilename(callableChecked.name) + extension
    }

    private fun Callable.toOldString() = name + params.joinToString(", ", "(", ")") + receiver?.let { "#$it" }
}