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package org.jetbrains.dokka.resolvers
import org.jetbrains.dokka.links.DRI
import org.jetbrains.dokka.pages.*
import org.jetbrains.dokka.plugability.DokkaContext
import org.jetbrains.dokka.utilities.htmlEscape
import java.util.*
private const val PAGE_WITH_CHILDREN_SUFFIX = "index"
open class DefaultLocationProvider(
protected val pageGraphRoot: RootPageNode,
protected val dokkaContext: DokkaContext
) : LocationProvider {
protected val extension = ".html"
protected val pagesIndex: Map<DRI, ContentPage> = pageGraphRoot.asSequence().filterIsInstance<ContentPage>()
.map { it.dri.map { dri -> dri to it } }.flatten()
.groupingBy { it.first }
.aggregate { dri, _, (_, page), first ->
if (first) page else throw AssertionError("Multiple pages associated with dri: $dri")
}
protected val pathsIndex: Map<PageNode, List<String>> = IdentityHashMap<PageNode, List<String>>().apply {
fun registerPath(page: PageNode, prefix: List<String>) {
val newPrefix = prefix + page.pathName
put(page, newPrefix)
page.children.forEach { registerPath(it, newPrefix) }
}
put(pageGraphRoot, emptyList())
pageGraphRoot.children.forEach { registerPath(it, emptyList()) }
}
override fun resolve(node: PageNode, context: PageNode?, skipExtension: Boolean): String =
pathTo(node, context) + if (!skipExtension) extension else ""
override fun resolve(dri: DRI, platforms: List<PlatformData>, context: PageNode?): String =
pagesIndex[dri]?.let { resolve(it, context) } ?:
// Not found in PageGraph, that means it's an external link
ExternalLocationProvider.getLocation(dri,
this.dokkaContext.configuration.passesConfigurations
.filter { passConfig ->
platforms.toSet()
.contains(PlatformData(passConfig.moduleName, passConfig.analysisPlatform, passConfig.targets))
} // TODO: change targets to something better?
.flatMap { it.externalDocumentationLinks }.distinct()
)
override fun resolveRoot(node: PageNode): String =
pathTo(pageGraphRoot, node).removeSuffix(PAGE_WITH_CHILDREN_SUFFIX)
override fun ancestors(node: PageNode): List<PageNode> =
generateSequence(node) { it.parent() }.toList()
protected open fun pathTo(node: PageNode, context: PageNode?): String {
fun pathFor(page: PageNode) = pathsIndex[page] ?: throw AssertionError(
"${page::class.simpleName}(${page.name}) does not belong to current page graph so it is impossible to compute its path"
)
val contextNode =
if (context?.children?.isEmpty() == true && context.parent() != null) context.parent() else context
val nodePath = pathFor(node)
val contextPath = contextNode?.let { pathFor(it) }.orEmpty()
val commonPathElements = nodePath.asSequence().zip(contextPath.asSequence())
.takeWhile { (a, b) -> a == b }.count()
return (List(contextPath.size - commonPathElements) { ".." } + nodePath.drop(commonPathElements) +
if (node.children.isNotEmpty()) listOf(PAGE_WITH_CHILDREN_SUFFIX) else emptyList()).joinToString("/")
}
private fun PageNode.parent() = pageGraphRoot.parentMap[this]
}
fun DRI.toJavadocLocation(jdkVersion: Int): String { // TODO: classes without packages?
val packageLink = packageName?.replace(".", "/")
if (classNames == null) {
return "$packageLink/package-summary.html".htmlEscape()
}
val classLink = if (packageLink == null) "$classNames.html" else "$packageLink/$classNames.html"
if (callable == null) {
return classLink.htmlEscape()
}
val callableLink = "$classLink#${callable.name}" + when {
jdkVersion < 8 -> "(${callable.params.joinToString(", ")})"
jdkVersion < 10 -> "-${callable.params.joinToString("-")}-"
else -> "(${callable.params.joinToString(",")})"
}
return callableLink.htmlEscape()
}
fun DRI.toDokkaLocation(extension: String): String { // TODO: classes without packages?
if (classNames == null) {
return "$packageName/index$extension"
}
val classLink = if (packageName == null) {
""
} else {
"$packageName/"
} + classNames.split('.').joinToString("/", transform = ::identifierToFilename)
if (callable == null) {
return "$classLink/index$extension"
}
return "$classLink/${identifierToFilename(callable.name)}$extension"
}
private val reservedFilenames = setOf("index", "con", "aux", "lst", "prn", "nul", "eof", "inp", "out")
private fun identifierToFilename(name: String): String {
if (name.isEmpty()) return "--root--"
val escaped = name.replace('<', '-').replace('>', '-')
val lowercase = escaped.replace("[A-Z]".toRegex()) { matchResult -> "-" + matchResult.value.toLowerCase() }
return if (lowercase in reservedFilenames) "--$lowercase--" else lowercase
}
private val PageNode.pathName: String
get() = if (this is PackagePageNode) name else identifierToFilename(name)
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