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package org.jetbrains.dokka
import com.intellij.psi.PsiElement
import java.io.File
import com.intellij.psi.PsiDocumentManager
import com.intellij.psi.PsiNameIdentifierOwner
import org.jetbrains.kotlin.psi.psiUtil.startOffset
class SourceLinkDefinition(val path: String, val url: String, val lineSuffix: String?)
fun DocumentationNode.appendSourceLink(psi: PsiElement?, sourceLinks: List<SourceLinkDefinition>) {
val path = psi?.containingFile?.virtualFile?.path ?: return
val target = if (psi is PsiNameIdentifierOwner) psi.nameIdentifier else psi
val absPath = File(path).absolutePath
val linkDef = sourceLinks.firstOrNull { absPath.startsWith(it.path) }
if (linkDef != null) {
var url = linkDef.url + path.substring(linkDef.path.length())
if (linkDef.lineSuffix != null) {
val line = target?.lineNumber()
if (line != null) {
url += linkDef.lineSuffix + line.toString()
}
}
append(DocumentationNode(url, Content.Empty, DocumentationNode.Kind.SourceUrl),
DocumentationReference.Kind.Detail);
}
if (target != null) {
append(DocumentationNode(target.sourcePosition(), Content.Empty, DocumentationNode.Kind.SourcePosition), DocumentationReference.Kind.Detail)
}
}
private fun PsiElement.sourcePosition(): String {
val path = containingFile.virtualFile.path
val lineNumber = lineNumber()
val columnNumber = columnNumber()
return when {
lineNumber == null -> path
columnNumber == null -> "$path:$lineNumber"
else -> "$path:$lineNumber:$columnNumber"
}
}
fun PsiElement.lineNumber(): Int? {
val doc = PsiDocumentManager.getInstance(project).getDocument(containingFile)
// IJ uses 0-based line-numbers; external source browsers use 1-based
return doc?.getLineNumber(textRange.startOffset)?.plus(1)
}
fun PsiElement.columnNumber(): Int? {
val doc = PsiDocumentManager.getInstance(project).getDocument(containingFile)
// IJ uses 0-based line-numbers; external source browsers use 1-based
val lineNumber = doc?.getLineNumber(textRange.startOffset)?.plus(1) ?: return null
return startOffset - doc!!.getLineStartOffset(lineNumber)
}
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