1 package net.pterodactylus.sone.template
3 import net.pterodactylus.sone.database.*
4 import net.pterodactylus.sone.text.*
5 import net.pterodactylus.sone.text.Part
6 import net.pterodactylus.sone.utils.*
7 import net.pterodactylus.util.template.*
12 * Renders a number of pre-parsed [Part] into a [String].
14 class RenderFilter(private val soneProvider: SoneProvider, private val soneTextParser: SoneTextParser, htmlFilter: HtmlFilter) : Filter {
16 private val templateContextFactory = TemplateContextFactory().apply {
17 addFilter("html", htmlFilter)
20 override fun format(templateContext: TemplateContext?, data: Any?, parameters: MutableMap<String, Any?>?): Any? {
21 @Suppress("UNCHECKED_CAST")
22 val parts = data as? Iterable<Part> ?: return null
23 val parsedTextWriter = StringWriter()
24 render(parsedTextWriter, parts)
25 return parsedTextWriter.toString()
28 private fun render(writer: Writer, parts: Iterable<Part>) {
29 parts.forEach { render(writer, it) }
32 private fun render(writer: Writer, part: Part) {
33 @Suppress("UNCHECKED_CAST")
35 is PlainTextPart -> render(writer, part)
36 is FreenetLinkPart -> render(writer, part)
37 is LinkPart -> render(writer, part)
38 is SonePart -> render(writer, part)
39 is PostPart -> render(writer, part)
40 is FreemailPart -> render(writer, part)
44 private fun render(writer: Writer, plainTextPart: PlainTextPart) {
45 val templateContext = templateContextFactory.createTemplateContext()
46 templateContext.set("text", plainTextPart.text)
47 plainTextTemplate.render(templateContext, writer)
50 private fun render(writer: Writer, freenetLinkPart: FreenetLinkPart) {
51 renderLink(writer, "/${freenetLinkPart.link}", freenetLinkPart.text, freenetLinkPart.title, if (freenetLinkPart.trusted) "freenet-trusted" else "freenet")
54 private fun render(writer: Writer, linkPart: LinkPart) {
55 renderLink(writer, "/external-link/?_CHECKED_HTTP_=${linkPart.link.urlEncode()}", linkPart.text, linkPart.title, "internet")
58 private fun String.urlEncode(): String = URLEncoder.encode(this, "UTF-8")
60 private fun render(writer: Writer, sonePart: SonePart) {
61 if (sonePart.sone.name != null) {
62 renderLink(writer, "viewSone.html?sone=${sonePart.sone.id}", SoneAccessor.getNiceName(sonePart.sone), SoneAccessor.getNiceName(sonePart.sone), "in-sone")
64 renderLink(writer, "/WebOfTrust/ShowIdentity?id=${sonePart.sone.id}", sonePart.sone.id, sonePart.sone.id, "in-sone")
68 private fun render(writer: Writer, postPart: PostPart) {
69 val parserContext = SoneTextParserContext(postPart.post.sone)
70 val parts = soneTextParser.parse(postPart.post.text, parserContext)
71 val excerpt = StringBuilder()
73 excerpt.append(part.text)
74 if (excerpt.length > 20) {
75 val lastSpace = excerpt.lastIndexOf(" ", 20)
77 excerpt.setLength(lastSpace)
85 renderLink(writer, "viewPost.html?post=${postPart.post.id}", excerpt.toString(), SoneAccessor.getNiceName(postPart.post.sone), "in-sone")
88 private fun render(writer: Writer, freemailPart: FreemailPart) {
89 val sone = soneProvider.getSone(freemailPart.identityId)
90 val soneName = sone?.let(SoneAccessor::getNiceName) ?: freemailPart.identityId
92 "/Freemail/NewMessage?to=${freemailPart.identityId}",
93 "${freemailPart.emailLocalPart}@$soneName.freemail",
94 "$soneName\n${freemailPart.emailLocalPart}@${freemailPart.freemailId}.freemail",
98 private fun renderLink(writer: Writer, link: String, text: String, title: String, cssClass: String) {
99 val templateContext = templateContextFactory.createTemplateContext()
100 templateContext["cssClass"] = cssClass
101 templateContext["link"] = link
102 templateContext["text"] = text
103 templateContext["title"] = title
104 linkTemplate.render(templateContext, writer)
109 private val plainTextTemplate = "<%text|html>".asTemplate()
110 private val linkTemplate = "<a class=\"<%cssClass|html>\" href=\"<%link|html>\" title=\"<%title|html>\"><%text|html></a>".asTemplate()