+++ /dev/null
-/*
- * Sone - ParserFilter.java - Copyright © 2011–2016 David Roden
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package net.pterodactylus.sone.template;
-
-import static java.lang.String.valueOf;
-import static net.pterodactylus.sone.utils.NumberParsers.parseInt;
-
-import java.io.StringReader;
-import java.io.StringWriter;
-import java.io.UnsupportedEncodingException;
-import java.io.Writer;
-import java.net.URLEncoder;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-
-import javax.annotation.Nonnull;
-
-import net.pterodactylus.sone.core.Core;
-import net.pterodactylus.sone.data.Sone;
-import net.pterodactylus.sone.text.FreemailPart;
-import net.pterodactylus.sone.text.FreenetLinkPart;
-import net.pterodactylus.sone.text.LinkPart;
-import net.pterodactylus.sone.text.Part;
-import net.pterodactylus.sone.text.PlainTextPart;
-import net.pterodactylus.sone.text.PostPart;
-import net.pterodactylus.sone.text.SonePart;
-import net.pterodactylus.sone.text.SoneTextParser;
-import net.pterodactylus.sone.text.SoneTextParserContext;
-import net.pterodactylus.util.template.Filter;
-import net.pterodactylus.util.template.Template;
-import net.pterodactylus.util.template.TemplateContext;
-import net.pterodactylus.util.template.TemplateContextFactory;
-import net.pterodactylus.util.template.TemplateParser;
-
-import com.google.common.base.Function;
-import com.google.common.base.Optional;
-
-/**
- * Filter that filters a given text through a {@link SoneTextParser}.
- *
- * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
- */
-public class ParserFilter implements Filter {
-
- /** The core. */
- private final Core core;
-
- /** The link parser. */
- private final SoneTextParser soneTextParser;
-
- /** The template context factory. */
- private final TemplateContextFactory templateContextFactory;
-
- /** The template for {@link PlainTextPart}s. */
- private static final Template plainTextTemplate = TemplateParser.parse(new StringReader("<%text|html>"));
-
- /** The template for {@link FreenetLinkPart}s. */
- private static final Template linkTemplate = TemplateParser.parse(new StringReader("<a class=\"<%cssClass|html>\" href=\"<%link|html>\" title=\"<%title|html>\"><%text|html></a>"));
-
- /**
- * Creates a new filter that runs its input through a {@link SoneTextParser}
- * .
- *
- * @param core
- * The core
- * @param templateContextFactory
- * The context factory for rendering the parts
- * @param soneTextParser
- * The Sone text parser
- */
- public ParserFilter(Core core, TemplateContextFactory templateContextFactory, SoneTextParser soneTextParser) {
- this.core = core;
- this.templateContextFactory = templateContextFactory;
- this.soneTextParser = soneTextParser;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public Object format(TemplateContext templateContext, Object data, Map<String, Object> parameters) {
- String text = valueOf(data);
- int length = parseInt(valueOf(parameters.get("length")), -1);
- int cutOffLength = parseInt(valueOf(parameters.get("cut-off-length")), length);
- Object sone = parameters.get("sone");
- if (sone instanceof String) {
- sone = core.getSone((String) sone).orNull();
- }
- SoneTextParserContext context = new SoneTextParserContext((Sone) sone);
- StringWriter parsedTextWriter = new StringWriter();
- Iterable<Part> parts = soneTextParser.parse(text, context);
- if (length > -1) {
- int allPartsLength = 0;
- List<Part> shortenedParts = new ArrayList<Part>();
- for (Part part : parts) {
- if (part instanceof PlainTextPart) {
- String longText = part.getText();
- if (allPartsLength < cutOffLength) {
- if ((allPartsLength + longText.length()) > cutOffLength) {
- shortenedParts.add(new PlainTextPart(longText.substring(0, cutOffLength - allPartsLength) + "…"));
- } else {
- shortenedParts.add(part);
- }
- }
- allPartsLength += longText.length();
- } else if (part instanceof LinkPart) {
- if (allPartsLength < cutOffLength) {
- shortenedParts.add(part);
- }
- allPartsLength += part.getText().length();
- } else {
- if (allPartsLength < cutOffLength) {
- shortenedParts.add(part);
- }
- }
- }
- if (allPartsLength >= length) {
- parts = shortenedParts;
- }
- }
- render(parsedTextWriter, parts);
- return parsedTextWriter.toString();
- }
-
- //
- // PRIVATE METHODS
- //
-
- /**
- * Renders the given parts.
- *
- * @param writer
- * The writer to render the parts to
- * @param parts
- * The parts to render
- */
- private void render(Writer writer, Iterable<Part> parts) {
- for (Part part : parts) {
- render(writer, part);
- }
- }
-
- /**
- * Renders the given part.
- *
- * @param writer
- * The writer to render the part to
- * @param part
- * The part to render
- */
- @SuppressWarnings("unchecked")
- private void render(Writer writer, Part part) {
- if (part instanceof PlainTextPart) {
- render(writer, (PlainTextPart) part);
- } else if (part instanceof FreenetLinkPart) {
- render(writer, (FreenetLinkPart) part);
- } else if (part instanceof LinkPart) {
- render(writer, (LinkPart) part);
- } else if (part instanceof SonePart) {
- render(writer, (SonePart) part);
- } else if (part instanceof PostPart) {
- render(writer, (PostPart) part);
- } else if (part instanceof FreemailPart) {
- render(writer, (FreemailPart) part);
- } else if (part instanceof Iterable<?>) {
- render(writer, (Iterable<Part>) part);
- }
- }
-
- /**
- * Renders the given plain-text part.
- *
- * @param writer
- * The writer to render the part to
- * @param plainTextPart
- * The part to render
- */
- private void render(Writer writer, PlainTextPart plainTextPart) {
- TemplateContext templateContext = templateContextFactory.createTemplateContext();
- templateContext.set("text", plainTextPart.getText());
- plainTextTemplate.render(templateContext, writer);
- }
-
- /**
- * Renders the given freenet link part.
- *
- * @param writer
- * The writer to render the part to
- * @param freenetLinkPart
- * The part to render
- */
- private void render(Writer writer, FreenetLinkPart freenetLinkPart) {
- renderLink(writer, "/" + freenetLinkPart.getLink(), freenetLinkPart.getText(), freenetLinkPart.getTitle(), freenetLinkPart.isTrusted() ? "freenet-trusted" : "freenet");
- }
-
- /**
- * Renders the given link part.
- *
- * @param writer
- * The writer to render the part to
- * @param linkPart
- * The part to render
- */
- private void render(Writer writer, LinkPart linkPart) {
- try {
- renderLink(writer, "/external-link/?_CHECKED_HTTP_=" + URLEncoder.encode(linkPart.getLink(), "UTF-8"), linkPart.getText(), linkPart.getTitle(), "internet");
- } catch (UnsupportedEncodingException uee1) {
- /* not possible for UTF-8. */
- throw new RuntimeException("The JVM does not support UTF-8 encoding!", uee1);
- }
- }
-
- /**
- * Renders the given Sone part.
- *
- * @param writer
- * The writer to render the part to
- * @param sonePart
- * The part to render
- */
- private void render(Writer writer, SonePart sonePart) {
- if ((sonePart.getSone() != null) && (sonePart.getSone().getName() != null)) {
- renderLink(writer, "viewSone.html?sone=" + sonePart.getSone().getId(), SoneAccessor.getNiceName(sonePart.getSone()), SoneAccessor.getNiceName(sonePart.getSone()), "in-sone");
- } else {
- renderLink(writer, "/WebOfTrust/ShowIdentity?id=" + sonePart.getSone().getId(), sonePart.getSone().getId(), sonePart.getSone().getId(), "in-sone");
- }
- }
-
- /**
- * Renders the given post part.
- *
- * @param writer
- * The writer to render the part to
- * @param postPart
- * The part to render
- */
- private void render(Writer writer, PostPart postPart) {
- SoneTextParser parser = new SoneTextParser(core, core);
- SoneTextParserContext parserContext = new SoneTextParserContext(postPart.getPost().getSone());
- Iterable<Part> parts = parser.parse(postPart.getPost().getText(), parserContext);
- StringBuilder excerpt = new StringBuilder();
- for (Part part : parts) {
- excerpt.append(part.getText());
- if (excerpt.length() > 20) {
- int lastSpace = excerpt.lastIndexOf(" ", 20);
- if (lastSpace > -1) {
- excerpt.setLength(lastSpace);
- } else {
- excerpt.setLength(20);
- }
- excerpt.append("…");
- break;
- }
- }
- renderLink(writer, "viewPost.html?post=" + postPart.getPost().getId(), excerpt.toString(), SoneAccessor.getNiceName(postPart.getPost().getSone()), "in-sone");
- }
-
- private void render(@Nonnull Writer writer, @Nonnull FreemailPart freemailPart) {
- Optional<Sone> sone = core.getSone(freemailPart.getIdentityId());
- String soneName = sone.transform(new Function<Sone, String>() {
- @Nonnull
- @Override
- public String apply(Sone input) {
- return SoneAccessor.getNiceName(input);
- }
- }).or(freemailPart.getIdentityId());
- renderLink(writer,
- "/Freemail/NewMessage?to=" + freemailPart.getIdentityId(),
- String.format("%s@%s.freemail", freemailPart.getEmailLocalPart(), soneName),
- String.format("%s\n%s@%s.freemail", soneName, freemailPart.getEmailLocalPart(), freemailPart.getFreemailId()),
- "in-sone");
- }
-
- /**
- * Renders the given link.
- *
- * @param writer
- * The writer to render the link to
- * @param link
- * The link to render
- * @param text
- * The text of the link
- * @param title
- * The title of the link
- * @param cssClass
- * The CSS class of the link
- */
- private void renderLink(Writer writer, String link, String text, String title, String cssClass) {
- TemplateContext templateContext = templateContextFactory.createTemplateContext();
- templateContext.set("cssClass", cssClass);
- templateContext.set("link", link);
- templateContext.set("text", text);
- templateContext.set("title", title);
- linkTemplate.render(templateContext, writer);
- }
-
-}
projects / Sone.git / blobdiff