+++ /dev/null
-/*
- * Sone - FreenetLinkParser.java - Copyright © 2010 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.text;
-
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.Reader;
-import java.io.StringReader;
-import java.net.MalformedURLException;
-import java.util.logging.Level;
-import java.util.logging.Logger;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import net.pterodactylus.sone.core.Core;
-import net.pterodactylus.sone.data.Post;
-import net.pterodactylus.sone.data.Sone;
-import net.pterodactylus.sone.template.SoneAccessor;
-import net.pterodactylus.util.logging.Logging;
-import net.pterodactylus.util.template.TemplateContextFactory;
-import net.pterodactylus.util.template.TemplateParser;
-import freenet.keys.FreenetURI;
-
-/**
- * {@link Parser} implementation that can recognize Freenet URIs.
- *
- * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
- */
-public class FreenetLinkParser implements Parser<FreenetLinkParserContext> {
-
- /** The logger. */
- private static final Logger logger = Logging.getLogger(FreenetLinkParser.class);
-
- /** Pattern to detect whitespace. */
- private static final Pattern whitespacePattern = Pattern.compile("[\\u000a\u0020\u00a0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u200c\u200d\u202f\u205f\u2060\u2800\u3000]");
-
- /**
- * Enumeration for all recognized link types.
- *
- * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
- */
- private enum LinkType {
-
- /** Link is a KSK. */
- KSK,
-
- /** Link is a CHK. */
- CHK,
-
- /** Link is an SSK. */
- SSK,
-
- /** Link is a USK. */
- USK,
-
- /** Link is HTTP. */
- HTTP,
-
- /** Link is HTTPS. */
- HTTPS,
-
- /** Link is a Sone. */
- SONE,
-
- /** Link is a post. */
- POST,
-
- }
-
- /** The core. */
- private final Core core;
-
- /** The template factory. */
- private final TemplateContextFactory templateContextFactory;
-
- /**
- * Creates a new freenet link parser.
- *
- * @param core
- * The core
- * @param templateContextFactory
- * The template context factory
- */
- public FreenetLinkParser(Core core, TemplateContextFactory templateContextFactory) {
- this.core = core;
- this.templateContextFactory = templateContextFactory;
- }
-
- //
- // PART METHODS
- //
-
- /**
- * {@inheritDoc}
- */
- @Override
- public Part parse(FreenetLinkParserContext context, Reader source) throws IOException {
- PartContainer parts = new PartContainer();
- BufferedReader bufferedReader = (source instanceof BufferedReader) ? (BufferedReader) source : new BufferedReader(source);
- String line;
- boolean lastLineEmpty = true;
- int emptyLines = 0;
- while ((line = bufferedReader.readLine()) != null) {
- if (line.trim().length() == 0) {
- if (lastLineEmpty) {
- continue;
- }
- parts.add(createPlainTextPart("\n"));
- ++emptyLines;
- lastLineEmpty = emptyLines == 2;
- continue;
- }
- emptyLines = 0;
- boolean lineComplete = true;
- while (line.length() > 0) {
- int nextKsk = line.indexOf("KSK@");
- int nextChk = line.indexOf("CHK@");
- int nextSsk = line.indexOf("SSK@");
- int nextUsk = line.indexOf("USK@");
- int nextHttp = line.indexOf("http://");
- int nextHttps = line.indexOf("https://");
- int nextSone = line.indexOf("sone://");
- int nextPost = line.indexOf("post://");
- if ((nextKsk == -1) && (nextChk == -1) && (nextSsk == -1) && (nextUsk == -1) && (nextHttp == -1) && (nextHttps == -1) && (nextSone == -1) && (nextPost == -1)) {
- if (lineComplete && !lastLineEmpty) {
- parts.add(createPlainTextPart("\n" + line));
- } else {
- parts.add(createPlainTextPart(line));
- }
- break;
- }
- int next = Integer.MAX_VALUE;
- LinkType linkType = null;
- if ((nextKsk > -1) && (nextKsk < next)) {
- next = nextKsk;
- linkType = LinkType.KSK;
- }
- if ((nextChk > -1) && (nextChk < next)) {
- next = nextChk;
- linkType = LinkType.CHK;
- }
- if ((nextSsk > -1) && (nextSsk < next)) {
- next = nextSsk;
- linkType = LinkType.SSK;
- }
- if ((nextUsk > -1) && (nextUsk < next)) {
- next = nextUsk;
- linkType = LinkType.USK;
- }
- if ((nextHttp > -1) && (nextHttp < next)) {
- next = nextHttp;
- linkType = LinkType.HTTP;
- }
- if ((nextHttps > -1) && (nextHttps < next)) {
- next = nextHttps;
- linkType = LinkType.HTTPS;
- }
- if ((nextSone > -1) && (nextSone < next)) {
- next = nextSone;
- linkType = LinkType.SONE;
- }
- if ((nextPost > -1) && (nextPost < next)) {
- next = nextPost;
- linkType = LinkType.POST;
- }
- if (linkType == LinkType.SONE) {
- if (next > 0) {
- parts.add(createPlainTextPart(line.substring(0, next)));
- }
- if (line.length() >= (next + 7 + 43)) {
- String soneId = line.substring(next + 7, next + 50);
- Sone sone = core.getSone(soneId, false);
- if (sone != null) {
- parts.add(createInSoneLinkPart("viewSone.html?sone=" + soneId, SoneAccessor.getNiceName(sone)));
- } else {
- parts.add(createPlainTextPart(line.substring(next, next + 50)));
- }
- line = line.substring(next + 50);
- } else {
- parts.add(createPlainTextPart(line.substring(next)));
- line = "";
- }
- continue;
- }
- if (linkType == LinkType.POST) {
- if (next > 0) {
- parts.add(createPlainTextPart(line.substring(0, next)));
- }
- if (line.length() >= (next + 7 + 36)) {
- String postId = line.substring(next + 7, next + 43);
- Post post = core.getPost(postId, false);
- if ((post != null) && (post.getSone() != null)) {
- String postText = post.getText();
- postText = postText.substring(0, Math.min(postText.length(), 20)) + "…";
- Sone postSone = post.getSone();
- parts.add(createInSoneLinkPart("viewPost.html?post=" + postId, postText, (postSone == null) ? postText : SoneAccessor.getNiceName(post.getSone())));
- } else {
- parts.add(createPlainTextPart(line.substring(next, next + 43)));
- }
- line = line.substring(next + 43);
- } else {
- parts.add(createPlainTextPart(line.substring(next)));
- line = "";
- }
- continue;
- }
- if ((next >= 8) && (line.substring(next - 8, next).equals("freenet:"))) {
- next -= 8;
- line = line.substring(0, next) + line.substring(next + 8);
- }
- Matcher matcher = whitespacePattern.matcher(line);
- int nextSpace = matcher.find(next) ? matcher.start() : line.length();
- if (nextSpace > (next + 4)) {
- if (!lastLineEmpty && lineComplete) {
- parts.add(createPlainTextPart("\n" + line.substring(0, next)));
- } else {
- parts.add(createPlainTextPart(line.substring(0, next)));
- }
- String link = line.substring(next, nextSpace);
- String name = link;
- logger.log(Level.FINER, "Found link: %s", link);
- logger.log(Level.FINEST, "Next: %d, CHK: %d, SSK: %d, USK: %d", new Object[] { next, nextChk, nextSsk, nextUsk });
-
- if ((linkType == LinkType.KSK) || (linkType == LinkType.CHK) || (linkType == LinkType.SSK) || (linkType == LinkType.USK)) {
- FreenetURI uri;
- if (name.indexOf('?') > -1) {
- name = name.substring(0, name.indexOf('?'));
- }
- if (name.endsWith("/")) {
- name = name.substring(0, name.length() - 1);
- }
- try {
- uri = new FreenetURI(name);
- name = uri.lastMetaString();
- if (name == null) {
- name = uri.getDocName();
- }
- if (name == null) {
- name = link.substring(0, Math.min(9, link.length()));
- }
- boolean fromPostingSone = ((linkType == LinkType.SSK) || (linkType == LinkType.USK)) && link.substring(4, Math.min(link.length(), 47)).equals(context.getPostingSone().getId());
- parts.add(fromPostingSone ? createTrustedFreenetLinkPart(link, name) : createFreenetLinkPart(link, name));
- } catch (MalformedURLException mue1) {
- /* not a valid link, insert as plain text. */
- parts.add(createPlainTextPart(link));
- } catch (NullPointerException npe1) {
- /* FreenetURI sometimes throws these, too. */
- parts.add(createPlainTextPart(link));
- } catch (ArrayIndexOutOfBoundsException aioobe1) {
- /* oh, and these, too. */
- parts.add(createPlainTextPart(link));
- }
- } else if ((linkType == LinkType.HTTP) || (linkType == LinkType.HTTPS)) {
- name = link.substring(linkType == LinkType.HTTP ? 7 : 8);
- int firstSlash = name.indexOf('/');
- int lastSlash = name.lastIndexOf('/');
- if ((lastSlash - firstSlash) > 3) {
- name = name.substring(0, firstSlash + 1) + "…" + name.substring(lastSlash);
- }
- if (name.endsWith("/")) {
- name = name.substring(0, name.length() - 1);
- }
- if (((name.indexOf('/') > -1) && (name.indexOf('.') < name.lastIndexOf('.', name.indexOf('/'))) || ((name.indexOf('/') == -1) && (name.indexOf('.') < name.lastIndexOf('.')))) && name.startsWith("www.")) {
- name = name.substring(4);
- }
- if (name.indexOf('?') > -1) {
- name = name.substring(0, name.indexOf('?'));
- }
- link = "?_CHECKED_HTTP_=" + link;
- parts.add(createInternetLinkPart(link, name));
- }
- line = line.substring(nextSpace);
- } else {
- if (!lastLineEmpty && lineComplete) {
- parts.add(createPlainTextPart("\n" + line.substring(0, next + 4)));
- } else {
- parts.add(createPlainTextPart(line.substring(0, next + 4)));
- }
- line = line.substring(next + 4);
- }
- lineComplete = false;
- }
- lastLineEmpty = false;
- }
- for (int partIndex = parts.size() - 1; partIndex >= 0; --partIndex) {
- if (!parts.getPart(partIndex).toString().equals("\n")) {
- break;
- }
- parts.removePart(partIndex);
- }
- return parts;
- }
-
- //
- // PRIVATE METHODS
- //
-
- /**
- * Creates a new plain text part based on a template.
- *
- * @param text
- * The text to display
- * @return The part that displays the given text
- */
- private Part createPlainTextPart(String text) {
- return new TemplatePart(templateContextFactory, TemplateParser.parse(new StringReader("<% text|html>"))).set("text", text);
- }
-
- /**
- * Creates a new part based on a template that links to a site within the
- * normal internet.
- *
- * @param link
- * The target of the link
- * @param name
- * The name of the link
- * @return The part that displays the link
- */
- private Part createInternetLinkPart(String link, String name) {
- return new TemplatePart(templateContextFactory, TemplateParser.parse(new StringReader("<a class=\"internet\" href=\"/<% link|html>\" title=\"<% link|html>\"><% name|html></a>"))).set("link", link).set("name", name);
- }
-
- /**
- * Creates a new part based on a template that links to a site within
- * freenet.
- *
- * @param link
- * The target of the link
- * @param name
- * The name of the link
- * @return The part that displays the link
- */
- private Part createFreenetLinkPart(String link, String name) {
- return new TemplatePart(templateContextFactory, TemplateParser.parse(new StringReader("<a class=\"freenet\" href=\"/<% link|html>\" title=\"<% link|html>\"><% name|html></a>"))).set("link", link).set("name", name);
- }
-
- /**
- * Creates a new part based on a template that links to a page in the
- * poster’s keyspace.
- *
- * @param link
- * The target of the link
- * @param name
- * The name of the link
- * @return The part that displays the link
- */
- private Part createTrustedFreenetLinkPart(String link, String name) {
- return new TemplatePart(templateContextFactory, TemplateParser.parse(new StringReader("<a class=\"freenet-trusted\" href=\"/<% link|html>\" title=\"<% link|html>\"><% name|html></a>"))).set("link", link).set("name", name);
- }
-
- /**
- * Creates a new part based on a template that links to a page in Sone.
- *
- * @param link
- * The target of the link
- * @param name
- * The name of the link
- * @return The part that displays the link
- */
- private Part createInSoneLinkPart(String link, String name) {
- return createInSoneLinkPart(link, name, name);
- }
-
- /**
- * Creates a new part based on a template that links to a page in Sone.
- *
- * @param link
- * The target of the link
- * @param name
- * The name of the link
- * @param title
- * The title attribute of the link
- * @return The part that displays the link
- */
- private Part createInSoneLinkPart(String link, String name, String title) {
- return new TemplatePart(templateContextFactory, TemplateParser.parse(new StringReader("<a class=\"in-sone\" href=\"<%link|html>\" title=\"<%title|html>\"><%name|html></a>"))).set("link", link).set("name", name).set("title", title);
- }
-
-}
projects / Sone.git / blobdiff