X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Ftemplate%2FParserFilter.java;h=90744e722b21a7d555bfe9ba6e2d0d8cd1b389c8;hp=477e97275724cf99462d698b3cc9340405308ccf;hb=689913e068c06d6cd4bdff17f5da30be2000df6c;hpb=804dc806016422d29d598a2518e38c513d6e0933

diff --git a/src/main/java/net/pterodactylus/sone/template/ParserFilter.java b/src/main/java/net/pterodactylus/sone/template/ParserFilter.java
index 477e972..90744e7 100644
--- a/src/main/java/net/pterodactylus/sone/template/ParserFilter.java
+++ b/src/main/java/net/pterodactylus/sone/template/ParserFilter.java
@@ -1,5 +1,5 @@
 /*
- * Sone - ParserFilter.java - Copyright © 2011 David Roden
+ * Sone - ParserFilter.java - Copyright © 2011–2012 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
@@ -19,18 +19,32 @@ package net.pterodactylus.sone.template;
 
 import java.io.IOException;
 import java.io.StringReader;
+import java.io.StringWriter;
+import java.io.Writer;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Map;
 
 import net.pterodactylus.sone.core.Core;
 import net.pterodactylus.sone.data.Sone;
-import net.pterodactylus.sone.text.FreenetLinkParser;
-import net.pterodactylus.sone.text.FreenetLinkParserContext;
+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.sone.web.page.FreenetRequest;
+import net.pterodactylus.util.number.Numbers;
 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;
 
 /**
- * Filter that filters a given text through a {@link FreenetLinkParser}.
+ * Filter that filters a given text through a {@link SoneTextParser}.
  *
  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  */
@@ -40,43 +54,239 @@ public class ParserFilter implements Filter {
 	private final Core core;
 
 	/** The link parser. */
-	private final FreenetLinkParser linkParser;
+	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 FreenetLinkParser}.
+	 * 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) {
+	public ParserFilter(Core core, TemplateContextFactory templateContextFactory, SoneTextParser soneTextParser) {
 		this.core = core;
-		linkParser = new FreenetLinkParser(core, templateContextFactory);
+		this.templateContextFactory = templateContextFactory;
+		this.soneTextParser = soneTextParser;
 	}
 
 	/**
 	 * {@inheritDoc}
 	 */
 	@Override
-	public Object format(TemplateContext templateContext, Object data, Map<String, String> parameters) {
+	public Object format(TemplateContext templateContext, Object data, Map<String, Object> parameters) {
 		String text = String.valueOf(data);
-		String soneKey = parameters.get("sone");
-		if (soneKey == null) {
-			soneKey = "sone";
-		}
-		Sone sone = (Sone) templateContext.get(soneKey);
-		if (sone == null) {
-			sone = core.getSone(soneKey, false);
+		int length = Numbers.safeParseInteger(parameters.get("length"), Numbers.safeParseInteger(templateContext.get(String.valueOf(parameters.get("length"))), -1));
+		int cutOffLength = Numbers.safeParseInteger(parameters.get("cut-off-length"), Numbers.safeParseInteger(templateContext.get(String.valueOf(parameters.get("cut-off-length"))), length));
+		Object sone = parameters.get("sone");
+		if (sone instanceof String) {
+			sone = core.getSone((String) sone, false);
 		}
-		FreenetLinkParserContext context = new FreenetLinkParserContext(sone);
+		FreenetRequest request = (FreenetRequest) templateContext.get("request");
+		SoneTextParserContext context = new SoneTextParserContext(request, (Sone) sone);
+		StringWriter parsedTextWriter = new StringWriter();
 		try {
-			return linkParser.parse(context, new StringReader(text));
+			Iterable<Part> parts = soneTextParser.parse(context, new StringReader(text));
+			if (length > -1) {
+				int allPartsLength = 0;
+				List<Part> shortenedParts = new ArrayList<Part>();
+				for (Part part : parts) {
+					if (part instanceof PlainTextPart) {
+						String longText = ((PlainTextPart) 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 += ((LinkPart) part).getText().length();
+					} else {
+						if (allPartsLength < cutOffLength) {
+							shortenedParts.add(part);
+						}
+					}
+				}
+				if (allPartsLength >= length) {
+					parts = shortenedParts;
+				}
+			}
+			render(parsedTextWriter, parts);
 		} catch (IOException ioe1) {
-			/* no exceptions in a StringReader, ignore. */
+			/* no exceptions in a StringReader or StringWriter, ignore. */
+		}
+		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 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) {
+		renderLink(writer, "/?_CHECKED_HTTP_=" + linkPart.getLink(), linkPart.getText(), linkPart.getTitle(), "internet");
+	}
+
+	/**
+	 * 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) {
+		renderLink(writer, "viewPost.html?post=" + postPart.getPost().getId(), getExcerpt(postPart.getPost().getText(), 20), SoneAccessor.getNiceName(postPart.getPost().getSone()), "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);
+	}
+
+	//
+	// STATIC METHODS
+	//
+
+	/**
+	 * Returns up to {@code length} characters from the given text, appending
+	 * “…” if the text is longer.
+	 *
+	 * @param text
+	 *            The text to get an excerpt from
+	 * @param length
+	 *            The maximum length of the excerpt (without the ellipsis)
+	 * @return The excerpt of the text
+	 */
+	private static String getExcerpt(String text, int length) {
+		String filteredText = text.replaceAll("(\r\n)+", "\r\n").replaceAll("\n+", "\n").replace("\r\n", " ").replace('\n', ' ');
+		if (filteredText.length() > length) {
+			return filteredText.substring(0, length) + "…";
 		}
-		return null;
+		return filteredText;
 	}
 
 }