Rewriter Sone text parser to separate the parser from the generated HTML.

[Sone.git] / src / main / java / net / pterodactylus / sone / template / ParserFilter.java

diff --git a/src/main/java/net/pterodactylus/sone/template/ParserFilter.java b/src/main/java/net/pterodactylus/sone/template/ParserFilter.java
index db945b5..02d12f0 100644 (file)
--- a/src/main/java/net/pterodactylus/sone/template/ParserFilter.java
+++ b/src/main/java/net/pterodactylus/sone/template/ParserFilter.java
@@ -19,19 +19,29 @@ package net.pterodactylus.sone.template;
 
 import java.io.IOException;
 import java.io.StringReader;
+import java.io.StringWriter;
+import java.io.Writer;
 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.Page.Request;
 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>
  */
@@ -41,11 +51,20 @@ public class ParserFilter implements Filter {
        private final Core core;
 
        /** The link parser. */
-       private final FreenetLinkParser linkParser;
+       private final SoneTextParser textParser;
+
+       /** The template context factory. */
+       private final TemplateContextFactory templateContextFactory;
+
+       /** The template for {@link PlainTextPart}s. */
+       private final Template plainTextTemplate = TemplateParser.parse(new StringReader("<%text|html>"));
+
+       /** The template for {@link FreenetLinkPart}s. */
+       private 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
@@ -54,7 +73,8 @@ public class ParserFilter implements Filter {
         */
        public ParserFilter(Core core, TemplateContextFactory templateContextFactory) {
                this.core = core;
-               linkParser = new FreenetLinkParser(core, templateContextFactory);
+               this.templateContextFactory = templateContextFactory;
+               textParser = new SoneTextParser(core);
        }
 
        /**
@@ -71,13 +91,75 @@ public class ParserFilter implements Filter {
                if (sone == null) {
                        sone = core.getSone(soneKey, false);
                }
-               FreenetLinkParserContext context = new FreenetLinkParserContext((Request) templateContext.get("request"), sone);
+               Request request = (Request) templateContext.get("request");
+               SoneTextParserContext context = new SoneTextParserContext(request, sone);
+               StringWriter parsedTextWriter = new StringWriter();
                try {
-                       return linkParser.parse(context, new StringReader(text));
+                       render(parsedTextWriter, textParser.parse(context, new StringReader(text)));
                } catch (IOException ioe1) {
-                       /* no exceptions in a StringReader, ignore. */
+                       /* no exceptions in a StringReader or StringWriter, ignore. */
+               }
+               return parsedTextWriter.toString();
+       }
+
+       //
+       // PRIVATE METHODS
+       //
+
+       private void render(Writer writer, Iterable<Part> parts) throws IOException {
+               for (Part part : parts) {
+                       render(writer, part);
+               }
+       }
+
+       private void render(Writer writer, Part part) throws IOException {
+               if (part instanceof PlainTextPart) {
+                       render(writer, (PlainTextPart) part);
+               } else if (part instanceof FreenetLinkPart) {
+                       render(writer, (FreenetLinkPart) part);
+               }
+       }
+
+       private void render(Writer writer, PlainTextPart plainTextPart) throws IOException {
+               TemplateContext templateContext = templateContextFactory.createTemplateContext();
+               templateContext.set("text", plainTextPart.getText());
+               plainTextTemplate.render(templateContext, writer);
+       }
+
+       private void render(Writer writer, FreenetLinkPart freenetLinkPart) throws IOException {
+               renderLink(writer, "/" + freenetLinkPart.getLink(), freenetLinkPart.getText(), freenetLinkPart.getTitle(), freenetLinkPart.isTrusted() ? "freenet-trusted" : "freenet");
+       }
+
+       private void render(Writer writer, LinkPart linkPart) throws IOException {
+               renderLink(writer, "/?_CHECKED_HTTP_=" + linkPart.getLink(), linkPart.getText(), linkPart.getTitle(), "internet");
+       }
+
+       private void render(Writer writer, SonePart sonePart) throws IOException {
+               renderLink(writer, "viewSone.html?sone=" + sonePart.getSone().getId(), SoneAccessor.getNiceName(sonePart.getSone()), SoneAccessor.getNiceName(sonePart.getSone()), "in-sone");
+       }
+
+       private void render(Writer writer, PostPart postPart) throws IOException {
+               renderLink(writer, "viewPost.html?post=" + postPart.getPost().getId(), getExcerpt(postPart.getPost().getText(), 20), SoneAccessor.getNiceName(postPart.getPost().getSone()), "in-sone");
+       }
+
+       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
+       //
+
+       private static String getExcerpt(String text, int length) {
+               if (text.length() > length) {
+                       return text.substring(0, length) + "…";
                }
-               return null;
+               return text;
        }
 
 }