Scratch

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package scratch;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;


public class WikiParser {

    public static void main(String[] args) throws IOException {
        StringBuilder wikipage = new StringBuilder();
        BufferedReader in = new BufferedReader(new InputStreamReader(WikiParser.class.getResourceAsStream("wiki.html")));
        String line;
        while ((line = in.readLine()) != null) {
            wikipage.append(line);
        }
        in.close();
        String wiki = wikipage.toString();
        Ctx page = wikiPage("... BBCode");
        wiki = wiki.replace("{$title}", page.title).replace("{$vzcontent}", page.vz).replace("{$content}", page.page);
        System.out.println(wiki);
    }

    public static Ctx wikiPage(String str) {
        StringBuilder result = new StringBuilder();
        Ctx ctx = new Ctx();
        for (int i = 0; i < str.length(); i++) {
            char c = str.charAt(i);
            if (c == '[') {
                String tag = nextTag(str, i);
                i += tag.length() - 1;
                if (tag.equalsIgnoreCase("(list)")) {
                    ctx.rec++;
                    result.append("<ol>");
                } else if (tag.equalsIgnoreCase("(/list)")) {
                    result.append("</ol>");
                    ctx.rec--;
                } else if (tag.equalsIgnoreCase("(*)")) {
                    result.append("<li>");
                } else if (tag.equalsIgnoreCase("(/*)")) {
                    result.append("</li>");
                } else if (tag.equalsIgnoreCase("(code)")) {
                    if (!ctx.code) {
                        result.append("<p class='codeBox'>");
                        ctx.code = true;
                    }
                } else if (tag.equalsIgnoreCase("(/code)
")) {
                    if (ctx.code) {
                        result.append("</p>");
                        ctx.code = false;
                    }
                } else if (tag.equalsIgnoreCase("(h)")) {
                    result.append("<a name='hl");
                    result.append(ctx.headlines.size());
                    result.append("'><h");
                    if (ctx.rec > 4) {
                        result.append(4);
                    } else {
                        result.append(ctx.rec);
                    }
                    result.append(">");
                    StringBuilder sb = new StringBuilder();
                    int x = i+1;
                    while(x < str.length() && str.charAt(x) != '['){
                        sb.append(str.charAt(x));
                        x++;
                    }
                    ctx.headlines.add(sb.toString());
                } else if (tag.equalsIgnoreCase("(/h)")) {
                    result.append("</h");
                    if (ctx.rec > 4) {
                        result.append(4);
                    } else {
                        result.append(ctx.rec);
                    }
                    result.append("></a>");
                } else if (tag.equalsIgnoreCase("(b)")) {
                    if (!ctx.bold) {
                        result.append("<b>");
                        ctx.bold = true;
                    }
                } else if (tag.equalsIgnoreCase("(/b)")) {
                    if (ctx.bold) {
                        result.append("</b>");
                        ctx.bold = false;
                    }
                } else if (tag.equalsIgnoreCase("(i)")) {
                    if (!ctx.italic) {
                        result.append("<i>");
                        ctx.italic = true;
                    }
                } else if (tag.equalsIgnoreCase("(/i)")) {
                    if (ctx.italic) {
                        result.append("</i>");
                        ctx.italic = false;
                    }
                } else if (tag.equalsIgnoreCase("(u)")) {
                    if (!ctx.underline) {
                        result.append("<u>");
                        ctx.underline = true;
                    }
                } else if (tag.equalsIgnoreCase("(/u)")) {
                    if (ctx.underline) {
                        result.append("</u>");
                        ctx.underline = false;
                    }
                } else if (tag.startsWith("[url=") || tag.startsWith("[URL=")) {
                    result.append("<a href='");
                    result.append(tag.substring(5, tag.length() - 1));
                    result.append("'>");
                } else if (tag.equalsIgnoreCase("(/url)")) {
                    result.append("</a>");
                } else if (tag.equalsIgnoreCase("(img)")) {
                    result.append("<img alt='Bild' src='");
                } else if (tag.equalsIgnoreCase("(/img)")) {
                    result.append("'>");
                } else if (tag.equals("(q)")) {
                    result.append("<blockquote>");
                } else if (tag.equalsIgnoreCase("(/q)")) {
                    result.append("</blockquote>");
                } else if (tag.startsWith("[title=") || tag.startsWith("[TITLE=")) {
                    ctx.title = tag.substring(7, tag.length() - 1);
                }

            } else {
                result.append(chr(c));
            }
        }
        ctx.page = result.toString();
        StringBuilder vzsb = new StringBuilder("<ul>");
        for(int i = 0;i < ctx.headlines.size();i++){
            String hline = (String)ctx.headlines.get(i);
            vzsb.append("<li>");
            vzsb.append("<a href='#hl");
            vzsb.append(i);
            vzsb.append("'>");
            for(char c : hline.toCharArray()){
                vzsb.append(chr(c));
            }
            vzsb.append("</a>");
            vzsb.append("</li>");
        }
        vzsb.append("</ul>");
        ctx.vz = vzsb.toString();
        return ctx;
    }

    private static String nextTag(String str, int i) {
        StringBuilder tagres = new StringBuilder();
        while (i < str.length()) {
            char tc = str.charAt(i);
            i++;
            tagres.append(tc);
            if (tc == ']') {
                break;
            }
        }
        return tagres.toString();
    }

    private static class Ctx {

        int rec = 1;
        String page = "Kein Inhalt...";
        String title = "Unbenannt";
        String vz = "";
        boolean code = false;
        boolean bold = false;
        boolean italic = false;
        boolean underline = false;
        ArrayList headlines = new ArrayList();
    }

    private static String chr(char c) {
        if (c == '&') {
            return "&amp;";
        } else if (c == '<') {
            return "&lt;";
        } else if (c == '>') {
            return "&gt;";
        } else if (c == '\n') {
            return "<br />";
        } else {
            return "" + c;
        }
    }
}

<html>
    <head>
        <title>Scratch Hilfe | {$title}</title>
        <style>
            .box {
                -wekbit-border-radius: 10px;
                -moz-border-radius: 10px;
                border-radius: 10px;
                box-shadow: 0px 0px 20px orange;
                background-color: orange;
                padding: 10px;
                margin: 10px;
            }
            .codeBox {
                font-family: 'Lucida Console', 'Bitstream Vera Sans Mono', 'Courier New', Monaco, Courier, monospace;
                background-color: white;
                border: 2px dotted gray;
                padding: 5px;
            }
            .vzBox {
                padding: 5px;
                border: 1px solid gray;
                background-color: white;
                width: 400px;
            }
        </style>
    </head>
    <body>
        <div class="box">
            <img src="http://wiki.scratch.mit.edu/skins/scratch/logo.png" />
        </div>
        <div class="box">
            <h1> {$title} </h1>
            <div class="vzBox">
                <p align="center"><b> Inhaltsverzeichniss </b></p>
                {$vzcontent}
            </div>
            {$content}
        </div>
        <div class="box">
            <a href="">Aendern</a> | 
            <a href="">Neuer Eintrag</a> | 
            <a href="mailto:ZeroLuckBGN@googlemail.com">E-Mail</a>
        </div>
    </body>
</html>