// wikiCode.java // ------------------------------------- // part of YACY // (C) by Michael Peter Christen; mc@anomic.de // first published on http://www.anomic.de // Frankfurt, Germany, 2004 // // This file ist contributed by Alexander Schier // last major change: 09.08.2004 // // 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 2 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, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA // // Using this software in any meaning (reading, learning, copying, compiling, // running) means that you agree that the Author(s) is (are) not responsible // for cost, loss of data or any harm that may be caused directly or indirectly // by usage of this softare or this documentation. The usage of this software // is on your own risk. The installation and usage (starting/running) of this // software may allow other people or application to access your computer and // any attached devices and is highly dependent on the configuration of the // software which must be done by the user of the software; the author(s) is // (are) also not responsible for proper configuration and usage of the // software, even if provoked by documentation provided together with // the software. // // Any changes to this file according to the GPL as documented in the file // gpl.txt aside this file in the shipment you received can be done to the // lines that follows this copyright notice here, but changes must not be // done inside the copyright notive above. A re-distribution must contain // the intact and unchanged copyright notice. // Contributions and changes to the program code must be marked as such. // Contains contributions from Alexander Schier [AS] // and Marc Nause [MN] package de.anomic.data; import java.io.BufferedReader; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import de.anomic.plasma.plasmaSwitchboard; import de.anomic.server.serverCore; import de.anomic.yacy.yacyCore; public class wikiCode { private String numListLevel=""; private String ListLevel=""; private String defListLevel=""; private plasmaSwitchboard sb; private boolean escape = false; //needed for escape private boolean escaped = false; //needed for
 not getting in the way
    private boolean escapeSpan = false;       //needed for escape symbols [= and =] spanning over several lines 
    private boolean preformatted = false;     //needed for preformatted text
    private boolean preformattedSpan = false; //needed for 
 and 
spanning over several lines private int preindented = 0; //needed for indented
s
    private int escindented = 0;              //needed for indented [=s
        
    public wikiCode(plasmaSwitchboard switchboard){
        sb=switchboard;
    }

    public String transform(String content){
        try {
            return transform(content.getBytes("UTF-8"), sb);
        } catch (UnsupportedEncodingException e) {
            return transform(content.getBytes(), sb);
        }
    }
    public String transform(byte[] content){
        return transform(content, sb);
    }

    public String transform(byte[] content, plasmaSwitchboard switchboard) {
        ByteArrayInputStream bais = new ByteArrayInputStream(content);
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(bais,
                    "UTF-8"));
            String line;
            StringBuffer out = new StringBuffer(content.length);
            try {
                while ((line = br.readLine()) != null) {
                    out.append(transformLine(line, switchboard)).append(
                            serverCore.crlfString);
                }
                return out.toString();
            } catch (UnsupportedEncodingException e1) {
                // can not happen
                return null;
            }
        } catch (IOException e) {
            return "internal error: " + e.getMessage();
        }
    }
    
    public static String replaceHTML(String result) {
        if (result == null) return null;
        int p0;
	
	// avoide html inside
	// Ampersands have to be replaced first. If they were replaced later,
	// other replaced characters containing ampersands would get messed up.
	p0 = 0; while ((p0 = result.indexOf("&", p0)) >= 0) {result = result.substring(0, p0) + "&" + result.substring(p0 + 1); p0++;}
	p0 = 0; while ((p0 = result.indexOf('"', p0)) >= 0) result = result.substring(0, p0) + """ + result.substring(p0 + 1);
	p0 = 0; while ((p0 = result.indexOf("<", p0)) >= 0) result = result.substring(0, p0) + "<" + result.substring(p0 + 1);
	p0 = 0; while ((p0 = result.indexOf(">", p0)) >= 0) result = result.substring(0, p0) + ">" + result.substring(p0 + 1);
	//p0 = 0; while ((p0 = result.indexOf("*", p0)) >= 0) result = result.substring(0, p0) + "•" + result.substring(p0 + 1);
	p0 = 0; while ((p0 = result.indexOf("(C)", p0)) >= 0) result = result.substring(0, p0) + "©" + result.substring(p0 + 3);
	
	return result;
    }

    public String transformLine(String result, plasmaSwitchboard switchboard) {
	// transform page
	int p0, p1;
	boolean defList = false;    //needed for definition lists
        
	result = replaceHTML(result);
	
	//check if line contains any escape symbol or tag for preformatted text 
	//or if we are in an esacpe sequence already or if we are in a preforamtted text
	//if that's the case the program will continue further below 
	//(see code for [= and =] and 
 and 
) [MN] if((result.indexOf("[=")<0)&&(result.indexOf("=]")<0)&&(!escapeSpan)&& (result.indexOf("<pre>")<0)&&(result.indexOf("</pre>")<0)&&(!preformattedSpan)){ // format lines if (result.startsWith(" ")) result = "" + result + ""; if (result.startsWith("----")) result = "
"; // citings contributed by [MN] if(result.startsWith(":")){ String head = ""; String tail = ""; while(result.startsWith(":")){ head = head + "
"; tail = tail + "
"; result = result.substring(1); } result = head + result + tail; } // end contrib [MN] // format headers if ((p0 = result.indexOf("====")) >= 0) { p1 = result.indexOf("====", p0 + 4); if (p1 >= 0) result = result.substring(0, p0) + "

" + result.substring(p0 + 4, p1) + "

" + result.substring(p1 + 4); } if ((p0 = result.indexOf("===")) >= 0) { p1 = result.indexOf("===", p0 + 3); if (p1 >= 0) result = result.substring(0, p0) + "

" + result.substring(p0 + 3, p1) + "

" + result.substring(p1 + 3); } if ((p0 = result.indexOf("==")) >= 0) { p1 = result.indexOf("==", p0 + 2); if (p1 >= 0) result = result.substring(0, p0) + "

" + result.substring(p0 + 2, p1) + "

" + result.substring(p1 + 2); } if ((p0 = result.indexOf("'''''")) >= 0) { p1 = result.indexOf("'''''", p0 + 5); if (p1 >= 0) result = result.substring(0, p0) + "" + result.substring(p0 + 5, p1) + "" + result.substring(p1 + 5); } if ((p0 = result.indexOf("'''")) >= 0) { p1 = result.indexOf("'''", p0 + 3); if (p1 >= 0) result = result.substring(0, p0) + "" + result.substring(p0 + 3, p1) + "" + result.substring(p1 + 3); } if ((p0 = result.indexOf("''")) >= 0) { p1 = result.indexOf("''", p0 + 2); if (p1 >= 0) result = result.substring(0, p0) + "" + result.substring(p0 + 2, p1) + "" + result.substring(p1 + 2); } //* unorderd Lists contributed by [AS] //** Sublist if(result.startsWith(ListLevel + "*")){ //more stars p0 = result.indexOf(ListLevel); p1 = result.length(); result = ""; i--; } ListLevel = ListLevel.substring(0,i); p0 = ListLevel.length(); p1 = result.length(); if(ListLevel.length() > 0){ result = tmp + "
  • " + result.substring(p0, p1) + "
  • "; }else{ result = tmp + result.substring(p0, p1); } } //# sorted Lists contributed by [AS] //## Sublist if(result.startsWith(numListLevel + "#")){ //more # p0 = result.indexOf(numListLevel); p1 = result.length(); result = "
      " + serverCore.crlfString + "
    1. " + result.substring(numListLevel.length() + 1, p1) + "
    2. "; numListLevel += "#"; }else if(numListLevel.length() > 0 && result.startsWith(numListLevel)){ //equal number of # p0 = result.indexOf(numListLevel); p1 = result.length(); result = "
    3. " + result.substring(numListLevel.length(), p1) + "
    4. "; }else if(numListLevel.length() > 0){ //less # int i = numListLevel.length(); String tmp = ""; while(! result.startsWith(numListLevel.substring(0,i)) ){ tmp += "
    "; i--; } numListLevel = numListLevel.substring(0,i); p0 = numListLevel.length(); p1 = result.length(); if(numListLevel.length() > 0){ result = tmp + "
  • " + result.substring(p0, p1) + "
  • "; }else{ result = tmp + result.substring(p0, p1); } } // end contrib [AS] //* definition Lists contributed by [MN] based on unordered list code by [AS] if(result.startsWith(defListLevel + ";")){ //more semicolons String dt = ""; String dd = ""; p0 = result.indexOf(defListLevel); p1 = result.length(); String resultCopy = result.substring(defListLevel.length() + 1, p1); if((p0 = resultCopy.indexOf(":")) > 0){ dt = resultCopy.substring(0,p0); dd = resultCopy.substring(p0+1); result = "
    " + "
    " + dt + "
    " + "
    " + dd; defList = true; } defListLevel += ";"; }else if(defListLevel.length() > 0 && result.startsWith(defListLevel)){ //equal number of semicolons String dt = ""; String dd = ""; p0 = result.indexOf(defListLevel); p1 = result.length(); String resultCopy = result.substring(defListLevel.length(), p1); if((p0 = resultCopy.indexOf(":")) > 0){ dt = resultCopy.substring(0,p0); dd = resultCopy.substring(p0+1); result = "
    " + dt + "
    " + "
    " + dd; defList = true; } }else if(defListLevel.length() > 0){ //less semicolons String dt = ""; String dd = ""; int i = defListLevel.length(); String tmp = ""; while(! result.startsWith(defListLevel.substring(0,i)) ){ tmp += "
    "; i--; } defListLevel = defListLevel.substring(0,i); p0 = defListLevel.length(); p1 = result.length(); if(defListLevel.length() > 0){ String resultCopy = result.substring(p0, p1); if((p0 = resultCopy.indexOf(":")) > 0){ dt = resultCopy.substring(0,p0); dd = resultCopy.substring(p0+1); result = tmp + "
    " + dt + "
    " + "
    " + dd; defList = true; } }else{ result = tmp + result.substring(p0, p1); } } // end contrib [MN] // create links String kl, kv, alt, align; int p; // internal links and images while ((p0 = result.indexOf("[[")) >= 0) { p1 = result.indexOf("]]", p0 + 2); if (p1 <= p0) break; kl = result.substring(p0 + 2, p1); // this is the part of the code that's responsible for images // contributed by [MN] if (kl.startsWith("Image:")) { alt = ""; align = ""; kv = ""; kl = kl.substring(6); // are there any arguments for the image? if ((p = kl.indexOf("|")) > 0) { kv = kl.substring(p + 1); kl = kl.substring(0, p); // if there are 2 arguments, write them into ALIGN and // ALT if ((p = kv.indexOf("|")) > 0) { align = " align=\"" + kv.substring(0, p) + "\""; alt = " alt=\"" + kv.substring(p + 1) + "\""; } // if there is just one, put it into ALT else alt = " alt=\"" + kv + "\""; } // replace incomplete URLs and make them point to http://peerip:port/... // with this feature you can access an image in DATA/HTDOCS/share/yacy.gif // using the wikicode [[Image:share/yacy.gif]] // or an image DATA/HTDOCS/grafics/kaskelix.jpg with [[Image:grafics/kaskelix.jpg]] // you are free to use other sub-paths of DATA/HTDOCS if (!((kl.indexOf("://"))>=0)) { kl = "http://" + yacyCore.seedDB.mySeed.getAddress().trim() + "/" + kl; } result = result.substring(0, p0) + "" + result.substring(p1 + 2); } // end contrib [MN] // if it's no image, it might be an internal link else { if ((p = kl.indexOf("|")) > 0) { kv = kl.substring(p + 1); kl = kl.substring(0, p); } else { kv = kl; } if (switchboard.wikiDB.read(kl) != null) result = result.substring(0, p0) + "" + kv + "" + result.substring(p1 + 2); else result = result.substring(0, p0) + "" + kv + "" + result.substring(p1 + 2); } } // external links while ((p0 = result.indexOf("[")) >= 0) { p1 = result.indexOf("]", p0 + 1); if (p1 <= p0) break; kl = result.substring(p0 + 1, p1); if ((p = kl.indexOf(" ")) > 0) { kv = kl.substring(p + 1); kl = kl.substring(0, p); } // No text for the link? -> http://www.url.com/ else { kv = kl; } // replace incomplete URLs and make them point to http://peerip:port/... // with this feature you can access a file at DATA/HTDOCS/share/page.html // using the wikicode [share/page.html] // or a file DATA/HTDOCS/www/page.html with [www/page.html] // you are free to use other sub-paths of DATA/HTDOCS if (!((kl.indexOf("://"))>=0)) { kl = "http://" + yacyCore.seedDB.mySeed.getAddress().trim() + "/" + kl; } result = result.substring(0, p0) + "" + kv + "" + result.substring(p1 + 1); } } //escape code ([=...=]) contributed by [MN] //both [= and =] in the same line else if(((p0 = result.indexOf("[="))>=0)&&((p1 = result.indexOf("=]"))>0)&&(!(preformatted))){ //if(p0 < p1){ String escapeText = result.substring(p0+2,p1); //BUGS TO BE FIXED: [=[=text=]=] does not work properly: //[=[= undx=]x=] should resolve as [= undx=]x, but resolves as [= undxx=] //ALSO [=[= und =]=] [= und =] leads to an exception // //handlicg cases where the text inside [= and =] also contains //[= and =]. Example: [=[=...=]=] //if(escapeText) //else{ result = transformLine(result.substring(0,p0).replaceAll("!esc!", "!esc!!")+"!esc!txt!"+result.substring(p1+2).replaceAll("!esc!", "!esc!!"), switchboard); result = result.replaceAll("!esc!txt!", escapeText); result = result.replaceAll("!esc!!", "!esc!"); //} //} } //start [= else if(((p0 = result.indexOf("[="))>=0)&&(!escapeSpan)&&(!preformatted)){ escape = true; //prevent surplus line breaks escaped = true; //prevents
     being parsed
    	    String bq = "";   //gets filled with 
    s as needed String escapeText = result.substring(p0+2); //taking care of indented lines while(result.substring(escindented,p0).startsWith(":")){ escindented++; bq = bq + "
    "; } result = transformLine(result.substring(escindented,p0).replaceAll("!esc!", "!esc!!")+"!esc!txt!", switchboard); result = bq + result.replaceAll("!esc!txt!", escapeText); escape = false; escapeSpan = true; } //end =] else if(((p0 = result.indexOf("=]"))>=0)&&(escapeSpan)&&(!preformatted)){ escapeSpan = false; String bq = ""; //gets filled with
    s as neede String escapeText = result.substring(0,p0); //taking care of indented lines while(escindented > 0){ bq = bq + "
    "; escindented--; } result = transformLine("!esc!txt!"+result.substring(p0+2).replaceAll("!esc!", "!esc!!"), switchboard); result = result.replaceAll("!esc!txt!", escapeText) + bq; escaped = false; } //end contrib [MN] //preformatted code (
    ...
    ) contributed by [MN] //implementation very similar to escape code (see above) //both
     and 
    in the same line else if(((p0 = result.indexOf("<pre>"))>=0)&&((p1 = result.indexOf("</pre>"))>0)&&(!(escaped))){ //if(p0 < p1){ String preformattedText = "
    "+result.substring(p0+11,p1)+"
    "; result = transformLine(result.substring(0,p0).replaceAll("!pre!", "!pre!!")+"!pre!txt!"+result.substring(p1+12).replaceAll("!pre!", "!pre!!"), switchboard); result = result.replaceAll("!pre!txt!", preformattedText); result = result.replaceAll("!pre!!", "!pre!"); //} } //start
    	else if(((p0 = result.indexOf("<pre>"))>=0)&&(!preformattedSpan)&&(!escaped)){
    	    preformatted = true;    //prevent surplus line breaks
    	    String bq ="";  //gets filled with 
    s as needed String preformattedText = "
    "+result.substring(p0+11);
    	    //taking care of indented lines
    	    while(result.substring(preindented,p0).startsWith(":")){
    	        preindented++;
    		bq = bq + "
    "; } result = transformLine(result.substring(preindented,p0).replaceAll("!pre!", "!pre!!")+"!pre!txt!", switchboard); result = bq + result.replaceAll("!pre!txt!", preformattedText); result = result.replaceAll("!pre!!", "!pre!"); preformattedSpan = true; } //end
    else if(((p0 = result.indexOf("</pre>"))>=0)&&(preformattedSpan)&&(!escaped)){ preformattedSpan = false; String bq = ""; //gets filled with
    s as needed String preformattedText = result.substring(0,p0)+"
    "; //taking care of indented lines while (preindented > 0){ bq = bq + ""; preindented--; } result = transformLine("!pre!txt!"+result.substring(p0+12).replaceAll("!pre!", "!pre!!"), switchboard); result = result.replaceAll("!pre!txt!", preformattedText) + bq; result = result.replaceAll("!pre!!", "!pre!"); preformatted = false; } //end contrib [MN] if ((result.endsWith(""))||(defList)||(escape)||(preformatted)) return result; return result + "
    "; } /* what we need (have): == New section == === Subsection === ==== Sub-subsection ==== link colours: existent=green, non-existent=red ---- [[wikipedia FAQ|answers]] (first element is wiki page name, second is link print name) [http://www.nupedia.com Nupedia] (external link) [http://www.nupedia.com] (un-named external link) ''Emphasize'', '''strongly''', '''''very strongly''''' (italics, bold, bold-italics) * Lists are easy to do: ** start every line with a star *** more stars means deeper levels # Numbered lists are also good ## very organized ## easy to follow ; Definition list : list of definitions ; item : the item's definition : A colon indents a line or paragraph. A manual newline starts a new paragraph. A picture: [[Image:Wiki.png]] [[Image:Wiki.png|right|jigsaw globe]] (floating right-side with caption) what we got in addition to that: [= escape characters =]
     preformatted text 
    what would be nice in addition to that: || tables */ }