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yacy_search_server/source/de/anomic/data/wikiCode.java

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// wikiCode.java
// -------------------------------------
// part of YACY
//
// (C) 2005, 2006 by Alexander Schier
// Marc Nause, Franz Brausse
//
//
// last change: $LastChangedDate: $ by $LastChangedBy: $
//
// 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]
// Franz Brausse [FB] 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 java.util.ArrayList;
import de.anomic.plasma.plasmaSwitchboard;
import de.anomic.server.serverCore;
import de.anomic.yacy.yacyCore;
/** This class provides methods to handle texts that have been posted in the yacyWiki or other
* parts of YaCy that use this class, like the blog or the profile.
*/
public class wikiCode {
private String numListLevel="";
private String ListLevel="";
private String defListLevel="";
private plasmaSwitchboard sb;
private boolean cellprocessing=false; //needed for prevention of double-execution of replaceHTML
private boolean defList = false; //needed for definition lists
private boolean escape = false; //needed for escape
private boolean escaped = false; //needed for <pre> not getting in the way
private boolean escapeSpan = false; //needed for escape symbols [= and =] spanning over several lines
private boolean newrowstart=false; //needed for the first row not to be empty
private boolean nolist = false; //needed for handling of [= and <pre> in lists
private boolean preformatted = false; //needed for preformatted text
private boolean preformattedSpan = false; //needed for <pre> and </pre> spanning over several lines
private boolean replacedHTML = false; //indicates if method replaceHTML has been used with line already
private boolean replacedCharacters = false; //indicates if method replaceCharachters has been used with line
private boolean table = false; //needed for tables, because they reach over several lines
private int preindented = 0; //needed for indented <pre>s
private int escindented = 0; //needed for indented [=s
private int headlines = 0; //number of headlines in page
private ArrayList dirElements = new ArrayList(); //list of headlines used to create diectory of page
/** Constructor of the class wikiCode */
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 directory() + new String(out);
} catch (UnsupportedEncodingException e1) {
// can not happen
return null;
}
} catch (IOException e) {
return "internal error: " + e.getMessage();
}
}
/** Replaces special characters from a string. Avoids XSS attacks and ensures correct display of
* special characters in non UTF-8 capable browsers.
* @param text a string that possibly contains HTML
* @return the string with all special characters encoded
*/
//[MN]
public static String replaceHTML(String text) {
text = replace(text, xmlentities);
text = replace(text, htmlentities);
return text;
}
/** Replaces special characters from a string. Ensures correct display of
* special characters in non UTF-8 capable browsers.
* @param text a string that possibly contains special characters
* @return the string with all special characters encoded
*/
//[MN]
public static String replaceHTMLEntities(String text) {
text = replace(text, htmlentities);
return text;
}
/** Replaces special characters from a string. Avoids XSS attacks.
* @param text a string that possibly contains HTML
* @return the string without any HTML-tags that can be used for XSS
*/
//[MN]
public static String replaceXMLEntities(String text) {
text = replace(text, xmlentities);
return text;
}
/** Replaces characters in a string with other characters defined in an array.
* @param text a string that possibly contains special characters
* @param entities array that contains characters to be replaced and characters it will be replaced by
* @return the string with all characters replaced by the corresponding character from array
*/
//[FB], changes by [MN]
public static String replace(String text, String[] entities) {
if (text==null) { return null; }
for (int x=0;x<=entities.length-1;x=x+2) {
int p=0;
while ((p=text.indexOf(entities[x],p))>=0) {
text=text.substring(0,p)+entities[x+1]+text.substring(p+entities[x].length());
p+=entities[x+1].length();
}
}
return text;
}
public static String deReplaceHTML(String text) {
text = deReplaceHTMLEntities(text);
text = deReplaceXMLEntities(text);
return text;
}
public static String deReplaceHTMLEntities(String text) {
return deReplace(text, htmlentities);
}
public static String deReplaceXMLEntities(String text) {
return deReplace(text, xmlentities);
}
public static String deReplace(String text, String[] entities) {
if (text == null) return null;
for (int i=entities.length-1; i>0; i-=2) {
int p = 0;
while ((p = text.indexOf(entities[i])) >= 0) {
text = text.substring(0, p) + entities[i - 1] + text.substring(p + entities[i].length());
p += entities[i - 1].length();
}
}
return text;
}
//This array contains codes (see http://mindprod.com/jgloss/unicode.html for details)
//that will be replaced. To add new codes or patterns, just put them at the end
//of the list. Codes or patterns in this list can not be escaped with [= or <pre>
public static String[] xmlentities={
// Ampersands _have_ to be replaced first. If they were replaced later,
// other replaced characters containing ampersands would get messed up.
"\u0026","&amp;", //ampersand
"\"","&quot;", //quotation mark
"\u003C","&lt;", //less than
"\u003E","&gt;", //greater than
};
//This array contains codes (see http://mindprod.com/jgloss/unicode.html for details) and
//patterns that will be replaced. To add new codes or patterns, just put them at the end
//of the list. Codes or patterns in this list can not be escaped with [= or <pre>
public static String[] htmlentities={
"\u005E","&#094;", // Caret
"\u0060","&#096;", // Accent Grave `
"\u007B","&#123;", // {
"\u007C","&#124;", // |
"\u007D","&#125;", // }
"\u007E","&#126;", // ~
"\u0082","&#130;",
"\u0083","&#131;",
"\u0084","&#132;",
"\u0085","&#133;",
"\u0086","&#134;",
"\u0087","&#135;",
"\u0088","&#136;",
"\u0089","&#137;",
"\u008A","&#138;",
"\u008B","&#139;",
"\u008C","&#140;",
"\u008D","&#141;",
"\u008E","&#142;",
"\u0091","&#145;",
"\u0092","&#146;",
"\u0093","&#147;",
"\u0094","&#148;",
"\u0095","&#149;",
"\u0096","&#150;",
"\u0097","&#151;",
"\u0098","&#152;",
"\u0099","&#153;",
"\u009A","&#154;",
"\u009B","&#155;",
"\u009C","&#156;",
"\u009D","&#157;",
"\u009E","&#158;",
"\u009F","&#159;",
"\u00A1","&iexcl;", //inverted (spanish) exclamation mark
"\u00A2","&cent;", //cent
"\u00A3","&pound;", //pound
"\u00A4","&curren;", //currency
"\u00A5","&yen;", //yen
"\u00A6","&brvbar;", //broken vertical bar
"\u00A7","&sect;", //section sign
"\u00A8","&uml;", //diaeresis (umlaut)
"\u00A9","&copy;", //copyright sign
"\u00AA","&ordf;", //feminine ordinal indicator
"\u00AB","&laquo;", //left-pointing double angle quotation mark
"\u00AC","&not;", //not sign
"\u00AD","&shy;", //soft hyphen
"\u00AE","&reg;", //registered sign
"\u00AF","&macr;", //macron
"\u00B0","&deg;", //degree sign
"\u00B1","&plusmn;", //plus-minus sign
"\u00B2","&sup2;", //superscript two
"\u00B3","&sup3;", //superscript three
"\u00B4","&acute;", //acute accent
"\u00B5","&micro;", //micro sign
"\u00B6","&para;", //paragraph sign
"\u00B7","&middot;", //middle dot
"\u00B8","&cedil;", //cedilla
"\u00B9","&sup1;", //superscript one
"\u00BA","&ordm;", //masculine ordinal indicator
"\u00BB","&raquo;", //right-pointing double angle quotation mark
"\u00BC","&frac14;", //fraction 1/4
"\u00BD","&frac12;", //fraction 1/2
"\u00BE","&frac34;", //fraction 3/4
"\u00BF","&iquest;", //inverted (spanisch) questionmark
"\u00C0","&Agrave;",
"\u00C1","&Aacute;",
"\u00C2","&Acirc;",
"\u00C3","&Atilde;",
"\u00C4","&Auml;",
"\u00C5","&Aring;",
"\u00C6","&AElig;",
"\u00C7","&Ccedil;",
"\u00C8","&Egrave;",
"\u00C9","&Eacute;",
"\u00CA","&Ecirc;",
"\u00CB","&Euml;",
"\u00CC","&Igrave;",
"\u00CD","&Iacute;",
"\u00CE","&Icirc;",
"\u00CF","&Iuml;",
"\u00D0","&ETH;",
"\u00D1","&Ntilde;",
"\u00D2","&Ograve;",
"\u00D3","&Oacute;",
"\u00D4","&Ocirc;",
"\u00D5","&Otilde;",
"\u00D6","&Ouml;",
"\u00D7","&times;",
"\u00D8","&Oslash;",
"\u00D9","&Ugrave;",
"\u00DA","&Uacute;",
"\u00DB","&Ucirc;",
"\u00DC","&Uuml;",
"\u00DD","&Yacute;",
"\u00DE","&THORN;",
"\u00DF","&szlig;",
"\u00E0","&agrave;",
"\u00E1","&aacute;",
"\u00E2","&acirc;",
"\u00E3","&atilde;",
"\u00E4","&auml;",
"\u00E5","&aring;",
"\u00E6","&aelig;",
"\u00E7","&ccedil;",
"\u00E8","&egrave;",
"\u00E9","&eacute;",
"\u00EA","&ecirc;",
"\u00EB","&euml;",
"\u00EC","&igrave;",
"\u00ED","&iacute;",
"\u00EE","&icirc;",
"\u00EF","&iuml;",
"\u00F0","&eth;",
"\u00F1","&ntilde;",
"\u00F2","&ograve;",
"\u00F3","&oacute;",
"\u00F4","&ocirc;",
"\u00F5","&otilde;",
"\u00F6","&ouml;",
"\u00F7","&divide;",
"\u00F8","&oslash;",
"\u00F9","&ugrave;",
"\u00FA","&uacute;",
"\u00FB","&ucirc;",
"\u00FC","&uuml;",
"\u00FD","&yacute;",
"\u00FE","&thorn;",
"\u00FF","&yuml;"
};
/** This method processes tables in the wiki code.
* @param a string that might contain parts of a table
* @return a string with wiki code of parts of table replaced by HTML code for table
*/
//[FB], changes by [MN]
private String processTable(String result, plasmaSwitchboard switchboard){
//some variables that make it easier to change codes for the table
String line = "";
String tableStart = "&#123;&#124;"; // {|
String newLine = "&#124;-"; // |-
String cellDivider = "&#124;&#124;"; // ||
String tableEnd = "&#124;&#125;"; // |}
String attribDivider = "&#124;"; // |
int lenTableStart = tableStart.length();
int lenCellDivider = cellDivider.length();
int lenTableEnd = tableEnd.length();
int lenAttribDivider = attribDivider.length();
if ((result.startsWith(tableStart)) && (!table)) {
table=true;
newrowstart=true;
line="<table";
if (result.trim().length()>lenTableStart) {
line+=parseTableProperties(result.substring(lenTableStart).trim());
}
line+=">";
result=line;
}
else if (result.startsWith(newLine) && (table)) { // new row
if (!newrowstart) {
line+="\t</tr>\n";
} else {
newrowstart=false;
}
line=line+"\t<tr>";
result=line;
}
else if ((result.startsWith(cellDivider)) && (table)) {
line+="\t\t<td";
int cellEnd=(result.indexOf(cellDivider,lenCellDivider)>0)?(result.indexOf(cellDivider,lenCellDivider)):(result.length());
int propEnd = result.indexOf(attribDivider,lenCellDivider);
int occImage = result.indexOf("[[Image:",lenCellDivider);
int occEscape = result.indexOf("[=",lenCellDivider);
//If resultOf("[[Image:") is less than propEnd, that means that there is no
//property for this cell, only an image. Without this, YaCy could get confused
//by a | in [[Image:picture.png|alt-text]] or [[Image:picture.png|alt-text]]
//Same for [= (part of [= =])
if((propEnd > lenCellDivider)
&&((occImage > propEnd)||( occImage < 0))
&&((occEscape> propEnd)||( occEscape < 0))
){
propEnd = result.indexOf(attribDivider,lenCellDivider)+lenAttribDivider;
}
else {
propEnd = cellEnd;
}
// both point at same place => new line
if (propEnd==cellEnd) {
propEnd=lenCellDivider;
}
else {
line+=parseTableProperties(result.substring(lenCellDivider,propEnd-lenAttribDivider).trim());
}
// quick&dirty fix for http://www.yacy-forum.de/viewtopic.php?t=2825 [MN]
if(propEnd > cellEnd){
propEnd = lenCellDivider;
}
table=false; cellprocessing=true;
line+=">"+processTable(result.substring(propEnd,cellEnd).trim(), switchboard)+"</td>";
table=true; cellprocessing=false;
if (cellEnd<result.length()) {
line+="\n"+processTable(result.substring(cellEnd), switchboard);
}
result=line;
}
else if (result.startsWith(tableEnd) && (table)) { // Table end
table=false;
line+="\t</tr>\n</table>"+result.substring(lenTableEnd);
result=line;
}
return result;
}
//contributed by [MN]
/** This method takes possible table properties and tests if they are valid.
* Valid in this case means if they are a property for the table, tr or td
* tag as stated in the HTML Pocket Reference by Jennifer Niederst (1st edition)
* The method is important to avoid XSS attacks on the wiki via table properties.
* @param str A string that may contain several table properties and/or junk.
* @return A string that only contains table properties.
*/
private String parseTableProperties(String str){
str = str.replaceAll("&quot;", ""); //killing all quotationmarks
String[] values = str.split("[= ]"); //splitting the string at = and blanks
str=""; //recycling... ;-)
int numberofvalues = values.length;
for(int i=0;i<numberofvalues;i++){
if((values[i].equals("rowspan")) ||
(values[i].equals("colspan")) ||
(values[i].equals("vspace")) ||
(values[i].equals("hspace")) ||
(values[i].equals("cellspacing")) ||
(values[i].equals("cellpadding")) ||
(values[i].equals("border"))){
if(i+1<numberofvalues){
if(values[i+1].matches("\\d+")){
str = str + " "+values[i]+"=\""+values[i+1]+"\"";
i++;
}
}
}
else if((values[i].equals("width"))||(values[i].equals("height"))){
if(i+1<numberofvalues){
if(values[i+1].matches("\\d+%{0,1}")){
str = str + " "+values[i]+"=\""+values[i+1]+"\"";
i++;
}
}
}
else if(values[i].equals("align")){
if(i+1<numberofvalues) {
if((values[i+1].equals("left")) ||
(values[i+1].equals("right")) ||
(values[i+1].equals("center"))) {
str = str + " "+values[i]+"=\""+values[i+1]+"\"";
i++;
}
}
}
else if(values[i].equals("valign")){
if(i+1<numberofvalues) {
if((values[i+1].equals("top")) ||
(values[i+1].equals("middle")) ||
(values[i+1].equals("bottom")) ||
(values[i+1].equals("baseline"))) {
str = str + " "+values[i]+"=\""+values[i+1]+"\"";
i++;
}
}
}
else if(values[i].equals("bgcolor")){
if(i+1<numberofvalues){
if(values[i+1].matches("#{0,1}[0-9a-fA-F]{1,6}|[a-zA-Z]{3,}")){
str = str + " "+values[i]+"=\""+values[i+1]+"\"";
i++;
}
}
}
else if(values[i].equals("rules")){
if(i+1<numberofvalues) {
if((values[i+1].equals("none")) ||
(values[i+1].equals("groups")) ||
(values[i+1].equals("rows")) ||
(values[i+1].equals("cols")) ||
(values[i+1].equals("all"))) {
str = str + " "+values[i]+"=\""+values[i+1]+"\"";
i++;
}
}
}
else if(values[i].equals("frame")){
if(i+1<numberofvalues) {
if((values[i+1].equals("void")) ||
(values[i+1].equals("above")) ||
(values[i+1].equals("below")) ||
(values[i+1].equals("hsides")) ||
(values[i+1].equals("lhs")) ||
(values[i+1].equals("rhs")) ||
(values[i+1].equals("vsides")) ||
(values[i+1].equals("box")) ||
(values[i+1].equals("border"))) {
str = str + " "+values[i]+"=\""+values[i+1]+"\"";
i++;
}
}
}
else if(values[i].equals("summary")){
if(i+1<numberofvalues){
str = str + " "+values[i]+"=\""+values[i+1]+"\"";
i++;
}
}
else if(values[i].equals("nowrap")){
str = str + " nowrap";
}
}
return str;
} //end contrib [MN]
/** This method processes ordered lists.
*/
private String orderedList(String result){
if(!nolist){ //lists only get processed if not forbidden (see code for [= and <pre>). [MN]
int p0 = 0;
int p1 = 0;
//# sorted Lists contributed by [AS]
//## Sublist
if(result.startsWith(numListLevel + "#")){ //more #
p0 = result.indexOf(numListLevel);
p1 = result.length();
result = "<ol>" + serverCore.crlfString +
"<li>" +
result.substring(numListLevel.length() + 1, p1) +
"</li>";
numListLevel += "#";
}else if(numListLevel.length() > 0 && result.startsWith(numListLevel)){ //equal number of #
p0 = result.indexOf(numListLevel);
p1 = result.length();
result = "<li>" +
result.substring(numListLevel.length(), p1) +
"</li>";
}else if(numListLevel.length() > 0){ //less #
int i = numListLevel.length();
String tmp = "";
while(! result.startsWith(numListLevel.substring(0,i)) ){
tmp += "</ol>";
i--;
}
numListLevel = numListLevel.substring(0,i);
p0 = numListLevel.length();
p1 = result.length();
if(numListLevel.length() > 0){
result = tmp +
"<li>" +
result.substring(p0, p1) +
"</li>";
}else{
result = tmp + result.substring(p0, p1);
}
}
// end contrib [AS]
}
return result;
}
/** This method processes unordered lists.
*/
//contributed by [AS] put into it's own method by [MN]
private String unorderedList(String result){
if(!nolist){ //lists only get processed if not forbidden (see code for [= and <pre>). [MN]
int p0 = 0;
int p1 = 0;
//contributed by [AS]
if(result.startsWith(ListLevel + "*")){ //more stars
p0 = result.indexOf(ListLevel);
p1 = result.length();
result = "<ul>" + serverCore.crlfString +
"<li>" +
result.substring(ListLevel.length() + 1, p1) +
"</li>";
ListLevel += "*";
}else if(ListLevel.length() > 0 && result.startsWith(ListLevel)){ //equal number of stars
p0 = result.indexOf(ListLevel);
p1 = result.length();
result = "<li>" +
result.substring(ListLevel.length(), p1) +
"</li>";
}else if(ListLevel.length() > 0){ //less stars
int i = ListLevel.length();
String tmp = "";
while(! result.startsWith(ListLevel.substring(0,i))){
tmp += "</ul>";
i--;
}
ListLevel = ListLevel.substring(0,i);
p0 = ListLevel.length();
p1 = result.length();
if(ListLevel.length() > 0){
result = tmp +
"<li>" +
result.substring(p0, p1) +
"</li>";
}else{
result = tmp + result.substring(p0, p1);
}
}
//end contrib [AS]
}
return result;
}
/** This method processes definition lists.
*/
//contributed by [MN] based on unordered list code by [AS]
private String definitionList(String result){
if(!nolist){ //lists only get processed if not forbidden (see code for [= and <pre>). [MN]
int p0 = 0;
int p1 = 0;
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 = "<dl>" + "<dt>" + dt + "</dt>" + "<dd>" + 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>" + dt + "</dt>" + "<dd>" + 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 += "</dd></dl>";
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>" + dt + "</dt>" + "<dd>" + dd;
defList = true;
}
}else{
result = tmp + result.substring(p0, p1);
}
}
}
return result;
}
/** This method processes links and images.
*/
//contributed by [AS] except where stated otherwise
private String linksAndImages(String result, plasmaSwitchboard switchboard){
// create links
String kl, kv, alt, align;
int p;
int p0 = 0;
int p1 = 0;
// 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("&#124;")) > 0) {
kv = kl.substring(p + 6);
kl = kl.substring(0, p);
// if there are 2 arguments, write them into ALIGN and ALT
if ((p = kv.indexOf("&#124;")) > 0) {
align = kv.substring(0, p);
//checking validity of value for align. Only non browser specific
//values get supported. Not supported: absmiddle, baseline, texttop
if ((align.equals("bottom"))||
(align.equals("center"))||
(align.equals("left"))||
(align.equals("middle"))||
(align.equals("right"))||
(align.equals("top")))
{
align = " align=\"" + align + "\"";
}
else align = "";
alt = " alt=\"" + kv.substring(p + 6) + "\"";
}
// 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("://")<1) {
kl = "http://" + yacyCore.seedDB.mySeed.getAddress().trim() + "/" + kl;
}
result = result.substring(0, p0) + "<img src=\"" + kl + "\"" + align + alt + ">" + result.substring(p1 + 2);
}
// end contrib [MN]
// if it's no image, it might be an internal link
else {
if ((p = kl.indexOf("&#124;")) > 0) {
kv = kl.substring(p + 6);
kl = kl.substring(0, p);
} else {
kv = kl;
}
if (switchboard.wikiDB.read(kl) != null)
result = result.substring(0, p0) + "<a class=\"known\" href=\"Wiki.html?page=" + kl + "\">" + kv + "</a>" + result.substring(p1 + 2);
else
result = result.substring(0, p0) + "<a class=\"unknown\" href=\"Wiki.html?page=" + kl + "&edit=Edit\">" + kv + "</a>" + 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? -> <a href="http://www.url.com/">http://www.url.com/</a>
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("://")<1) {
kl = "http://" + yacyCore.seedDB.mySeed.getAddress().trim() + "/" + kl;
}
result = result.substring(0, p0) + "<a class=\"extern\" href=\"" + kl + "\">" + kv + "</a>" + result.substring(p1 + 1);
}
return result;
}
/** This method handles the escape tags [= =] */
//contributed by [MN]
private String escapeTag(String result, plasmaSwitchboard switchboard){
int p0 = 0;
int p1 = 0;
//both [= and =] in the same line
if(((p0 = result.indexOf("[="))>=0)&&((p1 = result.indexOf("=]"))>0)&&(!(preformatted))){
if(p0<p1){
String escapeText = result.substring(p0+2,p1);
escapeText = escapeText.replaceAll("!esc!", "!esc!!");
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!");
}
//handles cases like [=[= =]=] [= =] that would cause an exception otherwise
else{
escape = true;
String temp1 = transformLine(result.substring(0,p0-1).replaceAll("!tmp!","!tmp!!")+"!tmp!txt!", switchboard);
nolist = true;
String temp2 = transformLine(result.substring(p0), switchboard);
nolist = false;
result = temp1.replaceAll("!tmp!txt!",temp2);
result = result.replaceAll("!tmp!!", "!tmp!");
escape = false;
}
}
//start [=
else if(((p0 = result.indexOf("[="))>=0)&&(!escapeSpan)&&(!preformatted)){
escape = true; //prevent surplus line breaks
escaped = true; //prevents <pre> being parsed
String bq = ""; //gets filled with <blockquote>s as needed
String escapeText = result.substring(p0+2);
escapeText = escapeText.replaceAll("!esc!", "!esc!!");
//taking care of indented lines
while(result.substring(escindented,p0).startsWith(":")){
escindented++;
bq = bq + "<blockquote>";
}
result = transformLine(result.substring(escindented,p0).replaceAll("!esc!", "!esc!!")+"!esc!txt!", switchboard);
result = bq + result.replaceAll("!esc!txt!", escapeText);
result = result.replaceAll("!esc!!", "!esc!");
escape = false;
escapeSpan = true;
}
//end =]
else if(((p0 = result.indexOf("=]"))>=0)&&(escapeSpan)&&(!preformatted)){
escapeSpan = false;
String bq = ""; //gets filled with </blockquote>s as needed
String escapeText = result.substring(0,p0);
escapeText = escapeText.replaceAll("!esc!", "!esc!!");
//taking care of indented lines
while(escindented > 0){
bq = bq + "</blockquote>";
escindented--;
}
result = transformLine("!esc!txt!"+result.substring(p0+2).replaceAll("!esc!", "!esc!!"), switchboard);
result = result.replaceAll("!esc!txt!", escapeText) + bq;
result = result.replaceAll("!esc!!", "!esc!");
escaped = false;
}
//Getting rid of surplus =]
else if (((p0 = result.indexOf("=]"))>=0)&&(!escapeSpan)&&(!preformatted)){
while((p0 = result.indexOf("=]"))>=0){
result = result.substring(0,p0)+result.substring(p0+2);
}
result = transformLine(result, switchboard);
}
return result;
}
/** This method handles the preformatted tags <pre> </pre> */
//contributed by [MN]
private String preformattedTag(String result, plasmaSwitchboard switchboard){
int p0 = 0;
int p1 = 0;
//implementation very similar to escape code (see above)
//both <pre> and </pre> in the same line
if(((p0=result.indexOf("&lt;pre&gt;"))>=0)&&((p1=result.indexOf("&lt;/pre&gt;"))>0)&&(!(escaped))){
if(p0<p1){
String preformattedText = "<pre style=\"border:dotted;border-width:thin\">"+result.substring(p0+11,p1)+"</pre>";
preformattedText = preformattedText.replaceAll("!pre!", "!pre!!");
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!");
}
//handles cases like <pre><pre> </pre></pre> <pre> </pre> that would cause an exception otherwise
else{
preformatted = true;
String temp1 = transformLine(result.substring(0,p0-1).replaceAll("!tmp!","!tmp!!")+"!tmp!txt!", switchboard);
nolist = true;
String temp2 = transformLine(result.substring(p0), switchboard);
nolist = false;
result = temp1.replaceAll("!tmp!txt!",temp2);
result = result.replaceAll("!tmp!!", "!tmp!");
preformatted = false;
}
}
//start <pre>
else if(((p0 = result.indexOf("&lt;pre&gt;"))>=0)&&(!preformattedSpan)&&(!escaped)){
preformatted = true; //prevent surplus line breaks
String bq =""; //gets filled with <blockquote>s as needed
String preformattedText = "<pre style=\"border:dotted;border-width:thin\">"+result.substring(p0+11);
preformattedText = preformattedText.replaceAll("!pre!", "!pre!!");
//taking care of indented lines
while(result.substring(preindented,p0).startsWith(":")){
preindented++;
bq = bq + "<blockquote>";
}
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 </pre>
else if(((p0 = result.indexOf("&lt;/pre&gt;"))>=0)&&(preformattedSpan)&&(!escaped)){
preformattedSpan = false;
String bq = ""; //gets filled with </blockquote>s as needed
String preformattedText = result.substring(0,p0)+"</pre>";
preformattedText = preformattedText.replaceAll("!pre!", "!pre!!");
//taking care of indented lines
while (preindented > 0){
bq = bq + "</blockquote>";
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;
}
//Getting rid of surplus </pre>
else if (((p0 = result.indexOf("&lt;/pre&gt;"))>=0)&&(!preformattedSpan)&&(!escaped)){
while((p0 = result.indexOf("&lt;/pre&gt;"))>=0){
result = result.substring(0,p0)+result.substring(p0+12);
}
result = transformLine(result, switchboard);
}
return result;
}
/** This method creates a directory for a wiki page.
* @return directory of the wiki
*/
//method contributed by [MN]
private String directory(){
String directory = "";
String element;
int s = 0;
int level = 1;
int level1 = 0;
int level2 = 0;
int level3 = 0;
int doubles = 0;
String anchorext = "";
if((s=dirElements.size())>2){
for(int i=0;i<s;i++){
element = dirElements.get(i).toString();
//counting double headlines
doubles = 0;
for(int j=0;j<i;j++){
if(dirElements.get(j).toString().substring(1).replaceAll(" ","_").replaceAll("[^a-zA-Z0-9_]","").equals(element.substring(1).replaceAll(" ","_").replaceAll("[^a-zA-Z0-9_]",""))){
doubles++;
}
}
//if there are doubles, create anchorextension
if(doubles>0){
anchorext = "_" + (doubles+1);
}
if (element.startsWith("3")){
if(level<3){
level = 3;
level3 = 0;
}
level3++;
String temp = element.substring(1);
element=level1+"."+level2+"."+level3+" "+temp;
directory = directory + "&nbsp;&nbsp;&nbsp;&nbsp;<a href=\"#"+temp.replaceAll(" ","_").replaceAll("[^a-zA-Z0-9_]","")+anchorext+"\" class=\"WikiTOC\">"+element+"</a><br />\n";
}
else if (element.startsWith("2")){
if(level==1){
level2 = 0;
level = 2;
}
if(level==3){
level = 2;
}
level2++;
String temp = element.substring(1);
element=level1+"."+level2+" "+temp;
directory = directory + "&nbsp;&nbsp;<a href=\"#"+temp.replaceAll(" ","_").replaceAll("[^a-zA-Z0-9_]","")+anchorext+"\" class=\"WikiTOC\">"+element+"</a><br />\n";
}
else if (element.startsWith("1")) {
if (level>1) {
level = 1;
level2 = 0;
level3 = 0;
}
level1++;
String temp = element.substring(1);
element=level1+". "+temp;
directory = directory + "<a href=\"#"+temp.replaceAll(" ","_").replaceAll("[^a-zA-Z0-9_]","")+anchorext+"\" class=\"WikiTOC\">"+element+"</a><br />\n";
}
anchorext="";
}
directory = "<table><tr><td><div class=\"WikiTOCBox\">\n" + directory + "</div></td></tr></table>\n";
}
return directory;
}
/** Replaces two occurences of a substring in a string by a pair of strings if
* that substring occurs twice in the string. This method is not greedy! You'll
* have to run it in a loop if you want to replace all occurences of the substring.
* This method provides special treatment for headlines.
* @param input the string that something is to be replaced in
* @param pat substring to be replaced
* @param repl1 string substring gets replaced by on uneven occurences
* @param repl2 string substring gets replaced by on even occurences
*/
//[MN]
private String pairReplace(String input, String pat, String repl1, String repl2){
String direlem = ""; //string to keep headlines until they get added to List dirElements
int p0 = 0;
int p1 = 0;
int l = pat.length();
//replace pattern if a pair of the pattern can be found in the line
if( ((p0 = input.indexOf(pat)) >= 0) && ((p1 = input.indexOf(pat, p0 + l)) >= 0) ) {
//extra treatment for headlines
if((pat.equals("===="))||(pat.equals("==="))||(pat.equals("=="))){
//add anchor and create headline
direlem = input.substring(p0 + l, p1);
//counting double headlines
int doubles = 0;
for(int i=0;i<headlines;i++){
if(dirElements.get(i).toString().substring(1).equals(direlem)){
doubles++;
}
}
String anchor = direlem.replaceAll(" ","_").replaceAll("[^a-zA-Z0-9_]",""); //replace blanks with underscores and delete everything thats not a regular character, a number or _
//if there are doubles, add underscore and number of doubles plus one
if(doubles>0){
anchor = anchor + "_" + (doubles+1);
}
input = input.substring(0, p0) + "<a name=\""+anchor+"\"></a>" + repl1 +
direlem + repl2 + input.substring(p1 + l);
//add headlines to list of headlines (so TOC can be created)
if(pat.equals("====")) dirElements.add("3"+direlem);
else if(pat.equals("===")) dirElements.add("2"+direlem);
else if(pat.equals("==")) dirElements.add("1"+direlem);
headlines++;
}
else{
input = input.substring(0, p0) + repl1 +
(direlem = input.substring(p0 + l, p1)) + repl2 +
input.substring(p1 + l);
}
}
//recursion if a pair of the pattern can still be found in the line
if( ((p0 = input.indexOf(pat)) >= 0) && (input.indexOf(pat,p0 + l) >= 0) ){
input = pairReplace(input, pat, repl1, repl2);
}
return input;
}
/** Replaces wiki tags with HTML tags.
* @param result a line of text
* @param switchboard
* @return the line of text with HTML tags instead of wiki tags
*/
public String transformLine(String result, plasmaSwitchboard switchboard) {
//If HTML has not bee replaced yet (can happen if method gets called in recursion), replace now!
if (!replacedHTML || preformattedSpan){
result = replaceXMLEntities(result);
replacedHTML = true;
}
//If special characters have not bee replaced yet, replace now!
if (!replacedCharacters || preformattedSpan){
result = replaceHTMLEntities(result);
replacedCharacters = true;
}
//check if line contains escape symbols([= =]) or if we are in an escape sequence already.
if ((result.indexOf("[=")>=0)||(result.indexOf("=]")>=0)||(escapeSpan)){
result = escapeTag(result, switchboard);
}
//check if line contains preformatted symbols or if we are in a preformatted sequence already.
else if ((result.indexOf("&lt;pre&gt;")>=0)||(result.indexOf("&lt;/pre&gt;")>=0)||(preformattedSpan)){
result = preformattedTag(result, switchboard);
}
//transform page as usual
else {
//tables first -> wiki-tags in cells can be treated after that
result = processTable(result, switchboard);
// format lines
if (result.startsWith(" ")) result = "<tt>" + result.substring(1) + "</tt>";
if (result.startsWith("----")) result = "<hr />";
// citings contributed by [MN]
if(result.startsWith(":")){
String head = "";
String tail = "";
while(result.startsWith(":")){
head = head + "<blockquote>";
tail = tail + "</blockquote>";
result = result.substring(1);
}
result = head + result + tail;
}
// end contrib [MN]
// format headers
result = pairReplace(result,"====","<h4>","</h4>");
result = pairReplace(result,"===","<h3>","</h3>");
result = pairReplace(result,"==","<h2>","</h2>");
result = pairReplace(result,"'''''","<b><i>","</i></b>");
result = pairReplace(result,"'''","<b>","</b>");
result = pairReplace(result,"''","<i>","</i>");
result = unorderedList(result);
result = orderedList(result);
result = definitionList(result);
result = linksAndImages(result, switchboard);
}
if (!preformatted) replacedHTML = false;
replacedCharacters = false;
if ((result.endsWith("</li>"))||(defList)||(escape)||(preformatted)||(table)||(cellprocessing)) return result;
return result + "<br />";
}
}
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