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761 lines
35 KiB
761 lines
35 KiB
// wikiCode.java
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// -------------------------------------
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// part of YACY
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//
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// (C) 2005, 2006 by Alexander Schier, Marc Nause, Franz Brausze
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package de.anomic.data.wiki;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import net.yacy.document.parser.html.CharacterCoding;
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import de.anomic.server.serverCore;
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/** This class provides methods to handle texts that have been posted in the yacyWiki or other
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* parts of YaCy that use this class, like the blog or the profile.
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*
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* @author Alexander Schier [AS], Franz Brausze [FB], Marc Nause [MN]
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*/
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public class wikiCode extends abstractWikiParser implements wikiParser {
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/* Table properties */
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private static final String[] tps = {"rowspan", "colspan", "vspace", "hspace", "cellspacing", "cellpadding", "border"};
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private static final Map<String, String[]> ps = new HashMap<String, String[]>();
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/* possible tags for headlines */
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private static final String[] headlineTags = new String[]{"====", "===", "=="};
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static {
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/* Arrays must be sorted since Array.searchBinary() is used later. For more info see:
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* http://java.sun.com/javase/6/docs/api/java/util/Arrays.html#binarySearch(T[], T, java.util.Comparator)
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*/
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Arrays.sort(headlineTags);
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Arrays.sort(tps);
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String[] array;
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Arrays.sort(array = new String[]{"void", "above", "below", "hsides", "lhs", "rhs", "vsides", "box", "border"});
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ps.put("frame", array);
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Arrays.sort(array = new String[]{"none", "groups", "rows", "cols", "all"});
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ps.put("rules", array);
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Arrays.sort(array = new String[]{"top", "middle", "bottom", "baseline"});
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ps.put("valign", array);
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Arrays.sort(array = new String[]{"left", "right", "center"});
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ps.put("align", array);
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}
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private String numListLevel = "";
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private String ListLevel = "";
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private String defListLevel = "";
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private boolean cellprocessing = false; //needed for prevention of double-execution of replaceHTML
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private boolean defList = false; //needed for definition lists
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private boolean escape = false; //needed for escape
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private boolean escaped = false; //needed for <pre> not getting in the way
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private boolean newrowstart = false; //needed for the first row not to be empty
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private boolean nolist = false; //needed for handling of [= and <pre> in lists
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private boolean preformatted = false; //needed for preformatted text
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private boolean preformattedSpan = false; //needed for <pre> and </pre> spanning over several lines
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private boolean replacedHTML = false; //indicates if method replaceHTML has been used with line already
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private boolean table = false; //needed for tables, because they reach over several lines
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private int preindented = 0; //needed for indented <pre>s
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private final List<String> dirElements = new ArrayList<String>(); //list of headlines used to create diectory of page
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/** Constructor of the class wikiCode */
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public wikiCode(String address) {
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super(address);
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}
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protected String transform(
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final BufferedReader reader,
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final int length) throws IOException {
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final StringBuilder out = new StringBuilder(length);
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String line;
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while ((line = reader.readLine()) != null) {
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out.append(transformLine(line)).append(serverCore.CRLF_STRING);
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}
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return out.insert(0, directory()).toString();
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}
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/**
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* Processes tables in the wiki code.
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* @param input String which might or might not contain parts of a table.
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* @return String with wiki code of parts of table replaced by HTML code for table.
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*/
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//[FB], changes by [MN]
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private String processTable(final String input) {
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//some variables that make it easier to change codes for the table
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String line = "";
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final String tableStart = "{|"; // {|
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final String newLine = "|-"; // |-
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final String cellDivider = "||"; // ||
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final String tableEnd = "|}"; // |}
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final String attribDivider = "|"; // |
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final int lenTableStart = tableStart.length();
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final int lenCellDivider = cellDivider.length();
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final int lenTableEnd = tableEnd.length();
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final int lenAttribDivider = attribDivider.length();
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if ((input.startsWith(tableStart)) && (!table)) {
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table = true;
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newrowstart = true;
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line = "<table";
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if (input.trim().length() > lenTableStart) {
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line += parseTableProperties(input.substring(lenTableStart).trim()).toString();
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}
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line += ">";
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} else if (input.startsWith(newLine) && (table)) { // new row
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if (!newrowstart) {
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line += "\t</tr>\n";
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} else {
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newrowstart = false;
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}
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line = line + "\t<tr>";
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} else if ((input.startsWith(cellDivider)) && (table)) {
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line += "\t\t<td";
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final int cellEnd = (input.indexOf(cellDivider, lenCellDivider) > 0) ? (input.indexOf(cellDivider, lenCellDivider)) : (input.length());
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int propEnd = input.indexOf(attribDivider, lenCellDivider);
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final int occImage = input.indexOf("[[Image:", lenCellDivider);
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final int occEscape = input.indexOf("[=", lenCellDivider);
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//If resultOf("[[Image:") is less than propEnd, that means that there is no
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//property for this cell, only an image. Without this, YaCy could get confused
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//by a | in [[Image:picture.png|alt-text]] or [[Image:picture.png|alt-text]]
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//Same for [= (part of [= =])
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if ((propEnd > lenCellDivider) && ((occImage > propEnd) || (occImage < 0)) && ((occEscape > propEnd) || (occEscape < 0))) {
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propEnd = input.indexOf(attribDivider, lenCellDivider) + lenAttribDivider;
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} else {
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propEnd = cellEnd;
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}
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// both point at same place => new line
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if (propEnd == cellEnd) {
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propEnd = lenCellDivider;
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} else {
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line += parseTableProperties(input.substring(lenCellDivider, propEnd - lenAttribDivider).trim()).toString();
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}
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// quick&dirty fix [MN]
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if (propEnd > cellEnd) {
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propEnd = lenCellDivider;
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}
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table = false;
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cellprocessing = true;
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line += ">" + processTable(input.substring(propEnd, cellEnd).trim()) + "</td>";
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table = true;
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cellprocessing = false;
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if (cellEnd < input.length()) {
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line += "\n" + processTable(input.substring(cellEnd));
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}
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} else if (input.startsWith(tableEnd) && (table)) { // Table end
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table = false;
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line += "\t</tr>\n</table>" + input.substring(lenTableEnd);
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} else {
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line = input;
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}
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return line;
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}
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// contributed by [MN], changes by [FB]
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/** This method takes possible table properties and tests if they are valid.
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* Valid in this case means if they are a property for the table, tr or td
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* tag as stated in the HTML Pocket Reference by Jennifer Niederst (1st edition)
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* The method is important to avoid XSS attacks on the wiki via table properties.
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* @param properties A string that may contain several table properties and/or junk.
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* @return A string that only contains table properties.
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*/
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private StringBuilder parseTableProperties(final String properties) {
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final String[] values = properties.replaceAll(""", "").split("[= ]"); //splitting the string at = and blanks
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final StringBuilder sb = new StringBuilder(properties.length());
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String key, value;
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String[] posVals;
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final int numberofvalues = values.length;
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for (int i = 0; i < numberofvalues; i++) {
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key = values[i].trim();
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if (key.equals("nowrap")) {
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addPair("nowrap", "nowrap", sb);
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} else if (i + 1 < numberofvalues) {
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value = values[++i].trim();
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if ((key.equals("summary")) ||
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(key.equals("bgcolor") && value.matches("#{0,1}[0-9a-fA-F]{1,6}|[a-zA-Z]{3,}")) ||
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((key.equals("width") || key.equals("height")) && value.matches("\\d+%{0,1}")) ||
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((posVals = ps.get(key)) != null && Arrays.binarySearch(posVals, value) >= 0) ||
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(Arrays.binarySearch(tps, key) >= 0 && value.matches("\\d+"))) {
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addPair(key, value, sb);
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}
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}
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}
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return sb;
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}
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private StringBuilder addPair(final String key, final String value, final StringBuilder sb) {
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return sb.append(" ").append(key).append("=\"").append(value).append("\"");
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}
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/** This method processes ordered lists.
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*/
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private String orderedList(String result) {
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if (!nolist) { //lists only get processed if not forbidden (see code for [= and <pre>). [MN]
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int p0 = 0;
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int p1 = 0;
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//# sorted Lists contributed by [AS]
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//## Sublist
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if (result.startsWith(numListLevel + "#")) { //more #
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p0 = result.indexOf(numListLevel);
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p1 = result.length();
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result = "<ol>" + serverCore.CRLF_STRING +
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"<li>" +
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result.substring(numListLevel.length() + 1, p1) +
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"</li>";
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numListLevel += "#";
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} else if (numListLevel.length() > 0 && result.startsWith(numListLevel)) { //equal number of #
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p0 = result.indexOf(numListLevel);
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p1 = result.length();
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result = "<li>" +
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result.substring(numListLevel.length(), p1) +
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"</li>";
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} else if (numListLevel.length() > 0) { //less #
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int i = numListLevel.length();
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String tmp = "";
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while (!result.startsWith(numListLevel.substring(0, i))) {
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tmp += "</ol>";
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i--;
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}
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numListLevel = numListLevel.substring(0, i);
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p0 = numListLevel.length();
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p1 = result.length();
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if (numListLevel.length() > 0) {
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result = tmp +
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"<li>" +
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result.substring(p0, p1) +
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"</li>";
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} else {
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result = tmp + result.substring(p0, p1);
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}
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}
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// end contrib [AS]
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}
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return result;
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}
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/** This method processes unordered lists.
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*/
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//contributed by [AS] put into it's own method by [MN]
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private String unorderedList(String result) {
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if (!nolist) { //lists only get processed if not forbidden (see code for [= and <pre>). [MN]
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int p0 = 0;
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int p1 = 0;
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//contributed by [AS]
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if (result.startsWith(ListLevel + "*")) { //more stars
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p0 = result.indexOf(ListLevel);
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p1 = result.length();
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result = "<ul>" + serverCore.CRLF_STRING +
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"<li>" +
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result.substring(ListLevel.length() + 1, p1) +
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"</li>";
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ListLevel += "*";
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} else if (ListLevel.length() > 0 && result.startsWith(ListLevel)) { //equal number of stars
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p0 = result.indexOf(ListLevel);
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p1 = result.length();
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result = "<li>" +
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result.substring(ListLevel.length(), p1) +
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"</li>";
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} else if (ListLevel.length() > 0) { //less stars
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int i = ListLevel.length();
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String tmp = "";
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while (ListLevel.length() >= i && !result.startsWith(ListLevel.substring(0, i))) {
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tmp += "</ul>";
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i--;
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}
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p0 = ListLevel.length();
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if (i < p0) {
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ListLevel = ListLevel.substring(0, i);
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p0 = ListLevel.length();
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}
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p1 = result.length();
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if (ListLevel.length() > 0) {
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result = tmp +
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"<li>" +
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result.substring(p0, p1) +
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"</li>";
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} else {
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result = tmp + result.substring(p0, p1);
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}
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}
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//end contrib [AS]
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}
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return result;
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}
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/** This method processes definition lists.
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*/
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//contributed by [MN] based on unordered list code by [AS]
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private String definitionList(String result) {
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if (!nolist) { //lists only get processed if not forbidden (see code for [= and <pre>). [MN]
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int p0 = 0;
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int p1 = 0;
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if (result.startsWith(defListLevel + ";")) { //more semicolons
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String dt = "";
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String dd = "";
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p0 = result.indexOf(defListLevel);
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p1 = result.length();
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final String resultCopy = result.substring(defListLevel.length() + 1, p1);
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if ((p0 = resultCopy.indexOf(":")) > 0) {
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dt = resultCopy.substring(0, p0);
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dd = resultCopy.substring(p0 + 1);
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result = "<dl>" + "<dt>" + dt + "</dt>" + "<dd>" + dd;
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defList = true;
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}
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defListLevel += ";";
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} else if (defListLevel.length() > 0 && result.startsWith(defListLevel)) { //equal number of semicolons
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String dt = "";
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String dd = "";
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p0 = result.indexOf(defListLevel);
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p1 = result.length();
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final String resultCopy = result.substring(defListLevel.length(), p1);
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if ((p0 = resultCopy.indexOf(":")) > 0) {
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dt = resultCopy.substring(0, p0);
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dd = resultCopy.substring(p0 + 1);
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result = "<dt>" + dt + "</dt>" + "<dd>" + dd;
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defList = true;
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}
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} else if (defListLevel.length() > 0) { //less semicolons
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String dt = "";
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String dd = "";
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int i = defListLevel.length();
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String tmp = "";
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while (!result.startsWith(defListLevel.substring(0, i))) {
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tmp += "</dd></dl>";
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i--;
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}
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defListLevel = defListLevel.substring(0, i);
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p0 = defListLevel.length();
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p1 = result.length();
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if (defListLevel.length() > 0) {
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final String resultCopy = result.substring(p0, p1);
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if ((p0 = resultCopy.indexOf(":")) > 0) {
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dt = resultCopy.substring(0, p0);
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dd = resultCopy.substring(p0 + 1);
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result = tmp + "<dt>" + dt + "</dt>" + "<dd>" + dd;
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defList = true;
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}
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} else {
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result = tmp + result.substring(p0, p1);
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}
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}
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}
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return result;
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}
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/** This method processes links and images.
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*/
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//contributed by [AS] except where stated otherwise
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private String linksAndImages(String result) {
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// create links
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String kl, kv, alt, align;
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int p;
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int p0 = 0;
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int p1 = 0;
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// internal links and images
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while ((p0 = result.indexOf("[[")) >= 0) {
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p1 = result.indexOf("]]", p0 + 2);
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if (p1 <= p0) {
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break;
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}
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kl = result.substring(p0 + 2, p1);
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// this is the part of the code that's responsible for images
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// contributed by [MN]
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if (kl.startsWith("Image:")) {
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alt = "";
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align = "";
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kv = "";
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kl = kl.substring(6);
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// are there any arguments for the image?
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if ((p = kl.indexOf("|")) > 0) {
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kv = kl.substring(p + 6);
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kl = kl.substring(0, p);
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// if there are 2 arguments, write them into ALIGN and ALT
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if ((p = kv.indexOf("|")) > 0) {
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align = kv.substring(0, p);
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//checking validity of value for align. Only non browser specific
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//values get supported. Not supported: absmiddle, baseline, texttop
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if ((align.equals("bottom")) ||
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(align.equals("center")) ||
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(align.equals("left")) ||
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(align.equals("middle")) ||
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(align.equals("right")) ||
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(align.equals("top"))) {
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align = " align=\"" + align + "\"";
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} else {
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align = "";
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}
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alt = " alt=\"" + kv.substring(p + 6) + "\"";
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} // if there is just one, put it into ALT
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else {
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alt = " alt=\"" + kv + "\"";
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}
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}
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// replace incomplete URLs and make them point to http://peerip:port/...
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// with this feature you can access an image in DATA/HTDOCS/share/yacy.gif
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// using the wikicode [[Image:share/yacy.gif]]
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// or an image DATA/HTDOCS/grafics/kaskelix.jpg with [[Image:grafics/kaskelix.jpg]]
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// you are free to use other sub-paths of DATA/HTDOCS
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if (kl.indexOf("://") < 1) {
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kl = "http://" + super.address + "/" + kl;
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}
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result = result.substring(0, p0) + "<img src=\"" + kl + "\"" + align + alt + ">" + result.substring(p1 + 2);
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} // end contrib [MN]
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// if it's no image, it might be an internal link
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else {
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if ((p = kl.indexOf("|")) > 0) {
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kv = kl.substring(p + 6);
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kl = kl.substring(0, p);
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} else {
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kv = kl;
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}
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result = result.substring(0, p0) + "<a class=\"known\" href=\"Wiki.html?page=" + kl + "\">" + kv + "</a>" + result.substring(p1 + 2); // oob exception in append() !
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}
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}
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// external links
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while ((p0 = result.indexOf("[")) >= 0) {
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p1 = result.indexOf("]", p0 + 1);
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if (p1 <= p0) {
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break;
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}
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kl = result.substring(p0 + 1, p1);
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if ((p = kl.indexOf(" ")) > 0) {
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kv = kl.substring(p + 1);
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kl = kl.substring(0, p);
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} // No text for the link? -> <a href="http://www.url.com/">http://www.url.com/</a>
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else {
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kv = kl;
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}
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// replace incomplete URLs and make them point to http://peerip:port/...
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// with this feature you can access a file at DATA/HTDOCS/share/page.html
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// using the wikicode [share/page.html]
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// 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://" + super.address + "/" + kl;
|
|
}
|
|
result = result.substring(0, p0) + "<a class=\"extern\" href=\"" + kl + "\">" + kv + "</a>" + result.substring(p1 + 1);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/** This method handles the preformatted tags <pre> </pre> */
|
|
//contributed by [MN]
|
|
private String preformattedTag(String result) {
|
|
int p0 = 0;
|
|
int p1 = 0;
|
|
//both <pre> and </pre> in the same line
|
|
if (((p0 = result.indexOf("<pre>")) >= 0) && ((p1 = result.indexOf("</pre>")) > 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!!"));
|
|
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;
|
|
final String temp1 = transformLine(result.substring(0, p0 - 1).replaceAll("!tmp!", "!tmp!!") + "!tmp!txt!");
|
|
nolist = true;
|
|
final String temp2 = transformLine(result.substring(p0));
|
|
nolist = false;
|
|
result = temp1.replaceAll("!tmp!txt!", temp2);
|
|
result = result.replaceAll("!tmp!!", "!tmp!");
|
|
preformatted = false;
|
|
}
|
|
} //start <pre>
|
|
else if (((p0 = result.indexOf("<pre>")) >= 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!");
|
|
result = bq + result.replaceAll("!pre!txt!", preformattedText);
|
|
result = result.replaceAll("!pre!!", "!pre!");
|
|
preformattedSpan = true;
|
|
} //end </pre>
|
|
else if (((p0 = result.indexOf("</pre>")) >= 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!!"));
|
|
result = result.replaceAll("!pre!txt!", preformattedText) + bq;
|
|
result = result.replaceAll("!pre!!", "!pre!");
|
|
preformatted = false;
|
|
} //Getting rid of surplus </pre>
|
|
else if (((p0 = result.indexOf("</pre>")) >= 0) && (!preformattedSpan) && (!escaped)) {
|
|
while ((p0 = result.indexOf("</pre>")) >= 0) {
|
|
result = result.substring(0, p0) + result.substring(p0 + 12);
|
|
}
|
|
result = transformLine(result);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/** This method creates a directory for a wiki page.
|
|
* @return directory of the wiki
|
|
*/
|
|
//method contributed by [MN]
|
|
private StringBuilder directory() {
|
|
StringBuilder directory = new StringBuilder();
|
|
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) {
|
|
directory.append("<table><tr><td><div class=\"WikiTOCBox\">\n");
|
|
for (int i = 0; i < s; i++) {
|
|
if (i >= dirElements.size()) {
|
|
break;
|
|
}
|
|
element = dirElements.get(i);
|
|
if (element == null) continue;
|
|
//counting double headlines
|
|
doubles = 0;
|
|
for (int j = 0; j < i; j++) {
|
|
if (j >= dirElements.size()) {
|
|
break;
|
|
}
|
|
String d = dirElements.get(j);
|
|
if (d == null || d.length() < 1) {
|
|
continue;
|
|
}
|
|
String a = d.substring(1).replaceAll(" ", "_").replaceAll("[^a-zA-Z0-9_]", "");
|
|
String b = element.substring(1).replaceAll(" ", "_").replaceAll("[^a-zA-Z0-9_]", "");
|
|
if (a.equals(b)) {
|
|
doubles++;
|
|
}
|
|
}
|
|
//if there are doubles, create anchorextension
|
|
if (doubles > 0) {
|
|
anchorext = "_" + (doubles + 1);
|
|
}
|
|
|
|
if (element.length() > 0 && element.charAt(0) == '3') {
|
|
if (level < 3) {
|
|
level = 3;
|
|
level3 = 0;
|
|
}
|
|
level3++;
|
|
final String temp = element.substring(1);
|
|
element = level1 + "." + level2 + "." + level3 + " " + temp;
|
|
directory.append(" <a href=\"#");
|
|
directory.append(temp.replaceAll(" ", "_").replaceAll("[^a-zA-Z0-9_]", ""));
|
|
directory.append(anchorext);
|
|
directory.append("\" class=\"WikiTOC\">");
|
|
directory.append(element);
|
|
directory.append("</a><br />\n");
|
|
} else if (element.length() > 0 && element.charAt(0) == '2') {
|
|
if (level == 1) {
|
|
level2 = 0;
|
|
level = 2;
|
|
}
|
|
if (level == 3) {
|
|
level = 2;
|
|
}
|
|
level2++;
|
|
final String temp = element.substring(1);
|
|
element = level1 + "." + level2 + " " + temp;
|
|
directory.append(" <a href=\"#");
|
|
directory.append(temp.replaceAll(" ", "_").replaceAll("[^a-zA-Z0-9_]", ""));
|
|
directory.append(anchorext);
|
|
directory.append("\" class=\"WikiTOC\">");
|
|
directory.append(element);
|
|
directory.append("</a><br />\n");
|
|
} else if (element.length() > 0 && element.charAt(0) == '1') {
|
|
if (level > 1) {
|
|
level = 1;
|
|
level2 = 0;
|
|
level3 = 0;
|
|
}
|
|
level1++;
|
|
final String temp = element.substring(1);
|
|
element = level1 + ". " + temp;
|
|
directory.append("<a href=\"#");
|
|
directory.append(temp.replaceAll(" ", "_").replaceAll("[^a-zA-Z0-9_]", ""));
|
|
directory.append(anchorext + "\" class=\"WikiTOC\">");
|
|
directory.append(element);
|
|
directory.append("</a><br />\n");
|
|
}
|
|
anchorext = "";
|
|
}
|
|
directory.append("</div></td></tr></table>\n");
|
|
}
|
|
if (!dirElements.isEmpty()) {
|
|
dirElements.clear();
|
|
}
|
|
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, final String pat, final String repl1, final String repl2) {
|
|
String direlem = null; //string to keep headlines until they get added to List dirElements
|
|
int p0 = 0;
|
|
int p1 = 0;
|
|
final 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 (Arrays.binarySearch(headlineTags, pat) >= 0) {
|
|
//add anchor and create headline
|
|
direlem = input.substring(p0 + l, p1);
|
|
if (direlem != null) {
|
|
//counting double headlines
|
|
int doubles = 0;
|
|
for (int i = 0; i < dirElements.size(); i++) {
|
|
// no element with null value should ever be in directory
|
|
assert (dirElements.get(i) != null);
|
|
|
|
if (dirElements.size() > i && dirElements.get(i).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 (Arrays.binarySearch(headlineTags, pat) >= 0) {
|
|
dirElements.add((pat.length() - 1) + direlem);
|
|
}
|
|
}
|
|
} else {
|
|
input = input.substring(0, p0) + repl1 +
|
|
(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
|
|
* @return the line of text with HTML tags instead of wiki tags
|
|
*/
|
|
public String transformLine(String result) {
|
|
//If HTML has not bee replaced yet (can happen if method gets called in recursion), replace now!
|
|
if (!replacedHTML || preformattedSpan) {
|
|
result = CharacterCoding.unicode2html(result, true);
|
|
replacedHTML = true;
|
|
}
|
|
|
|
//check if line contains preformatted symbols or if we are in a preformatted sequence already.
|
|
if ((result.indexOf("<pre>") >= 0) || (result.indexOf("</pre>") >= 0) || (preformattedSpan)) {
|
|
result = preformattedTag(result);
|
|
} else {
|
|
|
|
//tables first -> wiki-tags in cells can be treated after that
|
|
result = processTable(result);
|
|
|
|
// format lines
|
|
if (result.length() > 0 && result.charAt(0) == ' ') {
|
|
result = "<tt>" + result.substring(1) + "</tt>";
|
|
}
|
|
if (result.startsWith("----")) {
|
|
result = "<hr />";
|
|
}
|
|
|
|
// citings contributed by [MN]
|
|
if (result.length() > 0 && result.charAt(0) == ':') {
|
|
String head = "";
|
|
String tail = "";
|
|
while (result.length() > 0 && result.charAt(0) == ':') {
|
|
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);
|
|
|
|
}
|
|
|
|
if (!preformatted) {
|
|
replacedHTML = false;
|
|
}
|
|
if ((result.endsWith("</li>")) || (defList) || (escape) || (preformatted) || (table) || (cellprocessing)) {
|
|
return result;
|
|
}
|
|
return result + "<br />";
|
|
}
|
|
}
|