not getting in the way
private boolean newRowStart = false; //needed for the first row not to be empty
private boolean noList = false; //needed for handling of [= and in lists
private boolean processingPreformattedText = false; //needed for preformatted text
private boolean preformattedSpanning = false; //needed for and
spanning over several lines
private boolean replacedHtmlAlready = false; //indicates if method replaceHTML has been used with line already
private boolean processingTable = false; //needed for tables, because they reach over several lines
private int preindented = 0; //needed for indented s
static {
/* Arrays must be sorted since Arrays.searchBinary() is used later. For more info go to
* http://java.sun.com/javase/6/docs/api/java/util/Arrays.html#binarySearch(T[], T, java.util.Comparator)
*/
Arrays.sort(HEADLINE_LEVEL);
Arrays.sort(HEADLINE_TAGS);
Arrays.sort(TABLE_PROPERTIES);
String[] array;
Arrays.sort(array = new String[]{"void", "above", "below", "hsides", "lhs", "rhs", "vsides", "box", "border"});
PROPERTY_VALUES.put("frame", array);
Arrays.sort(array = new String[]{"none", "groups", "rows", "cols", "all"});
PROPERTY_VALUES.put("rules", array);
Arrays.sort(array = new String[]{"top", "middle", "bottom", "baseline"});
PROPERTY_VALUES.put("valign", array);
Arrays.sort(array = new String[]{"left", "right", "center"});
PROPERTY_VALUES.put("align", array);
}
private enum ListType {
ORDERED, UNORDERED;
}
/**
* Constructor
* @param address
*/
public WikiCode() {
super();
}
/**
* Transforms a text which contains wiki code to HTML fragment.
* @param reader contains the text to be transformed.
* @param length expected length of text, used to create buffer with right size.
* @return HTML fragment.
* @throws IOException in case input from reader can not be read.
*/
protected String transform(String hostport, final BufferedReader reader, final int length)
throws IOException {
final StringBuilder out = new StringBuilder(length);
String line;
while ((line = reader.readLine()) != null) {
out.append(processLineOfWikiCode(hostport, line)).append(serverCore.CRLF_STRING);
}
return out.insert(0, createTableOfContents()).toString();
}
// contributed by [FB], changes by [MN]
/**
* Processes tags which are connected to tables.
* @param line line of text to be transformed from wiki code to HTML
* @return HTML fragment
*/
private String processTable(final String line) {
//some variables that make it easier to change codes for the table
final StringBuilder out = new StringBuilder();
final String tableStart = "{" + PIPE_ESCAPED; // {|
final String newLine = PIPE_ESCAPED + "-"; // |-
final String cellDivider = PIPE_ESCAPED + PIPE_ESCAPED; // ||
final String tableEnd = PIPE_ESCAPED + "}"; // |}
final String attribDivider = PIPE_ESCAPED; // |
final int lenTableStart = tableStart.length();
final int lenCellDivider = cellDivider.length();
final int lenTableEnd = tableEnd.length();
final int lenAttribDivider = attribDivider.length();
if (line.startsWith(tableStart) && !processingTable) {
processingTable = true;
newRowStart = true;
out.append(" lenTableStart) {
out.append(filterTableProperties(line.substring(lenTableStart).trim()));
}
out.append(">");
} else if (line.startsWith(newLine) && processingTable) { // new row
if (!newRowStart) {
out.append("\t\n");
} else {
newRowStart = false;
}
out.append("\t");
} else if (line.startsWith(cellDivider) && processingTable) {
out.append("\t\t 0) ? (line.indexOf(cellDivider, lenCellDivider)) : (line.length());
int propEnd = line.indexOf(attribDivider, lenCellDivider);
final int occImage = line.indexOf("[[Image:", lenCellDivider);
final int occEscape = line.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 = line.indexOf(attribDivider, lenCellDivider) + lenAttribDivider;
} else {
propEnd = cellEnd;
}
// both point at same place => new line
if (propEnd == cellEnd) {
propEnd = lenCellDivider;
} else {
out.append(filterTableProperties(line.substring(lenCellDivider, propEnd - lenAttribDivider).trim()));
}
// quick&dirty fix [MN]
if (propEnd > cellEnd) {
propEnd = lenCellDivider;
}
processingTable = false;
processingCell = true;
out.append(">");
out.append(processTable(line.substring(propEnd, cellEnd).trim()));
out.append("");
processingTable = true;
processingCell = false;
if (cellEnd < line.length()) {
out.append("\n");
out.append(processTable(line.substring(cellEnd)));
}
} else if (line.startsWith(tableEnd) && (processingTable)) { // Table end
processingTable = false;
out.append("\t
\n");
out.append(line.substring(lenTableEnd));
} else {
out.append(line);
}
return out.toString();
}
// contributed by [MN], changes by [FB]
/** 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 properties String which may contain several table properties and/or junk.
* @return String containing only table properties.
*/
private StringBuilder filterTableProperties(final String properties) {
final String[] values = properties.replaceAll(""", EMPTY).split("[= ]"); //splitting the string at = and blanks
final StringBuilder stringBuilder = new StringBuilder(properties.length());
String key, value;
String[] posVals;
final int numberOfValues = values.length;
for (int i = 0; i < numberOfValues; i++) {
key = values[i].trim();
if ("nowrap".equals(key)) {
appendKeyValuePair("nowrap", "nowrap", stringBuilder);
} else if (i + 1 < numberOfValues) {
value = values[++i].trim();
if (("summary".equals(key))
|| ("bgcolor".equals(key) && value.matches("#{0,1}[0-9a-fA-F]{1,6}|[a-zA-Z]{3,}"))
|| (("width".equals(key) || "height".equals(key)) && value.matches("\\d+%{0,1}"))
|| ((posVals = PROPERTY_VALUES.get(key)) != null && Arrays.binarySearch(posVals, value) >= 0)
|| (Arrays.binarySearch(TABLE_PROPERTIES, key) >= 0 && value.matches("\\d+"))) {
appendKeyValuePair(key, value, stringBuilder);
}
}
}
return stringBuilder;
}
/**
* Appends a key/value pair in HTML syntax to a given StringBuilder.
* @param key key to be appended.
* @param value value of key.
* @param stringBuilder this is what key/value are appended to.
* @return
*/
private StringBuilder appendKeyValuePair(final String key, final String value, final StringBuilder stringBuilder) {
return stringBuilder.append(" ").append(key).append("=\"").append(value).append("\"");
}
/**
* Processes tags which are connected to ordered lists.
* @param line line of text to be transformed from wiki code to HTML
* @return HTML fragment
*/
private String processOrderedList(final String line) {
return processList(line, ListType.ORDERED);
}
/**
* Processes tags which are connected to unordered lists.
* @param line line of text to be transformed from wiki code to HTML
* @return HTML fragment
*/
private String processUnorderedList(String line) {
return processList(line, ListType.UNORDERED);
}
/**
* Processes tags which are connected to ordered or unordered lists.
* @author contains code by [AS]
* @param line line of text to be transformed from wiki code to HTML
* @param listType type of tags to be processed
* @return HTML fragment
*/
private String processList(final String line, final ListType listType) {
final String ret;
if (!noList) { //lists only get processed if not forbidden (see code for [= and ).
String listLevel;
final String htmlOpenList;
final String htmlCloseList;
final char symbol;
if (ListType.ORDERED.equals(listType)) {
listLevel = orderedListLevel;
symbol = '#';
htmlOpenList = HTML_OPEN_ORDERED_LIST;
htmlCloseList = HTML_CLOSE_ORDERED_LIST;
} else if (ListType.UNORDERED.equals(listType)) {
listLevel = unorderedListLevel;
symbol = ASTERISK;
htmlOpenList = HTML_OPEN_UNORDERED_LIST;
htmlCloseList = HTML_CLOSE_UNORDERED_LIST;
} else {
throw new IllegalArgumentException("Unknown list type " + listType);
}
if (line.startsWith(listLevel + symbol)) { //more #
final StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append(htmlOpenList);
stringBuilder.append(serverCore.CRLF_STRING);
stringBuilder.append(HTML_OPEN_LIST_ELEMENT);
stringBuilder.append(line.substring(listLevel.length() + 1).trim());
stringBuilder.append(HTML_CLOSE_LIST_ELEMENT);
ret = stringBuilder.toString();
listLevel += symbol;
} else if (!listLevel.isEmpty() && line.startsWith(listLevel)) { //equal number of #
final StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append(HTML_OPEN_LIST_ELEMENT);
stringBuilder.append(line.substring(listLevel.length()).trim());
stringBuilder.append(HTML_CLOSE_LIST_ELEMENT);
ret = stringBuilder.toString();
} else if (!listLevel.isEmpty()) { //less #
final StringBuilder stringBuilder = new StringBuilder();
final StringBuilder tmp = new StringBuilder();
int i = listLevel.length();
while (!line.startsWith(listLevel.substring(0, i))) {
tmp.append(htmlCloseList);
i--;
}
listLevel = listLevel.substring(0, i);
final int startOfContent = listLevel.length();
if (startOfContent > 0) {
stringBuilder.append(tmp);
stringBuilder.append(HTML_OPEN_LIST_ELEMENT);
stringBuilder.append(line.substring(startOfContent).trim());
stringBuilder.append(HTML_CLOSE_LIST_ELEMENT);
} else {
stringBuilder.append(tmp);
stringBuilder.append(line.substring(startOfContent).trim());
}
ret = stringBuilder.toString();
} else {
ret = line;
}
if (ListType.ORDERED.equals(listType)) {
orderedListLevel = listLevel;
} else if (ListType.UNORDERED.equals(listType)) {
unorderedListLevel = listLevel;
}
} else {
ret = line;
}
return ret;
}
/**
* Processes tags which are connected to definition lists.
* @param line line of text to be transformed from wiki code to HTML
* @return HTML fragment
*/
private String processDefinitionList(final String line) {
final String ret;
if (!noList) { //lists only get processed if not forbidden (see code for [= and ). [MN]
if (line.startsWith(defListLevel + ";")) { //more semicolons
final String copyOfLine = line.substring(defListLevel.length() + 1);
final int positionOfOpeningTag;
if ((positionOfOpeningTag = copyOfLine.indexOf(":")) > 0) {
final String definitionItem = copyOfLine.substring(0, positionOfOpeningTag);
final String definitionDescription = copyOfLine.substring(positionOfOpeningTag + 1);
final StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append(HTML_OPEN_DEFINITION_LIST);
stringBuilder.append(HTML_OPEN_DEFINITION_ITEM);
stringBuilder.append(definitionItem);
stringBuilder.append(HTML_CLOSE_DEFINITION_ITEM);
stringBuilder.append(HTML_OPEN_DEFINITION_DESCRIPTION);
stringBuilder.append(definitionDescription);
processingDefList = true;
ret = stringBuilder.toString();
} else {
ret = line;
}
defListLevel += ";";
} else if (!defListLevel.isEmpty() && line.startsWith(defListLevel)) { //equal number of semicolons
final String copyOfLine = line.substring(defListLevel.length());
final int positionOfOpeningTag;
if ((positionOfOpeningTag = copyOfLine.indexOf(":")) > 0) {
final String definitionItem = copyOfLine.substring(0, positionOfOpeningTag);
final String definitionDescription = copyOfLine.substring(positionOfOpeningTag + 1);
final StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append(HTML_OPEN_DEFINITION_ITEM);
stringBuilder.append(definitionItem);
stringBuilder.append(HTML_CLOSE_DEFINITION_ITEM);
stringBuilder.append(HTML_OPEN_DEFINITION_DESCRIPTION);
stringBuilder.append(definitionDescription);
processingDefList = true;
ret = stringBuilder.toString();
} else {
ret = line;
}
} else if (!defListLevel.isEmpty()) { //less semicolons
int i = defListLevel.length();
String tmp = EMPTY;
while (!line.startsWith(defListLevel.substring(0, i))) {
tmp = HTML_CLOSE_DEFINITION_DESCRIPTION + HTML_CLOSE_DEFINITION_LIST;
i--;
}
defListLevel = defListLevel.substring(0, i);
int positionOfOpeningTag = defListLevel.length();
if (!defListLevel.isEmpty()) {
final String copyOfLine = line.substring(positionOfOpeningTag);
if ((positionOfOpeningTag = copyOfLine.indexOf(":")) > 0) {
final String definitionItem = copyOfLine.substring(0, positionOfOpeningTag);
final String definitionDescription = copyOfLine.substring(positionOfOpeningTag + 1);
final StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append(tmp);
stringBuilder.append(HTML_OPEN_DEFINITION_ITEM);
stringBuilder.append(definitionItem);
stringBuilder.append(HTML_CLOSE_DEFINITION_ITEM);
stringBuilder.append(HTML_OPEN_DEFINITION_DESCRIPTION);
stringBuilder.append(definitionDescription);
processingDefList = true;
ret = stringBuilder.toString();
} else {
ret = line;
}
} else {
final StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append(tmp);
stringBuilder.append(line.substring(positionOfOpeningTag));
ret = stringBuilder.toString();
}
} else {
ret = line;
}
} else {
ret = line;
}
return ret;
}
/**
* Processes tags which are connected to links and images.
* @author [AS], [MN]
* @param line line of text to be transformed from wiki code to HTML
* @return HTML fragment
*/
private String processLinksAndImages(String hostport, String line) {
// create links
String kl, kv, alt, align;
int p;
int positionOfOpeningTag;
int positionOfClosingTag;
// internal links and images
while ((positionOfOpeningTag = line.indexOf(WIKI_OPEN_LINK)) >= 0) {
positionOfClosingTag = line.indexOf(WIKI_CLOSE_LINK, positionOfOpeningTag + LEN_WIKI_OPEN_LINK);
if (positionOfClosingTag <= positionOfOpeningTag) {
break;
}
kl = line.substring(positionOfOpeningTag + LEN_WIKI_OPEN_LINK, positionOfClosingTag);
// this is the part of the code that's responsible for images
if (kl.startsWith(WIKI_IMAGE)) {
alt = EMPTY;
align = EMPTY;
kv = EMPTY;
kl = kl.substring(LEN_WIKI_IMAGE);
// are there any arguments for the image?
if ((p = kl.indexOf(PIPE_ESCAPED)) > 0) {
kv = kl.substring(p + LEN_WIKI_IMAGE);
kl = kl.substring(0, p);
// if there are 2 arguments, write them into ALIGN and ALT
if ((p = kv.indexOf(PIPE_ESCAPED)) > 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 (("bottom".equals(align))
|| ("center".equals(align))
|| ("left".equals(align))
|| ("middle".equals(align))
|| ("right".equals(align))
|| ("top".equals(align))) {
align = " align=\"" + align + "\"";
} else {
align = EMPTY;
}
alt = " alt=\"" + kv.substring(p + LEN_WIKI_IMAGE) + "\"";
} // 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://" + hostport + "/" + kl;
}
line = line.substring(0, positionOfOpeningTag) + "![](\"")
" + line.substring(positionOfClosingTag + 2);
}
// if it's no image, it might be an internal link
else {
if ((p = kl.indexOf(PIPE_ESCAPED)) > 0) {
kv = kl.substring(p + LEN_PIPE_ESCAPED);
kl = kl.substring(0, p);
} else {
kv = kl;
}
line = line.substring(0, positionOfOpeningTag) + "" + kv + "" + line.substring(positionOfClosingTag + 2); // oob exception in append() !
}
}
// external links
while ((positionOfOpeningTag = line.indexOf(WIKI_OPEN_EXTERNAL_LINK)) >= 0) {
positionOfClosingTag = line.indexOf(WIKI_CLOSE_EXTERNAL_LINK, positionOfOpeningTag + LEN_WIKI_OPEN_EXTERNAL_LINK);
if (positionOfClosingTag <= positionOfOpeningTag) {
break;
}
kl = line.substring(positionOfOpeningTag + LEN_WIKI_OPEN_EXTERNAL_LINK, positionOfClosingTag);
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("://") < 1) {
kl = "http://" + hostport + "/" + kl;
}
line = line.substring(0, positionOfOpeningTag) + "" + kv + "" + line.substring(positionOfClosingTag + LEN_WIKI_CLOSE_EXTERNAL_LINK);
}
return line;
}
/**
* Processes tags which are connected preformatted text (<pre> </pre>).
* @param line line of text to be transformed from wiki code to HTML
* @return HTML fragment
*/
private String processPreformattedText(String hostport, String line) {
if (!escaped) {
final int positionOfOpeningTag = line.indexOf(WIKI_OPEN_PRE_ESCAPED);
final int positionOfClosingTag = line.indexOf(WIKI_CLOSE_PRE_ESCAPED);
//both and
in the same line
if (positionOfOpeningTag >= 0 && positionOfClosingTag > 0) {
if (positionOfOpeningTag < positionOfClosingTag) {
final StringBuilder preformattedText = new StringBuilder();
preformattedText.append("");
preformattedText.append(line.substring(positionOfOpeningTag + LEN_WIKI_OPEN_PRE_ESCAPED, positionOfClosingTag));
preformattedText.append("");
line = processLineOfWikiCode(hostport, line.substring(0, positionOfOpeningTag).replaceAll("!pre!", "!pre!!") + "!pre!txt!" + line.substring(positionOfClosingTag + LEN_WIKI_CLOSE_PRE_ESCAPED).replaceAll("!pre!", "!pre!!"));
line = line.replace("!pre!txt!", preformattedText.toString().replaceAll("!pre!", "!pre!!"));
line = line.replaceAll("!pre!!", "!pre!");
} //handles cases like
that would cause an exception otherwise
else {
processingPreformattedText = true;
final String temp1 = processLineOfWikiCode(hostport, line.substring(0, positionOfOpeningTag - 1).replaceAll("!tmp!", "!tmp!!") + "!tmp!txt!");
noList = true;
final String temp2 = processLineOfWikiCode(hostport, line.substring(positionOfOpeningTag));
noList = false;
line = temp1.replaceAll("!tmp!txt!", temp2);
line = line.replaceAll("!tmp!!", "!tmp!");
processingPreformattedText = false;
}
} //start
else if (positionOfOpeningTag >= 0 && !preformattedSpanning) {
processingPreformattedText = true; //prevent surplus line breaks
final StringBuilder openBlockQuoteTags = new StringBuilder(); //gets filled with s as needed
String preformattedText = "" + line.substring(positionOfOpeningTag + LEN_WIKI_OPEN_PRE_ESCAPED);
preformattedText = preformattedText.replaceAll("!pre!", "!pre!!");
//taking care of indented lines
while (preindented < positionOfOpeningTag && positionOfOpeningTag < line.length() &&
line.substring(preindented, positionOfOpeningTag).charAt(0) == WIKI_INDENTION) {
preindented++;
openBlockQuoteTags.append(HTML_OPEN_BLOCKQUOTE);
}
line = processLineOfWikiCode(hostport, line.substring(preindented, positionOfOpeningTag).replaceAll("!pre!", "!pre!!") + "!pre!txt!");
line = openBlockQuoteTags + line.replace("!pre!txt!", preformattedText);
line = line.replaceAll("!pre!!", "!pre!");
preformattedSpanning = true;
} //end
else if (positionOfClosingTag >= 0 && preformattedSpanning) {
preformattedSpanning = false;
final StringBuilder endBlockQuoteTags = new StringBuilder(); //gets filled with
s as needed
String preformattedText = line.substring(0, positionOfClosingTag) + "";
preformattedText = preformattedText.replaceAll("!pre!", "!pre!!");
//taking care of indented lines
while (preindented > 0) {
endBlockQuoteTags.append(HTML_CLOSE_BLOCKQUOTE);
preindented--;
}
line = processLineOfWikiCode(hostport, "!pre!txt!" + line.substring(positionOfClosingTag + LEN_WIKI_CLOSE_PRE_ESCAPED).replaceAll("!pre!", "!pre!!"));
line = line.replace("!pre!txt!", preformattedText) + endBlockQuoteTags;
line = line.replaceAll("!pre!!", "!pre!");
processingPreformattedText = false;
} //Getting rid of surplus
else if (positionOfOpeningTag >= 0 && !preformattedSpanning) {
int posTag;
while ((posTag = line.indexOf(WIKI_CLOSE_PRE_ESCAPED)) >= 0) {
line = line.substring(0, posTag) + line.substring(posTag + LEN_WIKI_CLOSE_PRE_ESCAPED);
}
line = processLineOfWikiCode(hostport, line);
}
}
return line;
}
/** Creates table of contents for a wiki page.
* @return HTML fragment
*/
private StringBuilder createTableOfContents() {
final StringBuilder directory = new StringBuilder();
String element;
int s = 0;
int level = 1;
int level1 = 0;
int level2 = 0;
int level3 = 0;
int level4 = 0;
int level5 = 0;
int level6 = 0;
int doubles = 0;
String anchorext = EMPTY;
if ((s = tableOfContent.size()) > 2) {
directory.append("\n");
for (int i = 0; i < s; i++) {
if (i >= tableOfContent.size()) {
break;
}
element = tableOfContent.get(i);
if (element == null) {
continue;
}
//counting double headlines
doubles = 0;
for (int j = 0; j < i; j++) {
if (j >= tableOfContent.size()) {
break;
}
final String d = tableOfContent.get(j);
if (d == null || d.isEmpty()) {
continue;
}
final String a = d.substring(1).replaceAll(" ", "_").replaceAll(REGEX_NOT_CHAR_NUM_OR_UNDERSCORE, EMPTY);
final String b = element.substring(1).replaceAll(" ", "_").replaceAll(REGEX_NOT_CHAR_NUM_OR_UNDERSCORE, EMPTY);
if (a.equals(b)) {
doubles++;
}
}
//if there are doubles, create anchor extension
if (doubles > 0) {
anchorext = "_" + (doubles + 1);
}
final char l = element.charAt(0);
String temp = "";
if (Arrays.binarySearch(HEADLINE_LEVEL, l) >= 0 && !element.isEmpty()) {
switch (l) {
case SIX: {
if (level < 6) {
level = 6;
level6 = 0;
}
level6++;
temp = element.substring(1);
element = level1 + "." + level2 + "." + level3 + "." + level4 + "." + level5 + "." + level6 + " " + temp;
directory.append(" 1) {
level = 1;
level2 = 0;
level3 = 0;
level4 = 0;
level5 = 0;
level6 = 0;
}
level1++;
temp = element.substring(1);
element = level1 + ". " + temp;
directory.append("");
directory.append(element);
directory.append("\n");
}
anchorext = EMPTY;
}
directory.append(" |
\n");
}
return directory;
}
/**
* Replaces the wiki representation of tags with the HTML representation.
* @param input String which potentially contains tags to be replaced.
* @param tags tags to be replaced.
* @return input String with replaced tags.
*/
private String tagReplace(String input, final Tags tags) {
String direlem = null; //string to keep headlines until they get added to List dirElements
int firstPosition;
final int secondPosition;
//replace pattern if a pair of the pattern can be found in the line
if (((firstPosition = input.indexOf(tags.openWiki)) >= 0) &&
((secondPosition = input.indexOf(tags.closeWiki, firstPosition + tags.openWikiLength)) >= 0)) {
//extra treatment for headlines
if (Arrays.binarySearch(HEADLINE_TAGS, tags.openWiki) >= 0) {
//add anchor and create headline
if ((direlem = input.substring(firstPosition + tags.openWikiLength, secondPosition)) != null) {
//counting double headlines
int doubles = 0;
final Iterator iterator = tableOfContent.iterator();
String element;
while (iterator.hasNext()) {
element = iterator.next();
// no element with null value should ever be in directory
assert (element != null);
if (element.substring(1).equals(direlem)) {
doubles++;
}
}
String anchor = direlem.replaceAll(" ", "_").replaceAll(REGEX_NOT_CHAR_NUM_OR_UNDERSCORE, EMPTY); //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, firstPosition) + "" + tags.openHTML
+ direlem + tags.closeHTML + input.substring(secondPosition + tags.closeWikiLength);
//add headlines to list of headlines (so TOC can be created)
if (Arrays.binarySearch(HEADLINE_TAGS, tags.openWiki) >= 0) {
tableOfContent.add((tags.openWikiLength - 1) + direlem);
}
}
} else {
input = input.substring(0, firstPosition) + tags.openHTML
+ (input.substring(firstPosition + tags.openWikiLength, secondPosition)) + tags.closeHTML
+ input.substring(secondPosition + tags.closeWikiLength);
}
}
//recursion if another pair of the pattern can still be found in the line
if (((firstPosition = input.indexOf(tags.openWiki)) >= 0) && (input.indexOf(tags.closeWiki, firstPosition + tags.openWikiLength) >= 0)) {
input = tagReplace(input, tags);
}
return input;
}
/** Replaces wiki tags with HTML tags in one line of text.
* @param line line of text to be transformed from wiki code to HTML
* @return HTML fragment
*/
public String processLineOfWikiCode(String hostport, String line) {
//If HTML has not been replaced yet (can happen if method gets called in recursion), replace now!
if ((!replacedHtmlAlready || preformattedSpanning) && line.indexOf(WIKI_CLOSE_PRE_ESCAPED) < 0) {
line = CharacterCoding.unicode2html(line, true);
replacedHtmlAlready = true;
}
//check if line contains preformatted symbols or if we are in a preformatted sequence already.
if ((line.indexOf(WIKI_OPEN_PRE_ESCAPED) >= 0) ||
(line.indexOf(WIKI_CLOSE_PRE_ESCAPED) >= 0) ||
preformattedSpanning) {
line = processPreformattedText(hostport, line);
} else {
//tables first -> wiki-tags in cells can be treated after that
line = processTable(line);
// format lines
if (!line.isEmpty() && line.charAt(0) == WIKI_FORMATTED) {
line = "" + line.substring(1) + "";
}
if (line.startsWith(WIKI_HR_LINE)) {
line = "
" + line.substring(LEN_WIKI_HR_LINE);
}
if (!line.isEmpty() && line.charAt(0) == WIKI_INDENTION) {
final StringBuilder head = new StringBuilder();
final StringBuilder tail = new StringBuilder();
while (!line.isEmpty() && line.charAt(0) == WIKI_INDENTION) {
head.append(HTML_OPEN_BLOCKQUOTE);
tail.append(HTML_CLOSE_BLOCKQUOTE);
line = line.substring(1);
}
line = head + line + tail;
}
// format headers
line = tagReplace(line, Tags.HEADLINE_6);
line = tagReplace(line, Tags.HEADLINE_5);
line = tagReplace(line, Tags.HEADLINE_4);
line = tagReplace(line, Tags.HEADLINE_3);
line = tagReplace(line, Tags.HEADLINE_2);
line = tagReplace(line, Tags.HEADLINE_1);
line = tagReplace(line, Tags.EMPHASIZE_3);
line = tagReplace(line, Tags.EMPHASIZE_2);
line = tagReplace(line, Tags.EMPHASIZE_1);
line = tagReplace(line, Tags.STRIKE);
line = processUnorderedList(line);
line = processOrderedList(line);
line = processDefinitionList(line);
line = processLinksAndImages(hostport, line);
}
if (!processingPreformattedText) {
replacedHtmlAlready = false;
}
if (!(line.endsWith(HTML_CLOSE_LIST_ELEMENT) || processingDefList || escape || processingPreformattedText || processingTable || processingCell)) {
line += "
";
}
return line;
}
private class TableOfContent {
private final List toc = new ArrayList(); // needs to be list which ensures order
int size() {
return toc.size();
}
String get(final int index) {
return toc.get(index);
}
synchronized boolean add(final String element) {
return toc.add(element);
}
Iterator iterator() {
return toc.iterator();
}
}
}