/**
* Parse a raw Wiki link of the form "[[link|text]]", and return a WikiLink object representing
* the link.
*
* @param parserInput Input configuration settings for this parser instance.
* @param raw The raw Wiki link text.
* @return A WikiLink object that represents the link.
*/
protected static WikiLink parseWikiLink(
ParserInput parserInput, ParserOutput parserOutput, String raw) throws ParserException {
if (StringUtils.isBlank(raw)) {
return new WikiLink();
}
raw = raw.trim();
String suffix = ((!raw.endsWith("]]")) ? raw.substring(raw.lastIndexOf("]]") + 2) : null);
// for performance reasons use String methods rather than regex
// private static final Pattern WIKI_LINK_PATTERN =
// Pattern.compile("\\[\\[\\s*(\\:\\s*)?\\s*(.+?)(\\s*\\|\\s*(.+))?\\s*\\]\\]([a-z]*)");
raw = raw.substring(raw.indexOf("[[") + 2, raw.lastIndexOf("]]")).trim();
// parse in case there is a template or magic word - [[{{PAGENAME}}]]
raw = JFlexParserUtil.parseFragment(parserInput, parserOutput, raw, JFlexParser.MODE_TEMPLATE);
boolean colon = false;
if (raw.startsWith(":")) {
colon = true;
raw = raw.substring(1).trim();
}
String text = null;
int pos = raw.indexOf('|');
if (pos != -1 && pos != (raw.length() - 1)) {
text = raw.substring(pos + 1).trim();
raw = raw.substring(0, pos).trim();
}
String virtualWiki = parserInput.getVirtualWiki();
WikiLink wikiLink = LinkUtil.parseWikiLink(virtualWiki, raw);
if (!colon && wikiLink.getNamespace().getId().equals(Namespace.CATEGORY_ID)) {
// do not set default text for categories
wikiLink.setText(null);
}
if (wikiLink.getVirtualWiki() != null
&& !StringUtils.equals(wikiLink.getVirtualWiki().getName(), virtualWiki)
&& StringUtils.isBlank(wikiLink.getDestination())) {
// use the root topic name as the destination
wikiLink.setDestination(wikiLink.getVirtualWiki().getRootTopicName());
if (StringUtils.isBlank(wikiLink.getText())) {
wikiLink.setText(wikiLink.getVirtualWiki().getName() + Namespace.SEPARATOR);
}
}
if (wikiLink.getInterwiki() != null
&& StringUtils.isBlank(wikiLink.getDestination())
&& StringUtils.isBlank(wikiLink.getText())) {
wikiLink.setText(wikiLink.getInterwiki().getInterwikiPrefix() + Namespace.SEPARATOR);
}
wikiLink.setColon(colon);
if (text != null) {
wikiLink.setText(text);
}
if (!StringUtils.isBlank(suffix)) {
wikiLink.setText(wikiLink.getText() + suffix);
}
return wikiLink;
}
/**
* Parse a raw Wiki link of the form "[[link|text]]", and return a WikiLink object representing
* the link.
*
* @param raw The raw Wiki link text.
* @return A WikiLink object that represents the link.
*/
protected static WikiLink parseWikiLink(String raw) {
if (StringUtils.isBlank(raw)) {
return new WikiLink();
}
Matcher m = WIKI_LINK_PATTERN.matcher(raw.trim());
if (!m.matches()) {
return new WikiLink();
}
String url = m.group(2);
WikiLink wikiLink = LinkUtil.parseWikiLink(url);
wikiLink.setColon((m.group(1) != null));
wikiLink.setText(m.group(4));
String suffix = m.group(5);
if (!StringUtils.isBlank(suffix)) {
if (StringUtils.isBlank(wikiLink.getText())) {
wikiLink.setText(wikiLink.getDestination() + suffix);
} else {
wikiLink.setText(wikiLink.getText() + suffix);
}
}
return wikiLink;
}
