/*******************************************************************************
* Copyright (c) 2007, 2012 David Green and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* David Green - initial API and implementation
* Jeremie Bresson - Bug 391850
*******************************************************************************/
package org.eclipse.mylyn.wikitext.mediawiki.internal.phrase;
import java.util.List;
import org.eclipse.mylyn.wikitext.parser.Attributes;
import org.eclipse.mylyn.wikitext.parser.DocumentBuilder.SpanType;
import org.eclipse.mylyn.wikitext.parser.markup.PatternBasedElement;
import org.eclipse.mylyn.wikitext.parser.markup.PatternBasedElementProcessor;
import com.google.common.collect.ImmutableList;
/**
* @author David Green
*/
public class SimpleWrappedPhraseModifier extends PatternBasedElement {
protected static final int CONTENT_GROUP = 1;
private static class SimplePhraseModifierProcessor extends PatternBasedElementProcessor {
private final List<SpanType> spanType;
private final boolean nesting;
public SimplePhraseModifierProcessor(SpanType[] spanType, boolean nesting) {
this.spanType = ImmutableList.copyOf(spanType);
this.nesting = nesting;
}
@Override
public void emit() {
for (SpanType type : spanType) {
getBuilder().beginSpan(type, new Attributes());
}
if (nesting) {
getMarkupLanguage().emitMarkupLine(parser, state, getStart(this), getContent(this), 0);
} else {
getMarkupLanguage().emitMarkupText(parser, state, getContent(this));
}
spanType.forEach(type -> getBuilder().endSpan());
}
}
private final String startDelimiter;
private final String endDelimiter;
private final SpanType[] spanType;
private final boolean nesting;
public SimpleWrappedPhraseModifier(String startDelimiter, String endDelimiter, SpanType[] spanType) {
this(startDelimiter, endDelimiter, spanType, false);
}
public SimpleWrappedPhraseModifier(String startDelimiter, String endDelimiter, SpanType[] spanType,
boolean nesting) {
this.startDelimiter = startDelimiter;
this.endDelimiter = endDelimiter;
this.spanType = spanType;
this.nesting = nesting;
}
@Override
protected String getPattern(int groupOffset) {
String quotedStartDelimiter = quoteLite(startDelimiter);
String quotedEndDelimiter = quoteLite(endDelimiter);
return quotedStartDelimiter + //
"((?:(?!" + quotedEndDelimiter + ").)+)" + // content //$NON-NLS-1$ //$NON-NLS-2$
quotedEndDelimiter;
}
/**
* quote a literal for use in a regular expression
*/
private String quoteLite(String literal) {
StringBuilder buf = new StringBuilder(literal.length() * 2);
for (int x = 0; x < literal.length(); ++x) {
char c = literal.charAt(x);
switch (c) {
case '^':
case '*':
case '?':
case '+':
case '-':
buf.append('\\');
}
buf.append(c);
}
return buf.toString();
}
@Override
protected int getPatternGroupCount() {
return 1;
}
protected static String getContent(PatternBasedElementProcessor processor) {
return processor.group(CONTENT_GROUP);
}
protected static int getStart(PatternBasedElementProcessor processor) {
return processor.start(CONTENT_GROUP);
}
@Override
protected PatternBasedElementProcessor newProcessor() {
return new SimplePhraseModifierProcessor(spanType, nesting);
}
}