/*******************************************************************************
* Copyright (c) 2007, 2008 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
*******************************************************************************/
package org.eclipse.mylyn.wikitext.textile.internal.block;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.mylyn.wikitext.parser.Attributes;
import org.eclipse.mylyn.wikitext.parser.DocumentBuilder.BlockType;
import org.eclipse.mylyn.wikitext.parser.markup.Block;
import org.eclipse.mylyn.wikitext.textile.TextileLanguage;
import org.eclipse.mylyn.wikitext.textile.internal.Textile;
/**
* Matches any textile text, including lines starting with <code>p. </code>.
*
* @author David Green
*/
public class ParagraphBlock extends Block {
private static final int LINE_REMAINDER_GROUP_OFFSET = Textile.ATTRIBUTES_BLOCK_GROUP_COUNT + 1;
static final Pattern startPattern = Pattern.compile("p" + Textile.REGEX_BLOCK_ATTRIBUTES + "\\.\\s+(.*)"); //$NON-NLS-1$ //$NON-NLS-2$
private int blockLineCount = 0;
private boolean unwrapped = false;
private boolean enableUnwrapped = true;
public ParagraphBlock() {
}
@Override
public int processLineContent(String line, int offset) {
if (blockLineCount == 0) {
Attributes attributes = new Attributes();
if (offset == 0) {
// 0-offset matches may start with the "p. " prefix.
Matcher matcher = startPattern.matcher(line);
if (matcher.matches()) {
Textile.configureAttributes(attributes, matcher, 1, true);
offset = matcher.start(LINE_REMAINDER_GROUP_OFFSET);
} else {
if (line.charAt(0) == ' ') {
offset = 1;
if (enableUnwrapped) {
unwrapped = true;
}
}
}
}
if (!unwrapped) {
builder.beginBlock(BlockType.PARAGRAPH, attributes);
}
}
if (markupLanguage.isEmptyLine(line)) {
setClosed(true);
return 0;
}
TextileLanguage textileLanguage = (TextileLanguage) getMarkupLanguage();
// NOTE: in Textile paragraphs can have nested lists and other things, however
// the resulting XHTML is invalid -- so here we allow for similar constructs
// however we cause them to end the paragraph rather than being nested.
for (Block block : textileLanguage.getParagraphBreakingBlocks()) {
if (block.canStart(line, offset)) {
setClosed(true);
return 0;
}
}
if (blockLineCount != 0) {
if (unwrapped) {
builder.characters("\n"); //$NON-NLS-1$
} else {
builder.lineBreak();
}
}
++blockLineCount;
textileLanguage.emitMarkupLine(getParser(), state, line, offset);
return -1;
}
@Override
public boolean canStart(String line, int lineOffset) {
unwrapped = false;
blockLineCount = 0;
return true;
}
@Override
public void setClosed(boolean closed) {
if (closed && !isClosed()) {
if (!unwrapped) {
builder.endBlock();
}
}
super.setClosed(closed);
}
public void setEnableUnwrapped(boolean enableUnwrapped) {
this.enableUnwrapped = enableUnwrapped;
}
public boolean isEnableUnwrapped() {
return enableUnwrapped;
}
}