/*******************************************************************************
* 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.tracwiki.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;
/**
* Table block, matches any line that looks like a table row.
*
* @author David Green
*/
public class TableBlock extends Block {
static final Pattern tableRowPattern = Pattern.compile("(\\|\\|(.*)?(\\|\\|\\s*$))"); //$NON-NLS-1$
static final Pattern TABLE_ROW_PATTERN = Pattern.compile("\\|\\|\\s*([^\\|]*)\\s*(\\|\\|\\s*$)?"); //$NON-NLS-1$
private int blockLineCount = 0;
private Matcher matcher;
public TableBlock() {
}
@Override
public int processLineContent(String line, int offset) {
if (blockLineCount == 0) {
Attributes attributes = new Attributes();
builder.beginBlock(BlockType.TABLE, attributes);
} else {
matcher = tableRowPattern.matcher(line);
if (!matcher.matches()) {
setClosed(true);
return 0;
}
}
++blockLineCount;
String textileLine = offset == 0 ? line : line.substring(offset);
Matcher rowMatcher = TABLE_ROW_PATTERN.matcher(textileLine);
if (!rowMatcher.find()) {
setClosed(true);
return 0;
}
builder.beginBlock(BlockType.TABLE_ROW, new Attributes());
do {
int start = rowMatcher.start();
if (start == textileLine.length() - 1) {
break;
}
String text = rowMatcher.group(1);
int textOffset = rowMatcher.start(1);
Attributes attributes = new Attributes();
state.setLineCharacterOffset(start);
builder.beginBlock(BlockType.TABLE_CELL_NORMAL, attributes);
markupLanguage.emitMarkupLine(getParser(), state, textOffset, text, 0);
builder.endBlock(); // table cell
} while (rowMatcher.find());
builder.endBlock(); // table row
return -1;
}
@Override
public boolean canStart(String line, int lineOffset) {
blockLineCount = 0;
if (lineOffset == 0) {
matcher = tableRowPattern.matcher(line);
return matcher.matches();
} else {
matcher = null;
return false;
}
}
@Override
public void setClosed(boolean closed) {
if (closed && !isClosed()) {
builder.endBlock();
}
super.setClosed(closed);
}
}