| /******************************************************************************* |
| * 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 v2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * 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.markup.Block; |
| import org.eclipse.mylyn.wikitext.textile.internal.Textile; |
| |
| /** |
| * Matches any textile text, including lines starting with <code>p. </code>. |
| * |
| * @author David Green |
| */ |
| public class HeadingBlock extends Block { |
| |
| private static final int LINE_REMAINDER_GROUP_OFFSET = Textile.ATTRIBUTES_BLOCK_GROUP_COUNT + 2; |
| |
| static final Pattern startPattern = Pattern.compile("h([1-6])" + Textile.REGEX_BLOCK_ATTRIBUTES + "\\.\\s+(.*)"); //$NON-NLS-1$ //$NON-NLS-2$ |
| |
| private int blockLineCount = 0; |
| |
| private int level = -1; |
| |
| private Matcher matcher; |
| |
| public HeadingBlock() { |
| } |
| |
| @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 "hn. " prefix. |
| level = Integer.parseInt(matcher.group(1)); |
| Textile.configureAttributes(attributes, matcher, 2, true); |
| offset = matcher.start(LINE_REMAINDER_GROUP_OFFSET); |
| } |
| if (attributes.getId() == null) { |
| attributes.setId(state.getIdGenerator().newId("h" + level, line.substring(offset))); //$NON-NLS-1$ |
| } |
| builder.beginHeading(level, attributes); |
| } |
| if (markupLanguage.isEmptyLine(line)) { |
| setClosed(true); |
| return 0; |
| } |
| if (blockLineCount != 0) { |
| getMarkupLanguage().emitMarkupText(getParser(), state, "\n"); //$NON-NLS-1$ |
| } |
| ++blockLineCount; |
| |
| getMarkupLanguage().emitMarkupLine(getParser(), state, line, offset); |
| |
| return -1; |
| } |
| |
| @Override |
| public boolean canStart(String line, int lineOffset) { |
| blockLineCount = 0; |
| if (lineOffset == 0) { |
| matcher = startPattern.matcher(line); |
| return matcher.matches(); |
| } else { |
| matcher = null; |
| return false; |
| } |
| } |
| |
| @Override |
| public void setClosed(boolean closed) { |
| if (closed && !isClosed()) { |
| builder.endHeading(); |
| } |
| super.setClosed(closed); |
| } |
| |
| } |