| /******************************************************************************* |
| * Copyright (c) 2007, 2013 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.DocumentBuilder.BlockType; |
| import org.eclipse.mylyn.wikitext.parser.markup.Block; |
| import org.eclipse.mylyn.wikitext.textile.internal.Textile; |
| |
| /** |
| * Code text block, matches blocks that start with <code>bc. </code> |
| * |
| * @author David Green |
| */ |
| public class CodeBlock extends Block { |
| |
| private static final int LINE_REMAINDER_GROUP_OFFSET = Textile.ATTRIBUTES_BLOCK_GROUP_COUNT + 2; |
| |
| private static final int EXTENDED_GROUP = Textile.ATTRIBUTES_BLOCK_GROUP_COUNT + 1; |
| |
| static final Pattern startPattern = Pattern.compile("bc" + Textile.REGEX_BLOCK_ATTRIBUTES + "\\.(\\.)?\\s+(.*)"); //$NON-NLS-1$ //$NON-NLS-2$ |
| |
| private boolean extended; |
| |
| private int blockLineCount = 0; |
| |
| private Matcher matcher; |
| |
| public CodeBlock() { |
| } |
| |
| @Override |
| public int processLineContent(String line, int offset) { |
| if (blockLineCount == 0) { |
| Attributes attributes = new Attributes(); |
| |
| Textile.configureAttributes(attributes, matcher, 1, true); |
| offset = matcher.start(LINE_REMAINDER_GROUP_OFFSET); |
| extended = matcher.group(EXTENDED_GROUP) != null; |
| |
| builder.beginBlock(BlockType.CODE, attributes); |
| } |
| if (markupLanguage.isEmptyLine(line) && !extended) { |
| setClosed(true); |
| return 0; |
| } else if (extended && Textile.explicitBlockBegins(line, offset)) { |
| setClosed(true); |
| return offset; |
| } |
| ++blockLineCount; |
| |
| final String lineText = offset > 0 ? line.substring(offset) : line; |
| if (blockLineCount > 1 || lineText.trim().length() > 0) { |
| builder.characters(lineText); |
| builder.characters("\n"); //$NON-NLS-1$ |
| } |
| |
| 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.endBlock();// code |
| } |
| super.setClosed(closed); |
| } |
| |
| } |