| /******************************************************************************* |
| * 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 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.confluence.internal.block; |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.eclipse.mylyn.wikitext.confluence.ConfluenceLanguage; |
| 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.parser.markup.MarkupLanguage; |
| |
| /** |
| * Matches any textile text, including lines starting with <code>p. </code>. |
| * |
| * @author David Green |
| */ |
| public class ParagraphBlock extends Block { |
| |
| private static final Pattern confluenceBlockStart = Pattern.compile("\\{(code|info|tip|warning|panel|note|toc|noformat)(?:(:[^\\}]*))?\\}"); //$NON-NLS-1$ |
| |
| private int blockLineCount = 0; |
| |
| public ParagraphBlock() { |
| } |
| |
| @Override |
| public int processLineContent(String line, int offset) { |
| if (blockLineCount == 0) { |
| Attributes attributes = new Attributes(); |
| |
| builder.beginBlock(BlockType.PARAGRAPH, attributes); |
| } |
| |
| if (markupLanguage.isEmptyLine(line)) { |
| setClosed(true); |
| return 0; |
| } |
| |
| ++blockLineCount; |
| |
| ConfluenceLanguage markupLanguage = (ConfluenceLanguage) getMarkupLanguage(); |
| |
| // NOTE: in Confluence 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. |
| if (paragraphBreakingBlockMatches(markupLanguage, line, offset)) { |
| setClosed(true); |
| return 0; |
| } |
| |
| Matcher blockStartMatcher = confluenceBlockStart.matcher(line); |
| if (offset > 0) { |
| blockStartMatcher.region(offset, line.length()); |
| } |
| if (blockStartMatcher.find()) { |
| int end = blockStartMatcher.start(); |
| if (end > offset) { |
| markupLanguage.emitMarkupLine(getParser(), state, offset, line.substring(offset, end), 0); |
| } |
| setClosed(true); |
| return end; |
| } |
| if (blockLineCount > 1) { |
| builder.lineBreak(); |
| } |
| markupLanguage.emitMarkupLine(getParser(), state, line, offset); |
| |
| return -1; |
| } |
| |
| @Override |
| public boolean canStart(String line, int lineOffset) { |
| blockLineCount = 0; |
| return true; |
| } |
| |
| @Override |
| public void setClosed(boolean closed) { |
| if (closed && !isClosed()) { |
| builder.endBlock(); |
| } |
| super.setClosed(closed); |
| } |
| |
| static boolean paragraphBreakingBlockMatches(MarkupLanguage language, String line, int offset) { |
| ConfluenceLanguage markupLanguage = (ConfluenceLanguage) language; |
| for (Block block : markupLanguage.getParagraphBreakingBlocks()) { |
| if (block.canStart(line, offset)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |