| /******************************************************************************* |
| * Copyright (c) 2009, 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 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.core.parser.markup.block; |
| |
| import java.util.regex.Pattern; |
| |
| import org.eclipse.mylyn.wikitext.core.parser.Attributes; |
| import org.eclipse.mylyn.wikitext.core.parser.DocumentBuilder.BlockType; |
| import org.eclipse.mylyn.wikitext.core.parser.markup.Block; |
| |
| /** |
| * A block for Java stack traces. Matches any text that looks like a stack trace, even if it is only a portion (it's |
| * common for stack traces to be clipped to eliminate unrelated text). |
| * |
| * @author David Green |
| * @since 1.1 |
| */ |
| public class JavaStackTraceBlock extends Block { |
| |
| //java.lang.Exception: java.lang.IllegalStateException |
| // at org.eclipse.mylyn.internal.wikitext.tasks.ui.util.Test.main(Test.java:21) |
| //Caused by: java.lang.IllegalStateException |
| // ... 1 more |
| |
| private static final String PACKAGE_PART = "([a-z][a-z0-9]*)"; //$NON-NLS-1$ |
| |
| private static final String CLASS_PART = "[A-Za-z$][a-zA-Z0-9_$]*"; //$NON-NLS-1$ |
| |
| private static final String FQN_PART = "((" + PACKAGE_PART + "(\\." + PACKAGE_PART + ")*\\." + CLASS_PART + ")|(\\$Proxy\\d+))"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ |
| |
| private static final Pattern STACK_TRACE_PATTERN = Pattern.compile("\\s*((" + "((Caused by:\\s+)|(at\\s+))?" //$NON-NLS-1$//$NON-NLS-2$ |
| + FQN_PART + "((:\\s+\\w.*)|(\\.((\\<(?:cl)?init\\>)|([a-zA-Z0-9_$]+))\\(.*?\\)))?" //$NON-NLS-1$ |
| + ")|(\\.\\.\\.\\s\\d+\\smore))"); //$NON-NLS-1$ |
| |
| private int blockLineCount = 0; |
| |
| @Override |
| public boolean canStart(String line, int lineOffset) { |
| if (lineOffset == 0 && STACK_TRACE_PATTERN.matcher(line).matches()) { |
| blockLineCount = 0; |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| protected int processLineContent(String line, int offset) { |
| if (blockLineCount++ == 0) { |
| Attributes attributes = new Attributes(); |
| attributes.setCssClass("javaStackTrace"); //$NON-NLS-1$ |
| builder.beginBlock(BlockType.PREFORMATTED, attributes); |
| } else { |
| if (!STACK_TRACE_PATTERN.matcher(line).matches()) { |
| setClosed(true); |
| return 0; |
| } |
| } |
| |
| builder.characters(offset > 0 ? line.substring(offset) : line); |
| builder.characters("\n"); //$NON-NLS-1$ |
| |
| return -1; |
| } |
| |
| @Override |
| public void setClosed(boolean closed) { |
| if (closed && !isClosed()) { |
| builder.endBlock(); |
| } |
| super.setClosed(closed); |
| } |
| } |