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/*******************************************************************************
* Copyright (c) 2009 Red Hat, Inc.
* 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:
* Elliott Baron <ebaron@redhat.com> - initial API and implementation
* Alena Laskavaia - Bug 482947 - Valgrind Message API's: get rid of launch dependency
*******************************************************************************/
package org.eclipse.linuxtools.internal.valgrind.core;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Stack;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.model.IPersistableSourceLocator;
import org.eclipse.debug.core.model.ISourceLocator;
import org.eclipse.debug.core.sourcelookup.IPersistableSourceLocator2;
import org.eclipse.debug.core.sourcelookup.ISourceLookupDirector;
import org.eclipse.linuxtools.valgrind.core.CommandLineConstants;
import org.eclipse.linuxtools.valgrind.core.IValgrindMessage;
import org.eclipse.linuxtools.valgrind.core.ValgrindParserUtils;
/**
* Parser for paring valgrind generic output into array of hierarchical messages
*/
public class ValgrindCoreParser {
private static final String AT = "at"; //$NON-NLS-1$
private static final String BY = "by"; //$NON-NLS-1$
private List<IValgrindMessage> messages;
private int pid;
private ILaunch launch;
private ISourceLocator locator;
/**
* When using this method make sure locator passed to this method can
* outlive disposal of launch object if it was derived from it, use
* {@link #copyLaunchSourceLocator(ILaunch)} if needed
*
* @param inputFile
* - file to parse
* @param launch
* - launch object, can be null
* @param locator
* - source locator
* @throws IOException if file is not found or error reading it
*/
public ValgrindCoreParser(File inputFile, ILaunch launch, ISourceLocator locator) throws IOException {
this.launch = launch;
this.locator = locator;
// keep track of nested messages and their corresponding indents
Stack<IValgrindMessage> messageStack = new Stack<>();
Stack<Integer> indentStack = new Stack<>();
messages = new ArrayList<>();
try (BufferedReader br = new BufferedReader(new FileReader(inputFile))) {
pid = ValgrindParserUtils.parsePID(inputFile.getName(), CommandLineConstants.LOG_PREFIX);
String line;
while ((line = br.readLine()) != null) {
// remove PID string
// might encounter warnings also #325130
// fixed #423371 - handle timestamp (e.g. ==00:00:00:01.175 52756728==)
line = line.replaceFirst("==([\\d:\\.]+\\s)?\\d+==|\\*\\*\\d+\\*\\*", ""); //$NON-NLS-1$ //$NON-NLS-2$
int indent;
for (indent = 0; indent < line.length()
&& line.charAt(indent) == ' '; indent++){}
line = line.trim();
if (!line.isEmpty()) {
/*
* indent == 1 -> top level message
* indent > 1 -> child message
* indent == 0 -> should not occur
*/
if (indent == 1) {
// top-level message, clear stacks
IValgrindMessage message = getMessage(null, line);
messages.add(message);
messageStack.clear();
messageStack.push(message);
indentStack.clear();
indentStack.push(indent);
} else if (indent > 1) {
/**
* We assume that an indented child message has a
* parent, but this may not be the case.
* See BZ #360225
*/
if (indentStack.isEmpty()) {
// pretend this is a top level message
IValgrindMessage message = getMessage(null, line);
messages.add(message);
messageStack.clear();
messageStack.push(message);
indentStack.clear();
indentStack.push(1);
} else {
// find this message's parent
while (indent <= indentStack.peek()) {
messageStack.pop();
indentStack.pop();
}
messageStack.push(getMessage(messageStack.peek(), line));
indentStack.push(indent);
}
}
}
}
}
}
private IValgrindMessage getMessage(IValgrindMessage message, String line) {
if (line.startsWith(AT) || line.startsWith(BY)) {
Object[] parsed = ValgrindParserUtils.parseFilename(line);
String filename = (String) parsed[0];
int lineNo = (Integer) parsed[1];
return new ValgrindStackFrame(message, line, launch, locator, filename, lineNo);
}
return new ValgrindError(message, line, launch, pid);
}
/**
* Return messages from paring
* @return all parsed messages
*
*/
public IValgrindMessage[] getMessages() {
return messages.toArray(new IValgrindMessage[messages.size()]);
}
/**
* Constructor
* @param inputFile - file to parse
* @param launch - launch object can be null
* @throws IOException if cannot open file
*/
public ValgrindCoreParser(File inputFile, ILaunch launch) throws IOException {
this(inputFile, launch, copyLaunchSourceLocator(launch));
}
/**
* Return a safe source locator from launch object which won't be disposed if launch object is disposed
* @param launch - launch object
* @return source locator
*
*/
public static ISourceLocator copyLaunchSourceLocator(ILaunch launch) {
if (launch == null)
return null;
ISourceLocator sourceLocator = launch.getSourceLocator();
ILaunchConfiguration launchConfiguration = launch.getLaunchConfiguration();
// sourceLocator from launch object will be disposed when launch is
// gone,
// since we want to use it later we need to create a copy of it
if (sourceLocator instanceof ISourceLookupDirector) {
try {
ISourceLookupDirector director = (ISourceLookupDirector) sourceLocator;
String id = director.getId();
String memento = director.getMemento();
IPersistableSourceLocator sourceLocatorCopy = DebugPlugin.getDefault().getLaunchManager()
.newSourceLocator(id);
if (sourceLocatorCopy instanceof IPersistableSourceLocator2) {
((IPersistableSourceLocator2) sourceLocatorCopy).initializeFromMemento(memento,
launchConfiguration);
} else
sourceLocatorCopy.initializeFromMemento(memento);
return sourceLocatorCopy;
} catch (CoreException e) {
// ignore
}
}
return sourceLocator;
}
}
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