org.powermock.modules.agent.AgentInitialization Maven / Gradle / Ivy
/*
* The JMockit Testing Toolkit
* Copyright (c) 2006-2011 Rogério Liesenfeld
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package org.powermock.modules.agent;
import java.io.File;
import java.net.URI;
import java.net.URISyntaxException;
import java.security.CodeSource;
import java.util.regex.Pattern;
final class AgentInitialization
{
private static final Pattern JAR_REGEX = Pattern.compile(".*powermock-module-javaagent[-]?[.\\d+]*[-]?[A-Z]*.jar");
void initializeAccordingToJDKVersion() {
String jarFilePath = discoverPathToJarFile();
if (PowerMockAgent.jdk6OrLater) {
new AgentLoader(jarFilePath).loadAgent();
}
else if ("1.5".equals(PowerMockAgent.javaSpecVersion)) {
throw new IllegalStateException(
"PowerMock has not been initialized. Check that your Java 5 VM has been started with the -javaagent:" +
jarFilePath + " command line option.");
}
else {
throw new IllegalStateException("PowerMock requires a Java 5 VM or later.");
}
}
private String discoverPathToJarFile()
{
String jarFilePath = findPathToJarFileFromClasspath();
if (jarFilePath == null) {
// This can fail for a remote URL, so it is used as a fallback only:
jarFilePath = getPathToJarFileContainingThisClass();
}
if (jarFilePath != null) {
return jarFilePath;
}
throw new IllegalStateException(
"No jar file with name ending in \"powermock-module-javaagent.jar\" or \"powermock-module-javaagent-nnn.jar\" (where \"nnn\" is a version number) " +
"found in the classpath");
}
private String findPathToJarFileFromClasspath()
{
String[] classPath = System.getProperty("java.class.path").split(File.pathSeparator);
for (String cpEntry : classPath) {
if (JAR_REGEX.matcher(cpEntry).matches()) {
return cpEntry;
}
}
return null;
}
private String getPathToJarFileContainingThisClass() {
CodeSource codeSource = AgentInitialization.class.getProtectionDomain().getCodeSource();
if (codeSource == null) {
return null;
}
URI jarFileURI; // URI is needed to deal with spaces and non-ASCII characters
try {
jarFileURI = codeSource.getLocation().toURI();
}
catch (URISyntaxException e) {
throw new RuntimeException(e);
}
return new File(jarFileURI).getPath();
}
}