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/*******************************************************************************
* Copyright (c) 2009, 2013 Mountainminds GmbH & Co. KG and Contributors
* 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:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.agent.rt.internal;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
import java.util.Properties;
/**
* Internal utility to load runtime configuration from a classpath resource and
* from system properties. System property keys are prefixed with
* <code>jacoco.</code>. If the same property is defined twice the system
* property takes precedence.
*/
final class ConfigLoader {
private static final String SYS_PREFIX = "jacoco-agent.";
static Properties load(final String resource, final Properties system) {
final Properties result = new Properties();
// 1. Try to load resource
final InputStream file = Offline.class.getResourceAsStream(resource);
if (file != null) {
try {
result.load(file);
} catch (final IOException e) {
throw new RuntimeException(e);
}
}
// 2. Override with system properties
for (final Map.Entry<Object, Object> entry : system.entrySet()) {
final String keystr = entry.getKey().toString();
if (keystr.startsWith(SYS_PREFIX)) {
result.put(keystr.substring(SYS_PREFIX.length()),
entry.getValue());
}
}
return result;
}
private ConfigLoader() {
}
}
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