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/*******************************************************************************
* Copyright (c) 2000, 2013 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.internal.core;
import java.net.URL;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.variables.IDynamicVariable;
import org.eclipse.core.variables.IDynamicVariableResolver;
/**
* Resolves common system variables. The current set of variables
* supported (referenced as an argument to this variable) are:
* <ul>
* <li>ARCH - value of <code>BootLoader.getOSArch()</code></li>
* <li>ECLIPSE_HOME - location of the Eclipse installation</li>
* <li>NL - value of <code>BootLoader.getNL()</code></li>
* <li>OS - value of <code>BootLoader.getOS()</code></li>
* <li>WS - value of <code>BootLoader.getWS()</code></li>
* </ul>
* @since 3.0
*/
public class SystemVariableResolver implements IDynamicVariableResolver {
/* (non-Javadoc)
* @see org.eclipse.core.variables.IDynamicVariableResolver#resolveValue(org.eclipse.core.variables.IDynamicVariable, java.lang.String)
*/
@Override
public String resolveValue(IDynamicVariable variable, String argument) throws CoreException {
if ("ARCH".equals(argument)) { //$NON-NLS-1$
return Platform.getOSArch();
} else if ("ECLIPSE_HOME".equals(argument)) { //$NON-NLS-1$
URL installURL = Platform.getInstallLocation().getURL();
IPath ppath = new Path(installURL.getFile()).removeTrailingSeparator();
return getCorrectPath(ppath.toOSString());
} else if ("NL".equals(argument)) { //$NON-NLS-1$
return Platform.getNL();
} else if ("OS".equals(argument)) { //$NON-NLS-1$
return Platform.getOS();
} else if ("WS".equals(argument)) { //$NON-NLS-1$
return Platform.getWS();
}
return null;
}
private static String getCorrectPath(String path) {
StringBuilder buf = new StringBuilder();
for (int i = 0; i < path.length(); i++) {
char c = path.charAt(i);
if (Platform.getOS().equals("win32")) { //$NON-NLS-1$
if (i == 0 && c == '/') {
continue;
}
}
// Some VMs may return %20 instead of a space
if (c == '%' && i + 2 < path.length()) {
char c1 = path.charAt(i + 1);
char c2 = path.charAt(i + 2);
if (c1 == '2' && c2 == '0') {
i += 2;
buf.append(" "); //$NON-NLS-1$
continue;
}
}
buf.append(c);
}
return buf.toString();
}
}
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