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/*******************************************************************************
* Copyright (c) 2005, 2010 Intel Corporation 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:
* Intel Corporation - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.managedbuilder.gnu.cygwin;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import org.eclipse.cdt.core.settings.model.util.CDataUtil;
import org.eclipse.cdt.managedbuilder.core.IManagedIsToolChainSupported;
import org.eclipse.cdt.managedbuilder.core.IToolChain;
import org.osgi.framework.Version;
/**
* This class implements the IManagedIsToolChainSupported for the Gnu Cygwin tool-chain
* The class is NOT used currently, because currently the gnu cygwin tool-chain
* is intended to be used not only with Cygwin, but with MinGW also, and there is no
* correct way of determining whether the appropriate packages are installed for MinGW.
*
* For the future MBS/CDT versions we might create the separate tool-chain/configuration/project-type
* for the MinGW and define a set of converters using the tool-chain converter mechanism that MBS will provide,
* that would convert the CygWin to the MinGW projects/tool-chains, and vice a versa.
*
* @noextend This class is not intended to be subclassed by clients.
*/
public class IsGnuCygwinToolChainSupported implements IManagedIsToolChainSupported {
private static final String[] CHECKED_NAMES = {"gcc", "binutils", "make"}; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
private static String etcCygwinCached = null;
private static boolean toolchainIsSupported = false;
/**
* @since 8.0
*/
@Override
public boolean isSupported(IToolChain toolChain, Version version, String instance) {
String etcCygwin = CygwinPathResolver.getEtcPath();
if (CDataUtil.objectsEqual(etcCygwin, etcCygwinCached)) {
return toolchainIsSupported;
}
toolchainIsSupported = etcCygwin != null && arePackagesInstalled(etcCygwin);
etcCygwinCached = etcCygwin;
return toolchainIsSupported;
}
/**
* Returns true if all required packages are installed, see CHECKED_NAMES for a list of packages. Cygwin
* maintains a list of packages in /etc/setup/installed.db so we look for packages in this file.
*
* @param etcCygwin the absolute path of /etc containing /setup/installed.db
* @return true if the packages specified in CHECKED_NAMES are installed
*/
private boolean arePackagesInstalled(String etcCygwin) {
boolean arePackagesInstalled = false;
File file = new File(etcCygwin + "/setup/installed.db"); //$NON-NLS-1$
try {
BufferedReader data = new BufferedReader(new FileReader(file));
// All required package names should be found
boolean[] found = new boolean[CHECKED_NAMES.length];
String s;
while ((s = data.readLine()) != null ) {
for (int j = 0; j < CHECKED_NAMES.length; j++) {
if (s.startsWith(CHECKED_NAMES[j])) {
found[j] = true;
}
}
}
arePackagesInstalled = true;
for (int j = 0; j < CHECKED_NAMES.length; j++) {
arePackagesInstalled &= found[j];
}
data.close();
} catch (FileNotFoundException e) {
} catch (IOException e) {
}
return arePackagesInstalled;
}
}
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