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/*******************************************************************************
* Copyright (c) 2015, 2016 QNX Software Systems 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
*******************************************************************************/
package org.eclipse.cdt.build.gcc.core.internal;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.file.Path;
import java.util.HashSet;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.cdt.build.gcc.core.GCCToolChain;
import org.eclipse.cdt.core.build.IToolChainManager;
import org.eclipse.cdt.core.build.IToolChainProvider;
/**
* Finds gcc and clang on the path.
*/
public class GCCPathToolChainProvider implements IToolChainProvider {
private static final String ID = "org.eclipse.cdt.build.gcc.core.gccPathProvider"; //$NON-NLS-1$
private static final Pattern gccPattern = Pattern.compile("(.*-)?(gcc|g\\+\\+|clang|clang\\+\\+)"); //$NON-NLS-1$
private static final Pattern versionPattern = Pattern.compile(".*(gcc|LLVM) version .*"); //$NON-NLS-1$
private static final Pattern targetPattern = Pattern.compile("Target: (.*)"); //$NON-NLS-1$
@Override
public String getId() {
return ID;
}
@Override
public void init(IToolChainManager manager) {
Set<String> names = new HashSet<>();
String path = System.getenv("PATH"); //$NON-NLS-1$
for (String dirStr : path.split(File.pathSeparator)) {
File dir = new File(dirStr);
if (dir.isDirectory()) {
for (String file : dir.list()) {
Matcher matcher = gccPattern.matcher(file);
if (matcher.matches()) {
String prefix = matcher.group(1);
String command = dirStr + File.separatorChar + file;
try {
Process proc = new ProcessBuilder(new String[] { command, "-v" }).redirectErrorStream(true) //$NON-NLS-1$
.start();
String version = null;
String target = null;
try (BufferedReader reader = new BufferedReader(
new InputStreamReader(proc.getInputStream()))) {
for (String line = reader.readLine(); line != null; line = reader.readLine()) {
Matcher versionMatcher = versionPattern.matcher(line);
if (versionMatcher.matches()) {
version = line.trim();
continue;
}
Matcher targetMatcher = targetPattern.matcher(line);
if (targetMatcher.matches()) {
target = targetMatcher.group(1);
continue;
}
}
}
if (target != null && version != null) {
String name = target + " - " + version; //$NON-NLS-1$
if (!names.contains(name)) {
names.add(name);
manager.addToolChain(new GCCToolChain(this, target, version,
new Path[] { dir.toPath() }, prefix));
}
}
} catch (IOException e) {
Activator.log(e);
}
}
}
}
}
}
}
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