dev.jbang.net.jdkproviders.DefaultJdkProvider Maven / Gradle / Ivy
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package dev.jbang.net.jdkproviders;
import static dev.jbang.util.JavaUtil.resolveJavaVersionStringFromPath;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import dev.jbang.Settings;
import dev.jbang.net.JdkProvider;
/**
* This JDK provider returns the "default" JDK if it was set (using
* jbang jdk default
).
*/
public class DefaultJdkProvider implements JdkProvider {
@Nonnull
@Override
public List listInstalled() {
Path defaultDir = Settings.getCurrentJdkDir();
if (Files.isDirectory(defaultDir)) {
Optional version = resolveJavaVersionStringFromPath(defaultDir);
if (version.isPresent()) {
String id = "default";
return Collections.singletonList(createJdk(id, defaultDir, version.get()));
}
}
return Collections.emptyList();
}
@Nullable
@Override
public Jdk getJdkById(@Nonnull String id) {
if (id.equals(name())) {
List l = listInstalled();
if (!l.isEmpty()) {
return l.get(0);
}
}
return null;
}
@Nullable
@Override
public Jdk getJdkByPath(@Nonnull Path jdkPath) {
List installed = listInstalled();
Jdk def = !installed.isEmpty() ? installed.get(0) : null;
return def != null && def.getHome() != null && jdkPath.startsWith(def.getHome()) ? def : null;
}
}
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