package org.erlide.backend;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.RegistryFactory;
import org.erlide.backend.internal.BackendActivator;
import org.erlide.runtime.api.IOtpRpc;
import org.erlide.runtime.rpc.RpcException;
import org.erlide.util.ErlLogger;
import org.erlide.util.Util;
import com.ericsson.otp.erlang.OtpErlangLong;
import com.ericsson.otp.erlang.OtpErlangObject;
import com.ericsson.otp.erlang.OtpErlangRangeException;
import com.ericsson.otp.erlang.OtpErlangTuple;
public class BackendUtils {
public static String getErlideNodeNameTag() {
String fUniqueId;
final IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
final String location = root.getLocation().toPortableString();
final String user = System.getProperty("user.name");
final String timestamp = Long.toHexString(System.currentTimeMillis() & 0xFFFFFF);
fUniqueId = Long.toHexString(location.hashCode() & 0xFFFFF) + "_" + user + "_"
+ timestamp;
return fUniqueId.replaceAll("[^a-zA-Z0-9_-]", "");
}
public static String getBeamModuleName(final String path) {
return getBeamModuleName(new Path(path));
}
public static String getBeamModuleName(final IPath path) {
if (path.getFileExtension() != null && "beam".equals(path.getFileExtension())) {
return path.removeFileExtension().lastSegment();
}
return null;
}
public static OtpErlangObject ok(final OtpErlangObject v0) {
if (!(v0 instanceof OtpErlangTuple)) {
return v0;
}
final OtpErlangTuple v = (OtpErlangTuple) v0;
if (Util.isOk(v)) {
return v.elementAt(1);
}
return v;
}
public static IConfigurationElement[] getSourcepathConfigurationElements() {
final IExtensionRegistry reg = RegistryFactory.getRegistry();
return reg.getConfigurationElementsFor(BackendActivator.PLUGIN_ID,
"sourcePathProvider");
}
public static IConfigurationElement[] getCodepathConfigurationElements() {
final IExtensionRegistry reg = RegistryFactory.getRegistry();
return reg.getConfigurationElementsFor(BackendActivator.PLUGIN_ID, "codepath");
}
public static IExtensionPoint getCodepathExtension() {
final IExtensionRegistry reg = Platform.getExtensionRegistry();
return reg.getExtensionPoint(BackendActivator.PLUGIN_ID, "codepath");
}
public static boolean isAccessibleDir(final IOtpRpc otpRpc, final String localDir) {
try {
final OtpErlangObject r = otpRpc
.call("file", "read_file_info", "s", localDir);
if (Util.isOk(r)) {
final OtpErlangTuple result = (OtpErlangTuple) r;
final OtpErlangTuple info = (OtpErlangTuple) result.elementAt(1);
final String access = info.elementAt(3).toString();
final int mode = ((OtpErlangLong) info.elementAt(7)).intValue();
return ("read".equals(access) || "read_write".equals(access))
&& (mode & 4) == 4;
}
} catch (final OtpErlangRangeException e) {
ErlLogger.error(e);
} catch (final RpcException e) {
ErlLogger.error(e);
}
return false;
}
}