org.dawb.tango.extensions.TangoUtils.java Source code

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Here is the source code for org.dawb.tango.extensions.TangoUtils.java

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/*
 * Copyright (c) 2012 European Synchrotron Radiation Facility,
 *                    Diamond Light Source Ltd.
 *
 * 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.dawb.tango.extensions;

import java.util.regex.Matcher;

import org.dawb.common.ui.Activator;
import org.dawb.common.ui.preferences.CommonUIPreferenceConstants;
import org.dawnsci.io.spec.SpecSyntax;
import org.eclipse.core.runtime.preferences.InstanceScope;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.ui.preferences.ScopedPreferenceStore;

import fr.esrf.TangoApi.ConnectionFailed;

public class TangoUtils {

    public static String getHardwareAddress(final String hardwareName) {

        IPreferenceStore store = Activator.getDefault().getPreferenceStore();

        final StringBuffer buf = new StringBuffer("//");
        buf.append(store.getString(CommonUIPreferenceConstants.SERVER_NAME));
        buf.append(":");
        buf.append(store.getInt(CommonUIPreferenceConstants.SERVER_PORT));
        buf.append("/");
        buf.append(store.getString(CommonUIPreferenceConstants.BEAMLINE_NAME));
        buf.append("/");
        buf.append(hardwareName);

        return buf.toString();
    }

    /**
     * Converts a command as typed on the command line or into a 
     * macro file into a true spec command.
     * 
     * @param typedCommand
     * @return
     */
    public static String getBracketedCommand(String typedCommand) {

        if (typedCommand == null)
            return null;
        typedCommand = typedCommand.trim();

        final StringBuilder buf = new StringBuilder();
        if (!typedCommand.startsWith("eval('")) {
            buf.append("eval('");
        }

        buf.append(typedCommand);
        if (!typedCommand.startsWith("eval('") && !typedCommand.endsWith("')")) {
            buf.append("')");
        }

        return buf.toString();
    }

    public static Matcher getBracketedMatcher(final String typedCommand) {

        final Matcher matcher = SpecSyntax.CMD.matcher(typedCommand);
        if (matcher.matches()) {
            return matcher;
        }
        return null;
    }

    public static String getSpecName() {

        IPreferenceStore commonStore = new ScopedPreferenceStore(new InstanceScope(), "org.dawb.common.ui");
        String specName;
        boolean isDummy = commonStore.getBoolean(CommonUIPreferenceConstants.MOCK_SESSION);
        if (isDummy) {
            specName = "SPEC_mock";
        } else {
            specName = commonStore.getString(CommonUIPreferenceConstants.SPEC_NAME);
            specName = specName.toUpperCase();
        }
        return specName;
    }

    public static String getSpecCommandAddress() {
        return TangoUtils.getHardwareAddress("spec/" + getSpecName().toLowerCase());
    }

    public static String getMessageFromException(final String cmd, final Exception ne) {
        if (ne instanceof ConnectionFailed) {
            ConnectionFailed cf = (ConnectionFailed) ne;
            if (cf.errors != null && cf.errors.length > 0) {
                return cf.errors[0].desc;
            } else {
                return "An error occurred sending command: \"" + cmd + "\". It has not been run.\n"
                        + cf.getMessage();
            }
        } else {
            return ne.getMessage();
        }
    }
}